Plugging mechanism after refrigerant filling

Abstract

The plugging mechanism used after refrigerant filling comprises a filling pipe, a first sealing ring is arranged on the top side of the filling pipe, and a connecting cylinder is installed on the outer side of the filling pipe in a clamped mode. When the plugging device is used for plugging, the plugging cylinder and the connecting cylinder are clamped, the plugging block and the plugging opening are clamped at the moment, the plugging cylinder is rotated to be connected and fixed with the connecting thread, the plugging block continuously moves for plugging in the process, and the threaded rod moves on the inner side of the adjusting seat by rotating the handle; a reinforcing sleeve and a plugging block are pushed to move, so that a second sealing groove in the bottom side of the reinforcing sleeve is clamped with a second sealing ring, the sealing effect is improved, under the action of a connecting thread and a threaded rod, the clamping effect of the plugging block is improved, leakage caused by loosening after long-term use is avoided, the overall stability is improved, and the service life is prolonged; and quick disassembly and assembly are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration filling technology, specifically a refrigerant filling and sealing mechanism. Background Technology

[0002] In the field of refrigeration filling, the refrigerant charging pipe needs to be sealed after the refrigeration appliance is filled with refrigerant. The existing method of sealing the refrigerant charging pipe is to use flat-nose sealing pliers to flatten the refrigerant charging pipe and then use high-temperature gas welding to seal the opening of the charging pipe. High-temperature gas welding requires the storage of oxygen and acetylene and a special welding torch at the welding site.

[0003] Patent CN201488416U discloses a refrigerant charging and sealing device. It achieves sealing by flattening the refrigerant charging tube, blocking the end of the refrigerant charging tube with a sealing core, pressing the sealing core with a plug cap, and finally pressing the refrigerant charging tube, plug cap, and sealing core with a clamping ring. This utility model does not require open flame operation and has good sealing performance.

[0004] During the use of the above-mentioned device, tools are needed to flatten one end of the refrigerant charging pipe. This requires multiple adjustments to achieve the required level before sealing can proceed. The operation is cumbersome and time-consuming. Although the plug and sealing core can be locked together for sealing, the use of a clamping ring for tightening and reinforcement can easily reduce the fixing effect and lead to a decrease in sealing performance. Furthermore, disassembly is difficult in the later stages. Utility Model Content

[0005] The purpose of this invention is to provide a refrigerant charging and sealing mechanism to solve the technical problems of poor sealing and fixing effect, poor sealing performance, and inconvenient disassembly during the refrigerant charging process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a refrigerant charging and sealing mechanism, comprising a charging pipe, a sealing ring No. 1 provided on the top side of the charging pipe, a connecting cylinder installed on the outer side of the charging pipe by a snap-fit, a sealing cylinder connected to the outer side of the connecting cylinder by a thread, an adjusting seat movably installed on the top side of the sealing cylinder by a bearing, a threaded rod connected to the inner side of the adjusting seat by a thread, a reinforcing sleeve movably installed at the bottom end of the threaded rod by a bearing, and a sealing block fixedly installed on the bottom side of the reinforcing sleeve.

[0007] As a further embodiment of this utility model, a slot No. 1 is provided on the top side of the filling tube, a sealing ring No. 1 is fixedly installed on the inner side of the slot No. 1, and a connecting plate is fixedly installed on the outer side of the filling tube. The connecting plate has three through holes arranged equidistantly in a ring on its top side, which is beneficial for the assembly and installation of the connecting cylinder, facilitates positioning and limiting, and facilitates the connection and engagement of the connecting cylinder under the action of the slot No. 1. At the same time, the sealing performance is improved by the sealing ring No. 1.

[0008] As a further embodiment of this utility model, a connecting inner cylinder is provided on the inner side of the connecting cylinder, and an mounting plate is fixedly installed on the outer side of the connecting cylinder. Three fixing screws are arranged equidistantly in a ring on the bottom side of the mounting plate, and the positions of the fixing screws correspond one-to-one with the through holes. After the three fixing screws are engaged with the through holes, it is convenient to use nuts for connection and fixation. At the same time, the connecting inner cylinder is engaged with the filling tube, which facilitates positioning and installation, and also improves the connection stability and sealing fit.

