CN214579105U

CN214579105U - Meter front gate valve with non-return function

Info

Publication number: CN214579105U
Application number: CN202121080201.9U
Authority: CN
Inventors: 李昌浩; 林纪
Original assignee: Zhejiang Haoji Fluid Technology Co ltd
Current assignee: Zhejiang Haoji Fluid Technology Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-11-02
Anticipated expiration: 2031-05-20

Abstract

The utility model provides a gate valve before table with non return function belongs to valve body and makes technical field. The check valve clack of the gate valve before the meter solves the problems that the check valve clack of the existing meter has time delay when being used for checking, the check valve clack cannot check timely, and the use is inconvenient. This gate valve before table with non return function includes valve body, gate valve case and valve rod, and this valve rod control gate valve case causes the valve body to open or close, is provided with the non return case in the outlet pipe of valve body, is provided with on the non return case when the gate valve case closes the valve body, can prevent that the non return case from delaying to seal in the device of stepping down of valve body. The utility model has the advantages of reasonable design, simply, have and let the pressure chamber, enable the medium backward flow in the valve body and press, and the pressure release in letting the pressure chamber, cause the non return case can in time the non return, structural stability is high, convenient to use.

Description

Meter front gate valve with non-return function

Technical Field

The utility model belongs to the technical field of the valve body is made, a gate valve before table with non return function is related to.

Background

Before running water at a water supply end flows to a water using device at a user end through a water meter, a meter front valve is generally arranged in front of the water meter in order to prevent medium diversion, and the running water is generally realized by a gate valve with a non-return function.

For example, chinese patent literature discloses a check gate valve for an explosion-proof meter [ application No.: 201920598154.3, respectively; authorization notice number: CN209977355U ], which comprises a valve body and a valve cover, wherein the valve body is provided with a flow channel, the flow channel comprises an inlet end and an outlet end, a valve cover end is arranged on the valve body and positioned between the inlet end and the outlet end and perpendicular to the axial direction of the flow channel, the valve cover is screwed on the valve cover end, the specific structure further comprises a gate valve assembly and a check valve assembly, wherein the gate valve assembly comprises a valve rod, a valve 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 and is connected with the gate plate, and meanwhile, the gland is screwed on the valve cover and positioned on one side of the valve rod, which is far away from the gate plate; the check valve subassembly includes that check valve seat, check valve gap and check valve distinguish the subassembly, and check valve cover 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 seat 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.

In foretell explosion-proof table check gate valve, set up the pressure release hole on this check valve clack subassembly and be used for the pressure release of valve body, nevertheless the pressure release volume in this pressure release hole is limited, because the medium that closes the valve body in the twinkling of an eye has the effect that the refluence flows to the withstand voltage, and this check valve clack still has the condition of time delay when being used for the non return, and the check of check valve clack is untimely, and special use occasion is used inconveniently.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a gate valve before table that simple structure, non return case can in time the non return, structural stability is high has the non return function.

The purpose of the utility model can be realized by the following technical proposal: a meter front gate valve with a non-return function comprises a valve body, a gate valve spool and a valve rod, wherein the valve rod controls the gate valve spool to open or close the valve body; the pressure yielding device comprises a pressure yielding valve core, wherein a pressure yielding cavity is formed in the check valve core, the pressure yielding valve core is elastically assembled in the pressure yielding cavity of the check valve core, when the valve body is closed by the valve core of the gate valve, a medium in the valve body is applied to the pressure yielding valve core and enables the pressure yielding valve core to elastically displace in the pressure yielding cavity of the check valve core, so that the check valve core is sealed in the valve body in the first time.

This gate valve before table with non return function mainly sets up on the non return case and lets the pressure case, lets the pressure case in let pressure chamber elastic displacement enable the medium backward flow in the valve body press on letting the pressure case to the pressure release is in letting the pressure chamber, and structural stability is high, effectively prevents the time delay of non return function of non return case, convenient to use.

In foretell gate valve before table with non return function, non return case include case main part and the case guide arm with the same axial setting of case main part, the case main part on be provided with the valve and distinguish, and this valve distinguish and be used for leaning on sealedly with the valve body, the case guide arm be used for the direction assembly on the leading truck in the outlet pipe of valve body, the cover is equipped with compression spring on this case guide arm, and this compression spring elasticity acts on the case main part. The purpose that sets up like this makes the non return case sealed and the non return displacement is more stable in the valve body, and structural stability is high.

In the meter front gate valve with the non-return function, the pressure yielding cavity is positioned on the valve core main body, the cavity opening of the pressure yielding cavity faces the valve core of the gate valve, the valve core guide rod is provided with a guide groove, the guide groove is communicated with the pressure yielding cavity, a guide rod is coaxially assembled in the guide groove of the valve core guide rod, one end of the guide rod is coaxially connected with the pressure yielding valve core, the other end of the guide rod penetrates through the bottom of the guide groove of the valve core guide rod, and a sealing structure which enables the guide rod and the valve core guide rod to be in sealing fit when the non-return valve core is used for non-return in the valve body is arranged between the guide rod and the valve core guide rod; the guide rod is sleeved with a telescopic spring which elastically acts on the pressure yielding valve core, so that the pressure yielding valve core elastically resets in the pressure yielding cavity. After the valve rod controls the valve core of the gate valve to close the valve body for a period of time, the expansion spring elastically acts on the pressure yielding valve core to enable the pressure yielding valve core to elastically reset in the pressure yielding cavity; this let pressure case in letting pressure chamber elasticity reset be used for the valve body to close the very first time in the valve body medium support press the position of stepping down of non return case, can effectively prevent non return case delay non return in the valve body, stable in structure.

