CN209977355U - Check gate valve for explosion-proof meter - Google Patents

Abstract

The utility model provides an explosion-proof table non return gate valve belongs to control flap's technical field. An anti-explosion meter check gate valve comprises a valve body, a valve cover, a gate valve assembly and a check valve assembly; the utility model discloses a gate valve subassembly and check valve subassembly are the integral type and set up in the valve body for the valve has possessed the function of two kinds of valve bodies of gate valve and check valve, has avoided the problem that the tie point is many when setting up check valve and gate valve separately, has reduced the leakage risk, and the safety guarantee nature is higher; in addition, set up the first pressure release hole and the second pressure release hole that can communicate on the check valve clack subassembly in the check valve subassembly to break off through cock body and pressure release spring control first pressure release hole and the break-make of second pressure release hole under normal conditions and guarantee the non return effect, and communicate under the abnormal conditions such as superpressure and realize automatic pressure release, prevented the problem that the appearance explodes the table, protected the supply channel, avoided property loss, thereby the security of water has been improved.

Description

Check gate valve for explosion-proof meter

Technical Field

The utility model relates to a control flap's technical field specifically relates to an explosion-proof table non return gate valve.

Background

Before the tap water at the water supply end flows to the water using appliance at the user end through the water meter, a meter front valve is generally installed in front of the water meter in order to prevent the medium from being guided, and the meter front valve generally comprises a check valve and a gate valve at present. When the user does not have the water demand, the water use utensil of valve, water gauge and user side forms a temporary and local sealed space, if external conditions changes, when the condition takes place such as the pipeline of user side vibrates, ambient temperature is unusual, causes the pressure rise in the above-mentioned temporary local sealed space that forms easily, when pressure rise to be greater than the highest service pressure of water gauge, can cause the problem that the water gauge explodes the table, damages water supply pipeline equipment, has caused loss of property, has certain safety risk.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, it aims at providing an explosion-proof table check gate valve now, be the integral type setting with check valve subassembly and gate valve subassembly, the tie point has not only been reduced, reduce the leakage risk, improve safety guarantee, be provided with the pressure release structure in check valve subassembly simultaneously, the water supply demand of valve under the normal condition has not only been guaranteed, also can guarantee simultaneously to realize automatic pressure release under the abnormal conditions such as superpressure, prevent the emergence that the water gauge explodes the table scheduling problem, the water supply pipeline has been protected, property loss has been avoided, the security of water has been improved.

The specific technical scheme is as follows:

the utility model provides an explosion-proof table check gate valve, includes valve body and valve gap, and the valve body is provided with the runner, and the runner includes entry end and exit end, and the axial that just is located between entry end and the exit end and the perpendicular to runner on the valve body is provided with the valve gap end, and the valve gap connects soon to serve in the valve gap, has such characteristic, still includes: a gate valve assembly and a check valve assembly, wherein,

the gate valve assembly comprises a valve rod, a gate plate and a gland, the valve rod is arranged in the valve cover, the gate plate is arranged in the flow passage, the lower end of the valve rod extends into the flow passage and is connected with the gate plate, and meanwhile, the gland is in threaded connection with the valve cover and is positioned on one side, away from the gate plate, of the valve rod;

the check valve subassembly includes check valve seat, check valve gap and check valve clack subassembly, and check valve lid spiro union is served in the export, and check valve seat spiro union just is located between flashboard and the check valve gap in the runner, and simultaneously, check valve seat and check valve are located to check valve clack subassembly cover and can be along the axial of runner and be reciprocating motion to, set up the first pressure release hole and the second pressure release hole that can communicate each other on the check valve clack subassembly.

