Valve adjusting mechanism and diaphragm valve based on adjusting mechanism

Abstract

The invention relates to the technical field of diaphragm valves, in particular to a valve adjusting mechanism and a diaphragm valve based on the valve adjusting mechanism, the valve adjusting mechanism is installed on the diaphragm valve and comprises a rack, an adjusting device and a driving mechanism, and a positioning piece and a linear driving assembly used for controlling the positioning piece to ascend and descend are movably arranged in the rack; an executing part connected with the diaphragm is arranged in the rack, the adjusting device comprises a coarse adjusting assembly and a fine adjusting assembly, the coarse adjusting assembly and the fine adjusting assembly are both used for controlling the executing part to move, the driving mechanism comprises a rotary driving assembly and a connecting assembly, and the rotary driving assembly is connected with the coarse adjusting assembly and the fine adjusting assembly through the connecting assembly. According to the diaphragm valve, the function of rapidly and accurately adjusting lifting of the executing part is achieved, the executing part drives the diaphragm to be opened and closed, then the flow of the diaphragm valve is accurately adjusted, and the problem that the adjusting precision of an existing diaphragm valve cannot meet the use requirement is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm valves, and in particular to a valve regulating mechanism and a diaphragm valve based on the regulating mechanism. Background Art

[0002] The diaphragm valve is a cut-off valve, which is characterized by using a diaphragm as a start-stop component to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. When the diaphragm valve adjusts the flow, due to the limited deformation capacity of the diaphragm, the adjustment stroke of the valve body is shorter than that of other cut-off valves, so the flow adjustment range is limited, and the adjustment stroke affects the flow adjustment accuracy.

[0003] To this end, Chinese patent CN221401681U discloses a diaphragm valve with adjustable flow, which can keep the external environment dry while protecting the diaphragm through the coordinated use of the flow regulating component and the protective component on the top of the diaphragm valve body, so that when the valve body is closed, water can flow to the inside of the container without polluting the external environment. At the same time, it is convenient to replace the pressure spring to maintain stable and effective protection performance. It can also accurately adjust and control the flow when the valve body is opened, which is convenient for external staff to check, greatly improving the actual performance and practicality of the diaphragm valve.

[0004] However, although the existing diaphragm valve can observe the flow regulation status in real time through the cooperation of the indicator rod and the numerical plate, it is still difficult to accurately control the flow regulation value, especially in the food or pharmaceutical processing industry, when the regulation accuracy requirement is high, the operator needs to repeatedly debug to make the flow close to the specified value, which is not only time-consuming and labor-intensive, but also unable to achieve the specified regulation accuracy. Summary of the invention

[0005] In view of the above problems, a valve adjustment mechanism and a diaphragm valve based on the adjustment mechanism are provided, which solve the problem that the adjustment accuracy of the existing diaphragm valve cannot meet the use requirements through a frame, an adjustment device and a driving mechanism.

[0006] To solve the problems of the prior art, the present invention provides a valve regulating mechanism, which is installed on a diaphragm valve and includes a frame, an regulating device and a driving mechanism. A positioning piece and a linear driving component for controlling the lifting and lowering of the positioning piece are movably arranged in the frame. An actuator connected to the diaphragm is arranged in the frame. The regulating device includes a coarse adjustment component and a fine adjustment component. Both the coarse adjustment component and the fine adjustment component are used to control the movement of the actuator. The driving mechanism includes a rotary driving component and a connecting component. The rotary driving component is respectively connected to the coarse adjustment component and the fine adjustment component through the connecting component. In a working state, the rotary driving component drives the coarse adjustment component through the connecting component, and the coarse adjustment component controls the movement of the actuator. When the coarse adjustment component contacts the positioning piece, the connecting component disconnects the coarse adjustment component and the rotary driving component, and at the same time, the connecting component connects the fine adjustment component and the rotary driving component. The rotary driving component drives the fine adjustment component through the connecting component, and the fine adjustment component controls the movement of the actuator.

[0007] Preferably, the coarse adjustment assembly includes an abutment member and an elastic member, the abutment member is movably arranged in the frame, the abutment member is transmission-connected to the connecting assembly, the elastic member is used to control the resetting of the abutment member, and when the abutment member abuts against the positioning member, the connecting assembly connects the fine adjustment assembly and the rotation drive assembly.

