Corrugated pipe stop check valve

Abstract

The utility model provides a corrugated pipe stop check valve, which relates to the technical field of stop valves and comprises a valve main body, a water inlet is arranged on one side of the valve main body, a water outlet is arranged on one side of the valve main body far away from the water inlet, a valve rod is arranged at the top of the valve main body, and a corrugated pipe is arranged at the bottom of the valve rod. A rotating wheel is arranged at the top of the valve rod, a sealing device is arranged at the bottom of the corrugated pipe, a connecting device is arranged at the top of the corrugated pipe, the sealing device comprises an arc-shaped plate, the arc-shaped plate is fixedly connected with the inner wall of the valve body, and a rubber block is fixedly connected to the bottom of the corrugated pipe. The rubber block is extruded to one side of the arc-shaped plate, then the rubber block is extruded through the connecting strip, the water inlet and the water outlet are separated through the rubber block, a good sealing effect is achieved, and abrasion of the rubber block can be reduced to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a bellows stop check valve. Background Art

[0002] The stop check valve is a multi-purpose valve that has the functions of a stop valve and a check valve. Its structure is similar to that of a stop valve, but the valve stem and the valve disc are not fixedly connected. When the valve stem descends and presses the valve disc tightly against the valve seat, it acts as a stop valve; after the valve stem rises, it acts as a check valve. The use of stop check valves can save installation costs and space on pipelines that require both stop valves (or gate valves) and check valves (such as the outlet end of a water pump), or in places where the installation position is restricted (such as ships).

[0003] The inventor has found in his daily work that the stop valve still has at least the following problems: the use of the stop check valve is to seal the connecting part by squeezing the rubber pad by the valve stem, thereby achieving the effect of closing the stop check valve. However, in actual use, due to the long-term use of the stop check valve, the rubber pad may suffer varying degrees of wear, which will affect the use of the stop check valve to a certain extent. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a bellows stop check valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bellows stop check valve, comprising a valve body, a water inlet is arranged on one side of the valve body, a water outlet is arranged on the side of the valve body away from the water inlet, a valve stem is arranged on the top of the valve body, a bellows is arranged on the bottom of the valve stem, a rotating wheel is arranged on the top of the valve stem, a sealing device is arranged on the bottom of the bellows, a connecting device is arranged on the top of the bellows, the sealing device comprises an arc plate, the arc plate is fixedly connected to the inner wall of the valve body, a rubber block is fixedly connected to the bottom of the bellows, the rubber block is slidably connected to one side of the arc plate, a connecting strip is arranged on one side of the arc plate, and the connecting strip is arranged on one side of the rubber block.

[0006] The effect achieved by the above components is: when the sealing device is used, the rubber block is squeezed to one side of the arc plate, and then the rubber block is squeezed through the connecting strip, and then the water inlet and the water outlet are separated by the rubber block, which plays a good sealing role, thus reducing the wear of the rubber block to a certain extent.

[0007] Preferably, a connecting groove is provided on one side of the arc-shaped plate, and the connecting groove and the connecting strip are arranged together.

[0008] The effect achieved by the above components is that the connecting strip can be well arranged on one side of the arc-shaped plate through the connecting groove.

[0009] Preferably, a locking groove is provided on one side of the connecting strip, a rubber ring is provided on the inner wall of the locking groove, and the rubber ring is fixedly connected to one side of the rubber block.

[0010] The effect achieved by the above components is: the rubber ring is clamped into the inside of the clamping groove, and the rubber block can be well arranged on one side of the connecting strip.

[0011] Preferably, a damping rod is fixedly connected to one side of the connecting groove, and one end of the damping rod close to the connecting groove is fixedly connected to one side of the connecting strip. A spring is sleeved on the surface of the damping rod, and one end of the spring is fixedly connected to one side of the inner wall of the connecting groove, and one end of the spring close to the damping rod is fixedly connected to one side of the connecting strip.

