A valve feedback connecting rod with adjustable length

Abstract

The present invention discloses a valve feedback connecting rod with adjustable length, belonging to the technical field of valve connecting rods. The valve feedback connecting rod with adjustable length comprises two connecting rod modules, a fixed connecting rod is rotatably connected between the two connecting rod modules, a connecting module is installed inside the two connecting rod modules, a reaction module is installed inside the two connecting modules, and an adjustment module is installed at one opposite end of the two connecting modules. The present invention designs the connecting rod module, the connecting module, the reaction module and the adjustment module, and can determine the applicable height of the connecting rod according to the size of the valve during the use of the valve feedback connecting rod, and can adjust and buffer the sharply increased impulse of the fluid when the valve is used, so as to avoid damage to the connecting rod, and can maintain a certain opening limit according to the long-term flow rate to ensure the normal flow of the fluid, and can also be fed back to the actuator through the flow of the fluid.

Description

Technical Field

[0001] The invention belongs to the technical field of valve connecting rods, and in particular relates to a valve feedback connecting rod with adjustable length. Background Art

[0002] The valve feedback linkage is a mechanical element used to transmit position signals and feedback control in valve control systems. Usually, the valve feedback linkage is used to connect the valve actuator and the valve body. Its main function is to transmit the action of the actuator to the valve and provide real-time information of the valve opening or position through the feedback mechanism. During the opening and closing operation of the valve, the actuator drives the linkage to move through the control signal to adjust the valve opening. When the valve reaches a certain set position, the linkage transmits a signal to the control system through the feedback device to confirm the actual state of the valve and ensure that the system can accurately adjust the opening and closing state of the valve. This feedback process helps to maintain the stability and accuracy of the system, especially when precise control of parameters such as fluid flow, pressure or temperature, the role of the feedback linkage is indispensable.

[0003] The valve feedback linkage is an important component for realizing the control of the regulating valve. When the existing adjustable-length valve feedback linkage is working, when the valve is impacted by the fluid or the actuator generates a large impact force at the moment of action, the feedback linkage will be subjected to a sharp increase in impact force, causing the feedback linkage to be easily damaged. At the same time, it is unable to accurately sense when the fluid changes, making it impossible for the feedback linkage to respond in time for the actuator to make adjustments, thereby reducing the working performance of the valve feedback linkage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a valve feedback connecting rod with adjustable length.

[0005] The technical solution adopted to solve the above technical problems is: a valve feedback connecting rod with adjustable length, comprising two connecting rod modules, a fixed connecting rod is rotatably connected between the two connecting rod modules, and a connecting module is installed inside the two connecting rod modules; A reaction module is installed inside the two connection modules, and an adjustment module is installed at one opposite end of the two connection modules.

[0006] The top of the fixed connecting rod is fixedly connected to the valve frame, and the reaction module is fixedly connected to the valve.

[0007] Furthermore, the connecting rod module includes a main connecting rod, the top of the main connecting rod is provided with two connecting holes, the bottom of the main connecting rod is provided with a length adjustment groove, a bolt is movably connected inside the length adjustment groove, a nut is threadedly connected to the outer wall of the bolt, and the inner wall of the connecting hole is rotatably connected to the bending part of the fixed connecting rod.

[0008] Through the above technical scheme, when in use, first the fixed connecting rod is fixedly connected to the circular ring frame of the valve, and then one side of the reaction module is fixedly connected to the valve, so that the entire valve feedback connecting rod can form a complete device, and then the connecting rod module is used to splice the relevant parts, and the valve is adjusted according to the specifications of the valve, and an appropriate length is selected for use, which not only enables the valve to realize its own function but also increases the applicable scope of the feedback connecting rod when in use. Specifically, the bending part of the fixed connecting rod is rotatably connected to one of the connecting holes, and then the other connecting hole is fixedly connected to the actuator, so that the entire system of the feedback connecting rod can rotate, and then the length adjustment groove at the bottom of the main connecting rod is matched with nuts and bolts, so that a certain support can be formed during use to ensure that the connection of the feedback connecting rod is in the center of the valve. Therefore, when in use, the height can be selected according to the length of the length adjustment groove according to the specifications of the valve, so that the applicable scope of the valve feedback connecting rod is increased.

