CN212718213U

CN212718213U - Bypass check valve of automatic recirculation pump protection valve

Info

Publication number: CN212718213U
Application number: CN202020897000.7U
Authority: CN
Inventors: 洪文兴
Original assignee: Jiangsu Huaying Valves Co ltd
Current assignee: Jiangsu Huaying Valves Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-03-16
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses a bypass check valve of an automatic recirculation pump protection valve, which comprises a fixed knob, a valve body and a valve seat mechanism, wherein the valve seat mechanism runs through the middle position inside the valve body; a bypass mechanism is arranged on one side of the valve body, and a sealing anti-backflow mechanism is arranged between the bypass mechanism and the valve seat mechanism; a backflow prevention cylindrical surface disposed at an inner middle position of the valve seat mechanism; the valve clack is arranged between the sealing anti-backflow mechanism and the bypass mechanism; the backflow prevention cylindrical surface and the valve seat mechanism are distributed at a right angle to form a mutual crossing relation; the valve clack and the sealing backflow-preventing mechanism are coaxially arranged. The utility model discloses a bypass check valve that sealed anti-reflux mechanism set up appears breaking or when opening and close the protection valve in the transportation, and the device can avoid appearing the condition of backward flow, promotes fixed joint piece through bypass mechanism and removes to one side.

Description

Bypass check valve of automatic recirculation pump protection valve

Technical Field

The utility model relates to a protection valve technical field specifically is an automatic bypass check valve of recirculating pump protection valve.

Background

An automatic recirculation pump protection valve is a device which is connected with a pipe for transporting fluid substances through a valve body.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved:

(1) the traditional automatic recirculation pump protection valve is not provided with a bypass check valve, so that the backflow condition can occur when the protection valve is cut off or opened and closed in the transportation process;

(2) in the traditional automatic recirculation pump protection valve, the check valve is not provided with a buffer structure, when the check valve needs to start the check water flow, the force application direction and the water flow direction are 90 degrees, so that the device can generate the condition of force application force, and no buffer device is arranged;

(3) the traditional automatic recirculation pump protection valve has poor sealing performance at the joint, and the requirement on the sealing performance for fluid substances is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic bypass check valve of recirculating pump protection valve to propose not setting up the relatively poor problem of leakproofness that buffer structure and junction were not set up to bypass check valve, check valve in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a bypass check valve of an automatic recirculation pump protection valve comprises a fixed knob, a valve body and a valve seat mechanism, wherein the valve seat mechanism penetrates through the middle position inside the valve body; a bypass mechanism is arranged on one side of the valve body, and a sealing anti-backflow mechanism is arranged between the bypass mechanism and the valve seat mechanism; a backflow prevention cylindrical surface disposed at an inner middle position of the valve seat mechanism; the valve clack is arranged between the sealing anti-backflow mechanism and the bypass mechanism; the backflow prevention cylindrical surface and the valve seat mechanism are distributed at a right angle to form a mutual crossing relation; the valve clack and the sealing backflow-preventing mechanism are coaxially arranged.

Preferably, the bypass mechanism comprises a bypass joint, an installation spring, a movable cylindrical surface, a hinged rod and a valve clack, wherein the movable cylindrical surface penetrates through one side of the bypass joint, the movable cylindrical surface and the bypass joint are mutually sleeved, the valve clack is arranged on one side of the movable cylindrical surface, the valve clack is fixedly connected with the movable cylindrical surface through the hinged rod, the hinged rod is vertically and symmetrically distributed about the central axis of the movable cylindrical surface, the hinged rod and the valve clack form a mutually hinged relation, and the valve clack is fixedly connected with the sealing backflow prevention mechanism in a hinged mode.

Preferably, an installation spring is arranged between the movable cylindrical surface and the bypass joint, and the installation spring, the bypass joint and the movable cylindrical surface are coaxially sleeved with each other.

