Liquid flow regulating valve

Abstract

The invention discloses a liquid flow regulating valve, which belongs to the field of flow regulating valves and comprises a valve shell, a driving motor is fixedly arranged at the top of the valve shell, the output end of the driving motor is fixedly connected with a telescopic rod, and a valve control panel is fixedly mounted on the valve shell and used for controlling the driving motor to work. A valve body is arranged at the bottom of the valve shell, a valve cavity is formed in the valve body, and a valve element is arranged in the valve cavity in a sliding and sealing mode. Through the arranged switching assembly, the switching assembly works through water pressure, the valve element can move downwards under the action of the tension spring, when the adjusting valve loses the sealing effect due to an internal sealing ring, the valve element of the water leakage part can be replaced in time, and the situation that the normal working efficiency of the adjusting valve is affected due to water leakage of the valve element part is reduced; the working efficiency of the regulating valve is guaranteed, and the situation that the water leakage part of the regulating valve is not treated in time, a large amount of water is leaked, and other parts in the regulating valve are corroded is reduced.

Description

Technical Field

[0001] The present invention relates to the field of flow control valves, and more particularly to a liquid flow control valve. Background Art

[0002] A flow control valve is a valve used to control the flow speed and flow rate of a fluid in a pipeline. It is mainly used in industrial process control, water supply systems, air conditioning systems and other fields. The working principle of a flow control valve is to adjust the flow rate of the fluid by changing the valve opening, valve core shape or area, so as to achieve the purpose of controlling the flow rate and pressure of the fluid.

[0003] There are many types of flow control valves. Common types include but are not limited to five common valves: needle valves, butterfly valves, ball valves, stop valves and reducer valves. When a ball valve is used for a long time, the sealing ring in its valve seat ages and wears out due to repeated use, thereby losing its sealing performance. If the ball valve continues to be used, the valve seat of the ball valve will leak. There will be impurities in the water. The impurities are mixed in the water and accumulate inside the leaking valve for a long time, which will cause electrochemical corrosion with the internal components of the valve, causing material loss in the valve core. Outside air will enter the valve core through the gap caused by the loss of material, and then oxidize the valve core, causing the valve core to rust, corrode pipes, valve cores, valve stems and other components, and cause the fluid passing through the valve to be contaminated. Therefore, it is necessary to deal with the leaking sealing ring in the valve body to reduce the occurrence of the valve working for a long time in the state of leaking inside the valve body. Summary of the invention

[0004] In view of the problems existing in the prior art, an object of the present invention is to provide a liquid flow regulating valve.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A liquid flow regulating valve comprises a valve housing, a driving motor is fixedly arranged on the top of the valve housing, an output end of the driving motor is fixedly connected to a telescopic rod, a valve control board is fixedly installed on the valve housing, and the valve control board is used to control the operation of the driving motor, a valve body is arranged on the bottom of the valve housing, the valve body is integrally connected with the valve control board and the driving motor, a valve fluid channel for inserting a pipeline is provided on the valve body, a valve bottom is fixedly installed on the bottom of the valve body, a valve cavity is provided inside the valve body, a valve core is provided with a sliding seal in the valve cavity, a sealing member is fixedly arranged on the valve core, a preparatory channel is provided on the valve core, a main channel is also provided on the valve core, the preparatory channel is located above the main channel, and the bottom of the telescopic rod passes through the valve body and extends to the valve cavity to be fixedly connected to the valve core.

[0007] Furthermore, the sealing member includes a preliminary sealing ring fixedly installed around both sides of the preliminary channel, a main sealing ring fixedly installed around both sides of the main channel, an upper sealing ring fixedly provided on the outer surface of the valve core, the upper sealing ring being located between the preliminary sealing ring and the main sealing ring, and a lower sealing ring fixedly provided on the outer surface of the valve core, the lower sealing ring being located below the main sealing ring.

