Valve body cleaning structure and valve

Abstract

The invention discloses a valve body cleaning structure and a valve, and relates to the technical field of valve body self-cleaning, and the valve body cleaning structure comprises a mounting seat, a rotating assembly and a cleaning assembly; the mounting seat is mounted on the inner wall of the valve body; the rotating assembly comprises a rotating driving part, a first telescopic driving part and a rotating shaft; the rotating driving part is arranged on the mounting seat, the first telescopic driving part is in transmission connection with the output end of the rotating driving part, and the rotating shaft is in transmission connection with the output end of the first telescopic driving part; the cleaning assembly comprises a second telescopic driving piece, a telescopic rod and a cleaning brush, the second telescopic driving piece is arranged at the end, away from the mounting base, of the rotating shaft, the telescopic rod is in transmission connection to the output end of the second telescopic driving piece, and the cleaning brush is connected to the end, away from the second telescopic driving piece, of the telescopic rod; an included angle is formed between a straight line extending in the length direction of the rotating shaft and a straight line extending in the length direction of the telescopic rod; the cleaning brush can clean the inner wall of the valve body. According to the technical scheme, the conveying efficiency of the valve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve body self-cleaning, in particular to a valve body cleaning structure and a valve. BACKGROUND

[0002] As a key control component in a fluid conveying system, a valve is widely used in many fields such as petroleum, chemical industry, power, water supply and drainage, ship, medicine, food, etc. A valve cavity for fluid passing is formed in the valve body.

[0003] In the long-term operation process, impurities such as silt, scale, rust, biofilm and crystalline particles contained in the fluid are easy to gradually deposit, adhere and even harden on the inner wall of the valve cavity, resulting in the decrease of flow passage cross-sectional area and the increase of flow resistance. In severe cases, it will cause the valve to jam, lose the function of opening and closing, damage the sealing surface, and even completely block, thereby affecting the conveying efficiency of the entire pipeline system. SUMMARY

[0004] The main purpose of the present application is to provide a valve body cleaning structure and a valve, which aims to improve the conveying efficiency of the valve.

[0005] To achieve the above-mentioned purpose, the valve body cleaning structure provided by the present application comprises: a mounting seat configured to be mounted on the inner wall of the valve body; a rotating assembly comprising a rotating drive, a first telescopic drive and a rotating shaft; the rotating drive is arranged on the mounting seat, the first telescopic drive is transmissionally connected to the output end of the rotating drive, and the rotating shaft is transmissionally connected to the output end of the first telescopic drive; and a cleaning assembly comprising a second telescopic drive, a telescopic rod and a cleaning brush; the second telescopic drive is arranged at one end of the rotating shaft away from the mounting seat, the telescopic rod is transmissionally connected to the output end of the second telescopic drive, and the cleaning brush is connected to one end of the telescopic rod away from the second telescopic drive; a straight line extending along the length direction of the rotating shaft and a straight line extending along the length direction of the telescopic rod form an included angle; the cleaning brush is configured to be able to clean the inner wall of the valve body.

[0006] In an embodiment, the cleaning assembly further comprises an elastic member, the elastic member is arranged at one end of the telescopic rod away from the second telescopic drive, and the cleaning brush is arranged at one end of the elastic member away from the telescopic rod.

[0007] In an embodiment, the cleaning assembly further comprises a sliding rod, the telescopic rod is formed with a sleeve ring; the sliding rod is arranged on the cleaning brush, and the sleeve ring is sleeved on the sliding rod to slide relative to the sliding rod.

[0008] In an embodiment, the cleaning assembly further comprises a pressure sensor, which is arranged on the side of the cleaning brush facing the telescopic rod, and is electrically connected to the second telescopic driving element.

[0009] In an embodiment, the rotating assembly further comprises a bracket, which is drivingly connected to the rotating shaft, and is configured to be mounted on the inner wall of the valve body to support the rotating shaft.

[0010] In an embodiment, the rotating assembly further comprises a bearing, which is arranged on the bracket and sleeved on the rotating shaft.

[0011] In an embodiment, the elastic member is a spring.

[0012] The application further provides a valve comprising a valve body and the valve body cleaning structure as described above, wherein the valve body is formed with a water inlet, a valve cavity and a water outlet which are in communication, and the mounting seat is arranged on the cavity wall of the valve cavity.

[0013] In an embodiment, the valve further comprises a sleeve, which is arranged on the mounting seat, and the opening of the sleeve is arranged towards the water outlet; and part of the rotating driving element, the first telescopic driving element and the rotating shaft are located in the sleeve.

[0014] In an embodiment, the valve further comprises a flow meter, which is arranged on the valve body and located at the water outlet; and the flow meter is electrically connected to the rotating driving element, the first telescopic driving element and the second telescopic driving element.