[0008] Preferably, the connecting assembly includes a control ring and a docking ring, and two control rings and two docking rings are provided. The two control rings are transmission connected, the axis of the docking ring and the axis of the control ring are collinear, and the two control rings are located between the two docking rings, the lower docking ring is coaxially connected to the abutment member, the control ring is transmission connected to the driving end of the rotation drive assembly, the upper docking ring and the lower docking ring are transmission connected to the coarse adjustment assembly and the fine adjustment assembly respectively, and when the control ring abuts against the docking ring, the control ring drives the docking ring to rotate synchronously.

[0009] Preferably, a connecting ring is provided on the first docking ring, a connecting rod is provided on the connecting ring, and two ends of the connecting rod are respectively connected to the connecting ring and the second connecting rod.

[0010] Preferably, the coarse adjustment assembly includes a first screw and a nut, the first screw is rotatably set on the frame, and the first screw is transmission-connected to the actuator, the nut is fixedly mounted on the frame, and the first screw is threadedly connected to the nut, and the control ring located above is coaxially connected to the top of the first screw.

[0011] Preferably, the fine adjustment assembly includes a first support, a gear ring and a rotating gear. The first support can be slidably sleeved on the first screw. A first rotating shaft is rotatably arranged on the first support. The gear ring is rotatably arranged on the lower docking ring. The rotating gear is sleeved on the first rotating shaft. The rotating gear is meshingly connected with the gear ring. A reduction transmission assembly is also provided on the frame. The first rotating shaft is transmission-connected to the first screw via the reduction transmission assembly.

[0012] Preferably, the reduction transmission assembly includes a first bracket, a bevel gear, a second support, a second bracket and a worm wheel. The first bracket is rotatably provided with a second shaft. Two bevel gears are provided. The two bevel gears are respectively sleeved on the first shaft and the second shaft. The two bevel gears are meshingly connected. The second support is connected to the first support through a rod. The second support is rotatably provided with a third shaft. The third shaft and the second shaft are transmission-connected. The second bracket is arranged on the first support. The second bracket is rotatably provided with a worm. The worm wheel is sleeved on the first screw, and the worm is meshingly connected with the worm wheel.

[0013] Preferably, the rotary drive assembly comprises a rotary handle which is coaxially connected to the upper control ring.

[0014] Preferably, the linear drive assembly includes a rotary driver, a second screw and a guide rod. The second screw is rotatably arranged on the frame, the second screw is threadedly connected to the positioning member, the guide rod and the rotary driver are arranged on the frame, the guide rod is slidably matched with the positioning member, and the rotary driver is used to drive the second screw to rotate.

[0015] A diaphragm valve based on a valve regulating mechanism. The diaphragm valve comprises a connecting pipe, and the valve regulating mechanism is arranged on the connecting pipe.

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

[0017] 1. The present invention realizes the function of quickly and accurately adjusting the lifting and lowering of the actuator through the frame, the adjustment device and the driving mechanism, so as to drive the diaphragm to open and close through the actuator, and then accurately adjust the flow of the diaphragm valve, solving the problem that the adjustment accuracy of the existing diaphragm valve cannot meet the use requirements. Compared with the traditional diaphragm valve, the present invention has achieved significant innovation and improvement. By dividing the adjustment stage into two stages of coarse adjustment and fine adjustment, in addition, the design of the present invention fully considers the versatility and adaptability, so that it can easily cope with different usage scenarios and working conditions. Whether it is an occasion that requires a quick response or an application scenario that requires extremely high precision, the present invention can provide excellent adjustment performance with its unique two-stage adjustment mechanism and automatic switching function.

[0018] 2. The present invention realizes the function of switching between the coarse adjustment state and the fine adjustment state through the positioning member through the abutment member and the elastic member, so as to achieve the effect of automatically switching the fine adjustment state when the positioning member contacts the abutment member, so that the operator can directly complete the entire adjustment action through the rotary drive assembly after adjusting the position of the positioning member, greatly reducing the complexity of the adjustment, and improving the adjustment efficiency while improving the adjustment accuracy. The rotary drive assembly drives the connecting assembly, and the connecting assembly drives the coarse adjustment assembly. The coarse adjustment assembly controls the actuator to move quickly, and the coarse adjustment assembly controls the abutment member to move synchronously until the abutment member contacts the positioning member and stops moving due to the obstruction of the positioning member, so that the abutment member moves relative to the actuator, and the abutment member drives the connecting assembly to disconnect the connection between the coarse adjustment assembly and the rotary drive assembly, and connect the fine adjustment assembly and the rotary drive assembly to complete the switching between the coarse adjustment state and the fine adjustment state.

