CN218598956U

CN218598956U - Durable foot valve

Info

Publication number: CN218598956U
Application number: CN202222771009.5U
Authority: CN
Inventors: 金龙; 李剑聪
Original assignee: Foshan Cingol Medical Instrument Co ltd
Current assignee: Foshan Cingol Medical Instrument Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-10
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to the field of foot valves, in particular to a durable foot valve, which comprises a valve body, wherein the valve body is provided with a hollow cavity, the valve body is provided with at least two plug-in mouths communicated with the hollow cavity, a valve core is arranged in the hollow cavity, the valve core slides in the hollow cavity, and a sealing element positioned between the valve core and the valve body is sleeved on the periphery of the valve core; still include first uide bushing and second uide bushing, the fixed end that sets up at cavity in first uide bushing, the front end of valve body is provided with the opening, the fixed front end or the opening that sets up at cavity in the second uide bushing, and first uide bushing, the second uide bushing all with case sliding connection, the axis that makes the case keeps as far as possible to lose with the axis coincidence of valve body, with the skew of the axis of reduction case for the axis of valve body, avoid the sealing member to be extrudeed by the case in the cavity, the atress is even when making sealing member reciprocating motion, difficult wearing and tearing.

Description

Durable foot valve

Technical Field

The utility model relates to a foot valve trade field, in particular to durable foot valve.

Background

The foot valve is a reversing valve controlled by foot, the function of the valve can be subdivided into two-position three-way and two-position five-way, at present, the foot valve can be applied to a plurality of industry fields, particularly to equipment for dental treatment, the foot valve can be arranged for controlling liquid such as air injection or water, and the operation of personnel is facilitated.

The existing foot valve is mostly arranged into a top treading structure, the rebound of the pedal on the structure needs to overcome the gravity factor, the requirement on the elasticity of an elastic piece is larger, and the foot valve is easy to damage after long-term use; to the pedal valve of structure is trampled to side, when trampling, because the pedal is not the motion to the right side with parallel, but anticlockwise rotation, can lift the case up, again to the right side push valve core.

If a novel foot valve of present patent number CN207569313U, adopt the form that the side was trampled, including the running-board, the ejector pin, the valve body, the case is reciprocating motion in the valve body and realizes the control to the switch, step on the running-board after the running-board, anticlockwise rotation pushes away the case through the ejector pin and moves to the valve body internal motion, at this in-process, the ejector pin is along with running-board anticlockwise motion, the case slides after receiving ascending thrust this moment, the sealing member of foot valve the inside is pushed after the part receives the extrusion, the wearing and tearing are changeed to the sealing member.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a durable foot valve which makes the sealing element not easy to wear.

The utility model discloses the technical scheme who adopts does: a durable foot valve comprises a valve body, wherein the valve body is provided with a hollow cavity, at least two inserting nozzles communicated with the hollow cavity are arranged on the valve body, a valve core is arranged in the hollow cavity, the valve core slides in the hollow cavity, and a sealing element positioned between the valve core and the valve body is sleeved on the periphery of the valve core;

the valve body is characterized by further comprising a first guide sleeve and a second guide sleeve, the first guide sleeve is fixedly arranged at the tail end of the hollow cavity, an opening is formed in the front end of the valve body, the second guide sleeve is fixedly arranged at the front end or the opening of the hollow cavity, and the first guide sleeve and the second guide sleeve are both in sliding connection with the valve core, so that the central axis of the valve core is kept to coincide with the central axis of the valve body as much as possible.

Through adopting above-mentioned technical scheme, reduce the skew of the axis of case for the axis of valve body, avoid the sealing member to be extruded by the case in cavity, atress is even when making sealing member reciprocating motion, difficult wearing and tearing.

Preferably, an elastic part is arranged in the hollow cavity and abutted between the inner arm of the hollow cavity and the valve core, and the elastic part is positioned in the first guide sleeve and stretches in the first guide sleeve.

By adopting the technical scheme, rebound of the valve core after being extruded is realized, further, the valve core reciprocates in the hollow cavity, and the switch of the foot valve is controlled.

Preferably, the valve core comprises a control section for controlling whether the two insertion nozzles are communicated or not and an extension section for operating by personnel, the control section is positioned in the hollow cavity, and the extension section is positioned at one end, facing the opening of the hollow cavity, of the control section and extends along the opening in the direction away from the valve body.

