A sealed, leak-proof, pneumatic grease gun

Abstract

The utility model discloses a kind of sealed anti-leakage pneumatic grease gun, it is related to pneumatic grease gun technical field, including oil storage cylinder, outlet pipe, locking lever, the bottom end of the oil storage cylinder is connected with outlet pipe, and gas valve is set on outlet pipe, the bottom end of the oil storage cylinder side is provided with locking lever;The top end of the oil storage cylinder is connected with sealing cover, and sealing cover bottom end is provided with sealing assembly, and the top end of sealing cover side is connected with connector, and one end of connector is connected with oil outlet pipe.The utility model's pneumatic grease gun sealing effect is good, prevent gas and grease leak, during the connecting process of guide gas tank and butt joint ring, butt joint plate and fixed plate position correspond, and make plug-in rod insert into locking block, and make locking block and clamping block dislocation clamping, realize the preliminary fixation of both, then rotate fixed screw sleeve, screw on fixed column, further fixed can be realized, connection strength is high, and gas leakage prevention effect is good.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic grease gun technology, and in particular to a sealed and leak-proof pneumatic grease gun. Background Technology

[0002] In the many aspects of industrial production and mechanical equipment maintenance, lubrication is a key step to ensure stable equipment operation and extend service life. Grease, as a common lubricating material, is widely used for lubricating various bearings, gears, chains and other moving parts. A grease gun is a special tool used to accurately inject grease into these parts, and its performance directly affects the lubrication effect and work efficiency.

[0003] A high-sealing automatic pneumatic grease gun, with publication number CN217559535U, includes a storage tube with a sealing cap. The sealing cap has an oil dispensing mechanism, and the dispensing mechanism houses an air tank. An adjustment mechanism is located on one side of the air tank, and a sealing mechanism is located inside the air tank. A stabilizing mechanism is located on the storage tube. This invention strengthens the connection between the air tank and the sealing cap by using a sealing gasket and a fastening nut. Grease is loaded into the storage tube by unscrewing the sealing cap. By adjusting the locking lever, gas in the storage tube is discharged through the air outlet during grease addition, facilitating grease addition and improving efficiency. This avoids the problem of gas leakage from the air tank caused by the lack of a dedicated sealing device in existing grease guns, preventing the timely addition of grease.

[0004] When the aforementioned existing technology is used, the sealing method is singular when connecting with a gas tank, relying solely on a single threaded connection. This single sealing method results in poor vibration resistance. During the use of the gas tank, it may be affected by various vibrations, which can easily lead to loosening of the connection. Furthermore, during repeated inflation and deflation of the gas tank, the threaded connection will be subjected to alternating stress, causing fatigue cracks in the threads and reducing the connection strength. Therefore, corresponding improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a leak-proof pneumatic grease gun to solve the problem mentioned in the background art that the existing leak-proof pneumatic grease guns have a single sealing method and poor sealing effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealed and leak-proof pneumatic grease gun, comprising an oil reservoir, an air outlet pipe, and a locking rod, wherein the bottom end of the oil reservoir is connected to the air outlet pipe and an air valve is provided on the air outlet pipe, and a locking rod is provided on one side of the bottom end of the oil reservoir.

[0007] The top of the oil reservoir is connected to a sealing cap, and the bottom of the sealing cap is provided with a sealing component. A connector is connected to one side of the top of the sealing cap, and one end of the connector is connected to an oil outlet pipe. An oil valve is provided on the oil outlet pipe. A docking ring is fixed to one end of the connector, and a fixing mechanism is provided on one side of the docking ring. A gas guide canister is connected to one side of the fixing mechanism, and a gun handle is connected to one side of the gas guide canister. A rubber ring is connected to one end of the gas guide canister. A sealing groove is provided on one side of the docking ring. A trigger switch is connected to one side of the gun handle. A trigger is connected to the gun handle above the trigger switch. An external air pipe is connected to the bottom of the gun handle, and one end of the external air pipe is connected to an external air source for air supply. A conduction pipe is connected to one end of the gas guide canister, and one end of the conduction pipe extends into the docking ring.

[0008] Furthermore, the sealing assembly includes an inner sealing plug and an outer threaded ring fixed to the bottom end of the sealing cover. The outer threaded ring surrounds the outer periphery of the inner sealing plug, and a connecting pipe runs through the inside of the inner sealing plug, with one end of the connecting pipe connected to the bottom end of the connector.

