Wafer check valve with limiting function

Abstract

The utility model relates to the field of wafer check valves, in particular to a wafer check valve with a limiting function, which comprises a check valve body. The check valve further comprises a valve rod, mounting blocks, inserting grooves, adjusting rods and check blocks, the valve rod is mounted at the upper position of the inner surface of the check valve body, the mounting blocks are arranged at the positions, located at the ends of the two reset springs, of the outer surface of the valve rod, and the inserting grooves are formed in the corners of the surfaces of the front side and the rear side of each mounting block. Adjusting rods are connected to the front and rear sides of the mounting block through slots; stop blocks are mounted at the ends, away from the mounting block, of the adjusting rods; the check block is arranged, the opening position can be calculated and the valve plate can be limited according to the actual flow requirements of customers, the position of the check block can be adjusted by arranging the inserting groove and the adjusting rod, and when the adjusting rod stretches out for a long distance, the opening and closing angle of the valve plate can be conveniently limited, and the overall adaptability of the limiting structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of opposite clamping check valve, especially opposite clamping check valve with limiting function. BACKGROUND

[0002] Opposite clamping check valve, also known as backflow valve or check valve, is an automatic valve, and its main function is to prevent medium backflow, thereby protecting the safe and stable operation of pipeline system and related equipment.

[0003] The existing opposite clamping check valve is installed at the outlet position of the water pump, and the water flow at the outlet is very unstable during the operation of the water pump, causing the check valve flap to keep flapping up and down in the body cavity, and the connecting parts are worn out after long-time operation. Due to the impact of water flow, the valve plate is often damaged in less than a month, and the service life is very low.

[0004] Therefore, in view of the above-mentioned problems of the existing opposite clamping check valve installed at the outlet position of the water pump, the water flow at the outlet is very unstable during the operation of the water pump, causing the check valve flap to keep flapping up and down in the body cavity, and the connecting parts are worn out after long-time operation. Due to the impact of water flow, the valve plate is often damaged in less than a month, and the service life is very low. A opposite clamping check valve with limiting function can be designed, which can calculate the opening position according to the actual flow requirement of the customer, limit the valve plate, adjust the position of the stop block through the setting of the slot and adjusting rod, and limit the opening and closing angle of the valve plate when the adjusting rod is extended for a long distance, thereby improving the overall adaptability of the limiting structure. SUMMARY

[0005] In order to overcome the problems of the existing opposite clamping check valve installed at the outlet position of the water pump, the water flow at the outlet is very unstable during the operation of the water pump, causing the check valve flap to keep flapping up and down in the body cavity, and the connecting parts are worn out after long-time operation. Due to the impact of water flow, the valve plate is often damaged in less than a month, and the service life is very low.

[0006] The technical scheme of the utility model is as follows: a opposite clamping check valve with limiting function, comprising a check valve body, a valve rod, a mounting block, a slot, an adjusting rod and a stop block, the valve rod is installed at the upper position of the inner surface of the check valve body, the mounting block is arranged at the end position of the outer surface of the valve rod, the slot is arranged at the front and rear side surface corners of the mounting block, the adjusting rod is connected to the front and rear sides of the mounting block through the slot, and the stop block is installed at the end of the adjusting rod away from the mounting block.

[0007] Preferably, by setting the stop block, the opening position can be calculated according to the actual flow requirement of the customer, the valve plate is limited, the position of the stop block can be adjusted by setting the slot and the adjusting rod, and when the adjusting rod is extended for a long distance, the opening and closing angle of the valve plate can be limited, the overall adaptability of the limiting structure is improved, and the problems that the water flow at the outlet of the water pump is very unstable during the operation of the water pump, the butterfly plate of the check valve is constantly up and down in the body cavity, the connecting parts are worn after long-time operation, the valve plate is damaged in less than a month due to the impact of water flow, and the service life is very low are solved.

[0008] Preferably, the inclined edge surfaces of the four stop blocks are provided with gaskets, and the gaskets are made of rubber.

[0009] Preferably, the side surface of the adjusting rod is provided with a plurality of adjusting holes distributed at equal intervals, and the left and right side surfaces of the mounting block are provided with positioning screws at the corner positions.

[0010] Preferably, the top surface of the mounting block is provided with a fixing bolt, and the bottom of the fixing bolt is provided with a gasket; and the mounting block is fixed to the valve rod through the fixing bolt.

