Refrigerant filling gun

Abstract

The utility model relates to the technical field of filling guns, and provides a refrigerant filling gun, which comprises a filling gun body and a refrigerant gas cylinder body, a handle is fixedly connected at the bottom of the filling gun body close to the edge, a switch is movably embedded on the outer surface of the handle, and a flat plate is fixedly connected at the bottom end of the handle. According to the utility model, the refrigerant gas cylinder body is integrally aligned with the gas inlet of the filling gun body to be inserted, at the moment, the gas transmission head is integrally inserted into the gas inlet of the handle, then the knob positioned on one side of the flat plate is manually rotated, the knob starts to drive the double-thread screw rod to rotate forwards, and when the double-thread screw rod rotates forwards, the gas transmission head is driven to rotate; the two arc-shaped clamping plates gradually start to move towards the center of the bottom of the flat plate along the double-thread lead screw, so that the gas inlet of the filling gun and the gas conveying opening of the refrigerant gas cylinder can be better and firmly connected, loose connection between the gas inlet of the filling gun and the gas conveying opening of the refrigerant gas cylinder is prevented, leakage of a refrigerant due to loose connection is avoided, and the filling effect of the refrigerant is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filling guns, in particular to a filling gun for refrigerant. Background Art

[0002] A filling gun is a firearm that uses a pre-charged gas cylinder or pump to store compressed air or other gases.

[0003] In the prior art, such as Chinese Patent No.: CN220269727U, a filling gun for refrigerant includes an outer gun head tube. An inner tube is arranged inside the outer gun head tube. A spring and a movable tube are arranged in the space between the outer gun head tube and the inner tube. The movable tube is located in front of the spring and is in extrusion fit with it. The movable tube and the outer gun head tube form a partition chamber. A plurality of balls are arranged along the circumference at the front end of the inner tube. The outer sides of the balls are limited by the movable tube, and the inner sides are exposed into the inner tube. A female joint is arranged at the front end of the outer gun head tube. The female joint serves as a limit end cover for the movable tube. An air pipe joint is arranged on one side of the female joint and is communicated with the partition chamber. The female joint, the inner tube are connected with the male joint of the refrigeration pipeline. The balls are connected with the male joint in a clamping manner. An inclined surface platform is arranged on the inner side near the front end of the movable tube and is in extrusion fit with the balls. For this filling gun for refrigerant, the gun head can be quickly and automatically locked when docked. The filling gun is firmly connected. When manually disconnecting the gun, the filling will be automatically disconnected first. The operation is safe and reliable, and it has high practical value and popularization value.

[0004] Although the above solution has the above advantages, the disadvantage of the above solution is that when the device is in use, the structure is cumbersome, greatly increasing the cost of the device. It cannot better firmly connect the air inlet of the filling gun with the gas outlet of the refrigerant cylinder, easily causing loose connection between the two, resulting in refrigerant leakage, affecting the refrigerant filling effect. And when in use, when the gas inside the refrigerant cylinder leaks from the gas outlet, it cannot block the remaining gas inside the refrigerant cylinder, resulting in a large amount of gas leakage, causing air pollution and affecting the safety of the refrigerant cylinder. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art that when in use, the structure is cumbersome, greatly increasing the cost of the device. It cannot better firmly connect the air inlet of the filling gun with the gas outlet of the refrigerant cylinder, easily causing loose connection between the two, resulting in refrigerant leakage, affecting the refrigerant filling effect. And when in use, when the gas inside the refrigerant cylinder leaks from the gas outlet, it cannot block the remaining gas inside the refrigerant cylinder, resulting in a large amount of gas leakage, causing air pollution and affecting the safety of the refrigerant cylinder.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A refrigerant filling gun: comprising a filling gun body and a refrigerant gas cylinder body, a handle is fixedly connected to the bottom of the filling gun body near the edge, a switch is movably embedded on the outer surface of the handle, a flat plate is fixedly connected to the bottom end of the handle, the flat plate is a square plate, grooves are opened on both sides near the edge of the bottom of the flat plate, a double-threaded screw rod is movably connected to both sides of the inner wall of one of the grooves, a knob is fixedly connected to one end of the double-threaded screw rod, cylinders are fixedly connected to both sides of the inner wall of the other groove, and two arc-shaped clamping plates are threadedly connected to the outer surface of the double-threaded screw rod.

[0007] As a preferred embodiment, a plurality of sealing gaskets are fixedly connected to the inner walls of the two arc-shaped clamping plates.