[0009] As a preferred embodiment of this utility model, a fitting groove is provided on the bottom side of the connecting cylinder. The size and shape of the fitting groove match the filling tube, and a compression sleeve is fixedly installed on the top side of the inner side of the fitting groove. A first sealing groove is opened on the bottom side of the compression sleeve, and the size and shape of the first sealing groove matches the first sealing ring. After connecting with the fixing screw from the lower end using a nut, rotation is performed, which facilitates the mutual compression and locking of the first sealing groove and the first sealing ring, improving the connection sealing performance. Installing the connecting cylinder facilitates changing the filling port specifications of the filling tube, thereby reducing the amount of overflow and facilitating sealing, reducing the need for manual flattening.

[0010] As a preferred embodiment of this utility model, the outer side of the connecting cylinder is provided with connecting threads, the top side of the connecting cylinder has a square sealing opening, and the top side of the connecting cylinder has a second slot, on the inner side of the second slot, a second sealing ring is fixedly installed. When the sealing cylinder and the connecting cylinder are engaged, the sealing block engages with the sealing opening. Then, by rotating the sealing cylinder, it is connected and fixed with the connecting threads, facilitating installation. Simultaneously, the second slot facilitates the positioning and limiting of the reinforcing sleeve, improving the stability of the connection.

[0011] As a further embodiment of this invention, the sealing block is made of rubber, and its size and shape match the sealing opening. A handle is fixedly installed on the top side of the threaded rod, and a second sealing groove is provided on the bottom side of the reinforcing sleeve. The size and shape of the second sealing groove match the second sealing ring. During reinforcement, the handle is rotated, causing the threaded rod to move inside the adjusting seat and push the reinforcing sleeve and sealing block to move. This causes the second sealing groove on the bottom side of the reinforcing sleeve to engage with the second sealing ring, which helps to increase the sealing effect, prevent leakage, and push the sealing block to the bottom of the sealing opening to complete the sealing.

[0012] Compared with the prior art, the refrigerant charging sealing mechanism provided by this utility model has the following beneficial effects:

[0013] 1. This utility model uses the inner connecting cylinder on the inner side of the connecting tube to engage with the filling tube, which facilitates positioning and installation while improving connection stability and sealing fit. After connection, the No. 1 sealing groove and the No. 1 sealing ring engage, which helps to ensure connection sealing. Then, the nut is connected from the lower end of the fixing screw and rotated, which helps to squeeze and engage the No. 1 sealing groove and the No. 1 sealing ring, improving connection sealing. After installing the connecting tube, it is possible to change the filling port specification of the filling tube, which helps to reduce overflow and facilitates sealing, reducing the need for manual flattening process.

[0014] 2. In the process of sealing, the sealing cylinder and the connecting cylinder are engaged, and the sealing block is engaged with the sealing opening. Then, by rotating the sealing cylinder, it is connected and fixed with the connecting thread. During this process, the sealing block moves continuously to seal. By rotating the handle, the threaded rod moves inside the adjusting seat and pushes the reinforcing sleeve and the sealing block to move, so that the second sealing groove on the bottom side of the reinforcing sleeve engages with the second sealing ring, which helps to increase the sealing effect. Under the action of the connecting thread and the threaded rod, the engagement effect of the sealing block is improved, avoiding loosening and leakage after long-term use, improving the overall stability and service life, and facilitating quick disassembly and assembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the filling tube in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the connecting cylinder in an embodiment of the present utility model;

[0020] Figure 5 This is a bottom view of the sealing cylinder in an embodiment of the present invention.

