Speed regulation digital valve and valve core control method

Abstract

The invention belongs to the technical field of fluid control equipment, and discloses a speed regulation digital valve and a valve element control method.The speed regulation digital valve comprises a speed regulation digital valve body, and a buffer mechanism is arranged at the bottom of the speed regulation digital valve body; the buffering mechanism comprises a buffering ring, bearing bins are fixedly installed at the top and the bottom of the buffering ring respectively, the top of the upper bearing bin communicates with a flow channel in the bottom of the speed regulation digital valve body, and a first buffering assembly, a second buffering assembly and a third buffering assembly are arranged on the inner wall of the buffering ring. Through cooperation of the first buffer assembly, the second buffer assembly and the third buffer assembly, multi-stage absorption and dispersion of fluid impact energy are achieved, the initial dispersion of fluid in primary contact with a shifting plate, further absorption of a rubber block and a spring damping rod assembly in the circular plate sliding process and final energy release of a spiral flow channel are achieved, and the energy absorption efficiency is improved. Each stage of buffering effectively slows down direct impact of fluid on the valve, and stability and durability of equipment are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fluid control equipment, in particular to a speed regulating digital valve and a valve core control method. Background Art

[0002] The speed-regulating digital valve is a key component that precisely controls fluid flow and pressure through digital signals. It is widely used in industrial automation, hydraulic systems, process control and other fields. Its core advantage lies in the combination of high-precision sensors, microprocessors and advanced control algorithms, which can achieve fast response, adaptive adjustment and remote communication functions. Compared with traditional mechanical valves or analog control valves, the speed-regulating digital valve significantly improves the control accuracy and dynamic performance through technologies such as segmented valve cores, closed-loop feedback and PWM (pulse width modulation), meeting the needs for refined regulation of fluid media in complex industrial scenarios.

[0003] However, when the valve is closed quickly, the instantaneous change in the momentum of the fluid will cause a series of serious problems. Due to the inertia of the fluid, when the valve is closed quickly, the fluid is quickly cut off, and its kinetic energy is converted into pressure energy in a very short time, resulting in a sharp increase in the pressure in the pipeline. This pressure increase usually appears in the form of a shock wave, which may have a serious impact on the sealing performance of the equipment. Under high-pressure shock, the sealing surface of the equipment may be excessively squeezed or deformed, resulting in sealing failure, which will not only cause fluid leakage, but may also further aggravate the wear and damage of the equipment, so it needs to be improved and optimized. Summary of the invention

[0004] In order to solve the problem in the above background technology that when the valve is closed quickly, the shock wave caused by the change in fluid momentum may seriously damage the sealing performance of the equipment, causing leakage and increased wear, the present invention provides a speed regulating digital valve and a valve core control method.

[0005] To achieve the above object, the present invention provides the following technical solution: a speed regulating digital valve, comprising a speed regulating digital valve body, wherein a buffer mechanism is provided at the bottom of the speed regulating digital valve body; The buffer mechanism comprises a buffer ring, and receiving bins are fixedly mounted on the top and bottom of the buffer ring respectively, the top of the receiving bin is connected to the flow channel at the bottom of the speed regulating digital valve body, and the inner wall of the buffer ring is provided with buffer assembly 1, buffer assembly 2 and buffer assembly 3; The buffer component 2 includes a mounting groove opened on the inner wall of the buffer ring, a circular plate is arranged inside the buffer ring, a limiting ring is fixedly sleeved on the outer wall of the circular plate, the limiting ring is adapted to the mounting groove and is slidably connected to the mounting groove, and a plurality of rubber blocks are arranged on one side of the limiting ring that is close to the side of the receiving bin, and the plurality of rubber blocks are designed to be distributed equidistantly around the circumference.

[0006] Preferably, a plurality of circular holes are formed on the outer wall of the circular plate, and the plurality of circular holes penetrate the circular plate and are distributed at equal distances.