[0008] Furthermore, a switching component is provided in the valve cavity, and the switching component is used to adjust the positions of the preparatory channel and the main channel. The switching component includes a turntable with a rotatable seal arranged on the inner walls on both sides of the valve core, and grooves for the turntable to rotate are provided in the inner walls on both sides of the valve core. The outer surfaces of the two groups of the turntables are fixedly connected to the first tooth plate, and the outer surfaces of the two groups of the turntables are fixedly connected to the second tooth plate. A first rotating groove is also provided in the inner walls on both sides of the valve core, and the first tooth plate is rotatably arranged in the first rotating groove, and a second rotating groove is also provided in the inner walls on both sides of the valve core, and the second tooth plate is rotatably arranged in the second rotating groove, and a bellows is slidably provided in the second rotating groove, one end of the bellows is fixedly connected to the second tooth plate, and the other end of the bellows is fixedly connected to the inner wall of the second rotating groove, and a pressure groove is provided in the valve core, and a circular plate is provided in the pressure groove for sliding sealing, and the circular plate is used in conjunction with the first tooth plate.

[0009] Furthermore, a second slide groove is provided on the inner walls on both sides of the valve core, a push block is provided with a sliding seal in the second slide groove, an air outlet is provided at one end of the bellows close to the push block, and the bellows can blow the push block to the end of the second slide groove after contraction, a first slide groove is provided on the inner walls on both sides of the valve body, a clamping rod is provided in the sliding seal in the first slide groove, and one end of the clamping rod close to the push block extends into the second slide groove, a sliding cavity is provided inside the valve bottom, a receiving seat is fixedly installed in the sliding cavity, a spring groove connected to the sliding cavity is provided in the receiving seat, a tension spring is fixedly connected to the inner wall of the bottom of the spring groove, the top of the tension spring is fixedly connected to the outer surface of the bottom of the valve core, the inner walls of the two groups of the first slide grooves are fixedly connected to the thrust springs, and the two groups of the thrust springs are respectively fixedly connected to the two groups of clamping rods.

[0010] Furthermore, two groups of symmetrical second impact channels are provided in the valve core, and two groups of symmetrical annular cavities are also provided in the valve core. Each group of annular cavities is respectively connected to each group of second impact channels, and the second impact channels are connected to the outside of the valve core. The annular cavity is arranged outside the main channel, and the second impact channel is located between the preparatory channel and the upper sealing ring. The inner wall of the annular cavity is fixedly connected to a disassembly block with a shrinking function.

[0011] Furthermore, a group of first impact channels connected to the pressure groove are symmetrically opened in the valve core, and two groups of the first impact channels are arranged between the main channel and the lower sealing ring.

[0012] Furthermore, a group of drainage channels connected to the pressure groove are symmetrically opened in the valve core, and the drainage channels are located at the bottom of the pressure groove. A group of pressure-stabilizing channels are symmetrically opened in the valve body, and the pressure-stabilizing channels are connected to the drainage channels. One end of the pressure-stabilizing channel away from the drainage channels is connected to the outside of the valve housing.

[0013] Furthermore, the two groups of the pressure-stabilizing channels and the drainage channels are on the same side as the main channel and the reserve channel, and the switching component is arranged perpendicular to the main channel and the reserve channel on a vertical plane.

[0014] Furthermore, outer ends of the two groups of the first tooth plates extend into the pressure groove, and the two groups of the first tooth plates are located below the circular plate.

[0015] Furthermore, a warning groove is provided on the receiving seat, and the warning groove is used to connect the sliding cavity with the outside of the valve housing. A group of reminder plates are symmetrically fixedly connected to the bottom of the outer surface of the circular plate, and the reminder plates are attached to the inner wall of the sliding cavity. The reminder plates are used in conjunction with the warning groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention uses water pressure to operate the switching assembly by setting up a switching assembly, so that the valve core can move downward under the action of the tension spring. When the regulating valve loses its sealing effect due to the internal sealing ring, the valve core of the leaking part can be replaced in time, thereby reducing the leakage of the valve core and affecting the normal working efficiency of the regulating valve, ensuring the working efficiency of the regulating valve and reducing the situation where the leaking part of the regulating valve is not handled in time, resulting in a large amount of leakage and corrosion of other parts inside the regulating valve.