[0009] Furthermore, the connection module includes a flip plate, an extrusion groove is provided inside the flip plate, a cylindrical groove is provided inside the flip plate, the extrusion groove is rectangular, and one side of the extrusion groove is connected with the cylindrical groove.

[0010] Through the above technical scheme, after partial assembly is completed, the connection module can be used to realize the movement and flipping of the valve, and feedback selection can be made according to the speed of the fluid to avoid the damage of the feedback connecting rod caused by the sharply rising impact. Specifically, the flip plate can control the buffer length and flipping angle of the valve, and the main function of the extrusion groove inside it is to quickly respond when the valve is hit by the fluid. At the same time, it is rotatably connected with the bolt inside, so that the flipping angle can be controlled during adjustment. At the same time, the cylindrical groove inside the flip plate can be quickly reset after the fluid reacts to ensure the normal use of the valve. The flip plate is first facing one side when the valve is closed. After the actuator mobilizes the connecting rod module to flip it, its extruded surface will turn with the rotation. After turning, its surface will be squeezed again and it will cooperate with other modules for further adjustment.

[0011] Furthermore, the reaction module includes an extrusion plate slidably connected to the inner wall of the extrusion groove, a fixed column is fixedly connected to one side of the extrusion plate, a first spring is fixedly connected to one side of the extrusion plate, a spur gear is rotatably connected to the rear end of the extrusion plate, a rotating shaft is rotatably connected to the rear end of the spur gear, a bar tooth is fixedly connected to the rear end of the flip plate, a layer gear is rotatably connected to the rear end of the flip plate, a strip groove is provided at the rear end of the flip plate, the other end of the first spring is fixedly connected to the inner wall of the extrusion groove, the outer wall of the fixed column is slidably connected to the cylindrical groove, the bar tooth is meshed with the spur gear, the layer gear is meshed with the spur gear, and the inner wall of the strip groove is slidably connected to the spur gear connecting column.

[0012] Through the above technical solution, when the feedback connecting rod is used, when the fluid flows at a sharply rising flow rate, the connection module and the reaction module can be used to quickly respond. When the flow rate is too fast, it can be quickly and repeatedly adjusted to respond to the state of the fluid. The adaptive ability enables the valve to respond quickly to different working conditions without manual intervention or frequent adjustments, which greatly improves the automation level of the system. In addition, in an environment with large flow rate changes, if the valve cannot respond to the flow rate changes in time, it may be affected by frequent mechanical shocks or pressure fluctuations, resulting in increased wear or shortened life. The adjustable length feedback connecting rod effectively buffers such fluctuations, reduces the burden on the valve and the actuator, and thus extends the service life of the equipment. At the same time, after the valve is opened, the size of the valve opening can be determined according to the flow speed, and it can be flipped according to the feedback of the flow rate to select the appropriate size. Specifically, when the fluid flows rapidly, it first hits the valve, and then the valve is squeezed. Since the valve is fixedly connected to the extrusion plate, the extrusion plate moves in the extrusion groove and quickly squeezes the first spring backward. Since the spur gear is respectively engaged with the bar teeth and the layered gear, when the extrusion plate moves backward, the spur gear thereon will rotate on the bar teeth, thereby driving the layered gear to rotate. When the first spring is squeezed to the bottom, the layered gear rotates to the end. Since there is no gear on the straight side of the layered gear, the layered gear stops rotating at this time, and the position of the layered gear is fixed, and its outer wall gradually increases until there is a certain straight-line distance between the end user's head end connection and the end user's head end connection. On this basis, the rebound operation can be perfectly realized. At this time, the fluid will flow back after being subjected to force to the bottom. At this time, the extrusion plate will squeeze the water flow in the opposite direction, thereby realizing reciprocating, and can also provide feedback to the water flow while achieving buffering.

[0013] Furthermore, the adjustment module includes a second spring fixedly connected to the outer wall of the rotating shaft, the rear end of the flip plate is rotatably connected to a support column, the rear end of the flip plate is rotatably connected to a telescopic link, the outer wall of the telescopic link is fixedly connected to a fixed seat, the outer wall of the fixed seat is fixedly connected to the second spring, the interior of the support column is slidably connected to the second spring, and the other end of the telescopic link is rotatably connected to the other end of the fixed link.