[0015] In the technical scheme of the present application, the valve body cleaning structure comprises a mounting seat, a rotating assembly and a cleaning assembly; the mounting seat is configured to be mounted to the inner wall of the valve body; the rotating assembly comprises a rotating drive, a first telescopic drive and a rotating shaft; the rotating drive is arranged on the mounting seat, the first telescopic drive is drivingly connected to the output end of the rotating drive, and the rotating shaft is drivingly connected to the output end of the first telescopic drive; the cleaning assembly comprises a second telescopic drive, a telescopic rod and a cleaning brush; the second telescopic drive is arranged on one end of the rotating shaft away from the mounting seat, the telescopic rod is drivingly connected to the output end of the second telescopic drive, and the cleaning brush is connected to one end of the telescopic rod away from the second telescopic drive; a straight line extending along the length direction of the rotating shaft and a straight line extending along the length direction of the telescopic rod form an included angle; the cleaning brush is configured to be able to clean the inner wall of the valve body. In the technical scheme of the present application, during the cleaning process, the rotating drive drives the rotating shaft to rotate, so that the cleaning brush draws a circular arc track on the inner wall of the valve body; at the same time, the first telescopic drive controls the extension and contraction of the rotating shaft to change the radial position of the cleaning brush; the second telescopic drive adjusts the length of the telescopic rod to further adjust the spatial position of the cleaning brush; through the combination of the three kinds of movements, the cleaning brush can cover most of the area of the inner wall of the valve body, and comprehensive cleaning is realized; after being cleaned by the valve body cleaning structure, the residual impurities in the valve body basically cannot reduce the flow rate of the fluid in the valve cavity, so that the conveying efficiency of the valve can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0017] Figure 1 The structural schematic diagram of an embodiment of the valve provided by the present application is shown in the figure. Figure 2 The structural schematic diagram of another embodiment of the valve is shown in the figure. Figure 3 The structural schematic diagram of another embodiment of the valve is shown in the figure. Figure 2 The sectional view along A-A is shown in the figure. Figure 4 The structural schematic diagram of another embodiment of the valve is shown in the figure. Figure 3 The enlarged view of part B in the figure.

[0018] Explanation of reference numerals:

[0019] The implementation of the purpose of the present application, functional characteristics and advantages will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] It should be noted that if the embodiments of the present application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, motion condition, etc. between components in a certain posture, and if the certain posture changes, the directionality indication also changes accordingly.

[0022] In addition, if the embodiments of the present application involve descriptions such as “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel schemes are included, for example, “A and / or B” includes A scheme, or B scheme, or A and B schemes are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0023] In the traditional existing valve operating environment, impurities carried by the fluid medium continuously deposit on the inner wall of the valve cavity to form a hardened layer, resulting in a nonlinear reduction in the effective cross-sectional area of the flow passage. The interfacial bonding force between the deposit and the metal matrix increases exponentially with the running time, causing the local turbulence intensity of the flow passage to rise significantly, resulting in a pressure fluctuation amplitude exceeding the design threshold of the system. Such dynamic changes directly weaken the opening and closing accuracy of the valve actuator, causing the contact stress distribution of the sealing pair to be unstable, and accelerating the wear rate of the sealing surface.

[0024] For example, in the application of high-pressure ball valves in petroleum transportation systems, when the mass concentration of medium containing ferrous sulfide particles and asphaltene colloid mixture reaches 3.2 kg per cubic meter, a composite deposition layer with a thickness of more than 2 mm is formed on the valve cavity flow surface after continuous operation for 1200 hours. The deposition layer causes the flow resistance coefficient of a DN300 valve to rise from the initial 0.018 to 0.035, and the peak value of the driving torque requirement reaches 187% of the rated value. Under this working condition, the actuator frequently triggers the overload protection mechanism, causing the flow regulation process to appear stepwise fluctuations, and the system pressure control accuracy decreases to a ±12% deviation range.

[0025] If the above problems are not solved, the positive feedback effect of the thickness of the deposited layer and the flow resistance coefficient will cause the valve dynamic characteristics to completely deviate from the design working curve. The continuous degradation of the flow passage cross section may cause water hammer effect, making the pipeline system bear alternating stress exceeding the material fatigue limit. Under such working conditions, the contact failure probability of the valve sealing pair will rise to a critical level, which may cause toxic medium leakage accidents. At the same time, the hard particles generated by the peeling of the deposits will enter the downstream equipment, causing the cavitation erosion damage rate of the centrifugal pump impeller to increase by 4.7 times, significantly shortening the overhaul period of the key equipment.

[0026] In the face of the above problems, the application first considers how to establish a dynamic cleaning mechanism to deal with the continuous deposition of composite pollutants. The traditional fixed scraping device cannot adapt to the change of the thickness of the deposited layer, and the rigid contact is easy to damage the substrate surface. In this regard, the application attempts to combine rotary motion with multidirectional displacement to improve the cleaning coverage by superimposing the motion trajectories. Further research shows that there is a gradient difference in the adhesion strength of the deposits in different areas of the valve cavity, and a single pressure mode cannot achieve effective peeling. Therefore, the application conceives to use a hierarchical driving structure to make the cleaning unit not only rotate as a whole but also locally adjust the posture. The synergistic effect of axial extension and radial expansion can form a three-dimensional cleaning path, and the angle-variable contact mode can adapt to complex surface topography. By simulating the mechanical properties of the deposited layer, it is finally determined to use a composite driving mechanism with spatial position adjustment capability.

[0027] To solve the above problems, the application provides a valve body cleaning structure 1000, Figure 3 and Figure 4 The structure schematic diagram of the embodiment of the valve body cleaning structure 1000 provided by the application is shown in the figure.

