Grease gun grease atomization device

Abstract

This invention provides a grease atomization device for a grease gun that can smoothly and uniformly spray grease from the grease gun. [Solution] Used to spray atomized grease onto the outer surface of large machine parts, the gun body 10 is provided with a grease outlet pipe 12 and an atomizing nozzle 2 located at its front end. The end of the gun body is connected to a pressure source. A flow divider switch 3 is also provided, which is located on the gun body and is used to divide the pressure source into two. Some of the air pressure flows into the gun body and pressurizes the piston chamber 13 to eject the grease, while the other portion of the air pressure flows into the atomizing nozzle via the hose 32, accelerating the airflow due to a structure in which the hole diameter gradually decreases. By pressurizing the piston chamber and atomizing the grease with airflow, grease can be smoothly and uniformly sprayed from the grease gun 1.

Description

Technical Field

[0001] The present invention belongs to the technical field of grease lubrication tools, and particularly relates to a grease atomizing device (spraying device) of a grease gun that can be widely used in large machines.

Background Art

[0002] As is well known, a grease gun is used to lubricate the joints of mechanical devices or the male and female joints of some parts to reduce wear and extend the service life. However, in some large machines, due to the large area of joints and the like, it is necessary to use a grease gun to spray grease over a wide range on the surface of large machine parts.

[0003] As shown in FIG. 10, a conventional grease gun 9 is shown (Chinese Utility Model CN217559535, "Highly Sealed Automatic Air Grease Gun"). The grease gun includes a gun body 91 having a grease tank 911, a lever 92, a first pressure source 93, and a second pressure source 94. The first pressure source 93 is connected below the gun body 91, and the second pressure source 94 is connected below the grease tank 911. During use, when the lever 92 is operated, the first pressure source 93 and the second pressure source 94 cooperate to eject the grease in the gun body 91 and spray grease over a wide range on the surface of mechanical parts.

[0004] However, since the conventional grease gun 9 directly pushes out grease using the second pressure source 94, it takes a long time when the spraying area of ​​large machine parts is large. Also, due to its structure, the conventional grease gun 9 tends to have trouble keeping up with the pushing action of the pressure source, requiring the use of two pressure sources, which tends to result in intermittent grease spraying, and the sprayed grease often has an uneven size. Consequently, the operator has to reapply the large-sized grease sprayed onto the surface of the large machine parts, making lubrication work inconvenient and resulting in poor efficiency for lubricating large machine parts. Therefore, it is necessary to propose a connection structure to improve the connection type of the conventional grease gun 9. [Overview of the project] [Problems that the invention aims to solve]

[0005] To overcome the shortcomings of conventional grease guns, the present invention has invested considerable effort in developing a grease atomizing device applicable to the grease gun of the present invention. The objective of the present invention is to provide a grease atomizing device for a grease gun that can perform smooth and uniform spraying using only a single pressure source. Another objective of the present invention is to provide a grease gun that is highly adaptable (wide range of applications) and easy to install. [Means for solving the problem]

[0006] To achieve the above objectives, the present invention provides the following technical solutions. The present invention is a grease atomizing device for a grease gun, comprising a grease gun, an atomizing nozzle, and a flow divider switch, wherein the gun body of the grease gun is provided with a grease storage area and a grease outlet pipe having a multi-stage internal bore, the grease storage area is in communication with the grease outlet pipe, an air pressure passage is provided at the end of the gun body, the atomizing nozzle is provided with an atomizing passage and a gas passage inside, the gas passage is in communication with the atomizing passage, the atomizing nozzle is installed at the front end of the grease outlet pipe and is in communication with the front end of the grease outlet pipe, and the atomizing The present invention provides a grease atomizing device for a grease gun, wherein the passage comprises a connecting portion, a constricted portion, and an atomizing portion, extending from the inside out, the connecting portion being provided to connect to the front end of the grease outlet pipe, the flow diversion switch being provided on the gun body and comprising a flow diversion assembly and a hose, one end of the hose being connected to the flow diversion assembly provided on the flow diversion switch, the other end of the hose being connected to the gas passage of the atomizing nozzle, and the flow diversion switch being provided to connect to the pressure inlet provided in the air pressure passage provided on the gun body.

