CN218954118U

CN218954118U - Backflow prevention valve

Info

Publication number: CN218954118U
Application number: CN202320146830.XU
Authority: CN
Inventors: 陈思蒙; 张洁; 王芳
Original assignee: Jiangsu Shangou Valve Co ltd
Current assignee: Jiangsu Shangou Valve Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-05-02
Anticipated expiration: 2033-02-01

Abstract

The utility model discloses a backflow prevention valve, which is characterized in that flange plates are fixedly arranged at two ends of a pipe body, sealing grooves are formed in two ends of the pipe body, a diversion ring is fixedly arranged in one end of the pipe body, a rotating rod is movably arranged on the inner side of the pipe body, a supporting seat is movably arranged on the outer side of the bottom end of the rotating rod, a solid hemisphere is fixedly arranged on the outer side of the rotating rod, a filter screen hemisphere is fixedly arranged on one side of the solid hemisphere, and a diversion arc is arranged on the inner side of the filter screen hemisphere. Through sealing washer and the soft ring of water conservancy diversion that sets up, can provide one for the body is inside to increase filtering capability to the liquid flow through the filter core when using, reduce the influence of rivers to the low reaches, sealing washer and the soft ring of water conservancy diversion can the dismouting simultaneously, are convenient for change the filter core, are convenient for clear up and maintain, convenient to use.

Description

Backflow prevention valve

Technical Field

The utility model belongs to the technical field of valve control, and particularly relates to a backflow prevention valve.

Background

The valve is a pipeline accessory for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters (temperature, pressure and flow rate) of a conveying medium. According to the functions, the valve can be divided into a shutoff valve, a check valve, a regulating valve and the like, and the valve is a control component in a fluid conveying system and has the functions of stopping, regulating, guiding flow, preventing backflow, stabilizing pressure, diverting flow or overflow pressure relief and the like. Valves for fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, which are quite diverse in variety and specification.

In the use of the valve, some valves need to provide a backflow prevention function for the pipeline so as to meet certain operation requirements, but the existing backflow prevention valve is inconvenient to use, a certain filtering mechanism cannot be added, and the backflow prevention valve is inconvenient to use when the flow rate is regulated.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a backflow prevention valve, which solves the problems that the existing backflow prevention valve is inconvenient to use and a certain filtering mechanism cannot be added.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a backflow prevention valve, includes the body, the equal fixed mounting in both ends of body has the flange board, the both ends of body all are provided with the seal groove, the inside fixed mounting of body one end has the water conservancy diversion ring, the inboard movable mounting of body has the bull stick, the outside movable mounting of bull stick bottom has the supporting seat, the outside fixed mounting of bull stick has solid hemisphere, one side fixed mounting of solid hemisphere has the filter screen hemisphere, the inboard of filter screen hemisphere is provided with the water conservancy diversion arc, the internally mounted of body has the sealing washer, the inside fixed mounting of body has the cross bar, one side fixed mounting of cross bar has the slide bar, the other end fixed mounting of slide bar has the check ball, the outside movable sleeve of slide bar has the baffle, one side of baffle is provided with the arcwall, the outside sleeve connection spring of slide bar, the inside fixed mounting of body has the spacing ring, one side of spacing ring is provided with the arc wall, the inboard movable sleeve of body has the sealing washer, the one side of sealing washer installs the water conservancy diversion soft ring, the inboard of sealing washer has the top, the filter core is installed to the bull stick.

Preferably, the supporting seat is arranged in the pipe body, and the top end of the rotating rod is movably arranged on the inner side of the pipe body through a waterproof sealing bearing.

Through adopting above-mentioned technical scheme, advantage lies in being convenient for the bull stick and stably rotates, and the bull stick of being convenient for rotates and seals.

Preferably, the specification and the size of the sealing block are matched with those of the solid hemisphere and the filter screen hemisphere.

By adopting the technical scheme, the sealing device has the advantages of increasing stability and facilitating the sealing and the blocking of the inside of the pipe body.

Preferably, the outer side of the baffle plate is provided with an arc-shaped fillet.

By adopting the technical scheme, the water flow baffle has the advantages of reducing the reaction force of the water flow applied to the baffle, and being convenient for structure stability.