[0007] Preferably, a plurality of connection components are arranged on the inner wall of the installation groove, and the plurality of connection components are respectively arranged in the middle of two adjacent rubber blocks; The connecting assembly includes a connecting rod hingedly installed at the bottom of the limiting ring, a moving block is hingedly installed at the other end of the connecting rod, a rectangular frame is fixedly installed on the inner wall of the installation groove, and the outer wall of the moving block is slidably connected to the inside of the rectangular frame.

[0008] Preferably, two sides of the moving block are elastically connected to the inner wall of the adjacent rectangular frame through two spring damping rod assemblies respectively.

[0009] Preferably, the buffer component 1 includes a placement groove opened on the inner wall of the upper receiving bin, and a plurality of toggle plates are hingedly mounted on the inner wall of the placement groove, and the plurality of toggle plates are designed to be equidistantly distributed around the circumference.

[0010] Preferably, the tops of several of the toggle plates are hinged to the placement grooves in an L-shape, and the bottoms of several of the toggle plates are in an inverted trapezoidal shape with the inner sides thereof being designed as bevel edges.

[0011] Preferably, the buffer component three comprises a hollow tube fixedly mounted on the bottom of the receiving bin below, and a spiral flow channel is arranged inside the hollow tube.

[0012] Preferably, the plurality of toggle plates are elastically connected to the inner wall of the upper receiving bin via a plurality of springs, respectively, and the axes of the plurality of springs are at right angles to the connected toggle plates.

[0013] Preferably, the outer wall of the spiral flow channel is fixedly connected to the inner wall of the hollow tube, and the spiral flow channel is spiral-shaped.

[0014] A speed regulating digital valve core control method, the specific steps of the method include: S1, setting the preset position of the valve core: determining the preset position of the valve core of the speed regulating digital valve; S2, detect the actual position of the valve core: detect the actual position of the valve core in real time, and obtain the current position information of the valve core through high-precision sensors and encoders; S3, compare position deviation and output control signal: after obtaining the actual position of the valve core, compare it with the preset position to obtain the position deviation; according to the position deviation, the controller outputs a control signal to drive the motor and actuator to adjust the position of the valve core; S4, adjust the valve core position: after the control signal is sent to the motor and actuator, the device adjusts the position of the valve core according to the size and direction of the signal; during the adjustment process, ensure that the movement of the valve core is smooth and accurate, and does not introduce excessive mechanical stress and vibration; S5, monitoring and feedback adjustment: monitor the entire control process and make feedback adjustments based on actual conditions; including monitoring the actual position of the valve core, flow changes, and system stability indicators; if the deviation is too large, the controller will adjust the control strategy in time to ensure the stable operation of the system, and gradually optimize the control parameters through continuous feedback and adjustment.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes multi-stage absorption and dispersion of fluid impact energy through the cooperation of buffer component 1, buffer component 2 and buffer component 3, from the initial dispersion of the fluid when it first contacts the toggle plate, to the further absorption of the rubber block and the spring damping rod assembly during the sliding process of the circular plate, to the final energy release of the spiral flow channel, each level of buffering effectively reduces the direct impact of the fluid on the valve, thereby improving the stability and durability of the equipment.

[0016] The inverted trapezoidal bevel design of the toggle plate, the distribution of circular holes on the circular plate and the rotational guidance of the spiral flow channel all contribute to the uniform distribution of the fluid and the effective conversion of kinetic energy, thereby avoiding equipment damage caused by local pressure peaks and excessive flow rates.

[0017] The present invention can absorb impact energy and reduce mechanical vibration through the elastic deformation of the spring and the rubber block; and the design of the spiral flow channel further weakens the intensity of the shock wave and reduces noise by extending the fluid release time and converting the fluid kinetic energy into rotational motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of a partial front cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the front cross-sectional structure of the buffer mechanism of the present invention; Figure 5 For the present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part; Figure 6 This is a schematic diagram of the explosion structure of the buffer mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the toggle plate of the present invention; Figure 8 This is a schematic diagram of the internal structure of the second front section of the buffer component of the present invention; Fig. 9 This is a schematic diagram of the combined structure of the circular plate, the limiting ring and the circular hole of the present invention; Fig.10 It is a schematic diagram of the matching structure of the connection components of the present invention.