Preferably, sealed anti-return mechanism includes O type sealing washer, O type sealing washer passes through the block to be fixed in the junction of connecting fixture block and disk seat mechanism, sealed anti-return mechanism includes fixed joint piece and anti-return draw-in groove, fixed joint piece sets up between anti-return cylinder face and connection fixture block, constitute coaxial setting between connection fixture block, fixed joint piece and the anti-return cylinder face, anti-return draw-in groove sets up in one side of anti-return cylinder face, and constitutes the block relation between anti-return cylinder face and the anti-return draw-in groove, fixed connection between anti-return draw-in groove and the valve body.

Preferably, the valve seat mechanism comprises a first flow through hole, a preset spring and a second flow through hole, the first flow through hole penetrates through the middle position inside the valve body, the bottom end of the first flow through hole is fixedly connected with the preset spring, the bottom end of the preset spring is fixedly connected with the second flow through hole, and the second flow through hole penetrates through the middle position inside the valve body.

Preferably, the two sides of the valve body are fixedly connected with fixing knobs, and the fixing knobs are symmetrically distributed around the central axis of the valve body.

Compared with the prior art, the beneficial effects of the utility model are that: the bypass check valve of the automatic recirculation pump protection valve not only realizes the arrangement of the bypass check valve and the arrangement of a buffer structure on the check valve, but also realizes the enhancement of the sealing property of a connection part;

(1) the bypass check valve is arranged through the sealing backflow-preventing mechanism, when a cut-off or a protection valve is opened and closed in the transportation process, the device can avoid the backflow situation, the working principle of the sealing backflow-preventing mechanism is that the bypass mechanism pushes the fixing clamping block to move towards one side to be clamped and connected with the connecting clamping block, the backflow-preventing effect is achieved, the connecting clamping block and the backflow-preventing clamping groove are connected in a hinged mode, compared with the direct connection, the buffer space is increased, the protection device is achieved, the connecting clamping block is clamped and connected between one side of the valve body and the valve body, the fixing clamping block is fixedly connected to one side of the connecting clamping block, and the fixing clamping block drives the backflow-preventing cylindrical surface on one side to horizontally move left and right to achieve the effect of preventing the backflow of fluid in;

(2) the buffering structure is arranged in the bypass mechanism, so that a better force application effect is achieved, when the check valve needs to be started to stop water flow, the force application direction and the water flow flowing direction are 90 degrees, the device can generate a force application and force application situation, the working principle of the bypass mechanism is that the bypass joint is pushed to one side, the bypass joint drives the movable cylindrical surface to slide towards one side, the movable cylindrical surface is fixedly connected with the valve clack through the hinge rod, the valve clack is fixed with the connecting clamping block in a hinge mode, the buffering protection purpose is achieved by adding the gasket in the structure, and the protection effect is better compared with that of directly and fixedly connecting the structure;

(3) can reach better sealed effect through O type sealing washer, the leakproofness of traditional device junction is relatively poor, but to fluid material, the requirement of leakproofness will be higher, and O type sealing washer and connection fixture block mutually support and can make the junction of valve body and bypass mechanism obtain better sealed effect at bypass mechanism during operation.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is a partial schematic view of the bypass mechanism of the present invention;

fig. 3 is an enlarged partial sectional view of the utility model at a in fig. 1;

fig. 4 is a partial schematic view of the sealing backflow prevention mechanism of the present invention.

In the figure: 1. fixing the knob; 2. a valve body; 3. a valve seat mechanism; 301. a first flow through hole; 302. presetting a spring; 303. a second flow through hole; 4. a sealing anti-backflow mechanism; 401. connecting a clamping block; 402. an O-shaped sealing ring; 403. fixing the clamping block; 404. a backflow prevention cylindrical surface; 405. a backflow prevention clamping groove; 5. a bypass mechanism; 501. a bypass connection; 502. installing a spring; 503. a movable cylindrical surface; 504. a hinged lever; 505. and the valve clack.