[0019] 3. The control ring and the docking ring of the present invention realize the function of controlling the rotation drive assembly to be connected to the coarse adjustment assembly and the fine adjustment assembly respectively, so as to achieve the effect of quickly switching the output of the rotation drive assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a diaphragm valve based on a valve regulating mechanism.

[0021] Figure 2 The invention is a three-dimensional schematic diagram of the internal structure of a frame of a valve regulating mechanism in a coarse adjustment state.

[0022] Figure 3 The invention is a three-dimensional schematic diagram of a regulating device and a driving mechanism in a valve regulating mechanism.

[0023] Figure 4 It is a three-dimensional schematic diagram of an adjusting device in a valve adjusting mechanism.

[0024] Figure 5 The utility model is a three-dimensional exploded schematic diagram of an adjusting device in a valve adjusting mechanism.

[0025] Figure 6 yes Figure 5 A local enlarged schematic diagram of point A in the middle.

[0026] Figure 7 It is a three-dimensional schematic diagram of a reduction transmission component in a valve regulating mechanism.

[0027] Figure 8 yes Figure 7 A local enlarged schematic diagram of point B in the middle.

[0028] Fig. 9 The utility model is a three-dimensional schematic diagram of the cooperation between a rotating handle and a control ring in a valve adjustment mechanism.

[0029] Fig.10 It is a three-dimensional schematic diagram of the internal structure of a frame of a valve regulating mechanism in a fine-tuning state.

[0030] The numbers in the figure are: 1-frame; 11-positioning member; 12-linear drive assembly; 121-rotational drive; 122-second screw rod; 123-guide rod; 13-actuator; 2-adjusting device; 21-coarse adjustment assembly; 211-abutment member; 212-first elastic member; 213-first screw rod; 214-nut; 22-fine adjustment assembly; 221-first support; 2211-first rotating shaft; 222-gear ring; 223-rotation gear; 23-reduction transmission assembly; 231-first bracket; 2 311-second rotating shaft; 232-bevel gear; 233-second support; 2331-third rotating shaft; 234-second support; 2341-worm; 235-worm wheel; 236-pulley; 237-transmission belt; 3-driving mechanism; 31-rotating driving assembly; 311-rotating handle; 32-connecting assembly; 321-control ring; 3211-docking block; 3212-second elastic member; 322-docking ring; 3221-docking groove; 33-connecting ring; 34-connecting rod; 4-connecting pipe. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1 - Figure 3 A valve regulating mechanism is installed on a diaphragm valve, including a frame 1, a regulating device 2 and a driving mechanism 3. A positioning member 11 and a linear driving component 12 for controlling the lifting of the positioning member 11 are movably arranged in the frame 1. An actuator 13 connected to the diaphragm is arranged in the frame 1. The regulating device 2 includes a coarse adjustment component 21 and a fine adjustment component 22. The coarse adjustment component 21 and the fine adjustment component 22 are both used to control the movement of the actuator 13. The driving mechanism 3 includes a rotating driving component 31 and a connecting component 32. The rotating driving component 31 is connected to the connecting component 31 through the connecting component 32. 2 are respectively connected to the coarse adjustment component 21 and the fine adjustment component 22. In the working state, the rotation drive component 31 drives the coarse adjustment component 21 through the connection component 32, and the coarse adjustment component 21 controls the actuator 13 to move. When the coarse adjustment component 21 contacts the positioning member 11, the connection component 32 disconnects the coarse adjustment component 21 and the rotation drive component 31, and at the same time, the connection component 32 connects the fine adjustment component 22 and the rotation drive component 31. The rotation drive component 31 drives the fine adjustment component 22 through the connection component 32, and the fine adjustment component 22 controls the actuator 13 to move.