[0008] The technical effect of adopting the above further solution is: By continuously rotating the knob, a plurality of sealing gaskets located on the inner walls of the two arc-shaped clamping plates gradually begin to fit on the outer surface of the round block, and the round block is firmly clamped between the two knobs as a whole, and the refrigerant gas cylinder body as a whole is sealed through a plurality of sealing gaskets.

[0009] As a preferred embodiment, a round block is fixedly connected to the center of the top of the refrigerant gas cylinder body, and an air delivery head is fixedly connected to the center of the top of the round block.

[0010] The technical effect of adopting the above further solution is: The whole air delivery head is inserted into the air inlet in the handle.

[0011] As a preferred embodiment, a round plate is fixedly connected to the inner wall of the refrigerant gas cylinder body.

[0012] The technical effect of adopting the above further solution is: The gas in the refrigerant gas cylinder body can flow smoothly through the notch on the surface of the round plate.

[0013] As a preferred embodiment, a fixing plate is fixedly connected to the inner wall of the refrigerant gas cylinder body, and a motor is fixedly installed at the center of the top of the fixing plate.

[0014] The technical effect of adopting the above further solution is: The motor is conveniently installed through the fixing plate, improving the space utilization rate of the device.

[0015] As a preferred embodiment, a rotating plate is fixedly connected to the output end of the motor, and the top of the rotating plate is slidably connected to the bottom of the fixing plate.

[0016] The technical effect of adopting the above further solution is: The rotating plate moves to the hole position of the round plate, and then the motor is turned off, thereby blocking the remaining gas in the refrigerant gas cylinder body.

[0017] As a preferred embodiment, the inner parts of the two arc-shaped clamping plates are movably sleeved on the outer surface of the cylinder.

[0018] The technical effect of adopting the above further solution is that: the cylinder is used to limit its position to prevent it from idling during movement.

[0019] As a preferred embodiment, one side of the outer surface of the filling gun body is fixedly connected with an injection head, and the switch is electrically connected to the filling gun body.

[0020] The technical effect of adopting the above further solution is that: it is convenient to control the start and stop of the filling gun body through the switch, which is convenient for operation.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0022] 1. In the present utility model, by inserting the whole refrigerant gas cylinder body into the air inlet of the filling gun body, at this time, the whole gas transmission head is inserted into the air inlet in the handle, and then the knob located on one side of the flat plate is manually rotated. The knob starts to drive the double-threaded lead screw to rotate forward. As the double-threaded lead screw rotates forward, the two arc-shaped clamping plates gradually move along the double-threaded lead screw towards the center of the bottom of the flat plate. When the two arc-shaped clamping plates start to move, the cylinder limits its position to prevent it from idling during movement. By continuously rotating the knob, the multiple sealing gaskets on the inner walls of the two arc-shaped clamping plates gradually fit on the outer surface of the round block, and the whole round block is firmly clamped between the two knobs, and the whole refrigerant gas cylinder body is sealed through the multiple sealing gaskets, so as to better firmly connect the air inlet of the filling gun with the gas transmission port of the refrigerant gas cylinder, prevent the connection between the two from being loose, avoid the leakage of refrigerant due to loose connection, and improve the refrigerant filling effect.

[0023] 2. In the present utility model, by aiming at the item that needs to be filled with refrigerant and inserting the injection head into its air inlet, then holding the handle and pressing the switch to inject the refrigerant in the refrigerant gas cylinder body into the item that needs to be refrigerated. When the refrigerant gas cylinder body accidentally leaks, the staff uses the controller to start the motor. The output end of the motor starts to drive the rotating plate to rotate forward and moves the rotating plate to the hole position of the round plate, and then the motor is turned off to block the remaining gas in the refrigerant gas cylinder body, preventing the remaining gas in the refrigerant gas cylinder body from continuing to spread. Thus, when the gas inside the refrigerant bottle leaks from the gas transmission port, the remaining gas inside the refrigerant bottle can be blocked to prevent a large amount of gas from leaking, reduce air pollution, and improve the safety of the refrigerant bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of a refrigerant filling gun provided by the present utility model;

[0025] Figure 2 Side view structural schematic diagram of a refrigerant charging gun provided by the present utility model;

[0026] Figure 3 Internal structural schematic diagram of a refrigerant charging gun provided by the present utility model;

[0027] Figure 4 For a refrigerant charging gun provided by the present utility model Figure 3 Enlarged structural schematic diagram at position A.