[0018] (2) The present invention provides a disassembly block, a second impact channel and an annular cavity. When the tension spring pulls the valve core downward, the water flow will fill the second impact channel and the annular cavity, causing the disassembly block to shrink. After the valve bottom and the valve body are separated, the main sealing ring will be ejected from the valve core under the action of the disassembly block, so as to achieve the effect of automatically removing the main sealing ring. During disassembly, there is no need for maintenance personnel to remove the failed main sealing ring. The effect of automatically removing the main sealing ring provides convenience for replacing the main sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a front cross-sectional view of the internal structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 A magnified view of the structure at A;

[0022] Figure 4 It is a schematic diagram of the disassembly of the valve body, valve bottom and valve core of the present invention;

[0023] Figure 5 It is a front cross-sectional view of the internal structure of the valve core of the present invention;

[0024] Figure 6 It is a schematic diagram of the combination of the switching component and the valve bottom of the present invention;

[0025] Figure 7 For the present invention Figure 6 A magnified view of the structure at B in FIG.

[0026] Figure 8 It is a schematic diagram of the position of the disassembly block inside the valve core of the present invention;

[0027] Fig. 9 For the present invention Figure 8 Enlarged view of the structure at position C in the figure.

[0028] Description of the numbers in the figure:

[0029] 1. Valve housing; 2. Valve body; 3. Valve bottom; 4. Valve core; 5. Seal; 6. Switching assembly; 7. Disassembly block; 8. Prompt plate; 9. Thrust spring; 11. Valve control panel; 12. Telescopic rod; 13. Drive motor; 21. Valve fluid channel; 22. Valve cavity; 23. Pressure stabilizing channel; 24. First slide groove; 31. Sliding cavity; 32. Receiver; 33. Spring groove; 34. Warning groove; 41. Preparation channel; 42. Main channel; 4 3. Pressure groove; 44. First rotating groove; 45. Second rotating groove; 46. Second slide groove; 47. Drainage channel; 48. Second impact channel; 49. Ring cavity; 51. Preparatory sealing ring; 52. Upper sealing ring; 53. Main sealing ring; 54. Lower sealing ring; 61. Turntable; 62. Round plate; 63. Bellows; 64. Push block; 65. Clamp rod; 66. Tension spring; 431. First impact channel; 611. First tooth plate; 612. Second tooth plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 9A liquid flow regulating valve comprises a valve housing 1, a driving motor 13 is fixedly arranged on the top of the valve housing 1, an output end of the driving motor 13 is fixedly connected to a telescopic rod 12, a valve control board 11 is fixedly installed on the valve housing 1, and the valve control board 11 is used to control the operation of the driving motor 13, a valve body 2 is arranged at the bottom of the valve housing 1, the valve body 2 is integrally connected with the valve control board 11 and the driving motor 13, a valve fluid channel 21 for inserting a pipeline is provided on the valve body 2, a valve bottom 3 is fixedly installed at the bottom of the valve body 2, a valve cavity 22 is provided inside the valve body 2, a valve core 4 is provided with a sliding seal in the valve cavity 22, a sealing member 5 is fixedly arranged on the valve core 4, a preparatory channel 41 is provided on the valve core 4, a main channel 42 is also provided on the valve core 4, the preparatory channel 41 is located above the main channel 42, and the bottom of the telescopic rod 12 passes through the valve body 2 and extends to the valve cavity 22 to be fixedly connected with the valve core 4.

[0032] The sealing member 5 comprises a preliminary sealing ring 51 fixedly mounted around both sides of the preliminary channel 41, a main sealing ring 53 fixedly mounted around both sides of the main channel 42, an upper sealing ring 52 fixedly mounted on the outer surface of the valve core 4, the upper sealing ring 52 being located between the preliminary sealing ring 51 and the main sealing ring 53, and a lower sealing ring 54 fixedly mounted on the outer surface of the valve core 4, the lower sealing ring 54 being located below the main sealing ring 53.

