Anti-backlash lubricating grease filling device
By introducing auxiliary cleaning support components and a dual valve body structure into the grease filling equipment, the problems of grease dripping and backflushing during the grease filling process are solved, realizing automated cleaning and an efficient and safe filling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO LUHAILIDA TRAFFIC EQUIP CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional grease filling equipment is prone to grease dripping and backflow after filling, and the existing equipment has insufficient sealing and reliability, resulting in low filling efficiency and safety hazards.
It adopts an auxiliary cleaning support component and a dual valve body structure, including a shut-off valve and a one-way check valve, combined with an automatic cleaning device to prevent grease backflow and achieve automatic cleaning of the filling head.
It achieves automated cleaning during the grease filling process, preventing grease dripping and backflow, improving filling efficiency and safety, and reducing the risk of equipment contamination.
Smart Images

Figure CN224411368U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grease filling technology, and in particular to a grease filling device with anti-backlash capability. Background Technology
[0002] Grease is a thick, oily, semi-solid used in the friction parts of machinery for lubrication and sealing. It is also used on metal surfaces to fill gaps and prevent rust. Grease is a commonly used lubricant in modern machinery. It can effectively ensure smoother connections between mechanical parts and increase the stability of equipment. Filling equipment is often required in the production of grease.
[0003] Traditional grease filling equipment suffers from two significant drawbacks during operation: First, after filling, dripping grease often adheres to the outside of the filling head. If not cleaned promptly, this not only wastes grease but also contaminates the subsequent filling environment and the tank. Traditional methods rely on frequent manual wiping, which is inefficient and fails to guarantee cleanliness, increasing operational burden and the risk of contamination. Second, when filling operations are paused or the equipment's internal pressure is unstable, the grease already filled into the connecting pipes is prone to backflow due to siphoning or gravity. This phenomenon can lead to residual grease flowing back into the pipes. If the grease flows back into the filling head outlet or even further into the feeding system, the backflow will not only seriously contaminate the filling head and cause residue to adhere to the filling port and block it, but may also cause the returned grease to enter the main feeding pipeline, causing raw material contamination or even deterioration. There is also a risk of environmental pollution or operator damage due to accidental backflow of lubricating grease. Although existing equipment generally uses simple shut-off valves, the reliability and sealing of a single valve body are limited. In the case of high viscosity media such as lubricating grease, the valve core is prone to sticking or delayed action, and cannot completely and effectively block backflow. The risk of backflow is significant, especially in filling scenarios with frequent start and stop. Utility Model Content
[0004] To overcome the technical defects of the existing technology, this utility model provides a backflow-proof grease filling device, which has the effect of preventing backflow of grease during the filling process and automatically cleaning the filling head.
[0005] The technical solution adopted by this utility model is as follows: a box body placed on the ground or tabletop, wherein the bottom inner wall and the top inner wall of the box body are respectively provided with an installation groove and a sliding groove, an auxiliary cleaning support component is fixedly installed inside the installation groove and the auxiliary cleaning support component is slidably installed inside the sliding groove, a control panel is installed on one side of the box body, a grease container is provided on the rear side of the box body, a connecting pipe is installed on the top of the grease container, and the other end of the connecting pipe passes through the top of the box body and is located inside the box body.
[0006] Preferably, in order to achieve precise filling control of the grease, a filling head for filling grease is fixedly installed at the other end of the connecting tube.
[0007] Preferably, in order to prevent the grease from flowing back during the filling process and to improve filling efficiency and safety, a shut-off valve and a one-way check valve are fixedly installed on the outside of the connecting pipe.
[0008] Preferably, in order to adjust the height of the support plate to accommodate tanks of different sizes for filling, the auxiliary cleaning support assembly includes a telescopic part and a support plate for placing the tank. The bottom of the telescopic part is fixedly installed inside the mounting groove, the bottom of the support plate is fixedly fixed to the top of the telescopic part, and a slider is slidably installed inside the groove, the slider being slidably engaged with the groove.
[0009] Preferably, in order to collect residual grease on the outside of the filling head and prevent grease from dripping onto the inner wall of the box and causing contamination, a connecting rod is fixed to the bottom of the slider, and a collection rack is fixedly installed at the bottom of the connecting rod.
[0010] Preferably, in order to clean the residual grease on the outside of the filling head, a rubber scraper for cleaning the filling head is fixedly installed on the top of the collection rack.
[0011] Preferably, in order to clean the filling head when changing the tank, a connecting rope is fixed to one side of the slider, and the other end of the connecting rope passes through one side and the bottom of the box and is fixed to the bottom of the support plate.
