Valve rod cleaning device

Abstract

The utility model relates to a valve rod cleaning device, and relates to the technical field of valve rod cleaning. The grounding knife-switch device valve comprises a protective cylinder, a fixed support and a cleaning piece. And the fixed bracket is sleeved in the protective cylinder. The fixing support extends in the first direction. The fixing support is connected with the protection barrel and rotates relative to the protection barrel in the first direction. The first direction is parallel to the axial direction of the protective cylinder. The cleaning piece is arranged on the inner side wall of the fixing support. According to the valve rod cleaning device, dirt and impurities on the valve rod can be rapidly and effectively removed through rotation of the fixing support and the friction effect of the cleaning piece, the cleaning efficiency is greatly improved, thorough cleaning is ensured through direct contact of the cleaning piece and the valve rod, cleaning dead corners are reduced, and therefore the cleaning quality is improved.

Description

Technical Field

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

[0002] Commonly used valves are classified according to their structural form into gate valves, globe valves, butterfly valves, throttle valves, ball valves, safety valves, regulating valves, check valves, plug valves, etc. Among all types of valves, gate valves are the most widely used. Gate valves can also be divided into rising stem gate valves and non-rising stem gate valves based on the structure of the valve stem. In daily operation, rising stem gate valves are installed in various process pipelines and equipment. With normal production operation, the valve stem of rising stem gate valves is affected by dust, aged lubricating grease, and oil stains that accumulate during valve opening and closing, resulting in stains on the valve stem surface, especially between the trapezoidal threads of the valve stem.

[0003] Currently, valve stems are cleaned manually by wiping them with a towel. However, the cleaning effect is poor, and the dirt between the valve stem threads cannot be cleaned properly, causing the valve to become stiff and difficult to open and close during operation. Utility Model Content

[0004] This utility model provides a valve stem cleaning device that can remove impurities and stains from the surface of the valve stem, effectively cleaning the valve stem to ensure that the valve can be opened and closed flexibly and to avoid jamming during the opening and closing process.

[0005] This application provides a valve stem cleaning device, including: a protective cylinder; a fixed bracket sleeved inside the protective cylinder, the fixed bracket extending along a first direction; the fixed bracket connected to the protective cylinder, and the fixed bracket rotating relative to the protective cylinder along the first direction, the first direction being parallel to the axial direction of the protective cylinder; and a cleaning component disposed on the inner sidewall of the fixed bracket.

[0006] According to the foregoing embodiments of this application, the fixed bracket includes a first fixed strip in the shape of an annulus and a plurality of second fixed strips extending along a first direction. The first fixed strip is rotatably connected to the protective cylinder, and the second fixed strips are distributed at intervals along the circumference of the first fixed strip. The cleaning component is disposed on the second fixed strip.

[0007] According to any of the foregoing embodiments of this application, the cleaning component includes a first cleaning brush and a second cleaning brush, wherein the hardness of the first cleaning brush is greater than that of the second cleaning brush, the first cleaning brush is disposed on at least one second fixing strip, and the second cleaning brush is disposed on at least one second fixing strip.

[0008] According to any of the foregoing embodiments of this application, the valve stem cleaning device further includes a first rolling bearing, the outer ring of the first rolling bearing is fixedly connected to the protective cylinder, the inner ring of the bearing is fixedly connected to the fixed bracket, and the inner ring is rotatable relative to the inner ring along its own axial direction.

[0009] According to any of the foregoing embodiments of the present application, the valve stem cleaning device further includes a drive assembly connected to the inner ring, and the drive assembly drives the inner ring to rotate along its own axial direction.

[0010] According to any of the foregoing embodiments of this application, the drive assembly includes a gear transmission assembly and a power source. The power source is connected to the inner ring through the gear transmission assembly. The drive assembly drives the gear transmission assembly, and the gear transmission assembly drives the inner ring to rotate along its own axial direction.

[0011] According to any of the foregoing embodiments of the present application, the gear transmission assembly includes a driving wheel and a driven wheel that cooperate with each other. The driven wheel is coaxially connected to the inner ring, and the driving wheel is connected to a power source. The power source drives the driving wheel to rotate.

[0012] According to any of the foregoing embodiments of this application, the driving gear is a bevel gear and the driven gear is a gear ring.