[0028] Please refer to Figure 3 and Figure 4 The application provides a valve body cleaning structure 1000, which comprises a mounting seat 1, a rotating assembly and a cleaning assembly; the mounting seat 1 is configured to be mounted on the inner wall of a valve body 4; the rotating assembly comprises a rotating driving member 21, a first extension driving member 22 and a rotating shaft 23; the rotating driving member 21 is arranged on the mounting seat 1, the first extension driving member 22 is drivingly connected to the output end of the rotating driving member 21, and the rotating shaft 23 is drivingly connected to the output end of the first extension driving member 22; the cleaning assembly comprises a second extension driving member 31, an extension rod 32 and a cleaning brush 33; the second extension driving member 31 is arranged at one end of the rotating shaft 23 away from the mounting seat 1, the extension rod 32 is drivingly connected to the output end of the second extension driving member 31, and the cleaning brush 33 is connected to one end of the extension rod 32 away from the second extension driving member 31; a straight line extending along the length direction of the rotating shaft 23 and a straight line extending along the length direction of the extension rod 32 form an included angle; the cleaning brush 33 is configured to be able to clean the inner wall of the valve body 4.

[0029] The mounting seat 1 refers to a support structure for fixing to the inner wall of the valve body 4, which can be achieved by welding or bolt connection, and functions to provide a stable installation basis for the rotating assembly and the cleaning assembly, and to ensure the structural stability during cleaning. The rotating drive 21 refers to a power device for driving the rotation of the rotating shaft 23, which can be achieved by a servo motor or a stepping motor, and functions to drive the cleaning assembly to move circumferentially along the inner wall of the valve body 4 to expand the cleaning range. The first telescopic drive 22 refers to a linear actuator for controlling the axial movement of the rotating shaft 23, which can be achieved by a pneumatic cylinder or a hydraulic cylinder, and functions to adjust the position of the rotating shaft 23 by telescoping, so that the cleaning assembly can adapt to valve cavities 4b of different diameters. The rotating shaft 23 refers to a transmission component for transmitting rotation and axial movement, which can be made of stainless steel or carbon steel, and functions to transmit the combined movement of the rotating drive 21 and the first telescopic drive 22 to the cleaning assembly. The second telescopic drive 31 refers to a linear actuator for controlling the movement of the telescopic rod 32, which can be achieved by a micro electric push rod, and functions to adjust the contact distance between the cleaning brush 33 and the inner wall of the valve body 4 by telescoping, so as to ensure the cleaning intensity. The telescopic rod 32 refers to an extension component connecting the second telescopic drive 31 and the cleaning brush 33, which can be made of aluminum alloy pipe, and functions to convert the linear movement of the second telescopic drive 31 into the radial displacement of the cleaning brush 33. The cleaning brush 33 refers to a cleaning tool directly contacting the inner wall of the valve body 4, which can be achieved by nylon bristles or steel wire brush structure, and functions to remove impurities attached to the wall of the valve cavity 4b by friction. The included angle refers to the non-parallel angle between the axis of the rotating shaft 23 and the axis of the telescopic rod 32, which can be designed as an angle of 30° to 90°.

[0030] The core innovation of the present application is that through the cooperation of the rotating drive 21, the first telescopic drive 22 and the second telescopic drive 31, the cleaning brush 33 can realize three-dimensional composite motion of circumferential rotation, axial feeding and radial telescoping in the valve cavity 4b, so as to completely remove the hardened impurities attached to the inner wall of the valve body 4 of different shapes. This structure breaks through the technical bottleneck that the traditional fixed cleaning device cannot adapt to the complex curved surface of the valve cavity 4b, and significantly improves the cleaning coverage and operation efficiency.

[0031] The working process and principle of the present application are as follows: the valve body cleaning structure 1000 comprises a mounting seat 1, a rotating assembly and a cleaning assembly. The mounting seat 1 is installed on the inner wall of the valve body 4 to provide stable support for the entire cleaning structure. The rotating assembly is composed of a rotating driving member 21, a first telescopic driving member 22 and a rotating shaft 23 to realize the rotary motion of the cleaning assembly. The rotating driving member 21 is fixed on the mounting seat 1 and drives the rotating shaft 23 to rotate through the first telescopic driving member 22. The cleaning assembly comprises a second telescopic driving member 31, a telescopic rod 32 and a cleaning brush 33, which are installed on the end of the rotating shaft 23 away from the mounting seat 1. The second telescopic driving member 31 controls the extension and retraction of the telescopic rod 32, and the cleaning brush 33 is connected to the end of the telescopic rod 32. The telescopic rod 32 forms a certain angle with the rotating shaft 23, so that the cleaning brush 33 can contact different positions on the inner wall of the valve body 4. During the cleaning process, the rotating driving member 21 drives the rotating shaft 23 to rotate, so that the cleaning brush 33 draws a circular arc trajectory on the inner wall of the valve body 4. At the same time, the first telescopic driving member 22 controls the extension and retraction of the rotating shaft 23 to change the radial position of the cleaning brush 33. The second telescopic driving member 31 adjusts the length of the telescopic rod 32 to further adjust the spatial position of the cleaning brush 33. Through the combination of the three kinds of motion, the cleaning brush 33 can cover most of the area of the inner wall of the valve body 4 to realize comprehensive cleaning. The entire cleaning structure is fixed in the valve body 4 through the mounting seat 1 and does not affect the normal operation of the valve 2000. It can be started when cleaning is needed, and it can be kept in a static state at ordinary times. This design realizes the automatic and in-situ cleaning of the inner wall of the valve body 4, and the cleaning work can be completed without disassembling the valve 2000.