[0012] Preferably, in order to reset the slider and facilitate the cleaning of the filling head next time, a spring is fixedly connected to one side of the slider and the inside of the groove.
[0013] The beneficial effects of this utility model are as follows: Through the auxiliary cleaning support component, the lifting and lowering operation of the support plate will synchronously drive the slider to slide in the groove via the connecting rope. When the support plate descends, the connecting rope pulls the slider and the collection rack and rubber scraper fixed on the slider closer to the filling head, so that the rubber scraper fixed on the top of the collection rack can automatically scrape the dripping grease attached to the outside of the filling head and collect it into the collection rack. This eliminates the trouble of frequent manual wiping after traditional filling and realizes synchronous and automated cleaning of dripping grease. At the same time, with the double protection of the shut-off valve and the one-way check valve set on the outside of the connecting pipe, the grease backflow path can be reliably cut off, preventing grease backflow when filling stops or the tank is replaced. This significantly reduces the risk of grease backflow contaminating the filling head, connecting pipe and even the grease container, and improves the cleanliness and safety of the filling operation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a rear view schematic diagram of the overall structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the filling component structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the internal structure of the box body of this utility model;
[0018] Figure 5 This is a schematic diagram of the auxiliary cleaning support component structure of this utility model.
[0019] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Mounting groove; 3. Auxiliary cleaning support assembly; 301. Telescopic part; 302. Support plate; 303. Slider; 304. Spring; 305. Connecting rope; 306. Connecting rod; 307. Collection rack; 308. Rubber scraper; 4. Control panel; 5. Grease container; 6. Connecting pipe; 7. Shut-off valve; 8. One-way check valve; 9. Filling head; 10. Slide. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings:
[0021] like Figures 1-5 As shown, this embodiment provides a grease filling device with anti-backlash capability, including a box 1 placed on the ground or table. The bottom inner wall and top inner wall of the box 1 are respectively provided with an installation groove 2 and a sliding groove 10. An auxiliary cleaning support component 3 is fixedly installed inside the installation groove 2 and is slidably installed inside the sliding groove 10. A control panel 4 is installed on one side of the box 1. A grease container 5 is provided on the rear side of the box 1. A connecting pipe 6 is installed on the top of the grease container 5. The other end of the connecting pipe 6 passes through the top of the box 1 and is located inside the box 1. A filling head 9 for filling grease is fixedly installed on the other end of the connecting pipe 6 to facilitate filling the container with grease. A shut-off valve 7 and a one-way check valve 8 are fixedly installed on the outside of the connecting pipe 6.
[0022] In actual use, the operator can start the equipment through the control panel 4 and place the grease container to be filled on top of the auxiliary cleaning support assembly 3. The grease in the grease container 5 flows into the filling head 9 through the connecting pipe 6, thus enabling the filling operation. During the filling process, the shut-off valve 7 and the one-way check valve 8 work together to effectively prevent the backflow of grease, ensuring the stability and safety of the filling. After filling, the container can be removed. At the same time, the auxiliary cleaning support assembly 3 can clean the grease residue on the outside of the filling head 9, eliminating the trouble of frequent manual wiping after traditional filling, and significantly improving the filling efficiency and convenience of grease.
[0023] The shut-off valve 7 in this embodiment is made of high-performance sealing material, ensuring a tight fit between the valve core and the valve seat. Even under high pressure or high viscosity grease conditions, it can effectively prevent grease leakage and backflow, significantly improving the reliability and sealing performance of the equipment. In addition, the one-way check valve 8 has a sophisticated structural design and flexible valve disc opening and closing. It can open quickly in the direction of grease flow and close rapidly in the reverse flow, effectively blocking the backflow path of grease and further enhancing the anti-backflow capability of the equipment. Furthermore, the combined use of the one-way check valve 8 and the shut-off valve 7 forms a double insurance mechanism, ensuring stable grease filling even under conditions of frequent equipment start-ups and shutdowns or large pressure fluctuations, avoiding material waste, equipment contamination, and safety hazards caused by backflow.
