CN214618014U

CN214618014U - Check valve

Info

Publication number: CN214618014U
Application number: CN202120613953.0U
Authority: CN
Inventors: 高旺; 贾瑞辛; 李志军; 张新龙; 潘建峰; 李智
Original assignee: China Shenhua Energy Co Ltd
Current assignee: China Shenhua Energy Co Ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-11-05
Anticipated expiration: 2031-03-25

Abstract

The utility model discloses a check valve, check valve includes: the valve comprises a valve body, a valve cavity is arranged in the valve body, the valve body comprises a flow inlet pipe, a flow outlet pipe and a return pipe which are arranged in sequence, and the three are communicated with the valve cavity; the turnover baffle is rotatably connected in the valve cavity and used for cutting off the drainage pipe and the valve cavity or cutting off the inflow pipe and the valve cavity. The utility model discloses a check valve, which solves the problems of the prior check valve that the leakage flow and the check effect are not ideal.

Description

Check valve

Technical Field

The utility model relates to a pipeline valve technical field, more specifically relates to a check valve.

Background

The main pollutants generated in the operation process of the coal preparation plant comprise coal slime, coal gangue and coal slime water, the coal slime water has great harm to the environment, the coal slime water contains a plurality of pollutants and is discharged into the external environment, and certain pollution is caused to surface water and underground water, and the coal slime water is difficult to treat.

The coal preparation plant coal slime water is controlled to overflow, the coal slime water is prevented from leaking, overflowing and dripping, and the problem to be solved at present is solved urgently, and especially the coal slime water pipeline which is far away outdoors and has a large angle needs to be focused. Due to the characteristic that the slime water is easy to deposit, when the pump stops running, redundant slime water remains in the pipeline, if the slime water in the pipeline is not removed, the pipeline blocking phenomenon is likely to occur, and the condition that the slime water pollutes the environment is difficult to avoid in the process of dredging the pipeline.

Therefore, a check valve is required to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a check valve to solve the problem of unsatisfactory leakage and check effects of the conventional check valve.

Based on above-mentioned purpose the utility model provides a pair of check valve, include:

the valve comprises a valve body, a valve cavity is arranged in the valve body, the valve body comprises a flow inlet pipe, a flow outlet pipe and a return pipe which are arranged in sequence, and the three are communicated with the valve cavity;

the turnover baffle is rotatably connected in the valve cavity and used for cutting off the drainage pipe and the valve cavity or cutting off the inflow pipe and the valve cavity.

Preferably, a rotating shaft is arranged on the edge of one side, close to the flow inlet pipe, of the drain pipe, and the rotating shaft is connected with the turning baffle and drives the turning baffle to rotate in the valve cavity in a reciprocating mode.

Preferably, at least one end of the rotating shaft extends to the outside of the valve body and is connected with a driving mechanism, and the driving mechanism is used for driving the rotating shaft to rotate in a reciprocating manner.

Preferably, a first retaining ring is arranged on the contact surface of the drain pipe and the valve cavity, and the overturning baffle plate can abut against the first retaining ring.

Preferably, a second retaining ring is arranged in the valve cavity on one side of the flow discharging pipe close to the flow inlet pipe, and the overturning baffle plate can abut against the second retaining ring.

Preferably, the turning baffle is made of wear-resistant materials.

Preferably, a side surface of the flap plate facing the first retainer ring and/or the second retainer ring is provided with a sealing layer.

Preferably, the sealing layer is made of a polyurethane material.

Preferably, the turning baffle comprises a wedge-shaped body, and the thickness of the wedge-shaped body is gradually reduced from far to near towards the rotating shaft.

In addition, preferably, a wedge surface of the wedge is disposed toward the first retainer ring.

From the foregoing, the check valve provided by the present invention has the following advantages compared with the prior art: by adopting the check valve, the turning baffle plate can be automatically switched between a first position and a second position in the valve cavity, and when the turning baffle plate cuts off the communication between the discharge pipe and the valve cavity, the slime water can normally pass through the valve body without leakage; when the baffle plate turning stage inflow pipe is communicated with the valve cavity, the returned slime water is discharged through the discharge pipe, and blockage caused by accumulation in a pipeline is avoided.

Drawings

The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic view of a check valve used in an embodiment of the present invention.

Fig. 2 is a schematic view of a flap of the check valve shown in fig. 1.