[0032] Through the above scheme, the present application realizes the automatic and in-situ cleaning of the inner wall of the valve body 4. The multi-degree-of-freedom motion of the cleaning assembly enables the cleaning brush 33 to contact each corner in the valve cavity 4b, thereby improving the comprehensiveness and thoroughness of cleaning. The adjustable cleaning intensity and angle adapt to different types and degrees of deposits, avoiding damage to the valve body 4. The cleaning can be completed without disassembling the valve 2000, greatly reducing the maintenance cost and time. Regular cleaning effectively prevents the accumulation of deposits, maintains the good working condition of the valve 2000, prolongs the service life and improves the system operation reliability. After being cleaned by the valve body cleaning structure 1000, the residual impurities in the valve body 4 basically cannot reduce the flow rate of the fluid in the valve cavity 4b, so as to improve the conveying efficiency of the valve 2000.

[0033] For reference Figure 4 In an embodiment of the present application, the cleaning assembly further comprises an elastic member 34, which is arranged at the end of the telescopic rod 32 away from the second telescopic driving member 31, and the cleaning brush 33 is arranged at the end of the elastic member 34 away from the telescopic rod 32.

[0034] In the embodiment, the elastic member 34 is a cylindrical spiral spring, and its axis coincides with the axis of the telescopic rod 32. The two ends of the spring are respectively welded to the end of the telescopic rod 32 and the base of the cleaning brush 33.

[0035] Specifically, when the second telescopic drive 31 pushes the telescopic rod 32 to extend, the spring undergoes elastic deformation under axial compression, causing the cleaning brush 33 to adhere to the inner wall of the valve cavity 4b with a small contact pressure. When cleaning the right-angle transition area, the radial deformation capability of the spring allows the cleaning brush 33 to deflect slightly, ensuring that the bristles always maintain surface contact with the irregular surface.

[0036] When the cleaning brush 33 contacts the inner wall of the valve body 4, the compression spring is compressed, allowing the cleaning brush 33 to adapt to different curvatures and unevennesses of the inner wall of the valve body 4, ensuring a tight fit between the cleaning brush 33 and the inner wall of the valve body 4. Through the cooperation of the elastic element 34 and the telescopic rod 32, the cleaning brush 33 can better adapt to the shape changes of the inner wall of the valve body 4 during the cleaning process, improving the cleaning effect. The elastic element 34 buffers the contact force between the cleaning brush 33 and the inner wall of the valve body 4, preventing damage to the inner wall of the valve body 4, and also protecting the cleaning brush 33 from excessive impact. Furthermore, the elastic deformation of the elastic element 34 can compensate for any errors that may occur during the extension and retraction of the telescopic rod 32, ensuring that the cleaning brush 33 always maintains appropriate contact pressure with the inner wall of the valve body 4.

[0037] Please refer to Figure 4 In one embodiment of the present invention, the cleaning assembly further includes a slide bar 35, and a telescopic rod 32 forming a collar 323; the slide bar 35 is disposed on the cleaning brush 33, and the collar 323 is sleeved on the slide bar 35 to slide relative to the slide bar 35.

[0038] The slide rod 35 is a cylindrical metal rod with its axis parallel to the extension direction of the telescopic rod 32. The collar 323 is integrally formed with the telescopic rod 32, and its inner diameter is slightly larger than the outer diameter of the slide rod 35. Both ends of the slide rod 35 are fixed to the metal base of the cleaning brush 33 by threads. The length of the slide rod 35 is greater than the maximum stroke of the telescopic rod 32, and the inner wall of the collar 323 is provided with a polytetrafluoroethylene lubricating layer.

[0039] Specifically, when the second telescopic drive member 31 pushes the telescopic rod 32 to move axially, the collar 323 slides along the surface of the slide rod 35, generating a guiding effect and restricting the cleaning brush 33 from radially deviating during movement. The rigid fit between the slide rod 35 and the collar 323 offsets the degree of freedom brought about by the lateral deformation of the elastic member 34, ensuring that the cleaning brush 33 always moves along the predetermined trajectory. The lubricating layer on the inner wall of the collar 323 reduces the coefficient of sliding friction, ensuring that the telescopic rod 32 can still move smoothly when subjected to the reaction force of the inner wall of the valve body 4. The length of the slide rod 35 is greater than the maximum stroke of the telescopic rod 32, ensuring effective coverage of the entire guiding range while avoiding structural redundancy. This guiding mechanism complements the buffering function of the elastic member 34, maintaining contact pressure while improving motion accuracy and preventing the cleaning brush 33 from experiencing local overload or contact failure due to deflection.

[0040] Through the above technical solution, this application achieves flexible adjustment of the cleaning brush 33. The sliding engagement between the slide rod 35 and the collar 323 allows the cleaning brush 33 to move freely within a certain range, adapting to different shapes and positions of the inner wall of the valve cavity 4b. This structure enhances the adaptability of the cleaning assembly, enabling the cleaning brush 33 to better conform to the inner wall of the valve cavity 4b and improve the cleaning effect. At the same time, the sliding structure can also buffer the impact force during the cleaning process, protecting the cleaning assembly and the valve body 4. In addition, this design simplifies the structure of the cleaning assembly, facilitating maintenance and parts replacement.

[0041] Further, please refer to Figure 3 and Figure 4 In one embodiment of the present invention, the telescopic rod 32 includes a fixed rod 321 and a movable rod 322. The movable rod 322 is throttle-connected to the output end of the second telescopic drive member 31. The fixed rod 321 is disposed on the second telescopic drive member 31. The movable rod 322 can slide relative to the fixed rod 321. The elastic member 34 is disposed at the end of the movable rod 322 away from the second telescopic drive member 31. The collar 323 is formed on the movable rod 322.

