Dustproof device for pneumatic grease pump and pneumatic grease pump
By designing a dustproof device for pneumatic grease pumps, utilizing a pressure cap, dustproof cloth, curling mechanism, and coupling mechanism, the problem of dust entering during drum changing is solved, achieving a miniaturized dustproof effect and convenient operation.
Patent Information
- Application Number
- CN202520592772.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing pneumatic grease pumps have the problem of dust easily entering during drum changing due to their dustproof structure, and the existing dustproof cover structure is too large and takes up too much space, resulting in inconvenience in operation.
Design a dustproof device that includes a cap, a dustproof cloth, a rolling mechanism, and a coupling mechanism. By splicing the cap with the grease container, the rolling mechanism and the coupling mechanism are used to realize the automatic shrinkage and coupling of the dustproof cloth, ensuring the formation of a sealed space and preventing external pollutants from entering.
This effectively prevents dust from entering during drum changing, reduces the space occupied by dustproof devices, improves the convenience of operation and dustproof effect, and reduces the risk of contamination to the grease pump.
Smart Images
Figure CN223868988U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pneumatic grease pump technology, and in particular, to a dustproof device for a pneumatic grease pump. Furthermore, this utility model also relates to a pneumatic grease pump including the aforementioned dustproof device. Background Technology
[0002] Pneumatic grease pumps are crucial components in existing tunneling machines for grease delivery. The pumping mechanism within the pneumatic grease pump includes a pump rod, whose internal components are highly precise. Therefore, the cleanliness of the medium being pumped is critical. Dust, small stones, and other solid particles can easily damage the pump rod, preventing grease delivery and, in severe cases, affecting the machine's tunneling progress. However, the working environment of tunneling machines is complex. Dust in the air and equipment vibration during tunneling can cause solid particles to scatter from the tunnel, easily entering the grease tank and ultimately the grease pump, causing damage.
[0003] Existing pneumatic grease pump manufacturers control the fit between the pressure plate seal and the inner wall of the grease tank to prevent dust during operation. However, dust and other solid particles can enter the grease tank not only during operation but also during tank changes. Dust adhering to the pressure plate seal due to grease buildup can cause contamination as the dust enters the new grease tank along with the seal. While existing grease pumps primarily prevent dust ingress by controlling the fit between the pressure plate seal and the grease tank, dust accumulates on the pressure plate seal after a period of use. Furthermore, dust from the inner wall of the grease tank can adhere to the pressure plate seal during tank changes, entering the grease during pump operation and causing contamination, thus affecting pump performance. Existing dust prevention methods for grease pumps involve designing large dust covers to completely enclose the pump, essentially placing it in an independent space to isolate it from external dust. However, pneumatic grease pumps require a relatively large operating space, necessitating even larger dust covers, which is unsuitable for small-diameter tunneling machines. Furthermore, the addition of dust covers makes changing the pump drum more difficult, negatively impacting its use and maintenance. Utility Model Content
[0004] This utility model provides a dustproof device and a pneumatic grease pump for a pneumatic grease pump, in order to solve the technical problems of existing pneumatic grease pump dustproof structures being prone to dust entering during drum changing or the dustproof cover structure being too large and causing inconvenience in operation.
[0005] According to one aspect of the present invention, a dustproof device for a pneumatic grease pump is provided, comprising:
[0006] A pressure cap, used to be installed on an oil container, the pressure cap being annular and composed of at least two arc-shaped cap bodies joined together;
[0007] A dustproof cloth, with its first end disposed on the cover body along the circumference of the cover body, and its second end being circumferentially sealed to the pressure plate of the grease pump;
[0008] A curling mechanism is provided on the cover and connected to the first end of the dustproof cloth, used to curl and shrink the dustproof cloth or to lower the dustproof cloth;
[0009] A coupling mechanism is provided on the side edge of the dustproof cloth for coupling the side edges of the dustproof cloth on adjacent covers.
[0010] As a further improvement to the above technical solution, the curling mechanism includes two columns disposed at both ends on the upper surface of the cover, a bearing disposed at the top of the columns, and a curling rod passing through the bearing.
[0011] As a further improvement to the above technical solution, an operating handle is provided at one end of the winding rod for driving the winding rod to rotate circumferentially.
[0012] As a further improvement to the above technical solution, the coupling mechanism includes a magnetic element disposed on the side edge of the dustproof cloth, and a separation structure for separating the magnetic element is provided at the first end of the bottom of the cover.
