Circulating water return pipeline safety valve

Abstract

The utility model discloses a circulating water return pipeline safety valve which comprises a valve body, a valve cover and a valve element, the valve cover and the valve element are fixed to the upper end of the valve body, annular blocks are fixedly arranged on the outer side of the upper end of the valve cover, adjusting plates are arranged at the lower ends of the annular blocks through first adjusting structures, penetrating holes are formed in the two sides of the upper end of the valve cover, and movable plates are fixedly arranged on the two sides of the upper end of the valve element. The movable plate extends to the outer side of the penetrating hole, an elastic structure is arranged between the movable plate and the adjusting plate, a sealing part is fixedly arranged in the outflow channel, a circulation opening is formed in the center of the sealing part, an adjusting block is arranged in the circulation opening, and an embedded groove is formed in the side, corresponding to the upper end of the sealing part, of the valve body. The upper end of the adjusting block is fixedly connected with the top plate, the top plate is located at the bottom end of the embedded groove, and one side of the top plate can move up and down through a second adjusting structure. The adjusting device is more accurate and convenient to adjust and safer to use.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, and more specifically, to a safety valve for a circulating return water pipeline. Background Art

[0002] A safety valve is a special valve in which the closing member is normally in a closed state under the action of an external force. When the pressure of the medium fluid in the equipment or pipeline rises above a specified value, the medium fluid is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. The safety valve belongs to the category of automatic valves and controls the pressure not to exceed the specified value. The safety valve for the circulating return water pipeline is mainly used in household water heaters. When using hot water, it is necessary to wait for a period of time. Therefore, it is necessary to return the cold water inside to the water heater through the return water pipe for heat preservation for the next use. The existing safety valves cannot adjust the water flow rate and the water pressure.

[0003] A safety valve for a circulating return water pipeline with the publication number of CN220416297U in the prior art, by inserting a cylindrical valve plug into the cylindrical vertical hole inside the valve core, and rotating the adjusting handwheel to move the cylindrical valve plug up and down, thereby controlling the size of the transverse hole. By controlling the size of the transverse hole, the water flow rate and water pressure can be adjusted, and the water flow can be better controlled; however, for manual adjustment, there will be a certain deviation in the moving distance of the valve plug, and the efficiency is low. In addition, when the internal water pressure is too high, it is difficult to achieve pressure relief, which is easy to cause pipeline bursting and the safety performance during use is low. Therefore, the utility model provides a safety valve for a circulating return water pipeline. Content of the Utility Model

[0004] The purpose of the utility model is to provide a safety valve for a circulating return water pipeline, which is more accurate and convenient to adjust and safer to use.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A safety valve for a circulating return water pipeline, comprising a valve body, a valve cover fixed to the upper end of the valve body, and a valve core. A valve cavity is provided inside the valve body, and the valve core is provided inside the valve cavity. An inflow channel is communicated with the lower end of the valve cavity, a pressure relief channel is communicated with one side of the valve cavity, an outflow channel is provided on one side of the inflow channel, annular blocks are fixedly provided on the outer side of the upper end of the valve cover, an adjusting plate is provided below the annular blocks through an adjusting structure one, through holes are provided on both sides of the upper end of the valve cover, moving plates are fixedly provided on both sides of the upper end of the valve core, the moving plates extend outside the through holes, an elastic structure is provided between the moving plates and the adjusting plate, a sealing part is fixedly provided inside the outflow channel, a circulation port is provided in the center of the sealing part, an adjusting block is provided inside the circulation port, an embedded groove is provided on one side of the valve body corresponding to the upper end of the sealing part, the upper end of the adjusting block is fixedly connected with a top plate, the top plate is located at the bottom end of the embedded groove, and one side of the top plate can move up and down through an adjusting structure two.

[0007] Adopting the above technical solutions, the utility model has the following advantages:

[0008] The setting of the adjusting structure one of the utility model plays a role in controlling the up and down movement of the adjusting plate, thereby realizing the extrusion of the elastic structure, so that the pressure for the valve core to move up can be changed, thereby playing a role in changing the water pressure safety value. When the pressure exceeds the safety value, the valve core can be pushed to discharge and relieve pressure through the pressure relief channel, which can effectively prevent the pipeline from bursting, making the use safer, and the accuracy of electric adjustment is higher; the setting of the adjusting structure two of the utility model plays a role in controlling the up and down movement of the top plate, thereby driving the adjusting block to move up and down, so that the size of the circulation port can be changed, thereby changing the flow rate and speed of the water flow, and the accuracy of electric adjustment is higher.