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. 1-4, the present invention provides an embodiment: a bypass check valve of a protective valve of an automatic recirculation pump comprises a fixed knob 1, a valve body 2 and a valve seat mechanism 3, wherein the valve seat mechanism 3 penetrates through the middle position in the valve body 2;

the valve seat mechanism 3 comprises a first flow through hole 301, a preset spring 302 and a second flow through hole 303, the first flow through hole 301 penetrates through the middle position in the valve body 2, the preset spring 302 is fixedly connected to the bottom end of the first flow through hole 301, the second flow through hole 303 is fixedly connected to the bottom end of the preset spring 302, and the second flow through hole 303 penetrates through the middle position in the valve body 2;

specifically, as shown in fig. 1 and 4, when using the mechanism, first, the valve seat mechanism 3 works by connecting the top end and the bottom end of the valve seat mechanism 3 with a pipe, so that the fluid flows into the interior of the valve body 2 from the first flow through hole 301, the flow is assisted by the preset spring 302, and the operation of the sealing backflow prevention mechanism 4 is started when the fluid reaches the second flow through hole 303;

one side of the valve body 2 is provided with a bypass mechanism 5 and a valve clack 505, and the valve clack 505 is arranged between the sealed backflow prevention mechanism 4 and the bypass mechanism 5; wherein, the valve flap 505 and the sealing backflow-preventing mechanism 4 are coaxially arranged, the bypass mechanism 5 comprises a bypass joint 501, a mounting spring 502, a movable cylindrical surface 503, a hinged rod 504 and the valve flap 505, the movable cylindrical surface 503 penetrates through one side of the bypass joint 501, and the movable cylindrical surface 503 and the bypass joint 501 are in a sleeved relation, one side of the movable cylindrical surface 503 is provided with a valve flap 505, the valve flap 505 is fixedly connected with the movable cylindrical surface 503 through a hinge rod 504, the hinge rods 504 are distributed up and down symmetrically about the central axis of the movable cylindrical surface 503, the hinge rod 504 and the valve flap 505 are hinged with each other, the valve flap 505 is fixedly connected with the sealing backflow-preventing mechanism 4 through a hinge mode, an installation spring 502 is arranged between the movable cylindrical surface 503 and the bypass joint 501, the installation spring 502, the bypass joint 501 and the movable cylindrical surface 503 form a coaxial sleeved relation;

specifically, as shown in fig. 1 and fig. 2, when the mechanism is used, firstly, a better force application effect is achieved through a buffer structure arranged inside a bypass mechanism 5, when a check valve needs to be started to stop water flow, because the direction of the force application and the direction of the water flow are 90 degrees, the force application and force application of the device can be forced, the working principle of the bypass mechanism 5 is that a bypass joint 501 is pushed to one side, the bypass joint 501 drives a movable cylindrical surface 503 to slide to one side, the movable cylindrical surface 503 is fixedly connected with a valve flap 505 through a hinge rod 504, and the valve flap 505 is fixed with a connecting fixture block 401 through a hinge mode;

a sealing backflow prevention mechanism 4 and a backflow prevention cylindrical surface 404 are arranged between the bypass mechanism 5 and the valve seat mechanism 3, the backflow prevention cylindrical surface 404 is arranged at the middle position inside the valve seat mechanism 3, and the backflow prevention cylindrical surface 404 and the valve seat mechanism 3 are distributed at a right angle to form an intercrossing relationship; the sealing backflow-preventing mechanism 4 comprises an O-shaped sealing ring 402, the O-shaped sealing ring 402 is fixed at the joint of the connecting clamping block 401 and the valve seat mechanism 3 through clamping, the sealing backflow-preventing mechanism 4 comprises a fixing clamping block 403 and a backflow-preventing clamping groove 405, the fixing clamping block 403 is arranged between the backflow-preventing cylindrical surface 404 and the connecting clamping block 401, the fixing clamping block 403 and the backflow-preventing cylindrical surface 404 are coaxially arranged, the backflow-preventing clamping groove 405 is arranged on one side of the backflow-preventing cylindrical surface 404, a clamping relation is formed between the backflow-preventing cylindrical surface 404 and the backflow-preventing clamping groove 405, and the backflow-preventing clamping groove 405 is fixedly connected with the valve body 2;

