CN113042245A

CN113042245A - Spray gun

Info

Publication number: CN113042245A
Application number: CN202110256603.8A
Authority: CN
Inventors: 王金峰
Original assignee: Ningbo Sengcze Macrospray Co Ltd
Current assignee: Ningbo Sengcze Macrospray Co Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-29
Anticipated expiration: 2041-03-09
Also published as: CN113042245B

Abstract

The invention discloses a spray gun, comprising: the gun body assembly is a movable main body for realizing liquid feeding and spraying; the gun body assembly is connected with the pump body assembly in a sliding manner; the piston assembly is arranged in the pump body assembly and is in sealed insertion and clamping connection with the gun body assembly, and the movement and the resetting of the piston assembly are realized by the driving of the gun body assembly; the trigger assembly is used for realizing an operation body for pressurizing the upper liquid spraying liquid; the trigger assembly is respectively connected with the gun body assembly and the pump body assembly in a rotating manner; the movement and the reset of the gun body assembly are realized by the driving of the trigger assembly. This spray gun does not set up traditional spring part, adopts plastic structural design, but whole recycle, and spare part is few, and compact structure is succinct, and the hydrojet effect is more exquisite, and safe locking structural design transports and uses safe and reliable, and the design of pressure release structure can cut off liquid in the twinkling of an eye, avoids dropping liquid problem etc..

Description

Spray gun

Technical Field

The invention relates to the technical field of spray guns, in particular to a full-plastic spring-free spray gun capable of being integrally recycled.

Background

Liquid spray guns are more and more widely applied to various fields, along with the continuous enhancement of environmental awareness of people, the environmental protection type spray gun becomes a new trend, various environmental protection type spray guns continuously appear, but most spray guns can only be manufactured by environmental protection type materials on most parts of the spray gun, because the spray gun needs internal pressurization, liquid feeding, liquid spraying and other operation processes in the use process, the piston type spray gun can not be separated from a spring part, the traditional design of adopting built-in and external springs needs to meet certain elastic requirements, no matter the built-in spring or the external spring, most parts adopt metal springs, the use of the metal springs can not realize the integral recycling of the spray gun, the parts can be recycled after the parts are disassembled, and the environmental protection type design of the spray gun is limited.

For example, Chinese patent literature (publication date: 2011, 5, 25 and publication number: CN 201842380U) discloses a miniature hand-button sprayer, which relates to a sprayer. The sprayer comprises a spray sheet, a head cap, a connecting rod, a wrench, a connecting seat, a valve rod, a piston, a valve needle, a pump body, an inner plug, a marble, a short spring, a long spring, a large ring, a suction pipe, a plug, a gasket and a switch, wherein the spray head is embedded with the front end of the head cap, the rear end of the head cap is sleeved with the connecting rod, one side of the lower part of the connecting rod is provided with the switch, the switch is connected with the plug, the lower end of the connecting rod is sleeved with the upper end of the valve rod, the upper end of the valve needle is sleeved with the lower end of the valve rod, the middle part of the outer wall of the valve rod is tightly sleeved with the inner plug, the inner plug is provided with the short spring, the outer wall of the inner plug is sleeved with the upper end of the pump body. The spanner has better pressing effect, more convenient pulling of the switch and long service life. This technical scheme has adopted big small spring structure to realize the spraying function.

Of course, the spring is designed by adopting an all-plastic spring structure, but the all-plastic spring has higher requirements on design requirements, performance and the like. For example, Chinese patent literature (publication date: 11/5/2019, publication number: CN 110406790A) discloses an environment-friendly spray pump, which realizes liquid feeding and liquid spraying by deformation of an air bag, but such a structure causes unsmooth liquid feeding and liquid spraying due to different operation forces of operators, and when the air bag is used for a long time, once the elasticity of the air bag is fatigued, the whole liquid feeding and liquid spraying operation function is lost, so that the spray pump cannot be normally used, and meanwhile, the air bag operation is adopted, the requirement on air pressure is high, and when the suction force meets the requirement of not sucking an open valve sheet, the normal operation cannot be realized, or the liquid sucking effect is not ideal, and the like.

For another example, chinese patent document (publication No. CN1076308C, 12/19/2001) discloses a suction device which is attached to a container filled with a liquid and ejects a liquid gun body from the container, comprising: a cylinder with a liquid introduction port; a piston movable in the cylinder; a liquid discharge guide passage connected to a space of the cylinder, for discharging the liquid stored in the cylinder through the discharge guide passage when the piston is moved from the initial position to the other position by a pushing force; and a restoring means for restoring the piston from the moved position to the original position by gas pressure when the pushing force is released and storing the liquid in the cylinder. According to this suction device, when it is disposed of or recovered, it is not necessary to select depending on the material, so that the above-mentioned treatment can be performed at a low cost. The technical scheme realizes resetting by air pressure generated by thrust. The requirement on air pressure is high, and the resetting effect is not ideal.

And this application aims at designing a section and need not traditional spring and can realize functions such as pressure boost, liquid, hydrojet, can effectively avoid adopting gasbag or atmospheric pressure to operate the unsatisfactory scheduling problem of effect that exists simultaneously, and the speed of breaking off is quick, the plastic environment-friendly spray gun of no drip problem, and the design of environmental protection material is all adopted to the whole parts of this spray gun, but whole recovery, spare part is few, simple structure, and it is fast to go up the liquid, and sealing performance is good.

Disclosure of Invention

The invention aims to solve the problems that the existing spray gun adopts the traditional spring design structure to realize the functions of pressurization, liquid feeding, liquid spraying and the like, so that the whole spray gun cannot realize the all-plastic environment-friendly design and cannot realize the whole recycling, the air bag is adopted to realize the problems of high requirement on the pressure of spraying, poor effect and the like, and the spray gun provided by the invention adopts the design without the traditional spring part to realize the functions of pressurization, liquid feeding, liquid spraying and the like.

The invention adopts the technical scheme that the invention achieves the aim that: a spray gun, comprising:

the gun body assembly is a movable main body for realizing liquid feeding and spraying;

the gun body assembly is connected with the pump body assembly in a sliding manner;

the piston assembly is arranged in the pump body assembly and is in sealed insertion and clamping connection with the gun body assembly, and the movement and the resetting of the piston assembly are realized by the driving of the gun body assembly;

the trigger assembly is used for realizing an operation body for pressurizing the upper liquid spraying liquid; the trigger assembly is respectively connected with the gun body assembly and the pump body assembly in a rotating manner; the movement and the reset of the gun body assembly are realized by the driving of the trigger assembly.

The spray gun is designed innovatively, particularly aiming at the defects of the prior art that the traditional spring is adopted for resetting and the resetting is realized through air pressure, on the premise of not changing the overall structure of the spray gun, according to the working principle of the spray gun, under the condition of meeting the requirements of functions of pressurizing, feeding liquid, spraying liquid and the like of the spray gun, the spray gun firstly adopts the concept of not arranging the traditional spring aiming at the existing built-in spring structure and external spring structure, omits the traditional reset spring, adopts the gun body component to drive the piston component to enter compressed gas for moving and resetting, and realizes the moving and resetting of the gun body component through the trigger component, as the trigger component is respectively connected with the gun body component and the pump body component in a rotating way, the trigger component is pulled in the using process, and can rotate around two rotating points, because the rifle body subassembly is for pump body subassembly sliding connection in two pivot points, consequently, the trigger subassembly is at the rotation in-process because pump body subassembly is not relatively not right so the trigger subassembly only carries out rotary motion for pump body subassembly, and the trigger subassembly is when rotating with the pivot point of pump body subassembly, after the trigger subassembly rotates a certain position, continue pulling the trigger subassembly, then the trigger subassembly can drive rifle body subassembly downstream, thereby the rifle body subassembly slides down along pump body subassembly and drives piston assembly downstream above that promptly, compress the inside gas of piston assembly, thereby the operation of liquid spraying liquid is gone up in the realization. When loosening trigger subassembly after, trigger subassembly can automatic re-setting, trigger subassembly automatic re-setting drives the rifle body subassembly and upwards resets, simultaneously, rifle body subassembly drives piston assembly and resets, consequently, need not set up built-in spring or external spring at piston inside or outside in whole reset process, thereby make whole spray gun can realize the whole functions of spray gun like under the prerequisite that does not set up traditional spring, and so the spray gun is whole can all through the environmental protection material preparation owing to not set up traditional spring, and then realize whole the recovery. This spray gun is owing to adopt the trigger subassembly to drive the rifle body subassembly and then drive piston assembly and reset, has avoided through gasbag, atmospheric pressure reset existence to reset the pressure requirement height, the emergence of phenomenon such as the effect of resetting is poor. The spray gun has the advantages of few parts, compact and simplified overall structure, easy-to-assemble and disassemble connection mode of all parts and convenient assembly.

