Check valve and water supply and heating equipment using same

Abstract

The utility model discloses a check valve and water supply heating equipment using the same, which comprises a valve body sleeve, and further comprises a water blocking assembly, the water blocking assembly comprises a sealing plate arranged in an inner cavity of the valve body sleeve, a sealing part is arranged on the outer side of the sealing plate, a positioning column is arranged on one side of the sealing plate, a limiting part is arranged at one end of the valve body sleeve, and the limiting part is arranged on the sealing plate. The outer side of the positioning column is sleeved with a conical spring. The locking assembly comprises a locking bolt, the end of the locking bolt is sequentially connected to the side of the sealing plate and one end of the positioning column in a penetrating and inserting mode, and a springback part is arranged on the outer side of the locking bolt; the locking assembly is arranged at the connecting position of the sealing plate and the positioning column, the positioning column and the sealing plate are locked through the locking bolt in the locking assembly, and the springback part arranged on the outer side of the locking bolt can increase friction force at the threaded meshing position of the locking bolt and the positioning column. Therefore, the possibility that the thread meshing position is loosened due to the fact that the locking bolt is impacted and vibrated by pipeline water flow is reduced.

Description

Technical Field

[0001] The utility model relates to the field of check valve equipment, in particular to a check valve and water supply and heating equipment using the check valve. Background Art

[0002] In water supply and heating equipment, the head loss in long-distance hot water pipes leads to unstable water pressure at the end of the heating pipe network. Heating pressure stabilizing equipment is needed to stabilize the water pressure in the pipes. The check valve is a key component for controlling the unidirectional flow of the fluid medium. It is located at the output end of the heating pressure stabilizing equipment to prevent the fluid from flowing back and affecting the stable operation of the water supply and heating system.

[0003] However, in actual use, the locking bolts in the check valve often become loose due to the impact and vibration of the water flow in the pipeline, causing the connection between the sealing plate and the valve body sleeve to become loose, which will affect the normal closing function of the valve, causing leakage of hot water medium and affecting the pressure of the heating system. Therefore, in response to the shortcomings of the existing technology, the utility model provides a check valve and water supply and heating equipment using the valve. Utility Model Content

[0004] The purpose of the present utility model is to provide a check valve and water supply and heating equipment using the valve, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a check valve, comprising a valve body sleeve, and further comprising:

[0006] A water-blocking assembly, which is used for one-way water flow, comprises a sealing plate disposed in the inner cavity of the valve body sleeve, a sealing portion for preventing water leakage is disposed on the outer side of the sealing plate, a positioning post is disposed on one side of the sealing plate, a limiting portion for limiting the movement of the positioning post is disposed at one end of the valve body sleeve, and a conical spring is sleeved on the outer side of the positioning post for resetting the sealing plate;

[0007] A locking assembly is used to lock the connection between the sealing plate and the positioning column. The locking assembly includes a locking bolt, the ends of which are sequentially inserted and connected to the side of the sealing plate and one end of the positioning column. A rebound portion is provided on the outer side of the locking bolt to prevent the locking bolt from loosening.

[0008] Preferably, the rebound portion includes a compression spring sleeved on the outside of the locking bolt, and a compression ring for squeezing the compression spring is provided on the outside of the locking bolt.

[0009] Preferably, a water-blocking ring is provided on the outer side of the locking bolt and on the side of the pressure ring away from the compression spring, and the water-blocking ring is used to prevent water from entering the interlaced portion of the locking bolt and the sealing plate.

[0010] Preferably, the sealing portion includes a sealing ring sleeved on the outside of the sealing plate, and the sealing ring is used to fill the gap between the sealing plate and the inner wall of the valve body sleeve.

[0011] Preferably, the limiting portion includes a positioning ring sleeved on the outside of the positioning column, a fixing rod is arranged around the outside of the positioning ring, and the end of the fixing rod is fixedly connected to the inner wall of the valve body sleeve.

[0012] Preferably, a limiting protrusion is provided around the outer side of the positioning column, and the limiting protrusion is used to prevent the positioning column from rotating.

[0013] A water supply and heating equipment using the valve adopts the above-mentioned check valve, including a flow regulator, the output end of the flow regulator is provided with a water inlet connecting pipe, the output end of the water inlet connecting pipe is provided with a water pump, the output end of the water pump is provided with a flexible joint, the output end of the flexible joint is fixedly connected to the water inlet end of the valve body sleeve, the water outlet end of the valve body sleeve is provided with a butterfly valve, and the output end of the butterfly valve is provided with a water outlet connecting pipe.