[0033] The present invention realizes the function of quickly and accurately adjusting the lifting and lowering of the actuator 13 through the frame 1, the adjustment device 2 and the driving mechanism 3, so that the actuator 13 drives the diaphragm to open and close, and then accurately adjusts the flow of the diaphragm valve, solving the problem that the adjustment accuracy of the existing diaphragm valve cannot meet the use requirements. In the working state, when the operator adjusts the flow of the diaphragm valve, the linear drive component 12 is first used to control the positioning member 11 to quickly move to the vicinity of the specified position. Since the positioning member 11 only needs to control the coarse adjustment position, there is no need for precise adjustment. After the position adjustment of the positioning member 11 is completed, when the coarse adjustment component 21 has not yet cooperated with the positioning member 11, the operator drives the connecting component 32 through the rotating drive component 31, and the connecting component 32 drives the coarse adjustment component 21, and the coarse adjustment component 21 controls the actuator 13 to move quickly until the coarse adjustment component 21 cooperates with the positioning member 11, and the connecting component 32 is hindered by the positioning component and adjusts the connection relationship, disconnects the coarse adjustment component 21 from the rotating drive component 31, and connects the fine adjustment component 22 and the rotating drive component 31. At this time, the fine adjustment component 22 is driven by the rotating drive component 31 and the connecting component 32, and the fine adjustment component 22 controls the actuator 13 to move slowly. Since the adjustment speed of the fine adjustment component 22 is slow, it is easier to control the adjustment accuracy, and thus the actuator 13 can be moved to the specified position more quickly and effectively, and the actuator 13 pulls the diaphragm to control the flow of the diaphragm valve.

[0034] Reference Figure 2 , Figure 4 and Figure 5 : The coarse adjustment component 21 includes a contact member 211 and an elastic member. The contact member 211 is movably arranged in the frame 1. The contact member 211 is transmission-connected with the connecting component 32. The elastic member is used to control the resetting of the contact member 211. When the contact member 211 contacts the positioning member 11, the connecting component 32 connects the fine adjustment component 22 and the rotation drive component 31.

[0035] The present invention realizes the function of switching between the coarse adjustment state and the fine adjustment state through the positioning member 11 through the abutment 211 and the elastic member, so as to achieve the effect of automatically switching to the fine adjustment state when the positioning member 11 contacts the abutment 211. After the position of the positioning member 11 is adjusted by the linear drive component 12, when the coarse adjustment component 21 has not yet cooperated with the positioning member 11, the abutment 211 is in a reset state under the elastic force of the first elastic member 212, and the connecting component 32 connects the rotary drive component 31 and the coarse adjustment component 21. The operator drives the connecting component 32 through the rotary drive component 31, and the connecting component 32 drives the coarse adjustment component 21. The coarse adjustment component 21 controls the actuator 13 to move quickly, and at the same time, the coarse adjustment component 21 controls the abutment 211 to move synchronously until the abutment 211 and the positioning member 13 are in contact. 11 contacts and is blocked by the positioning assembly and stops moving, so that the abutment 211 moves relative to the actuator 13, and the connecting assembly 32 is driven by the abutment 211 to disconnect the coarse adjustment assembly 21 from the rotation drive assembly 31, and connect the fine adjustment assembly 22 and the rotation drive assembly 31. At this time, the fine adjustment assembly 22 is driven by the rotation drive assembly 31 and the connecting assembly 32, and the fine adjustment assembly 22 controls the actuator 13 to move slowly, moves the actuator 13 to the specified position, and pulls the diaphragm through the movement of the actuator 13 to control the flow of the diaphragm valve.

[0036] Reference Figure 3 , Figure 5 and Figure 6 : The connecting component 32 includes a control ring 321 and a docking ring 322. Both the control ring 321 and the docking ring 322 are provided with two. The two control rings 321 are transmission connected. The axis of the docking ring 322 and the axis of the control ring 321 are colinear, and the two control rings 321 are located between the two docking rings 322. The lower docking ring 322 is coaxially connected to the abutment 211. The control ring 321 is transmission connected to the driving end of the rotation drive component 31. The upper docking ring 322 and the lower docking ring 322 are transmission connected to the coarse adjustment component 21 and the fine adjustment component 22 respectively. When the control ring 321 abuts against the docking ring 322, the control ring 321 drives the docking ring 322 to rotate synchronously.