[0024] As a technical optimization solution of this utility model, specifically as follows: Figure 5 As shown, the auxiliary cleaning support assembly 3 includes a telescopic part 301 and a support plate 302 for placing the tank. The bottom of the telescopic part 301 is fixedly installed inside the mounting groove 2. The telescopic part 301 provides support for the support plate 302 and can flexibly adjust the height of the support plate 302 according to the size of the tank. The bottom of the support plate 302 is fixed to the top of the telescopic part 301. A slider 303 is slidably installed inside the slide groove 10. The slider 303 is slidably engaged with the slide groove 10. The slide groove 10 has a limiting and guiding function for the slider 303, so that the slider 303 can only slide inside the slide groove 10. A connecting rod 306 is fixed to the bottom of the slider 303. The connecting rod 306 can connect the slider 303 and the collection rack 307 together. This allows the slider 303 to move synchronously with the collection rack 307 as it slides within the trough 10. The collection rack 307 is fixedly installed at the bottom of the connecting rod 306, and a rubber scraper 308 for cleaning the filling head 9 is fixedly installed at the top of the collection rack 307. A connecting rope 305 is fixed to one side of the slider 303, and the other end of the connecting rope 305 passes through one side and the bottom of the housing 1 and is fixed to the bottom of the support plate 302. The connecting rope 305 can connect the support plate 302 and the slider 303 together, so that the slider 303 can move inside the trough 10 while the support plate 302 moves up and down, which is convenient for cleaning the grease attached to the filling head 9. A spring 304 is fixedly connected to one side of the slider 303 and the inside of the trough 10.
[0025] In use, the operator places the can to be filled onto the support plate 302. The support plate 302 moves up and down under the action of the telescopic part 301 to a suitable height to accommodate cans of different sizes. After filling, the operator removes the can from the support plate 302. As the telescopic part 301 retracts, the connecting rope 305 connected to the bottom of the support plate 302 pulls the slider 303, the collection rack 307 fixed to the slider 303, and the rubber scraper 308 towards the filling head 9. The rubber scraper 308 contacts the filling head 9, enabling... The automatic scraper removes dripping grease from the outside of the filling head 9 and collects it in the collection rack 307. After scraping, the can to be filled is placed back on the support plate 302, and the telescopic part 301 is stretched. At the same time, the elastic force of the spring 304 drives the slider 303 to reset. The collection rack 307 and the rubber scraper 308 then move away from the filling head 9 and return to their initial positions. During the filling process, the operator does not need to manually wipe the filling head 9, which greatly improves work efficiency and keeps the filling environment clean. In addition, the grease in the collection rack 307 can be cleaned regularly to avoid waste of resources.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.
Claims
1. Anti-backlash grease filling apparatus comprising a cabinet (1) placed on the ground or on a bench, characterized in that: The bottom inner wall and top inner wall of the box (1) are respectively provided with an installation groove (2) and a sliding groove (10). An auxiliary cleaning support component (3) is fixedly installed inside the installation groove (2) and the auxiliary cleaning support component (3) is slidably installed inside the sliding groove (10). A control panel (4) is installed on one side of the box (1). A grease container (5) is provided on the rear side of the box (1). A connecting pipe (6) is installed on the top of the grease container (5). The other end of the connecting pipe (6) passes through the top of the box (1) and is located inside the box (1).
2. A backflash preventing grease filling apparatus according to claim 1, characterized in that: The other end of the connecting pipe (6) is fixedly installed with a filling head (9) for filling grease.
3. A backflash preventing grease filling apparatus according to claim 2, characterized in that: A shut-off valve (7) and a one-way check valve (8) are fixedly installed on the outside of the connecting pipe (6).
4. A backflash resistant grease filling apparatus as defined in claim 1, wherein: The auxiliary cleaning support assembly (3) includes a telescopic part (301) and a support plate (302) for placing the tank. The bottom of the telescopic part (301) is fixedly installed inside the mounting groove (2), and the bottom of the support plate (302) is fixed to the top of the telescopic part (301). A slider (303) is slidably installed inside the slide groove (10), and the slider (303) is slidably engaged with the slide groove (10).
5. A backflash preventing grease filling apparatus according to claim 4, characterized in that: A connecting rod (306) is fixed to the bottom of the slider (303), and a collection rack (307) is fixedly installed at the bottom of the connecting rod (306).
6. The anti-backlash grease filling equipment according to claim 5, characterized in that: The top of the collection rack (307) is fixedly equipped with a rubber scraper (308) for cleaning the filling head (9).
7. A backflash preventing grease filling apparatus according to claim 6, characterized in that: A connecting rope (305) is fixed to one side of the slider (303), and the other end of the connecting rope (305) passes through one side and the bottom of the box (1) and is fixed to the bottom of the support plate (302).
8. A backflash preventing grease filling apparatus according to claim 7, characterized in that: A spring (304) is fixedly connected to one side of the slider (303) and the inside side of the groove (10).