CN209762341U

CN209762341U - Check valve

Info

Publication number: CN209762341U
Application number: CN201920462479.9U
Authority: CN
Inventors: 蒋腾; 吴凤仪; 张冠平; 杨左夫; 吴立标; 何宗取
Original assignee: Zhejiang Kabo Copper Co Ltd
Current assignee: Zhejiang Kabo Copper Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2019-12-10
Anticipated expiration: 2029-04-08

Abstract

The utility model provides a check valve belongs to valve technical field. It has solved the valve plate of current check valve and has rotated according to the focus, and closing speed is slower problem. The check valve comprises a valve body, wherein one end of the valve body is provided with a water inlet pipe joint, the other end of the valve body is provided with a water outlet pipe joint, the water inlet pipe joint and the water outlet pipe joint are axially distributed and communicated with each other in the valve body, a circular baffle is hinged in the valve body, the baffle can prevent a medium from flowing backwards from the water inlet pipe joint, and an automatic adjusting device which can enable the baffle to be quickly turned to a vertical state and is in sealing fit with the water inlet pipe joint is arranged in the baffle. The utility model discloses enable the baffle and can overturn fast to vertical state and advance water pipe head sealing fit, the sealed speed of non return is very fast, and the non return effect is better.

Description

Check valve

Technical Field

The utility model belongs to the technical field of the valve, a check valve is related to.

Background

The check valve is a valve which automatically opens and closes a baffle depending on the flow of a medium, and is used for preventing the medium from flowing backwards, and is also called a check valve, a reflux valve and a back pressure valve. The check valve is an automatic valve and mainly used for preventing medium from flowing backwards, preventing the pump and a driving motor from reversing and discharging container medium.

For example, Chinese patent numbers are: the check valve of '201510105081.6' has the following specific structure: comprises a shell, a screw rod, a valve rod and a valve plate; the shell is of a hollow tubular structure, the two ends of the shell are respectively provided with a first connecting part and a second connecting part, a cavity is arranged in the middle of the shell, and a sealing port is arranged in the cavity and close to the first connecting part; the screw rod is arranged at the top in the shell, one end of the screw rod is fixedly provided with a bearing, the other end of the screw rod is connected into the cavity, the valve rod penetrates through the bearing, and the valve plate is fixedly connected with the valve rod; the valve plate can drive the bearing to rotate so as to cover the sealing port.

In the above structure, when the inlet pressure of the first connecting portion is greater than the sum of the weight of the valve plate and the flow resistance thereof, the seal port is opened; on the contrary, when the medium flows backwards, the valve plate rotates along the gravity center, and the sealing port is closed. The existing valve plate is not provided with a counterweight device, and is generally sealed in a non-return way according to the gravity center of the valve plate, the non-return sealing speed of the valve plate is slow, and the non-return effect is not good; leakage can be caused when the valve plate is not tightly abutted and contacted with the sealing port when the valve plate covers the sealing port; the valve plate is arranged in the shell, a maintenance opening is not formed in the valve body at the position of the valve plate, and the valve plate is inconvenient to replace, assemble, install and clean when the valve plate is used for a long time.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, baffle can overturn fast to vertical state and the sealed complex check valve of water inlet pipe head.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a check valve, includes the valve body, the one end of valve body inlet tube connects, the other end has outlet pipe to connect, inlet tube connect and outlet pipe connect be axial distribution and these both communicate with each other in the valve body, its characterized in that, the valve body in articulated have be circular shape baffle and this baffle can prevent that the medium from flowing backwards in the inlet tube connects, the baffle in be provided with and enable the baffle and overturn to vertical state and the sealed complex automatic regulating apparatus of inlet tube connects fast.

This check valve is mainly provided with automatic regulating apparatus in the baffle to cause the baffle to overturn fast to vertical state and advance water pipe head seal fit through automatic regulating apparatus, the sealed speed of non return is very fast, and the non return effect is better.

In the check valve, the valve body is internally provided with a hinge seat, the baffle is provided with a hinge part with a hinge hole, and the hinge part of the baffle is hinged in the hinge hole of the hinge seat of the valve body through a pin shaft. The purpose of this arrangement is to allow the baffle to be built into the valve body.

In foretell check valve, automatic regulating apparatus radially seted up the regulation hole in including the baffle, the regulation hole with the hinge hole on the baffle vertical distribution and the last drill way and the hinge hole intercommunication of this regulation hole, the lower drill way of regulation hole run through the lower lateral wall of baffle, the regulation hole in slide and be provided with more than one balancing weight, the lower drill way department of regulation hole still be provided with when the baffle overturns to vertical state fast, prevent that the balancing weight from breaking away from the block structure in regulation hole. When actually making, the quantity of this balancing weight sets up seven, and every balancing weight all is cylindricly and every balancing weight all can axial slip in the regulation hole, and when the baffle overturns to the in-process of vertical state from horizontal tilt state, this balancing weight has centrifugal force when the upset in the regulation hole, and the centrifugal force effect when every balancing weight is through the upset can accelerate the upset speed of baffle, and the upset speed is very fast.

