A regulating valve

Abstract

This utility model relates to the field of regulating valve technology and discloses a regulating valve, including a regulating valve housing. One end of the regulating valve housing is threadedly connected to a second plug, and the other end of the regulating valve housing is threadedly connected to a first plug. The regulating valve of this utility model uses a threaded rod and a valve core assembly similar to an inverted shuttle shape. The valve core assembly is controlled by an internal threaded track. The valve core assembly and the threaded rod are driven by threaded transmission, and the torque remains consistent when adjusting the valve size, making it easier to precisely control the valve size. Through the design of the lower and upper valve core assemblies, the running direction of the internal inverted shuttle-shaped lower and upper valve core assemblies is not affected by the reaction force of the fluid running direction, preventing the valve from gradually disengaging and ensuring a consistently consistent flow rate.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, and in particular to a regulating valve. Background Technology

[0002] The development of control valves is closely linked to the progress of industrial automation. As early as the beginning of the 20th century, with the rise of process industries such as chemical, petroleum, and power, higher requirements were placed on the continuity and stability of production processes. Simple on / off valves could no longer meet the needs of precise control, which spurred the birth and application of control valves.

[0003] In control valves, excessive feedback torque in the regulating mechanism manifests as increased back pressure from the fluid as the valve closes, making tightening or adjusting to the desired flow rate difficult and laborious. After adjustment, fluid fluctuations and back forces can cause the valve mechanism to retract, resulting in flow rate changes and affecting regulation accuracy. Traditional valves typically have a locking plate, which is tightened after adjustment to prevent slippage. However, this locking plate must be loosened before the second adjustment, and then tightened again, adding inconvenience. Therefore, a new control valve is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a regulating valve that solves the problem of excessive feedback torque in the regulating mechanism. This manifests as increased back pressure from the fluid as the valve closes, making tightening or adjusting to the desired flow rate difficult and laborious. Furthermore, after adjustment, fluid fluctuations and back forces can cause the valve mechanism to retract, leading to flow rate changes and affecting regulation accuracy. Traditional valves typically have a locking plate that is tightened after flow rate adjustment to prevent slippage. However, this locking plate must be loosened before the second adjustment, requiring re-tightening after adjustment, adding an inconvenient step.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A regulating valve includes a regulating valve housing, one end of which is threadedly connected to a second plug, and the other end of which is threadedly connected to a first plug. A connecting hole is provided on one side of the second plug, and a first connecting rod is movably sleeved in the connecting hole. One end of the first connecting rod is fixedly connected to a threaded rod, and a valve core assembly is threadedly connected to the outer side of the threaded rod.

[0007] Furthermore, a plurality of third limiting blocks are fixedly connected at equal intervals to the outer side of the first connecting rod, and a limiting sleeve is fixedly sleeved on the outer side of the first connecting rod. The outer side of the limiting sleeve abuts against the inner wall of the regulating valve housing, and a limiting groove is opened inside the regulating valve housing. The inner sides of the plurality of third limiting blocks abut against the limiting groove.

[0008] Furthermore, an adjustment groove is provided on the inner side of the regulating valve housing, a lower valve core assembly is fixedly connected to one side of the upper valve core assembly, and two sets of limiting assemblies are equidistantly installed on the outer side of the lower valve core assembly. The two sets of limiting assemblies have the same structure. Each limiting assembly includes two second limiting blocks, a limiting rail abuts between the two second limiting blocks, and the outer side of the limiting rail is fixedly connected to the inner wall of the regulating valve housing. A first limiting block is fixedly connected inside the regulating valve housing, a limiting rail is fixedly connected to one side of the lower valve core assembly, and the inner side of the third limiting block abuts against the limiting rail.

[0009] Furthermore, a locking block is fixedly connected to the outer side of the limiting sleeve, a knob is engaged with the outer side of the locking block, and a scale needle is fixedly connected to the outer side of the knob.

[0010] Furthermore, an inlet pipe is fixedly connected to one side of the lower part of the regulating valve housing, and an outlet pipe is fixedly connected to the other side of the lower part of the regulating valve housing.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model utilizes a threaded rod and a valve core assembly resembling an inverted shuttle shape. The valve core assembly is controlled via an internal threaded track. The valve core assembly and the threaded rod are driven by a threaded transmission, ensuring consistent torque throughout the valve adjustment process. This facilitates precise valve control. Rotating the knob, via a locking block and a first connecting rod, rotates the threaded rod, which in turn moves the valve core assembly closer to the adjusting groove. This reduces the gap between the valve core assembly and the adjusting groove, decreasing the water flow and thus regulating the water flow. When the valve core assembly reaches the adjusting groove, it closes the valve for sealing. This design, employing a valve core assembly resembling an inverted shuttle shape and controlled by an internal threaded track, ensures consistent torque throughout the valve adjustment process, making precise valve control easier.