The check gate valve for the anti-explosion meter comprises a check valve clack assembly, a guide rod, a plug body, a check spring and a pressure relief spring, wherein a first pressure relief hole is formed in one end, close to a check valve cover, of the check valve clack assembly, a limiting hole communicated with the first pressure relief hole is formed in one end, close to a check valve seat, of the check valve clack assembly, the diameter of the limiting hole is larger than that of the first pressure relief hole, one end of the guide rod is inserted into the limiting hole and fixedly connected with the limiting hole, the plug body and the pressure relief spring are arranged in the limiting hole, the plug body is arranged in the limiting hole and abutted against the first pressure relief hole, the pressure relief spring is arranged between the plug body and the guide rod, two ends of the pressure relief spring are respectively abutted against the plug body and the guide rod, a second pressure relief hole penetrating through the guide rod is formed in the guide rod, the second pressure relief hole is communicated with the limiting hole, one end of the guide rod, which is deviated from the valve clack main body, is slidably arranged on the check valve seat, and a check spring is arranged between the valve clack main body and the check valve seat.

The utility model provides an foretell explosion-proof table non return gate valve, wherein, a cross sectional shape of valve clack main part is "T" font setting, including direction handle and non return piece, the non return piece is the disc setting, and the direction handle sets up perpendicularly on a terminal surface of non return piece, and first pressure release hole is seted up on the direction handle and is set up along the length direction of direction handle, and spacing hole is seted up on the non return piece to, seted up the gasket mounting groove on the lateral wall of the border department of non return piece, and the gasket mounting groove is embedded to be equipped with seal gasket.

The anti-explosion meter check gate valve is characterized in that a spring limiting block is arranged on the outer wall of the guide handle in a protruding mode, the check spring is sleeved on the guide handle, one end of the check spring is fixed on the spring limiting block, and the other end of the check spring abuts against the check valve cover.

The anti-explosion meter check gate valve is characterized in that the joint of the limiting hole and the first pressure relief hole is a conical surface, and an internal thread is arranged at the joint of the limiting hole and the guide rod.

The check gate valve for the anti-explosion meter is characterized in that the guide rod is inserted into one end of the limiting hole and provided with an external thread matched with the internal thread of the limiting hole.

The utility model provides an explosion-proof table check gate valve, wherein, first guiding hole has been seted up at the middle part of check valve lid, and the side that the check valve covered and was located first guiding hole has seted up a plurality of first through-flow holes, and the direction handle of valve clack main part is slided and is located first guiding hole.

The second guide hole is formed in the middle of the check valve seat, the side, located in the second guide hole, of the check valve seat is provided with the second through holes, the guide rod deviates from the end, inserted in the limiting hole, of the guide rod and is slidably arranged in the second guide hole, and the second through holes are located in the coverage range of the check block of the valve clack body.

Foretell anti-explosion table check gate valve, wherein, the cock body is globular to be set up.

The positive effects of the technical scheme are as follows:

according to the anti-explosion meter check gate valve, the check valve component and the gate valve component are integrally arranged, so that the problem that a plurality of connecting points are needed when the check valve and the gate valve are separately arranged is solved, the leakage risk is effectively reduced, and the safety guarantee is improved; and, set up first pressure release hole and the second pressure release hole that can communicate each other on the check valve clack subassembly in the check valve subassembly, simultaneously, be provided with cock body and pressure release spring between first pressure release hole and second pressure release hole, and under normal condition, the cock body blocks the intercommunication of first pressure release hole and second pressure release hole, and under the abnormal conditions such as superpressure, the cock body is opened, first pressure release hole and second pressure release hole intercommunication, realize automatic pressure release operation, thereby make the front valve of the table, the pressure in the temporary and the locally sealed space of water apparatus formation of water gauge and user side reduces to normal level, the problem of table explosion has been prevented to appear, the water supply pipe has been protected, property loss has been avoided, thereby the security of water has been improved.

Drawings

FIG. 1 is a structural diagram of an embodiment of a check gate valve of an explosion-proof meter according to the present invention;

FIG. 2 is a schematic view of a check valve flap assembly according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a valve flap body according to a preferred embodiment of the present invention;

fig. 4 is a structural diagram of a guide bar according to a preferred embodiment of the present invention.