In the meter front gate valve with the non-return function, the end part of the other end of the guide rod of the sealing structure is provided with a circular baffle which is coaxially arranged with the guide rod, a sealing ring is embedded on the inner wall of the circular baffle, and the end faces of the sealing ring and the valve core guide rod are abutted to seal. When the non-return valve core is used for non-return in the valve body, the telescopic spring is used for yielding the valve core to elastically reset in the yielding cavity, the reverse flow of a medium in the valve body is compressed under the combined action of the circular baffle, and the end faces of the circular baffle and the valve core guide rod are abutted against the sealed structure and are stable, so that the sealing effect is good.

In the above-mentioned gate valve before table with non return function, let and press the case on have with letting press the case integral type structure let press the guide pillar, let press the guide pillar direction and wear to locate in the guide way of case guide arm, the one end of guide bar be used for with let press the case let press the guide pillar with axial connection. The telescopic spring is sleeved on the guide rod, one end of the telescopic spring is elastically abutted against the end face of the yielding guide column, the other end of the telescopic spring is elastically abutted against the bottom of the guide groove of the valve core guide rod, and the purpose of setting is to enable the yielding valve core to be stable in elastic reset structure in the yielding cavity.

In the meter front gate valve with the non-return function, the pressure-yielding valve core is made of a rubber material, and when the pressure-yielding valve core is displaced to the bottom of the pressure-yielding cavity in the pressure-yielding cavity of the valve core main body, the pressure-yielding valve core and the valve core main body are abutted against and matched in a sealing manner. The purpose of this is: when the check valve core is not used for checking, the whole sealing performance of the check valve core is ensured, and the medium in the valve body easily carries out flow direction abutting pressure on the check valve core, so that the check valve core is in an open state in the valve body in a displacement mode.

Compared with the prior art, this gate valve before table with non return function's advantage does: structural design is reasonable, simple, has and lets the pressure chamber, enables the medium backward flow in the valve body and presses, and the pressure release in letting the pressure chamber, causes the non return case in time non return, and structural stability is high, convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the front gate valve with a check function.

Fig. 2 is a schematic sectional view of the front gate valve with a check function.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure, 1, a valve body; 2. a gate valve spool; 3. a valve stem; 4. a check valve core; 5. a pressure relief valve core; 6. pressing the cavity; 7. a valve core main body; 8. a valve core guide rod; 9. identifying a valve; 10. a compression spring; 11. a guide groove; 12. a guide bar; 13. a tension spring; 14. a circular baffle; 15. a seal ring; 16. and (5) yielding the guide pillar.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the meter front gate valve with the non-return function mainly comprises a valve body 1, a gate valve spool 2 and a valve rod 3, wherein the valve rod 3 controls the gate valve spool 2 to open or close the valve body 1, a non-return spool 4 is arranged in a water outlet pipe of the valve body 1, and a pressure relief device capable of preventing the non-return spool 4 from being sealed in the valve body 1 in a delayed manner when the gate valve spool 2 closes the valve body 1 is arranged on the non-return spool 4; during actual manufacturing, the specific implementation mode of the yielding device is as follows: mainly by letting press case 5 and forming, set up on the non return case 4 and let and press chamber 6, let press case 5 elastic assembly in non return case 4 let press chamber 6, when gate valve case 2 closed valve body 1, the medium in the valve body 1 was executed and is pressed in letting press case 5, and made and let press case 5 in non return case 4 let press chamber 6 in the elasticity displacement, cause non return case 4 the very first time to seal in valve body 1.

During actual manufacturing, the check valve core 4 mainly comprises a valve core main body 7 and a valve core guide rod 8 which is coaxially arranged with the valve core main body 7, wherein a valve identification 9 is arranged on the valve core main body 7, the valve identification 9 is used for abutting against and sealing the valve body 1, the valve core guide rod 8 is used for guiding and assembling on a guide frame in a water outlet pipe of the valve body 1, a compression spring 10 is sleeved on the valve core guide rod 8, and the compression spring 10 elastically acts on the valve core main body 7; the pressure yielding cavity 6 is positioned on the valve core main body 7, the opening of the pressure yielding cavity 6 faces the gate valve core 2, a guide groove 11 is formed in the valve core guide rod 8, the guide groove 11 is communicated with the pressure yielding cavity 6, a guide rod 12 is coaxially assembled in the guide groove 11 of the valve core guide rod 8, one end of the guide rod 12 is coaxially connected with the pressure yielding valve core 5, the other end of the guide rod 12 penetrates through the bottom of the guide groove 11 of the valve core guide rod 8, and a sealing structure which enables the guide rod 12 and the valve core guide rod 8 to be in sealing fit when the check valve core 4 is used for checking in the valve body 1 is arranged between the guide rod 12 and the valve core guide rod 8; the guide rod 12 is sleeved with an extension spring 13 which elastically acts on the pressure-yielding valve core 5, so that the pressure-yielding valve core 5 elastically resets in the pressure-yielding cavity 6.