specifically, as shown in fig. 1 and fig. 3, when the mechanism is used, firstly, when a cut-off or a protective valve is opened or closed in a transportation process occurs through a bypass check valve arranged in the sealing backflow prevention mechanism 4, the device can avoid a backflow situation, the working principle of the sealing backflow prevention mechanism 4 is that the bypass mechanism 5 pushes the fixed clamping block 403 to move towards one side to be clamped and connected with the connecting clamping block 401, so as to achieve a backflow prevention effect, the connecting clamping block 401 is connected with the backflow prevention clamping groove 405 in a hinged manner, compared with a direct connection, a buffering space is added, so as to achieve a protection device effect, the connecting clamping block 401 is clamped and connected between one side of the valve body 2 and the valve body 2, the fixed clamping block 403 is fixedly connected to one side of the connecting clamping block 401, the backflow prevention cylindrical surface 404 on one side is driven by the fixed clamping block 403 to horizontally move left and right, so as to achieve an effect, the O-shaped sealing ring 402 can achieve a better sealing effect, the sealing performance of the joint of the traditional device is poor, but the requirement on the sealing performance is higher for fluid substances, and the O-shaped sealing ring 402 and the connecting fixture block 401 are matched with each other to enable the joint of the valve body 2 and the bypass mechanism 5 to achieve a better sealing effect when the bypass mechanism 5 works;

the two sides of the valve body 2 are fixedly connected with the fixed knobs 1, and the fixed knobs 1 are symmetrically distributed around the central axis of the valve body 2;

specifically, as shown in fig. 1, when the mechanism is used, the valve body 2 and the valve seat mechanism 3 are fixedly connected through fixing knobs 1 symmetrically distributed on both sides of the valve body 2.

The working principle is as follows: when the utility model is used, firstly, the device can avoid the backflow condition when the cutoff or the opening and closing of the protection valve occurs in the transportation process through the bypass check valve arranged on the sealing anti-backflow mechanism 4, the working principle of the valve seat mechanism 3 is that the top end and the bottom end of the valve seat mechanism 3 are connected with the pipeline, so that the fluid flows into the interior of the valve body 2 from the first flow hole 301, the fluid flows with the assistance of the preset spring 302, the sealing anti-backflow mechanism 4 starts to work when the fluid reaches the second flow hole 303, the valve body 2 and the valve seat mechanism 3 are fixedly connected through the fixed knobs 1 which are symmetrically distributed on the two sides of the valve body 2, the working principle of the sealing anti-backflow mechanism 4 is that the fixed clamping block is pushed to move to one side by the bypass mechanism 5 to be connected with the clamping block 401 in a clamping way, the anti-backflow effect is achieved, the connecting clamping block, compare in the space that lug connection has increased the buffering, play protector's effect, connect fixture block 401 and be connected between one side of valve body 2 and valve body 2 block, connect one side fixedly connected with fixed joint piece 403 of fixture block 401, horizontal migration reaches the effect that prevents the fluid backward flow in the second flow through hole 303 about fixed joint piece 403 drives the anti-return cylindrical surface 404 of one side.

Afterwards, buffer structure through the inside setting of bypass mechanism 5, reach the effect of better application of force, traditional device is when need start check valve non return rivers, because the direction of application of force and the direction that rivers flow are 90 degrees, the device can appear the condition that application of force is hard, bypass mechanism 5's theory of operation is through promoting bypass joint 501 to one side, bypass joint 501 drives movable face of cylinder 503 and slides to one side, movable face of cylinder 503 passes through hinged rod 504 and valve clack 505 fixed connection, valve clack 505 is fixed with connection fixture block 401 through articulated mode, this structure is through having increased a gasket, play the purpose of buffering protection, it is better to compare in the protective effect of this structure of direct fixed connection.