Wherein the reference numbers:

1. turning over the baffle; 2. a valve body; 21. a bleeder tube; 22. a return pipe; 23. an inlet pipe; 3. a rotating shaft; 4. a baffle ring structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings. The terms "inner" and "outer" are used to refer to directions toward and away from, respectively, the geometric center of a particular component.

Fig. 1 is a schematic view of a check valve used in an embodiment of the present invention. As shown in fig. 1, the check valve includes a valve body 2 and a flap plate 1.

A valve cavity is arranged in the valve body 2, the valve body 2 comprises an inlet pipe 23, a discharge pipe 21 and a return pipe 22 which are arranged in sequence, and the three are communicated with the valve cavity;

the turnover baffle plate 1 is rotatably connected in the valve cavity, and the turnover baffle plate 1 is used for cutting off the communication between the drainage pipe 21 and the valve cavity or cutting off the communication between the inflow pipe 23 and the valve cavity.

The check valve is arranged at the intersection of the slime water transportation path and the drainage path, the drainage pipe 21 of the valve body 2 is communicated with the drainage pipe 21, the inflow pipe 23 and the return pipe 22 are both connected to the slime water transportation pipeline, the inflow pipe 23 is communicated with the outlet end of the slime water transportation pipeline, and the return pipe 22 is communicated with the inlet end of the slime water transportation pipeline. The overturning baffle plate 1 is rotatably connected in the valve cavity, so that the overturning baffle plate 1 can be switched between a first position and a second position in the valve cavity, and when the overturning baffle plate 1 is positioned at the first position, the overturning baffle plate is used for intercepting the communication between the discharge pipe 21 and the valve cavity; when the baffle plate 1 is positioned at the second position, the baffle plate is used for cutting off the communication between the inflow pipe 23 and the valve cavity.

The coal slime water enters the valve cavity from the outlet end of the coal slime water transportation pipeline below the valve body 2 through the inflow pipe 23 due to the lifting force provided by the pump, the fluid pushes the turning baffle plate 1 at the second position to rotate to the first position, the cut-off drainage pipe 21 is communicated with the valve cavity, and the fluid enters the coal slime water transportation pipeline above the valve body 2 again through the inlet end of the coal slime water transportation pipeline from the return pipe 22 to be transported continuously; when the pump is closed, the fluid loses power, the turning baffle plate 1 positioned at the first position resets and rotates to the second position due to the self gravity, the cut-off inflow pipe 23 is communicated with the valve cavity, the fluid in the coal slime conveying pipeline above the valve body 2 loses lifting force to form backflow coal slime, the backflow coal slime falls back into the valve cavity again and flows out of the flow discharge pipe 21, and the effects of non-return and flow discharge are achieved.

By adopting the check valve, the turning baffle plate 1 can be automatically switched between a first position and a second position in the valve cavity, when the turning baffle plate 1 cuts off the communication between the discharge pipe 21 and the valve cavity, the slime water can normally pass through the valve body 2 and cannot leak; when the baffle plate 1 is turned over, the inflow pipe 23 is communicated with the valve cavity, and the returned slime water is discharged through the discharge pipe 21, so that the blockage caused by accumulation in the pipeline is avoided.

In the embodiment, the valve body 2 is of a T-shaped structure or an approximate T-shaped structure, the inflow pipe 23 and the return pipe 22 are oppositely arranged along the height direction of the slime water transportation pipeline, and the drainage pipe 21 is arranged between the inflow pipe 23 and the return pipe 22. The diameter of the valve cavity is consistent from the inlet pipe 23 to the return pipe 22, and is consistent with the diameter of the drain pipe 21. The inlet flow direction provided by the inlet pipe 23 is opposite to the return flow direction provided by the return pipe 22, and is perpendicular to the drain flow direction provided by the drain pipe 21. By limiting the fluid flow shape, the rotation angle of the flap 1 can be controlled to be about 90 degrees, namely, the flap 1 can be switched between a horizontal state and a vertical state, so that the control difficulty is reduced.

In the embodiment, the flap 1 is rotatably connected in the valve cavity, for example, the flap 1 is hinged with the wall of the valve cavity, and the flap 1 is adjusted in position in the valve cavity by changing the rotation angle.