[0013] 2. This utility model, through the design of the lower and upper valve core components, ensures that the operating direction of the internally inverted shuttle-shaped lower and upper valve core components is not affected by the reaction force of the fluid's operating direction, thus preventing the valve from gradually retracting and changing its thread direction. This guarantees a consistent flow rate over a long period. The unique geometry and inverted design of the lower and upper valve core components prevent the torque or thrust generated by the pressure applied by the fluid to the "shuttle" from being decomposed into components that could drive the internal threaded track or actuator to rotate. This design ensures that the operating direction of the internally inverted shuttle-shaped lower and upper valve core components is not affected by the reaction force of the fluid's operating direction, preventing the valve from gradually retracting and changing its thread direction, thus guaranteeing a consistent flow rate over a long period.

[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the regulating valve of this utility model at the first angle.

[0016] Figure 2 This is a schematic diagram of the overall structure of a regulating valve at the second angle according to the present invention.

[0017] Figure 3 This is an enlarged schematic diagram of a portion of the cross-sectional structure of the regulating valve housing of the regulating valve of this utility model.

[0018] Figure 4 This is an enlarged schematic diagram of a portion of the regulating groove structure of a regulating valve according to this utility model.

[0019] Figure 5 This is an enlarged schematic diagram of a portion of the structure of an assembly on the valve core of a regulating valve according to this utility model.

[0020] In the diagram: 1. Regulating valve housing; 2. First plug; 3. Second plug; 4. Connecting hole; 5. Inlet pipe; 6. Outlet pipe; 7. Knob; 8. Scale needle; 9. Locking block; 10. First connecting rod; 11. Threaded rod; 12. Upper valve core assembly; 13. First limiting block; 14. Lower valve core assembly; 15. Second limiting block; 16. Limiting groove; 17. Adjusting groove; 18. Limiting track; 19. Limiting sleeve; 20. Third limiting block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5As shown, a regulating valve includes a regulating valve housing 1. One end of the regulating valve housing 1 is threadedly connected to a second plug 3, and the other end of the regulating valve housing 1 is threadedly connected to a first plug 2. A connecting hole 4 is provided on one side of the second plug 3. A first connecting rod 10 is movably sleeved in the connecting hole 4. One end of the first connecting rod 10 is fixedly connected to a threaded rod 11, and the outer side of the threaded rod 11 is threadedly connected to a valve core assembly 12. By adopting the above technical solution, the interior of the regulating valve housing 1 is hollow, one end of the first connecting rod 10 is inserted into the regulating valve housing 1, and the valve core assembly 12 is disposed inside the regulating valve housing 1.

[0023] The second plug 3 has a sealing ring installed on the outside of the connecting hole 4, which can prevent leakage from the gap between the first connecting rod 10 and the connecting hole 4.

[0024] A plurality of third limiting blocks 20 are fixedly connected at equal intervals on the outer side of the first connecting rod 10. A limiting sleeve 19 is fixedly sleeved on the outer side of the first connecting rod 10. The outer side of the limiting sleeve 19 abuts against the inner wall of the regulating valve housing 1. A limiting groove 16 is opened inside the regulating valve housing 1. The inner sides of the plurality of third limiting blocks 20 abut against the limiting groove 16. By adopting the above technical solution, the outer surface of the limiting sleeve 19 is relatively smooth and wear-resistant. The limiting sleeve 19 can rotate inside the regulating valve housing 1. The first connecting rod 10 can be limited by the limiting sleeve 19, so that the first connecting rod 10 can only rotate along its own axis.

[0025] The outer sides of several third limiting blocks 20 abut against the inner wall of the regulating valve housing 1. The movement of the first connecting rod 10 can be limited by the third limiting blocks 20. At the same time, the outer side of the limiting sleeve 19 abuts against the second plug 3. The second plug 3 limits the movement of the limiting sleeve 19 from the outside. Thus, the threaded rod 11 and the limiting sleeve 19 limit the first connecting rod 10, so that the first connecting rod 10 can only rotate in place.

[0026] An adjustment groove 17 is provided on the inner side of the regulating valve housing 1. A lower valve core assembly 14 is fixedly connected to one side of the upper valve core assembly 12. Two sets of limiting assemblies are equidistantly installed on the outer side of the lower valve core assembly 14. The two sets of limiting assemblies have the same structure. Each limiting assembly includes two second limiting blocks 15. A limiting rail 18 abuts between the two second limiting blocks 15. The outer side of the limiting rail 18 is fixedly connected to the inner wall of the regulating valve housing 1. A first limiting block 13 is fixedly connected inside the regulating valve housing 1. A limiting rail 18 is fixedly connected to one side of the lower valve core assembly 14. The inner side of the third limiting block 20 abuts against the limiting rail 18. By adopting the above technical solution, the surface of the limiting rail 18 is relatively smooth and wear-resistant, and the second limiting blocks 15 can slide on the surface of the limiting rail 18.