[0009] Furthermore, an internal thread groove is provided on the inner wall of the top of the oil reservoir, and the internal thread groove is threadedly connected to the inner sealing plug. A sealing ring groove is provided at the top of the oil reservoir, and the sealing ring groove is threadedly connected to the external thread ring.

[0010] Furthermore, an arc-shaped notch is evenly provided on one side of the gun handle, and anti-slip protrusions are evenly connected on the inner wall of the arc-shaped notch.

[0011] Furthermore, the fixing mechanism includes a docking plate and a fixing plate. The docking plate is fixed to the outside of the air guide tank, and the fixing plate is fixed to the outside of the docking ring. Fixing holes are provided on both sides of the fixing plate, and locking blocks are connected to the inner walls of the two fixing holes.

[0012] Furthermore, each of the mating plates is fixed with a plug rod on one side, and each plug rod is connected to a snap-fit ​​block on both sides. One end of the plug rod is connected to a fixing post, and one end of the fixing post is threadedly connected to a fixing threaded sleeve.

[0013] Furthermore, both the locking block and the snap-fit ​​block are made of rubber, and the locking block and the snap-fit ​​block are staggered and snap-fitted together.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This leak-proof pneumatic grease gun offers excellent sealing, preventing gas and grease leakage. During the connection between the air canister and the docking ring, the docking plate and the fixing plate are aligned, and the insertion rod is inserted into the locking block. The locking block and the snap-fit ​​block are then misaligned and snapped together, achieving initial fixation. Next, the fixing threaded sleeve is rotated and screwed onto the fixing post for further fixation. The connection strength is high, and the gas leakage prevention effect is excellent. During this process, the rubber ring is inserted into the sealing groove for further sealing reinforcement. The rubber ring has excellent elasticity and plasticity, which can effectively fill the sealing gap. In addition, it has strong vibration resistance, making the connection effect better. This ensures stable air supply during grease gun use, preventing air leakage and avoiding unstable air pressure in the grease gun, ensuring uniform grease extrusion.

[0016] After grease is injected into the oil reservoir, the sealing cap is rotated to rotate the inner sealing plug. The inner sealing plug is connected to the inner thread groove to form the first layer of seal, which relies on the mechanical engagement and tight fit of the threads to prevent grease leakage. During this process, the outer thread ring is connected to the sealing ring groove to achieve the second layer of seal, which further enhances the sealing effect. The two layers of seal work together to ensure the airtightness of the oil reservoir. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a partial cross-sectional structure of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the sealing component of this utility model;

[0020] Figure 3 For the present utility model Figure 1 Schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a three-dimensional structural diagram of the fixing mechanism of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the docking ring of this utility model.

[0023] The following are the annotations in the diagram: 1. Oil reservoir; 101. Internal threaded groove; 2. Air outlet pipe; 201. Air valve; 3. Locking rod; 4. Sealing cap; 5. Oil outlet pipe; 501. Oil valve; 6. Connector; 7. Fixing mechanism; 701. Butt plate; 702. Fixing plate; 703. Fixing hole; 704. Locking block; 705. Insert rod; 706. Snap-fit ​​block; 707. Fixing post; 708. Fixing threaded sleeve; 8. Air canister; 801. Rubber ring; 9. Gun handle; 901. Arc-shaped notch; 902. Anti-slip protrusion; 10. Butt ring; 1001. Sealing groove; 11. Trigger switch; 12. Trigger; 13. External threaded ring; 14. Internal sealing plug; 1401. Connecting pipe; 15. Sealing ring groove; 16. External air pipe; 17. Conducting pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please see Figures 1-5 The present invention provides an embodiment of a leak-proof pneumatic grease gun, comprising an oil reservoir 1, an air outlet pipe 2, and a locking rod 3. The bottom end of the oil reservoir 1 is connected to the air outlet pipe 2, and an air valve 201 is provided on the air outlet pipe 2. The locking rod 3 is provided on one side of the bottom end of the oil reservoir 1. The top end of the oil reservoir 1 is connected to a sealing cap 4, and the bottom end of the sealing cap 4 is provided with a sealing assembly. The sealing assembly includes an inner sealing plug 14 and an outer threaded ring 13 fixed to the bottom end of the sealing cap 4. The outer threaded ring 13 surrounds the outer periphery of the inner sealing plug 14. A connecting pipe 1401 passes through the inner sealing plug 14, and one end of the connecting pipe 1401 is connected to the bottom end of the connector 6.