[0037] The present invention realizes the function of controlling the rotation drive assembly 31 to be connected to the coarse adjustment assembly 21 and the fine adjustment assembly 22 respectively through the control ring 321 and the docking ring 322, so as to achieve the effect of quickly switching the output of the rotation drive assembly 31. One end of the first elastic member 212 is transmission-connected to the control ring 321, and the abutting member 211 is coaxially connected to the docking ring 322 which is transmission-connected to the fine adjustment assembly 22; the control ring 321 is provided with a docking block 3211 and a second elastic member 3212, the docking block 3211 is slidably mounted on the control ring 321, and the two ends of the second elastic member 3212 are respectively connected to the docking block 3211 and the control ring 321, and the docking groove 3221 which cooperates with the docking block 3211 is provided on the docking ring 322, and when the docking block 3211 is plugged and matched with the docking groove 3221, the control ring 321 drives the docking block 3211 to rotate synchronously. In the process that the rotary drive assembly 31 drives the coarse adjustment assembly 21 and the coarse adjustment assembly 21 controls the actuator 13 to move downward, when the abutment member 211 contacts the positioning member 11, the movement of the abutment member 211 is restricted, the first elastic member 212 contracts, and the elastic force of the first elastic member 212 pushes the control ring 321, so that the docking ring 322 connected to the coarse adjustment assembly 21 and the control ring 321 corresponding thereto are separated, and the lower control ring 321 and the lower docking ring 322 are in abutment with each other. When the docking block 3211 is not aligned with the docking groove 3221, the docking block 3211 Under the squeeze of the docking ring 322, the second elastic member 3212 contracts, and with the drive of the rotary drive assembly 31, the control ring 321 continues to rotate, and the control ring 321 drives the docking block 3211 located thereon to rotate. When the docking block 3211 is aligned with the docking groove 3221, the docking block 3211 is inserted into the docking groove 3221 under the elastic force of the second elastic member 3212, and the control ring 321 drives the docking ring 322 to rotate synchronously through the plug-in cooperation between the docking block 3211 and the docking groove 3221, and the flow is adjusted by the fine-tuning assembly 22.

[0038] Reference Figure 1 and Figure 5 : A connecting ring 33 is provided on the first docking ring 322, and a connecting rod 34 is provided on the connecting ring 33. The two ends of the connecting rod 34 are respectively connected to the connecting ring 33 and the second connecting rod 34.

[0039] The present invention realizes the function of connecting the two docking rings 322 through the connecting ring 33 and the connecting rod 34, thereby achieving the effect of pushing the two docking rings 322 to move synchronously when the bottom docking ring 322 and the abutment member 211 abut against the positioning member 11. The rotation drive assembly 31 drives the two control rings 321 to move synchronously when driving the coarse adjustment assembly 21, and when the connecting assembly 32 connects the fine adjustment assembly 22 and the rotation drive assembly 31, the upper control ring 321 separates from the upper docking ring 322, and the lower docking ring 322 moves up, so that the lower docking ring 322 abuts against the control ring 321, and as the rotation drive assembly 31 drives the fine adjustment assembly 22, the fine adjustment assembly 22 continues to control the movement of the actuator 13, thereby compressing the first elastic member 212, and the limit rod is relative to the upper control ring 3 21 slides, and the moving range of the abutment member 211 and the lower docking ring 322 is slidably matched with the control ring 321 through the limit rod. With the driving of the fine adjustment component 22, the actuator 13 and the upper control ring 321 continue to move downward, and the first elastic member 212 contracts. When the docking ring 322 at the bottom contacts the adjacent control ring 321, it cannot be adjusted further. At this time, there is still a gap between the top control ring 321 and the adjacent docking ring 322 to avoid the situation where the two sets of control rings 321 and the docking ring 322 are abutted and stuck.

[0040] Reference Figure 2 - Figure 4 : The coarse adjustment component 21 includes a first screw 213 and a nut 214. The first screw 213 is rotatably set on the frame 1, and the first screw 213 is transmission-connected to the actuator 13. The nut 214 is fixedly installed on the frame 1, and the first screw 213 and the nut 214 are threadedly connected. The control ring 321 located above is coaxially connected to the top of the first screw 213.