Preferably, one end of the spring is fixedly arranged on the outer side of the baffle plate, and the other end of the spring is fixedly arranged on one side of the cross rod.

Through adopting above-mentioned technical scheme, advantage lies in being convenient for rivers increase whole stability when flowing backwards, convenient to use.

Preferably, the specification and the size of the arc-shaped surface are matched with the specification and the size of the arc-shaped groove.

By adopting the technical scheme, the arc-shaped groove plugging device has the advantages that the arc-shaped groove can be plugged, and the matching operation is convenient.

Preferably, the flow guiding soft ring is movably sleeved on the inner side of the pipe body.

Through adopting above-mentioned technical scheme, advantage lies in being convenient for change the filter core, is convenient for clear up and maintain, convenient to use.

Compared with the prior art, the utility model has the beneficial effects that:

1. through with flange board and use the pipe connection to pack into the body with sealing washer and filter core, simultaneously put into the body with the soft ring of water conservancy diversion, then with the inside embedding sealing rubber ring of seal groove, after finishing the installation with the device, rivers enter into the filter core inboard through the soft ring of water conservancy diversion this moment, after filtering the core, again through the water conservancy diversion of spacing ring, rivers pass through the arcwall face extrusion baffle, and enter into the position of cross bar, the operating personnel rotates the swivel this moment, drive the bull stick and rotate, rotate solid hemisphere one side to filter screen hemisphere one side after the bull stick rotates, make the seal between solid hemisphere and the sealing block remove, the rivers are discharged through the clearance of filter screen hemisphere this moment, can enter into the holistic practicality of body other end through the water conservancy diversion of water conservancy diversion ring this moment, rivers extrusion this moment is in baffle one side simultaneously when the shutoff appears, and the baffle is ejecting under the effect of spring and rivers, make arcwall face embedding arc wall one side with spacing ring shutoff, with the inside shutoff of body, whole convenient to use has been avoided.

2. Through sealing washer and the soft ring of water conservancy diversion that sets up, can provide one for the body is inside to increase filtering capability to the liquid flow through the filter core when using, reduce the influence of rivers to the low reaches, sealing washer and the soft ring of water conservancy diversion can the dismouting simultaneously, are convenient for change the filter core, are convenient for clear up and maintain, convenient to use.

Drawings

FIG. 1 is a schematic view of a front perspective view of the present utility model;

FIG. 2 is a schematic view of a rear-view perspective appearance structure of the present utility model;

FIG. 3 is a schematic view of a front cross-sectional structure of the present utility model;

fig. 4 is an enlarged schematic view of the structure of fig. 3 a according to the present utility model.

In the figure: 1. a tube body; 2. a swivel; 3. a flange plate; 4. sealing grooves; 5. a guide ring; 6. a solid hemisphere; 7. a support base; 8. a diversion arc; 9. a hemispherical filter screen; 10. a cross bar; 11. a spring; 12. an arc-shaped groove; 13. a filter element; 14. a flow guiding soft ring; 15. a seal ring; 16. a limiting ring; 17. a slide bar; 18. a baffle; 19. an arc surface; 20. a blocking ball; 21. a rotating rod; 22. and a sealing block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments of the present utility model, are within the scope of the present utility model.

As shown in fig. 1-4, a backflow prevention valve comprises a pipe body 1, flange plates 3 are fixedly installed at two ends of the pipe body 1, sealing grooves 4 are arranged at two ends of the pipe body 1, a guide ring 5 is fixedly installed inside one end of the pipe body 1, a rotating rod 21 is movably installed inside the pipe body 1, a supporting seat 7 is movably installed outside the bottom end of the rotating rod 21, a solid hemisphere 6 is fixedly installed outside the rotating rod 21, a filter screen hemisphere 9 is fixedly installed on one side of the solid hemisphere 6, a guide arc 8 is arranged on the inner side of the filter screen hemisphere 9, a sealing block 22 is installed inside the pipe body 1, a cross rod 10 is fixedly installed inside the pipe body 1, a sliding rod 17 is fixedly installed on one side of the cross rod 10, a blocking ball 20 is fixedly installed at the other end of the sliding rod 17, a baffle 18 is movably sleeved on the outer side of the sliding rod 17, an arc-shaped surface 19 is arranged on one side of the baffle 18, a spring 11 is sleeved on the outer side of the sliding rod 17, a limiting ring 16 is fixedly installed inside the pipe body 1, a circular arc-shaped groove 12 is arranged on one side of the limiting ring 16, a sealing ring 15 is movably sleeved on the inner side of the pipe body 1, a sealing ring 15 is movably installed on one side of the sealing ring 15, a filter core 21 is installed on the top of the filter core 21, and a filter element is installed on the top of the filter core 21.

