Lubricating grease filling sealing structure
By designing a lubricating grease filling device for threaded connections and sealing rings, the problems of poor sealing and low filling efficiency were solved, achieving efficient lubrication and convenient cleaning, and avoiding grease leakage and environmental pollution.
Patent Information
- Application Number
- CN202520704605.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-04-15
AI Technical Summary
Existing lubricating grease filling devices suffer from poor sealing, low filling efficiency, and difficulty in cleaning, resulting in poor lubrication performance and potential environmental pollution and safety hazards.
A grease filling and sealing structure was designed, including a filling mechanism and a cleaning mechanism. The sealing of the filling process is ensured by threaded connection and the use of sealing rings and gaskets, and a movable ring and scraper cleaning cloth are provided to achieve rapid cleaning.
It improves the sealing and efficiency of lubricating grease filling, reduces grease leakage, simplifies the operation process, and reduces cleaning difficulty and cost.
Smart Images

Figure CN223768657U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical equipment lubrication technology, specifically to a lubricating grease filling and sealing structure. Background Technology
[0002] Lubricating oil is a technology-intensive product, a complex mixture of hydrocarbons, and its actual performance is a combination of complex physical and chemical changes. The basic properties of lubricating oil include general physicochemical properties, special physicochemical properties, and simulated bench tests. In the daily maintenance and upkeep of mechanical equipment, adding lubricating grease is a crucial step in ensuring normal equipment operation and extending its service life.
[0003] Traditional lubricating grease filling devices often suffer from problems such as poor sealing, low filling efficiency, and difficulty in cleaning. This not only affects the lubrication effect of the equipment, but may also cause environmental pollution and safety hazards due to grease leakage. Utility Model Content
[0004] The purpose of this invention is to provide a sealing structure for lubricating grease filling, so as to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lubricating grease filling and sealing structure, including a filling mechanism, and a cleaning mechanism is provided on the outside of the filling mechanism;
[0006] The filling mechanism includes an oil reservoir, a push block is movably connected inside the oil reservoir, a conical block is fixedly connected to the bottom left side of the push block, a connecting rod is fixedly connected to the right side of the push block, a handle is fixedly connected to the end of the connecting rod away from the push block, a nozzle is provided on the left side of the oil reservoir, a connecting ring is fixedly connected to the left side of the nozzle, a connecting frame is provided on the left side of the connecting ring, a hollow through hole is opened on the left side of the connecting frame, an extension tube is movably connected inside the through hole, a sealing gasket is fixedly connected to the right side of the extension tube, and an oil injection needle tube is fixedly connected to the left side of the extension tube.
[0007] Preferably, the end of the connecting rod away from the push block passes through the oil storage cylinder and extends to the right side of the oil storage cylinder, and a sealing ring is provided at the connection between the connecting rod and the oil storage cylinder.
[0008] Furthermore, the end of the connecting rod furthest from the push block is not only fixedly connected to the push block, but also runs through the entire oil reservoir and extends to its right side. This means that the connecting rod can act as an operating lever to push the push block inside the oil reservoir from the outside. At the same time, a sealing ring is provided at the connection between the connecting rod and the oil reservoir to ensure that grease does not leak from the connection.
[0009] Preferably, threaded grooves are provided on both the left side of the oil reservoir and the right side of the nozzle. The nozzle is threadedly connected to the left side of the oil reservoir through the threaded groove on the right side. A gasket is provided at the connection between the nozzle and the oil reservoir.
[0010] Furthermore, threaded grooves are provided on the left side of the oil reservoir and the right side of the nozzle, which allows the nozzle to be tightly connected to the oil reservoir via threads. In addition, gaskets are provided at the connection to further enhance the sealing of the connection and prevent grease leakage.
[0011] Preferably, threaded grooves are provided on the left side of the connecting ring and the right side inner wall of the connecting frame, and the connecting frame is threadedly connected to the left side of the connecting ring through the threaded groove on the right side inner wall.
[0012] Furthermore, the connecting ring is located on the left side of the nozzle, while the connecting frame is used to fix and support the extension tube. Threaded grooves are opened on the inner walls of the left side of the connecting ring and the right side of the connecting frame, so that the connecting frame can be tightly connected to the connecting ring through threads, thereby ensuring the stability and sealing of the entire filling mechanism.
[0013] Preferably, the sealing gasket is located on the inner left side wall of the connecting frame.
[0014] Furthermore, the sealing gasket is located on the left inner wall of the connecting frame and is fixedly connected to the right side of the extension tube. Its function is to ensure the sealing between the extension tube and the connecting frame and prevent grease from leaking during the filling process.
[0015] Preferably, the cleaning mechanism includes a movable ring, and a scraper and a cleaning cloth are respectively adhered to the left and right sides of the inner wall of the movable ring.
[0016] Preferably, the movable ring is fitted onto the outside of the oil storage tank.