Through adopting above-mentioned technical scheme, guarantee this foot valve's integrality and practicality, realize the control to this foot valve switch.

Preferably, the control section of case is provided with the undergauge portion towards elastic component one end, and undergauge portion diameter is less than the control section diameter, and elastic component block and cup joint in undergauge portion outer wall.

By adopting the technical scheme, the elastic piece is fixed with the valve core through the reducing part, and the stability of connection between the elastic piece and the valve core is ensured.

Preferably, the valve core is provided with at least two sealing pieces, one of the sealing pieces moves along with the valve core in the hollow cavity to control whether the two nozzles are communicated, and the other sealing piece moves along with the valve core to always keep the sealing at the opening.

Through adopting above-mentioned technical scheme, guarantee this foot valve's leakproofness to two sealing members and case linkage, it is further, the position setting of two sealing members both guaranteed this foot valve's on-off control, can avoid liquid or gas leakage in this foot valve simultaneously.

Preferably, the sealing element is provided with an elastic annular structure sealing element, and the thickness of the sealing element is larger than the distance between the outer wall of the valve core and the inner wall of the hollow cavity.

Through adopting above-mentioned technical scheme, the sealing member compresses to the clearance between well cavity and the case under the elasticity effect, guarantees this foot valve's leakproofness, also can avoid this foot valve interior liquid to leak simultaneously.

Preferably, the end, deviating from the control section, of the extension section on the valve core is provided with a mounting frame, the mounting frame is provided with a rotating shaft, the rotating shaft is hinged with a rotatable pedal, and the pedal can support the end, deviating from the valve body, of the extension section of the valve core.

Through adopting above-mentioned technical scheme, guarantee this foot valve's practicality, through the footboard control case on the mounting bracket withdraw to in the valve body or kick-back, further, control opening or closing of this foot valve.

Preferably, the valve body comprises an installation part and top covers installed at two ends of the installation part, and the top covers are detachably connected with the installation part.

By adopting the technical scheme, each part in the valve body is convenient to disassemble and assemble, and the use is convenient.

Preferably, the second guide sleeve is mounted on the top cover facing one side of the valve core, and a gap is formed between one end, close to the control section, of the extending section on the valve core and the mounting part on the valve body.

Through adopting above-mentioned technical scheme, guarantee that the case is gliding smooth and easy in the valve body, reduce the case simultaneously and be pressed back the in-process and receive ascending thrust and extrusion.

To sum up, the utility model discloses following technological effect has:

the deviation of the central axis of the valve core relative to the central axis of the valve body is reduced, the sealing element is prevented from being extruded by the valve core in the hollow cavity, and the sealing element is stressed uniformly and is not easy to wear during reciprocating motion.

Drawings

Fig. 1 is a schematic view of a durable foot valve according to the present invention;

fig. 2 is a schematic view showing a structure of a durable foot valve according to the present invention after a pedal is rotated.

In the figure: 1. a valve body; 2. a hollow cavity; 3. inserting a nozzle; 4. a valve core; 5. an installation part; 6. a top cover; 7. A mounting frame; 8. a rotating shaft; 9. a pedal; 10. a control section; 11. an extension section; 12. a first guide sleeve; 13. A second guide sleeve; 14. an opening; 15. an elastic member; 16. a diameter reducing portion; 17. and a seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a durable foot valve, which includes a valve body 1, wherein the valve body 1 is provided with a hollow cavity 2, the valve body 1 is provided with at least two insertion nozzles 3 communicated with the hollow cavity 2, a valve core 4 is arranged in the hollow cavity 2, the valve core 4 slides in the hollow cavity 2, and a sealing member 17 positioned between the valve core 4 and the valve body 1 is sleeved on the periphery of the valve core 4; still include first uide bushing 12 and second uide bushing 13, first uide bushing 12 is fixed to be set up at the end of well cavity 2, the front end of valve body 1 is provided with opening 14, the fixed front end or the opening 14 that sets up at well cavity 2 of second uide bushing, and first uide bushing 12, second uide bushing 13 all with case 4 sliding connection, the axis that makes case 4 keeps as far as possible to coincide with the axis of valve body 1, with the skew of the axis that reduces the case for the axis of valve body, avoid the sealing member to be extrudeed by the case in the cavity, atress is even when making sealing member reciprocating motion, difficult wearing and tearing.