Preferably, the gun body assembly comprises a gun body, a nozzle assembly embedded in the gun body and a soft bullet. The preferred rifle body of rifle body subassembly, the setting is used for realizing the nozzle assembly of spraying inside the rifle body, and be used for realizing the flexible glue bullet piece of rifle body internal passage break-make, the rifle body, nozzle assembly and flexible glue bullet piece are independent subassembly, can carry out the design of isostructure as required, with the needs that satisfy different liquid and user, especially nozzle assembly, can make into different structures in order to realize different spraying shape and spraying effect, and as a key part flexible glue bullet piece of this spray gun, the design of its structure and elasticity size then has decided the speed of starting to spout and has played the effect of spouting, and cutout and sealed effect.

Preferably, the gun body comprises an upper liquid gun body and a liquid spraying gun body, and the axis of the upper liquid gun body and the axis of the liquid spraying gun body form an included angle. The gun body can be an integral structure or a split structure, the basic structure is generally divided into a liquid spraying gun body and a liquid spraying gun body, a certain included angle is formed between the liquid spraying gun body and the liquid separating gun body, the size of the included angle can be randomly selected within a range of 180 degrees according to design requirements, for example, 90 degrees can be selected as the optimal preferred scheme, and the included angle can be set to be 120 degrees according to the use habits of users.

Preferably, an upper liquid cavity is arranged in the upper liquid spray gun body, a liquid outlet cavity is arranged in the liquid spray gun body, an on-off cavity is arranged at the joint of the upper liquid cavity and the liquid outlet cavity, a sealing ring platform is coaxially arranged in the on-off cavity and the upper liquid cavity, a pressurizing cavity communicated with the upper liquid cavity and the on-off cavity is arranged in the sealing ring platform, and the soft rubber elastic piece is pressed in the on-off cavity and matched with the sealing ring platform to realize the on-off of the upper liquid cavity and the liquid outlet cavity; and a sealing clamping groove used for being clamped with the piston is arranged on the cavity wall of the upper liquid cavity. Go up liquid gun internal portion and be provided with the sap cavity, the internal portion of hydrojet gun is provided with out the sap cavity for realize the setting of the internal liquid channel of rifle, set up the break-make chamber in last sap cavity and play sap cavity transitional coupling department, be used for setting up flexible glue bullet spare, thereby control liquid channel's break-make. In order to realize effective opening and closing of flexible glue bullet piece, be provided with the seal ring platform at break-make intracavity portion, the inside pressure boost chamber that the bore is less than last sap cavity that is provided with of seal ring platform, when pulling trigger subassembly, trigger subassembly drives piston assembly compression pump body subassembly when gaseous, thereby inside atmospheric pressure is through pressure boost chamber with flexible glue bullet piece jack-up upwards open the passageway, when inside atmospheric pressure is less than the elasticity of flexible glue bullet piece, flexible glue bullet piece resets rapidly, block the liquid break-make, thereby can realize cutting off liquid in the twinkling of an eye, stop the dropping liquid problem. Go up the liquid intracavity portion and be provided with sealed draw-in groove for the joint of convenient piston assembly to make things convenient for rifle body to drive piston assembly and slide from top to bottom along pump body is inside, realize gas compression, go up liquid, hydrojet process.

Preferably, the outer wall of the upper part of the upper liquid gun body is provided with a rotary pressing piece, and the outer wall of the lower part of the upper liquid gun body is provided with a sliding rail along the axial direction. Preferably, the upper liquid gun body comprises a pressing body and a sliding body which are arranged along the same axis, the rotary pressing piece is arranged on the outer wall of the pressing body, and the sliding rail is arranged on the outer wall of the sliding body along the axial direction. Go up liquid rifle body an organic whole and be provided with and press body and slider, it is in order to cooperate with the stroke groove on the trigger to press down to rotate the slider through the stroke groove thereby realize going up the downstream of liquid rifle body to set up the slide rail on the outer wall of slider, in order to cooperate with the rifle body spout on the combination, carry out spacing formula slip to the slider, thereby when guaranteeing that the rifle body slides from top to bottom, slide along the rifle body spout along the axial all the time, and can not produce relative rotation, the effect is pressed in step of trigger with the rifle body has been guaranteed.

Preferably, the nozzle assembly comprises a nozzle and a liquid guiding body, and the liquid guiding body is provided with a flow guiding body and a flow dividing groove; the nozzle is of a multi-groove structure, and a liquid outlet gap is formed between the nozzle and the liquid guide body in an annular mode. Preferably, the liquid guiding body comprises a flow guiding body, a flow dividing body and a connecting body which are integrally arranged along the same axis, the flow guiding body is arranged in a cone structure, the large end of the flow guiding body is connected with the flow dividing body, a plurality of flow dividing grooves are axially arranged on the flow dividing body, and the diameter of the connecting body is smaller than that of the flow dividing body; the nozzle is sleeved with the connecting body, and a liquid outlet gap is formed between the nozzle and the connecting body in an annular mode. The nozzle assembly is designed for realizing various spray shapes and spray effects, different spray shapes and spray effects can be generated by adopting different nozzle assemblies, as an optimal scheme, the nozzle assembly comprises a nozzle and a liquid guide body, the nozzle adopts a multi-groove structure which can be a multi-groove structure comprising two grooves, three grooves, four grooves, five grooves, six grooves and the like, the design of the grooves preferably takes an inclined groove as a main part, namely the main center of the axis of the nozzle, each groove is designed in a rotary mode along the axis to the periphery, the groove presents an increased structural design from the center to an outer groove opening, and the optimal scheme enables the spray effects to be more exquisite. The purpose of arranging the liquid guide body is to spray the liquid entering the liquid outlet cavity from the upper liquid cavity into the nozzle from different positions through the liquid guide body and the flow dividing body, so that the liquid sprayed out of the nozzle can be finer and smoother. The flow guiding body makes the liquid realize a process of circumferentially dispersing and flowing out from a bundle of flow guiding body in the liquid outlet cavity, and the liquid which is dispersed and flowed out is in a plurality of flow direction nozzles through the flow dividing grooves on the flow dividing body, so as to spray fine and smooth spray from the grooves of the nozzles.

Preferably, the soft rubber elastic piece is provided with a sealing groove, and radial liquid outlet grooves are uniformly distributed on the outer side of the sealing groove; the flexible glue bullet piece inside be provided with the deformation chamber, deformation chamber and seal groove between be provided with the isolation deformation piece. Preferably, the flexible glue bullet spare includes flexible glue deformation body and supporter the inside of flexible glue deformation body set up the deformation chamber, deformation chamber and seal groove between set up the isolation deformation piece, the supporter equipartition set up at the bottom of flexible glue deformation body and supporter interval each other and form the play liquid tank. The purpose of flexible glue bullet piece makes it upwards open through internal pressure, thereby make liquid channel open, and when internal pressure diminishes, then can realize cutoff in the twinkling of an eye by self-sealing liquid channel, avoid the dropping liquid problem, based on this, be provided with the seal groove that is used for opening and breaks off liquid channel on this flexible glue bullet piece, and the seal groove outside is equipped with a plurality of radial liquid grooves, when the flexible glue bullet piece is in encapsulated situation, disconnection does not communicate between seal groove and the radial liquid groove, when the flexible glue bullet piece is in the open mode, then liquid flows out the liquid cavity through radial liquid groove flow direction behind the seal groove, realize liquid channel's intercommunication. As a preferred scheme, the flexible glue elastic piece is provided with a flexible glue deformable body and a plurality of supporting bodies, the flexible glue deformable body is used as a main body for realizing deformation and opening a liquid channel through air pressure, the optimal deformation structure is internally provided with a deformation cavity, the deformation cavity and the sealing groove are oppositely arranged along two axial directions of the flexible glue elastic piece, the deformation cavity is in isolation and sealing connection with the sealing groove through an isolation deformation sheet, the isolation deformation sheet can be an isolation deformation sheet integrally formed with the flexible glue elastic piece, and an arc-shaped structure protruding towards the inside of the deformation cavity is an optimal design structure, the structure can enable the cross section of the sealing groove to be in a trapezoidal structure, the whole flexible glue elastic piece is conveniently upwards bounced through the internal air pressure, of course, the shape of the isolation deformation sheet can also be any other structural shape, as long as the elastic deformation of the flexible glue elastic piece can be realized, the opening and closing functions can be realized, for example, the structure can be a cone structure, and a square, round, arch and the like structure. The specific parameters of the soft rubber elastic piece, such as the elastic force, the deformation and the like, are designed and manufactured according to the design requirements of the whole spray gun, the internal design pressure of the spray gun, the properties of the used liquid and the like. Different spray gun sizes, different liquids, concrete parameters are different, but as long as elastic deformation can be carried out, thereby realizing the on-off of a liquid channel.