[0042] Please refer to Figure 4 In one embodiment of the present invention, the cleaning assembly further includes a pressure sensor 36, which is disposed on the side of the cleaning brush 33 facing the telescopic rod 32, and is electrically connected to the second telescopic drive member 31.

[0043] The pressure sensor 36 is fixed to the surface of the cleaning brush 33 near the telescopic rod 32 and is connected to the control unit of the second telescopic drive component 31 via a wire. The pressure sensor 36 can be a piezoresistive or piezoelectric sensor with a range of 0-50N and an accuracy of ±0.5%FS. The detection direction of the pressure sensor 36 is perpendicular to the working surface of the cleaning brush 33, and the detection surface is parallel to the inner wall of the valve body 4.

[0044] Specifically, when the cleaning brush 33 contacts the inner wall of the valve body 4, the pressure sensor 36 detects the contact pressure in real time and converts it into an electrical signal, which is transmitted to the control unit of the second telescopic drive 31. The control unit compares the detected pressure with a preset threshold range. When the detected pressure is below 3N, it controls the second telescopic drive 31 to extend the telescopic rod 32 to increase the contact pressure; when the detected pressure exceeds 20N, it controls the second telescopic drive 31 to shorten the telescopic rod 32 to reduce the pressure. During pressure adjustment, the sliding engagement between the slide rod 35 and the collar 323 ensures the radial displacement freedom of the cleaning brush 33, preventing the cleaning brush 33 from jamming due to the axial movement of the telescopic rod 32. Through closed-loop control, the working pressure of the cleaning brush 33 is stabilized within the range of 5-15N, ensuring effective removal of deposits while preventing excessive pressure from damaging the surface of the valve body 4. It should be noted that the preset threshold of the pressure sensor 36 can be adjusted according to the user's needs. The above is only an example and does not limit the preset threshold of the pressure sensor 36.

[0045] Through the above technical solution, this application achieves real-time monitoring and automatic adjustment of the contact pressure between the cleaning brush 33 and the inner wall of the valve body 4. Therefore, the cleaning brush 33 can always maintain appropriate pressure in contact with the inner wall of the valve body 4, ensuring cleaning effectiveness while avoiding damage to the inner wall of the valve body 4. Simultaneously, the feedback information from the pressure sensor 36 can also be used to determine the cleanliness level of the inner wall of the valve body 4, further improving the accuracy and efficiency of cleaning.

[0046] Please refer to Figure 3 In one embodiment of the present invention, the rotating assembly further includes a bracket 24, which is connected to the rotating shaft 23 in a transmission manner; the bracket 24 is configured to be installed on the inner wall of the valve body 4 to support the rotating shaft 23.

[0047] The bracket 24 adopts a ring structure, with its inner diameter forming a clearance fit with the outer diameter of the rotating shaft 23. A flange is welded to the outer edge of the bracket 24, and the flange is fixed to the inner wall of the valve body 4 by bolts. Two sets of brackets 24 are symmetrically arranged axially, located at the middle and end of the rotating shaft 23, respectively. An annular groove is machined on the inner surface of the bracket 24, and a graphite sealing ring is embedded in the groove. The graphite sealing ring contacts the surface of the rotating shaft 23 to form a sliding seal. Support ribs extend from the bottom of the bracket 24, and an epoxy resin layer is filled between the support ribs and the inner wall of the valve body 4.

[0048] Specifically, when the shaft 23 rotates, the bracket 24 forms a sliding friction pair with the surface of the shaft 23 through the graphite sealing ring, restricting the radial displacement of the shaft 23. The two sets of brackets 24 form a double-point support structure, reducing the amount of deflection deformation of the shaft 23. The epoxy resin layer between the support ribs and the inner wall of the valve body 4 absorbs the vibration energy transmitted by the shaft 23, reducing structural resonance. The bolted connection between the flange and the inner wall of the valve body 4 allows the position of the bracket 24 to be adjusted circumferentially along the valve body 4, adapting to the installation requirements of valve bodies 4 with different diameters. The graphite sealing ring generates a self-lubricating effect during sliding, avoiding wear caused by direct contact between the metal bracket 24 and the shaft 23.

[0049] As a preferred embodiment, the solution of this application is implemented as follows: The rotating assembly includes a bracket 24, which is connected to the rotating shaft 23 in a driving connection. The bracket 24 is configured to be installed on the inner wall of the valve body 4 to support the rotating shaft 23. The bracket 24 can be made of a metal material, such as stainless steel or aluminum alloy. One end of the bracket 24 is fixed to the inner wall of the valve body 4, and the other end is connected to the rotating shaft 23. The connection between the bracket 24 and the inner wall of the valve body 4 can be achieved by bolting or welding. The number of brackets 24 can be set according to the length of the rotating shaft 23 and the load-bearing requirements. Typically, one bracket 24 can be set at each end of the rotating shaft 23, or an additional bracket 24 can be added at the middle position of the rotating shaft 23.

[0050] Through the above technical solution, this application achieves stable support for the rotating shaft 23, preventing it from shaking or shifting during rotation. The bracket 24 enhances the stability of the entire cleaning structure, ensuring that the cleaning brush 33 can accurately contact all parts of the inner wall of the valve body 4. Simultaneously, the bracket 24 distributes the weight of the rotating shaft 23, reducing the burden on the mounting base 1 and extending the service life of the entire cleaning structure. Furthermore, the bracket 24 facilitates the maintenance and replacement of the rotating shaft 23, improving the maintainability of the cleaning structure.