[0026] An internal thread groove 101 is provided on the inner wall of the top of the oil reservoir 1. The internal thread groove 101 is threadedly connected to the inner sealing plug 14. A sealing ring groove 15 is provided at the top of the oil reservoir 1, and the sealing ring groove 15 is threadedly connected to the external thread ring 13.

[0027] refer to Figure 1 , Figure 2 , Figure 5 When in use, the inner sealing plug 14 is threaded into the inner thread groove 101, and the outer thread ring 13 is threaded into the sealing ring groove 15, which can provide a double seal for the connection between the oil reservoir 1 and the sealing cover 4, ensuring the firmness of the connection between the two and preventing grease from leaking during use.

[0028] A connector 6 is connected to one side of the top of the sealing cap 4, and an oil outlet pipe 5 is connected to one end of the connector 6. An oil valve 501 is installed on the oil outlet pipe 5. A docking ring 10 is fixed to one end of the connector 6, and a fixing mechanism 7 is installed on one side of the docking ring 10. The fixing mechanism 7 includes a docking plate 701 and a fixing plate 702. The docking plate 701 is fixed to the outside of the air guide tank 8, and the fixing plate 702 is fixed to the outside of the docking ring 10. Fixing holes 703 are opened on both sides of the fixing plate 702, and locking blocks 704 are connected to the inner walls of both fixing holes 703. A plug rod 705 is fixed to one side of the docking plate 701, and a snap-fit ​​block 706 is connected to both sides of the plug rod 705. A fixing post 707 is connected to one end of the plug rod 705, and a fixing threaded sleeve 708 is threaded to one end of the fixing post 707.

[0029] refer to Figure 1 , Figure 3 , Figure 4 In use, the air guide tank 8 and the docking ring 10 are docked by inserting the transmission tube 17 into the docking ring 10, aligning the docking plate 701 and the fixing plate 702, and inserting the plug rod 705 into the fixing hole 703. The fixing post 707 passes through the fixing hole 703. Then, tighten the fixing threaded sleeve 708, where the diameter of the fixing threaded sleeve 708 is larger than the width of the fixing hole 703. The fixing threaded sleeve 708 is fixed to the fixing post 707, and the fixing post 707 is further fixed and limited, thereby realizing the connection and fixation of the air guide tank 8 and the docking ring 10.

[0030] Both locking block 704 and snap-fit ​​block 706 are made of rubber, and locking block 704 and snap-fit ​​block 706 are staggered and snap-fitted together;

[0031] refer to Figure 3 , Figure 4 When in use, both the rubber locking block 704 and the snap-fit ​​block 706 can deform to a certain extent, so that when the plug rod 705 is inserted into the fixing hole 703, the two are squeezed against each other until they are misaligned and snapped together, thus fixing and limiting the insertion of the plug rod 705.

[0032] One side of the fixed mechanism 7 is connected to the gas canister 8, and the other side of the gas canister 8 is connected to the gun handle 9. One end of the gas canister 8 is connected to the rubber ring 801, and the mating ring 10 is provided with a sealing groove 1001. The two cooperate with each other to achieve a sealed connection. The gun handle 9 is provided with arc-shaped recesses 901 evenly on one side, and anti-slip protrusions 902 are evenly connected on the inner wall of the arc-shaped recesses 901.

[0033] refer to Figure 1 When in use, multiple arc-shaped recesses 901 work in conjunction with anti-slip protrusions 902 to prevent slippage and affect operation.

[0034] A trigger switch 11 is connected to one side of the gun handle 9. A trigger 12 is connected to the gun handle 9 above the trigger switch 11. An external air tube 16 is connected to the bottom of the gun handle 9. One end of the external air tube 16 is connected to an external air source for air supply. One end of the gas canister 8 is connected to a conduction tube 17. One end of the conduction tube 17 extends into the docking ring 10.

[0035] Specifically, such as Figure 1 As shown, during use, the external air pipe 16 provides convenient air supply. Before filling the oil reservoir 1 with oil, the air in the oil reservoir 1 is emptied through the air outlet pipe 2 to prevent air resistance during the oil injection process.

[0036] Working principle: When using this utility model, firstly, rotate the sealing cover 4, the inner sealing plug 14 is threadedly engaged with the inner thread groove 101, and the outer thread ring 13 is threadedly engaged with the sealing ring groove 15, so that the inner sealing plug 14 can be unscrewed from the end of the oil reservoir 1. Then, inject an appropriate amount of grease into the oil reservoir 1. Then, perform the reverse operation to seal the sealing cover 4 and the oil reservoir 1.