[0019] In the figure: 1. speed regulating digital valve body; 2. buffer ring; 201. receiving chamber; 2011. placement groove; 202. installation groove; 3. round plate; 301. limit ring; 302. round hole; 4. connecting rod; 401. moving block; 5. rectangular frame; 501. spring damping rod assembly; 6. rubber block; 7. toggle plate; 701. spring; 8. hollow tube; 801. spiral flow channel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 10 As shown, the present invention provides a speed regulating digital valve, comprising a speed regulating digital valve body 1, and a buffer mechanism is arranged at the bottom of the speed regulating digital valve body 1; The buffer mechanism includes a buffer ring 2, and receiving bins 201 are fixedly installed on the top and bottom of the buffer ring 2, respectively. The top of the upper receiving bin 201 is connected to the flow channel at the bottom of the speed regulating digital valve body 1, and the inner wall of the buffer ring 2 is provided with buffer components 1, 2 and 3; The second buffer component includes a mounting groove 202 opened on the inner wall of the buffer ring 2, a circular plate 3 is arranged inside the buffer ring 2, a limiting ring 301 is fixedly sleeved on the outer wall of the circular plate 3, the limiting ring 301 is adapted to the mounting groove 202 and is slidably connected to the mounting groove 202, a plurality of rubber blocks 6 are arranged on one side of the limiting ring 301 and the side close to the receiving bin 201, and the plurality of rubber blocks 6 are designed to be distributed in a circle with equal distances, and a plurality of circular holes 302 are opened on the outer wall of the circular plate 3, and the plurality of circular holes 302 all penetrate the circular plate 3 and are designed to be distributed in an equal distance.

[0022] By setting the buffer mechanism, the stability and durability of the device are enhanced. A closed cavity is formed by the buffer ring 2 and the upper and lower receiving chambers 201. This structure provides an additional pressure release space for the fluid. When the speed regulating digital valve body 1 is in a closed state, the fluid needs to flow out through the limit ring 301, thereby prolonging the pressure release time, thereby slowing down the direct impact of the fluid on the device, and reducing the vibration and noise of the valve. The mounting groove 202 on the inner wall of the buffer ring 2 is slidably connected with the circular plate 3 and the limit ring 301 on the outer wall thereof. This design not only ensures the stable movement of the circular plate 3 in the buffer ring 2, but also enables the circular plate 3 to be adaptively adjusted according to the pressure change of the fluid. At the same time, a plurality of rubber blocks 6 with equal distances and circumferential distribution are arranged on the side where the limit ring 301 and the receiving chamber 201 are close to each other. When the fluid impacts the valve, these rubber blocks 6 can expand rapidly and absorb a large amount of impact energy, thereby protecting the circular plate 3 from damage. A plurality of circular holes 302 with equal distances and distributed on the outer wall of the circular plate 3 also contribute to the uniform distribution and flow of the fluid.

[0023] like Figures 8 to 10 As shown, a plurality of connection components are arranged on the inner wall of the installation groove 202, and the plurality of connection components are arranged in the middle of two adjacent rubber blocks 6 respectively; The connecting assembly includes a connecting rod 4 hingedly installed at the bottom of the limiting ring 301, a moving block 401 is hingedly installed at the other end of the connecting rod 4, a rectangular frame 5 is fixedly installed on the inner wall of the mounting groove 202, the outer wall of the moving block 401 is slidably connected to the inside of the rectangular frame 5, and the two sides of the moving block 401 are elastically connected to the inner wall of the adjacent rectangular frame 5 through two spring damping rod assemblies 501 respectively.