[0051] Please refer to Figure 3 In one embodiment of the present invention, the rotating assembly further includes a bearing 25, which is disposed on the bracket 24 and sleeved on the rotating shaft 23.

[0052] The bearing 25 is installed inside the bracket 24, with its inner ring contacting the outer surface of the rotating shaft 23 and its outer ring fixedly connected to the bracket 24. The bearing 25 can be a ball bearing 25 or a sliding bearing 25, such as a deep groove ball bearing 25, to achieve radial support. The bearing 25 is fixed to the rotating shaft 23 by an interference fit or snap-fit, ensuring that the inner ring of the bearing 25 rotates synchronously when the rotating shaft 23 rotates. The bracket 24 has a mounting groove for the bearing 25, and the outer ring of the bearing 25 is embedded in the groove and fixed by bolts or a pressure plate.

[0053] Specifically, when the shaft 23 rotates under the drive of the rotating drive component 21, the inner ring of the bearing 25 rotates with the shaft 23, while the outer ring remains stationary. The bearing 25 converts the sliding friction between the shaft 23 and the bracket 24 into rolling friction or low-resistance sliding through rolling elements or sliding surfaces, thereby reducing the frictional resistance during the rotation of the shaft 23. The shaft 23 maintains axial stability under the support of the bearing 25, preventing the cleaning assembly from shifting due to deflection or vibration. Furthermore, the grease or self-lubricating material in the bearing 25 reduces wear during long-term operation, extending the service life of the shaft 23 and the bracket 24. As a result, the rotation of the shaft 23 is smoother, improving the cleaning efficiency of the cleaning brush 33 on the inner wall of the valve body 4, while reducing the risk of jamming or damage to the rotating assembly due to friction.

[0054] This application achieves a low-friction rotary connection between the rotating shaft 23 and the support 24, reducing the frictional resistance during the rotation of the shaft 23 and improving the operating efficiency and lifespan of the rotating assembly. Simultaneously, the bearing 25 can withstand radial and axial loads, enhancing the stability and reliability of the rotating assembly. Furthermore, the use of the bearing 25 reduces wear between the shaft 23 and the support 24, extending the service life of the entire cleaning structure.

[0055] It is understood that the elastic element 34 can be made of silicone or rubber, or it can be a spring. In one embodiment of the present invention, the elastic element 34 is a spring.

[0056] The spring can be a helical spring, leaf spring, or conical spring. One end of the spring is fixedly connected to the telescopic rod 32, and the other end is fixedly connected to the cleaning brush 33. The stiffness coefficient of the spring is selected according to the material of the inner wall of the valve body 4 and the strength of the impurities adhering to it. For example, when cleaning the inner wall of a cast iron valve body 4, a helical spring with a stiffness coefficient of 50 N / mm to 100 N / mm is selected. The compression stroke of the spring is matched with the extension and retraction of the telescopic rod 32, so that the cleaning brush 33 can buffer pressure fluctuations through the elastic deformation of the spring when it contacts the inner wall of the valve body 4.

[0057] Specifically, when the second telescopic drive 31 pushes the telescopic rod 32 towards the inner wall of the valve body 4, the spring is compressed after the cleaning brush 33 contacts the inner wall of the valve body 4. This compression absorbs the impact force through elastic deformation, preventing damage to the inner wall of the valve body 4 caused by rigid contact. During the cleaning process, the spring's elastic force keeps the cleaning brush 33 in contact with the inner wall surface of the valve body 4. Even if the inner wall of the valve body 4 is uneven or has accumulated impurities, the spring's extension can be adaptively adjusted to maintain stable contact pressure. The pressure sensor 36 detects the pressure applied by the cleaning brush 33 in real time. When the pressure exceeds the preset range, the second telescopic drive 31 adjusts the extension of the telescopic rod 32. During this process, the spring assists in adjusting the contact force through deformation changes. The sliding fit between the collar 323 and the slide rod 35 constrains the lateral displacement of the spring, ensuring that the spring deforms only along the axial direction of the telescopic rod 32, preventing spring instability due to lateral forces.

[0058] Through the above technical solution, this application achieves flexible contact between the cleaning brush 33 and the inner wall of the valve body 4. The spring allows the cleaning brush 33 to adapt to different shapes and surface conditions of the inner wall of the valve body 4, enhancing the cleaning effect. Simultaneously, the spring's cushioning effect reduces wear on the inner wall of the valve body 4 during cleaning, extending the service life of the valve 2000. Furthermore, the spring's elastic properties can absorb vibrations during cleaning, improving the stability and reliability of the cleaning structure.

[0059] The present invention also proposes a valve 2000, which includes a valve body 4 and a valve body cleaning structure 1000. The specific structure of the valve body cleaning structure 1000 is as described in the above embodiments. Since the valve 2000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Figure 1 , Figure 2 , Figure 3 as well as Figure 4 This is a schematic diagram illustrating the structure of an embodiment of the valve 2000 provided by the present invention. Please refer to... Figure 3 The valve body 4 has a water inlet 4a, a valve cavity 4b and a water outlet 4c that are connected to each other, and the mounting base 1 is located on the cavity wall of the valve cavity 4b.