[0033] When the regulating valve is working, the external water flow is transported to the other side of the valve housing 1 through the main channel 42 through the pipe fixed in the valve fluid channel 21, and the driving motor 13 is used to rotate the angle to control the opening and closing of the regulating valve. When the sealing ring is aged due to long-term use and wears during the rotation process, resulting in water leakage during the operation of the regulating valve, the water flow will flow out from the part between the valve body 2 and the valve core 4. Due to the design of the sealing ring, under the action of the water flow between the valve body 2 and the valve core 4, the water flow impacts the switching component 6 and causes the switching component 6 to start working, causing the entire valve core 4 to move downward, and at the same time the telescopic rod 12 is extended. Due to the downward movement of the valve core 4, this At this time, the main channel 42 is no longer connected to the valve fluid channels 21 on both sides, and the main channel 42 is replaced by the reserve channel 41. The water flowing into the valve liquid channel through the external pipeline will pass through the reserve channel 41 and the valve core 4 to flow out from the valve liquid channel on the other side of the valve body 2. When the regulating valve loses its sealing effect due to the internal sealing ring, the valve core 4 of the leaking part can be replaced in time, thereby reducing the leakage of the valve core 4 and the influence of the normal working efficiency of the regulating valve, ensuring the working efficiency of the regulating valve and reducing the situation that the leaking part of the regulating valve is not handled in time, a large amount of water leaks, and corrosion of other parts inside the regulating valve occurs.

[0034] like Figures 2 to 8As shown, a switching assembly 6 is provided in the valve cavity 22, and the switching assembly 6 is used to adjust the positions of the preparatory channel 41 and the main channel 42. The switching assembly 6 includes a rotating disk 61 that is rotatably sealed and arranged on the inner walls on both sides of the valve core 4. The inner walls on both sides of the valve core 4 are provided with grooves for the rotating disk 61 to rotate. The outer surfaces of the two groups of rotating disks 61 are fixedly connected to the first tooth plate 611, and the outer surfaces of the two groups of rotating disks 61 are fixedly connected to the second tooth plate 612. The inner walls on both sides of the valve core 4 are also provided with first rotating grooves 44, and the first tooth plate 611 The valve core 4 is rotatably arranged in the first rotation groove 44, and the inner walls on both sides of the valve core 4 are also provided with second rotation grooves 45. The second tooth plate 612 is rotatably arranged in the second rotation groove 45. A bellows 63 is slidably arranged in the second rotation groove 45. One end of the bellows 63 is fixedly connected to the second tooth plate 612, and the other end of the bellows 63 is fixedly connected to the inner wall of the second rotation groove 45. A pressure groove 43 is arranged in the valve core 4, and a circular plate 62 is provided for sliding sealing in the pressure groove 43. The circular plate 62 is used in conjunction with the first tooth plate 611.

[0035] Second slide grooves 46 are provided on the inner walls on both sides of the valve core 4, and a push block 64 is provided for sliding sealing in the second slide groove 46. An air outlet is provided at one end of the bellows 63 close to the push block 64. After the bellows 63 contracts, the push block 64 can be blown to the end of the second slide groove 46. First slide grooves 24 are provided on the inner walls on both sides of the valve body 2, and a clamping rod 65 is provided for sliding sealing in the first slide groove 24. One end of the clamping rod 65 close to the push block 64 extends into the second slide groove 46. A sliding cavity 31 is provided inside the valve bottom 3, and a receiving seat 32 is fixedly installed in the sliding cavity 31. A spring groove 33 connected to the sliding cavity 31 is provided in the receiving seat 32. The inner wall of the bottom of the spring groove 33 is fixedly connected to a tension spring 66, and the top of the tension spring 66 is fixedly connected to the outer surface of the bottom of the valve core 4. The inner walls of the two groups of first slide grooves 24 are fixedly connected to thrust springs 9, and the two groups of thrust springs 9 are respectively fixedly connected to the two groups of clamping rods 65.

[0036] A group of first impact channels 431 communicating with the pressure groove 43 are symmetrically provided in the valve core 4 , and the two groups of first impact channels 431 are arranged between the main channel 42 and the lower sealing ring 54 .