[0013] As a further improvement to the above technical solution, the coupling mechanism includes a zipper disposed on the side edge of the dustproof cloth, and a fixing structure for fixing a zipper is provided at the first end of the bottom of the cover. The zipper cooperates with the zippers on the side edges of two adjacent dustproof cloths to couple the zippers on the side edges of the dustproof cloth below the fixing structure and to disengage the zippers on the dustproof cloth above the fixing structure.
[0014] As a further improvement to the above technical solution, the pressure cover is provided with an arc-shaped groove for threading the dustproof cloth through.
[0015] As a further improvement to the above technical solution, the first end and the second end of the cover are respectively provided with matching connection structures, or the ends of adjacent covers are bonded together, or the ends of adjacent covers are welded together.
[0016] As a further improvement to the above technical solution, the curling mechanism is connected to the power mechanism, and the power mechanism is used to drive the curling mechanism to rotate forward or backward, thereby controlling the dustproof cloth to curl, shrink or unwind.
[0017] As a further improvement to the above technical solution, the power mechanism includes a pneumatic motor connected to the air circuit of the grease pump, and the direction of rotation of the pneumatic motor matches the direction of movement of the pressure plate.
[0018] According to another aspect of the present invention, a pneumatic grease pump is also provided, which includes the dustproof device for the pneumatic grease pump described above.
[0019] This utility model has the following beneficial effects:
[0020] This dustproof device consists of a pressure cap that fits over the grease tank. The pressure cap is composed of multiple cap bodies joined together. Each cap body is equipped with a dustproof cloth, a curling mechanism, and a coupling mechanism. When the pressure plate is raised, if the pressure plate height exceeds the height of the grease tank, the entire pressure cap will be lifted without disassembly. During the grease pump's downward pressure, the pressure cap closes onto the grease tank. Normal operation is achieved as long as the pressure cap maintains a proper fit. It is easy to assemble and disassemble, lightweight, space-saving, and convenient for changing tanks. The second end of the dustproof cloth is circumferentially sealed to the pressure plate of the grease pump. The connection is achieved by a curling mechanism on the cover connecting the first end of the dustproof cloth. Before the pressure plate descends, the dustproof cloth in the curling mechanism is in a curled and contracted state. When the pressure plate presses down, the second end of the dustproof cloth is driven downward by the pressure plate. The coupling device automatically couples the side edges of adjacent dustproof cloths. Even if the dustproof cloths are wrapped around each other to form a relatively sealed space, it prevents external pollutants from entering the pneumatic grease pump, and the inner wall of the grease tank will not be covered with dust, ensuring the dustproof effect. When the grease pump is lifted, the curling mechanism can curl and gather the dustproof cloth, and the gathered part automatically disengages, making the operation simple.
[0021] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description
[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0023] Figure 1 This is a reference diagram showing the usage state of the dustproof device according to a preferred embodiment of this utility model;
[0024] Figure 2 This is a partial structural schematic diagram of the dustproof device according to a preferred embodiment of the present invention.
[0025] Legend:
[0026] 100. Cover; 101. Arc groove; 200. Dustproof cloth; 300. Rolling mechanism; 301. Column; 302. Bearing; 303. Rolling rod; 304. Operating handle; 401. Fixing structure; 500. Grease pump. Detailed Implementation
[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.
[0028] Figure 1 This is a reference diagram showing the usage state of the dustproof device according to a preferred embodiment of this utility model; Figure 2 This is a partial structural schematic diagram of the dustproof device according to a preferred embodiment of the present invention.
[0029] like Figure 1 and Figure 2 As shown, the dustproof device for the pneumatic grease pump 500 in this embodiment includes:
[0030] A pressure cap, used to be installed on an oil container, the pressure cap is ring-shaped and is composed of at least two arc-shaped cap bodies 100 spliced together;
[0031] The dustproof cloth 200 has its first end set on the cover 100 along the circumference of the cover 100, and its second end is circumferentially sealed to the pressure plate of the grease pump 500.
[0032] A curling mechanism 300 is disposed on the cover 100 and connected to the first end of the dustproof cloth 200, for curling and shrinking the dustproof cloth 200 or lowering the dustproof cloth 200.
[0033] A coupling mechanism is provided on the side edge of the dustproof cloth 200 to couple the side edges of the dustproof cloth 200 on adjacent covers 100.