In the drawings: 1. a valve body; 11. a flow channel; 12. a valve cap end; 111. an inlet end; 112. an outlet end; 2. a valve cover; 3. a gate valve assembly; 31. a valve stem; 32. a shutter plate; 33. a gland; 4. a check valve assembly; 41. a check valve seat; 42. a check valve cover; 43. a check valve flap assembly; 411. a second guide hole; 412. a second flow through hole; 421. a first guide hole; 422. a first flow through hole; 431. a valve flap body; 432. a guide bar; 433. A plug body; 434. a check spring; 435. a pressure relief spring; 436. sealing gaskets; 4311. a guide handle; 4312. a check block; 4313. a spring stopper; 4314. a first pressure relief vent; 4315. a limiting hole; 4316. a gasket mounting groove; 4321. a second pressure relief vent.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 4, but the following contents are not intended to limit the present invention.

Fig. 1 is a structural diagram of an embodiment of the check gate valve for the anti-explosion meter of the present invention. As shown in fig. 1, the check gate valve of the anti-explosion meter provided by the present embodiment includes: the valve comprises a valve body 1 and a valve cover 2, wherein the valve body 1 is provided with a flow passage 11, the flow passage 11 comprises an inlet end 111 and an outlet end 112, a valve cover end 12 is arranged on the valve body 1 and is positioned between the inlet end 111 and the outlet end 112 and is perpendicular to the axial direction of the flow passage 11, the valve cover 2 is screwed on the valve cover end 12, and fluid flows to the outlet end 112 from the inlet end 111 of the valve body 1 through the flow passage 11. In addition, a gate valve assembly 3 and a check valve assembly 4 are further provided in the valve body 1, the on/off of the fluid is controlled by the gate valve assembly 3, and the backflow of the fluid is prevented by the check valve assembly 4, so that the function of a front meter valve is embodied.

Specifically, set up gate valve subassembly 3 in valve body 1 again including valve rod 31, flashboard 32 and gland 33, valve rod 31 sets up in valve gap 2, valve rod 31 sets up along the direction of arranging of valve gap end 12, and flashboard 32 sets up in runner 11, stretch into runner 11 with the lower extreme of valve rod 31 simultaneously and be connected with flashboard 32, action through valve rod 31 control flashboard 32, in addition, on valve gap 2 and be located one side that valve rod 31 deviates from flashboard 32 and be provided with gland 33, and gland 33 and valve gap 2 spiro union, realized the closure in valve gap 2 space to valve rod 31 upper end, the structure is more reasonable.

Specifically, the check valve assembly 4 disposed within the valve body 1 is positioned in the flow passage 11 on a side thereof adjacent to the outlet end 112 such that the gate valve assembly 3 is disposed between the check valve assembly 4 and the inlet end 111. In addition, the check valve assembly 4 further includes a check valve seat 41, a check valve cover 422 and a check valve flap assembly 43, the check valve cover 422 is screwed on the outlet end 112, the check valve seat 41 is screwed in the flow passage 11 and is located between the gate plate 32 and the check valve cover 422, meanwhile, the check valve flap assembly 43 is sleeved on the check valve seat 41 and the check valve cover 422 and can reciprocate along the axial direction of the flow passage 11, the opening and closing of the flow passage 11 are realized through the movement of the check valve flap assembly 43, so that the purpose of preventing the fluid from flowing back is achieved, in addition, a first pressure relief hole 4314 and a second pressure relief hole 4321 which can be mutually communicated are arranged on the check valve flap assembly 43, the first pressure relief hole 4314 and the second pressure relief hole 4321 can be communicated to relieve pressure under the abnormal conditions of overpressure and the like, so that the problems of meter explosion and the like are prevented, the.