[0037] A group of drainage channels 47 connected to the pressure groove 43 are symmetrically opened in the valve core 4, and the drainage channels 47 are located at the bottom of the pressure groove 43. A group of pressure-stabilizing channels 23 are symmetrically opened in the valve body 2, and the pressure-stabilizing channels 23 are connected to the drainage channels 47. One end of the pressure-stabilizing channel 23 away from the drainage channels 47 is connected to the outside of the valve housing 1.

[0038] The two groups of pressure stabilizing channels 23 and drainage channels 47 are both on the same side as the main channel 42 and the reserve channel 41 , and the switching assembly 6 is arranged perpendicularly to the main channel 42 and the reserve channel 41 on a vertical plane.

[0039] The outer ends of the two sets of first tooth plates 611 extend into the pressure groove 43 , and the two sets of first tooth plates 611 are located below the circular plate 62 .

[0040] When water leaks inside the regulating valve, water flows through the gap between the valve core 4 and the valve body 2, and rushes into the pressure groove 43 through the first impact channel 431, and gradually presses the circular plate 62 downward to make the circular plate 62 move downward in the pressure groove 43. In the process of moving downward, the circular plate 62 pushes the first tooth plate 611 to move, and the rotating disk 61 moves as shown in FIG. Figure 7 As shown in the figure, it rotates counterclockwise. During this process, due to the counterclockwise rotation of the turntable 61, the second tooth plate 612 will slide in the second rotating groove 45, and at the same time, the bellows 63 will contract, and the bellows 63 will blow the internal gas into the second sliding groove 46, so that the push block 64 slides and pushes the clamping rod 65 to gradually leave the second sliding groove 46 and enter the first sliding groove 24, until the circular plate 62 moves to the bottom end of the pressure groove 43, and the first tooth plate 611 moves to the end of the first rotating groove 44. At this time, the clamping rod 65 completely leaves the first sliding groove 24 and enters the second sliding groove 46. The clamping rod 65 no longer limits the upward and downward sliding of the valve core 4. At this time, the tension spring 66 in the extended state will pull the valve core 4 to move downward in the valve chamber 22, so that when the valve core 4 leaks, the preparatory channel 41 and the main channel 42 can be replaced in time, and the regulating valve can be automatically repaired without the maintenance personnel finding the leakage, so as to further reduce the leakage of the regulating valve.

[0041] like Figures 2 to 9 As shown, two groups of symmetrical second impact channels 48 are provided in the valve core 4, and two groups of symmetrical annular cavities 49 are also provided in the valve core 4. Each group of annular cavities 49 is respectively connected to each group of second impact channels 48. The second impact channels 48 are connected to the outside of the valve core 4. The annular cavity 49 is arranged outside the main channel 42. The second impact channel 48 is located between the preparatory channel 41 and the upper sealing ring 52. The inner wall of the annular cavity 49 is fixedly connected to the disassembly block 7 with a shrinking function.

[0042] When water leaks inside the regulating valve and the switching assembly 6 works, the valve core 4 moves downward in the valve cavity 22. During the downward movement of the valve core 4, the water flow passing through the valve fluid channel 21 will impact the second impact channel 48, and the water flow enters the second impact channel 48 and fills the second impact channel 48 and the annular cavity 49. The disassembly block 7 in the annular cavity 49 will also shrink under the action of the water pressure. After the second impact channel 48 passes through the valve fluid channel 21, the valve core 4 and the inner wall of the valve cavity 22 are slidingly sealed. At this time, the water in the second impact channel 48 and the annular cavity 49 will not be discharged, and at the same time, the disassembly block 7 is in a contracted state, which will generate water pressure in the second impact channel 48 and the annular cavity 49. When the two sets of main sealing rings 53 are in a pressurized state, due to the limiting effect of the valve cavity 22 on the main sealing rings 53, the main sealing rings 53 will not pop out from the valve core 4 until the main sealing rings 53 need to be replaced. After the valve bottom 3 and the valve body 2 are separated, since the main sealing rings 53 are in the sliding cavity 31 at this time, and the valve bottom 3 is separated from the valve body 2, the main sealing rings 53 are not limited by the inner wall of the sliding cavity 31. At this time, the disassembly block 7 rebounds and the main sealing rings 53 are popped out from the valve core 4 to achieve the effect of automatically removing the main sealing rings 53. During disassembly, there is no need for maintenance personnel to disassemble the failed main sealing rings 53. The effect of automatically disassembling the main sealing rings 53 provides convenience for replacing the main sealing rings 53.