[0007] The multi-stage internal bore provided in the grease outlet pipe comprises a first-stage internal bore, a second-stage internal bore, and a third-stage internal bore, arranged from the inside outwards. The diameter of the first-stage internal bore is 0.5 to 3 times larger than the diameter of the second-stage internal bore, the diameter of the second-stage internal bore is 0.5 to 4 times larger than the diameter of the third-stage internal bore, and the ratio of the diameter of the third-stage internal bore to the length of the third-stage internal bore is 1 / 2 to 1 / 6.

[0008] The gas passage of the atomizing nozzle is connected perpendicular to the atomizing passage, and the constricted portion has a conical angle, which is 40° to 60°.

[0009] A first channel and a second channel are provided inside the flow division assembly, the first channel is connected to the second channel via a control area, and an operating switch is provided which is fitted into the control area, the first channel is connected to the air inlet provided in the gun body, and the second channel is connected to the inlet of the hose.

[0010] The operating switch comprises a locking portion, a rotating rod, and a spring. The surface of the flow distribution assembly is provided with a hole that penetrates the control region, the locking portion is provided within the hole, the rotating rod is provided with a release groove and a tightening groove corresponding to the locking portion, the bottom end of the rotating rod abuts against one end of the spring, and the other end of the spring abuts against the bottom of the control region.

[0011] The flow divider switch is connected to an external pressure source, and the high-pressure gas from the pressure source passes through the flow divider assembly provided in the flow divider switch. The pressure of the high-pressure gas is divided through the first flow path to form a first atmosphere and then divided through the second flow path to form a second atmosphere.

[0012] The first atmospheric pressure causes the grease located in the grease storage area to flow out towards the grease outlet pipe. When the grease flows into the atomizing passage of the atomizing nozzle, it is simultaneously subjected to the forces of the first atmospheric pressure and the second atmospheric pressure, and is pushed outwards, resulting in continuous and uniform ejection.

[0013] The total frictional force between the grease and the inner wall of the grease outlet tube and the frictional force between each molecule of the grease is defined as the viscous resistance force. When the grease is pressed by the first atmosphere of pressure, the grease located in the third stage inner bore provided in the multi-stage inner bore is drawn in by the force of the second atmosphere of pressure, and the total force formed by the force of the first atmosphere of pressure and the force of the second atmosphere of pressure is greater than the viscous resistance force.

[0014] When the locking portion engages with the release groove of the rotating rod, the first flow path and the second flow path become open, and when the locking portion engages with the tightening groove of the rotating rod, the first flow path and the second flow path become sealed.

[0015] The gun body is provided with a piston chamber, the piston chamber is in communication with the air pressure passage and the grease outlet pipe, and the grease outlet pipe is connected to the front end of the gun body via an extension rod. [Effects of the Invention]

[0016] 1. The present invention provides a flow splitter switch in the gun body of the grease gun, which allows the air pressure from a single air pressure source to be split into two when it passes through the flow splitter switch. One of these air pressures enters the air pressure passage provided in the gun body and, through the piston chamber, pushes the grease in the grease storage area into the atomizing passage provided in the atomizing nozzle. The other air pressure enters the hose and flows into the gas passage provided in the atomizing nozzle, acting around the grease in the atomizing passage (acting around the grease and applying air pressure to the grease). The piston chamber allows the grease to flow into the atomizing passage, and by utilizing the structure in which the diameter of the hole gradually decreases, the flow of the other air pressure that has flowed into the atomizing passage is accelerated, allowing the grease to be uniformly ejected and sprayed onto a wide range of machine parts surfaces.