[0011] Preferably, the outer surface of the valve plate connecting rod of the check valve body is provided with a bearing, and the valve plate is rotationally connected to the valve plate connecting plate through the bearing.

[0012] Preferably, the bottom surface of the check valve body is provided with a flow dividing seat, and the bottom surface of the flow dividing seat is designed in a circular arc.

[0013] Preferably, the check valve body is made of rust-proof steel, and the outer surface of the check valve body is sprayed with an epoxy protective layer.

[0014] The utility model discloses the beneficial effect:

[0015] 1、 through setting the stop block, the opening position can be calculated according to the actual flow requirement of the customer, the valve plate is limited, the position of the stop block can be adjusted by setting the slot and the adjusting rod, and when the adjusting rod is extended for a long distance, the opening and closing angle of the valve plate can be limited, the overall adaptability of the limiting structure is improved, and the problems that the water flow at the outlet of the water pump is very unstable during the operation of the water pump, the butterfly plate of the check valve is constantly up and down in the body cavity, the connecting parts are worn after long-time operation, the valve plate is damaged in less than a month due to the impact of water flow, and the service life is very low are solved. DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic diagram of a check valve with a limiting function is shown.

[0017] Figure 2 A schematic diagram of a three-dimensional structure of a valve rod of a double-clamping check valve with a limiting function is shown.

[0018] Figure 3 A schematic diagram of a three-dimensional structure of a check block of a double-clamping check valve with a limiting function is shown.

[0019] Figure 4 A schematic diagram of a three-dimensional structure of a double-clamping check valve with a limiting function is shown.

[0020] Reference signs: 1, check valve body; 2, valve rod; 3, mounting block; 4, insertion slot; 5, adjusting rod; 6, check block; 7, gasket; 8, adjusting hole; 9, positioning screw; 10, fixing bolt; 11, gasket; 12, bearing; 13, shunt seat. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and examples.

[0022] Please refer to Figures 1-4 The utility model provides a double-clamping check valve with a limiting function, which comprises a check valve body 1, a valve rod 2, a mounting block 3, an insertion slot 4, an adjusting rod 5 and a check block 6. The inner surface of the check valve body 1 is provided with the valve rod 2 at the upper position. The outer surface of the valve rod 2 is provided with the mounting block 3 at the end position of two return springs. The front and rear side surface corners of the mounting block 3 are provided with the insertion slot 4. The front and rear sides of the mounting block 3 are connected with the adjusting rod 5 through the insertion slot 4. The end of the adjusting rod 5 away from the mounting block 3 is provided with the check block 6. Through the check block 6, the opening position can be calculated according to the actual flow requirement of the customer, and the valve plate can be limited. Through the insertion slot 4 and the adjusting rod 5, the position of the check block 6 can be adjusted. When the adjusting rod 5 extends for a long distance, the opening and closing angle of the valve plate can be limited, and the overall adaptability of the limiting structure is improved.

[0023] Please refer to Figures 1-3In the embodiment, the inclined edge surfaces of the four stop blocks 6 are provided with gaskets 7 made of rubber. The gaskets 7 can play a good buffering effect when the valve plate is opened and closed and the stop blocks 6 are impacted, so as to avoid damage caused by long-term impact. The side surface of the adjusting rod 5 is provided with a plurality of adjusting holes 8 distributed at equal intervals. The left and right side surfaces of the mounting block 3 are both provided with positioning screws 9. The adjusting rod 5 is fixed to the mounting block 3 through the positioning screws 9. After the position of the stop block 6 is adjusted, the position of the adjusting rod 5 can be fixed through the positioning screws 9, so as to fix the position of the stop block 6, thereby facilitating limiting. The top surface of the mounting block 3 is provided with a fixing bolt 10. The bottom of the fixing bolt 10 is provided with a gasket 11. The mounting block 3 is fixed to the valve rod 2 through the fixing bolt 10. The position of the mounting block 3 can be fixed through the fixing bolt 10 and the gasket 11, so as to facilitate quick installation and have high stability.