[0024] By hingedly installing the connecting rod 4 at the bottom of the limit ring 301, the limit ring 301 is effectively restricted to slide in the installation groove 202, ensuring that the limit ring 301 can maintain movement within a predetermined trajectory when impacted by fluid, preventing it from affecting the normal operation of the equipment due to excessive displacement or turning over and rotating, thereby improving the stability and reliability of the entire device. Secondly, the matching design of the moving block 401 and the spring damping rod assembly 501 in the connecting component enables the connecting rod 4 to drive the moving block 401 to move in the rectangular frame 5 when the circular plate 3 is impacted by fluid, and the spring damping rod assembly 501 uses its elastic buffering effect to effectively absorb and disperse the impact energy of the fluid on the circular plate 3, reduce the direct impact of the fluid on the circular plate 3, and extend the service life.

[0025] like Figures 4 to 7As shown, the buffer component 1 includes a receiving groove 2011 opened on the inner wall of the upper receiving bin 201, and a plurality of toggle plates 7 are hingedly installed on the inner wall of the receiving groove 2011. The plurality of toggle plates 7 are designed to be equidistantly distributed in a circle, and the tops of the plurality of toggle plates 7 are hinged to the receiving groove 2011 at an L-shape, and the bottoms of the plurality of toggle plates 7 are all in an inverted trapezoidal shape and the inner side is designed as a bevel, and the plurality of toggle plates 7 are elastically connected to the inner wall of the upper receiving bin 201 respectively by a plurality of springs 701, and the axes of the plurality of springs 701 are at right angles to the connected toggle plates 7.

[0026] By setting a buffer component 1, through the cooperation of the toggle plate 7 and the spring 701, the effective absorption and dispersion of the fluid impact energy is achieved. When the fluid enters the receiving chamber 201 above, it will first contact with a number of toggle plates 7 distributed at equal distances around the circumference. The top of the toggle plate 7 is hinged with the placement groove 2011, and the bottom is designed in an inverted trapezoidal shape, and the side facing inward is a bevel, so that the toggle plate 7 can be more easily moved when impacted by the fluid. The toggle plate 7 is elastically connected to the inner wall of the receiving chamber 201 through the spring 701, and the axis of the spring 701 is at a right angle to the toggle plate 7. When the fluid impacts the toggle plate 7, the spring 701 will be compressed, thereby absorbing a large amount of water pressure energy, thereby effectively slowing down the direct impact of the fluid on the receiving chamber 201, and improving the stability and durability of the device. Since the bottom of the toggle plate 7 is designed in an inverted trapezoidal shape with the bevel facing inward, the fluid can be more easily dispersed and guided when impacting the toggle plate 7, further reducing the impact of the impact energy on the device; like Figure 4 , Figure 6 As shown, the buffer component three includes a hollow tube 8 fixedly installed at the bottom of the receiving bin 201 below, a spiral flow channel 801 is arranged inside the hollow tube 8, the outer wall of the spiral flow channel 801 is fixedly connected to the inner wall of the hollow tube 8, and the spiral flow channel 801 is spiral.

[0027] By setting the spiral flow channel 801, its outer wall is tightly and fixedly connected to the inner wall of the hollow tube 8, thereby ensuring the stable flow of the fluid. The spiral design allows the fluid to generate a rotational motion when passing through. Through centrifugal force, when the fluid enters the spiral flow channel 801 of the hollow tube 8 at a certain speed, due to the spiral shape of the spiral flow channel 801, the fluid is forced to rotate forward along the spiral path. The rotation process effectively disperses the kinetic energy of the fluid, reduces the direct impact of the fluid on the equipment and downstream equipment, and can also reduce noise and vibration, thereby extending the service life of the equipment.