[0013] According to any of the foregoing embodiments of this application, the valve stem cleaning device further includes a protective cover, which is disposed on the gear transmission assembly. The power source is a drive handle, one end of which is fixedly connected to the drive wheel. The drive handle drives the drive wheel to rotate, and the other end of which passes through the outside of the protective cover. The drive handle is rotatably connected to the protective cover.

[0014] According to any of the foregoing embodiments of this application, the valve stem cleaning device further includes a second rolling bearing, and the drive handle is connected to the protective cover through the second rolling bearing.

[0015] According to the valve stem cleaning device of this application embodiment, when the valve stem needs to be cleaned, the valve stem is first inserted into the protective cylinder and passes through the fixed bracket, causing the fixed bracket to rotate relative to the protective cylinder in a first direction (i.e., a direction parallel to the axial direction of the protective cylinder). As the fixed bracket rotates, the cleaning component disposed on its inner sidewall moves accordingly and rubs against the surface of the valve stem, thereby removing dirt, deposits, and other impurities from the valve stem. Through the rotation of the fixed bracket and the friction of the cleaning component, dirt and impurities on the valve stem can be removed quickly and effectively, greatly improving cleaning efficiency. The direct contact between the cleaning component and the valve stem ensures thorough cleaning, reduces cleaning dead angles, and thus improves cleaning quality. Attached Figure Description

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the valve stem cleaning device in one embodiment of this application;

[0018] Figure 2This is a schematic diagram of the structure of the fixing bracket in one embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the structure of the first rolling bearing in one embodiment of this application.

[0020] Figure label:

[0021] 100-Valve stem cleaning device;

[0022] 10 - Protective casing;

[0023] 20 - Fixed bracket; 21 - First fixing strip; 22 - Second fixing strip;

[0024] 30 - Cleaning component; 31 - First cleaning brush; 32 - Second cleaning brush;

[0025] 40 - First rolling bearing; 41 - Outer ring; 42 - Inner ring;

[0026] 50 - Drive assembly; 51 - Gear transmission assembly; 511 - Driving wheel; 512 - Driven wheel; 52 - Power source;

[0027] 60 - Protective shield;

[0028] 70 - Second rolling bearing. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] This utility model provides a valve stem cleaning device that can remove impurities and stains from the surface of the valve stem, effectively cleaning the valve stem to ensure that the valve can be opened and closed flexibly and to avoid jamming during the opening and closing process.

[0031] Figure 1 This is a schematic diagram of the valve stem cleaning device in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of the fixing bracket in one embodiment of this application. Figure 1-2 As shown in the figure, this application embodiment provides a valve stem cleaning device 100. The valve stem cleaning device 100 includes a protective cylinder 10, a fixed bracket 20, and a cleaning component 30. The fixed bracket 20 is sleeved inside the protective cylinder 10. The fixed bracket 20 extends along a first direction. The fixed bracket 20 is connected to the protective cylinder 10, and the fixed bracket 20 rotates relative to the protective cylinder 10 along the first direction. The first direction is parallel to the axial direction of the protective cylinder 10. The cleaning component 30 is disposed on the inner sidewall of the fixed bracket 20.

[0032] As an external protective structure, the protective cylinder 10 provides mounting support for the fixed bracket 20, allowing the fixed bracket 20 to rotate flexibly relative to the protective cylinder 10 in the first direction, so that the cleaning component 30 can clean the valve stem. On the other hand, the design of the protective cylinder 10 protects the operator from injury during the cleaning process and prevents the impact of splashes that may be generated during the cleaning process on the surrounding environment, ensuring the safety and stability of the entire cleaning process.

[0033] It should be noted that the fixing bracket 20 can be a cylindrical bracket, and the cleaning component 30 is disposed on the inner side wall of the cylindrical bracket. Alternatively, the fixing bracket 20 can also be composed of a single rod or multiple rods extending along the first direction. The single rod or multiple rods are rotatably connected to the protective cylinder 10, and the cleaning component 30 is disposed on the outer circumferential surface of the rods. The cleaning component 30 can be a cleaning brush, a cleaning sponge, a cleaning cloth, etc.