[0012] The effect achieved by the above components is: the connecting strip is pressed in a direction away from the connecting groove by the spring, so that the connecting strip is pressed well against one side of the rubber block.

[0013] Preferably, the connecting device comprises a connecting tube, and the connecting tube is fixedly connected to the top of the bellows.

[0014] The effect achieved by the above components is that the connecting device can be well arranged on the top of the corrugated pipe through the connecting tube.

[0015] Preferably, the inner wall of the connecting cylinder is slidably connected to the bottom of the valve stem, a sliding groove is provided on the inner wall of the connecting cylinder, a connecting block is slidably connected to the inner wall of the sliding groove, and the connecting block is fixedly connected to the bottom of the valve stem.

[0016] The effect achieved by the above components is that when the connecting device is used, the connecting block is slid into the inside of the slide groove, thereby well setting the bottom of the valve stem on the top of the bellows.

[0017] Preferably, an extrusion plate is provided on the bottom surface of the valve stem.

[0018] The effects achieved by the above components are: by squeezing the surface of the bottom of the valve stem through the extrusion plate, the connecting block is well restricted inside the slide groove, and the bellows and the bottom of the valve stem are well connected together. The reverse operation can separate the bellows and the bottom of the valve stem, and then the bellows can be replaced when the bellows is damaged, which can extend the service life of the stop check valve to a certain extent.

[0019] Preferably, a support plate is fixedly connected to the top of the corrugated tube, a bolt is threadedly inserted through one side of the support plate, and one end of the bolt is rotatably inserted into one side of the extrusion plate.

[0020] The effect achieved by the above components is that the bolt is manually rotated, so that the extrusion plate can be well squeezed onto the bottom surface of the valve stem.

[0021] In the utility model, a sealing device is provided. When the sealing device is used, the rubber block is squeezed to one side of the arc plate, and then the rubber block is squeezed through the connecting strip, and then the water inlet and the water outlet are separated by the rubber block, which plays a good sealing role and can reduce the wear of the rubber block to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model provides a three-dimensional structural diagram of a bellows stop check valve;

[0023] Figure 2 A three-dimensional structural schematic diagram of a novel curved plate proposed in the utility model;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 The utility model provides a three-dimensional structural schematic diagram of a novel extruded plate.

[0026] Legend: 1. Valve body; 2. Water inlet; 3. Water outlet; 4. Valve stem; 5. Bellows; 6. Rotating wheel; 7. Sealing device; 701. Rubber block; 702. Arc plate; 703. Rubber ring; 704. Connecting groove; 705. Damping rod; 706. Spring; 707. Connecting strip; 708. Positioning groove; 8. Connecting device; 801. Connecting cylinder; 802. Slide groove; 803. Connecting block; 804. Support plate; 805. Bolt; 806. Extrusion plate. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figure 1-4 As shown, a bellows stop check valve is provided with a water inlet 2 on one side of a valve body 1, a water outlet 3 on the side of the valve body 1 away from the water inlet 2, a valve stem 4 is provided on the top of the valve body 1, a bellows 5 is provided on the bottom of the valve stem 4, a rotating wheel 6 is provided on the top of the valve stem 4, a sealing device 7 is provided on the bottom of the bellows 5, and a connecting device 8 is provided on the top of the bellows 5. The stop check valve is a multi-purpose valve having the functions of a stop valve and a check valve. Its structure is similar to that of the stop valve, but the valve stem 4 and the valve disc are not fixedly connected. When the valve stem 4 descends and presses the valve disc against the valve seat, it acts as a stop valve; after the valve stem 4 rises, it acts as a check valve. On pipelines where both stop valves (or gate valves) and check valves need to be installed (such as the outlet end of a water pump), or in places where the installation position is restricted (such as ships), the use of stop check valves can save installation costs and space.