[0009] Further, a ring is fixedly provided on the upper end of the valve cover on one side of the moving plate through a plurality of bolts, an annular baffle is fixedly provided on the upper end of the ring, the upper end of the annular baffle is fixedly connected with the corresponding annular block through a plurality of screws, and a first sealing ring is provided between the annular baffle and the annular block.

[0010] Adopting the above technical solutions, the utility model has the following advantages:

[0011] The setting of the ring and the annular baffle of the utility model plays a role in protecting internal components such as the elastic structure. When it is removed, it is also convenient for the maintenance and replacement of components such as the elastic structure.

[0012] Further, the elastic structure includes a pressure spring and clamping plates fixed to the upper and lower ends of the pressure spring. Clamping grooves are provided on one side of the moving plate and the adjusting plate, the clamping plates are clamped in the clamping grooves, sliders are fixedly provided at both ends of the clamping plates, sliding grooves are communicated with the positions corresponding to the sliders at both ends of the clamping grooves, and the sliders are clamped in the corresponding sliding grooves.

[0013] With the above technical solutions, the utility model has the following advantages:

[0014] The arrangement of the clamping plate and the sliding block in the utility model enables the clamping plate to be quickly installed in and disassembled from the clamping groove, facilitating subsequent replacement and repair.

[0015] Further, the first adjusting structure includes a first motor and a first threaded column. The first motor is fixedly connected to the upper end of the annular block. The output end of the first motor passes through the annular block and is fixedly connected to one end of the first threaded column. The lower end of the first threaded column penetrates through the adjusting plate and the moving plate and is rotatably connected to the upper end of the valve cover. The first threaded column is threadedly connected to the adjusting plate.

[0016] With the above technical solutions, the utility model has the following advantages:

[0017] The setting of the first motor in the utility model functions to drive the rotation of the first threaded column, thereby driving the up and down movement of the adjusting plate, realizing the extrusion of the pressure spring, and thus changing the elastic force of the pressure spring, so that the safety value of the upward movement of the valve core can be changed according to requirements.

[0018] Further, a bottom plate is fixedly provided on one side of the inner embedding groove of the valve body through a plurality of bolts. A panel is fixedly provided on the upper end of the bottom plate. The upper end of the panel is fixedly connected to the corresponding valve body through a plurality of screws. A second sealing ring is provided between the panel and the valve body.

[0019] With the above technical solutions, the utility model has the following advantages:

[0020] The arrangement of the bottom plate and the panel in the utility model functions to seal the inner embedding groove and also facilitates the replacement and repair of the internal components of the inner embedding groove.

[0021] Further, the second adjusting structure includes a second motor and a second threaded column. The second motor is fixedly connected to the upper end of the valve body. The second motor passes through the valve body and is fixedly connected to one end of the second threaded column. The other end of the second threaded column penetrates through the top plate and is rotatably connected to the valve body. The second threaded column is threadedly connected to the top plate.

[0022] With the above technical solutions, the utility model has the following advantages:

[0023] The setting of the second motor in the utility model functions to drive the rotation of the second threaded column, thereby driving the up and down movement of the top plate.

[0024] Further, on one side of the sealing part in contact with the upper end of the adjusting block, a first inner ring groove is provided. A third sealing ring is fixedly provided in the first inner ring groove. A plurality of first spring grooves are provided in the first inner ring groove. A first strengthening spring is fixedly provided between the third sealing ring and the first spring grooves.

[0025] With the above technical solutions, the utility model has the following advantages:

[0026] The arrangement of the sealing ring III and the strengthening spring I of the utility model strengthens the sealing performance between the adjusting block and the sealing part, and can effectively prevent the leakage of the medium.