Preferably, a rotating shaft 3 is arranged on one side edge of the discharge pipe 21 close to the inlet pipe 23, and the rotating shaft 3 is connected with the flap plate 1 and drives the flap plate 1 to rotate in the valve cavity in a reciprocating manner. The rotation range of the rotating shaft 3 can limit the rotation range of the flap 1, and the flap 1 rotates repeatedly between a first position and a second position by taking the rotating shaft 3 as an axis. By adopting the check valve, the structure is simple, the flow distribution, check and discharge can be automatically realized, and the operation effect is stable.

In this embodiment, when the flap 1 is located at the first position, the rotating shaft 3 drives the flap 1 to rotate to be in a vertical state; when the turning baffle plate 1 is located at the second position, the rotating shaft 3 drives the turning baffle plate 1 to rotate to be in a horizontal state.

Preferably, at least one end of the rotating shaft 3 extends to the outside of the valve body 2, and a driving mechanism is connected to the rotating shaft 3 for driving the rotating shaft 3 to rotate in a reciprocating manner. The rotating shaft 3 can be arranged in the valve body 2 or at least one end of the rotating shaft penetrates through the valve body 2, one end of the rotating shaft 3 extends out of the valve body 2 and is connected with the driving mechanism, the driving mechanism can drive the rotating shaft 3 to rotate in a reciprocating mode, the rotating shaft 3 can be driven to drive the overturning baffle 1 to switch between the first position and the second position, the overturning baffle 1 can be driven to stay at any position between the first position and the second position to adjust the opening and closing degree of the overturning baffle 1, and therefore the shunting control effect is achieved.

Preferably, a first stop ring is arranged at the contact surface of the discharge pipe 21 and the valve cavity, and the flap plate 1 can abut against the first stop ring. When the turnover baffle plate 1 rotates to the first position, the turnover baffle plate can be abutted against the first retaining ring, and the first retaining ring can prevent the turnover baffle plate 1 from excessively entering the drain pipe 21 to influence the automatic resetting of the turnover baffle plate 1. Through setting up first fender ring, can guarantee to turn over baffle 1 and can automatic operation effectively.

Preferably, a second retaining ring is arranged in the valve cavity on the side of the flow discharge pipe 21 close to the flow inlet pipe 23, and the overturning retaining plate 1 can abut against the second retaining ring. When the turning baffle plate 1 rotates to the second position, the turning baffle plate can be abutted against the second baffle ring, and the second baffle ring can prevent the turning baffle plate 1 from being excessively turned downwards to influence the cutting effect. Through setting up the second and keeping off the ring, can guarantee to turn over baffle 1 and can automatic operation effectively.

In this embodiment, the first retaining ring and the second retaining ring both adopt the same retaining ring structure 4, and the retaining ring structure 4 is embedded in the valve cavity, and the extending directions of the first retaining ring and the second retaining ring are perpendicular to each other. The rotating shaft 3 is arranged between the first retaining ring and the second retaining ring.

Preferably, the turning baffle 1 is made of wear-resistant materials. The turnover baffle 1 is made of wear-resistant materials, so that the service life of the turnover baffle 1 can be prolonged.

In the present embodiment, the wear resistant material includes, but is not limited to, a ceramic material.

Preferably, a side surface of the roll-over damper 1 facing the first retainer ring and/or the second retainer ring is provided with a sealing layer. The overturning baffle plate 1 is abutted with the first baffle ring and/or the second baffle ring through the sealing layer. By providing the sealing layer, the sealing property of the roll-over damper 1 in the first position or the second position can be improved.

Preferably, the sealing layer is made of polyurethane material. The sealing layer is made of polyurethane materials, so that the sealing effect of the sealing layer can be improved.

In this embodiment, the flap 1 may be entirely covered with the sealant, or may be covered with the sealant except for a surface of the flap 1 facing the first retainer ring.

Fig. 2 is a schematic view of a flap of the check valve shown in fig. 1. As shown in fig. 2, the roll-over flapper 1 comprises a wedge.

Preferably, the turning baffle 1 comprises a wedge, and the thickness of the wedge is gradually reduced from far to near towards the rotating shaft 3. The closer the wedge is to the shaft 3, the smaller the thickness, and the further away from the shaft 3, the larger the thickness. The flexibility of the baffle 1 can be improved by reducing the thickness of one side close to the rotating shaft 3; the turning baffle plate 1 is helped to rotate through self weight by increasing the thickness of the side far away from the rotating shaft 3. By adopting the shape of the turnover baffle 1, the flexibility of the turnover baffle 1 can be ensured, and the driving difficulty of the turnover baffle 1 can be reduced.