[0021] Reference numerals: 1. Filling pipe; 2. No. 1 sealing ring; 3. Connecting cylinder; 4. Sealing cylinder; 5. Adjusting seat; 6. Threaded rod; 7. Reinforcing sleeve; 8. Sealing block; 101. Connecting plate; 102. Through hole; 103. No. 1 slot; 301. Connecting inner cylinder; 302. Mounting plate; 303. Fixing screw; 304. Fitting groove; 305. Extrusion sleeve; 3051. No. 1 sealing groove; 306. Connecting thread; 307. Sealing port; 308. No. 2 slot; 3081. No. 2 sealing ring; 601. Handle; 701. No. 2 sealing groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0025] See Figure 1-5 As shown in the figure, a refrigerant charging and sealing mechanism according to an embodiment of the present invention includes a charging pipe 1, a sealing ring 2 on the top side of the charging pipe 1, a connecting cylinder 3 installed on the outer side of the charging pipe 1 by a snap-fit, a sealing cylinder 4 connected to the outer side of the connecting cylinder 3 by a thread, an adjusting seat 5 movably installed on the top side of the sealing cylinder 4 by a bearing, a threaded rod 6 connected to the inner side of the adjusting seat 5 by a thread, a reinforcing sleeve 7 movably installed on the bottom end of the threaded rod 6 by a bearing, and a sealing block 8 fixedly installed on the bottom side of the reinforcing sleeve 7.

[0026] Specifically, a slot 103 is formed on the top side of the filling tube 1, and a sealing ring 2 is fixedly installed inside the slot 103. A connecting plate 101 is fixedly installed on the outside of the filling tube 1, and three through holes 102 are arranged equidistantly in a ring on the top side of the connecting plate 101. The three through holes 102 on the top side of the connecting plate 101 facilitate the positioning and limiting of the connecting cylinder 3 during assembly. Furthermore, the slot 103 facilitates the connection and engagement of the connecting cylinder 3, while the sealing ring 2 improves the sealing performance.

[0027] See Figure 2-3 As shown, a connecting inner cylinder 301 is provided on the inner side of the connecting cylinder 3, and a mounting plate 302 is fixedly installed on the outer side of the connecting cylinder 3. Three fixing screws 303 are arranged equidistantly in a ring on the bottom side of the mounting plate 302, and the positions of the fixing screws 303 correspond one-to-one with the through holes 102. By engaging the three fixing screws 303 with the through holes 102, it is convenient to use nuts for connection and fixation. At the same time, by engaging the connecting inner cylinder 301 with the filling pipe 1, it is beneficial to facilitate positioning and installation, and also improves the connection stability and sealing fit.

[0028] The bottom side of the connecting cylinder 3 is provided with a fitting groove 304, the size and shape of which match the filling tube 1. A compression sleeve 305 is fixedly installed on the top side of the inner side of the fitting groove 304. A first sealing groove 3051 is formed on the bottom side of the compression sleeve 305, the size and shape of which fits the first sealing ring 2. By connecting the nut from the lower end of the fixing screw 303 and rotating it, the first sealing groove 3051 and the first sealing ring 2 are squeezed and engaged, improving the connection seal. Installing the connecting cylinder 3 allows for changing the filling port specifications of the filling tube 1, thereby reducing overflow and facilitating sealing, reducing the need for manual flattening.

[0029] The connecting cylinder 3 has a connecting thread 306 on its outer side, a square sealing opening 307 on its top side, and a second slot 308 on its top side. A second sealing ring 3081 is fixedly installed on the inner side of the second slot 308. By engaging the sealing cylinder 4 with the connecting cylinder 3, the sealing block 8 engages with the sealing opening 307. Then, by rotating the sealing cylinder 4, it is connected and fixed with the connecting thread 306, facilitating installation. At the same time, the second slot 308 facilitates the positioning and limiting of the reinforcing sleeve 7, improving the stability of the connection.

[0030] The sealing block 8 is made of rubber, and its size and shape match the sealing opening 307. A handle 601 is fixedly installed on the top side of the threaded rod 6, and a second sealing groove 701 is opened on the bottom side of the reinforcing sleeve 7. The size and shape of the second sealing groove 701 match the second sealing ring 3081. By rotating the handle 601, the threaded rod 6 moves inside the adjusting seat 5, which pushes the reinforcing sleeve 7 and the sealing block 8 to move, so that the second sealing groove 701 on the bottom side of the reinforcing sleeve 7 engages with the second sealing ring 3081, which helps to increase the sealing effect, prevent leakage, and push the sealing block 8 to the bottom of the sealing opening 307 to complete the sealing.