[0060] The mounting base 1 is fixed to the cavity wall of the valve cavity 4b, providing rigid support for the rotating assembly and the cleaning assembly; the cavity wall of the valve cavity 4b is connected to the inlet 4a and the outlet 4c to form a fluid channel; the telescopic rod 32 of the cleaning assembly forms an angle with the rotating shaft 23, so that the cleaning brush 33 covers the inner wall of the valve cavity 4b at different axial positions during rotation.

[0061] Specifically, the mounting base 1 is fixed to the wall of the valve cavity 4b by bolts or welding to ensure that the rotating drive 21 and the rotating shaft 23 remain stable under fluid impact. The inlet 4a and outlet 4c of the valve cavity 4b are distributed axially. When the fluid passes through the valve cavity 4b, it carries impurities towards the outlet 4c. The cleaning brush 33 rotates circumferentially under the drive of the rotating shaft 23. At the same time, the telescopic rod 32 adjusts its radial position through the second telescopic drive 31 so that the cleaning brush 33 is in close contact with the cavity wall.

[0062] This application uses the sleeve 5 structure to physically isolate and protect the rotating drive component, preventing impurities from entering and causing mechanical jamming; through the linkage control of the flow meter 6 and the drive component, an intelligent cleaning triggering mechanism based on fluid state changes is realized, which actively removes deposits in the early stage of their formation; the coordinated design of the valve cavity 4b flow channel structure and the cleaning trajectory enables the cleaning brush 33 to cover more than 80% of the inner wall area, effectively maintaining the stability of the flow channel cross-sectional area and reducing the probability of valve 2000 jamming caused by deposit accumulation.

[0063] Please refer to Figure 3 In one embodiment of the present invention, the valve 2000 further includes a sleeve 5, which is disposed on the mounting base 1 and the opening of the sleeve 5 is oriented toward the outlet 4c; a portion of the structure of the rotation drive 21, the first telescopic drive 22 and the rotating shaft 23 is located inside the sleeve 5.

[0064] The opening of sleeve 5 is opposite to the direction of fluid flow, forming a physical isolation barrier. The internal space of sleeve 5 accommodates part of the rotating drive component 21, the first telescopic drive component 22, and the rotating shaft 23, limiting external impurities from contacting the core drive components. The connection between sleeve 5 and mounting base 1 can be welding or bolting to ensure structural stability. The sleeve 5 can be made of corrosion-resistant metal or engineering plastic to adapt to different fluid environments.

[0065] Specifically, after the sleeve 5 is fixed to the wall of the valve chamber 4b by the mounting base 1, its open end faces the downstream outlet 4c. When fluid enters the valve chamber 4b from the inlet 4a, the closed end of the sleeve 5 prevents upstream impurities from directly impacting the drive component, while the open end facing the outlet 4c can reduce the deposition of impurities inside the sleeve 5 by utilizing the fluid's own flow inertia. When the rotating drive component 21 and the first telescopic drive component 22 are running inside the sleeve 5, part of the structure of the rotating shaft 23 extends to the outside of the sleeve 5 and connects to the cleaning assembly, ensuring power transmission while preventing the drive component from being exposed to the polluted environment. A dynamic pressure balance is formed between the internal space of the sleeve 5 and the valve chamber 4b, preventing fluid backflow and impurity intrusion. Thus, the sleeve 5, through spatial isolation and the synergistic effect of fluid flow, effectively reduces the failure rate of the drive component and extends the service life of the cleaning structure.

[0066] As a preferred embodiment, the solution of this application is implemented as follows: The sleeve 5 is fixed to the surface of the mounting base 1 by welding, and the axis of the cylindrical cavity of the sleeve 5 is arranged in the same direction as the central axis of the outlet 4c. The open end of the sleeve 5 extends to the transition area between the valve cavity 4b and the outlet 4c, and a certain gap is maintained between its inner wall and the housing of the rotating drive member 21. When the valve 2000 is in the closed state, the piston rod of the first telescopic drive member 22 is completely retracted into the sleeve 5, and the front end extension of the rotating shaft 23 is wrapped by the sealing ring of the side wall of the sleeve 5. Further, the edge of the open end of the sleeve 5 is chamfered to form a bevel, and the body of the sleeve 5 is integrally cast from 316L stainless steel and the surface is electrolytically polished.

[0067] Through the above technical solutions, this application effectively blocks the direct impact of the fluid medium on the drive components, preventing impurity particles from entering the mating gap between the rotating drive component 21 and the first telescopic drive component 22. The directional opening structure of the sleeve 5 creates a negative pressure zone when the high-speed fluid flows through the outlet 4c, causing a relatively static protective space to form inside the sleeve 5. The dynamic sealing fit between the sealing ring and the rotating shaft 23 prevents the medium from seeping into the transmission mechanism, and the electrolytically polished surface significantly reduces the probability of dirt adhesion, thereby ensuring the long-term stable operation of the drive system in complex fluid environments.

[0068] Please refer to Figure 3 Figure 3 In one embodiment of the present invention, the valve 2000 further includes a flow meter 6, which is disposed on the valve body 4 and located at the outlet 4c; the flow meter 6 is electrically connected to the rotation drive member 21, the first telescopic drive member 22 and the second telescopic drive member 31.