In this embodiment, the valve core 4 slides in the hollow cavity 2 to control whether the two nozzles 3 are communicated, so as to control the pedal valve.

As shown in the figure, valve body 1 includes installation department 5, installs in the top cap 6 at 5 both ends of installation department, can dismantle between top cap 6 and the installation department 5 and be connected, in other embodiments, can set up top cap 6 and installation department 5 to multiple modes such as gomphosis, block, grafting, threaded connection and realize that it can dismantle and be connected, makes things convenient for each spare part dismouting in the valve body 1, facilitates the use.

It should be noted that the two insertion nozzles 3 are set to have one air inlet and one air outlet, or one liquid inlet and one liquid outlet, and the control of the liquid outlet end or the air outlet end is realized by controlling whether the two insertion nozzles 3 are communicated, and in other embodiments, the two insertion nozzles can be set to be three-way or four-way, and the like, and are applicable to various devices.

In this embodiment, still include mounting bracket 7, be provided with pivot 8 on the mounting bracket 7, it has rotatable footboard 9 to articulate in the pivot 8, footboard 9 can support the one end that deviates from valve body 1 of the extension section 11 (see below) of case 4, in this embodiment, footboard 9 sets up to the L font, one side is used for personnel to trample, the one end butt that deviates from valve body 1 of the extension section 11 of opposite side and case 4, through footboard 9 control case 4 on the mounting bracket 7 retract to in the valve body 1 or kick-back, control opening or closing of this foot valve.

As shown in the figure, case 4 is including the control section 10 that is used for controlling whether two spigot 3 communicate, an extension section 11 for personnel's operation, control section 10 is located well cavity 2, extension section 11 is located control section 10 and extends along opening 14 one end of well cavity 2 and the direction of following opening 14 and keeping away from valve body 1 in the past, extension section 11 receives the extrusion and drives control section 10 and slide to valve body 1, make two spigot 3 communicate, and then, make out the liquid end, give vent to anger end outflow liquid or gas, in this embodiment, extension section 11 diameter is less than control section 10 diameter, can prevent that case 4 from breaking away from valve body 1 at the slip in-process, and can make the slip of extension section 11 more smooth.

It should be noted that, under the action of the pedal 9, when the extending section 11 of the valve element 4 is pressed, the extending section 11 is subjected to upward thrust and pressing, the central axis of the valve element 4 deflects relative to the central axis of the valve body 1, and after the deflection, the sealing member 17 is pressed between the valve element 4 and the valve body 1 by a large local pressure and a small local pressure, so that the pressure is not uniform, and the position with the large pressure is easily worn. Therefore, a first guide sleeve 12 and a second guide sleeve 13 are fixedly arranged at two ends in the hollow cavity 2 respectively, the first guide sleeve 12 and the second guide sleeve 13 are connected with the valve core 4 in a sliding mode, the deflection degree of the central axis of the valve core 4 in the pressing-back process is reduced, the central axis of the valve core 4 is kept coincident with the central axis of the valve body 1 as far as possible, the sealing element 17 is located at an ideal position, and all parts of the sealing element 17 are stressed uniformly and are not prone to abrasion.

In order to reduce the deflection of the valve core 4 in the process of being pressed back, the valve core 4 slides at the opening 14, the first guide sleeve 12 is installed at one end, away from the opening 14, in the hollow cavity 2, the second guide sleeve 13 is installed on the top cover 6 facing one side of the valve core 4, a gap is formed between one end, close to the control section 10, of the extension section 11 on the valve core 4 and the installation part 5 on the valve body 1, so that the smooth sliding of the valve core 4 in the valve body 1 is ensured, meanwhile, the central axis of the valve core 4 is kept to be coincident with the central axis of the valve body 1 as much as possible when the valve core 4 reciprocates, the sealing part 17 is not easy to wear, it should be noted that when the valve core 4 reciprocates, one end, facing the first guide sleeve 12, of the valve core 4 is always in the first guide sleeve 12, the length of the first guide sleeve 12 is greater than the reciprocating stroke distance of the valve core 4, and the valve core 4 is prevented from deviating from the first guide sleeve 12 in the hollow cavity 2.