In actual manufacturing, the sealing structure is specifically implemented as follows: the end part of the other end of the guide rod 12 is provided with a circular baffle 14 which is coaxially arranged with the guide rod 12, the inner wall of the circular baffle 14 is embedded with a sealing ring 15, and the sealing ring 15 and the end surface of the valve core guide rod 8 are abutted and sealed.

During actual manufacturing, the pressure-yielding valve core 5 is provided with a pressure-yielding guide pillar 16 which is in an integrated structure with the pressure-yielding valve core 5, the pressure-yielding guide pillar 16 is guided to penetrate through the guide groove 11 of the valve core guide rod 8, and one end of the guide rod 12 is coaxially connected with the pressure-yielding guide pillar 16 of the pressure-yielding valve core 5; the yielding valve core 5 is made of rubber materials, and when the yielding valve core 5 moves to the bottom of the yielding cavity 6 in the yielding cavity 6 of the valve core main body 7, the yielding valve core 5 and the valve core main body 7 are abutted and matched in a sealing mode.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The meter front gate valve with the non-return function comprises a valve body (1), a gate valve spool (2) and a valve rod (3), wherein the valve rod (3) controls the gate valve spool (2) to open or close the valve body (1), and a non-return spool (4) is arranged in a water outlet pipe of the valve body (1), and is characterized in that a pressure yielding device capable of preventing the non-return spool (4) from being sealed in the valve body (1) in a delayed manner when the gate valve spool (2) closes the valve body (1) is arranged on the non-return spool (4); let the pressure equipment including letting press case (5), non return case (4) on set up and let and press chamber (6), let press case (5) elasticity assemble in the chamber (6) of letting press of non return case (4), when gate valve case (2) closed valve body (1), the medium in valve body (1) was executed and is pressed in letting press case (5), and made and let press case (5) in the chamber (6) of letting press of non return case (4) elastic displacement, caused non return case (4) the very first time to seal in valve body (1).

2. The meter front gate valve with the non-return function according to claim 1, characterized in that the non-return valve core (4) comprises a valve core main body (7) and a valve core guide rod (8) coaxially arranged with the valve core main body (7), the valve core main body (7) is provided with a valve identification (9), the valve identification (9) is used for abutting against the valve body (1) for sealing, the valve core guide rod (8) is used for guiding and assembling on a guide frame in a water outlet pipe of the valve body (1), the valve core guide rod (8) is sleeved with a compression spring (10), and the compression spring (10) elastically acts on the valve core main body (7).

3. The meter front gate valve with check function according to claim 2, the pressure yielding cavity (6) is positioned on the valve core main body (7), the orifice of the pressure yielding cavity (6) faces the valve core (2) of the gate valve, the valve core guide rod (8) is provided with a guide groove (11), the guide groove (11) is communicated with the pressure relief cavity (6), a guide rod (12) is coaxially assembled in the guide groove (11) of the valve core guide rod (8), one end of the guide rod (12) is coaxially connected with the pressure relief valve core (5), the other end of the guide rod (12) penetrates through the bottom of the guide groove (11) of the valve core guide rod (8), when the check valve core (4) is used for checking in the valve body (1) is arranged between the guide rod (12) and the valve core guide rod (8), the sealing structure enables the guide rod (12) and the valve core guide rod (8) to be in sealing fit; the guide rod (12) is sleeved with an extension spring (13) which elastically acts on the pressure yielding valve core (5) to enable the pressure yielding valve core (5) to elastically reset in the pressure yielding cavity (6).

4. The meter front gate valve with the non-return function according to claim 3, characterized in that the sealing structure comprises a circular baffle (14) coaxially arranged with the guide rod (12) and arranged at the end part of the other end of the guide rod (12), a sealing ring (15) is embedded on the inner wall of the circular baffle (14), and the sealing ring (15) and the end surface of the valve core guide rod (8) are abutted and sealed.

5. The meter front gate valve with the non-return function according to claim 4, characterized in that the pressure-yielding valve core (5) is provided with a pressure-yielding guide post (16) which is integrated with the pressure-yielding valve core (5), the pressure-yielding guide post (16) is guided and arranged in the guide groove (11) of the valve core guide rod (8), and one end of the guide rod (12) is coaxially connected with the pressure-yielding guide post (16) of the pressure-yielding valve core (5).

6. The meter front gate valve with the non-return function according to claim 5, characterized in that the pressure-yielding valve core (5) is made of rubber material, and when the pressure-yielding valve core (5) is displaced in the pressure-yielding cavity (6) of the valve core main body (7) to the bottom of the pressure-yielding cavity (6), the pressure-yielding valve core (5) and the valve core main body (7) are in abutting sealing fit.