[0043] When the main sealing ring 53 is pushed out, the telescopic rod 12 can be electrically extended through the valve control board 11. Here, the telescopic rod 12 is an electric telescopic rod 12, so that the second impact channel 48 is connected with the pressure stabilizing channel 23, so that the air pressure inside the second impact channel 48 and the annular cavity 49 is balanced, so that water flows out from the position of the main sealing ring 53 by its own gravity.

[0044] When the tension spring 66 pulls the valve core 4 downward and enters the sliding chamber 31, the thrust spring 9 cannot move the valve core 4 downward due to the limiting effect of the outer wall of the valve core 4 on the clamping rod 65. Figure 7 , the rotary disc 61 and the circular plate 62 will not move. At this time, the valve bottom 3 is separated from the valve body 2. At this time, the drainage channel 47 and the pressure-stabilizing channel 23 are both connected to the outside. The pressure in the pressure groove 43 is the same as the external air pressure. The water in the pressure groove 43 will be discharged from the drainage channel 47 due to its own gravity. After the replacement of the main sealing ring 53 is completed, the valve bottom 3 is installed on the valve body 2. The tension spring 66 rebounds and cooperates with the contraction of the telescopic rod 12, so that the main channel 42 is connected to the valve fluid channel 21 again. At this time, since the second slide groove 46 is connected to the first slide groove 24 again, under the action of the thrust spring 9, the clamping rod 65 is as shown in FIG. Figure 7As shown in FIG. 1 , the push block 64 moves to the left, the bellows 63 is inflated to fill the second rotating groove 45 , and the rotating disk 61 rotates clockwise, and the circular plate 62 is lifted up by the first tooth plate 611 , thereby resetting the switching assembly 6 , so that the entire regulating valve can continue to be used, and the normal function of the switching assembly 6 is maintained;

[0045] It should be noted that: the valve bottom 3 and the valve body 2 are fixedly installed by flanges;

[0046] When the preparation channel 41 is in communication with the valve fluid channel 21 , the second impact channel 48 is not in communication with the pressure stabilizing channel 23 ;

[0047] The disassembly block 7 is made of a shrinkable and resilient material, specifically a soft rubber with strong elasticity and large shrinkage.

[0048] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a warning groove 34 is provided on the receiving seat 32, and the warning groove 34 is used to connect the sliding cavity 31 with the outside of the valve housing 1. A group of reminder plates 8 are symmetrically fixedly connected to the bottom of the outer surface of the circular plate 62, and the reminder plates 8 are attached to the inner wall of the sliding cavity 31. The reminder plates 8 are used in conjunction with the warning groove 34.

[0049] First, when the main sealing ring 53 loses its sealing effect, water will flow into the pressure groove 43, and part of the water will flow into the pressure stabilizing channel 23 through the drainage channel 47 and be discharged to the outside of the valve housing 1. At this time, water leakage can be observed on both sides of the bottom of the valve housing 1. At the same time, the water remaining in the valve body 2 can be reduced, reducing the excessive moisture in the valve body 2 and accelerating the corrosion of the internal parts of the valve body 2. When the switching component 6 works, the entire valve core 4 moves downward under the action of the switching component 6, pushing the prompt plate 8 in the sliding cavity 31 downward, and then the prompt plate 8 will pass through the warning groove 34 and be exposed to the outside of the valve housing 1 to prompt the maintenance personnel. The maintenance personnel only need to observe whether there is water leakage and water marks under the valve housing 1, and observe whether the prompt plate 8 is extended to determine whether the regulating valve is leaking, which is convenient for the maintenance personnel to judge whether the regulating valve is leaking faster and more accurately, providing convenience for the maintenance personnel's work.

