CN116498530A

CN116498530A - Injection pressure adjustment mechanism and corresponding diaphragm pump

Info

Publication number: CN116498530A
Application number: CN202310430342.6A
Authority: CN
Inventors: 熊颖申; 邓高彬; 雷立强
Original assignee: Shenzhen Cnht Ltd
Current assignee: Shenzhen Cnht Ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2023-07-28
Also published as: CN116498531A; CN113757087B; CN113757087A

Abstract

The application of this minute application provides a jet pressure guiding mechanism and corresponding diaphragm pump, jet pressure guiding mechanism includes fixture block and adjustment subassembly, and the fixture block setting is established in the play water through-hole, and the play water spring location sets up between fixture block and play water gluey head, and the water spring location sets up between end cover and water gluey head, and adjustment subassembly detachable sets up between the first components of a whole that can function independently piece and the second components of a whole that can function independently piece of fixture block. The adjusting part of diaphragm pump can slide to the butt joint mouth through the spout, the fly leaf simultaneously through with the extrusion of direction inclined plane for first components of a whole that can function independently piece and second components of a whole that can function independently piece are slided mutually and are kept away from, the fly leaf can slide gradually between first components of a whole that can function independently piece and second components of a whole that can function independently piece, and when sliding in place, the play water spring of fixture block both sides makes the butt joint mouth be located first movable position, and then makes the slider slide into the draw-in groove, forms automatic joint, accomplishes the adjustment to play water spring, can adjust to stable injection pressure, difficult emergence water leakage scheduling problem, convenient operation.

Description

Injection pressure adjustment mechanism and corresponding diaphragm pump

The application is a divisional application, and the application number of the original application is: 202111046272.1", application date is: the invention name of "2021, 09, 07" is: "diaphragm pump with reflux structure".

Technical Field

The invention relates to the field of electric pumps, in particular to a jet pressure adjusting mechanism and a corresponding diaphragm pump.

Background

The electric pump is a common fluid driving device in daily life, is widely applied to the fields of agricultural production, industrial production and the like, such as the membrane pump is increasingly widely applied to the fields of disinfection spraying, pesticide spraying, water pumping and car washing, garden equipment and the like in recent years, and particularly, the appearance of novel coronaviruses is generated, so that a large number of disinfection spraying equipment is generated. However, most of diaphragm pumps in the prior art have the technical problem of unstable spraying pressure, and further forward development and popularization and application in the field are severely limited.

It is desirable to provide a jet pressure adjusting mechanism and a corresponding diaphragm pump to solve the above-mentioned problems.

Disclosure of Invention

The invention provides a spray pressure adjusting mechanism and a corresponding diaphragm pump, which are used for solving the problem that the diaphragm pump in the prior art has unstable spray pressure.

In order to solve the technical problems, the technical scheme of the invention is as follows: the injection pressure adjusting mechanism is characterized in that the injection pressure adjusting mechanism is arranged on a pump body, end covers are arranged on two sides of the pump body, an isolation cavity is arranged between the end covers and a diaphragm, a water inlet channel and a water outlet channel are respectively arranged on the other two sides of the pump body, the isolation cavity is communicated with the water inlet channel through a water inlet through hole, a water inlet rubber head is arranged in the water inlet through hole through a water inlet spring elastic barrier, and a water outlet rubber head is arranged in the water outlet through hole through a water outlet spring elastic barrier;

the spray pressure adjusting mechanism comprises a clamping block and an adjusting component, the clamping block is arranged in the water outlet through hole, the water outlet spring is positioned between the clamping block and the water outlet rubber head, and the water inlet spring is positioned between the end cover and the water inlet rubber head;

the fixture block comprises a first split block and a second split block, the first split block and the second split block are arranged in the water outlet through hole in a sliding mode, the sliding extending track is consistent with the elastic direction of the water outlet spring, one side, away from the second split block, of the first split block and one side, away from the first split block, of the second split block are respectively provided with the water outlet spring, and the adjusting component is detachably arranged between the first split block and the second split block to extrude the first split block and the second split block, so that the elastic potential energy of the water outlet spring is adjusted.

In the invention, the adjusting component comprises a fixed part, a fixed plate and a movable plate, wherein the two fixed plates are respectively connected to two sides of the fixed part, the two fixed plates are positioned on the same plane, a connecting column is arranged on the fixed plate, and a plurality of movable plates are detachably connected with the connecting column, so that different numbers of movable plates can be adjusted to one fixed plate;

the fixed plate and the movable plate arranged on the fixed plate are arranged between the first split block and the second body block, so that the distance between the first split block and the second split block is adjusted.