[0034] Preferably, two covers 100 are provided, which makes the structure more streamlined; the dustproof cloth 200 adopts conventional flexible cloth that can be rolled up and is dustproof in the prior art;
[0035] Understandably, this dustproof device consists of a pressure cap that covers the grease drum, and the pressure cap is formed by splicing multiple cap bodies 100. Each cap body 100 is equipped with a dustproof cloth 200, a curling mechanism 300, and a coupling mechanism. When the pressure plate is raised, if the height of the pressure plate exceeds the height of the grease drum, the pressure cap will be lifted as a whole without disassembly. During the downward pressure of the grease pump 500, the pressure cap closes onto the grease drum. Normal operation occurs when the pressure cap maintains a proper fit. It is easy to assemble and disassemble, lightweight, space-saving, and convenient for drum replacement. The second end of the dustproof cloth 200 is circumferentially sealed to the pressure plate of the grease pump 500. The curling mechanism 300 on the cover 100 is connected to the first end of the dustproof cloth 200. Before the pressure plate descends, the dustproof cloth 200 in the curling mechanism 300 is in a curled and contracted state. When the pressure plate presses down, the second end of the dustproof cloth 200 is driven downward by the pressure plate. The coupling device makes the side edges of adjacent dustproof cloths 200 automatically coupled. Even if the dustproof cloths 200 are arranged in sequence to form a relatively closed space, it prevents external pollutants from entering the pneumatic grease pump 500. The inner wall of the grease tank will not be covered with dust, ensuring the dustproof effect. When the grease pump 500 is lifted, the curling mechanism 300 can curl and gather the dustproof cloth 200. The gathered part automatically disengages, making the operation simple.
[0036] In some embodiments, the curling mechanism 300 includes two columns 301 disposed at both ends on the upper surface of the cover 100, a bearing 302 disposed at the top of the columns 301, and a winding rod 303 passing through the bearing 302. The winding rod 303 drives the dustproof cloth 200 to curl and gather. The bearing 302 ensures smooth rotation of the winding rod 303. The columns 301 position the winding rod 303 at a certain height above the cover 100, so that the curled dustproof cloth 200 has a space to accommodate it. The cover 100 has an arc-shaped groove 101 for passing the dustproof cloth 200 through, so that the dustproof cloth 200 extends downward in an arc shape, and the adjacent dustproof cloths 200 are arranged in a cylindrical shape.
[0037] In some embodiments, one end of the winding rod 303 is provided with an operating handle 304 for driving the winding rod 303 to rotate circumferentially, that is, the winding rod 303 can be manually retracted. Since the dustproof cloth 200 is made of flexible material, in most cases, it does not need to be retracted. When the pressure plate is lifted, the dustproof cloth 200 is in a curled state. In some embodiments, a power mechanism can be provided to drive the curling mechanism 300. The power mechanism drives the curling mechanism 300 to rotate forward or backward, thereby controlling the curling and retraction or lowering of the dustproof cloth 200. That is, the power mechanism moves with the movement of the pressure plate. When the pressure plate is lifted, it drives the winding rod 303 to rotate, causing the dustproof cloth 200 to be vortexed and stored, making its operation more intelligent and avoiding manual intervention.
[0038] In some embodiments, the power mechanism includes a pneumatic motor connected to the air passage of the grease pump 500. The direction of rotation of the pneumatic motor matches the direction of movement of the pressure plate. The pneumatic motor draws air from the grease pump 500. The forward and reverse rotation of the motor is controlled by a reversing valve that controls the lifting and lowering of the grease pump 500. This further reduces manual operation and enables the automatic collection and release of the dust cloth 200. The degree of automation is higher, the structure is simplified, and the control is more precise.