[0027] Furthermore, on one side of the valve body in contact with the upper end of the valve core, there is an inner ring groove II, in which a sealing ring IV is fixedly arranged. There are several spring grooves II in the inner ring groove II, and a strengthening spring II is fixedly arranged between the sealing ring IV and the spring groove II.

[0028] With the above technical solutions, the utility model has the following advantages:

[0029] The arrangement of the sealing ring IV and the strengthening spring II of the utility model strengthens the sealing performance between the valve body and the valve core, and can effectively prevent the leakage of the medium.

[0030] Furthermore, a valve seat is arranged in the valve body. On one side of the valve seat in contact with the lower end of the valve core, there is an inner ring groove III, in which a sealing ring V is fixedly arranged. There are several spring grooves III in the inner ring groove III, and a strengthening spring III is fixedly arranged between the sealing ring V and the spring groove III.

[0031] With the above technical solutions, the utility model has the following advantages:

[0032] The arrangement of the sealing ring V and the strengthening spring III of the utility model strengthens the sealing performance between the valve seat and the valve core, and can effectively prevent the leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following further describes the utility model with reference to the drawings and embodiments.

[0034] Figure 1 is the schematic cross-sectional structure diagram of the formal section of the utility model;

[0035] Figure 2 is the schematic cross-sectional structure diagram at the center of the right view adjusting block of the utility model;

[0036] Figure 3 is the schematic cross-sectional structure diagram at the center of the right view bottom plate of the utility model;

[0037] Figure 4 is the utility model Figure 1 The enlarged structure diagram at position A in;

[0038] Figure 5 is the utility model Figure 1 The enlarged structure diagram at position B in.

[0039] Reference numerals: 1, valve body; 101, valve cavity; 102, inflow channel; 103, outflow channel; 104, pressure relief channel; 105, embedded groove; 2, valve cover; 201, perforation; 3, sealing part; 301, circulation port; 4, valve core; 401, moving plate; 5, ring; 501, annular baffle; 6, bottom plate; 601, panel; 7, adjusting block; 701, top plate; 8, card slot; 801, sliding groove; 9, clamping plate; 901, sliding block; 10, sealing ring IV; 11, reinforcing spring II; 12, motor I; 13, threaded column I; 14, annular block; 15, adjusting plate; 16, pressure spring; 17, spring groove II; 18, inner ring groove II; 19, threaded column II; 20, motor II; 21, sealing ring II; 22, sealing ring III; 23, spring groove I; 24, reinforcing spring I; 25, inner ring groove I; 26, spring groove III; 27, reinforcing spring III; 28, sealing ring V; 29, inner ring groove III; 30, valve seat; 31, sealing ring I. Detailed implementation manners

[0040] As Figures 1 to 3 shown, in a specific embodiment of the present invention, a circulating return pipeline safety valve includes a valve body 1, a valve cover 2 fixed to the upper end of the valve body 1, and a valve core 4. A valve cavity 101 is provided inside the valve body 1, a valve core 4 is provided inside the valve cavity 101, an inflow channel 102 is communicated with the lower end of the valve cavity 101, a pressure relief channel 104 is communicated with one side of the valve cavity 101, an outflow channel 103 is provided on one side of the inflow channel 102. Annular blocks 14 are fixedly provided on the outer sides of the upper ends of the valve cover 2. An adjusting plate 15 is provided at the lower end of the annular block 14 through an adjusting structure I. Perforations 201 are provided on both sides of the upper end of the valve cover 2. Moving plates 401 are fixedly provided on both sides of the upper end of the valve core 4. The moving plates 401 extend to the outside of the perforations 201. An elastic structure is provided between the moving plates 401 and the adjusting plate 15. A sealing part 3 is fixedly provided in the outflow channel 103. A circulation port 301 is provided at the center of the sealing part 3. An adjusting block 7 is provided in the circulation port 301. An embedded groove 105 is provided on one side of the valve body 1 corresponding to the upper end of the sealing part 3. The upper end of the adjusting block 7 is fixedly connected to a top plate 701. The top plate 701 is located at the bottom end of the embedded groove 105. One side of the top plate 701 can move up and down through an adjusting structure II.