The first fixing plate, the second fixing plate and the movable plate are respectively provided with a magnetic attraction part for mutual magnetic attraction and fixation, and the magnetic attraction parts are of annular structures.

In addition, the two ends of the fixing part are provided with sliding blocks, the inner wall of the water outlet channel is provided with sliding grooves matched with the sliding blocks, and one end, close to the clamping block, of each sliding groove is communicated with a clamping groove used for being clamped with the sliding blocks;

an opposite interface matched with the adjusting component is arranged between the first split block and the second split block, and the first split block and the second split block are arranged in the water outlet through hole in a sliding manner, so that the opposite interface is provided with a first movable position and a second movable position;

when the interface is positioned at the first movable position, the interface is opposite to the clamping groove;

when the butt joint interface is positioned at the second movable position, the butt joint interface is opposite to the sliding groove;

the water outlet springs on two sides of the clamping block enable the butt joint to be located at the first movable position, a guide inclined plane is arranged on the edge, close to the clamping groove, of the butt joint, and when the butt joint is located at the first movable position, the guide inclined plane is opposite to the sliding groove.

Further, the end cover is provided with an adjusting hole at the opposite position to the water inlet spring, an elastic sealing piece is integrally injection molded in the adjusting hole, the water inlet spring is contacted with the inner side of the elastic sealing piece, threads are arranged on the inner wall of the adjusting hole, one end, close to the outside, of the adjusting hole is connected with an adjusting screw, and the adjusting screw is contacted with the outer side of the elastic sealing piece so as to be used for extruding and adjusting the water inlet spring.

The invention also comprises a diaphragm pump which uses the injection pressure adjusting mechanism, and further comprises a motor, the pump body, an eccentric wheel, a driving piece, the diaphragm, the water inlet rubber head, the water inlet spring, the water outlet rubber head, the water outlet spring and a bearing;

the two sides of the pump body are respectively isolated by the diaphragms to form isolation cavities, the other two sides of the pump body are respectively provided with the water inlet channel and the water outlet channel, the isolation cavities are communicated with the water inlet channel through water inlet through holes, the isolation cavities are communicated with the water outlet channel through water outlet through holes, the water inlet rubber heads are elastically isolated by the water inlet springs and arranged in the water inlet through holes, the water outlet rubber heads are elastically isolated by the water outlet springs and arranged in the water outlet through holes, the eccentric wheels are connected between the driving piece and the motor, the eccentric wheels are rotationally connected with the driving piece through bearings, two connecting terminals for being connected with the diaphragms are respectively arranged on the two sides of the driving piece, the lower ends of the diaphragms are connected with the connecting terminals, and the upper ends of the diaphragms are provided with through holes for being in butt joint with the water inlet through holes and the water outlet through holes;

sleeves are arranged between the water inlet rubber head and the membrane, and between the water outlet rubber head and the membrane.

In the invention, one side of the output shaft of the motor is connected with a bracket, and two ends of the bracket extend out of the side surface of the motor so as to facilitate the connection of the bracket and the pump body.

In the invention, threads for connecting with an external pipeline are arranged on the outer sides of the water inlet channel and the water outlet channel.

In the invention, the eccentric wheel is made of powder metallurgy material, so that high-temperature deformation caused by friction is avoided.

In the invention, the diaphragm pump further comprises an elastic mechanism, wherein the elastic mechanism comprises a top cover, a first spring, a spring seat, a spring pad, a first screw rod and a sealing gasket;

the top cap with pump body fixed connection just forms and sets up the chamber, first spring the spring holder with the spring pad all is located set up the intracavity, just first spring coupling is in the spring pad with between the spring holder, the spring holder with sealing gasket contact, first screw rod piece with top cap threaded connection, first screw rod piece one end extends to set up the intracavity with the spring pad contact, the spring holder will sealing gasket elastic compression is in the backward flow intracavity, make sealing gasket elastic barrier the intercommunication between inlet channel with the outlet channel.