[0017] 2. The present invention involves attaching the atomizing nozzle, the grease outlet pipe (and the extension rod), the flow diversion switch, and a hose to a conventional grease gun, operating the flow diversion switch to allow the air pressure from the pressure source to flow into the first and second flow paths, respectively, and then uniformly spraying (applying) grease to a wide area of ​​machine parts surface using the atomizing nozzle. When the atomizing nozzle, the grease outlet pipe (and the extension rod), the hose, etc. are removed from the grease gun, the flow diversion switch is operated to block communication between the first and second flow paths, while maintaining communication of the pressure source between the first flow path and the pneumatic flow path, thereby allowing the grease gun to perform its general function of injecting grease into the grease nozzle again. [Brief explanation of the drawing]

[0018] [Figure 1] This is a conceptual diagram of the structure of the grease gun and its grease atomizing device according to the present invention. [Figure 2] This is an exploded view of the grease atomizing device of the present invention and an enlarged exploded view of its flow diversion switch. [Figure 3] This is an enlarged view of the grease outlet pipe of the present invention. [Figure 4] This is a cross-sectional view and an enlarged view of the atomizing nozzle of the grease gun and grease atomizing apparatus of the present invention. [Figure 5] Figure 4 is a cross-sectional view of the XX structure of the present invention shown in Figure 4. [Figure 6] This figure shows the state in which the release groove provided on the rotating rod of the current diversion switch shown in Figure 5 is engaged with the locking part. [Figure 7] This is a conceptual diagram illustrating the state in which the first atmospheric pressure of the present invention presses against the piston chamber, pushing the grease forward. [Figure 8] This is a conceptual diagram showing the state in which grease located inside the atomizing nozzle and the grease atomized by the second atmospheric pressure are ejected. [Figure 9] This is a conceptual diagram showing another embodiment of the grease gun and its grease atomizing device according to the present invention. [Figure 10] It is a structural conceptual diagram of a conventional grease gun.

Embodiment for Carrying out the Invention

[0019] The present invention relates to a grease atomization device of a grease gun. As shown in FIG. 1, the present invention provides a grease atomization device A for smoothly and uniformly spraying grease onto large mechanical parts, which includes a grease gun 1, an atomizing nozzle 2, and a flow splitting switch 3. Hereinafter, the structure of the present invention will be described in detail with reference to the drawings.

[0020] As shown in FIGS. 2 and 3 for example, the grease gun 1 is provided with a grease storage region 11 and a grease delivery pipe 12 having a multi-stage inner hole 120 in a gun body 10. The ratio of the minimum hole diameter d3 to the length L of the multi-stage inner hole 120 is 1 / 2 to 1 / 6 (it is preferable that the ratio of d3 / L is 1 / 4). The grease storage region 11 is connected to the grease delivery pipe 12. Usually, the grease storage region 11 is a grease tank for continuously supplying grease. Further, a piston chamber 13 is provided in the gun body 10, and a pneumatic flow path 15 is connected to the end of the piston chamber 13. The piston chamber 13 is pressed by the high-pressure gas flowing in from the pneumatic flow path 15, so that the grease is pressed from the grease storage region 11 and flows into the multi-stage inner hole 120 in the grease delivery pipe 12. Incidentally, the end of the grease delivery pipe 12 can be connected to the front end 101 of the gun body 10 by an extended rod 124 to be added. In this case, the length of the extended rod 124 is adjustable, and the grease delivery pipe 12 can spray grease at a place far from the user, which not only prevents the atomized grease from being sprayed onto the user, but also can spray the atomized grease onto large mechanical parts located at a far place and requiring lubrication.