[0041] The present invention realizes the function of driving the actuator 13 to move downward through the first screw 213 and the nut 214. The bottom end of the first screw 213 is rotatably connected to the actuator 13, and the connection between the first screw 213 and the actuator 13 is provided with a wear-resistant part for reducing anti-slip, and the wear-resistant part is preferably a graphite pad. When the first screw 213 moves downward, it will drive the abutment 211 and the docking ring 322 connected to the abutment 211 to rise and fall synchronously. When the rotary drive assembly 31 drives the control ring 321 to rotate, the abutment 211 is reset under the elastic force of the first elastic member 212, so that a certain distance is maintained between the abutment 211 and the control ring 321, and then the first screw 213 is pulled by the abutment 211, so that the docking ring 322 at the top of the first screw 213 abuts against the control ring 321 located above, and then the control ring 321 is driven to rotate by the rotary drive assembly 31, and the control ring 321 drives the coarse adjustment assembly 21. When the abutment member 211 abuts against the positioning member 11, the first screw rod 213 and the actuator 13 continue to move downward under the drive of the rotation drive assembly 31, thereby compressing the first elastic member 212, so that the abutment member 211 and the lower docking ring 322 move upward relative to the first screw rod 213, and the lower docking ring 322 pushes the upper docking ring 322 through the connecting rod 34 and the connecting ring 33, so that the upper docking ring 322 is separated from the control ring 321, completing the switching between the coarse adjustment state and the fine adjustment state, and then accurately adjusting the movement of the first screw rod 213 and the actuator 13 through the rotation drive assembly 31 and the fine adjustment assembly 22.

[0042] Reference Figure 2 and Figure 5 The fine adjustment component 22 includes a first support 221, a gear ring 222 and a rotating gear 223. The first support 221 can be slidably sleeved on the first screw 213. A first rotating shaft 2211 is rotatably set on the first support 221. The gear ring 222 is rotatably set on the lower docking ring 322. The rotating gear 223 is sleeved on the first rotating shaft 2211. The rotating gear 223 is meshed and connected with the gear ring 222. A reduction transmission component 23 is also provided on the frame 1. The first rotating shaft 2211 is transmission-connected to the first screw 213 through the reduction transmission component 23.

[0043] The present invention realizes the function of controlling the first screw 213 to rotate slowly through the first support 221, the first rotating shaft 2211, the gear ring 222 and the rotating gear 223. When the abutment member 211 abuts against the positioning member 11, the lower docking ring 322 abuts against the lower control ring 321, the rotation drive assembly 31 drives the lower docking ring 322 to rotate through the lower control ring 321, the lower docking ring 322 drives the gear ring 222 to rotate, the gear ring 222 drives the rotating gear 223 meshed with it to rotate, the rotating gear 223 drives the first rotating shaft 2211 to rotate, the first rotating shaft 2211 drives the first screw 213 to rotate slowly through the reduction transmission assembly 23, and the nut 214 is fixed, the rotation of the first screw 213 will make itself rise and fall relative to the nut 214, and then drive the actuator 13 to rise and fall.

[0044] Reference Figure 3 , Figure 7 and Figure 8 The reduction transmission assembly 23 includes a first bracket 231, a bevel gear 232, a second support 233, a second bracket 234 and a worm gear 235. The first bracket 231 is rotatably provided with a second rotating shaft 2311. Two bevel gears 232 are provided. The two bevel gears 232 are respectively sleeved on the first rotating shaft 2211 and the second rotating shaft 2311. The two bevel gears 232 are meshingly connected. The second support 233 is connected to the first support 221 through a rod. The second support 233 is rotatably provided with a third rotating shaft 2331. The third rotating shaft 2331 is transmission-connected with the second rotating shaft 2311. The second bracket 234 is provided on the first support 221. A worm 2341 is rotatably provided on the second bracket 234. The worm wheel 235 is sleeved on the first screw 213. The worm 2341 is meshingly connected with the worm wheel 235.

[0045] The present invention realizes the function of driving the first screw 213 to rotate through the first rotating shaft 2211 through the first bracket 231, the second rotating shaft 2311, the bevel gear 232, the second support 233, the third rotating shaft 2331, the second bracket 234, the worm 2341 and the worm wheel 235. A pulley 236 is sleeved on the second rotating shaft 2311, the third rotating shaft 2331 and the worm 2341, and a transmission belt 237 is sleeved on the pulley 236. The pulleys 236 on the second rotating shaft 2311 and the third rotating shaft 2331 are connected by the first transmission belt 237, and the pulleys 236 on the third rotating shaft 2331 and the worm 2341 are connected by the second transmission belt 237. When the lower docking ring 322 drives the gear ring 222 to rotate, the gear ring 222 drives the rotating gear 223 meshing with it to rotate, the rotating gear 223 drives the first rotating shaft 2211 to rotate, the first rotating shaft 2211 drives the second rotating shaft 2311 to rotate through the bevel gear 232, the second rotating shaft 2311 drives the third rotating shaft 2331 to rotate through the pulley 236 and the transmission belt 237, the third rotating shaft 2331 drives the worm 2341 to rotate through the pulley 236 and the transmission belt 237, the worm 2341 drives the worm wheel 235 meshing with it to rotate, the worm wheel 235 drives the first screw 213 to rotate, and the actuator 13 is adjusted to rise and fall.