Compared with the prior art, the invention has the beneficial effects that: according to the diaphragm pump, the adjusting assembly can slide to the butt joint opening through the sliding groove, meanwhile, the movable plate is extruded by the guide inclined plane, so that the first split block and the second split block can slide away from each other, the movable plate can gradually slide between the first split block and the second split block, when the movable plate slides in place, the water outlet springs on two sides of the clamping block enable the butt joint opening to be located at the first movable position, the sliding block further slides into the clamping groove to form automatic clamping, adjustment of the water outlet springs is completed, stable spraying pressure can be adjusted, water leakage and the like are not easy to occur, and the diaphragm pump is convenient to operate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present invention.

Fig. 1 is a front view of a diaphragm pump of the present invention.

Fig. 2 is a right side view of the diaphragm pump of the present invention.

Fig. 3 is a sectional view taken along the line X-X in fig. 2.

FIG. 4 is a cross-sectional view taken along the Y-Y section line in FIG. 1

Fig. 5 is a schematic diagram of an exploded structure of the diaphragm pump of the present invention.

Fig. 6 is a schematic view of a structure in which a second spring and a second screw member are provided on a diaphragm pump according to the present invention.

Fig. 7 is a schematic structural diagram of the engaging member of the diaphragm pump of the present invention engaged with the first screw member.

Fig. 8 is a schematic structural view of a fixing plate of the diaphragm pump of the present invention.

Fig. 9 is a schematic structural view of a diaphragm pump setting adjustment assembly of the present invention.

Fig. 10 is a schematic structural view of an adjusting assembly of the diaphragm pump of the present invention.

Fig. 11 is a schematic view of the structure of the diaphragm pump of the present invention when the adjusting member is not inserted into the opposite port.

Fig. 12 is a schematic view of the structure of the diaphragm pump of the present invention when the adjusting assembly is inserted into the opposite interface.

Fig. 13 is a schematic view of the fixing holes and the mounting holes inside the top cover of the diaphragm pump of the present invention.

Fig. 14 is a schematic view of the structure in which the vertical rod is locked in the mounting hole and the connecting plate is limited in the fixing hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Most of diaphragm pumps in the prior art have the technical problem of unstable spraying pressure, and the further forward development and popularization and application in the field are severely limited.

The following is a first embodiment of a diaphragm pump that solves the above technical problems.

In the drawings, like structural elements are denoted by like reference numerals.

Referring to fig. 3 to 5, a first embodiment of a diaphragm pump according to the present invention is as follows: a diaphragm pump, comprising: the motor 11, the pump body 12, the eccentric wheel 19, the driving piece 18, the diaphragm 15, the water inlet rubber head 17, the water inlet spring 171, the water outlet rubber head 1C, the water outlet spring 1C1, the sealing gasket 156 and the elastic mechanism.

The two sides of the pump body 12 are respectively isolated by the diaphragms 15 to form isolation cavities 122, the other two sides are respectively provided with a water inlet channel 13 and a water outlet channel 14, the isolation cavities 122 are communicated with the water inlet channel 13 through water inlet through holes 131, the isolation cavities 122 are communicated with the water outlet channel 14 through water outlet through holes 141, the water inlet rubber heads 17 are elastically isolated and arranged in the water inlet through holes 131 through water inlet springs 171, the water outlet rubber heads 1C are elastically isolated and arranged in the water outlet through holes 141 through water outlet springs 1C1, the eccentric wheels 19 are connected between the driving piece 18 and the motor 11, and the two sides of the driving piece 18 are respectively connected with one diaphragm 15, so that the two isolation cavities 122 are isolated, and the diaphragm pump can generate large flow and large jet pressure.

The eccentric wheel 19 is externally sleeved with a bearing 1A, the eccentric wheel 19 is rotatably connected with a driving piece 18 through the bearing 1A, as shown in fig. 5, two connecting terminals for connecting with a diaphragm 15 are arranged on two sides of the driving piece 18, the lower end of the diaphragm 15 is connected with the driving piece 18, and the upper end of the diaphragm 15 is provided with a through hole for butting with a water inlet through hole 131 and a water outlet through hole 141.

The support 1B is connected to one side of the output shaft of the motor 11, and two ends of the support 1B extend out of the side face of the motor 11, so that the support 1B is conveniently connected with the pump body 12.

The sleeve 1D can be arranged between the water inlet rubber head 17 and the membrane 15 and between the water outlet rubber head 1C and the membrane 15, so that the replacement with low cost is convenient after aging and abrasion.