Preferably, the pump body assembly is a springless assembly, and comprises a combination body and a pump body, wherein the pump body and the combination body are connected in a multi-seal structure. The pump body assembly changes the traditional design requirement of assembling by a plurality of parts, does not design traditional metal spring inside or outside the pump body, only designs a combination and a pump body, simultaneously, is connected through many seal structure between the combination and the pump body, and is sealed effectual, the simplification design of pump body assembly for whole spray gun is more succinct, has reduced the sealed poor problem of effect that the multipart connection exists, and the part is few moreover, has reduced the cost of manufacture, and the equipment is more convenient.

Preferably, the pump body is internally provided with a piston cavity and a valve seat, the valve seat is internally provided with a valve body stroke cavity, the valve seat on the upper part of the valve body stroke cavity is provided with a back pressure type elastic limiting structure, and the valve body is arranged in the valve body stroke cavity. Preferably, the pump body is internally provided with a piston cavity, the bottom of the pump body is provided with an inserting tube cavity, the valve seat is arranged at the joint of the inserting tube cavity and the piston cavity and is coaxially arranged, the valve seat is internally provided with a valve body stroke cavity, the valve seat on the upper part of the valve body stroke cavity is provided with a back pressure type elastic limiting structure, and the valve body stroke cavity is internally provided with a valve body. The inside piston chamber that is provided with of pump body realizes increasing, liquid and hydrojet operation through the cooperation realization of piston chamber and piston to the gaseous compression in the pump body, and pump body bottom sets up the intubate chamber and is connected for the joint card of straw in order to make things convenient for the liquid of liquid container inside to enter into the piston chamber through the straw in the realization. And set up the valve seat in the pump body, then for the installation of convenient valve body, the valve body can be non-metal ball valve, for example adopt PP plastic bead, also can be non-metal valve member, for example, PP plastic valve member, set up back pressure formula elasticity limit structure on the valve seat in order to realize the spacing to the motion stroke of valve body to guarantee that the valve body is through effectively opening and closing rapidly. Set up valve body stroke chamber in that the disk seat is inside, can effectively open and the stroke of opening can guarantee the last liquid volume of design can effectively go up the liquid operation in order to guarantee the valve member, can return fast and cut off the passageway after the liquid operation is accomplished.

Preferably, the side wall of the middle part of the pump body is provided with an air return and pressure relief hole communicated with the inside of the pump body; the side wall of the lower part of the pump body is provided with a plurality of pressure relief grooves communicated with the inside of the pump body. Set up return air pressure release hole and a plurality of pressure release groove on the pump body, the design in return air pressure release hole has realized that a hole is multi-functional, this return air pressure release hole can be in order to realize the return air of spray gun operation, again can be when piston downstream compressed gas, when the piston compression is to pressure release groove department, realize quick pressure release's effect together with pressure release groove, thereby the pressure release is fast to go up liquid velocity, and simultaneously, can make the inside flexible glue bullet spare of spray gun subassembly self-sealing when going up liquid, prevent the air reflux, seal in the twinkling of an eye, cut off liquid in the twinkling of an eye, avoid the emergence of dropping liquid phenomenon.

Preferably, a sliding cavity is axially arranged on the combined body, a gun body sliding groove is arranged on the cavity wall of the sliding cavity in parallel to the axis of the sliding cavity, and a clamping groove penetrating through the sliding cavity is radially arranged on the combined body; the on-off piece movably penetrates through the inside of the clamping groove and stretches out and draws back along the radial direction. The combination body is provided with the sliding cavity along the axial direction, so that the upper liquid gun body can slide up and down along the sliding cavity by matching with the upper liquid gun body on the gun body, meanwhile, a sliding gap is formed between the outer wall of the upper liquid gun body and the wall of the sliding cavity, and the sliding gap simultaneously forms a gas channel for external gas to enter the piston cavity. The wall of the sliding cavity is provided with a gun body sliding groove, so that the gun body sliding groove is matched with a sliding rail on the sliding body to realize axial sliding and limit circumferential rotation of the sliding body. The clamping groove is formed in the combined body, so that the on-off piece is arranged in the clamping groove in a penetrating mode, the on-off piece is pressed to lock and unlock the gun body in an axial sliding motion, when the gun body needs to be unlocked, the on-off piece is pressed inwards, a trigger can be pulled, and the spray gun can be normally used; when needing the locking, reverse pressing is led to the disconnected piece, makes to lead to the disconnected piece and withdraws from to the draw-in groove outside, and the rifle integument locking limits the trigger and presses, can prevent effectively that the transportation from revealing the emergence that causes the pollution phenomenon, also can avoid the injury that children's maloperation caused.

Preferably, the combination body is integrally provided with a hinge body in an outward extending manner, and the hinge body and the axis of the combination body are arranged in an included angle; one side of the hinge body facing the axis of the combination body is provided with an installation limiting groove; the free extending end part of the hinged body is provided with a trigger connection structure. The combination body is arranged to realize the connection between the gun body and the pump body, further realize the gun body to drive the piston to move in the piston cavity of the pump body, compress the gas to realize the liquid feeding and spraying operation, the gun body can be connected with the pump body through the combination body, the arrangement of parts can be effectively reduced, a hinge body is integrally and outwardly extended on the combination body and is used for realizing the hinge joint with the trigger and providing a rotating fulcrum for the rotation of the trigger, meanwhile, the arrangement of the limit groove for installing the elastic piece is convenient, so that the elastic reset piece can be effectively arranged between the combined body and the trigger, the elastic reset piece is compressed by the rotation of the trigger to deform so as to generate effective restoring force, thereby driving the trigger, the gun body and the piston to reset, realizing the pressurization of the internal air pressure by reciprocating operation of the trigger, when the pressure reaches a set value, the liquid in the liquid container jacks up the soft rubber elastomer to realize liquid spraying. The hinged body and the axis of the combined body form a certain included angle, so that the trigger can have an effective rotation stroke, and the stroke requirement of the gun body driving the piston to compress gas in the piston cavity is met. The size of the included angle between the hinge body and the axis of the combined body is set according to the rotation stroke, generally 15-75 degrees is the preferred angle, and other angles are determined according to specific design requirements.

Preferably, the piston assembly is a springless assembly, and a through medium cavity is arranged in the piston assembly; the piston body is a double-sealing body structure. Preferably, the piston assembly does not design the traditional built-in or external metal spring, and comprises a connecting body and a piston body which are integrally arranged; a through medium cavity is arranged inside the connecting body and the piston body, and a sealing clamping body used for clamping with the gun body is arranged on the outer wall of the upper part of the connecting body; the piston body is a double-sealing body structure. The piston assembly is of an integrated structure and comprises a longer cylindrical connecting body and a piston body with a double-sealing structure, wherein a through medium cavity is arranged inside the connecting body and the piston body, and the medium cavity is arranged to facilitate the circulation of compressed gas and liquid. And the connector need be connected with the sealed plug-in card of the last liquid cavity of the internal portion of rifle, consequently, set up sealed joint body on the outer wall of connector, for example can be the joint arch, also probably joint sand grip etc.. The double-sealing structure on the piston body can ensure that the piston opens the air return pressure relief hole when compressing air downwards in the movement process in the use process, and seals the whole piston cavity when resetting upwards, thereby blocking the gas passage of the outside gas and the inside communication of the liquid container.

Preferably, the trigger assembly comprises a trigger and an elastic resetting piece, and the elastic resetting piece is abutted between the trigger and the pump body assembly and realizes elastic deformation and resetting by operating the trigger. The trigger component comprises a trigger and an elastic reset piece, the reset of the trigger is realized through the elastic reset piece, thereby driving the gun body and the piston to reset through the trigger, thereby changing the structural design that the traditional spray gun uses a spring to reset, avoiding the problem that the spray gun can not realize integral recovery due to the adoption of a metal spring, the elastic reset piece can be made of non-metal materials, such as plastics, elastic rubber and the like, the material can meet the design requirement of the elastic force of the elastic reset piece, the non-metal material is adopted as the elastic reset piece to replace the traditional metal spring, the promotion application space that can be very big realizes that the environmental protection is withdrawed and is utilized, reduces the waste of raw and other materials and the pollution to the environment, and more importantly elasticity resets and can carry out the adaptability design of elasticity and structural shape according to the pump body size, can satisfy the spray gun design needs of different grade type.