[0024] Please refer to Figures 1-4 In the embodiment, the valve plate connecting rod outer surface of the check valve body 1 is provided with a bearing 12. The valve plate is rotatably connected to the valve plate connecting plate through the bearing 12. The bearing 12 can improve the flexibility of the valve plate rotation and ensure the normal operation of the check valve. The bottom surface of the check valve body 1 is provided with a shunt seat 13. The bottom surface of the shunt seat 13 is designed as a circular arc. The bottom of the shunt seat 13 is designed as a circular arc structure, which can reduce the impact of the medium on the shunt seat 13 and reduce wear. The check valve body 1 is made of rust-proof steel. The outer surface of the check valve body 1 is sprayed with an epoxy protective layer. The check valve body 1 is made of rust-proof steel, and the outer surface of the check valve body 1 is sprayed with an epoxy protective layer, which can avoid rusting of the check valve body 1 and improve its service life.

[0025] When working, the gaskets 7 can play a good buffering effect when the valve plate is opened and closed and the stop blocks 6 are impacted, so as to avoid damage caused by long-term impact. After the position of the stop block 6 is adjusted, the position of the adjusting rod 5 can be fixed through the positioning screws 9, so as to fix the position of the stop block 6, thereby facilitating limiting. The position of the mounting block 3 can be fixed through the fixing bolt 10 and the gasket 11, so as to facilitate quick installation and have high stability. The bearing 12 can improve the flexibility of the valve plate rotation and ensure the normal operation of the check valve. The bottom of the shunt seat 13 is designed as a circular arc structure, which can reduce the impact of the medium on the shunt seat 13 and reduce wear. The check valve body 1 is made of rust-proof steel, and the outer surface of the check valve body 1 is sprayed with an epoxy protective layer, which can avoid rusting of the check valve body 1 and improve its service life.

[0026] Through the above steps, by setting the stop block 6, the opening position can be calculated according to the actual flow requirement of the customer, the valve plate is limited, the slot 4 and the adjusting rod 5 are set, the position of the stop block 6 can be adjusted, the adjusting rod 5 is stretched for a long distance, so that the opening and closing angle of the valve plate can be limited, the overall adaptability of the limiting structure is improved, so as to solve the problem that when the existing clamp check valve is installed at the outlet position of the water pump, the water flow at the outlet is very unstable during the operation of the water pump, the check valve butterfly plate keeps flapping up and down in the body cavity, the connecting parts are worn out after long time operation, the valve plate is often damaged within one month due to the impact of water flow, and the service life is very low.

Claims

1. A pair of clamping check valve with limiting function, comprising a check valve body (1); characterized in that: Also include the valve stem (2), mounting block (3), slot (4), adjusting rod (5) and stop block (6), check valve body (1) is installed on the inner surface of the valve stem (2) of the upper position, the outer surface of the valve stem (2) is located in the end position of two reset springs are provided with mounting block (3), the front and rear surface edge position of mounting block (3) is provided with slot (4), the front and rear sides of mounting block (3) are connected with adjusting rod (5) through slot (4), the end of adjusting rod (5) away from mounting block (3) is provided with stop block (6).

2. The pair of clamping check valves with a limiting function according to claim 1, characterized in that: The bevel surface of the four stop blocks (6) is provided with a gasket (7), and the gasket (7) is made of rubber material.

3. The double check valve with a limiting function according to claim 1, characterized in that: The side surface of the adjusting rod (5) is provided with a plurality of adjusting holes (8) distributed at equal intervals, the left and right side surface edge positions of the mounting block (3) are provided with positioning screws (9), and the adjusting rod (5) is fixed with the mounting block (3) through the positioning screws (9).

4. The double check valve with a limiting function according to claim 1, characterized in that: The top surface of the mounting block (3) is provided with a fixing bolt (10), the bottom of the fixing bolt (10) is provided with a gasket (11), and the mounting block (3) is fixed with the valve stem (2) through the fixing bolt (10).

5. The dual check valve with a limiting function according to claim 1, characterized in that: The outer surface of the valve plate connecting rod of the check valve body (1) is provided with a bearing (12), and the valve plate is rotatably connected with the valve plate connecting plate through the bearing (12).

6. The dual check valve with a limiting function according to claim 1, characterized in that: The bottom surface of the check valve body (1) is provided with a shunt seat (13), and the bottom surface of the shunt seat (13) is designed as a circular arc.

7. The dual check valve with a limiting function according to claim 1, characterized in that: The check valve body (1) is made of rust-proof steel, and the outer surface of the check valve body (1) is sprayed with an epoxy protective layer.

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