[0014] Through the above technical solution, after the connection module and the reaction module work together to give a prompt to the fluid, the actuator can be used to open the valve, and then the adjustment module is used to select the appropriate valve opening size according to the pressure of the fluid. Through the adjustment effect of the adjustable length feedback connecting rod, the valve opening can be automatically adjusted when the flow rate changes, thereby reducing the burden on the actuator. The actuator does not need to frequently perform excessive adjustment actions, but makes more precise control based on the dynamic adjustment results of the feedback link. Specifically, when the fluid reaches the valve, the actuator is started to rotate the main connecting rod. Then, according to the flow rate of the fluid, the extrusion plate is squeezed to one side to obtain a certain space. After the flow rate is certain, the elasticity of the second spring is restored. At this time, during the rotation process, when the telescopic connecting rod and the flip plate maintain a certain closed state, the stretching length of the second spring is maximized. When the actuator flips the main connecting rod, the flip plate drives the extrusion plate to turn toward the bottom of the bottom connecting rod as the extrusion degree of the fluid drives the extrusion plate, and the second spring is contracted. During the rotation process, the fluid will continue to squeeze the extrusion plate. Due to the contraction space obtained by the second spring after extrusion, the telescopic connecting rod obtains a certain space for contraction adjustment after flipping, so that the space of the valve can be suitable for the flow of the fluid, avoiding repeated adjustments of the actuator, thereby improving the working performance of the adjustable length valve feedback connecting rod.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention designs a connecting rod module, a connection module, a reaction module and an adjustment module. When the valve feedback connecting rod is in use, the applicable height of the connecting rod can be determined according to the size of the valve. At the same time, when the valve is in use, the connecting rod can be adjusted according to the sharply increased impact of the fluid to buffer it and avoid damage to the connecting rod. The connecting rod can also maintain a certain opening limit according to the long-term flow rate to ensure the normal flow of the fluid. At the same time, the flow of the fluid can be fed back to the actuator; (2) The present invention designs a connecting rod module. When the feedback connecting rod is in use, it can first be manually adjusted and fixed according to the size of the valve to ensure the stability of the valve connecting rod when in use, and at the same time ensure the applicability of the connecting rod. When installing or debugging the valve, the adjustable length of the feedback link can be flexibly adjusted to meet the needs of opening, closing or feedback actions of different valves, thereby effectively improving the scope of application and flexibility; (3) The present invention, through the design of the connection module, the reaction module and the adjustment module, can be used in the valve feedback link. When the flow rate of the fluid increases sharply, it can buffer when the valve is impacted by the fluid or the actuator generates a large impact force at the moment of action. The buffer joint can adaptively deform and absorb excess energy, effectively preventing the link from being damaged by rigid impact, while avoiding deviation of the feedback signal due to vibration, thereby ensuring the stability and reliability of the control system. In addition, the buffer component can not only perform buffering work but also schedule the valve opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 is a schematic diagram of a three-dimensional structure of the present invention from a second viewing angle; Figure 3 yes Figure 2 A partial enlarged view of the middle A; Figure 4 It is a front view of the present invention; Figure 5 is a cross-sectional view of a first thickness of the present invention; Figure 6 yes Figure 5 A partial enlarged view of point B in the middle; Figure 7 It is a cross-sectional view of the second thickness of the present invention.

[0017] Figure numerals: 1. connecting rod module; 101. main connecting rod; 102. connecting hole; 103. length adjustment groove; 104. bolt; 105. nut; 2. fixed connecting rod; 3. connecting module; 301. flip plate; 302. extrusion groove; 303. cylindrical groove; 4. reaction module; 401. extrusion plate; 402. fixed column; 403. first spring; 404. spur gear; 405. rotating shaft; 406. bar tooth; 407. layered gear; 408. bar groove; 5. adjusting module; 501. second spring; 502. supporting column; 503. telescopic connecting rod; 504. fixing seat. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] like Figure 1-Figure 7 As shown, a valve feedback connecting rod with adjustable length in this embodiment includes two connecting rod modules 1. The connecting rod module 1 includes a main connecting rod 101. Two connecting holes 102 are provided on the top of the main connecting rod 101. A length adjustment groove 103 is provided at the bottom of the main connecting rod 101. A bolt 104 is movably connected inside the length adjustment groove 103. A nut 105 is threadedly connected to the outer wall of the bolt 104. The inner wall of the connecting hole 102 is rotatably connected to the bending part of the fixed connecting rod 2. When in use, the fixed connecting rod 2 is first fixedly connected to the circular ring frame of the valve, and then one side of the reaction module 4 is fixedly connected to the valve, so that the entire valve feedback connecting rod can form a complete device. Then, the connecting rod module 1 is used to splice the relevant parts and adjust the length according to the specifications of the valve. Selecting an appropriate length for use can not only enable the valve to realize its own function but also increase the applicable range of the feedback connecting rod when in use. Specifically, the bending part of the fixed connecting rod 2 is rotatably connected to one of the connecting holes 102, and then the other connecting hole 102 is fixedly connected to the actuator, so that the entire system of the feedback connecting rod can rotate, and then the length adjustment slot 103 at the bottom of the main connecting rod 101 is matched with the nut 105 and the bolt 104, so that a certain support can be formed during use to ensure that the connection of the feedback connecting rod is in the center of the valve. Therefore, when in use, the height can be selected according to the length of the length adjustment slot 103 according to the specifications of the valve, so that the applicable range of the valve feedback connecting rod is increased.