Preferably, the trigger is integrally arranged in an arc-shaped shell structure, a combined body hinge structure is arranged on the trigger, a stroke opening is formed in the trigger shell along the rotation direction of the trigger, and a stroke groove and a reset piece deformation cavity are formed in the shell. Preferably, the trigger is integrally provided with a pulling part, a rotating part and a hinged part in an arc-shaped shell structure, the hinged part is provided with a combined body hinged structure, a shell where the rotating part is located is provided with a stroke opening along the rotating direction of the trigger, the inner wall of the shell where the rotating part is located is provided with a limiting block, the limiting block is provided with a stroke groove, and a reset part deformation cavity is arranged in the shell of the rotating part, which faces one side of the hinged part, of the limiting block. The trigger is wholly arc shell structure setting, can compromise the whole pleasing to the eye design requirement of appearance of leaf rifle, can also reduce the application of spare part simultaneously with each function integration on the trigger, trigger an organic whole is provided with pulls the portion and is used for the user to pull the operation of trigger, and the design of rotating part is for realizing that the trigger revolves the rotation point for the pivot point with the hinge structure on the hinge body, make stroke mouth on it have a relative rotation stroke for wearing to establish the intraoral hydrojet rifle body of stroke, after the rotation stroke, also be exactly when the stroke groove pivoted extreme position on the stopper, the stroke groove is pressed the motion by the relative motion conversion with the rotation pressing piece on the last liquid pump body, the stroke groove is pressed and is rotated the pressing piece and is driven rifle body downstream, thereby realize the compressed gas operation of piston, and then realize the operation of liquid and hydrojet. The arrangement of the resetting piece deformation cavity is that the resetting piece is arranged conveniently, the resetting piece deformation cavity and the installation limiting groove on the combined body jointly realize the installation limiting of the resetting piece, so that the deformation of the resetting piece deformation cavity and the installation limiting groove is realized, the elastic resetting force is generated, and the gun body and the piston are driven to reset.

Preferably, the elastic resetting piece is a strip-shaped elastic piece or an arc-shaped elastic piece. The structure of the elastic reset piece is comprehensively set according to the restoring force of the trigger, the gun body and the piston which are driven by the elastic reset piece, the elastic piece with the arc-shaped structure is taken as the optimal scheme, and other structures can be various different structural forms such as an elastic strip, an elastic assembly and the like.

Preferably, the device also comprises an on-off part, and the gun body assembly (1) and the pump body assembly (2) realize sliding and limiting through the on-off part (5); the on-off part is provided with a gun body sliding hole, the hole wall of the gun body sliding hole is provided with a gun body sliding groove, and a limiting table is arranged inside the gun body sliding hole. The gun body assembly and the pump body assembly are slid or limited through the on-off piece, the gun body assembly and the pump body assembly can be locked when not in use, the liquid spraying phenomenon cannot be realized due to transportation or accidental operation, when in use, the on-off piece is only required to be opened, then the gun body assembly and the pump body assembly can slide relatively, and therefore the pressurization, liquid feeding and liquid spraying operations can be realized. The effect of the on-off piece is in order to realize the gliding locking of rifle body and open, plays the function of switch, consequently sets up rifle body sliding hole on the on-off piece, and the normal operating of spray gun is realized to the up-and-down sliding motion as the rifle body of needs, and sets up spacing platform and is when the on-off piece withdraws from to the draw-in groove outside, and spacing platform is located the below of slider to the restriction rifle body upward movement realizes the locking to the rifle body, and the setting of rifle body spout is for sliding with the slide rail cooperation on the slider.

The invention has the beneficial effects that: 1. according to the spray gun, a traditional steel wire spring is omitted, a traditional built-in spring or an external spring is not arranged, and the elastic reset piece made of non-metal materials is used for realizing integral reset in the operation process of the spray gun, so that the spray gun can be directly and integrally recycled, the waste of raw materials is reduced, and the pollution to the environment is reduced.

2. Set up return air pressure release hole on the pump body, a hole is multi-functional, can return air, can cooperate the pressure release groove to release pressure together again when the piston moves down to the pressure release groove, when the piston moves to the pressure release groove, in the twinkling of an eye the pressure release to realize going up liquid fast.

3. Adopt flexible glue bullet piece design, liquid produces pressure when playing to spout, and the flexible glue bullet piece can the atress open out the sap cavity, and self-sealing prevents the air reflux when going up liquid, cooperates the pressure release groove of pump body bottom simultaneously, can realize, and is sealed in the twinkling of an eye, cuts off liquid in the twinkling of an eye, avoids the emergence of dropping liquid phenomenon.

4. The connected mode of trigger and the rifle body adopts the cooperation mode of oval type stroke groove and cylindrical rotation pressing piece, convenient assembling, and the rifle body activity from top to bottom is driven by the trigger moreover, and when the trigger was pulled, the rifle body was through rotating the free redirecting of pressing piece, made the rifle body up-and-down motion.

5. Lead to disconnected piece and combination and adopt draw-in groove cooperation project organization, press down to lead to disconnected piece during the use inwards, can pull the trigger, realize normal use, the time spent will lead to disconnected piece and withdraw from to the draw-in groove outward, the slip of spacing rifle body, the trigger is pressed down, prevents to reveal in the transportation and causes the pollution, avoids children's maloperation to pull the injury that causes.

6. The spray gun can be applied to various liquid spraying devices of different types for spraying liquid pulled by a trigger.

Drawings

FIG. 1 is a schematic view of a spray gun according to the present invention;

FIG. 2 is a schematic view of the gun body, trigger and combination of the present invention in a configuration;

FIG. 3 is a schematic view of a trigger according to the present invention;

FIG. 4 is a schematic view of a gun body according to the present invention;

fig. 5 is a cross-sectional view of the body of the gun body of the present invention;

FIG. 6 is a schematic view of a nozzle according to the present invention;

FIG. 7 is a schematic view of a fluid conducting structure according to the present invention;

fig. 8 is a schematic structural view of the soft rubber elastic member of the present invention;

fig. 9 is a cross-sectional view of the soft plastic projectile of the present invention;

FIG. 10 is a schematic view of a construction of the combination according to the present invention;

FIG. 11 is a schematic view of a pump body according to the present invention;

FIG. 12 is a schematic view of one construction of the piston assembly of the present invention;

FIG. 13 is a schematic view of one construction of the on-off member of the present invention;

FIGS. 14a, 14b and 14c are schematic views of the liquid outlet on the lance according to the present invention;

FIG. 15 is a schematic view of the gas flow during use of the spray gun of the present invention;

in the figure: 1. a gun body assembly, 10, a gun body, 11, a nozzle assembly, 110, a nozzle, 111, a liquid guiding body, 112, a flow guiding body, 113, a flow dividing body, 114, a connecting body, 115, a flow dividing groove, 116, a groove, 12, a soft rubber elastic piece, 120, a sealing groove, 121, a radial liquid outlet groove, 122, a soft rubber deformation body, 123, a supporting body, 124, a deformation cavity, 125, an isolation deformation sheet, 13, an upper liquid gun body, 131, a pressing body, 132, a sliding body, 133, a rotary pressing piece, 134, a sliding rail, 14, a liquid spraying gun body, 15, an upper liquid cavity, 16, a liquid outlet cavity, 17, an on-off cavity, 18, a sealing ring platform, 19, a pressurization cavity, 2, a pump body assembly, 20, a combination body, 201, a sliding cavity, 202, a gun body sliding groove, 203, a clamping groove, 21, a pump body, 22, a piston cavity, 23, an intubation cavity, 24, a valve seat, 25, a valve body stroke cavity, 26, a rear pressure-pressing type elastic limit, 28. the device comprises a pressure relief groove, 29, an articulated body, 290, an installation limiting groove, 291, a trigger connection structure, 3, a piston assembly, 31, a connecting body, 32, a piston body, 33, a medium cavity, 34, a sealing clamping body, 4, a trigger assembly, 40, a trigger, 41, an elastic reset piece, 42, a pulling part, 43, a rotating part, 44, a hinged part, 45, a combined body articulated structure, 46, a stroke opening, 47, a limiting block, 48, a stroke groove, 49, a reset piece deformation cavity, 5, an on-off piece, 50, a gun body sliding hole, 51, a gun body sliding groove, 52, a limiting table, 6, a sealing clamping groove, 7, a valve body, L, a liquid outlet gap, 8, a threaded ring, 9, a pipette, H and a sliding gap.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments with reference to the accompanying drawings.

Example 1:

in the embodiment shown in fig. 1, 2, a spray gun comprises:

the gun body assembly 1 is a movable main body for realizing liquid feeding and spraying;

the gun body assembly 1 is connected with the pump body assembly 2 in a sliding manner, and the gun body assembly 1 and the pump body assembly 2 realize sliding or limiting through an on-off piece 5;

the piston assembly 3 is arranged in the pump body assembly 2 and is in sealed insertion and clamping connection with the gun body assembly 1, and the movement and the resetting of the piston assembly 3 are realized by the driving of the gun body assembly 1;

the trigger assembly 4 is used for realizing an operation body of pressurizing the upper liquid spraying liquid; the trigger assembly 4 is respectively connected with the gun body assembly 1 and the pump body assembly 2 in a rotating way; the movement and the reset of the gun body assembly 1 are realized by the driving of a trigger assembly 4.