Fig. 2 is a structural diagram of a check valve flap assembly according to a preferred embodiment of the present invention. As shown in fig. 1 and 2, the check valve flap assembly 43 includes a flap main body 431, a guide rod 432, a plug body 433, a check spring 434 and a pressure relief spring 435, wherein a first pressure relief hole 4314 is formed at one end of the flap main body 431 near the check valve cover 422, a limit hole 4315 communicated with the first pressure relief hole 4314 is formed at one end of the flap main body 431 near the check valve seat 41, the diameter of the limit hole 4315 is larger than that of the first pressure relief hole 4314, a mounting space is provided for the plug body 433 and the pressure relief spring 435, in addition, one end of the guide rod 432 is inserted into the limit hole 4315 and fixedly connected, the plug body 433 and the pressure relief spring 435 are both disposed in the limit hole 4315, and the plug body 433 is disposed in the limit hole 4315 and abuts against the first pressure relief hole 4314, control of the first pressure relief hole 4314 can be realized by the plug body 433 being away from or close to the first pressure relief hole 4314, and the pressure relief spring 435 is disposed between the plug body 433 and the guide rod 432, and both ends of which abut, the plug body 433 is enabled to have a certain initial pressure, so that the first pressure relief hole 4314 is sealed under a normal condition, the fluid is prevented from flowing back from the first pressure relief hole 4314, the plug body 433 is forced to move to open the first pressure relief hole 4314 only under an overpressure condition, the pressure relief operation is realized, and the structure is more reasonable. And, set up the second pressure release hole 4321 that runs through in the guide bar 432, and second pressure release hole 4321 communicates with spacing hole 4315, not only provide through guide bar 432 for pressure release spring 435 and lean on the benchmark, can also provide the fluid passage simultaneously when the pressure release, simultaneously, the one end that valve clack main part 431 deviates from guide bar 432 is slided and is located on check valve cover 422, the one end that guide bar 432 deviates from valve clack main part 431 is slided and is located on check valve seat 41, guarantee the stability of check valve clack subassembly 43 motion, make the reliability of valve higher, and be provided with check spring 434 between valve clack main part 431 and the check valve seat 41, can realize closing of runner 11 when the user end does not have the user demand, prevent the backward flow of fluid.

Fig. 3 is a structural diagram of a valve flap main body according to a preferred embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, a cross section of the valve flap main body 431 of the check valve flap assembly 43 is in a "T" shape, the valve flap main body 431 further includes a guide handle 4311 and a check block 4312 connected to the guide handle 4311, the check block 4312 is in a disc shape, and the cross section of the check block 4312 is larger than that of the guide handle 4311, and the guide handle 4311 can abut against the check valve seat 41 and seal the check valve seat 41 during a movement process, thereby preventing a backflow of fluid. More specifically, the direction handle 4311 sets up perpendicularly on non return piece 4312's an terminal surface, the simultaneous movement of direction handle 4311 and non return piece 4312 has been realized, and, first pressure release hole 4314 sets up on direction handle 4311 and along the length direction setting of direction handle 4311, spacing hole 4315 sets up on non return piece 4312, and, gasket mounting groove 4316 has been seted up on the lateral wall of non return piece 4312's border department, and gasket mounting groove 4316 is embedded to be equipped with seal gasket 436, through seal gasket 436 further promote with the sealing performance between the non return disk seat 41, thereby prevent leakage scheduling problem, the safety guarantee group is higher.

More specifically, the outer wall of the guide handle 4311 is further provided with a spring limiting block 4313 in a protruding manner, the non-return spring 434 is sleeved on the guide handle 4311, one end of the non-return spring 434 is fixed on the spring limiting block 4313, the other end of the non-return spring 434 abuts against the non-return valve cover 422, and the non-return spring 434 stretches and retracts to drive the guide handle 4311 to move, so that the non-return block 4312 is driven to move away from or close to the non-return valve seat 41, and the non-return purpose is achieved.

More specifically, the valve flap main body 431 is provided with a conical surface at the joint of the limiting hole 4315 and the first pressure relief hole 4314, so that the contact surface with the plug body 433 is larger, the sealing performance is improved, and the check effect is ensured. In addition, an internal thread is arranged in the limiting hole 4315 and at the joint with the guide rod 432, so that the guide rod 432 and the valve flap main body 431 are more conveniently connected, and the product manufacturing efficiency is improved.