[0028] A speed regulating digital valve core control method, the specific steps of the method include: S1, set the preset position of the valve core: determine the preset position of the valve core of the speed regulating digital valve; it is usually determined based on factors such as process requirements, flow requirements and system stability; when setting the preset position, ensure that the position can meet the operating requirements and has a certain degree of stability and reliability; S2, detect the actual position of the valve core: detect the actual position of the valve core in real time, and obtain the current position information of the valve core through high-precision sensors and encoders; detecting the actual position of the valve core is an important part of the control process because it directly affects subsequent control decisions and actions; S3, compare position deviation and output control signal: after obtaining the actual position of the valve core, compare it with the preset position to obtain the position deviation; the deviation value reflects the difference between the current position of the valve core and the expected position; according to the position deviation, the controller outputs a control signal; the control signal is usually an electrical signal, driving the motor and actuator to adjust the position of the valve core; S4, adjust the valve core position: after the control signal is sent to the motor and actuator, the device adjusts the position of the valve core according to the size and direction of the signal; by changing the relative position between the valve core and the valve sleeve, the flow rate can be accurately adjusted; during the adjustment process, ensure that the movement of the valve core is smooth and accurate, and does not introduce excessive mechanical stress and vibration; S5, monitoring and feedback adjustment: monitor the entire control process and make feedback adjustments based on actual conditions; including monitoring the actual position of the valve core, flow changes and system stability indicators; if the deviation is too large, the controller will adjust the control strategy in time to ensure the stable operation of the system, and through continuous feedback and adjustment, gradually optimize the control parameters to improve the control accuracy and response speed of the system.

[0029] The working principle and use process of the present invention: When the speed regulating digital valve body 1 starts to close, the fluid pressure rises suddenly due to the valve core cutting off the flow channel, and the high-pressure fluid enters the receiving chamber 201 at the top of the buffer ring 2 through the valve bottom flow channel; at this time, the fluid first contacts the buffer component 1: the fluid impacts the toggle plate 7 on the inner wall of the upper receiving chamber 201; the inverted trapezoidal bevel design of the toggle plate 7 decomposes the impact force into lateral and longitudinal components, and the spring 701 absorbs energy due to compression deformation; through the swing of the toggle plate 7 and the elastic deformation of the spring 701, the kinetic energy of the fluid is initially dispersed, reducing the direct impact on the receiving chamber 201; After the fluid is evenly distributed through the circular holes 302 on the circular plate 3, it pushes the circular plate 3 to slide along the mounting groove 202; the sliding connection between the limit ring 301 and the mounting groove 202 ensures the stable movement of the circular plate 3 to avoid deviation; at this time: the connecting rod 4 at the bottom of the limit ring 301 drives the moving block 401 to slide in the rectangular frame 5, and the spring damping rod assembly 501 further absorbs the impact energy through elastic deformation; the fluid pressure forces the rubber block 6 between the limit ring 301 and the receiving chamber 201 to compress, and the remaining impact energy is absorbed by the compression deformation of the rubber block 6, thereby preventing the circular plate 3 from being damaged by instantaneous high pressure; The fluid after the first two levels of buffering enters the receiving chamber 201 below, and completes the final energy release through the buffer component three: the fluid enters the spiral flow channel 801 of the hollow tube 8, and forms a rotating flow guided by the spiral structure; the centrifugal force forces the fluid kinetic energy to be converted into a rotating motion, greatly reducing the flow rate and local pressure peak; the path of the spiral flow channel 801 prolongs the fluid release time, further weakens the shock wave intensity, and reduces vibration and noise; Finally, the fluid releases pressure through the closed cavity formed by the buffer ring 2 and the receiving chamber 201 , and the pressure in the flow channel is gradually balanced; the circular plate 3 is reset under the elastic action of the spring damping rod assembly 501 and the rubber block 6 .

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A speed regulating digital valve, comprising a speed regulating digital valve body (1), characterized in that: A buffer mechanism is provided at the bottom of the speed regulating digital valve body (1); The buffer mechanism comprises a buffer ring (2), the top and bottom of the buffer ring (2) are respectively fixedly mounted with receiving bins (201), the top of the receiving bin (201) is connected to the flow passage at the bottom of the speed regulating digital valve body (1), and the inner wall of the buffer ring (2) is provided with a buffer component 1, a buffer component 2 and a buffer component 3; The buffer component 2 comprises a mounting groove (202) formed on the inner wall of the buffer ring (2); a circular plate (3) is arranged inside the buffer ring (2); a limiting ring (301) is fixedly sleeved on the outer wall of the circular plate (3); the limiting ring (301) is adapted to the mounting groove (202) and is slidably connected to the mounting groove (202); a plurality of rubber blocks (6) are arranged on one side of the limiting ring (301) and a side close to the receiving bin (201); the plurality of rubber blocks (6) are designed to be distributed equidistantly around the circumference.