This spray gun still includes a screw thread circle 8 with pump body activity joint, and 8 inboards of screw thread circle are provided with and are used for realizing the structure of splining the function with the cooperation of liquid container to satisfy the requirement of electricity merchant's transportation, avoid not hard up the problem that liquid leakage polluted the environment appearing in the transportation. The lower part of the pump body is also connected with a pipette 9 in a plug-in manner, the pipette 9 is made of PP materials, compared with the traditional PE materials, the pulling and supporting force is greatly increased, and the requirement of one-time recovery is met. All components of the spray gun are made of environment-friendly recyclable materials.

The gun body assembly 1 comprises a gun body 10, a nozzle assembly 11 embedded in the gun body 10 and a soft rubber elastic piece 12. In this embodiment, rifle body, nozzle assembly and flexible glue bullet spare are independent subassembly, can carry out the design of isostructure as required to satisfy different liquid and user's needs, especially nozzle assembly, can make into different structures in order to realize different spraying shapes and spraying effect, and as a key part flexible glue bullet spare of this spray gun, the design of its structure and elasticity size then has decided the speed of playing to spout and has played the effect of spouting to and cut off and sealed effect.

As shown in fig. 4, the gun body 10 includes an upper liquid gun body 13 and a liquid spraying gun body 14, and an axis of the upper liquid gun body 13 and an axis of the liquid spraying gun body 14 form an included angle. In this embodiment, the upper liquid spray gun body 13 and the liquid spray gun body 14 are disposed at an angle of 90 degrees.

As shown in fig. 5, an upper liquid cavity 15 is arranged inside the upper liquid gun body 13, a liquid outlet cavity 16 is arranged inside the liquid spray gun body 14, an on-off cavity 17 is arranged at the joint of the upper liquid cavity 15 and the liquid outlet cavity 16, a sealing ring platform 18 is coaxially arranged inside the on-off cavity 17 and the upper liquid cavity 15, a pressurizing cavity 19 communicated with the upper liquid cavity 15 and the on-off cavity 17 is arranged inside the sealing ring platform 18, and the soft rubber elastic part 12 is arranged inside the on-off cavity 17 in a pressing manner and is matched with the sealing ring platform 18 to realize the on-off of the upper liquid cavity 15 and the liquid outlet cavity 16; and a sealing clamping groove 6 used for clamping the piston is arranged on the wall of the upper liquid cavity 15.

In this embodiment, the gun body 10 is an integrated structure, and the basic structure includes an upper liquid gun body and a liquid spraying gun body, and the upper liquid gun body and the liquid separating gun body are arranged at an included angle of 90 degrees or 120 degrees. The size of the included angle can be randomly selected within a range of 180 degrees according to design requirements, and the selection of 90 degrees or 120 degrees is based on the habit of a user and the operation comfort level. Go up liquid gun internal portion and be provided with the sap cavity, the internal portion of hydrojet gun is provided with out the sap cavity for realize the setting of the internal liquid channel of rifle, set up the break-make chamber in last sap cavity and play sap cavity transitional coupling department, be used for setting up flexible glue bullet spare, thereby control liquid channel's break-make. In order to realize effective opening and closing of flexible glue bullet piece, be provided with the seal ring platform at break-make intracavity portion, the inside pressure boost chamber that the bore is less than last sap cavity that is provided with of seal ring platform, when pulling trigger subassembly, trigger subassembly drives piston assembly compression pump body subassembly when gaseous, thereby inside atmospheric pressure is through pressure boost chamber with flexible glue bullet piece jack-up upwards open the passageway, when inside atmospheric pressure is less than the elasticity of flexible glue bullet piece, flexible glue bullet piece resets rapidly, block the liquid break-make, thereby can realize cutting off liquid in the twinkling of an eye, stop the dropping liquid problem. Go up the liquid intracavity portion and be provided with sealed draw-in groove for the joint of convenient piston assembly to make things convenient for rifle body to drive piston assembly and slide from top to bottom along pump body is inside, realize gas compression, go up liquid, hydrojet process.

The upper liquid gun body 13 comprises a pressing body 131 and a sliding body 132 which are arranged along the same axis, a rotary pressing piece 133 is arranged on the outer wall of the pressing body 131, and a sliding rail 134 is arranged on the outer wall of the sliding body 132 along the axial direction. In this embodiment, the rotary pressing member 133 is configured to engage with an oval stroke slot on the trigger by using two rotating shafts. In this embodiment, the upper liquid gun body is integrally provided with a pressing body and a sliding body, the pressing body can be arranged to be of a polygonal structure, and the sliding body is arranged to be of a cylindrical structure. Set up the symmetry on the outer wall of pressing the body and be equipped with two and rotate the pressing piece, it uses pivot structural style to rotate the pressing piece as preferred structure, pass through the travel slot cooperation on rotation pressing piece and the trigger, during the use, the trigger rotates, the travel slot that drives oval or waist shape structure rotates, thereby press and rotate the downward motion of liquid rifle body in the pressing piece realization, only can prevent circumferential direction along axial motion and in order to realize pressing the in-process sliding body, consequently be provided with two slide rails 134 of symmetry on the outer wall of sliding body, two slide rails cooperate with two rifle body spouts on the combination, thereby guarantee when the rifle body slides from top to bottom, all the time along rifle body spout along axial slip, and can not produce relative rotation, the synchronous pressing effect of trigger with the rifle body has been guaranteed.

The nozzle assembly 11 includes a nozzle 110 and a liquid guiding body 111, as shown in fig. 7, the liquid guiding body 111 includes a flow guiding body 112, a flow dividing body 113 and a connecting body 114, which are integrally arranged along the same axis, the flow guiding body 112 is arranged in a cone structure, the large end of the flow guiding body 112 is connected with the flow dividing body 113, the flow dividing body 113 is axially provided with a plurality of flow dividing grooves 115, and the diameter of the connecting body 114 is smaller than that of the flow dividing body 113; as shown in fig. 6, the nozzle 110 has a multi-groove 116 structure, the nozzle 110 is sleeved with the connecting body 114, and a liquid outlet gap L is formed between the nozzle 110 and the connecting body 114. The nozzle assembly is in order to realize the design of various spraying shapes and spraying effects, adopt different nozzle assemblies then can produce different spraying shapes and spraying effects, the nozzle adopts the multislot structure, can be multislot structures such as two grooves, three grooves, four grooves, five grooves and six grooves, and the design of groove prefers to use the inclined groove as the owner, also can the axis owner center of nozzle, along axis to each groove of rotation design all around, each groove from the outside notch presentation of center to increase structural design, this kind of preferred scheme makes spraying effects more exquisite. In this embodiment, the nozzle adopts the three-groove structure, and three cell bodies are the slope design of circumference rotation type moreover, and the fluting width of three cell bodies presents the increase structural design from the center outwards to realize more exquisite injection effect. The purpose of leading liquid is in order to realize that the liquid that gets into liquid cavity inside from last liquid chamber spouts into the nozzle from different positions through baffle, reposition of redundant personnel to make the liquid of following the nozzle blowout can be more exquisite. The flow guiding body makes the liquid realize a process of circumferentially dispersing and flowing out from a bundle of flow guiding body in the liquid outlet cavity, and the liquid which is dispersed and flowed out is in a plurality of flow direction nozzles through the flow dividing grooves on the flow dividing body, so as to spray fine and smooth spray from the grooves of the nozzles. In this embodiment, three shunt grooves are uniformly distributed. Therefore, the design that liquid flows from the circumference to the three shunting grooves in a centralized way in a dispersed way is realized, and the spraying to the nozzle is further realized.

As shown in fig. 8 and 9, a sealing groove 120 is formed in the soft rubber elastic member 12, and radial liquid outlets 121 are uniformly distributed on the outer side of the sealing groove 120; soft glue bullet spare 12 includes flexible glue deformation body 122 and supporter 123, the inside of flexible glue deformation body 122 be provided with deformation chamber 124, deformation chamber 124 and seal groove 120 between be provided with isolation deformation piece 125, supporter 123 equipartition set up the formation in flexible glue deformation body 122's bottom and supporter 123 interval each other radial play liquid tank 121. The purpose of flexible glue bullet piece makes it upwards open through internal pressure, thereby make liquid channel open, and when internal pressure diminishes, then can realize cutoff in the twinkling of an eye by self-sealing liquid channel, avoid the dropping liquid problem, based on this, be provided with the seal groove that is used for opening and breaks off liquid channel on this flexible glue bullet piece, and the seal groove outside is equipped with a plurality of radial liquid grooves, when the flexible glue bullet piece is in encapsulated situation, disconnection does not communicate between seal groove and the radial liquid groove, when the flexible glue bullet piece is in the open mode, then liquid flows out the liquid cavity through radial liquid groove flow direction behind the seal groove, realize liquid channel's intercommunication.