[0037] Next, insert one end of the conduction tube 17 into the docking ring 10, and insert the insertion rod 705 on the docking plate 701 into the fixing hole 703 on the fixing plate 702. During the insertion process, the locking block 704 and the snap-fit ​​block 706 snap into each other until the fixing post 707 passes through the fixing hole 703. Then, rotate the fixing threaded sleeve 708 to tighten it onto the fixing post 707. This will further fix the snap-fit ​​block 706 and then firmly connect the docking plate 701 and the fixing plate 702 to prevent leakage during the gas supply process.

[0038] Next, connect one end of the external air pipe 16 to the external air supply equipment, and then continuously pull the trigger 12 so that the trigger 12 touches the trigger switch 11, and then spray grease from the oil outlet pipe 5. The oil valve 501 can be used to seal the port and prevent external impurities from entering.

[0039] 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.

[0040] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealed anti-leakage pneumatic grease gun, comprising a grease storage cylinder (1), an air outlet pipe (2) and a locking rod (3), the bottom end of the grease storage cylinder (1) is connected with the air outlet pipe (2), the air outlet pipe (2) is provided with an air valve (201), and the bottom end of the grease storage cylinder (1) is provided with the locking rod (3) on one side; characterized in that the top end of the grease storage cylinder (1) is connected with a sealing cover (4), the bottom end of the sealing cover (4) is provided with a sealing assembly, the top end of the sealing cover (4) is connected with a connector (6) on one side, one end of the connector (6) is connected with an oil outlet pipe (5), the oil outlet pipe (5) is provided with an oil valve (501), one end of the connector (6) is fixed with a butt joint ring (10), one side of the butt joint ring (10) is provided with a fixing mechanism (7), one side of the fixing mechanism (7) is connected with a gas guide tank (8), one side of the gas guide tank (8) is connected with a gun handle (9), one end of the gas guide tank (8) is connected with a rubber ring (801), one side of the butt joint ring (10) is provided with a sealing groove (1001), one side of the gun handle (9) is connected with a trigger switch (11), the gun handle (9) above the trigger switch (11) is connected with a trigger (12), the bottom end of the gun handle (9) is connected with an external air pipe (16), one end of the external air pipe (16) is connected with an external air source for air supply, one end of the gas guide tank (8) is connected with a conducting pipe (17), and one end of the conducting pipe (17) extends into the butt joint ring (10).

2. A sealed, leak-proof, pneumatic grease gun according to claim 1, wherein: The sealing assembly comprises an inner sealing plug (14) and an outer threaded ring (13) fixed to the bottom end of the sealing cover (4), the outer threaded ring (13) surrounds the outer periphery of the inner sealing plug (14), and the inner sealing plug (14) is penetrated by a communication pipe (1401) inside, and one end of the communication pipe (1401) is connected with the bottom end of the connector (6).

3. A sealed, leak-proof, pneumatic grease gun according to claim 1, wherein: The inner wall of the top end of the grease storage cylinder (1) is provided with an inner threaded groove (101), the inner threaded groove (101) is threadedly connected with the inner sealing plug (14), and the top end of the grease storage cylinder (1) is provided with a sealing ring groove (15), and the sealing ring groove (15) is threadedly connected with the outer threaded ring (13).

4. The sealed, leak-proof, air-pressurized grease gun of claim 1, wherein: One side of the gun handle (9) is uniformly provided with an arc-shaped notch (901), and the inner wall of the arc-shaped notch (901) is uniformly connected with an anti-skid protrusion (902).

5. The sealed, leak-proof, air-pressurized grease gun of claim 1, wherein: The fixing mechanism (7) comprises a butt joint plate (701) and a fixing plate (702), the butt joint plate (701) is fixed to the outer side of the gas guide tank (8), the fixing plate (702) is fixed to the outer side of the butt joint ring (10), and the fixing plate (702) is provided with a fixing hole (703) on both sides, and the inner walls of the fixing holes (703) are connected with locking blocks (704).

6. A sealed, leak-proof, pneumatic grease gun according to claim 5, wherein: One side of the butt joint plate (701) is fixed with a plug-in rod (705), and the plug-in rod (705) is connected with a clamping block (706) on both sides, one end of the plug-in rod (705) is connected with a fixing column (707), and one end of the fixing column (707) is threadedly connected with a fixing threaded sleeve (708).

7. A sealed, leak-proof, pneumatic grease gun according to claim 5, wherein: The locking blocks (704) and the clamping blocks (706) are made of rubber, and the locking blocks (704) and the clamping blocks (706) are mutually staggered and clamped.

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