As shown in the figure, the elastic member 15 is arranged in the hollow cavity 2 and abutted between the inner wall of the hollow cavity 2 and the valve core 4, the elastic member 15 is arranged in the first guide sleeve 12 and stretches in the first guide sleeve 12, the valve core 4 rebounds under the action of the elastic member 15 after being extruded, the valve core 4 reciprocates in the hollow cavity 2 and controls the switch of the foot valve, in this embodiment, the elastic member 15 is a spring and can be compressed and have elastic force, and the valve core 4 rebounds.

In this embodiment, a diameter-reducing portion 16 is disposed at one end of the control section 10 of the valve core 4 facing the elastic member 15, the diameter of the diameter-reducing portion 16 is smaller than that of the control section 10, the elastic member 15 is clamped and sleeved on the outer wall of the diameter-reducing portion 16, the elastic member 15 is fixed to the valve core 4 through the diameter-reducing portion 16, stability of connection between the elastic member 15 and the valve core 4 is ensured, it should be noted that a step surface is formed between the diameter-reducing portion 16 and the control section 10 of the valve core 4 due to a diameter difference, one end of the elastic member 15 facing the diameter-reducing portion 16 abuts against the step surface, stability of connection between the elastic member 15 and the valve core 4 is ensured, and meanwhile, the valve core 4 is prevented from being popped out of the first guide sleeve 12 by too large elastic force to separate from the elastic member 15.

In order to ensure the sealing performance of the foot valve and realize the control of whether the two spigot joints 3 are communicated or not, at least two sealing pieces 17 are arranged on the valve core 4, one sealing piece 17 moves in the hollow cavity 2 along with the valve core 4 to control whether the two spigot joints are communicated or not, the other sealing piece 17 moves along with the valve core 4 to always keep the sealing of the opening 14, the two sealing pieces 17 are linked with the valve core 4, and further, the position arrangement of the two sealing pieces 17 not only ensures the on-off control of the foot valve, but also can avoid the leakage of liquid or gas in the foot valve.

In this embodiment, two sealing members 17 are disposed on the valve core 4, the two sealing members 17 are both mounted on the control section 10 of the valve core 4, one of the sealing members 17 is located between the opening 14 and the spigot 3 near one side of the opening 14, and as the valve core 4 slides in the hollow cavity 2, the sealing member 17 is always located between the opening 14 and the spigot 3 near one side of the opening 14 to ensure the sealing of the opening 14, the other sealing member 17 controls whether the two spigots are communicated with each other or not along with the movement of the valve core 4 in the hollow cavity 2, when the valve core 4 is squeezed, the sealing member 17 is located on the side of the spigot 3 away from the opening 14, where the two spigots 3 are communicated with each other, and can be used for liquid or gas to flow out, after the restriction on the valve core 4 is released, the valve core 4 rebounds under the action of the elastic member 15, and at this time, the sealing member 17 is located between the two spigots 3 to make the two spigots 3 not communicated, where the liquid or gas stops flowing out.

It should be noted that, the sealing member 17 is set to be the sealing member 17 with an elastic annular structure, and the thickness of the sealing member 17 is greater than the distance between the outer wall of the valve element 4 and the inner wall of the hollow cavity 2, and the sealing member 17 is compressed to fill the gap between the hollow cavity 2 and the valve element 4 under the action of elastic force, so as to ensure the sealing performance of the foot valve and avoid the leakage of liquid in the foot valve.