[0028] Reference Figure 2 and Figure 3 The sealing device 7 includes an arc plate 702, which is fixedly connected to the inner wall of the valve body 1. A rubber block 701 is fixedly connected to the bottom of the bellows 5. The rubber block 701 is slidably connected to one side of the arc plate 702. A connecting strip 707 is provided on one side of the arc plate 702. The connecting strip 707 is provided on one side of the rubber block 701. When the sealing device 7 is used, the rubber block 701 is squeezed to one side of the arc plate 702, and then the rubber block 701 is squeezed through the connecting strip 707, and then the water inlet 2 and the water outlet 3 are separated by the rubber block 701, which plays a good sealing role. This can reduce the wear of the rubber block 701 to a certain extent. A connecting groove 704 is provided on one side of the arc plate 702. The connecting groove 704 and the connecting strip 707 are arranged together. The connecting strip 707 can be well set on one side of the arc plate 702 through the connecting groove 704. A locking groove 708 is provided on one side of the connecting strip 707, and a rubber ring 703 is provided on the inner wall of the locking groove 708. The rubber ring 703 is fixedly connected to one side of the rubber block 701, and the rubber ring 703 is clamped into the inside of the locking groove 708, so that the rubber block 701 can be well set on one side of the connecting strip 707. A damping rod 705 is fixedly connected to one side of the connecting groove 704, and one end of the damping rod 705 close to the connecting groove 704 is fixedly connected to one side of the connecting strip 707. A spring 706 is sleeved on the surface of the damping rod 705, and one end of the spring 706 is fixedly connected to one side of the inner wall of the connecting groove 704, and one end of the spring 706 close to the damping rod 705 is fixedly connected to one side of the connecting strip 707. The connecting strip 707 is squeezed in a direction away from the connecting groove 704 by the spring 706, so that the connecting strip 707 is well squeezed on one side of the rubber block 701.

[0029] Reference Figure 4The connecting device 8 includes a connecting tube 801, which is fixedly connected to the top of the bellows 5. The connecting device 8 can be well set on the top of the bellows 5 through the connecting tube 801. The inner wall of the connecting tube 801 is slidably connected to the bottom of the valve stem 4. The inner wall of the connecting tube 801 is provided with a slide groove 802, and the inner wall of the slide groove 802 is slidably connected with a connecting block 803. The connecting block 803 is fixedly connected to the bottom of the valve stem 4. When using the connecting device 8, slide the connecting block 803 into the inside of the slide groove 802, so that the bottom of the valve stem 4 is well set on the top of the bellows 5. The bottom surface of the valve stem 4 is provided with an extrusion plate 806, which is squeezed on the valve stem by the extrusion plate 806. 4, thereby well limiting the connecting block 803 inside the slide groove 802, thereby well connecting the bellows 5 and the bottom of the valve stem 4 together, the reverse operation can separate the bellows 5 from the bottom of the valve stem 4, and then the bellows 5 can be replaced when the bellows 5 is damaged, which can extend the service life of the stop check valve to a certain extent, the top of the bellows 5 is fixedly connected with a support plate 804, one side of the support plate 804 is threadedly inserted with a bolt 805, one end of the bolt 805 is rotatably inserted on one side of the extrusion plate 806, and the bolt 805 is manually rotated, thereby the extrusion plate 806 can be well squeezed on the bottom surface of the valve stem 4.