[0021] The multi-stage inner bore 120 provided in the grease outlet pipe 12 is provided with a first-stage inner bore 121, a second-stage inner bore 122, and a third-stage inner bore 123, arranged from the inside outwards (in the direction of spraying from the grease gun body). The bore diameter d1 of the first-stage inner bore 121 is larger than the bore diameter d2 of the second-stage inner bore 122, and preferably the difference in the bore diameter d1 of the first-stage inner bore 121 compared to the bore diameter d2 of the second-stage inner bore 122 is 0.5 to 3 times (more preferably 2 times) the bore diameter d2 of the second-stage inner bore 122 (i.e., d1 - d2 = d2 × (0.5 to 3)). The diameter d2 of the second-stage inner hole 122 is larger than the diameter d3 of the third-stage inner hole 123, preferably the difference in the diameter d2 of the second-stage inner hole 122 compared to the diameter d3 of the third-stage inner hole 123 is 0.5 to 4 times (more preferably 3.5 times) the diameter d3 of the third-stage inner hole 123 (i.e., d2 - d3 = d3 × (0.5 to 4)). In other words, the third-stage inner hole 123 is the multi-stage inner hole 120 with the smallest diameter. As the diameter of the multi-stage inner hole 120 provided in the grease outlet pipe 12 gradually decreases, the grease 6 flows more easily into the inside of the atomizing nozzle 2.

[0022] As shown in Figure 4, the atomizing nozzle 2 is provided with an atomizing passage 21 and a gas passage 22 inside, with the gas passage 22 communicating with the atomizing passage 21. The atomizing passage 21 comprises a coupling portion 211, a retractable portion 212, and an atomizing portion 213, arranged from the inside out. The coupling portion 211 is connected to the front end of the grease outlet pipe 12 by a male-female screw system, and the atomizing passage 21 surrounds the second stage inner hole 122 and the third stage inner hole 123 of the multi-stage inner hole 120 provided in the grease outlet pipe 12 (it is provided so as to surround the outer circumference of the second stage inner hole 122 and the third stage inner hole 123), and is communicating with the retractable portion 212. The gas passage 22 is connected to the atomization passage 21 in a direction perpendicular to the atomization passage 21, so that the high-pressure gas delivered from the hose 32 flows into the gas passage 22 and the atomization passage 21.

[0023] As shown in Figures 2 and 4 to 6, the flow diversion switch 3 is mounted on the gun body 10 and comprises a flow diversion assembly 31 and a hose 32. One end of the hose 32 is connected to the flow diversion assembly 31, and the other end of the hose 32 is connected to the gas passage 22 of the atomizing nozzle 2. The flow diversion switch 3 is configured to connect to the pressure inlet 151 of the air pressure passage 15 provided on the gun body 10. Inside the flow diversion assembly 31 are a first passage 311 and a second passage 312, and the first passage 311 communicates with the second passage 312 via a control area 313. Corresponding to the above structure, the first passage 311 communicates with the pressure inlet 151, and the second passage 312 is connected to the inlet of the hose 32.

[0024] As shown in Figure 7, by operating the flow diversion switch 3, the high-pressure gas from the pressure source 4 can be "divided into two streams" or "blocked" by the flow path of the flow diversion switch 3. "Dividing into two streams" means that the high-pressure gas flowing into the grease gun 1 is divided (split) by the flow diversion switch 3 as a pressure-induced flow to the first flow path 311, and then flows into the pneumatic flow path 15 via the pressure inlet 151. This incoming pressure-induced flow operates the piston chamber 13, pushing out the grease in the grease storage area 11. On the other hand, the other portion of the high-pressure gas is divided (split) as another pressure-induced flow by the second flow path 312 provided in the flow diversion switch 3 and flows into the gas passage 22 and the atomizing passage 21 provided inside the atomizing nozzle 2.