[0028] Legend description:

[0029] 1. Charging gun body; 101. Injection head; 102. Handle; 103. Flat plate; 104. Switch; 105. Groove; 106. Double-threaded lead screw; 107. Knob; 108. Cylinder; 109. Arc-shaped clamping plate; 110. Sealing gasket; 2. Refrigerant cylinder body; 201. Round block; 202. Gas delivery head; 204. Fixed plate; 205. Motor; 206. Round plate; 207. Rotating plate. Specific implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Example 1, please refer to Figures 1-4, the present utility model provides a technical solution: a refrigerant filling gun, including a filling gun body 1 and a refrigerant gas cylinder body 2. A handle 102 is fixedly connected to the bottom of the filling gun body 1 near the edge. A switch 104 is movably embedded on the outer surface of the handle 102. The bottom end of the handle 102 is fixedly connected to a flat plate 103. The flat plate 103 is a square plate. Two grooves 105 are respectively opened on both sides near the edge of the bottom of the flat plate 103. A double-threaded screw rod 106 is movably connected to both sides of the inner wall of one of the grooves 105. One end of the double-threaded screw rod 106 is fixedly connected to a knob 107. Two cylinders 108 are fixedly connected to both sides of the inner wall of the other groove 105. Two arc-shaped clamping plates 109 are threadedly connected to the outer surface of the double-threaded screw rod 106. A plurality of sealing gaskets 110 are fixedly connected to the inner walls of the two arc-shaped clamping plates 109. A round block 201 is fixedly connected to the center of the top of the refrigerant gas cylinder body 2. An air delivery head 202 is fixedly connected to the center of the top of the round block 201. The two arc-shaped clamping plates 109 are movably sleeved on the outer surface of the cylinder 108. An injection head 101 is fixedly connected to one side of the outer surface of the filling gun body 1. The switch 104 is electrically connected to the filling gun body 1.

[0032] In this embodiment, by inserting the whole refrigerant gas cylinder body 2 into the air inlet of the filling gun body 1, at this time, the whole air delivery head 202 is inserted into the air inlet in the handle 102, and then the knob 107 located on one side of the flat plate 103 is manually rotated. The knob 107 starts to drive the double-threaded screw rod 106 to rotate forward. As the double-threaded screw rod 106 rotates forward, the two arc-shaped clamping plates 109 gradually move towards the center of the bottom of the flat plate 103 along the double-threaded screw rod 106. When the two arc-shaped clamping plates 109 start to move, the cylinder 108 limits it to prevent it from idling during the movement. By continuously rotating the knob 107, a plurality of sealing gaskets 110 located on the inner walls of the two arc-shaped clamping plates 109 gradually fit on the outer surface of the round block 201, and the whole round block 201 is firmly clamped between the two knobs 107, and the whole refrigerant gas cylinder body 2 is sealed by a plurality of sealing gaskets 110, so as to better firmly connect the air inlet of the filling gun with the air delivery port of the refrigerant gas cylinder, prevent the connection between the two from being loose, avoid the leakage of refrigerant due to the loose connection, and improve the refrigerant filling effect.

[0033] Embodiment 2, as Figures 1-4 shown, a round plate 206 is fixedly connected to the inner wall of the refrigerant gas cylinder body 2. A fixing plate 204 is fixedly connected to the inner wall of the refrigerant gas cylinder body 2. A motor 205 is fixedly installed at the center of the top of the fixing plate 204. The output end of the motor 205 is fixedly connected to a rotating plate 207. The top of the rotating plate 207 is slidably connected to the bottom of the fixing plate 204.

[0034] In this embodiment, the article to be filled with refrigerant is targeted, and the injection head 101 is inserted into its air inlet. Then, the handle 102 is held by hand and the switch 104 is pressed to inject the refrigerant in the refrigerant cylinder body 2 into the article to be refrigerated. When the refrigerant cylinder body 2 accidentally leaks, the staff uses the controller to start the motor 205. The output end of the motor 205 starts to drive the rotating plate 207 to rotate forward and moves the rotating plate 207 to the hole position of the circular plate 206. Then, the motor 205 is turned off to block the remaining gas in the refrigerant cylinder body 2 and prevent the remaining gas in the refrigerant cylinder body 2 from continuing to diffuse. Thus, when the gas inside the refrigerant cylinder leaks from the gas delivery port, the remaining gas inside the refrigerant cylinder can be blocked to prevent a large amount of gas from leaking, reduce air pollution, and improve the safety of the refrigerant cylinder.