Finally, better sealing effect can be achieved through the O-shaped sealing ring 402, the sealing performance of the joint of the traditional device is poor, but the requirement on the sealing performance is higher for fluid substances, and the O-shaped sealing ring 402 and the connecting fixture block 401 are matched with each other to enable the joint of the valve body 2 and the bypass mechanism 5 to obtain better sealing effect when the bypass mechanism 5 works.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A bypass check valve of an automatic recirculation pump protection valve comprises a fixed knob (1), a valve body (2) and a valve seat mechanism (3), wherein the valve seat mechanism (3) penetrates through the middle position inside the valve body (2); the method is characterized in that: a bypass mechanism (5) is arranged on one side of the valve body (2), and a sealing backflow prevention mechanism (4) is arranged between the bypass mechanism (5) and the valve seat mechanism (3); a backflow prevention cylindrical surface (404), the backflow prevention cylindrical surface (404) being provided at an inner intermediate position of the valve seat mechanism (3); a valve flap (505), the valve flap (505) being arranged between the sealing backflow prevention mechanism (4) and the bypass mechanism (5); the backflow-preventing cylindrical surface (404) and the valve seat mechanism (3) are distributed in a right-angle manner to form a mutual crossing relationship; the valve clack (505) and the sealing backflow-preventing mechanism (4) are coaxially arranged.

2. The bypass check valve of an automatic recirculation pump protection valve of claim 1, wherein: the bypass mechanism (5) comprises a bypass joint (501), an installation spring (502), a movable cylindrical surface (503), a hinge rod (504) and a valve flap (505), wherein the movable cylindrical surface (503) penetrates through one side of the bypass joint (501), the movable cylindrical surface (503) and the bypass joint (501) are mutually sleeved, the valve flap (505) is arranged on one side of the movable cylindrical surface (503), the valve flap (505) is fixedly connected with the movable cylindrical surface (503) through the hinge rod (504), the hinge rod (504) is vertically and symmetrically distributed about the central axis of the movable cylindrical surface (503), the hinge rod (504) and the valve flap (505) form a mutually hinged relation, and the valve flap (505) is fixedly connected with the sealing backflow prevention mechanism (4) in a hinged mode.

3. The bypass check valve of an automatic recirculation pump protection valve of claim 2, wherein: an installation spring (502) is arranged between the movable cylindrical surface (503) and the bypass joint (501), and the installation spring (502), the bypass joint (501) and the movable cylindrical surface (503) form a mutually sleeved relation under the coaxial condition.

4. The bypass check valve of an automatic recirculation pump protection valve of claim 1, wherein: the sealing anti-backflow mechanism (4) comprises an O-shaped sealing ring (402), the O-shaped sealing ring (402) is fixed at the joint of the connecting clamping block (401) and the valve seat mechanism (3) through clamping, the sealing anti-backflow mechanism (4) comprises a fixing clamping block (403) and an anti-backflow clamping groove (405), the fixing clamping block (403) is arranged between the anti-backflow cylindrical surface (404) and the connecting clamping block (401), the fixing clamping block (403) and the anti-backflow cylindrical surface (404) form a coaxial arrangement, the anti-backflow clamping groove (405) is arranged on one side of the anti-backflow cylindrical surface (404), a clamping relation is formed between the anti-backflow cylindrical surface (404) and the anti-backflow clamping groove (405), and the anti-backflow clamping groove (405) is fixedly connected with the valve body (2).

5. The bypass check valve of an automatic recirculation pump protection valve of claim 1, wherein: the valve seat mechanism (3) comprises a first flow through hole (301), a preset spring (302) and a second flow through hole (303), wherein the first flow through hole (301) penetrates through the middle position inside the valve body (2), the bottom end of the first flow through hole (301) is fixedly connected with the preset spring (302), the bottom end of the preset spring (302) is fixedly connected with the second flow through hole (303), and the second flow through hole (303) penetrates through the middle position inside the valve body (2).

6. The bypass check valve of an automatic recirculation pump protection valve of claim 1, wherein: the two sides of the valve body (2) are fixedly connected with the fixed knobs (1), and the fixed knobs (1) are symmetrically distributed about the central axis of the valve body (2).