[0014] Technical effects and advantages of this utility model:

[0015] The utility model provides a locking assembly at the connection between the sealing plate and the positioning column, and utilizes the locking bolt in the locking assembly to lock the positioning column and the sealing plate, wherein the rebound portion provided on the outer side of the locking bolt can increase the friction force at the thread engagement between the locking bolt and the positioning column, thereby reducing the possibility that the thread engagement of the locking bolt in the stop valve will loosen due to the impact and vibration of the pipeline water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the utility model as a whole.

[0017] Figure 2 This is one of the structural diagrams of the check valve of the present utility model.

[0018] Figure 3 This is the second structural diagram of the check valve of the utility model.

[0019] Figure 4 It is a cross-sectional view of the check valve of the present utility model.

[0020] In the figure: 1. Valve body sleeve; 10. Butterfly valve; 11. Water outlet connecting pipe; 2. Sealing plate; 201. Sealing ring; 3. Positioning column; 301. Conical spring; 4. Positioning ring; 401. Fixing rod; 5. Locking assembly; 501. Locking bolt; 502. Pressure ring; 503. Compression spring; 504. Water barrier; 6. Flow regulator; 7. Water inlet connecting pipe; 8. Water pump; 9. Flexible joint. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-4 A check valve shown includes a valve body sleeve 1, a water blocking component and a locking component 5;

[0023] Specifically, the water blocking assembly is used for one-way flow of water. The water blocking assembly includes a sealing plate 2 arranged in the inner cavity of the valve body sleeve 1. A sealing portion for preventing water leakage is provided on the outer side of the sealing plate 2.

[0024] It should be noted that the sealing portion includes a sealing ring 201 sleeved on the outside of the sealing plate 2, and the sealing ring 201 is used to fill the gap between the sealing plate 2 and the inner wall of the valve body sleeve 1;

[0025] Specifically, an annular groove for the sealing ring 201 to be inserted is opened on the side of the sealing plate 2. The sealing ring 201 is made of rubber material and is filled in the contact area between the sealing plate 2 and the valve body sleeve 1.

[0026] A positioning post 3 is provided on one side of the sealing plate 2, and a limit portion for limiting the movement of the positioning post 3 is provided on one end of the valve body sleeve 1. A conical spring 301 for resetting the sealing plate 2 is provided on the outer side of the positioning post 3.

[0027] Specifically, the limiting portion includes a positioning ring 4 sleeved on the outside of the positioning column 3, and a fixing rod 401 is arranged around the outside of the positioning ring 4. The end of the fixing rod 401 is fixedly connected to the inner wall of the valve body sleeve 1;

[0028] It should be noted that the conical spring 301 is arranged on the opposite side of the sealing plate 2 and the positioning ring 4, and the two ends of the fixing rod 401 are respectively welded to the positioning ring 4 and the inner wall of the valve body sleeve 1. A limiting protrusion is provided around the outer side of the positioning column 3 to prevent the positioning column 3 from rotating. The positioning column 3 can be inserted and moved in the middle of the positioning ring 4.

[0029] Specifically, the locking assembly 5 is used to lock the connection between the sealing plate 2 and the positioning column 3. The locking assembly 5 includes a locking bolt 501. The ends of the locking bolt 501 are sequentially inserted and connected to the side of the sealing plate 2 and one end of the positioning column 3.

[0030] It should be noted that one end of the positioning column 3 is provided with a threaded groove for the locking bolt 501 to be inserted, and the outer side of the locking bolt 501 is provided with a rebound portion for preventing the locking bolt 501 from loosening;

[0031] Specifically, the rebound portion includes a compression spring 503 sleeved on the outside of the locking bolt 501, and a pressure ring 502 for squeezing the compression spring 503 is provided on the outside of the locking bolt 501;

[0032] It should be noted that the pressure ring 502 is fixed to the outer side of the locking bolt 501 by welding. A water stop 504 is provided on the outer side of the locking bolt 501 and on the side of the pressure ring 502 away from the compression spring 503. The water stop 504 is used to prevent water from entering the intersection of the locking bolt 501 and the sealing plate 2.

[0033] Specifically, after the locking bolt 501 is tightened, the pressure ring 502 squeezes the compression spring 503, and the compression spring 503 applies thrust to the locking bolt 501, so that the thread of the locking bolt 501 is in close contact with the thread of the thread groove, thereby increasing the friction force at the thread engagement.