[0025] As described above, the preferred solution for the grease atomizing device of a grease gun provided by the present invention has the following characteristics. First, a grease outlet pipe 12 is provided at the front end 101 of the gun body 10 provided on the grease gun 1, and an atomizing nozzle 2 is provided at the front end of the grease outlet pipe 12, the front end of the grease outlet pipe 12 is in communication with the corresponding retracted portion 212 of the atomizing nozzle 2, and the retracted portion 212 has a cone angle Q (angle of reduction in diameter, angle of the apex of the cone structure, that is, the angle of the apex in a cross section that passes through the apex of the cone structure and is perpendicular to the base), and the cone angle Q is 40° to 60°. Next, the air pressure inlet 151 located at the front end of the air pressure passage 15 provided in the grease gun 1 is connected to the flow diversion switch 3, and the hose 32 is connected to the second passage 312 of the flow diversion switch 3 and the gas passage 22 of the atomization passage 21, and is also connected between the second passage 312 of the flow diversion switch 3 and the gas passage 22 of the atomization passage 21.

[0026] An external pressure source 4 is connected to the first flow path 311 of the flow divider switch 3, and the pressure source 4 supplies high-pressure gas. The high-pressure gas that passes through the first flow path 311 forms a first atmosphere, and the high-pressure gas that passes through the second flow path 312 forms a second atmosphere. The first atmosphere reaches the piston chamber 13 via the pneumatic flow path 15, and the second atmosphere reaches the gas passage 22 and the atomization passage 21 via the hose 32 (that is, the atmosphere in the pneumatic flow path 15 and the piston chamber 13 that are connected to the first flow path 311 is the first atmosphere, and the atmosphere in the hose 32, the gas passage 22 and the atomization passage 21 that are connected to the second flow path 312 is the second atmosphere, with the first atmosphere acting on the piston chamber 13 and the second atmosphere acting on the gas passage 22 and the atomization passage 21). Generally, the pressure of the first atmosphere is equal to the pressure of the second atmosphere.

[0027] As shown in Figures 2 to 6, the present invention further comprises an operating switch 5, which is located inside the control region 313 provided in the flow diversion assembly 31. The control region 313 is located between the first flow path 311 and the second flow path 312. The operating switch 5 comprises a locking portion (trip structure) 51, a rotating rod 52, and a spring 53. A hole 314 is provided on the surface of the flow diversion assembly 31, the hole 314 penetrates the control region 313, and the locking portion 51 is inserted into and fixed inside the hole 314 (i.e., a portion of the locking portion 51 is located inside the control region 313). The rotating rod 52 is equipped with a release groove 521 and a tightening groove 522 and corresponds to the locking portion 51. The bottom end of the rotating rod 52 abuts against one end of the spring 53, and the other end of the spring 53 abuts against the bottom of the control region 313. When the locking portion 51 engages with the tightening groove 522 of the rotating rod 52 and compresses the spring 53, the space between the first flow path 311 and the second flow path 312 is maintained in a sealed state. At this time, when the rotating rod 52 is rotated, the spring 53 provides a restoring elastic force, and the locking portion 51 engages with the release groove 521 and is positioned. As a result, the space between the first flow path 311 and the second flow path 312 is maintained in a state of communication. In this way, the operation switch 5 can create the second atmospheric pressure (make the second atmospheric pressure applicable) by controlling whether a portion of the pressure of the high-pressure gas flows into the second flow path 312.

[0028] As shown in Figures 3, 7, and 8, when the user pulls the lever 14 of the grease gun 1, the first atmosphere of pressure enters the piston chamber 13, forming a force P1 of the first atmosphere, which operates the piston chamber 13 and pushes grease from the grease storage area 11 to the grease outlet pipe 12. At this time, when the grease flows into the atomization passage 21, the gas passage 22 is filled with the second atmosphere of pressure, so the second atmosphere of pressure flows into the atomization passage 21 and the gas passage 22, surrounding the grease located at the front end of the grease outlet pipe 12 (acting around the grease and applying atmospheric pressure to the grease), and a force P2 of the second atmosphere of pressure is formed at the constricted section 212, and this pressure atomizes the grease, which is then ejected from the atomization section 213. In other words, if the total frictional force between the grease, the inner wall of the grease outlet pipe 12, and each molecule of the grease is defined as the viscous resistance force P3, then the viscous resistance force P3 is pushed by the first atmospheric pressure force P1, while at the same time, the second atmospheric pressure surrounds the grease at the atomizing nozzle 2 connected to the front end of the grease outlet pipe 12 (acting around the grease and applying atmospheric pressure to it), forming the second atmospheric pressure force P2. The total force P formed by the sum of the first atmospheric pressure force P1 and the second atmospheric pressure force P2 is greater than the viscous resistance force P3, thus achieving the objective of the present invention, which is to spray the grease smoothly and uniformly. In other words, the present invention accelerates the flow of the incoming second atmosphere by reducing the diameter of the holes in the provided atomizing passage 21, and further pressurizes the grease by working in cooperation with the incoming first atmosphere to press against the piston chamber 13, thereby enabling the grease located in the third stage inner hole 123 provided at the front end of the grease outlet pipe 12 to be smoothly and uniformly atomized and ejected to the outside of the atomizing nozzle 2.