The outer sides of the water inlet channel 13 and the water outlet channel 14 can be provided with threads, so that the water inlet channel and the water outlet channel are reliably and stably connected with an external pipeline, and water leakage can not occur during long-time working.

The eccentric wheel 19 can be made of powder metallurgy materials, so that high-temperature deformation caused by friction can be effectively avoided, and the service life is effectively prolonged.

The pump body 12 is provided with a backflow cavity 157, the backflow cavity 157 is communicated with the water inlet channel 13 and the water outlet channel 14, and the sealing gasket 156 is elastically pressed and fixed in the backflow cavity 157 by the elastic mechanism, so that the sealing gasket 156 elastically blocks the communication between the water inlet channel 13 and the water outlet channel 14.

Referring to fig. 3, the elastic mechanism in the present embodiment includes a top cover 152, a first spring 154, a spring seat 155, a spring pad 153, and a first screw member 151.

Top cap 152 and pump body 12 fixed connection and formation set up the chamber, first spring 154, spring holder 155 and spring pad 153 all are located and set up the intracavity, and first spring 154 connects between spring pad 153 and spring holder 155, spring holder 155 and sealing gasket 156 contact, spring holder 155 can be spacing to first spring 154 formation, the bottom surface of spring holder 155 can form steady pressure to whole sealing gasket 156 simultaneously and admittedly, keep the accurate control to the backward flow, first screw member 151 and top cap 152 threaded connection, first screw member 151 one end extends to set up the intracavity and contacts with spring pad 153, make through the extrusion force of screwing up first screw member 151 adjustable to first spring 154.

In fig. 5, screws may be used to fixedly connect the top cover 152 and the pump body 12, and the end cover 121 and the pump body 12.

When the diaphragm pump of this embodiment works, the motor 11 drives the eccentric wheel 19 to rotate, so that the driving member 18 can be driven to reciprocate left and right together, the driving member 18 makes the diaphragm 15 move back and forth in the isolation cavity 122, in this process, the isolation cavity 122 on one side is compressed, after the fluid in the isolation cavity 122 is compressed, the pressure is increased, the elasticity of the water outlet spring 1C1 is overcome, the water outlet rubber head 1C is pushed to open the water outlet through hole 141 for draining, the isolation cavity 122 on the other side is pulled to be large, the pressure of the pulled isolation cavity 122 is reduced, the fluid in the water inlet channel 13 is convenient to overcome the elasticity of the water inlet spring 171, the water inlet rubber head 17 is pushed to open the water inlet through hole 131 for pumping, and when the motor 11 continuously rotates, the diaphragm pump can continuously form the action process of pumping and draining water.

In addition, when the working pressure of the water outlet channel 14 is too high, the pressure of the water outlet channel 14 overcomes the elastic force of the first spring 154, and pushes the sealing gasket 156 open, so that the excessive fluid enters the water inlet channel 13 through the backflow cavity 157 to form backflow protection, thereby ensuring accurate and stable spraying pressure.

The following is a second embodiment of a diaphragm pump that solves the above technical problem, wherein in the present embodiment, the same reference numerals are used for the same structures as those in the first embodiment.

Referring to fig. 6, a second embodiment of the diaphragm pump provided by the present invention is as follows:

a diaphragm pump, comprising: the motor 11, the pump body 12, the eccentric wheel 19, the driving piece 18, the diaphragm 15, the water inlet rubber head 17, the water inlet spring 171, the water outlet rubber head 1C, the water outlet spring 1C1, the sealing gasket 156 and the elastic mechanism.

Referring to fig. 6, the elastic mechanism in the present embodiment includes a top cover 23, a first spring 154, a spring seat 26, a spring pad 24, and a first screw member 21.

Top cap 23 and pump body 12 fixed connection and formation set up the chamber, first spring 154, spring holder 26 and spring pad 24 all are located and set up the intracavity, and first spring 154 connects between spring pad 24 and spring holder 26, spring holder 26 and sealing gasket 156 contact, spring holder 26 can be spacing to first spring 154 formation, the bottom surface of spring holder 26 can form steady pressure to whole sealing gasket 156 simultaneously and admittedly, keep the accurate control to the backward flow, first screw member 21 and top cap 23 threaded connection, first screw member 21 one end extends to set up the intracavity and contacts with spring pad 24, make through the extrusion force of screwing up first screw member 21 adjustable to first spring 154.