In this embodiment, flexible glue bullet spare formula structure as an organic whole, including an annular flexible glue deformation body and a plurality of supporter, the inside of flexible glue deformation body is provided with the deformation chamber, and deformation chamber and seal groove set up relatively along two axial directions of flexible glue bullet spare, and deformation chamber and seal groove realize keeping apart sealing connection through an isolation deformation piece. In this embodiment, keep apart the flakiness and play an integrated into one piece with the flexible glue, keep apart the flakiness and be the arc structure to the inside protrusion setting of deformation chamber, the cross-section of seal groove is trapezium structure design simultaneously, the seal groove with be the cooperation of the sealed ring platform 18 of toper structural design, realize sealed and open, when opening, upwards play whole flexible glue bullet piece through inside atmospheric pressure, the seal groove is sealed at sealed ring bench when closing.

The shape of the isolation deformation sheet can be any other structural shape as long as the elastic deformation of the soft rubber elastic piece can be met to realize the opening and closing functions, and the isolation deformation sheet can also be a cone structure and structures such as square, round and arch structures. The specific parameters of the soft rubber elastic piece, such as the elastic force, the deformation and the like, are designed and manufactured according to the design requirements of the whole spray gun, the internal design pressure of the spray gun, the properties of the used liquid and the like. Different spray gun sizes, different liquids, concrete parameters are different, but as long as elastic deformation can be carried out, thereby realizing the on-off of a liquid channel.

The pump body assembly 2 comprises a combination body 20 and a pump body 21, and the pump body 21 and the combination body 20 are connected in a multi-sealing structure. The pump body subassembly changes the traditional designing requirement by a plurality of part assembly, only design a combination and a pump body, and simultaneously, be connected through many seal structure between combination and the pump body, many seal structure in this embodiment realizes multiple sealed through sealed bulge loop on the pump body and the inside sealed annular groove of combination, such seal structure is sealed effectual, the design of simplifying of pump body subassembly for whole spray gun is more succinct, the sealed poor problem of effect that the multipart connection exists has been reduced, and the part is few moreover, the cost of manufacture has been reduced, it is more convenient to assemble.

As shown in fig. 11, a piston cavity 22 is arranged inside the pump body 21, an insertion tube cavity 23 is arranged at the bottom of the pump body 21, a valve seat 24 is coaxially arranged at the joint of the insertion tube cavity 23 and the piston cavity 22, a valve body stroke cavity 25 is arranged inside the valve seat 24, a back pressure type elastic limiting structure 26 is arranged on the valve seat at the upper part of the valve body stroke cavity 25, and a valve body 7 is arranged inside the valve body stroke cavity 25. An air return pressure relief hole 27 communicated with the interior of the pump body is formed in the side wall of the middle part of the pump body 21; the lower side wall of the pump body 21 is provided with a plurality of pressure relief grooves 28 communicated with the interior of the pump body.

In this embodiment, the pump body adopts the integral type structure, and the inside piston chamber that is provided with of pump body, the concrete structure in piston chamber be greater than the diameter in lower part piston chamber for the diameter in upper portion piston chamber, realizes increasing, last liquid and hydrojet operation through the cooperation realization of piston chamber and piston to the inside gaseous compression of pump body, and pump body bottom sets up the intubate chamber and is for the convenience connect the card of pipette 9 and connect to the realization enters into the piston chamber with the inside liquid of liquid container through the pipette. In this embodiment, be provided with a disk seat in the inside an organic whole of the pump body, in order to realize the spacing to the motion stroke of valve body to guarantee that the valve body is through effectively opening and closing rapidly, consequently set up back pressure formula elasticity limit structure on disk seat upper portion, this pressure formula elasticity limit structure can be the jack catch formula structure, also can be different shapes such as spacing piece structure of arc. Set up valve body stroke chamber in that the disk seat is inside, can effectively open and the stroke of opening can guarantee the last liquid volume of design can effectively go up the liquid operation in order to guarantee the valve member, can return fast and cut off the passageway after the liquid operation is accomplished. The valve body can be a non-metal ball valve, for example, PP plastic beads are adopted, and can also be a non-metal valve, for example, PP plastic valves, so that the whole body can be recycled, and the resource waste is reduced. In this embodiment, the valve body is made of PP plastic beads. Set up return air pressure release hole and a plurality of pressure release groove on the pump body, the design in return air pressure release hole has realized that a hole is multi-functional, this return air pressure release hole can be in order to realize the return air of spray gun operation, again can be when piston downstream compressed gas, when the piston compression is to pressure release groove department, realize quick pressure release's effect together with pressure release groove, thereby the pressure release is fast to go up liquid velocity, and simultaneously, can make the inside flexible glue bullet spare of spray gun subassembly self-sealing when going up liquid, prevent the air reflux, seal in the twinkling of an eye, cut off liquid in the twinkling of an eye, avoid the emergence of dropping liquid phenomenon.

As shown in fig. 10, a sliding cavity 201 is axially arranged on the combined body 20, a gun body sliding groove 202 is arranged on the cavity wall of the sliding cavity 201 in parallel to the axis of the sliding cavity, and a clamping groove 203 penetrating through the sliding cavity is radially arranged on the combined body 20; the on-off member 5 is movably arranged in the clamping groove 203 in a penetrating way and can extend and retract along the radial direction. The combined body 20 is integrally provided with a hinge body 29 in an outward extending manner, and the hinge body 29 and the axis of the combined body 20 form an included angle; one side of the articulated body 29 facing the axis of the combined body is provided with an installation limiting groove 290; the free extending end of the hinge body 29 is provided with a trigger connection 291.

The combination body sets up the slip chamber along the axial is in order to realize with the cooperation of last liquid rifle body on the rifle body that the liquid rifle body can slide from top to bottom along the slip chamber, simultaneously, is provided with sliding gap H between the chamber wall of the outer wall of going up the liquid rifle body and slip chamber, and sliding gap H forms the gas passage that outside gas entered into the piston chamber simultaneously. The wall of the sliding cavity is provided with a gun body sliding groove, so that the gun body sliding groove is matched with a sliding rail on the sliding body to realize axial sliding and limit circumferential rotation of the sliding body. The clamping groove is formed in the combined body, so that the on-off piece is arranged in the clamping groove in a penetrating mode, the on-off piece is pressed to lock and unlock the gun body in an axial sliding motion, when the gun body needs to be unlocked, the on-off piece is pressed inwards, a trigger can be pulled, and the spray gun can be normally used; when needing the locking, reverse pressing is led to the disconnected piece, makes to lead to the disconnected piece and withdraws from to the draw-in groove outside, and the rifle integument locking limits the trigger and presses, can prevent effectively that the transportation from revealing the emergence that causes the pollution phenomenon, also can avoid the injury that children's maloperation caused. The trigger connecting structure 291 is a hinge shaft symmetrically disposed at both sides of the hinge body. The combination body is arranged to realize the connection between the gun body and the pump body, further realize the gun body to drive the piston to move in the piston cavity of the pump body, compress the gas to realize the liquid feeding and spraying operation, the gun body can be connected with the pump body through the combination body, the arrangement of parts can be effectively reduced, a hinge body is integrally and outwardly extended on the combination body and is used for realizing the hinge joint with the trigger and providing a rotating fulcrum for the rotation of the trigger, meanwhile, the arrangement of the limit groove for installing the elastic piece is convenient, so that the elastic reset piece can be effectively arranged between the combined body and the trigger, the elastic reset piece is compressed by the rotation of the trigger to deform so as to generate effective restoring force, thereby driving the trigger, the gun body and the piston to reset, realizing the pressurization of the internal air pressure by reciprocating operation of the trigger, when the pressure reaches a set value, the liquid in the liquid container jacks up the soft rubber elastomer to realize liquid spraying. The hinged body and the axis of the combined body form a certain included angle, so that the trigger can have an effective rotation stroke, and the stroke requirement of the gun body driving the piston to compress gas in the piston cavity is met. The size of an included angle between the hinged body and the axis of the combined body is set according to the rotation stroke, generally 15-75 degrees are used as the preferred angle, and other angles are determined according to specific design requirements. The angle in this embodiment is 45 degrees.