The working principle of the technical scheme is as follows:

when the sealing device is used, a user firstly connects the flange plate 3 with a using pipeline, the sealing ring 15 and the filter core 13 are arranged in the pipe body 1, meanwhile, the soft diversion ring 14 is arranged in the pipe body 1, then the sealing groove 4 is internally embedded into the sealing rubber ring, after the device is installed, water flow enters the inner side of the filter core 13 through the soft diversion ring 14, is filtered by the filter core 13 and then flows through the limiting ring 16, then the water flow presses the baffle 18 through the arc-shaped surface 19 and enters the position of the cross rod 10, at this moment, the operator rotates the rotating ring 2 to drive the rotating rod 21 to rotate, the rotating rod 21 rotates to rotate the side of the solid hemisphere 6 to the side of the filter screen hemisphere 9, so that sealing between the solid hemisphere 6 and the sealing block 22 is released, at this moment, the water flow is discharged through the gap of the filter screen hemisphere 9, at this moment, the water flow can enter the other end of the pipe body 1 to be convenient for the whole practicality, at this moment, when the water flow appears, the water flow is extruded on one side of the baffle 18, and the baffle 18 is ejected under the action of the spring 11 and the groove, the arc-shaped surface 19 is embedded into one side of the limiting ring 16, the whole body 1 is sealed by the arc-shaped surface 19, and the whole backflow blocking is avoided, and the backflow is convenient to use.

In another embodiment, as shown in fig. 3, the supporting seat 7 is installed inside the pipe body 1, and the top end of the rotating rod 21 is movably installed inside the pipe body 1 through a sealed waterproof bearing.

The supporting seat 7 provides a larger friction force for the rotating rod 21, so that the rotating rod 21 can rotate stably, and the rotating rod 21 can rotate and seal conveniently.

In another embodiment, as shown in fig. 3, the sealing block 22 is sized to fit the solid hemisphere 6 and the screen hemisphere 9.

The soft friction between the solid hemisphere 6 and the filter screen hemisphere 9 and the sealing block 22 can also increase a stabilizing force, so that after the position of the rotating rod 21 is conveniently adjusted, the rotating rod 21 is prevented from being driven to rotate by water flow, the stability is improved, and the inside of the pipe body 1 is conveniently plugged and sealed.

In another embodiment, as shown in FIG. 3, the outside of the baffle 18 is provided with arcuate fillets.

The arc rounded corners facilitate the baffle 18 to reduce the reaction force of the water flow applied to the baffle 18 during diversion, and facilitate the stable structure.

In another embodiment, as shown in fig. 3 and 4, one end of the spring 11 is fixedly installed at the outside of the barrier 18, and the other end of the spring 11 is fixedly installed at one side of the cross bar 10.

The spring 11 applies a force to the baffle 18 to resist water flow, so that the water flow is stable integrally when flowing back, and the use is convenient.

In another embodiment, as shown in fig. 3 and 4, the arcuate surface 19 is sized to fit the arcuate slot 12.

The arc-shaped surface 19 can be used for blocking the arc-shaped groove 12 while guiding the flow, so that the matching operation is facilitated.

In another embodiment, as shown in fig. 3, the soft guide ring 14 is movably sleeved on the inner side of the pipe body 1.

Through sealing washer 15 and the soft ring 14 of water conservancy diversion that set up, can increase filtering capability through filter core 13 for the inside providing of body 1 to the liquid flow when using, reduce the influence of rivers to the low reaches, sealing washer 15 and the soft ring 14 of water conservancy diversion can be dismantled and assembled simultaneously, are convenient for change filter core 13, are convenient for clear up and maintain, facilitate the use.

