CN220354561U - Reverse water-proof turning plate type check valve - Google Patents

Abstract

The utility model relates to the technical field of check valves, in particular to an anti-water reversing flap type check valve which comprises a shell, wherein a sealing bearing is fixedly embedded in the shell, a valve rod is in interference fit with the sealing bearing, a valve plate which is tightly attached to the shell is fixedly sleeved on the valve rod, a reverse stop block which is in contact with the valve plate is fixedly arranged on the inner wall of the shell, a motor is fixedly arranged on the shell, and a rotating shaft of the motor is fixedly connected with the valve rod through a coupler. According to the utility model, the valve rod can drive the turning plate of the valve plate to rotate through the rotating shaft of the motor, so that the valve body is opened and closed, the valve plate can be ensured to be positioned stably after being opened through the engagement of the clamping teeth and the gears, and the valve plate can be stopped stably when countercurrent occurs in the valve body through the reverse stop block structure, so that the reverse water prevention effect is realized when liquid is conveyed.

Description

Reverse water-proof turning plate type check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to an anti-backflow flap type check valve.

Background

The working principle of the check valve is that the check valve opening and closing part automatically opens or closes by the medium flow and force so as to prevent the valve of the medium backflow from being called as the check valve.

The check valve belongs to automatic valves, and is mainly used for a pipeline in which a medium flows unidirectionally, and only allows the medium to flow in one direction so as to prevent accidents.

The check valve is also called as one-way valve or check valve, the bottom valve of water pump water absorption gate also belongs to check valve class, and the check valve is the valve that can prevent fluid refluence automatically, and the valve clack of check valve opens under the fluid pressure effect, and fluid flows from the inlet side to the outlet side, and when the inlet side pressure is less than the outlet side, the valve clack is closed under the effect of factors such as fluid pressure difference, self gravity in order to prevent fluid refluence.

When the check valve is closed, water hammer pressure can be generated in the pipeline, and damage to the valve, the pipeline or equipment can be caused in severe cases, particularly for a large-mouth pipeline or a high-pressure pipeline, so that high attention should be paid to a user selecting the check valve. The check valve is not subjected to weight in the pipeline, and the large check valve is independently supported so as not to be influenced by the pressure generated by the pipe system.

At present, when the flap valve is used, the most common problem is the countercurrent condition, so that the valve plate which rotates forward can be reversely rotated, and backflow water is caused, and the flap part of the flap valve is required to be subjected to backstop protection aiming at the countercurrent condition, so that the water backflow prevention capability of the flap valve is improved.

Disclosure of Invention

The utility model aims to provide a reverse water prevention flap check valve, which aims to solve the problem of improving the reverse water prevention of a flap valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a prevent reverse water flap check valve, includes the casing, fixed embedding has sealed bearing on the casing, interference fit has the valve rod on the sealed bearing, fixed sleeve has hugged closely the valve plate that sets up with the casing on the valve rod, be fixed with the backstop piece that sets up with the valve plate contact on the inner wall of casing, be fixed with the motor on the casing, the pivot and the valve rod of motor pass through the shaft coupling fixedly.

Preferably, a cylinder body is fixed on the shell, and a latch is fixed on a piston rod of the cylinder body.

Preferably, the valve rod is fixedly sleeved with a gear, and the gear is meshed with the latch.

Preferably, the shell is covered with a cover body, and the cover body is made of transparent plastic materials.

Preferably, a plate frame is sleeved in the shell in a sliding way, and a filter screen is fixedly embedded in the plate frame.

Preferably, a limiting block is fixed on the inner wall of the shell, and the plate frame is in contact and cling to the limiting block.

Preferably, the plate frame and the inner wall of the shell are fixed by adopting a threaded knob.

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

1. according to the utility model, the valve rod can drive the turning plate of the valve plate to rotate through the rotating shaft of the motor, so that the valve body can be opened and closed, and the valve plate can be stably positioned after being opened through meshing of the latch and the gear.

2. The utility model can realize the reverse flow stabilization of the valve plate when the reverse flow occurs in the valve body through the reverse flow block structure, thereby realizing the effect of preventing reverse flow when liquid is conveyed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the front mounting of a valve stem of the present utility model;

FIG. 3 is a schematic view of the internal structure of the valve body of the present utility model;

fig. 4 is an enlarged schematic view of the utility model at a.

In the figure: 1. a housing; 11. sealing the bearing; 12. a valve stem; 13. a valve plate; 14. a non-return block; 15. a motor; 2. a cylinder; 21. latch teeth; 22. a gear; 23. a cover body; 3. a plate frame; 31. a filter screen; 32. a limiting block; 33. a threaded knob.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example I

Referring to fig. 1-4, an anti-water-reversing flap check valve comprises a housing 1, a sealing bearing 11 is fixedly embedded in the housing 1, a valve rod 12 is in interference fit with the sealing bearing 11, a valve plate 13 which is tightly attached to the housing 1 is fixedly sleeved on the valve rod 12, a reverse stop block 14 which is in contact with the valve plate 13 is fixedly arranged on the inner wall of the housing 1, a motor 15 is fixedly arranged on the housing 1, and a rotating shaft of the motor 15 is fixed with the valve rod 12 through a coupling.