As shown in fig. 12, the piston assembly 3 includes a connecting body 31 and a piston body 32 which are integrally formed; a through medium cavity 33 is arranged inside the connecting body 31 and the piston body 32, and a sealing clamping body 34 used for clamping with the gun body is arranged on the outer wall of the upper part of the connecting body 31; the piston body 32 has a double-sealing structure. In this embodiment, the piston assembly is of an integrated structure, and includes a longer cylindrical connecting body and a piston body with a double-sealing structure, and a through medium cavity is provided inside the connecting body and the piston body, and the medium cavity is provided to facilitate the circulation of compressed gas and liquid. And the connector need be connected with the sealed plug-in card of the last liquid cavity of the internal portion of rifle, consequently, set up sealed joint body on the outer wall of connector, in this embodiment, sealed joint body is the joint arch. The double-sealing structure on the piston body can ensure that the piston opens the air return pressure relief hole when compressing air downwards in the movement process in the use process, and seals the whole piston cavity when resetting upwards, thereby blocking the gas passage of the outside gas and the inside communication of the liquid container.

The trigger assembly 4 comprises a trigger 40 and an elastic resetting piece 41, wherein the elastic resetting piece 41 is abutted between the trigger 40 and the pump body assembly 2 and realizes elastic deformation and resetting by operating the trigger 40. In the embodiment, the trigger assembly comprises a trigger and an elastic reset piece, the reset of the trigger is realized through the elastic reset piece, so that the gun body and the piston are driven to reset through the trigger, the structural design that the traditional spray gun resets by using a spring is changed, the problem that the whole recovery of the spray gun cannot be realized due to the adoption of a metal spring is avoided, the elastic reset piece can be made of non-metal materials, such as plastics, elastic rubber and the like, as long as the materials can meet the design requirement of the elastic force of the elastic reset piece, the non-metal materials are adopted as the elastic reset piece to replace the traditional metal spring, the application space can be greatly improved, the environment-friendly recovery and utilization are realized, the waste of raw materials and the pollution to the environment are reduced, and more importantly, the elastic reset piece can be subjected to the adaptive design of the elastic force and the structural, can meet the design requirements of different types of spray guns. In this embodiment, the elastic reset piece is made of a plastic material.

As shown in fig. 3, the trigger 40 is integrally provided with a pulling portion 42, a rotating portion 43 and a hinge portion 44 in an arc-shaped housing structure, the hinge portion 44 is provided with a combined body hinge structure 45, a travel opening 46 is formed in the housing where the rotating portion 43 is located along the rotation direction of the trigger, a limit block 47 is arranged on the inner wall of the housing where the rotating portion 43 is located, a travel groove 48 in an oval or waist-shaped structure is formed in the limit block 47, and a reset member deformation cavity 49 is formed in the rotating portion housing on the side of the limit block 47 facing the hinge portion. The combination hinge structures 45 are two symmetrically arranged hinge holes. In the embodiment, the trigger is integrally arranged in an arc-shaped shell structure, so that the design requirement of attractive appearance of the whole leaf gun can be considered, meanwhile, all functions can be integrated on the trigger to reduce the application of parts, the trigger is integrally provided with a pulling part for the operation of pulling the trigger by a user, the rotating part is designed to realize that the trigger rotates around a rotating point by taking a hinge structure on the hinge body as the rotating point, so that the stroke opening on the spray gun body has a relative rotation stroke relative to the spray gun body which is arranged in the stroke opening in a penetrating way, after the rotation stroke, namely when the stroke groove on the limiting block rotates the extreme position, the stroke groove and the rotation pressing piece on the upper liquid pump body are pressed and moved by the relative motion conversion, and the stroke groove presses and rotates the pressing piece to drive the gun body to move downwards, thereby realizing the compressed gas operation of the piston and further realizing the operation of upper liquid and spraying liquid. The installation limiting groove on the resetting piece deformation cavity and the combination body jointly realizes the installation limiting of the elastic resetting piece, so that the deformation of the resetting piece deformation cavity and the installation limiting groove is realized, the elastic resetting force is generated, and the gun body and the piston are driven to reset.

The elastic reset piece 41 is a strip-shaped elastic piece or an arc-shaped elastic piece. The structure of the elastic reset piece is comprehensively set according to the restoring force of the trigger, the gun body and the piston which are driven by the elastic reset piece, the elastic piece of the arc opening structure is taken as the optimal scheme, and other structures can be various different structural forms such as an elastic strip, an elastic assembly and the like. In this embodiment, the elastic reset piece is a spring sheet which is made of plastic material and has a wide middle and narrow ends.

As shown in fig. 13, the on-off member 5 is provided with a gun body sliding hole 50, a gun body sliding groove 51 is provided on the hole wall of the gun body sliding hole 50, and a limit table 52 is provided inside the gun body sliding hole 50. In this embodiment, the on-off part is used for locking and opening the sliding of the gun body and has a switch function, so that the on-off part extends to be marked with an open character and a closed character on two end faces outside the combined body respectively, the gun body sliding hole is formed in the on-off part, the gun body slides up and down to realize normal operation of the spray gun when the gun body needs to slide, the limiting table is arranged below the sliding body when the on-off part exits from the clamping groove, so that the upward movement of the gun body is limited, the locking of the gun body is realized, and the gun body sliding groove is arranged to slide in cooperation with the sliding rail on the sliding body.

As shown in fig. 14a, 14b and 14c, the operation of the spray gun for feeding liquid and spraying liquid is as follows: as shown in fig. 14a, the spray gun is in a normal locking state, firstly, the on-off member 5 is pushed from one end marked on the on-off member 5 to the inside of the combined body 20, the trigger 40 is pulled, the hinge portion 44 on the trigger 40 relatively rotates with respect to the hinge body 29 on the combined body 20, at the same time, the stroke slot 48 inside the trigger also rotates with respect to the rotating pressing member 133 on the gun body 10, at this time, the elastic restoring member 41 is compressed, when the trigger continues to rotate to generate a downward pressing force on the rotating pressing member 133, the gun body 10 is driven to slide downwards along the sliding cavity 201 inside the combined body 20, the piston assembly 3 is driven to compress the gas inside the piston cavity 22, and as the gas inside the piston cavity 22 is compressed, the gas pressure presses the valve body 7 downwards to seal the valve seat 24, at this time, the compressed gas can only flow to the soft elastic member 12 through the medium cavity 33 inside the piston assembly, the soft rubber elastic piece 12 deforms and bounces upwards under the action of air pressure to make room, the trigger is loosened, the soft rubber elastic piece 12 automatically restores and seals the annular sealing table 18 to achieve sealing, at the moment, the pressure in the piston cavity 22 is low and the pressure in the liquid container is low, and liquid (as shown by an arrow in fig. 14 c) is forced to jack up the valve body 7 upwards from the liquid suction pipe 9 and then enters the piston cavity 22. And pulling the trigger again, so that the liquid enters the medium cavity 33, passes through the space left by the soft rubber elastic piece 12, enters the liquid outlet cavity 16 through the sealing groove 120 and the radial liquid outlet groove 121, is guided by the guide body 112, and enters the multi-groove 116 structure of the nozzle through the diversion groove 112 and the liquid outlet gap L, and finally liquid spraying is realized. When the trigger is released, the trigger is reset under the action of the elastic force of the reset elastic piece 41, when the trigger is reset, the travel groove 48 on the trigger is matched with the rotary pressing piece 133 on the gun body 10 to drive the gun body to reset upwards, the gun body 10 resets upwards to drive the piston assembly 3 to reset, and at the moment, the liquid in the liquid container enters the piston cavity. The continuous liquid feeding and spraying operation can be realized by pulling the trigger to and fro.

As shown in fig. 15, during the process of pressurizing, applying liquid and spraying liquid by pulling the trigger, the flow process of the external gas is as follows: pulling trigger 40, rifle body 10 downstream drives the in-process of piston assembly 3 compression piston chamber 22 inside gas, outside gas (as shown by the arrow in the figure) enters into piston chamber 22 through the slip clearance H between sliding body and the sliding chamber, when piston assembly 3 moves piston chamber 22 bottom pressure release groove 28, return air pressure release hole 27 and the inside intercommunication of liquid container, the gas that enters into piston chamber 22 inside enters into liquid container through return air pressure release hole 27, and simultaneously, compressed gas by the piston compression also enters into liquid container through pressure release groove 28 and realizes pressure release in the twinkling of an eye, the design cooperation top of pressure release in the twinkling of an eye flexible glue bullet piece 12, can realize cutting off liquid in the twinkling of an eye, avoid the emergence of dropping liquid phenomenon.