Fig. 4 is a structural diagram of a guide bar according to a preferred embodiment of the present invention. As shown in fig. 1, 2 and 4, the end of the guide rod 432 inserted into the limiting hole 4315 is provided with an external thread matching with the internal thread of the limiting hole 4315, so as to provide a structural basis for connection with the limiting hole 4315 on the valve flap main body 431, and the structure is more reasonable.

More specifically, a first guide hole 421 is formed in the middle of a check valve cover 422 screwed to the outlet end 112 of the flow passage 11 of the valve body 1, a plurality of first flow through holes 422 are formed in the check valve cover 422 and beside the first guide hole 421, a guide handle 4311 of the valve flap main body 431 is slidably arranged in the first guide hole 421, a guide is provided for the movement of the guide handle 4311 of the valve flap main body 431 through the first guide hole 421, the movement stability of the valve flap main body 431 is ensured, and the reliability of valve control is improved.

More specifically, set up the middle part of the check valve seat 41 in the runner 11 of valve body 1 and seted up second guiding hole 411, and the side that just is located second guiding hole 411 on the check valve seat 41 has seted up a plurality of second through-flow holes 412, and guide bar 432 deviates from to insert and locates in second guiding hole 411 that the one end of locating in spacing hole 4315 is smooth, make to provide the direction for guide bar 432's motion through second guiding hole 411, the stability of guide bar 432 motion has been guaranteed, the stability of check valve clack subassembly 43 motion has further been guaranteed, valve control's reliability has further been improved. Moreover, the second through holes 412 are all located in the coverage range of the check block 4312 of the valve flap main body 431, so that when the valve flap main body 431 is close to the check valve seat 41 under the action of the check spring 434 and is abutted against each other, the check block 4312 or the check block 4312 provided with the sealing gasket 436 can completely seal all the second through holes 412 on the check valve seat 41, the check purpose is achieved, and the structure is more reasonable.

In a preferred embodiment, the second guide hole 411 of the check valve seat 41 and the first guide hole 421 of the check valve cover 422 are coaxially arranged, and the second flow through hole 412 of the check valve seat 41 and the first flow through hole 422 of the check valve cover 422 are oppositely arranged, so that the maximum flow rate of the fluid passing through is ensured.

As a preferred embodiment, the first flow holes 422 are distributed around the first guiding hole 421 in an annular array, and the second flow holes 412 are distributed around the second guiding hole 411 in an annular array, so that the stress distribution of the structure is more uniform, and the structural strength is higher.

As a preferred embodiment, the plug body 433 is arranged in a spherical shape, so that the plug body 433 is better in contact with the first pressure relief hole 4314 in the limiting hole 4315, the sealing performance is further ensured, and the structure is more reasonable.

The check gate valve for the explosion-proof meter provided by the embodiment comprises a valve body 1, a valve cover 2, a gate valve assembly 3 and a check valve assembly 4; the gate valve assembly 3 and the check valve assembly 4 are integrally arranged in the valve body 1, so that the valve has the functions of a gate valve and a check valve, the problem that the number of connecting points is large when the check valve and the gate valve are separately arranged is solved, the leakage risk is reduced, and the safety guarantee is high; in addition, a first pressure relief hole 4314 and a second pressure relief hole 4321 which can be communicated are formed in the check valve clack component 43 in the check valve component 4, the on-off of the first pressure relief hole 4314 and the second pressure relief hole 4321 is controlled through the plug body 433 and the pressure relief spring 435, the check effect is guaranteed by disconnection under normal conditions, automatic pressure relief is realized by communication under abnormal conditions such as overpressure, the problem of meter explosion is prevented, a water supply pipeline is protected, property loss is avoided, and the safety of water use is improved.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims (9)