[0020] like Figure 7As shown, a fixed connecting rod 2 is rotatably connected between the two connecting rod modules 1, and a connecting module 3 is installed inside the two connecting rod modules 1. The connecting module 3 includes a flip plate 301, an extrusion groove 302 is opened inside the flip plate 301, and a cylindrical groove 303 is opened inside the flip plate 301. The extrusion groove 302 is rectangular, and one side of the extrusion groove 302 is connected with the cylindrical groove 303. After the partial assembly is completed, the connecting module 3 can be used to realize the movement and flipping of the valve, and feedback selection can be performed according to the speed of the fluid to avoid the sudden rise of the impulse to cause damage to the feedback connecting rod. Specifically, the flip plate 301 can control the buffer length of the valve and The flipping angle of the valve, and the extrusion groove 302 inside it mainly functions to react quickly when the valve is hit by the fluid. At the same time, it is rotatably connected with the bolt 104 inside, so that the flipping angle can be controlled during adjustment. At the same time, the cylindrical groove 303 inside the flip plate 301 can be quickly reset after the fluid reacts to ensure the normal use of the valve. The flip plate 301 is first facing one side when the valve is closed. After the actuator mobilizes the connecting rod module 1 to flip it, its extruded surface will turn with the rotation. After turning, its surface will be extruded again and will cooperate with other modules for further adjustment.

[0021] like Figure 6-Figure 7As shown, the reaction modules 4 are installed inside the two connection modules 3, and the reaction modules 4 include an extrusion plate 401 slidably connected to the inner wall of the extrusion groove 302, a fixed column 402 is fixedly connected to one side of the extrusion plate 401, a first spring 403 is fixedly connected to one side of the extrusion plate 401, a spur gear 404 is rotatably connected to the rear end of the extrusion plate 401, a rotating shaft 405 is rotatably connected to the rear end of the spur gear 404, a bar tooth 406 is fixedly connected to the rear end of the flip plate 301, a layered gear 407 is rotatably connected to the rear end of the flip plate 301, a bar groove 408 is provided at the rear end of the flip plate 301, the other end of the first spring 403 is fixedly connected to the inner wall of the extrusion groove 302, and the outer wall of the fixed column 402 slides with the cylindrical groove 303 The bar teeth 406 are meshed with the spur gear 404, the layered gear 407 is meshed with the spur gear 404, and the inner wall of the bar groove 408 is slidably connected with the connecting column of the spur gear 404. When the feedback connecting rod is used, when the fluid flows at a rapidly increasing flow rate, the connecting module 3 and the reaction module 4 can be used to quickly respond. When the flow rate is too fast, it can be quickly and repeatedly adjusted to respond to the state of the fluid. The adaptive ability enables the valve to respond quickly to different working conditions without manual intervention or frequent adjustments, which greatly improves the automation level of the system. In addition, in an environment where the flow rate changes greatly, if the valve cannot respond to the change in flow in time, it may be affected by frequent mechanical Impact or pressure fluctuations can cause increased wear or shortened service life. The adjustable-length feedback link effectively buffers such fluctuations, reduces the burden on valves and actuators, and thus extends the service life of the equipment. At the same time, after the valve is opened, the size of the valve opening can be determined according to the flow rate, and can be flipped according to the feedback of the flow rate to select the appropriate size. Specifically, when the fluid flows rapidly, it first hits the valve, and then the valve is squeezed. Since the valve is fixedly connected to the extrusion plate 401, the extrusion plate 401 moves in the extrusion groove 302 and quickly squeezes the first spring 403 backwards. Since the spur gear 404 is respectively meshed with the bar tooth 406 and the layered gear 407, when the extrusion After the plate 401 moves backward, the spur gear 404 thereon will rotate on the bar tooth 406, thereby driving the layered gear 407 to rotate. When the first spring 403 is squeezed to the bottom, the layered gear 407 will rotate to the end. Since there is no gear on the straight side of the layered gear 407, the layered gear 407 stops rotating at this time, and the position of the layered gear 407 is fixed, and its outer wall is gradually increased until there is a certain straight-line distance between the end user's head end connection, on this basis, the rebound operation can be perfectly realized. At this time, the fluid will flow back after being subjected to force at the bottom, and the extrusion plate 401 will squeeze the water flow in the opposite direction, thereby realizing reciprocation, and can also provide feedback to the water flow while achieving buffering.