The working principle and the using flow of the utility model are as follows: when in use, a user firstly connects the flange plate 3 with a pipeline, the sealing ring 15 and the filter core 13 are arranged in the pipe body 1, meanwhile, the diversion soft ring 14 is arranged in the pipe body 1, then the sealing groove 4 is embedded into the sealing rubber ring, after the device is arranged, water flow enters the inner side of the filter core 13 through the diversion soft ring 14, is filtered by the filter core 13, is guided by the limiting ring 16, then is extruded by the baffle 18 through the arc-shaped surface 19 and enters the position of the cross rod 10, at this time, the operator rotates the rotating ring 2 to drive the rotating rod 21 to rotate, the rotating rod 21 rotates one side of the solid hemisphere 6 to one side of the filter screen hemisphere 9 to release the sealing between the solid hemisphere 6 and the sealing block 22, at this time, the water flow is discharged through the gap of the filter screen hemisphere 9, the water conservancy diversion that can pass through water conservancy diversion ring 5 at this moment enters into the body 1 other end and is convenient for holistic practicality, simultaneously when rivers appear flowing backwards, rivers extrusion is in baffle 18 one side this moment, and baffle 18 is ejecting under the effect of spring 11 and rivers, make arcwall face 19 embedding arc wall 12 with spacing ring 16 one side shutoff, with the inside shutoff of body 1, avoided flowing backwards, whole convenient to use, and through sealing washer 15 and the soft ring 14 of water conservancy diversion that set up, can provide one for body 1 is inside through filter core 13 and increase filtering capability to the liquid flow when using, reduce the influence of rivers to the low reaches, sealing washer 15 and the soft ring 14 of water conservancy diversion can be dismantled and assembled simultaneously, be convenient for change filter core 13, be convenient for clear up and maintain, convenient to use.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent backflow valve, includes body (1), its characterized in that: flange board (3) are all fixed mounting at both ends of body (1), the both ends of body (1) all are provided with seal groove (4), the inside fixed mounting of body (1) one end has guide ring (5), the inboard movable mounting of body (1) has bull stick (21), the outside movable mounting of bull stick (21) bottom has supporting seat (7), the outside fixed mounting of bull stick (21) has solid hemisphere (6), one side fixed mounting of solid hemisphere (6) has filter screen hemisphere (9), the inboard of filter screen hemisphere (9) is provided with guide arc (8), the internally mounted of body (1) has sealing block (22), the inside fixed mounting of body (1) has cross bar (10), one side fixed mounting of cross bar (10) has slide bar (17), the other end fixed mounting of slide bar (17) has check ball (20), the outside movable sleeve of slide bar (17) has baffle (18), one side of baffle (18) is provided with solid hemisphere (19), the inside fixed mounting of body (16) has arc limiting ring (16) of slide bar (1), the inner side of the pipe body (1) is movably sleeved with a sealing ring (15), one side of the sealing ring (15) is provided with a flow guide soft ring (14), the inner side of the sealing ring (15) is provided with a filter core (13), and the top end of the rotating rod (21) is provided with a rotating ring (2).

2. A backflow prevention valve according to claim 1, wherein: the support seat (7) is arranged in the pipe body (1), and the top end of the rotating rod (21) is movably arranged on the inner side of the pipe body (1) through a waterproof sealing bearing.

3. A backflow prevention valve according to claim 1, wherein: the specification and the size of the sealing block (22) are matched with those of the solid hemisphere (6) and the filter screen hemisphere (9).

4. A backflow prevention valve according to claim 1, wherein: the outer side of the baffle (18) is provided with an arc-shaped round angle.

5. A backflow prevention valve according to claim 1, wherein: one end of the spring (11) is fixedly arranged on the outer side of the baffle plate (18), and the other end of the spring (11) is fixedly arranged on one side of the cross rod (10).

6. A backflow prevention valve according to claim 1, wherein: the specification and the size of the arc-shaped surface (19) are matched with those of the arc-shaped groove (12).

7. A backflow prevention valve according to claim 1, wherein: the flow guiding soft ring (14) is movably sleeved on the inner side of the pipe body (1).