The utility model discloses a theory of operation: two sealing parts 17 are arranged on the control section 10 of the valve core 4, wherein one sealing part 17 is positioned between the opening 14 and the plug nozzle 3 close to one side of the opening 14, and along with the sliding of the valve core 4 in the hollow cavity 2, the sealing part 17 is always positioned between the opening 14 and the plug nozzle 3 close to one side of the opening 14 to ensure the sealing of the opening 14, the other sealing part 17 controls whether the two plug nozzles are communicated along with the movement of the valve core 4 in the hollow cavity 2, when the valve core 4 is extruded, the sealing part 17 is positioned at one side of the plug nozzle 3 departing from the opening 14, and the two plug nozzles 3 are communicated at the moment and can be used for liquid or gas to flow out, after the limitation to the valve core 4 is released, case 4 kick-backs under elastic component 15's effect, at this moment, this sealing member 17 is located between two spigot 3, make two spigot 3 not communicate, liquid or gaseous stop flow this moment, the extrusion of case 4 is realized through footboard 9 rotation on mounting bracket 7, first uide bushing 12 is installed to the one end that deviates from opening 14 in well cavity 2, opening 14 department is provided with second uide bushing 13, can reduce the degree of deflection of case 4 by being pressed back its axis of in-process, in order to avoid sealing member 17 to receive the ascending thrust of case 4 to be extruded in well cavity 2, furthermore, the atress is even when making sealing member 17 reciprocating motion, difficult wearing and tearing.

Finally, it should be noted that the above mentioned embodiments are only preferred examples of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or some technical features may be substituted equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A durable foot valve comprises a valve body (1) and is characterized in that the valve body (1) is provided with a hollow cavity (2), at least two inserting nozzles (3) communicated with the hollow cavity (2) are arranged on the valve body (1), a valve core (4) is arranged in the hollow cavity (2), the valve core (4) slides in the hollow cavity (2), and a sealing element (17) positioned between the valve core (4) and the valve body (1) is sleeved on the periphery of the valve core (4);

still include first uide bushing (12) and second uide bushing (13), first uide bushing (12) are fixed to be set up at the end in cavity (2), the front end of valve body (1) is provided with opening (14), the fixed front end or the opening (14) that set up in cavity (2) of second uide bushing, and first uide bushing (12), second uide bushing (13) all with case (4) sliding connection, make the axis of case (4) keep as far as possible with the axis coincidence of valve body (1).

2. A durable foot valve according to claim 1, characterized in that an elastic member (15) is arranged in the hollow chamber (2) abutting between the inner arm of the hollow chamber (2) and the spool (4), and that the elastic member (15) is arranged in the first guide sleeve (12) and extends and retracts in the first guide sleeve (12).

3. A durable foot valve according to claim 2, characterized in that the valve member (4) comprises a control section (10) for controlling whether the two nozzles (3) are connected or not, an extension section (11) for human operation, the control section (10) is located in the hollow chamber (2), and the extension section (11) is located at an end of the control section (10) facing the opening (14) of the hollow chamber (2) and extends along the opening (14) in a direction away from the valve body (1).

4. A durable foot valve according to claim 3, characterized in that the control section (10) of the valve cartridge (4) is provided with a reduced diameter portion (16) towards the end of the elastic member (15), the diameter of the reduced diameter portion (16) being smaller than the diameter of the control section (10), and the elastic member (15) is engaged with and sleeved on the outer wall of the reduced diameter portion (16).

5. A durable foot valve according to claim 1, characterized in that the valve core (4) is provided with at least two sealing members (17), wherein one sealing member (17) controls whether the two nozzles are communicated or not as the valve core (4) moves in the hollow cavity (2), and the other sealing member (17) keeps the sealing at the opening (14) all the time as the valve core (4) moves.

6. A durable foot valve according to claim 5, characterized in that the sealing member (17) is provided as a sealing member (17) with a resilient annular structure, and the thickness of the sealing member (17) is larger than the distance from the outer wall of the spool (4) to the inner wall of the hollow chamber (2).

7. A durable foot valve according to claim 1, characterized in that a mounting frame (7) is arranged at the end of the extension section (11) of the valve element (4) facing away from the control section (10), a rotating shaft (8) is arranged on the mounting frame (7), a rotatable pedal (9) is hinged on the rotating shaft (8), and the pedal (9) can abut against the end of the extension section (11) of the valve element (4) facing away from the valve body (1).

8. A durable foot valve according to claim 1, characterized in that the valve body (1) comprises a mounting portion (5), a top cover (6) being mounted at both ends of the mounting portion (5), the top cover (6) being detachably connected to the mounting portion (5).

9. A durable foot valve according to claim 8, characterized in that the second guide sleeve (13) is mounted on the cover (6) on the side facing the valve member (4), and that a gap is provided between the end of the extension (11) of the valve member (4) adjacent to the control section (10) and the mounting (5) on the valve body (1).