[0041] With the above settings, the setting of the adjusting structure I of the present invention plays a role in controlling the up and down movement of the adjusting plate 15, thereby realizing the extrusion of the elastic structure, so that the pressure for the valve core 4 to move up can be changed, thereby playing a role in changing the water pressure safety value. When the pressure exceeds the safety value, the valve core 4 can be pushed to discharge and relieve pressure through the pressure relief channel 104, which can effectively prevent the pipeline from bursting, making the use safer, and the accuracy of electric adjustment is higher; the setting of the adjusting structure II of the present invention plays a role in controlling the up and down movement of the top plate 701, thereby driving the adjusting block 7 to move up and down, so that the size of the circulation port 301 can be changed, thereby changing the flow rate and speed of the water flow, and the accuracy of electric adjustment is higher.

[0042] As Figure 1 , Figure 2 and Figure 4 shown, a ring 5 is fixedly provided on one side of the upper end of the valve cover 2 through a plurality of bolts. An annular baffle 501 is fixedly provided at the upper end of the ring 5. The upper end of the annular baffle 501 is fixedly connected to the corresponding annular block 14 through a plurality of screws. A first sealing ring 31 is provided between the annular baffle 501 and the annular block 14. The elastic structure includes a compression spring 16 and clamping plates 9 fixed at the upper and lower ends of the compression spring 16. Claw slots 8 are provided on one side of the moving plate 401 and the adjusting plate 15. The clamping plates 9 are clamped in the claw slots 8. Sliders 901 are fixedly provided at both ends of the clamping plates 9. Slide grooves 801 are provided at both ends of the claw slots 8 corresponding to the positions of the sliders 901. The sliders 901 are clamped in the corresponding slide grooves 801. The first adjusting structure includes a first motor 12 and a first threaded column 13. The first motor 12 is fixedly connected to the upper end of the annular block 14. The output end of the first motor 12 passes through the annular block 14 and is fixedly connected to one end of the first threaded column 13. The lower end of the first threaded column 13 passes through the adjusting plate 15 and the moving plate 401 and is rotatably connected to the upper end of the valve cover 2. The first threaded column 13 is threadedly connected to the adjusting plate 15.

[0043] Through the above settings, the ring 5 and the annular baffle 501 of the present utility model play a role in protecting internal components such as the elastic structure. When it is removed, it is also convenient for the repair and replacement of components such as the elastic structure. The clamping plates 9 and the sliders 901 of the present utility model enable the clamping plates 9 to be quickly installed in and disassembled from the claw slots 8, facilitating subsequent replacement and repair. The first motor 12 of the present utility model plays a role in driving the rotation of the first threaded column 13, thereby driving the up and down movement of the adjusting plate 15, realizing the extrusion of the compression spring 16, and thus changing the elastic force of the compression spring 16, so that the safety value of the upward movement of the valve core 4 can be changed according to requirements.

[0044] As Figure 1 , Figure 2 , Figure 3 and Figure 5As shown in the figure, a bottom plate 6 is fixedly provided on one side of the valve body 1 located in the embedded groove 105 through a plurality of bolts. A panel 601 is fixedly provided at the upper end of the bottom plate 6. The upper end of the panel 601 is fixedly connected to the corresponding valve body 1 through a plurality of screws. A second sealing ring 21 is provided between the panel 601 and the valve body 1. The second adjusting structure includes a second motor 20 and a second threaded column 19. The second motor 20 is fixedly connected to the upper end of the valve body 1. The second motor 20 passes through the valve body 1 and is fixedly connected to one end of the second threaded column 19. The other end of the second threaded column 19 penetrates through the top plate 701 and is rotatably connected to the valve body 1. The second threaded column 19 is threadedly connected to the top plate 701. On one side of the sealing part 3 in contact with the upper end of the adjusting block 7, a first inner ring groove 25 is provided. A third sealing ring 22 is fixedly provided in the first inner ring groove 25. A plurality of first spring grooves 23 are provided in the first inner ring groove 25. A first reinforcing spring 24 is fixedly provided between the third sealing ring 22 and the first spring grooves 23. On one side of the valve body 1 in contact with the upper end of the valve core 4, a second inner ring groove 18 is provided. A fourth sealing ring 10 is fixedly provided in the second inner ring groove 18. A plurality of second spring grooves 17 are provided in the second inner ring groove 18. A second reinforcing spring 11 is fixedly provided between the fourth sealing ring 10 and the second spring grooves 17. A valve seat 30 is provided in the valve body 1. On one side of the valve seat 30 in contact with the lower end of the valve core 4, a third inner ring groove 29 is provided. A fifth sealing ring 28 is fixedly provided in the third inner ring groove 29. A plurality of third spring grooves 26 are provided in the third inner ring groove 29. A third reinforcing spring 27 is fixedly provided between the fifth sealing ring 28 and the third spring grooves 26.