The spray gun is designed completely new to the prior art, in particular to an innovative design aiming at the defects of the prior art that the traditional spring is adopted to realize the reset and the reset is realized through the air pressure, under the premise of not changing the integral structure of the spray gun, under the condition of meeting the requirements of functions of pressurizing, feeding liquid, spraying liquid and the like of the spray gun according to the working principle of the spray gun, the spray gun is characterized in that firstly, the spray gun is designed in an innovative way aiming at the problem that the reset is realized by arranging an internal spring structure and an external spring structure, the traditional reset spring is omitted by adopting the concept of not arranging the traditional spring, the gun body component is adopted to drive the piston component to enter the compressed gas to move and reset, the movement and the reset of the gun body assembly are realized through a trigger assembly, and an elastic reset piece made of non-metallic materials is adopted in the trigger assembly to generate reset elastic force. Because the trigger subassembly rotates with rifle body subassembly and pump body subassembly respectively and is connected, pull the trigger subassembly in the use, the trigger subassembly can rotate around two rotation points, because rifle body subassembly is for pump body subassembly sliding connection in two rotation points, consequently, the trigger subassembly is at the rotation in-process because pump body subassembly is motionless relatively so the trigger subassembly only carries out rotary motion for pump body subassembly, and the trigger subassembly is when rotating with the rotation point of pump body subassembly, after the trigger subassembly rotates to a certain position, continue pulling the trigger subassembly, then the trigger subassembly can drive rifle body subassembly downstream, thereby the rifle body subassembly slides down along pump body subassembly and drives piston assembly downstream above that promptly, compress the inside gas of piston assembly, thereby the operation of liquid spray liquid is gone up in the realization. When loosening trigger subassembly after, trigger subassembly can automatic re-setting under the drive of elasticity piece elasticity that resets, trigger subassembly automatic re-setting drives rifle body subassembly and upwards resets, and simultaneously, rifle body subassembly drives piston assembly and resets, therefore, need not set up built-in spring or external spring at piston inside or outside at whole reset in-process, thereby make whole spray gun can realize the whole functions of spray gun under the prerequisite that does not set up traditional spring like, and so the spray gun is whole can all make through the environmental protection material owing to not set up traditional metal spring, and then realize whole the recovery. This spray gun is owing to adopt the trigger subassembly to drive the rifle body subassembly and then drive piston assembly and reset, has avoided through gasbag, atmospheric pressure reset existence to reset the pressure requirement height, the emergence of phenomenon such as the effect of resetting is poor. This spray gun spare part is few, and overall structure is compact and simple, and all parts all adopt easy dismouting formula connected mode, convenient assembling, and rifle body subassembly and pump body subassembly realize sliding or spacing through an break-make spare moreover, can realize locking both when not using, can not realize the hydrojet phenomenon because of transportation or unexpected operation, and only need open the break-make spare when using then both can the relative slip, from then can realizing pressure boost, liquid feeding and hydrojet operation.

The above-described embodiments are only some, but not all embodiments of the present invention. Meanwhile, based on the embodiments described in the present invention, all other embodiments obtained on the basis of the technical solutions of the present application by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A spray gun, characterized by comprising:

the gun body assembly (1) is used for realizing a movable main body for liquid feeding and spraying;

the gun body assembly (1) is connected with the pump body assembly (2) in a sliding manner;

the piston assembly (3) is arranged in the pump body assembly (2) and is in sealed insertion and clamping connection with the gun body assembly (1), and the movement and the resetting of the piston assembly (3) are realized by the driving of the gun body assembly (1);

a trigger assembly (4) for realizing an operation body of pressurizing the upper liquid spraying liquid; the trigger assembly (4) is respectively connected with the gun body assembly (1) and the pump body assembly (2) in a rotating way; the movement and the reset of the gun body assembly (1) are realized by the driving of a trigger assembly (4).

2. The spray gun of claim 1, wherein: the gun body assembly (1) comprises a gun body (10), a nozzle assembly (11) embedded in the gun body (10) and a soft rubber elastic piece (12); the spray gun is characterized in that the gun body (10) comprises an upper liquid gun body (13) and a liquid spraying gun body (14), and the axis of the upper liquid gun body (13) and the axis of the liquid spraying gun body (14) are arranged at an included angle.

3. The spray gun of claim 2, wherein: an upper liquid cavity (15) is arranged inside the upper liquid gun body (13), a liquid outlet cavity (16) is arranged inside the liquid spraying gun body (14), an on-off cavity (17) is arranged at the joint of the upper liquid cavity (15) and the liquid outlet cavity (16), a sealing ring platform (18) is coaxially arranged inside the on-off cavity (17) and the upper liquid cavity (15), and a pressurizing cavity (19) communicated with the upper liquid cavity (15) and the on-off cavity (17) is arranged inside the sealing ring platform (18); the soft rubber elastic piece (12) is arranged in the on-off cavity (17) and is matched with the sealing ring platform (18) to realize the on-off of the upper liquid cavity (15) and the liquid outlet cavity (16).

4. The spray gun of claim 3, wherein: the outer wall of the upper part of the upper liquid gun body (13) is provided with a rotary pressing piece (133), and the outer wall of the lower part of the upper liquid gun body (13) is provided with a sliding rail (134) along the axial direction.

5. The spray gun of claim 2, wherein: the nozzle assembly (11) comprises a nozzle (110) and a liquid guide body (111), wherein a guide body (112) and a diversion channel (115) are arranged on the liquid guide body (111); the nozzle (110) is of a multi-groove (116) structure; a liquid outlet gap (L) is formed between the nozzle (110) and the liquid guide body (111) in a surrounding mode.

6. The spray gun of claim 2, wherein: a sealing groove (120) is formed in the soft rubber elastic piece (12), and radial liquid outlet grooves (121) are uniformly distributed in the outer side of the sealing groove (120); the flexible glue elastic piece (12) is internally provided with a deformation cavity (124), and an isolation deformation sheet (125) is arranged between the deformation cavity (124) and the sealing groove (120).

7. The lance defined in any one of claims 1 to 6 wherein: the pump body assembly is a springless assembly, the pump body assembly (2) comprises a combination body (20) and a pump body (21), and the pump body (21) is connected with the combination body (20) in a multi-seal structure.

8. The spray gun of claim 7, wherein: the pump body (21) inside be provided with piston chamber (22) and disk seat (24), disk seat (24) inside be provided with valve body stroke chamber (25), the disk seat on valve body stroke chamber (25) upper portion on be provided with back pressure formula elasticity limit structure (26), valve body stroke intracavity portion be provided with valve body (7).

9. The spray gun of claim 7, wherein: the side wall of the middle part of the pump body (21) is provided with an air return pressure relief hole (27) communicated with the inside of the pump body; the side wall of the lower part of the pump body (21) is provided with a plurality of pressure relief grooves (28) communicated with the inside of the pump body.

10. The spray gun of claim 7, wherein: a sliding cavity (201) is axially arranged in the combined body (20), a gun body sliding groove (202) is arranged on the cavity wall of the sliding cavity (201) in parallel to the axis of the sliding cavity, and a clamping groove (203) penetrating through the sliding cavity is radially arranged on the combined body (20).

11. The spray gun of claim 7, wherein: the combined body (20) is integrally provided with a hinge body (29) in an outward extending mode, and the hinge body (29) and the axis of the combined body (20) are arranged in an included angle mode; one side of the hinged body (29) facing the axis of the combined body is provided with an installation limiting groove (290); the free extending end of the hinge body (29) is provided with a trigger connection structure (291).

12. The lance defined in any one of claims 1 to 6 wherein: the piston assembly (3) is a springless assembly, and a through medium cavity (33) is arranged in the piston assembly (3); the piston body (32) is of a double-sealing body structure.

13. The lance defined in any one of claims 1 to 6 wherein: the trigger assembly (4) comprises a trigger (40) and an elastic resetting piece (41), wherein the elastic resetting piece (41) is abutted between the trigger (40) and the pump body assembly (2) and is elastically deformed and reset through the trigger.

14. The spray gun of claim 13, wherein: the trigger (40) is integrally arranged in an arc-shaped shell structure, a combined body hinge structure (45) is arranged on the trigger, a stroke opening (46) is formed in the trigger shell along the rotation direction of the trigger, and a stroke groove (48) and a reset piece deformation cavity (49) are formed in the shell.

15. The spray gun of claim 13, wherein: the elastic reset piece (41) is integrally a strip-shaped elastic piece or an arc-shaped elastic piece.

16. The lance defined in any one of claims 1 to 6 wherein: the gun body assembly (1) and the pump body assembly (2) slide and limit through the on-off piece (5); the on-off piece (5) is provided with a gun body sliding hole (50), the hole wall of the gun body sliding hole (50) is provided with a gun body sliding groove (51), and a limiting table (52) is arranged inside the gun body sliding hole.