[0039] In this embodiment, the coupling mechanism includes a zipper disposed on the side edge of the dustproof cloth 200. The first end of the bottom of the cover 100 is provided with a fixing structure 401 for fixing the zipper, which can be a fixing post. The zipper cooperates with the zippers on the side edges of two adjacent dustproof cloths 200 to couple the zippers on the side edges of the dustproof cloths 200 below the fixing structure 401 and to disengage the zippers on the dustproof cloths 200 above the fixing structure 401. That is, when the pressure plate drives the dustproof cloth 200 to press down, the side edges of the dustproof cloth 200 are automatically coupled through the fixed zippers, and the winding rod 303 rotates and spirals back. The dustproof cloth 200 is separated at the zipper position, which simplifies the structure, makes the structural components highly replaceable, and facilitates maintenance. In other embodiments, the coupling mechanism may include a magnetic component disposed on the side edge of the dustproof cloth 200, and a separation structure for separating the magnetic component is provided at the first end of the bottom of the cover 100. The separation structure is used to separate the dustproof cloth 200 at the lower surface of the cover 100. The separation structure may be a non-magnetic column. When the side edge of the dustproof cloth 200 passes through this position upwards, it separates to both sides. When it passes through this position downwards, it is attracted by magnetic force to achieve a seal.
[0040] In some embodiments, the first end and the second end of the cover 100 are respectively provided with matching connection structures. If the fastening structure is damaged in some cases, the cover 100 can be connected by end bonding or end welding depending on the material of the cover 100.
[0041] Preferably, the cap is made of plastic, which makes the component lightweight, low-cost, and easier to assemble and disassemble; the whole structure is a split structure and is arc-shaped, which takes up little space before installation and is easy to assemble and disassemble.
[0042] On the other hand, a preferred embodiment of the present invention also provides a pneumatic grease pump 500, which incorporates the aforementioned dustproof device for the pneumatic grease pump 500.
[0043] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A dustproof device for a pneumatic grease pump (500), characterized in that, include: A cap for use on an oil drum, the cap being annular and composed of at least two arc-shaped cap bodies (100) joined together; A dustproof cloth (200) has its first end disposed on the cover (100) along the circumference of the cover (100), and its second end is circumferentially sealed to the pressure plate of the grease pump (500). A curling mechanism (300) is disposed on the cover (100) and connected to the first end of the dustproof cloth (200) for curling and shrinking the dustproof cloth (200) or lowering the dustproof cloth (200); A coupling mechanism is provided on the side edge of the dustproof cloth (200) for coupling the side edges of the dustproof cloth (200) on adjacent covers (100).
2. The dustproof device for a pneumatic grease pump (500) according to claim 1, characterized in that, The curling mechanism (300) includes two columns (301) disposed at both ends on the upper surface of the cover (100), a bearing (302) disposed at the top of the column (301), and a curling rod (303) passing through the bearing (302).
3. The dustproof device for a pneumatic grease pump (500) according to claim 2, characterized in that, One end of the winding rod (303) is provided with an operating handle (304) for driving the winding rod (303) to rotate circumferentially.
4. The dustproof device for a pneumatic grease pump (500) according to claim 1, characterized in that, The coupling mechanism includes a magnetic element disposed on the side edge of the dustproof cloth (200), and a separation structure for separating the magnetic element is provided at the first end of the bottom of the cover (100).
5. The dustproof device for a pneumatic grease pump (500) according to claim 1, characterized in that, The coupling mechanism includes a zipper disposed on the side edge of the dustproof cloth (200), and a fixing structure (401) for fixing a zipper is provided at the first end of the bottom of the cover (100). The zipper cooperates with the zippers on the side edges of two adjacent dustproof cloths (200) to couple the zippers on the side edges of the dustproof cloths (200) below the fixing structure (401) and to disengage the zippers on the dustproof cloths (200) above the fixing structure (401).
6. The dustproof device for a pneumatic grease pump (500) according to claim 1, characterized in that, The cover has an arc-shaped groove (101) for threading the dustproof cloth (200).
7. The dustproof device for a pneumatic grease pump (500) according to claim 1, characterized in that, The first and second ends of the cover (100) are respectively provided with matching connection structures, or the ends of adjacent covers (100) are bonded together, or the ends of adjacent covers (100) are welded together.
8. The dustproof device for a pneumatic grease pump (500) according to any one of claims 1-7, characterized in that, The curling mechanism (300) is connected to the power mechanism, which drives the curling mechanism (300) to rotate in the forward or reverse direction, thereby controlling the dustproof cloth (200) to curl, shrink or unroll.
9. The dustproof device for a pneumatic grease pump (500) according to claim 8, characterized in that, The power mechanism includes a pneumatic motor connected to the air passage of the grease pump (500), and the direction of rotation of the pneumatic motor matches the direction of movement of the pressure plate.
10. A pneumatic grease pump, characterized in that, The application has the dustproof device for a pneumatic grease pump as described in any one of claims 1-9.