[0017] Furthermore, the cleaning mechanism can operate independently of the filling mechanism, allowing users to clean and maintain the oil storage tank at any time.
[0018] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0019] First, before using this utility model, ensure that the inside of the oil reservoir is clean and filled with an appropriate amount of lubricating grease. This can be done by opening the filling port at the bottom of the oil reservoir. After the lubricating grease is filled, clean the outside of the oil reservoir using the cleaning mechanism. Then, connect the right side of the nozzle to the left side of the oil reservoir using a threaded connection. Hold the handle, which is an extension of the connecting rod, to push the push block and the conical block to move inside the oil reservoir. The sealing ring at the connection between the connecting rod and the right side of the oil reservoir prevents lubricating grease from leaking out from the right side of the oil reservoir. When the push block and the conical block move to the left side of the oil reservoir, they compress the lubricating grease inside the oil reservoir, causing it to flow out through the nozzle. The nozzle and oil reservoir are connected by threads and equipped with gaskets, ensuring a good seal and preventing grease leakage. Lubricating grease enters the connecting frame through the connecting ring and then flows through the extension tube. The extension tube's design allows the injection needle to reach hard-to-reach lubrication points. Align the injection needle with the area requiring lubrication and continuously push the handle until the desired amount of lubrication is achieved. Lubricating grease can be added with a simple pushing operation, without the need for complex settings or adjustments, thus improving work efficiency. The use of threaded connections and sealing gaskets, sealing rings, and gaskets ensures a tight seal during the filling process, preventing grease leakage and improving filling efficiency.
[0020] Secondly, this utility model places a movable ring on the outside of the oil reservoir. The scraper and cleaning cloth on the inner wall of the movable ring are used to scrape and wipe the residual grease on the outer wall of the oil reservoir, respectively. By rotating or moving the movable ring, it can be moved along the outer wall of the oil reservoir, thereby cleaning away all residues. This allows the residual grease on the outer wall of the oil reservoir after filling to be quickly scraped and wiped clean, reducing the time and cost of cleaning work. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a three-dimensional structural diagram of the filling mechanism of this utility model;
[0023] Figure 3 This is a schematic diagram of the exploded structure of this utility model;
[0024] Figure 4 This is a cross-sectional structural diagram of the present invention.
[0025] The components are as follows: 1. Filling mechanism; 101. Oil reservoir; 102. Push block; 103. Conical block; 104. Connecting rod; 105. Handle; 106. Nozzle; 107. Connecting ring; 108. Connecting frame; 109. Extension tube; 110. Sealing gasket; 111. Oil injection needle tube; 112. Sealing ring; 113. Gasket; 2. Cleaning mechanism; 201. Moving ring; 202. Scraper; 203. Cleaning cloth. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] This utility model provides the following technical solution:
[0028] Example 1
[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A lubricating grease filling and sealing structure includes a filling mechanism 1, and a cleaning mechanism 2 is provided on the outside of the filling mechanism 1;
[0030] The filling mechanism 1 includes an oil reservoir 101, a push block 102 is movably connected inside the oil reservoir 101, a conical block 103 is fixedly connected to the bottom left side of the push block 102, a connecting rod 104 is fixedly connected to the right side of the push block 102, a handle 105 is fixedly connected to the end of the connecting rod 104 away from the push block 102, a nozzle 106 is provided on the left side of the oil reservoir 101, a connecting ring 107 is fixedly connected to the left side of the nozzle 106, a connecting frame 108 is provided on the left side of the connecting ring 107, a hollow through hole is opened on the left side of the connecting frame 108, an extension tube 109 is movably connected inside the through hole, a sealing gasket 110 is fixedly connected to the right side of the extension tube 109, and an oil injection needle tube 111 is fixedly connected to the left side of the extension tube 109.
[0031] Specifically, the end of the connecting rod 104 away from the push block 102 passes through the oil reservoir 101 and extends to the right side of the oil reservoir 101. A sealing ring 112 is provided at the connection between the connecting rod 104 and the oil reservoir 101.
[0032] Specifically, threaded grooves are provided on the left side of the oil reservoir 101 and the right side of the nozzle 106. The nozzle 106 is threadedly connected to the left side of the oil reservoir 101 through the threaded groove on the right side. A gasket 113 is provided at the connection between the nozzle 106 and the oil reservoir 101.
[0033] Specifically, threaded grooves are provided on the left side of the connecting ring 107 and the right side inner wall of the connecting frame 108. The connecting frame 108 is threadedly connected to the left side of the connecting ring 107 through the threaded groove on the right inner wall.
[0034] Specifically, the sealing gasket 110 is located on the inner left side of the connecting frame 108.