Referring to fig. 6, the elastic mechanism further includes: a second spring 25, a second screw member 22, and a connection plate 27.

A first boss 261 is arranged on the spring seat 26, a second boss 262 is arranged on the first boss 261, one end of the first spring 154 is positioned and sleeved on the periphery of the first boss 261, the second spring 25 is positioned at the inner side of the first spring 154, and one end of the second spring 25 is positioned and sleeved on the periphery of the second boss 262;

the top cover 23 is provided with a containing cavity, the first screw rod 21 is located in the containing cavity, the connecting plate 27 is connected in the containing cavity, the second screw rod 22 is in threaded connection with the connecting plate 27, the first screw rod 21 and the spring pad 24 are provided with axial through holes, the second screw rod 22 is located in the through holes, one end of the second screw rod 22 is connected with the second spring 25, and extrusion force to the second spring 25 can be adjusted by screwing the second screw rod 22.

Through the integration setting second spring 25 for but cooperation adjusts the elasticity of first spring 154 and second spring 25 to sealing gasket 156, makes the regulation to back flow pressure more meticulous, adjusts more diversified, also can reduce spring aging fatigue simultaneously and cause the elasticity to sealing gasket 156 to change, and elasticity stability is stronger.

In this embodiment, the top cover 23 is provided with a fixing hole 233, the fixing hole 233 extends along the radial direction of the top cover 23, the connecting plate 27 is in a strip shape, two ends of the connecting plate 27 are respectively and fixedly connected in one fixing hole 233, the elastic mechanism further comprises a clamping piece, the clamping piece is clamped on the top cover 23 along the radial direction of the top cover 23, and two ends of the clamping piece are blocked at two ends of the fixing hole 233 to limit the connecting plate 27.

In order to facilitate the subsequent operation of the fastening member on the first screw member 21, the two sides of the top cover 23 are provided with the lug portions 231, and the fastening member is fastened above the lug portions 231.

Referring to fig. 7, in the present embodiment, the fastening member includes a cross rod 281 and a longitudinal rod 282, two longitudinal rods 282 are screwed on two ends of the cross rod 281, a first mating groove 211 is disposed on the first screw member 21, and a second mating groove 221 matching with the longitudinal rod 282 is disposed on the second screw member 22, so that the second screw member 22 can be twisted by the longitudinal rod 282 to rotate.

The side rail 282 includes a first operative position and a second operative position on the cross rail 281.

When the longitudinal bars 282 are in the first operating position, the longitudinal bars 282 are positioned at the ends of the cross bars 281, and two longitudinal bars 282 are used to restrain the connection plates 27, see fig. 6.

When the longitudinal bars 282 are in the second working position, the longitudinal bars 282 are spaced from the end of the cross bar 281 by a predetermined distance, and the two longitudinal bars 282 are aligned with one of the first mating grooves 211, respectively, such that the first screw member 21 can be twisted to rotate by the fastener, as shown in fig. 7.

In addition, referring to fig. 8, the two lateral sides of the connection plate 27 are provided with the avoidance grooves 271 opposite to the first screw member 21, when the first screw member 21 is twisted by the fastening member, the avoidance grooves 271 can reduce interference to the first fastening member, on the other hand, the top surface and the bottom of the connection plate 27 are provided with the reinforcement portions 272 near the avoidance grooves, so as to supplement the strength of the connection plate 27.

Wherein, one side intercommunication of fixed orifices 233 is provided with the mounting hole 232 with fixed orifices 233 intercommunication, and the mounting hole 232 is used for reinforcing portion 272 to penetrate to holding the intracavity, and mounting hole 232 is the through-hole, and fixed orifices 233 are the blind hole, and the vertical pole 282 card is in mounting hole 232 and with connecting plate 27 restriction in fixed orifices 233.

The fixing holes 233 on both sides of the top cover 23 are of a central symmetry structure, the connection plates 27 are inserted into the top cover 23 through the mounting holes 232, and then the two ends of the mounting plates 27 can be screwed into the corresponding fixing holes 233 by rotating the connection plates 27.

The groove depth of the middle position of the clearance groove 271 is gradually reduced towards two ends and is a semicircular groove, and the height of the middle position of the reinforcing part 272 is gradually reduced towards two ends and is in a triangular block shape.