[0022] like Figure 5-Figure 6As shown, an adjusting module 5 is installed at one opposite end of the two connecting modules 3, the top of the fixed connecting rod 2 is fixedly connected to the valve frame, the reaction module 4 is fixedly connected to the valve, the adjusting module 5 includes a second spring 501 fixedly connected to the outer wall of the rotating shaft 405, the rear end of the flip plate 301 is rotatably connected to the support column 502, the rear end of the flip plate 301 is rotatably connected to the telescopic connecting rod 503, the outer wall of the telescopic connecting rod 503 is fixedly connected to the fixing seat 504, the outer wall of the fixing seat 504 is fixedly connected to the second spring 501, the inside of the support column 502 is slidably connected to the second spring 501, the other end of the telescopic connecting rod 503 is rotatably connected to the other end of the fixed connecting rod 2, after the connecting module 3 and the reaction module 4 work together to prompt the fluid, the actuator can be used to open the valve, and then the adjusting module 5 is used to select the appropriate valve opening size according to the pressure of the fluid, and the valve opening can be automatically adjusted when the flow rate changes through the regulating effect of the adjustable length feedback connecting rod, thereby reducing the burden of the actuator. The actuator does not need to frequently perform excessive adjustment actions, but makes more precise control according to the dynamic adjustment result of the feedback link. Specifically, when the fluid reaches the valve, the actuator is started to rotate the main connecting rod 101, and then according to the flow rate of the fluid, the extrusion plate 401 is squeezed to one side to obtain a certain space. After the flow rate is constant, the elasticity of the second spring 501 is restored. At this time, during the rotation process, when the telescopic connecting rod 503 and the flip plate 301 maintain a certain closed state, the stretching length of the second spring 501 is maximized. When the actuator flips the main connecting rod 101, the flip plate 301 drives the extrusion plate 401 to turn toward the bottom of the bottom connecting rod as the extrusion degree of the fluid drives the second spring 501 to contract. During the rotation process, the fluid will continue to squeeze the extrusion plate 401. Due to the contraction space obtained by the second spring 501 after extrusion, the telescopic connecting rod 503 obtains a certain space for contraction adjustment after flipping, so that the space of the valve can be suitable for the flow of the fluid, avoiding repeated adjustment of the actuator, thereby improving the working performance of the adjustable length valve feedback connecting rod.