[0045] With the above settings, the bottom plate 6 and the panel 601 of the present utility model play a role in sealing the embedded groove 105 and also facilitate the replacement and maintenance of the internal components of the subsequent embedded groove 105. The setting of the second motor 20 of the present utility model plays a role in driving the rotation of the second threaded column 19, thereby driving the up and down movement of the top plate 701. The setting of the third sealing ring 22 and the first reinforcing spring 24 of the present utility model strengthens the sealing performance between the adjusting block 7 and the sealing part 3, and can effectively prevent the leakage of the medium. The setting of the fourth sealing ring 10 and the second reinforcing spring 11 of the present utility model strengthens the sealing performance between the valve body 1 and the valve core 4, and can effectively prevent the leakage of the medium. The setting of the fifth sealing ring 28 and the third reinforcing spring 27 of the present utility model strengthens the sealing performance between the valve seat 30 and the valve core 4, and can effectively prevent the leakage of the medium.

[0046] Working principle: When in use, the first motor 12 can be started to drive the first threaded column 13 to rotate, thereby driving the adjusting plate 15 to move to a suitable position, causing the pressure spring 16 to compress, so as to change the safety value and meet the requirements for installing the pipeline. Then, according to the requirements of water flow rate and velocity, the second motor 20 can be started to drive the second threaded column 19 to rotate, thereby driving the top plate 701 to move upward, causing the adjusting block 7 to move to a suitable position, opening the circulation port 301 within a certain range, enabling water flow to flow from the inflow channel 102 into the outflow channel 103 and then flowing out through the circulation port 301. When the pressure of the water flow exceeds the safety value, the valve core 4 can be pushed upward, and the water flow will be discharged through the pressure relief channel 104 to achieve pressure relief. After pressure relief, when the pressure returns within the safety value, the pressure spring 16 can push the moving plate 401 back to its original position, thereby causing the valve core 4 to return to its original position. The first motor 12, the second motor 20, the first threaded column 13, the second threaded column 19, the pressure spring 16, the first reinforcing spring 24, the second reinforcing spring 11, the third reinforcing spring 27, the first sealing ring 31, the second sealing ring 21, the third sealing ring 22, the fourth sealing ring 10 and the fifth sealing ring 28 of the present utility model are all disclosed in the prior art, so this application will not elaborate too much on them.

[0047] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A safety valve for a circulating return water pipeline, comprising a valve body (1), a valve cover (2) fixed to the upper end of the valve body (1), and a valve core (4). A valve cavity (101) is provided in the valve body (1), the valve core (4) is provided in the valve cavity (101), an inflow channel (102) is communicated with the lower end of the valve cavity (101), a pressure relief channel (104) is communicated with one side of the valve cavity (101), and an outflow channel (103) is provided on one side of the inflow channel (102), characterized in that, On the outer side of the upper end of the valve cover (2), annular blocks (14) are fixedly arranged. The lower end of the annular block (14) is provided with an adjusting plate (15) through an adjusting structure I. On both sides of the upper end of the valve cover (2), through holes (201) are provided. On both sides of the upper end of the valve core (4), moving plates (401) are fixedly arranged. The moving plates (401) extend to the outside of the through holes (201). A elastic force structure is arranged between the moving plates (401) and the adjusting plate (15). A sealing part (3) is fixedly arranged in the outflow channel (103). A circulation port (301) is arranged in the center of the sealing part (3). An adjusting block (7) is arranged in the circulation port (301). On one side of the upper end of the valve body (1) corresponding to the sealing part (3), an embedded groove (105) is arranged. The upper end of the adjusting block (7) is fixedly connected with a top plate (701). The top plate (701) is located at the bottom end of the embedded groove (105). One side of the top plate (701) can move up and down through an adjusting structure II.