1. The utility model provides an explosion-proof table non return gate valve, valve body and valve gap, the valve body is provided with the runner, the runner includes entry end and exit end, just be located on the valve body the entry end with between the exit end and the perpendicular to the axial of runner is provided with the valve gap end, the valve gap connect soon in the valve gap is served, its characterized in that still includes: a gate valve assembly and a check valve assembly, wherein,

the gate valve assembly comprises a valve rod, a gate plate and a gland, the valve rod is arranged in the valve cover, the gate plate is arranged in the flow channel, the lower end of the valve rod extends into the flow channel to be connected with the gate plate, and meanwhile, the gland is in threaded connection with the valve cover and is positioned on one side, away from the gate plate, of the valve rod;

the check valve subassembly includes check valve seat, check valve gap and check valve clack subassembly, check valve cover spiro union in the export is served, check valve seat spiro union in the runner and be located the flashboard with between the check valve gap, simultaneously, check valve clack subassembly cover is located check valve seat with the check valve covers and can follow reciprocating motion is to the axial of runner, and, set up the first pressure release hole and the second pressure release hole that can communicate each other on the check valve clack subassembly.

2. The anti-explosion gauge check gate valve according to claim 1, wherein the check valve flap assembly comprises a valve flap main body, a guide rod, a plug body, a check spring and a pressure relief spring, the first pressure relief hole is formed at one end of the valve flap main body close to the check valve cover, a limiting hole communicated with the first pressure relief hole is formed at one end of the valve flap main body close to the check valve seat, the diameter of the limiting hole is larger than that of the first pressure relief hole, one end of the guide rod is inserted into the limiting hole and fixedly connected with the limiting hole, the plug body and the pressure relief spring are both arranged in the limiting hole, the plug body is positioned in the limiting hole and abutted against the first pressure relief hole, the pressure relief spring is positioned between the plug body and the guide rod, and two ends of the pressure relief spring are respectively abutted against the plug body and the guide rod, and, set up in the guide bar and run through the second pressure release hole, just second pressure release hole with spacing hole intercommunication, simultaneously, the valve clack main part deviates from the one end of guide bar is slided and is located the check valve is covered, the guide bar deviates from the one end of valve clack main part is slided and is located on the check valve seat, just the valve clack main part with be provided with between the check valve seat check spring.

3. The anti-explosion meter check gate valve according to claim 2, wherein a cross section of the valve flap main body is in a T-shaped arrangement and comprises a guide handle and a check block, the check block is in a disc shape, the guide handle is vertically arranged on one end face of the check block, the first pressure relief hole is formed in the guide handle and is arranged along the length direction of the guide handle, the limiting hole is formed in the check block, a gasket mounting groove is formed in a side wall of the edge of the check block, and a sealing gasket is embedded in the gasket mounting groove.

4. The anti-explosion watch check gate valve according to claim 3, wherein a spring limiting block is protrudingly arranged on the outer wall of the guide handle, the check spring is sleeved on the guide handle, one end of the check spring is fixed on the spring limiting block, and the other end of the check spring abuts against the check valve cover.

5. The anti-explosion meter check gate valve according to claim 2, wherein the connection between the limiting hole and the first pressure relief hole is a conical surface, and an internal thread is arranged in the limiting hole and at the connection with the guide rod.

6. The anti-explosion meter check gate valve according to claim 5, wherein an external thread matched with the internal thread of the limiting hole is arranged at one end of the guide rod inserted into the limiting hole.

7. The anti-explosion meter check gate valve of claim 3, wherein a first guide hole is formed in the middle of the check valve cover, a plurality of first flow through holes are formed in the check valve cover and located beside the first guide hole, and the guide handle of the valve flap main body is slidably disposed in the first guide hole.

8. The anti-explosion meter check gate valve according to claim 3, wherein a second guide hole is formed in the middle of the check valve seat, a plurality of second flow through holes are formed in the check valve seat and located beside the second guide hole, one end of the guide rod, which is deviated from the limiting hole, is slidably arranged in the second guide hole, and the plurality of second flow through holes are located in the coverage range of the check block of the valve clack body.

9. The explosion proof meter check gate valve of claim 2 wherein the plug body is spherically shaped.

Images