[0030] Working principle: The stop check valve is a multi-purpose valve with the functions of a stop valve and a check valve. Its structure is similar to that of a stop valve, but the valve stem 4 is not fixedly connected to the valve disc. When the valve stem 4 descends and presses the valve disc against the valve seat, it acts as a stop valve; after the valve stem 4 rises, it acts as a check valve. When a stop valve (or gate valve) and a check valve need to be installed on a pipeline (such as the outlet end of a water pump) at the same time, or in a place where the installation position is restricted (such as a ship), the use of a stop check valve can save installation costs and space. When using the sealing device 7, the rubber block 701 is squeezed to one side of the arc plate 702, and the connecting strip 707 is squeezed in a direction away from the connecting groove 704 by the spring 706, so that the connecting strip 707 is squeezed on one side of the rubber block 701, and then the rubber block 701 is squeezed by the connecting strip 707, and the rubber ring 703 is clamped into the clamping groove 70 8, and then the water inlet 2 and the water outlet 3 are separated by the rubber block 701, which plays a good sealing role. This can reduce the wear of the rubber block 701 to a certain extent. When using the connecting device 8, slide the connecting block 803 into the inside of the slide groove 802, and then the bottom of the valve stem 4 is well set on the top of the bellows 5. Manually rotate the bolt 805, and then the extrusion plate 806 can be well squeezed on the bottom surface of the valve stem 4. The extrusion plate 806 is squeezed on the surface of the bottom of the valve stem 4, and then the connecting block 803 is well restricted in the inside of the slide groove 802, and then the bellows 5 and the bottom of the valve stem 4 are well connected together. The reverse operation can separate the bellows 5 from the bottom of the valve stem 4, and then the bellows 5 can be replaced when the bellows 5 is damaged. This can extend the service life of the stop check valve to a certain extent.

Claims

1. A bellows stop check valve, comprising a valve body (1), characterized in that: A water inlet (2) is provided on one side of the valve body (1), and a water outlet (3) is provided on a side of the valve body (1) away from the water inlet (2). A valve stem (4) is provided on the top of the valve body (1), and a bellows (5) is provided on the bottom of the valve stem (4). A rotating wheel (6) is provided on the top of the valve stem (4), and a sealing device (7) is provided on the bottom of the bellows (5). A connecting device (8) is provided on the top of the bellows (5). The sealing device (7) comprises an arc plate (702), and the arc plate (702) is fixedly connected to the inner wall of the valve body (1). A rubber block (701) is fixedly connected to the bottom of the bellows (5), and the rubber block (701) is slidably connected to one side of the arc plate (702). A connecting strip (707) is provided on one side of the arc plate (702), and the connecting strip (707) is provided on one side of the rubber block (701).

2. The bellows stop check valve according to claim 1, characterized in that: A connection groove (704) is provided on one side of the arc-shaped plate (702), and the connection groove (704) and the connection strip (707) are arranged together.

3. The bellows stop check valve according to claim 1, characterized in that: A locking groove (708) is provided on one side of the connecting strip (707), a rubber ring (703) is provided on the inner wall of the locking groove (708), and the rubber ring (703) is fixedly connected to one side of the rubber block (701).

4. The bellows stop check valve according to claim 2, characterized in that: A damping rod (705) is fixedly connected to one side of the connecting groove (704); one end of the damping rod (705) close to the connecting groove (704) is fixedly connected to one side of the connecting strip (707); a spring (706) is sleeved on the surface of the damping rod (705); one end of the spring (706) is fixedly connected to one side of the inner wall of the connecting groove (704); and one end of the spring (706) close to the damping rod (705) is fixedly connected to one side of the connecting strip (707).

5. The bellows stop check valve according to claim 1, characterized in that: The connecting device (8) comprises a connecting tube (801), and the connecting tube (801) is fixedly connected to the top of the bellows (5).

6. The bellows stop check valve according to claim 5, characterized in that: The inner wall of the connecting tube (801) is slidably connected to the bottom of the valve stem (4); a sliding groove (802) is provided on the inner wall of the connecting tube (801); a connecting block (803) is slidably connected to the inner wall of the sliding groove (802); and the connecting block (803) is fixedly connected to the bottom of the valve stem (4).

7. The bellows stop check valve according to claim 1, characterized in that: The bottom surface of the valve stem (4) is provided with an extrusion plate (806).

8. The bellows stop check valve according to claim 1, characterized in that: The top of the bellows (5) is fixedly connected to a support plate (804), a bolt (805) is threadedly inserted through one side of the support plate (804), and one end of the bolt (805) is rotatably inserted into one side of the extrusion plate (806).

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