[0027] The movement of the second limiting blocks 15 on both sides can be limited by the limiting track 18, thereby limiting the lower valve core assembly 14 fixedly connected to the second limiting block 15 to move only in a straight line, so that the lower valve core assembly 14 cannot rotate, thereby limiting the upper valve core assembly 12 to move only in a straight line. When the threaded rod 11 drives the toothed upper valve core assembly 12, it can drive the upper valve core assembly 12 to move in a straight line.

[0028] The first limiting block 13 can limit the limiting track 18 and thus limit the linear movement of the lower valve core assembly 14, so that the lower valve core assembly 14 is always in the state of maintaining and engaging with the threaded rod 11.

[0029] The shape of the adjusting groove 17 corresponds to the shape of the outer surface of the valve core component 12, and the adjusting groove 17 can fit in a corresponding manner with the valve core component 12.

[0030] A locking block 9 is fixedly connected to the outer side of the limiting sleeve 19, a knob 7 is locked to the outer side of the locking block 9, and a scale needle 8 is fixedly connected to the outer side of the knob 7. By adopting the above technical solution, the outer side of the knob 7 is provided with anti-slip friction texture, which makes it easy to rotate the knob 7.

[0031] The degree of rotation of knob 7 can be determined by the scale indication on the dial 8.

[0032] A water inlet pipe 5 is fixedly connected to one side of the lower part of the regulating valve housing 1, and a water outlet pipe 6 is fixedly connected to the other side of the lower part of the regulating valve housing 1. By adopting the above technical solution, the water inlet pipe 5 is set on one side of the valve core assembly 12, and the water outlet pipe 6 is set on the other side of the valve core assembly 12.

[0033] Water enters through inlet pipe 5 and exits through outlet pipe 6.

[0034] It should be noted that during use, the external pipeline is connected through the inlet pipe 5 and the outlet pipe 6. Water is injected through the inlet pipe 5, and the water flows through the gap between the valve core assembly 12 and the regulating groove 17 inside the regulating valve housing 1 and is discharged from the outlet pipe 6.

[0035] When it is necessary to adjust the water flow, rotate knob 7. Knob 7 drives threaded rod 11 to rotate through locking block 9 and first connecting rod 10. Threaded rod 11 then drives valve core upper assembly 12 to move, so that valve core upper assembly 12 moves closer to adjustment groove 17, thereby reducing the gap between valve core upper assembly 12 and adjustment groove 17, so that the water flow that can pass through is reduced, so as to achieve the purpose of adjusting water flow. When valve core upper assembly 12 moves to abut against adjustment groove 17, the valve can be closed to seal.

[0036] Furthermore, because the lower valve core component 14 and the upper valve core component 12 are shaped like inverted shuttles, the running direction of the internal inverted shuttle will not be affected by the reaction force of the fluid running direction, thus preventing the valve from slowly retracting and changing its teeth, which ensures the long-term consistency of the flow rate.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A regulating valve, comprising a regulating valve housing (1), characterized in that, One end of the regulating valve housing (1) is threaded with a second plug (3), and the other end of the regulating valve housing (1) is threaded with a first plug (2). A connecting hole (4) is provided on one side of the second plug (3). A first connecting rod (10) is movably sleeved in the connecting hole (4). One end of the first connecting rod (10) is fixedly connected with a threaded rod (11). The outer side of the threaded rod (11) is threaded with a valve core assembly (12).

2. A regulating valve according to claim 1, characterized in that: A plurality of third limiting blocks (20) are fixedly connected at equal intervals on the outer side of the first connecting rod (10), and a limiting sleeve (19) is fixedly sleeved on the outer side of the first connecting rod (10). The outer side of the limiting sleeve (19) abuts against the inner wall of the regulating valve housing (1), and a limiting groove (16) is opened inside the regulating valve housing (1). The inner sides of the plurality of third limiting blocks (20) abut against the limiting groove (16).

3. A regulating valve according to claim 2, characterized in that: The regulating valve housing (1) has an adjusting groove (17) on its inner side. The valve core upper component (12) is fixedly connected to a valve core lower component (14) on one side. Two sets of limiting components are installed at equal intervals on the outer side of the valve core lower component (14). The two sets of limiting components have the same structure. The limiting component includes two second limiting blocks (15). The two second limiting blocks (15) abut against a limiting rail (18). The outer side of the limiting rail (18) is fixedly connected to the inner wall of the regulating valve housing (1). The inside of the regulating valve housing (1) is fixedly connected to a first limiting block (13). The valve core lower component (14) is fixedly connected to a limiting rail (18) on one side. The inner side of the third limiting block (20) abuts against the limiting rail (18).

4. A regulating valve according to claim 3, characterized in that: The outer side of the limiting sleeve (19) is fixedly connected to a locking block (9), the outer side of the locking block (9) is engaged with a knob (7), and the outer side of the knob (7) is fixedly connected to a scale needle (8).

5. A regulating valve according to claim 4, characterized in that: A water inlet pipe (5) is fixedly connected to one side of the lower part of the regulating valve housing (1), and a water outlet pipe (6) is fixedly connected to the other side of the lower part of the regulating valve housing (1).

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