In the check valve, the blocking structure comprises a plug, an external thread is arranged on the outer wall of the plug, an internal thread is arranged on the inner wall of the lower orifice of the adjusting hole, and the plug is spirally connected to the internal thread of the lower orifice of the joint hole through the external thread. The purpose that sets up like this makes things convenient for the downthehole balancing weight of assembling of adjusting.

In foretell check valve, inlet tube connects the inner have and be annular undergauge and support the portion, undergauge support and to have set firmly the sealing ring in the portion, when the baffle overturns to vertical state, and the left side wall of this baffle supports with the sealing ring and supports and seal.

In the check valve, the right side wall of the baffle is also provided with an elastic rubber abutting ring, an abutting ring seat is arranged in the valve body between the water outlet pipe connector and the valve body, and when the baffle is turned to a horizontal inclined state, the elastic rubber abutting ring elastically abuts against the abutting ring seat. The purpose that sets up like this prevents that the baffle from damaging the valve body inner wall, influencing the sealed effect of non return.

In the check valve, the valve body is also provided with an assembly seat communicated with the water inlet pipe joint and the water outlet pipe joint, the assembly seat is detachably connected with the cap in a sealing manner, and the cap is internally provided with a pressure reducing device for preventing the water pressure in the valve body from increasing when the baffle is overturned to a horizontal inclined state. The purpose of setting up like this is that convenient baffle is changed, is assembled, is installed, is washd.

In the check valve, the pressure reducing device comprises a piston plate in sliding fit with the cap, a compression spring is arranged in the cap, one end of the compression spring is elastically abutted against the inner wall of the cap, the other end of the compression spring is elastically abutted against the piston plate, and the cap is further provided with a retaining ring for preventing the piston plate from being separated from the cap. The purpose of setting up like this can prevent that the internal water pressure of valve from increasing, influences the baffle and overturn to the horizontal tilt state opening speed.

Compared with the prior art, the check valve has the advantages that: be provided with automatic regulating apparatus in the baffle of this check valve to enable the baffle can overturn fast to vertical state and advance water pipe head seal fit through automatic regulating apparatus, the sealed speed of non return is very fast, and the non return is effectual, and the contrary leakproofness is good, contrary stable performance that ends, sets up the assembly seat in addition on the valve body, and it is convenient to change, assemble, install, wash.

Drawings

Fig. 1 is a schematic perspective view of the check valve in exploded form.

Fig. 2 is a schematic sectional view of the check valve.

In the figure, 1, a valve body; 2. a water inlet pipe joint; 3. a water outlet pipe joint; 4. a baffle plate; 5. a hinged seat; 6. a hinge portion; 7. a pin shaft; 8. an adjustment hole; 9. a balancing weight; 10. a plug; 11. a reduced diameter abutting portion; 12. a seal ring; 13. an elastic rubber abutment ring; 14. an abutting ring seat; 15. assembling a seat; 16. capping; 17. a piston plate; 18. a compression spring; 19. and (4) a baffle ring.

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 and fig. 2, this check valve mainly comprises valve body 1, and the one end of valve body 1 has inlet tube connector 2, and the other end has outlet tube connector 3, and inlet tube connector 2 and outlet tube connector 3 are axial distribution and these two communicate each other in valve body 1, and articulated in the valve body 1 have be circular shape baffle 4 and this baffle 4 can prevent that the medium from advancing the interior refluence of tube connector 2, and when actual manufacturing, this baffle 4 and valve body 1's concrete connection mode is: a hinge seat 5 is arranged in the valve body 1, a hinge part 6 with a hinge hole is arranged on the baffle 4, and the hinge part 6 of the baffle 4 is hinged in the hinge hole of the hinge seat 5 of the valve body 1 through a pin shaft 7.

An automatic adjusting device which can enable the baffle 4 to be quickly turned to a vertical state and is in sealing fit with the water inlet pipe joint 2 is arranged in the baffle 4; in actual manufacturing, the specific implementation of the automatic adjusting device is as follows: adjusting hole 8 has been seted up to baffle 4 internal diameter, adjusting hole 8 and hinge hole vertical distribution on baffle 4 and the last drill way and the hinge hole intercommunication of this adjusting hole 8, the lower drill way of adjusting hole 8 runs through the lower lateral wall of baffle 4, it is provided with seven balancing weights 9 to slide in the adjusting hole 8, the lower drill way department of adjusting hole 8 still is provided with when baffle 4 overturns to vertical state fast, prevents that balancing weight 9 from breaking away from the block structure of adjusting hole 8.

In actual manufacturing, the specific implementation of the blocking structure is as follows: the adjusting hole mainly comprises a plug 10, wherein an external thread is arranged on the outer wall of the plug 10, an internal thread is arranged on the inner wall of the lower orifice of the adjusting hole 8, and the plug 10 is in threaded connection with the internal thread of the lower orifice of the pitch hole through the external thread.