In this embodiment, the wedge is a nearly cylindrical structure, but the top surface is an inclined surface, and the rotation axis 3 is connected to the thinner side of the wedge.

Preferably, the wedge surface of the wedge is arranged towards the first catch ring. When the overturning baffle plate 1 is positioned at the first position, the wedge surface enters or abuts against the first baffle ring, and the plane arranged opposite to the wedge surface can realize the sealing function; when the overturning baffle plate 1 is located at the second position, the plane arranged opposite to the wedge surface is abutted against the second baffle ring, and the sealing effect can be realized. The wedge-shaped body is simple in structure, easy to manufacture and good in sealing effect.

The use of the non-return valve is described further below.

The check valve is arranged at the intersection of the slime water transportation path and the discharge path, the discharge pipe 21 of the valve body 2 is communicated with the discharge pipe 21, the inlet pipe 23 is communicated with the outlet end of the slime water transportation pipeline, and the return pipe 22 is communicated with the inlet end of the slime water transportation pipeline. The turnover baffle plate 1 is connected with the rotating shaft 3, the rotating shaft 3 can drive the turnover baffle plate 1 to rotate in the valve cavity in a reciprocating mode, so that the turnover baffle plate 1 can be switched between a first position and a second position in the valve cavity, and when the turnover baffle plate 1 is located at the first position, the turnover baffle plate is used for cutting off the communication between the drainage pipe 21 and the valve cavity; when the baffle plate 1 is positioned at the second position, the baffle plate is used for cutting off the communication between the inflow pipe 23 and the valve cavity.

When the rotating shaft 3 is connected with a driving mechanism, the driving mechanism can drive the overturning baffle plate 1 to rotate between a first position and a second position and stop at any angle to adjust the rotating angle of the overturning baffle plate 1; when the turning baffle plate 1 is closer to the drain pipe 21, the larger the opening and closing angle of the turning baffle plate 1 is, the larger the fluid passing flow is; when the baffle plate 1 is closer to the inflow pipe 23, the opening and closing angle of the baffle plate 1 is smaller, and the fluid passing flow rate is smaller.

From the above description and practice, it can be seen that the present invention provides a check valve, which has the following advantages over the prior art: by adopting the check valve, the turning baffle plate can be automatically switched between a first position and a second position in the valve cavity, and when the turning baffle plate cuts off the communication between the discharge pipe and the valve cavity, the slime water can normally pass through the valve body without leakage; when the baffle plate turning stage inflow pipe is communicated with the valve cavity, the returned slime water is discharged through the discharge pipe, and blockage caused by accumulation in a pipeline is avoided.

Those of ordinary skill in the art will understand that: the above description is only for the specific embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A check valve, comprising:

2. The non-return valve according to claim 1, characterized in that:

the drain pipe is close to be provided with the pivot on the inlet tube one side border, the pivot with turn over the baffle and be connected, and drive turn over the baffle and be in reciprocating rotation in the valve pocket.

3. The non-return valve according to claim 2, characterized in that:

at least one end of the rotating shaft extends to the outside of the valve body and is connected with a driving mechanism, and the driving mechanism is used for driving the rotating shaft to rotate in a reciprocating mode.

4. A non-return valve according to claim 2 or 3, characterized in that:

the contact surface between the flow discharge pipe and the valve cavity is provided with a first retaining ring, and the turning baffle plate can be abutted against the first retaining ring.

5. The non-return valve according to claim 4, characterized in that:

the side, close to the flow inlet pipe, of the flow discharge pipe is internally provided with a second retaining ring in the valve cavity, and the overturning baffle plate can be abutted against the second retaining ring.

6. The non-return valve according to claim 5, characterized in that:

the turning baffle is made of wear-resistant materials.

7. The non-return valve according to claim 6, characterized in that:

and a sealing layer is arranged on one side surface of the turning baffle plate facing the first retaining ring and/or the second retaining ring.

8. The non-return valve according to claim 7, characterized in that:

the sealing layer is made of a polyurethane material.

9. The check valve of claim 8, wherein:

the turning baffle comprises a wedge-shaped body, and the thickness of the wedge-shaped body is gradually reduced from far to near towards the rotating shaft.

10. The check valve of claim 9, wherein:

the wedge surface of the wedge body is arranged towards the first retaining ring.