[0069] The flow meter 6 is installed at the outlet 4c to detect the fluid velocity, and its signal output is connected to the controller of each driving component via a control circuit. The installation position of the flow meter 6 at the outlet 4c avoids interference from the internal structure of the valve chamber 4b with measurement accuracy, while directly reflecting the unobstructed flow path. Electrical connections include wired transmission or wireless communication modules, and the control logic can be set to trigger a cleaning action when the flow rate falls below a preset threshold.

[0070] Specifically, the flow meter 6 monitors the fluid flow data at the outlet 4c in real time. When a continuous decrease in flow is detected, it sends a signal to the rotation drive 21 to start the rotation of the shaft 23, while simultaneously controlling the first telescopic drive 22 to adjust the axial displacement range of the shaft 23. The second telescopic drive 31 controls the extension speed of the telescopic rod 32 according to the rate of change in flow, so that the cleaning brush 33 makes pressure contact with the inner wall of the valve chamber 4b to match the thickness of the deposits. When the flow returns to the normal range, the drive stops working to reduce energy consumption. This linkage control mechanism achieves a balance between on-demand cleaning and energy consumption through closed-loop feedback of flow data and mechanical action.

[0071] As a preferred embodiment, the solution of this application is implemented as follows: The flow meter 6 is fixedly installed on the outer wall of the outlet 4c of the valve body 4, and its measuring end extends into the internal fluid channel of the outlet 4c; the flow meter 6 is connected to the control module of the rotation drive 21, the first telescopic drive 22 and the second telescopic drive 31 through wires to form a closed-loop circuit. When the fluid flows through the outlet 4c, the flow meter 6 collects the flow velocity data in real time and generates an electrical signal. The control module receives the electrical signal and compares it with a preset threshold. If the flow velocity data is lower than the preset threshold, the control module synchronously starts the rotation drive 21 to drive the rotating shaft 23 to rotate, and at the same time triggers the first telescopic drive 22 to control the axial displacement of the rotating shaft 23, and links the second telescopic drive 31 to push the telescopic rod 32 to extend radially, so that the cleaning brush 33 contacts the inner wall of the valve cavity 4b to perform a cleaning action.

[0072] Through the above technical solution, this application can dynamically adjust the operating status of the cleaning mechanism based on flow data. When the sediment on the inner wall of valve cavity 4b causes the flow channel cross-sectional area to decrease, the flow meter 6 detects the decrease in flow rate in real time and triggers the cleaning program. Through the coordinated action of multiple driving components, the rotation angle, axial displacement and radial pressure of the cleaning brush 33 are precisely controlled, effectively removing the deposits and restoring the flow channel unobstructed, avoiding valve 2000 jamming or sealing failure caused by impurity accumulation.

[0073] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A valve body cleaning structure, characterized in that, include: Mounting base, the mounting base being configured to be mounted on the inner wall of the valve body; A rotating assembly, comprising a rotating drive component, a first telescopic drive component, and a rotating shaft; the rotating drive component is disposed on the mounting base, the first telescopic drive component is throttle-connected to the output end of the rotating drive component, and the rotating shaft is throttle-connected to the output end of the first telescopic drive component. as well as A cleaning assembly includes a second telescopic drive member, a telescopic rod, and a cleaning brush. The second telescopic drive member is located at the end of the rotating shaft away from the mounting base. The telescopic rod is tractively connected to the output end of the second telescopic drive member. The cleaning brush is connected to the end of the telescopic rod away from the second telescopic drive member. An angle is formed between a straight line extending along the length direction of the rotating shaft and a straight line extending along the length direction of the telescopic rod. The cleaning brush is configured to clean the inner wall of the valve body.

2. The valve body cleaning structure as described in claim 1, characterized in that, The cleaning assembly further includes an elastic element located at the end of the telescopic rod away from the second telescopic drive member, and the cleaning brush is located at the end of the elastic element away from the telescopic rod.

3. The valve body cleaning structure as described in claim 2, characterized in that, The cleaning assembly also includes a slide bar, and the telescopic bar forms a collar; the slide bar is disposed on the cleaning brush, and the collar is sleeved on the slide bar to slide relative to the slide bar.

4. The valve body cleaning structure as described in claim 3, characterized in that, The cleaning assembly also includes a pressure sensor located on the side of the cleaning brush facing the telescopic rod, and the pressure sensor is electrically connected to the second telescopic drive component.

5. The valve body cleaning structure as described in claim 1, characterized in that, The rotating assembly also includes a bracket, which is connected to the rotating shaft in a driving manner; the bracket is configured to be installed on the inner wall of the valve body to support the rotating shaft.

6. The valve body cleaning structure as described in claim 5, characterized in that, The rotating assembly also includes a bearing, which is disposed on the bracket and sleeved on the rotating shaft.

7. The valve body cleaning structure as described in any one of claims 2 to 4, characterized in that, The elastic element is a spring.

8. A valve, characterized in that, The valve includes a valve body and a valve body cleaning structure as described in any one of claims 1 to 7, wherein the valve body has a communicating inlet, a valve cavity, and an outlet, and the mounting base is disposed on the cavity wall of the valve cavity.

9. The valve as claimed in claim 8, characterized in that, The valve also includes a sleeve, which is disposed on the mounting base and has its opening facing the outlet. The rotating drive, the first telescopic drive, and a portion of the rotating shaft are located inside the sleeve.

10. The valve as claimed in claim 8, characterized in that, The valve also includes a flow meter, which is disposed on the valve body and located at the outlet; the flow meter is electrically connected to the rotation drive, the first telescopic drive, and the second telescopic drive.

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