[0050] Instructions for use: When the regulating valve is working, the external water flow is transported to the other side of the valve housing 1 through the main channel 42 through the pipe fixed to the valve fluid channel 21, and the driving motor 13 is used to rotate the angle to control the opening and closing of the regulating valve. When the sealing ring is aged due to long-term use and wears during the rotation process, resulting in water leakage during the operation of the regulating valve, the water flow will flow out from the part between the valve body 2 and the valve core 4. Due to the design of the sealing ring, under the action of the water flow between the valve body 2 and the valve core 4, the water flow impacts the switching component 6 and causes the switching component 6 to start working, causing the entire valve core 4 to move downward. Due to the downward movement of the valve core 4, the main channel 42 is no longer connected to the valves on both sides. The fluid channel 21 is connected, and the main channel 42 is replaced by the reserve channel 41. The water that enters the valve liquid channel through the external pipeline will pass through the reserve channel 41 and the valve core 4 to flow out from the valve liquid channel on the other side of the valve body 2. When the regulating valve loses its sealing effect due to the internal sealing ring, the valve core 4 of the leaking part can be replaced in time, thereby reducing the leakage of the valve core 4 and affecting the normal working efficiency of the regulating valve, ensuring the working efficiency of the regulating valve, and being able to automatically repair the regulating valve before the maintenance personnel find out the leakage, thereby reducing the situation where the leaking part of the regulating valve is not dealt with in time, a large amount of leakage, and corrosion of other components inside the regulating valve.

[0051] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid flow regulating valve, comprising a valve housing (1), a driving motor (13) being fixedly arranged on the top of the valve housing (1), an output end of the driving motor (13) being fixedly connected to a telescopic rod (12), a valve control board (11) being fixedly mounted on the valve housing (1), the valve control board (11) being used to control the operation of the driving motor (13), characterized in that: A valve body (2) is provided at the bottom of the valve housing (1), and the valve body (2) is integrally connected to the valve control board (11) and the drive motor (13); a valve fluid channel (21) for inserting a pipeline is provided on the valve body (2); a valve bottom (3) is fixedly installed at the bottom of the valve body (2); a valve cavity (22) is provided inside the valve body (2); a valve core (4) is provided in a sliding seal in the valve cavity (22); a sealing member (5) is fixedly provided on the valve core (4); a preparatory channel (41) is provided on the valve core (4); a main channel (42) is also provided on the valve core (4); the preparatory channel (41) is located above the main channel (42); the bottom of the telescopic rod (12) passes through the valve body (2) and extends into the valve cavity (22) to be fixedly connected to the valve core (4).

2. A liquid flow regulating valve according to claim 1, characterized in that: The sealing member (5) comprises a preliminary sealing ring (51) fixedly mounted around both sides of the preliminary channel (41), a main sealing ring (53) fixedly mounted around both sides of the main channel (42), an upper sealing ring (52) fixedly sleeved on the outer surface of the valve core (4), the upper sealing ring (52) being located between the preliminary sealing ring (51) and the main sealing ring (53), and a lower sealing ring (54) fixedly sleeved on the outer surface of the valve core (4), the lower sealing ring (54) being located below the main sealing ring (53).

3. A liquid flow regulating valve according to claim 2, characterized in that: A switching assembly (6) is arranged in the valve cavity (22), and the switching assembly (6) is used to adjust the positions of the preparatory channel (41) and the main channel (42). The switching assembly (6) comprises a rotating disk (61) which is rotatably sealed and arranged on the inner walls on both sides of the valve core (4). Grooves for the rotating disk (61) to rotate are provided in the inner walls on both sides of the valve core (4). The outer surfaces of the two groups of the rotating disks (61) are fixedly connected to the first tooth plate (611). The outer surfaces of the two groups of the rotating disks (61) are fixedly connected to the second tooth plate (612). The inner walls on both sides of the valve core (4) are also provided with first rotating grooves (44). The first tooth plate (611) is rotatably arranged in the first rotation groove (44), and second rotation grooves (45) are also provided in the inner walls on both sides of the valve core (4). The second tooth plate (612) is rotatably arranged in the second rotation groove (45), and a bellows (63) is slidably arranged in the second rotation groove (45). One end of the bellows (63) is fixedly connected to the second tooth plate (612), and the other end of the bellows (63) is fixedly connected to the inner wall of the second rotation groove (45). A pressure groove (43) is provided in the valve core (4), and a circular plate (62) is slidably sealed in the pressure groove (43).