[0034] The fixed bracket 20 and the protective cylinder 10 are rotatably connected, either through a matching slide rail and groove or through a bearing. Understandably, when connected via a slide rail and groove, a groove or slider can be fixedly installed circumferentially on the inner wall of the protective cylinder 10, and a matching slider or groove can be fixedly installed on the outer wall of the fixed bracket 20. When connected via a bearing, the protective cylinder 10 is fixedly connected to the outer ring of the bearing, and the fixed bracket 20 is fixedly connected to the inner ring of the bearing. The inner ring of the bearing rotates relative to the outer ring, causing the fixed bracket 20 to rotate relative to the protective cylinder 10.

[0035] According to the valve stem cleaning device 100 of this application embodiment, when the valve stem needs to be cleaned, the valve stem is first inserted into the protective cylinder 10 and passes through the fixed bracket 20, causing the fixed bracket 20 to rotate relative to the protective cylinder 10 in a first direction (i.e., a direction parallel to the axial direction of the protective cylinder 10). As the fixed bracket 20 rotates, the cleaning component 30 disposed on its inner sidewall moves accordingly and rubs against the surface of the valve stem, thereby removing dirt, deposits, and other impurities from the valve stem. Through the rotation of the fixed bracket 20 and the friction of the cleaning component 30, dirt and impurities on the valve stem can be removed quickly and effectively, greatly improving cleaning efficiency. The direct contact between the cleaning component 30 and the valve stem ensures thorough cleaning, reduces cleaning dead angles, and thus improves cleaning quality.

[0036] In some alternative embodiments, the protective cylinder 10 and the fixed bracket 20 are detachably connected. When the protective cylinder 10 or the fixed bracket 20 is damaged due to long-term use, accidental impact, or other reasons, or when cleaning or inspection is required, the detachable connection allows the operator to easily remove the damaged, cleaned, or inspected parts and replace them with new, repaired, or cleaned parts. Only the damaged parts are replaced, not the entire device. The detachable connection helps reduce maintenance costs and facilitates maintenance. At the same time, different sizes or types of protective cylinders 10 and fixed brackets 20 can be replaced to accommodate different specifications or types of valve stems. Similarly, the fixed bracket 20 and the cleaning component 30 can also be detachably connected. The cleaning component 30, as the part that directly contacts the valve stem for cleaning, typically experiences higher wear. With a detachable connection, when the cleaning component 30 wears to a certain extent or needs replacement, the operator can easily remove it from the fixed bracket 20 and replace it with a new cleaning component 30.

[0037] like Figure 1-2 As shown, in some embodiments, the fixing bracket 20 includes a first fixing strip 21 in an annular shape and a plurality of second fixing strips 22 extending along a first direction. The first fixing strip 21 is rotatably connected to the protective cylinder 10. The second fixing strips 22 are distributed circumferentially along the first fixing strip 21. The cleaning component 30 is disposed on the second fixing strips 22.

[0038] In this embodiment, the first fixing strip 21 provides stable support and mounting structure for the multiple second fixing strips 22. The second fixing strips 22 are spaced circumferentially along the first fixing strip 21, enhancing the stability of the fixing bracket 20 and providing a mounting structure for the cleaning component 30. This design is simple and inexpensive. When cleaning the valve stem, the protective cylinder 10 can be fastened to the valve stem, allowing the multiple second fixing strips 22 to surround the outer circumferential surface of the valve stem, thus enabling the cleaning component 30 on the second fixing strips 22 to contact the outer circumferential surface of the valve stem. Rotating the fixing bracket 20 allows the multiple second fixing strips 22 to rotate relative to the protective cylinder 10 in a first direction, enabling the cleaning component 30 to clean the valve stem.

[0039] In some optional embodiments, there may be multiple first fixing bars 21, which are coaxial and spaced apart along a first direction.

[0040] like Figure 1-2 As shown, in some embodiments, the cleaning component 30 includes a first cleaning brush 31 and a second cleaning brush 32. The first cleaning brush 31 has a higher hardness than the second cleaning brush 32. The first cleaning brush 31 is disposed on at least one second fixing strip 22, and the second cleaning brush 32 is disposed on at least one second fixing strip 22.

[0041] In this embodiment, the first cleaning brush 31 has high hardness, such as a steel wire brush, suitable for cleaning harder or more difficult-to-remove stains and grime. The second cleaning brush 32 has lower hardness, such as a nylon or plastic brush, to sweep away the stains and grime brushed off by the first cleaning brush 31, ensuring thorough cleaning. The first cleaning brush 31 and the second cleaning brush 32 are respectively mounted on at least one second fixing strip 22, so that the first cleaning brush 31 and the second cleaning brush 32 work together to clean the valve stem, achieving the best cleaning effect.