[0029] Furthermore, the present invention provides another solution for a grease atomizing device for a grease gun. For example, as shown in Figure 9, the grease gun 1b of the grease atomizing device B is a pneumatic grease gun, and the grease gun 1b is mounted on top of a grease tank to form the grease storage area 11b. The grease gun 1b is provided with a pump 13b, an air pressure passage 15b, and a grease outlet pipe 12b. The grease outlet pipe 12b is connected to the atomizing nozzle 2, the air pressure passage 15b is connected to the flow diversion switch 3, and the hose 32 is connected to the flow diversion switch 3 and the atomizing nozzle 2, so that it can be applied to different types of grease guns, grease machines, or pneumatic grease guns, etc.

[0030] Furthermore, when removing the atomizing nozzle 2, the grease outlet pipe 12 (and the extension rod 124), the hose 32, etc. from the grease gun 1, by operating the flow diversion switch 3 to block communication between the first flow path 311 and the second flow path 312, and maintaining only the flow of the pressure source 4 into the first flow path 311 and the air pressure flow path 15 in the gun body 10, the grease gun 1 can once again perform its general function of injecting grease into the grease nozzle. [Explanation of Symbols]

[0031] A: Grease atomizing device B: Grease atomizer 1, 1b: Grease gun 10: Gun body 101: Front end 11, 11b: Grease storage area (grease tank) 12, 12b: Grease outlet tube 120: Multi-stage internal bore (multi-diameter internal bore structure) 121: First stage internal bore (first diameter internal bore) 122: Second stage internal bore (second diameter internal bore) 123: Third stage internal bore (third diameter internal bore) 124: Extension Rod 13: Piston chamber 13b: Pump 14: Lever 15, 15b: Pneumatic flow path 151: Pressure Inlet 2: Atomizing nozzle 21: Atomization passage 211:Joining part 212: Retraction part 213: Atomization section 22: Gas passage 3: Shunt switch 31: Current distribution assembly 311: First channel 312: Second channel 313: Control Domain 314: Hole 32: Hose 4: Pressure source 5: Operation switch 51: Locking part 52: Rotating Rod 521: Release groove (loosening prevention groove) 522: Tightening groove 53: Spring 6: Grease P: Total force P1: Force at 1 atmosphere P2: Force at 2 atmospheres P3: Viscous resistance Q: Cone angle (angle of reduction in diameter, angle of the apex of a cone structure) [Conventional technology] 9: Conventional grease gun 91: Gun body 911: Grease tank 92: Lever 93: First pressure source 94: Second pressure source

Claims

1. A grease atomizing device for a grease gun, comprising a grease gun, an atomizing nozzle, and a flow divider switch, The gun body of the grease gun is provided with a grease storage area and a grease outlet pipe having a multi-stage internal bore, the grease storage area is connected to the grease outlet pipe, and an air pressure passage is provided at the end of the gun body. The atomizing nozzle is provided with an atomizing passage and a gas passage inside, the gas passage being in communication with the atomizing passage, the atomizing nozzle is installed at the front end of the grease outlet pipe and is in communication with the front end of the grease outlet pipe, the atomizing passage comprises a coupling portion, a constricted portion, and an atomizing portion from the inside out, the coupling portion being used to connect to the front end of the grease outlet pipe. A grease atomizing device for a grease gun, characterized in that the flow diversion switch is provided on the gun body and comprises a flow diversion assembly and a hose, one end of the hose is connected to the flow diversion assembly provided on the flow diversion switch, the other end of the hose is connected to the gas passage of the atomizing nozzle, and the flow diversion switch is provided to connect to the pressure inlet of the air pressure passage of the gun body.