In actual manufacturing, the structure of the baffle 4 in sealing fit with the water inlet pipe connector 2 is as follows: the inner end of the water inlet pipe joint 2 is provided with an annular reducing abutting part 11, a sealing ring 12 is fixedly arranged on the reducing abutting part 11, and when the baffle plate 4 is turned to be in a vertical state, the left side wall of the baffle plate 4 abuts against and is sealed with the sealing ring 12; the right side wall of the baffle 4 is also provided with an elastic rubber abutting ring 13, an abutting ring seat 14 is arranged in the valve body 1 between the water outlet pipe joint 3 and the valve body 1, and when the baffle 4 is turned to a horizontal inclined state, the elastic rubber abutting ring 13 is elastically abutted against the abutting ring seat 14.

During actual manufacturing, the valve body 1 is further provided with an assembly seat 15 communicated with the water inlet pipe connector 2 and the water outlet pipe connector 3, the assembly seat 15 is detachably connected with a cover cap 16 in a sealing mode, and a pressure reducing device for preventing water pressure in the valve body 1 from increasing when the baffle plate 4 is turned to a horizontal inclined state is arranged in the cover cap 16.

In actual manufacturing, the specific embodiments of the pressure reducing device are as follows: the anti-dropping device mainly comprises a piston plate 17 in sliding fit with a cap 16, a compression spring 18 is arranged in the cap 16, one end of the compression spring 18 is elastically abutted against the inner wall of the cap 16, the other end of the compression spring 18 is elastically abutted against the piston plate 17, and a retaining ring 19 for preventing the piston plate 17 from being separated from the cap 16 is further arranged on the cap 16.

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 utility model provides a check valve, includes valve body (1), the one end of valve body (1) inlet tube connects (2), the other end has outlet pipe joint (3), inlet pipe joint (2) and outlet pipe joint (3) be axial distribution and these both communicate each other in valve body (1), its characterized in that, valve body (1) in articulated have and be circular shape baffle (4) and this baffle (4) can prevent that the medium from flowing backwards in inlet pipe joint (2), baffle (4) in be provided with and enable baffle (4) quick upset to vertical state and inlet pipe joint (2) seal fit's automatic regulating apparatus.

2. The non-return valve according to claim 1, characterized in that a hinge seat (5) is arranged in the valve body (1), a hinge part (6) with a hinge hole is arranged on the baffle plate (4), and the hinge part (6) of the baffle plate (4) is hinged in the hinge hole of the hinge seat (5) of the valve body (1) through a pin shaft (7).

3. The check valve according to claim 2, characterized in that the automatic adjusting device comprises a baffle (4) which is provided with an adjusting hole (8) in the radial direction, the adjusting hole (8) and the hinge hole are vertically distributed on the baffle (4) and the upper orifice of the adjusting hole (8) is communicated with the hinge hole, the lower orifice of the adjusting hole (8) penetrates through the lower side wall of the baffle (4), more than one balancing weight (9) is arranged in the adjusting hole (8) in a sliding manner, and a blocking structure for preventing the balancing weight (9) from being separated from the adjusting hole (8) is further arranged at the lower orifice of the adjusting hole (8) when the baffle (4) is rapidly turned to a vertical state.

4. The check valve according to claim 3, characterized in that the blocking structure comprises a plug (10), the outer wall of the plug (10) is provided with an external thread, the inner wall of the lower orifice of the adjusting hole (8) is provided with an internal thread, and the plug (10) is spirally connected to the internal thread of the lower orifice of the pitch hole through the external thread.

5. The check valve according to claim 4, characterized in that the inner end of the water inlet pipe joint (2) is provided with a ring-shaped reducing abutting part (11), a sealing ring (12) is fixedly arranged on the reducing abutting part (11), and when the baffle plate (4) is turned to a vertical state, the left side wall of the baffle plate (4) abuts against and seals the sealing ring (12).

6. The check valve according to claim 5, characterized in that the right side wall of the baffle (4) is further provided with an elastic rubber abutting ring (13), an abutting ring seat (14) is arranged in the valve body (1) between the water outlet pipe joint (3) and the valve body (1), and when the baffle (4) is turned to a horizontal inclined state, the elastic rubber abutting ring (13) is elastically abutted against the abutting ring seat (14).

7. The check valve according to claim 6, characterized in that the valve body (1) is further provided with an assembly seat (15) communicated with the water inlet pipe joint (2) and the water outlet pipe joint (3), the assembly seat (15) is detachably and hermetically connected with a cap (16), and a pressure reducing device for preventing the water pressure in the valve body (1) from increasing when the baffle plate (4) is turned to a horizontal inclined state is arranged in the cap (16).

8. The check valve according to claim 7, characterized in that the pressure reducing means comprises a piston plate (17) slidably engaged with the cap (16), a compression spring (18) is disposed in the cap (16), one end of the compression spring (18) elastically abuts against the inner wall of the cap (16), the other end of the compression spring (18) elastically abuts against the piston plate (17), and a stopper ring (19) for preventing the piston plate (17) from being separated from the cap (16) is further disposed on the cap (16).