[0035] With the above technical solution, before use, first ensure that the inside of the oil reservoir 101 is clean and filled with an appropriate amount of lubricating grease. This can be done by opening the filling port at the bottom of the oil reservoir 101. After the lubricating grease is filled, clean the outside of the oil reservoir 101 using the cleaning mechanism 2. Then, thread the right side of the nozzle 106 to the left side of the oil reservoir 101. Hold the handle 105, which is an extension of the connecting rod 104, to push the push block 102 and the conical block 103 to move inside the oil reservoir 101. The sealing ring 112 at the connection between the connecting rod 104 and the right side of the oil reservoir 101 prevents lubricating grease from leaking out from the right side of the oil reservoir 101. When the push block 102 and the conical block 103 move to the left side of the oil reservoir 101, they will compress the lubricating grease inside the oil reservoir 101. The lubricating grease flows out through the nozzle 106. Since the nozzle 106 is connected to the oil reservoir 101 by a thread and is equipped with a gasket 113, good sealing is ensured to prevent grease leakage. The lubricating grease enters the connecting frame 108 through the connecting ring 107 and then flows through the extension tube 109. The design of the extension tube 109 allows the injection needle tube 111 to reach hard-to-reach lubrication points. Align the injection needle tube 111 with the part that needs lubrication and continuously push the handle 105 until the required amount of lubrication is reached. The lubricating grease can be added by a simple pushing operation without complicated settings or adjustments, which improves work efficiency. The use of threaded connection and sealing gasket 110, sealing ring 112 and gasket 113 ensures the sealing during the filling process, avoids lubricating grease leakage, and improves filling efficiency.
[0036] Example 2
[0037] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Furthermore, based on Embodiment 1, the cleaning mechanism 2 includes a movable ring 201, with a scraper 202 and a cleaning cloth 203 respectively attached to the left and right sides of the inner wall of the movable ring 201.
[0038] Specifically, the movable ring 201 is set on the outside of the oil storage tank 101.
[0039] Through the above technical solution, the movable ring 201 is sleeved on the outside of the oil reservoir 101. The scraper 202 and cleaning cloth 203 on the inner wall of the movable ring 201 are used to scrape and wipe the residual grease on the outer wall of the oil reservoir 101, respectively. By rotating or moving the movable ring 201, it can be moved along the outer wall of the oil reservoir 101, thereby cleaning away all residues. This allows the residual grease on the outer wall of the oil reservoir 101 after filling to be quickly scraped and wiped clean, reducing the time and cost of cleaning work.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lubricating grease filling seal structure comprising a filling mechanism (1), characterized in that: The cleaning mechanism (2) is arranged outside the filling mechanism (1). The filling mechanism (1) comprises an oil storage cylinder (101), a push block (102) movably connected in the oil storage cylinder (101), a conical block (103) fixedly connected to the bottom left side of the push block (102), a connecting rod (104) fixedly connected to the right side of the push block (102), a handle (105) fixedly connected to the end of the connecting rod (104) away from the push block (102), a cylinder nozzle (106) arranged on the left side of the oil storage cylinder (101), a connecting ring (107) fixedly connected to the left side of the cylinder nozzle (106), a connecting frame (108) arranged on the left side of the connecting ring (107), a through hole with a hollow opening formed in the left side of the connecting frame (108), an extension tube (109) movably connected in the through hole, a sealing gasket (110) fixedly connected to the right side of the extension tube (109), and an oil injection needle tube (111) fixedly connected to the left side of the extension tube (109).
2. A lubricating grease filling seal structure according to claim 1, characterized by: The end of the connecting rod (104) away from the push block (102) penetrates through the oil storage cylinder (101) and extends to the right side of the oil storage cylinder (101), and a sealing ring (112) is arranged at the connecting position of the connecting rod (104) and the oil storage cylinder (101).
3. The lubricating grease fill seal structure of claim 1, wherein: Threaded grooves are formed in the left side of the oil storage cylinder (101) and the right side of the cylinder nozzle (106), the cylinder nozzle (106) is threadedly connected to the left side of the oil storage cylinder (101) through the threaded groove formed in the right side, and a gasket (113) is arranged at the connecting position of the cylinder nozzle (106) and the oil storage cylinder (101).
4. The lubricating grease fill seal structure of claim 1, wherein: Threaded grooves are formed in the left side of the connecting ring (107) and the right side inner wall of the connecting frame (108), and the connecting frame (108) is threadedly connected to the left side of the connecting ring (107) through the threaded groove formed in the right side inner wall.
5. The lubricating grease fill seal structure of claim 1, wherein: The sealing gasket (110) is located on the left side inner wall of the connecting frame (108).
6. A lubricating grease fill seal according to claim 1, wherein: The cleaning mechanism (2) comprises a movable ring (201), and the inner wall of the movable ring (201) is respectively bonded with a scraper (202) and a cleaning cloth (203) on the left and right sides.
7. A lubricating grease filling seal according to claim 6, characterised in that: The movable ring (201) is sleeved outside the oil storage cylinder (101).