2. The safety valve for a circulating return water pipeline according to claim 1, characterized in that, On one side of the upper end of the valve cover (2) where the moving plate (401) is located, a ring (5) is fixedly arranged through a plurality of bolts. On the upper end of the ring (5), an annular baffle (501) is fixedly arranged. The upper end of the annular baffle (501) is fixedly connected with the corresponding annular block (14) through a plurality of screws. A sealing ring I (31) is arranged between the annular baffle (501) and the annular block (14).

3. The safety valve for a circulating return water pipeline according to claim 2, characterized in that, The elastic force structure includes a pressure spring (16) and clamping plates (9) fixed at the upper and lower ends of the pressure spring (16). On one side of the moving plate (401) and the adjusting plate (15), clamping grooves (8) are arranged. The clamping plates (9) are clamped in the clamping grooves (8). At both ends of the clamping plates (9), sliding blocks (901) are fixedly arranged. At the positions corresponding to the sliding blocks (901) at both ends of the clamping grooves (8), sliding grooves (801) are communicated. The sliding blocks (901) are clamped in the corresponding sliding grooves (801).

4. The safety valve for a circulating return water pipeline according to claim 3, wherein The adjusting structure I includes a motor I (12) and a threaded column I (13). The motor I (12) is fixedly connected with the upper end of the annular block (14). The output end of the motor I (12) passes through the annular block (14) and is fixedly connected with one end of the threaded column I (13). The lower end of the threaded column I (13) penetrates through the adjusting plate (15) and the moving plate (401) and is rotatably connected with the upper end of the valve cover (2). The threaded column I (13) is threadedly connected with the adjusting plate (15).

5. The safety valve for a circulating return water pipeline according to claim 1, wherein On one side of the valve body (1) where the embedded groove (105) is located, a bottom plate (6) is fixedly arranged through a plurality of bolts. On the upper end of the bottom plate (6), a panel (601) is fixedly arranged. The upper end of the panel (601) is fixedly connected with the corresponding valve body (1) through a plurality of screws. A sealing ring II (21) is arranged between the panel (601) and the valve body (1).

6. The safety valve for a circulating return water pipeline according to claim 5, wherein the second adjusting structure includes a second motor (20) and a second threaded column (19). The second motor (20) is fixedly connected to the upper end of the valve body (1). The second motor (20) passes through the valve body (1) and is fixedly connected to one end of the second threaded column (19). The other end of the second threaded column (19) penetrates through the top plate (701) and is rotatably connected to the valve body (1). The second threaded column (19) is threadedly connected to the top plate (701).

7. The safety valve for a circulating return water pipeline according to claim 6, wherein on one side of the sealing part (3) in contact with the upper end of the adjusting block (7), there is a first inner ring groove (25). A third sealing ring (22) is fixedly arranged in the first inner ring groove (25). A number of first spring grooves (23) are arranged in the first inner ring groove (25). A first strengthening spring (24) is fixedly arranged between the third sealing ring (22) and the first spring grooves (23).

8. A safety valve for a circulating return water pipeline according to claim 1, characterized in that, On one side of the valve body (1) in contact with the upper end of the valve core (4), there is a second inner ring groove (18). A fourth sealing ring (10) is fixedly arranged in the second inner ring groove (18). A number of second spring grooves (17) are arranged in the second inner ring groove (18). A second strengthening spring (11) is fixedly arranged between the fourth sealing ring (10) and the second spring grooves (17).

9. The safety valve for a circulating return water pipeline according to claim 1, characterized in that, A valve seat (30) is arranged in the valve body (1). On one side of the valve seat (30) in contact with the lower end of the valve core (4), there is a third inner ring groove (29). A fifth sealing ring (28) is fixedly arranged in the third inner ring groove (29). A number of third spring grooves (26) are arranged in the third inner ring groove (29). A third strengthening spring (27) is fixedly arranged between the fifth sealing ring (28) and the third spring grooves (26).

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