In the invention, the pump body 12 comprises end covers 121 on both sides, an isolation cavity 122 is arranged between the end covers 121 and the membrane 15, two ends of a water outlet through hole 141 are respectively connected with one isolation cavity 122, a clamping block 16 is arranged in the water outlet through hole 141, a water outlet spring 1C1 is positioned between the clamping block 16 and a water outlet rubber head 1C, and a water inlet spring 171 is positioned between the end covers 121 and the water inlet rubber head 17.

After long-time use, the springs are easy to fatigue, the elastic force of the water inlet spring 171 on the water inlet rubber head 17 is weakened, the elastic force of the water outlet spring 1C on the water outlet rubber head 1C is weakened, the spraying pressure is unstable, even water leakage and the like are caused, and the diaphragm pump is relatively troublesome to disassemble and repair, and the cost is high.

Therefore, referring to fig. 9 and 10, in the present embodiment, the clamping block 16 is configured as a first split block 161 and a second split block 162, the first split block 161 and the second split block 162 are slidably disposed in the water outlet hole 141, the sliding extending track is consistent with the elastic direction of the water outlet spring 1C1, and one side of the first split block 161 away from the second split block 162 and one side of the second split block 162 away from the first split block 161 are respectively provided with the water outlet spring 1C1.

The diaphragm pump further comprises an adjusting component 31, the adjusting component 31 is detachably arranged between the first split block 161 and the second split block 162 to extrude the first split block 161 and the second split block 162, the pressure of the clamping block 16 to the water outlet spring 1C1 is adjusted, the elastic potential energy of the water outlet spring 1C1 is adjusted, and the stability of water inlet and outlet is improved.

Specifically, referring to fig. 10, the adjusting assembly 31 includes a fixing portion 311, a fixing plate 313 and a movable plate 314, wherein the two fixing plates 313 are respectively connected to two sides of the fixing portion 311, the two fixing plates 313 are located on the same plane, a connecting column 315 is disposed on the fixing plate 313, and the plurality of movable plates 314 are detachably connected to the connecting column 315, so that different numbers of movable plates 314 can be adjusted to one of the fixing plates 313.

The fixed plate 313 and the movable plate 314 arranged on the fixed plate 313 are arranged between the first split block 161 and the second body block, so that the distance between the first split block 161 and the second split block 162 is adjusted, and meanwhile, different adjustment requirements on the elastic force of the water outlet spring 1C1 are met by adjusting different numbers of the movable plates 314.

The first fixing plate 313, the second fixing plate 313 and the movable plate 314 are respectively provided with a magnetic attraction part 316 for mutually and magnetically attracting and fixing, and the magnetic attraction parts 316 are of annular structures, so that the adjusted adjacent movable plates 314 and the fixed plate 313 and the movable plates 314 can be stably and tightly attached and connected.

Referring to fig. 9 and 10, two ends of the fixing portion 311 are provided with a slider 312, a chute 142 matched with the slider 312 is provided on an inner wall of the water outlet channel 14, and a slot 143 for clamping with the slider 312 is provided at one end of the chute 142 close to the clamping block 16.

Referring to fig. 11 and 12, an interface for matching with the adjusting component 31 is disposed between the first split block 161 and the second split block 162, and the first split block 161 and the second split block 162 are slidably disposed in the water outlet hole 141, so that the interface has a first movable position and a second movable position.

When the docking interface is in the first active position, the docking interface is opposite to the clamping slot 143.

When the interface is in the second active position, the interface is opposite to the chute 142.

The water outlet springs 1C1 on both sides of the clamping block 16 enable the abutting joint to be located at the first movable position, the edge, close to the clamping groove 143, of the abutting joint is provided with a guiding inclined plane 1621, and when the abutting joint is located at the first movable position, the guiding inclined plane 1621 is opposite to the sliding groove 142.

The adjusting component 31 can slide to the butt joint mouth through the spout, simultaneously fly leaf 314 is through the extrusion with direction inclined plane 1621 for first split piece 161 and second split piece 162 slide and keep away from each other, fly leaf 314 can slide gradually between first split piece 161 and second split piece 162, and when sliding in place, the water outlet spring 1C1 of fixture block 16 both sides makes the butt joint lie in first movable position, and then makes slider 312 slide into draw-in groove 143, forms automatic joint, accomplishes the adjustment to water outlet spring 1C1, convenient operation.