4. A liquid flow regulating valve according to claim 3, characterized in that: The inner walls on both sides of the valve core (4) are provided with second slide grooves (46), the sliding seal in the second slide groove (46) is provided with a push block (64), the end of the bellows (63) close to the push block (64) is provided with an air outlet, and the bellows (63) can blow the push block (64) to the end of the second slide groove (46) after contraction, and the inner walls on both sides of the valve body (2) are provided with first slide grooves (24), the sliding seal in the first slide groove (24) is provided with a clamping rod (65), and the end of the clamping rod (65) close to the push block (64) extends to the second slide groove (46). 6), a sliding cavity (31) is provided inside the valve bottom (3), a receiving seat (32) is fixedly installed in the sliding cavity (31), a spring groove (33) connected to the sliding cavity (31) is provided in the receiving seat (32), a tension spring (66) is fixedly connected to the inner wall of the bottom of the spring groove (33), the top of the tension spring (66) is fixedly connected to the outer surface of the bottom of the valve core (4), the inner walls of the two groups of the first sliding grooves (24) are fixedly connected to the thrust springs (9), and the two groups of the thrust springs (9) are respectively fixedly connected to the two groups of clamping rods (65).

5. A liquid flow regulating valve according to claim 4, characterized in that: The valve core (4) is provided with two groups of symmetrical second impact channels (48), and the valve core (4) is also provided with two groups of symmetrical annular cavities (49), each group of the annular cavities (49) is respectively connected to each group of the second impact channels (48), the second impact channels (48) are connected to the outside of the valve core (4), the annular cavities (49) are arranged outside the main channel (42), the second impact channels (48) are located between the preparatory channel (41) and the upper sealing ring (52), and the inner wall of the annular cavity (49) is fixedly connected to a disassembly block (7) having a contraction function.

6. A liquid flow regulating valve according to claim 5, characterized in that: A group of first impact channels (431) communicating with the pressure groove (43) are symmetrically provided in the valve core (4), and two groups of the first impact channels (431) are arranged between the main channel (42) and the lower sealing ring (54).

7. A liquid flow regulating valve according to claim 6, characterized in that: A group of drainage channels (47) in communication with the pressure groove (43) are symmetrically provided in the valve core (4), and the drainage channels (47) are located at the bottom of the pressure groove (43). A group of pressure-stabilizing channels (23) are symmetrically provided in the valve body (2), and the pressure-stabilizing channels (23) are in communication with the drainage channels (47). One end of the pressure-stabilizing channels (23) away from the drainage channels (47) is in communication with the outside of the valve housing (1).

8. A liquid flow regulating valve according to claim 7, characterized in that: The two groups of pressure stabilizing channels (23) and drainage channels (47) are both located on the same side as the main channel (42) and the reserve channel (41), and the switching assembly (6) is arranged perpendicularly to the main channel (42) and the reserve channel (41) on a vertical plane.

9. A liquid flow regulating valve according to claim 8, characterized in that: The outer ends of the two groups of the first tooth plates (611) extend into the pressure groove (43), and the two groups of the first tooth plates (611) are located below the circular plate (62).

10. A liquid flow regulating valve according to claim 9, characterized in that: The receiving seat (32) is provided with a warning groove (34), and the warning groove (34) is used to connect the sliding cavity (31) with the outside of the valve housing (1). The bottom of the outer surface of the circular plate (62) is symmetrically fixedly connected to a group of prompt plates (8), and the prompt plates (8) are attached to the inner wall of the sliding cavity (31).

Images