[0023] The working principle of this embodiment is as follows. When in use, the bend of the fixed connecting rod 2 is rotatably connected to one of the connecting holes 102, and then the other connecting hole 102 is fixedly connected to the actuator, and then the nut 105 and the bolt 104 are used to cooperate with the length adjustment groove 103 at the bottom of the main connecting rod 101. When the fluid flows rapidly, it first hits the valve, and then the valve is squeezed. Since the valve is fixedly connected to the squeezing plate 401, the squeezing plate 401 moves in the squeezing groove 302 and quickly squeezes the first spring 403 backwards. Since the spur gear 404 is respectively engaged with the bar tooth 406 and the layered gear 407, when the squeezing plate 401 moves backwards, the spur gear 404 thereon will rotate on the bar tooth 406, and the first spring 403 is squeezed backwards. The layered gear 407 is driven to rotate. When the first spring 403 is squeezed to the bottom, the layered gear 407 rotates to the end. Since there is no gear on the straight side of the layered gear 407, the layered gear 407 stops rotating. At this time, the fluid will flow back after being subjected to force at the bottom. At this time, the squeezing plate 401 will squeeze the water flow in the opposite direction. When the fluid reaches the valve, the actuator is started to rotate the main connecting rod 101. Then, according to the flow rate of the fluid, the squeezing plate 401 is squeezed to one side to obtain a certain space. When the flow rate is constant, the elasticity of the second spring 501 is restored, and then the telescopic connecting rod 503 obtains a certain space for contraction adjustment after flipping. At this point, the installation and use process of the adjustable length valve feedback connecting rod is completed.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A valve feedback connecting rod with adjustable length, comprising two connecting rod modules (1), characterized in that: A fixed connecting rod (2) is rotatably connected between the two connecting rod modules (1), and a connecting module (3) is installed inside the two connecting rod modules (1); A reaction module (4) is installed inside each of the two connection modules (3), and an adjustment module (5) is installed at one opposite end of each of the two connection modules (3).

2. The length-adjustable valve feedback connecting rod according to claim 1, characterized in that: The top of the fixed connecting rod (2) is fixedly connected to the valve frame, and the reaction module (4) is fixedly connected to the valve.

3. The length-adjustable valve feedback connecting rod according to claim 1, characterized in that: The connecting rod module (1) comprises a main connecting rod (101), the top of the main connecting rod (101) is provided with two connection holes (102), the bottom of the main connecting rod (101) is provided with a length adjustment groove (103), a bolt (104) is movably connected inside the length adjustment groove (103), and a nut (105) is threadedly connected to the outer wall of the bolt (104).

4. The length-adjustable valve feedback connecting rod according to claim 3, characterized in that: The inner wall of the connection hole (102) is rotatably connected to the bent portion of the fixed connecting rod (2).

5. The length-adjustable valve feedback connecting rod according to claim 1, characterized in that: The connection module (3) comprises a flip plate (301), an extrusion groove (302) is provided inside the flip plate (301), and a cylindrical groove (303) is provided inside the flip plate (301).

6. The length-adjustable valve feedback connecting rod according to claim 5, characterized in that: The extrusion groove (302) is rectangular in shape, and one side of the extrusion groove (302) is connected to the cylindrical groove (303).

7. The length-adjustable valve feedback connecting rod according to claim 5, characterized in that: The reaction module (4) comprises an extrusion plate (401) slidably connected to the inner wall of the extrusion groove (302); a fixed column (402) is fixedly connected to one side of the extrusion plate (401); a first spring (403) is fixedly connected to one side of the extrusion plate (401); a spur gear (404) is rotatably connected to the rear end of the extrusion plate (401); a rotating shaft (405) is rotatably connected to the rear end of the spur gear (404); a bar tooth (406) is fixedly connected to the rear end of the flip plate (301); a layered gear (407) is rotatably connected to the rear end of the flip plate (301); and a bar groove (408) is provided at the rear end of the flip plate (301).

8. The length-adjustable valve feedback connecting rod according to claim 7, characterized in that: The other end of the first spring (403) is fixedly connected to the inner wall of the extrusion groove (302), the outer wall of the fixed column (402) is slidably connected to the cylindrical groove (303), the bar teeth (406) are meshed with the spur gear (404), the layered gear (407) is meshed with the spur gear (404), and the inner wall of the bar groove (408) is slidably connected to the connecting column of the spur gear (404).

9. The length-adjustable valve feedback connecting rod according to claim 7, characterized in that: The adjustment module (5) comprises a second spring (501) fixedly connected to the outer wall of the rotating shaft (405); the rear end of the flip plate (301) is rotatably connected to a support column (502); the rear end of the flip plate (301) is rotatably connected to a telescopic connecting rod (503); and the outer wall of the telescopic connecting rod (503) is fixedly connected to a fixing seat (504).

10. The length-adjustable valve feedback connecting rod according to claim 9, characterized in that: The outer wall of the fixing seat (504) is fixedly connected to the second spring (501), the interior of the support column (502) is slidably connected to the second spring (501), and the other end of the telescopic connecting rod (503) is rotatably connected to the other end of the fixed connecting rod (2).

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