In addition, referring to fig. 9, an adjusting hole is provided on the end cover 121 opposite to the water inlet spring 171, an elastic sealing plate 32 is integrally injection molded in the adjusting hole, the sealing is stable, the water inlet spring 171 contacts with the inner side of the elastic sealing plate 32, threads are provided on the inner wall of the adjusting hole, an adjusting screw 33 is connected to one end of the adjusting hole near the outside, the adjusting screw 33 contacts with the outer side of the elastic sealing plate 32, and the elastic force of the water inlet spring 171 can be adjusted by screwing the adjusting screw 33, so that the operation is convenient.

The operation principle of the diaphragm pump in this embodiment is identical to that of the first embodiment, and will not be described here again.

The diaphragm pump of this preferred embodiment is through setting up backward flow chamber, sealing washer and elastic mechanism, backward flow chamber and inlet channel and with the outlet channel intercommunication, elastic mechanism is with sealing washer elasticity pressure-fastening in backward flow intracavity for sealing washer elasticity separation inlet channel and outlet channel between the intercommunication, the strong driving force of motor can guarantee sufficient outlet pressure, and when outlet channel's operating pressure is too big, outlet channel's pressure just can push away sealing washer, makes unnecessary fluid enter into inlet channel through backward flow chamber in, forms the backward flow protection, thereby guarantees to spray the accurate stability of pressure.

In summary, although the present invention has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention is defined by the appended claims.

Claims

1. The injection pressure adjusting mechanism is characterized in that the injection pressure adjusting mechanism is arranged on a pump body, end covers are arranged on two sides of the pump body, an isolation cavity is arranged between the end covers and a diaphragm, a water inlet channel and a water outlet channel are respectively arranged on the other two sides of the pump body, the isolation cavity is communicated with the water inlet channel through a water inlet through hole, a water inlet rubber head is arranged in the water inlet through hole through a water inlet spring elastic barrier, and a water outlet rubber head is arranged in the water outlet through hole through a water outlet spring elastic barrier;

2. The injection pressure adjusting mechanism according to claim 1, wherein the adjusting assembly comprises a fixing portion, a fixing plate and a movable plate, wherein two fixing plates are respectively connected to two sides of the fixing portion, the two fixing plates are located on the same plane, a connecting column is arranged on the fixing plate, and a plurality of movable plates are detachably connected with the connecting column, so that different numbers of movable plates can be adjusted to one fixing plate;

3. The injection pressure adjusting mechanism according to claim 2, wherein magnetic attraction portions for mutually magnetically attracting and fixing are provided on the first fixed plate, the second fixed plate, and the movable plate, and the magnetic attraction portions are of an annular structure.

4. The injection pressure adjusting mechanism according to claim 2, wherein two ends of the fixing part are provided with sliding blocks, the inner wall of the water outlet channel is provided with sliding grooves matched with the sliding blocks, and one end, close to the clamping block, of each sliding groove is communicated with a clamping groove for being clamped with the sliding blocks;

5. The injection pressure adjusting mechanism according to claim 4, wherein an adjusting hole is formed in the end cover at a position opposite to the water inlet spring, an elastic sealing piece is integrally injection-molded in the adjusting hole, the water inlet spring is in contact with the inner side of the elastic sealing piece, threads are formed on the inner wall of the adjusting hole, an adjusting screw is connected to one end, close to the outside, of the adjusting hole, and the adjusting screw is in contact with the outer side of the elastic sealing piece so as to be used for extrusion-adjusting the water inlet spring.

6. A diaphragm pump, characterized in that the injection pressure adjusting mechanism of any one of claims 1-5 is used, and further comprises a motor, the pump body, an eccentric wheel, a driving piece, the diaphragm, the water inlet rubber head, the water inlet spring, the water outlet rubber head, the water outlet spring and a bearing;

7. The diaphragm pump of claim 6, wherein a bracket is connected to a side of the motor where the output shaft is located, and both ends of the bracket extend to protrude from a side of the motor so as to facilitate connection of the bracket to the pump body.

8. The diaphragm pump of claim 6 wherein the outside of the inlet and outlet channels are provided with threads for connection to external piping.

9. The diaphragm pump of claim 6 wherein the eccentric is of powder metallurgy to avoid high temperature distortion due to friction.

10. The diaphragm pump of claim 8 further comprising a resilient mechanism comprising a top cap, a first spring, a spring seat, a spring pad, and a first screw member and a sealing gasket;