2. The speed regulating digital valve according to claim 1, characterized in that: A plurality of circular holes (302) are provided on the outer wall of the circular plate (3), and the plurality of circular holes (302) all penetrate the circular plate (3) and are distributed at equal distances.

3. The speed regulating digital valve according to claim 1, characterized in that: A plurality of connection components are arranged on the inner wall of the installation groove (202), and the plurality of connection components are respectively arranged in the middle of two adjacent rubber blocks (6); The connection assembly comprises a connection rod (4) hingedly mounted on the bottom of a limiting ring (301); a moving block (401) is hingedly mounted on the other end of the connection rod (4); a rectangular frame (5) is fixedly mounted on the inner wall of the mounting groove (202); and an outer wall of the moving block (401) is slidably connected to the inside of the rectangular frame (5).

4. The speed regulating digital valve according to claim 3, characterized in that: The two sides of the moving block (401) are elastically connected to the inner wall of the adjacent rectangular frame (5) via two spring damping rod assemblies (501).

5. The speed regulating digital valve according to claim 1, characterized in that: The buffer component 1 comprises a placement groove (2011) formed on the inner wall of the upper receiving bin (201), and a plurality of toggle plates (7) are hingedly mounted on the inner wall of the placement groove (2011), wherein the plurality of toggle plates (7) are designed to be equidistantly distributed around the circumference.

6. The speed regulating digital valve according to claim 5, characterized in that: The tops of the plurality of toggle plates (7) are hinged to the placement groove (2011) at an L-shape, and the bottoms of the plurality of toggle plates (7) are all in an inverted trapezoidal shape, and the inner sides are each designed with a beveled edge.

7. The speed regulating digital valve according to claim 1, characterized in that: The buffer component three comprises a hollow tube (8) fixedly mounted at the bottom of the receiving bin (201) below, and a spiral flow channel (801) is arranged inside the hollow tube (8).

8. The speed regulating digital valve according to claim 5, characterized in that: The plurality of toggle plates (7) are elastically connected to the inner wall of the upper receiving bin (201) via a plurality of springs (701), and the axes of the plurality of springs (701) are at right angles to the connected toggle plates (7).

9. The speed regulating digital valve according to claim 7, characterized in that: The outer wall of the spiral flow channel (801) is fixedly connected to the inner wall of the hollow tube (8), and the spiral flow channel (801) is in a spiral shape.

10. A method for controlling a valve core of a speed regulating digital valve, applied to a speed regulating digital valve as claimed in any one of claims 1 to 9, characterized in that: The specific steps of the method include: S1, setting the preset position of the valve core: determining the preset position of the valve core of the speed regulating digital valve; S2, detect the actual position of the valve core: detect the actual position of the valve core in real time, and obtain the current position information of the valve core through high-precision sensors and encoders; S3, compare position deviation and output control signal: after obtaining the actual position of the valve core, compare it with the preset position to obtain the position deviation; According to the position deviation, the controller outputs a control signal to drive the motor and actuator to adjust the position of the valve core; S4, adjust the valve core position: after the control signal is sent to the motor and actuator, the device adjusts the position of the valve core according to the size and direction of the signal; during the adjustment process, ensure that the movement of the valve core is smooth and accurate, and does not introduce excessive mechanical stress and vibration; S5, monitoring and feedback adjustment: monitor the entire control process and make feedback adjustments based on actual conditions; including monitoring the actual position of the valve core, flow changes, and system stability indicators; if the deviation is too large, the controller will adjust the control strategy in time to ensure the stable operation of the system, and gradually optimize the control parameters through continuous feedback and adjustment.

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