[0035] Working principle: During use, first, the entire refrigerant cylinder body 2 is inserted into the air inlet of the filling gun body 1. At this time, the entire gas delivery head 202 is inserted into the air inlet in the handle 102. Then, the knob 107 on one side of the flat plate 103 is manually rotated. The knob 107 starts to drive the double-threaded lead screw 106 to rotate forward. As the double-threaded lead screw 106 rotates forward, the two arc-shaped clamping plates 109 gradually move along the double-threaded lead screw 106 towards the center of the bottom of the flat plate 103. When the two arc-shaped clamping plates 109 start to move, the cylinder 108 limits their movement to prevent them from idling during movement. By continuously rotating the knob 107, the multiple sealing gaskets 110 on the inner walls of the two arc-shaped clamping plates 109 gradually fit onto the outer surface of the round block 201 and firmly clamp the entire round block 201 between the two knobs 107. Moreover, the entire refrigerant cylinder body 2 is sealed through the multiple sealing gaskets 110, thereby achieving a better firm connection between the air inlet of the filling gun and the gas delivery port of the refrigerant cylinder, preventing loose connection between the two, avoiding refrigerant leakage due to loose connection, and improving the refrigerant filling effect. Subsequently, the staff targets the article to be filled with refrigerant, inserts the injection head 101 into its air inlet, then holds the handle 102 and presses the switch 104 to inject the refrigerant in the refrigerant cylinder body 2 into the article to be refrigerated. When the refrigerant cylinder body 2 accidentally leaks, the staff uses the controller to start the motor 205. The output end of the motor 205 starts to drive the rotating plate 207 to rotate forward and moves the rotating plate 207 to the hole position of the circular plate 206. Then, the motor 205 is turned off to block the remaining gas in the refrigerant cylinder body 2 and prevent the remaining gas in the refrigerant cylinder body 2 from continuing to diffuse. Thus, when the gas inside the refrigerant cylinder leaks from the gas delivery port, the remaining gas inside the refrigerant cylinder can be blocked to prevent a large amount of gas from leaking, reduce air pollution, and improve the safety of the refrigerant cylinder.

[0036] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A refrigerant charging gun, characterized in that: The invention comprises a filling gun body (1) and a refrigerant cylinder body (2), wherein a handle (102) is fixedly connected to the bottom of the filling gun body (1) near the edge, a switch (104) is movably embedded in the outer surface of the handle (102), a plate (103) is fixedly connected to the bottom end of the handle (102), the plate (103) is a square plate, grooves (105) are provided on both sides of the bottom of the plate (103) near the edge, a double-threaded screw rod (106) is movably connected to the inner wall of one of the grooves (105), one end of the double-threaded screw rod (106) is fixedly connected to a knob (107), and a cylinder (108) is fixedly connected to the inner wall of the other groove (105), and the outer surface of the double-threaded screw rod (106) is threadedly connected to two arc-shaped clamping plates (109).

2. A refrigerant charging gun according to claim 1, characterized in that: The inner walls of the two arc-shaped clamping plates (109) are both fixedly connected with a plurality of sealing pads (110).

3. A refrigerant charging gun according to claim 1, characterized in that: A round block (201) is fixedly connected to the center of the top of the refrigerant cylinder body (2), and a gas delivery head (202) is fixedly connected to the center of the top of the round block (201).

4. A refrigerant charging gun according to claim 3, characterized in that: A circular plate (206) is fixedly connected to the inner wall of the refrigerant cylinder body (2).

5. A refrigerant charging gun according to claim 3, characterized in that: A fixing plate (204) is fixedly connected to the inner wall of the refrigerant cylinder body (2), and a motor (205) is fixedly mounted at the top center of the fixing plate (204).

6. A refrigerant charging gun according to claim 5, characterized in that: The output end of the motor (205) is fixedly connected to a rotating plate (207), and the top of the rotating plate (207) is slidably connected to the bottom of the fixed plate (204).

7. A refrigerant charging gun according to claim 1, characterized in that: The inner parts of the two arc-shaped clamping plates (109) are movably sleeved on the outer surface of the cylinder (108).

8. A refrigerant charging gun according to claim 6, characterized in that: An injection head (101) is fixedly connected to one side of the outer surface of the filling gun body (1), and the switch (104) is electrically connected to the filling gun body (1).

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