2. The grease spraying device for a grease gun according to claim 1, characterized in that the multi-stage internal bore provided in the grease outlet pipe comprises a first-stage internal bore, a second-stage internal bore, and a third-stage internal bore, arranged from the inside out, wherein the diameter of the first-stage internal bore is 0.5 to 3 times larger than the diameter of the second-stage internal bore, the diameter of the second-stage internal bore is 0.5 to 4 times larger than the diameter of the third-stage internal bore, and the ratio of the diameter of the third-stage internal bore to the length of the third-stage internal bore is 1 / 2 to 1 / 6.

3. The grease atomizing device for a grease gun according to claim 1, characterized in that the gas passage of the atomizing nozzle is connected perpendicular to the atomizing passage, the retracted portion has a conical angle, and the conical angle is 40° to 60°.

4. The grease spraying device for a grease gun according to claim 1, characterized in that a first flow path and a second flow path are provided inside the flow division assembly, the first flow path is in communication with the second flow path via a control region and an operating switch is provided which is fitted into the control region, the first flow path is in communication with the air inlet provided in the gun body, and the second flow path is in communication with the inlet of the hose.

5. The grease spraying device for a grease gun according to claim 4, wherein the operating switch comprises a locking portion, a rotating rod, and a spring, a hole is provided on the surface of the flow distribution assembly that penetrates the control area, the locking portion is provided within the hole, the rotating rod is provided with a release groove and a tightening groove corresponding to the locking portion, the bottom end of the rotating rod abuts against one end of the spring, and the other end of the spring abuts against the bottom of the control area.

6. The grease atomizing device for a grease gun according to claim 4, characterized in that the flow diversion switch is connected to an external pressure source, the high-pressure gas of the pressure source passes through the flow diversion assembly provided in the flow diversion switch, the pressure of the high-pressure gas is divided through the first flow path to form a first atmosphere, and is divided through the second flow path to form a second atmosphere.

7. The grease atomizing device for a grease gun according to claim 6, characterized in that the first atmospheric pressure causes the grease located in the grease storage area to flow out toward the grease discharge pipe, and when the grease flows into the atomizing passage of the atomizing nozzle, the grease is simultaneously subjected to the forces of the first atmospheric pressure and the second atmospheric pressure and is pushed out to the outside, resulting in continuous and uniform ejection.

8. The grease spraying device for a grease gun according to claim 7, characterized in that the total frictional force between the grease and the inner wall of the grease outlet pipe and the frictional force between each molecule of the grease is defined as the viscous resistance force, when the grease is pressed by the first atmosphere of pressure, the grease located in the third stage inner bore provided in the multi-stage inner bore is drawn in by the force of the second atmosphere of pressure, and the total force formed by the force of the first atmosphere of pressure and the force of the second atmosphere of pressure is greater than the viscous resistance force.

9. The grease spraying device for a grease gun according to claim 5, characterized in that when the locking portion engages with the release groove of the rotating rod, the space between the first flow path and the second flow path becomes open, and when the locking portion engages with the tightening groove of the rotating rod, the space between the first flow path and the second flow path becomes sealed.

10. A grease spraying device for a grease gun according to any one of claims 1 to 5, characterized in that the gun body is provided with a piston chamber, the piston chamber is in communication with the air pressure passage and the grease outlet pipe, and the grease outlet pipe is connected to the front end of the gun body via an extension rod.

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