[0046] Reference Figure 1 , Figure 2 and Fig. 9 : The rotation driving assembly 31 includes a rotating handle 311, and the rotating handle 311 is coaxially connected to the upper control ring 321.

[0047] The present invention realizes the function of driving the control ring 321 to rotate by rotating the handle 311. The rotation drive component 31 is preferably a rotating handle 311 or a servo motor, and a flow detection sensor is also provided in the diaphragm valve; the present invention selects the rotating handle 311, and when adjusting the flow, the operator manually rotates the rotating handle 311 to complete the coarse adjustment and fine adjustment, and the rotation speed can be adjusted automatically through manual adjustment. When performing coarse adjustment, the operator can quickly rotate the rotating handle 311 to increase the adjustment speed. When performing fine adjustment, the operator slowly rotates the rotating handle 311, and further reduces the rotation speed through the reduction transmission component 23, and then cooperates with the sensor to accurately adjust the flow.

[0048] Reference Figure 1 - Figure 3 and Fig.10 : The linear drive assembly 12 includes a rotary driver 121, a second screw 122 and a guide rod 123. The second screw 122 is rotatably arranged on the frame 1. The second screw 122 is threadedly connected to the positioning member 11. The guide rod 123 and the rotary driver 121 are arranged on the frame 1. The guide rod 123 is slidably matched with the positioning member 11. The rotary driver 121 is used to drive the second screw 122 to rotate.

[0049] The present invention realizes the function of driving the positioning member 11 to rise and fall through the rotary driver 121, the second screw 122 and the guide rod 123. The frame 1 is provided with a controller for human-machine interaction, and the rotary driver 121 is preferably a servo motor, which is electrically connected to the controller; before adjusting the flow rate, the operator first inputs the adjustment parameters into the controller, and the controller sends a signal to the rotary driver 121 according to the parameters. After receiving the signal, the rotary driver 121 drives the second screw 122 to rotate, and the second screw 122 drives the positioning member 11 threadedly connected thereto to move, and moves the positioning member 11 to the vicinity of the specified position, and then rotates the rotary handle 311 to adjust the flow rate.

[0050] Reference Figure 1 : A diaphragm valve based on a valve regulating mechanism, the diaphragm valve includes a connecting pipe 4, and the valve regulating mechanism is arranged on the connecting pipe 4.

[0051] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A valve adjustment mechanism, mounted on a diaphragm valve, characterized in that: The invention comprises a frame (1), an adjusting device (2) and a driving mechanism (3); a positioning member (11) and a linear driving component (12) for controlling the lifting of the positioning member (11) are movably arranged in the frame (1); an actuator (13) connected to a diaphragm is arranged in the frame (1); the adjusting device (2) comprises a coarse adjustment component (21) and a fine adjustment component (22); the coarse adjustment component (21) and the fine adjustment component (22) are both used to control the movement of the actuator (13); the driving mechanism (3) comprises a rotation driving component (31) and a connecting component (32); the rotation driving component (31) is connected to the coarse adjustment component (11) through the connecting component (32) and the connecting component (32) respectively. The invention relates to a rotary drive component (31) and a fine adjustment component (22). In a working state, the rotary drive component (31) drives the coarse adjustment component (21) through the connecting component (32), and the coarse adjustment component (21) controls the movement of the actuator (13). When the coarse adjustment component (21) contacts the positioning component (11), the connecting component (32) disconnects the connection between the coarse adjustment component (21) and the rotary drive component (31), and at the same time, the connecting component (32) connects the fine adjustment component (22) and the rotary drive component (31). The rotary drive component (31) drives the fine adjustment component (22) through the connecting component (32), and the fine adjustment component (22) controls the movement of the actuator (13).