The motor 15 is of a servo type, is powered on by being plugged with an indoor 220V power strip through a wire plug, and is externally connected with a forward and reverse switch through a wire, and the model of the forward and reverse switch is HY2-8.

Further, a cylinder body 2 is fixed on the shell 1, a latch 21 is fixed on a piston rod of the cylinder body 2, the cylinder body 2 is a servo electric cylinder, and is a modularized product designed by integrating a servo motor and a screw rod, the rotary motion of the servo motor is converted into linear motion, and meanwhile, the optimal advantage of the servo motor, namely accurate rotating speed control, accurate torque control, is converted into accurate speed control, accurate position control and accurate thrust control.

Further, a gear 22 is fixedly sleeved on the valve rod 12, and the gear 22 is meshed with the latch 21.

Further, the casing 1 is covered with a cover body 23, and the cover body 23 is made of transparent plastic material, so that the engagement condition of the latch 21 and the gear 22 can be observed.

Further, the inside of the shell 1 is slidably sleeved with a plate frame 3, a filter screen 31 is fixedly embedded in the plate frame 3, and the filter screen 31 is made of an aluminum alloy wire mesh material and can block and filter peculiar smell or large impurities.

Further, a limiting block 32 is fixed on the inner wall of the shell 1, the plate frame 3 is in contact and close contact with the limiting block 32, and the position location of the plate frame 3 and the shell 1 in deep installation can be realized.

Further, the inner wall of the plate frame 3 and the inner wall of the shell 1 are fixed by adopting a threaded knob 33, a threaded ring is fixed on the plate frame 3, a threaded groove is formed in the inner wall of the shell 1, and the threaded knob 33 is in threaded butt joint with the threaded ring and the threaded groove respectively.

When the embodiment is used, the following steps are adopted: when the valve plate 13 needs to rotate, the piston rod of the cylinder body 2 is retracted firstly to separate the latch 21 from the gear 22, then the power supply of the motor 15 is connected, the motor 15 is operated through the forward and reverse switch, so that the motor 15 rotates forward or reversely, the valve plate 13 can be opened and closed relative to the shell 1, and after the valve plate 13 is overturned, the piston rod of the cylinder body 2 extends to enable the latch 21 to be meshed with the gear 22, so that the position of the valve plate 13 can be fixed.

When the valve plate 13 is closed and then is tightly attached to the shell 1 through the check block 14, when the valve body is required to be additionally filtered, the plate frame 3 with the filter screen 31 is plugged into the shell 1, the limiting block 32 is used for limiting the position of the plate frame 3, the threaded knob 33 is respectively in threaded butt joint with the threaded ring and the threaded groove, and the position of the plate frame 3 in the shell 1 can be fixed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (7)

1. The utility model provides a prevent reverse water flap check valve, includes casing (1), its characterized in that: the novel valve is characterized in that a sealing bearing (11) is fixedly embedded in the shell (1), a valve rod (12) is arranged on the sealing bearing (11) in an interference fit mode, a valve plate (13) which is tightly attached to the shell (1) is fixedly sleeved on the valve rod (12), a non-return block (14) which is in contact with the valve plate (13) is fixedly arranged on the inner wall of the shell (1), a motor (15) is fixedly arranged on the shell (1), and a rotating shaft of the motor (15) is fixed with the valve rod (12) through a coupler.

2. The anti-water back flap check valve according to claim 1, wherein: the shell (1) is fixedly provided with a cylinder body (2), and a piston rod of the cylinder body (2) is fixedly provided with a latch (21).

3. The anti-water back flap check valve according to claim 2, wherein: the valve rod (12) is fixedly sleeved with a gear (22), and the gear (22) is meshed with the latch (21).

4. A water-reversing-preventing flap check valve according to claim 3, characterized in that: the shell (1) is covered with a cover body (23), and the cover body (23) is made of transparent plastic materials.

5. The anti-water back flap check valve according to claim 1, wherein: the shell (1) is sleeved with a plate frame (3) in a sliding mode, and a filter screen (31) is fixedly embedded in the plate frame (3).

6. The water-reversing-preventing flap check valve according to claim 5, wherein: a limiting block (32) is fixed on the inner wall of the shell (1), and the plate frame (3) is in contact and close contact with the limiting block (32).

7. The water-reversing-preventing flap check valve according to claim 6, wherein: the plate frame (3) is fixed with the inner wall of the shell (1) by adopting a threaded knob (33).