[0042] In some optional embodiments, the first cleaning brush 31 and the second cleaning brush 32 are alternately arranged on different second fixing strips 22. Alternating between high-hardness and low-hardness cleaning brushes makes the cleaning process smoother and more efficient, and allows for more comprehensive coverage of stains and dirt, ensuring a more thorough cleaning. The first cleaning brush 31 is responsible for removing stubborn stains, while the second cleaning brush 32 is responsible for sweeping and cleaning up any remaining stains; the two complement each other, improving cleaning efficiency and quality.

[0043] like Figure 1 As shown, in some embodiments, the valve stem cleaning device 100 further includes a first rolling bearing 40. The outer ring 41 of the first rolling bearing 40 is fixedly connected to the protective cylinder 10. The inner ring 42 of the first rolling bearing 40 is fixedly connected to the fixed bracket 20. The inner ring 42 is rotatable relative to itself along its own axial direction.

[0044] In this embodiment, when the cleaning device starts working, the outer ring 41 of the first rolling bearing 40 is stably fixed to the protective cylinder 10, while the inner ring 42 rotates as the fixed bracket 20 moves. The design of the rolling bearing reduces friction and wear of the cleaning device during operation, extends the service life of the device, reduces maintenance costs, and also improves the reliability and stability of the device.

[0045] like Figure 1 As shown, in some embodiments, the valve stem cleaning device 100 further includes a drive assembly 50. The drive assembly 50 is connected to the inner ring 42, and the drive assembly 50 drives the inner ring 42 to rotate along its own axial direction.

[0046] The drive assembly 50 can be either a drive handle assembly or a drive motor assembly. When the drive assembly 50 is a drive handle, one end of the drive handle can be coaxially interference-fitted with the inner ring 42, and the rotation of the drive handle drives the inner ring 42 to rotate. Alternatively, the drive handle can be connected to the inner ring 42 through a transmission assembly. Similarly, when the drive assembly 50 is a drive motor assembly, the output shaft of the drive motor can be coaxially interference-fitted with the inner ring 42, and the drive motor drives the output shaft to rotate, thereby driving the inner ring 42 to rotate. Alternatively, the drive assembly 50 can be connected to the inner ring 42 through a transmission assembly.

[0047] In this embodiment, the drive assembly 50 is connected to the inner ring 42 of the bearing. By driving the inner ring 42 of the bearing to rotate relative to the outer ring 41 of the bearing along its own axial direction, the fixed bracket 20 is driven to rotate relative to the protective cylinder 10 in the first direction to clean the valve stem.

[0048] like Figure 1 As shown, in some embodiments, the drive assembly 50 includes a gear transmission assembly 51 and a power source 52. The power source 52 is connected to the inner ring 42 via the gear transmission assembly 51. The drive assembly 50 drives the gear transmission assembly 51, which in turn causes the inner ring 42 to rotate along its own axial direction.

[0049] In this embodiment, the power source 52 can be a drive handle or a drive motor. The rotational motion of the power source 52 is converted into the meshing motion of a series of gears. Through precise meshing and transmission, the gears convert the rotational motion of the power source 52 into the axial rotation of the inner ring 42. The gear transmission assembly 51 ensures that the inner ring 42 can rotate at an appropriate speed and torque through functions such as speed reduction and torque amplification, ensuring that the inner ring 42 can obtain sufficient power to rotate.

[0050] like Figure 1 As shown, in some embodiments, the gear transmission assembly 51 includes a driving gear 511 and a driven gear 512 that cooperate with each other. The driven gear 512 is coaxially connected to the inner ring 42. The driving gear 511 is connected to a power source 52. The power source 52 drives the driving gear 511 to rotate.

[0051] In this embodiment, the power source 52 drives the driving wheel 511 to rotate, and the driving wheel 511 drives the driven wheel 512 to rotate together. The rotation speed and direction of the driven wheel 512 are determined by the rotation speed and direction of the driving wheel 511, and are transmitted to the inner ring 42 through a coaxial connection.

[0052] like Figure 1 As shown, in some embodiments, the driving gear 511 is a bevel gear and the driven gear 512 is a gear ring.

[0053] In this embodiment, the gear ring is coaxially and fixedly connected to the inner ring 42 of the bearing, and the bevel gear is connected to the power source 52 and meshes with the gear ring. The design of the bevel gear and gear ring allows this transmission system to flexibly adapt to different spatial layouts to save space.