2. A valve adjustment mechanism according to claim 1, characterized in that: The coarse adjustment component (21) comprises an abutment member (211) and an elastic member. The abutment member (211) is movably arranged in the frame (1). The abutment member (211) is transmission-connected to the connection component (32). The elastic member is used to control the reset of the abutment member (211). When the abutment member (211) abuts against the positioning member (11), the connection component (32) connects the fine adjustment component (22) and the rotation drive component (31).

3. A valve adjustment mechanism according to claim 2, characterized in that: The connecting assembly (32) comprises a control ring (321) and a docking ring (322). The control ring (321) and the docking ring (322) are each provided with two control rings (321). The two control rings (321) are transmission-connected. The axes of the docking rings (322) and the control rings (321) are colinear. The two control rings (321) are located between the two docking rings (322). The lower docking ring (322) is coaxially connected to the abutment member (211). The control ring (321) is transmission-connected to the driving end of the rotation drive assembly (31). The upper docking ring (322) and the lower docking ring (322) are transmission-connected to the coarse adjustment assembly (21) and the fine adjustment assembly (22) respectively. When the control ring (321) abuts against the docking ring (322), the control ring (321) drives the docking ring (322) to rotate synchronously.

4. A valve adjustment mechanism according to claim 3, characterized in that: A connecting ring (33) is provided on the first docking ring (322), a connecting rod (34) is provided on the connecting ring (33), and two ends of the connecting rod (34) are respectively connected to the lower docking ring (322) and the upper docking ring (322).

5. A valve adjustment mechanism according to claim 3, characterized in that: The coarse adjustment assembly (21) comprises a first screw rod (213) and a nut (214); the first screw rod (213) is rotatably arranged on the frame (1), and the first screw rod (213) is transmission-connected to the actuator (13); the nut (214) is fixedly mounted on the frame (1), and the first screw rod (213) and the nut (214) are threadedly connected; and a control ring (321) located above is coaxially connected to the top end of the first screw rod (213).

6. A valve adjustment mechanism according to claim 5, characterized in that: The fine adjustment assembly (22) comprises a first support (221), a gear ring (222) and a rotating gear (223); the first support (221) is slidably sleeved on the first screw rod (213); a first rotating shaft (2211) is rotatably arranged on the first support (221); the gear ring (222) is rotatably arranged on the lower docking ring (322); the rotating gear (223) is sleeved on the first rotating shaft (2211); the rotating gear (223) is meshedly connected with the gear ring (222); a reduction transmission assembly (23) is further provided on the frame (1); the first rotating shaft (2211) is transmission-connected to the first screw rod (213) via the reduction transmission assembly (23).

7. A valve adjustment mechanism according to claim 6, characterized in that: The reduction transmission assembly (23) comprises a first bracket (231), a bevel gear (232), a second support (233), a second bracket (234) and a worm gear (235). The first bracket (231) is rotatably provided with a second rotating shaft (2311). Two bevel gears (232) are provided. The two bevel gears (232) are respectively sleeved on the first rotating shaft (2211) and the second rotating shaft (2311). The two bevel gears (232) are meshed and connected. The second support (233) ) is connected to the first support (221) through a rod, a third rotating shaft (2331) is rotatably provided on the second support (233), the third rotating shaft (2331) and the second rotating shaft (2311) are transmission-connected, a second bracket (234) is arranged on the first support (221), a worm (2341) is rotatably provided on the second bracket (234), a worm wheel (235) is sleeved on the first screw (213), and the worm (2341) is meshingly connected with the worm wheel (235).

8. A valve adjustment mechanism according to claim 3, characterized in that: The rotary drive assembly (31) comprises a rotary handle (311), and the rotary handle (311) is coaxially connected to the upper control ring (321).

9. A valve adjustment mechanism according to claim 1, characterized in that: The linear drive assembly (12) comprises a rotary driver (121), a second screw rod (122) and a guide rod (123); the second screw rod (122) is rotatably arranged on the frame (1); the second screw rod (122) is threadedly connected to the positioning member (11); the guide rod (123) and the rotary driver (121) are arranged on the frame (1); the guide rod (123) and the positioning member (11) are slidably matched; and the rotary driver (121) is used to drive the second screw rod (122) to rotate.

10. A diaphragm valve based on a valve regulating mechanism according to any one of claims 1 to 9, characterized in that: The diaphragm valve comprises a connecting pipe (4), and a valve regulating mechanism is arranged on the connecting pipe (4).

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