[0034] A water supply and heating device using the valve, comprising the above-mentioned check valve, including a flow regulator 6, an output end of the flow regulator 6 is provided with a water inlet connecting pipe 7, and an output end of the water inlet connecting pipe 7 is provided with a water pump 8;

[0035] The output end of the water pump 8 is provided with a flexible joint 9, which is fixedly connected to the water inlet end of the valve body sleeve 1. The water outlet end of the valve body sleeve 1 is provided with a butterfly valve 10, and the output end of the butterfly valve 10 is provided with a water outlet connecting pipe 11;

[0036] It should be noted that the water pump 8 is used to increase the water pressure in the heating pipe and play a role in compensating and stabilizing the water pressure at the end of the pipe. The water outlet end of the valve body sleeve 1 is welded to the pipe, and the water inlet end of the valve body sleeve 1 is welded to the output end of the flexible joint 9. The sealing plate 2 is located at the water inlet end of the valve body sleeve 1.

[0037] During actual use, a locking assembly 5 is provided at the connection between the sealing plate 2 and the positioning column 3, and the locking bolt 501 in the locking assembly 5 is used to lock the positioning column 3 and the sealing plate 2. The rebound portion provided on the outside of the locking bolt 501 can increase the friction force at the threaded engagement between the locking bolt 501 and the positioning column 3, thereby reducing the possibility of the locking bolt 501 in the stop valve being loosened due to the impact vibration of the pipeline water flow.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A check valve, comprising a valve body sleeve (1), characterized in that: Also includes: A water-blocking assembly, the water-blocking assembly is used for one-way flow of water, the water-blocking assembly comprises a sealing plate (2) arranged in the inner cavity of a valve body sleeve (1), a sealing portion for preventing water leakage is arranged on the outer side of the sealing plate (2), a positioning column (3) is arranged on one side of the sealing plate (2), a limiting portion for limiting the movement of the positioning column (3) is arranged on one end of the valve body sleeve (1), and a conical spring (301) for resetting the sealing plate (2) is sleeved on the outer side of the positioning column (3); A locking assembly (5) is used for locking the connection between the sealing plate (2) and the positioning column (3), and the locking assembly (5) includes a locking bolt (501), the ends of which are sequentially inserted and connected to the side of the sealing plate (2) and one end of the positioning column (3), and a rebound portion is provided on the outer side of the locking bolt (501) for preventing the locking bolt (501) from loosening.

2. A check valve according to claim 1, characterized in that: The rebound portion includes a compression spring (503) sleeved on the outside of the locking bolt (501), and a pressure ring (502) for squeezing the compression spring (503) is provided on the outside of the locking bolt (501).

3. A check valve according to claim 2, characterized in that: A water stop ring (504) is provided on the outside of the locking bolt (501) and on the side of the pressure ring (502) away from the compression spring (503). The water stop ring (504) is used to prevent water from entering the insertion point between the locking bolt (501) and the sealing plate (2).

4. A check valve according to claim 1, characterized in that: The sealing portion comprises a sealing ring (201) sleeved on the outside of the sealing plate (2), and the sealing ring (201) is used to fill the gap between the sealing plate (2) and the inner wall of the valve body sleeve (1).

5. A check valve according to claim 1, characterized in that: The limiting portion comprises a positioning ring (4) sleeved on the outside of the positioning column (3), a fixing rod (401) is arranged around the outside of the positioning ring (4), and the end of the fixing rod (401) is fixedly connected to the inner wall of the valve body sleeve (1).

6. A check valve according to claim 5, characterized in that: A limiting protrusion is provided around the outer side of the positioning column (3), and the limiting protrusion is used to prevent the positioning column (3) from rotating.

7. A water supply and heating equipment using the valve, comprising a check valve according to any one of claims 1 to 6, including a flow regulator (6), the output end of the flow regulator (6) is provided with a water inlet connecting pipe (7), the output end of the water inlet connecting pipe (7) is provided with a water pump (8), the output end of the water pump (8) is provided with a flexible joint (9), the output end of the flexible joint (9) is fixedly connected to the water inlet end of the valve body sleeve (1), the water outlet end of the valve body sleeve (1) is provided with a butterfly valve (10), and the output end of the butterfly valve (10) is provided with a water outlet connecting pipe (11).

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