[0054] like Figure 1 As shown, in some embodiments, the valve stem cleaning device 100 further includes a protective cover 60. The protective cover 60 covers the gear transmission assembly 51. The power source 52 is a drive handle, one end of which is fixedly connected to the drive wheel 511, driving the drive wheel 511 to rotate. The other end of the drive handle passes through the outside of the protective cover 60, and the drive handle is rotatably connected to the protective cover 60.

[0055] In this embodiment, the protective cover 60 protects the gear transmission assembly 51 from physical damage such as accidental impacts and compression, as well as from corrosion by external environments such as dust and moisture, thus extending its service life. One end of the drive handle is fixedly connected to the drive wheel 511 for directly driving the drive wheel 511 to rotate, while the other end extends outside the protective cover 60 for easy rotation by the operator. The drive handle and the protective cover 60 are connected by a rotatable connection to ensure that the protective cover 60 remains stationary or rotates with the drive handle when it rotates.

[0056] like Figure 3 As shown, and see also Figure 1 In some embodiments, the valve stem cleaning device 100 further includes a second rolling bearing 70, through which the drive handle is connected to the protective cover 60. The connection via the second rolling bearing 70 reduces direct contact between the drive handle and the protective cover 60, thereby reducing the risk of wear and damage. This helps extend the service life of both the drive handle and the protective cover 60, and reduces maintenance costs.

[0057] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A valve stem cleaning device, characterized in that, include: Protective casing; A fixed bracket is fitted inside the protective cylinder, and the fixed bracket extends along a first direction; The fixed bracket is connected to the protective cylinder, and the fixed bracket rotates relative to the protective cylinder along the first direction, the first direction being parallel to the axial direction of the protective cylinder; as well as A cleaning component is disposed on the inner side wall of the fixed bracket.

2. The valve stem cleaning device as described in claim 1, characterized in that, The fixing bracket includes a first fixing strip in the shape of a ring and a plurality of second fixing strips extending along the first direction. The first fixing strip is rotatably connected to the protective cylinder. The second fixing strips are distributed at intervals along the circumference of the first fixing strip. The cleaning component is disposed on the second fixing strip.

3. The valve stem cleaning device as described in claim 2, characterized in that, The cleaning component includes a first cleaning brush and a second cleaning brush, wherein the first cleaning brush has a higher hardness than the second cleaning brush, the first cleaning brush is disposed on at least one second fixing strip, and the second cleaning brush is disposed on at least one second fixing strip.

4. The valve stem cleaning device as described in any one of claims 1-3, characterized in that, The valve stem cleaning device further includes a first rolling bearing, the outer ring of which is fixedly connected to the protective cylinder, and the inner ring of which is fixedly connected to the fixed bracket. The inner ring is rotatable relative to the inner ring along its own axial direction.

5. The valve stem cleaning device as described in claim 4, characterized in that, The valve stem cleaning device also includes a drive assembly connected to the inner ring, which drives the inner ring to rotate along its own axis.

6. The valve stem cleaning device as described in claim 5, characterized in that, The drive assembly includes a gear transmission assembly and a power source. The power source is connected to the inner ring through the gear transmission assembly. The drive assembly drives the gear transmission assembly, and the gear transmission assembly causes the inner ring to rotate along its own axial direction.

7. The valve stem cleaning device as described in claim 6, characterized in that, The gear transmission assembly includes a driving wheel and a driven wheel that cooperate with each other. The driven wheel is coaxially connected to the inner ring, and the driving wheel is connected to the power source. The power source drives the driving wheel to rotate.

8. The valve stem cleaning device as described in claim 7, characterized in that, The driving gear is a bevel gear, and the driven gear is a gear ring.

9. The valve stem cleaning device as described in claim 8, characterized in that, The valve stem cleaning device also includes a protective cover, which covers the gear transmission assembly. The power source is a drive handle. One end of the drive handle is fixedly connected to the drive wheel, and the drive handle drives the drive wheel to rotate. The other end of the drive handle extends outside the protective cover, and the drive handle is rotatably connected to the protective cover.

10. The valve stem cleaning device as described in claim 9, characterized in that, The valve stem cleaning device also includes a second rolling bearing, through which the drive handle is connected to the protective cover.

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