[0031] In use, by engaging the inner connecting cylinder 301 on the inner side of the connecting cylinder 3 with the filling pipe 1, it is convenient for positioning and installation, and can improve the stability and sealing fit of the connection. After connection, the engagement of the first sealing groove 3051 with the first sealing ring 2 helps to ensure the connection seal. Then, after connecting the nut from the lower end of the fixing screw 303, it is rotated, so that the first sealing groove 3051 and the first sealing ring 2 are squeezed and engaged with each other, improving the connection seal. After installing the connecting cylinder 3, it is convenient to change the filling port specification of the filling pipe 1, thereby reducing the overflow and facilitating sealing, reducing the need for manual flattening.

[0032] During sealing, the sealing cylinder 4 is engaged with the connecting cylinder 3, at which point the sealing block 8 engages with the sealing opening 307. Then, by rotating the sealing cylinder 4, it is connected and fixed with the connecting thread 306. During this process, the sealing block 8 continuously moves inside the sealing opening 307 to seal. Then, by rotating the handle 601, the threaded rod 6 moves inside the adjusting seat 5, pushing the reinforcing sleeve 7 and the sealing block 8 to move, so that the second sealing groove 701 on the bottom side of the reinforcing sleeve 7 engages with the second sealing ring 3081, which helps to increase the sealing effect, prevent leakage, and push the sealing block 8 to the bottom of the sealing opening 307 to complete the sealing. Under the action of the connecting thread 306 and the threaded rod 6, the engagement effect of the sealing block 8 is improved, preventing loosening and leakage after long-term use, improving the overall stability and service life, and facilitating quick disassembly and assembly.

[0033] The above description illustrates the basic principles of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A refrigerant charging and sealing mechanism, comprising a charging pipe (1), characterized in that: The filling tube (1) has a No. 1 sealing ring (2) on its top side. A connecting tube (3) is installed on the outside of the filling tube (1) by snap-fit. A plugging tube (4) is connected to the outside of the connecting tube (3) by thread. An adjusting seat (5) is movably installed on the top side of the plugging tube (4) by bearing. A threaded rod (6) is connected to the inside of the adjusting seat (5) by thread. A reinforcing sleeve (7) is movably installed on the bottom end of the threaded rod (6) by bearing. A plugging block (8) is fixedly installed on the bottom side of the reinforcing sleeve (7).

2. The refrigerant charging and sealing mechanism according to claim 1, characterized in that: A slot (103) is provided on the top side of the filling tube (1), a sealing ring (2) is fixedly installed on the inner side of the slot (103), a connecting plate (101) is fixedly installed on the outer side of the filling tube (1), and three through holes (102) are arranged equidistantly on the top side of the connecting plate (101).

3. The refrigerant charging and sealing mechanism according to claim 2, characterized in that: The inner side of the connecting cylinder (3) is provided with a connecting inner cylinder (301), and the outer side of the connecting cylinder (3) is fixedly installed with an mounting plate (302). Three fixing screws (303) are arranged in a ring at equal intervals on the bottom side of the mounting plate (302), and the positions of the fixing screws (303) correspond one-to-one with the through holes (102).

4. The refrigerant charging and sealing mechanism according to claim 1, characterized in that: The bottom side of the connecting cylinder (3) is provided with a fitting groove (304), the size and shape of the fitting groove (304) are matched with the filling tube (1), and a compression sleeve (305) is fixedly installed on the top side of the inner side of the fitting groove (304). A first sealing groove (3051) is opened on the bottom side of the compression sleeve (305), and the size and shape of the first sealing groove (3051) are matched with the first sealing ring (2).

5. The refrigerant charging and sealing mechanism according to claim 1, characterized in that: The outer side of the connecting cylinder (3) is provided with a connecting thread (306), the top side of the connecting cylinder (3) is provided with a square sealing opening (307), the top side of the top side of the connecting cylinder (3) is provided with a second slot (308), and a second sealing ring (3081) is fixedly installed on the inner side of the second slot (308).

6. The refrigerant charging sealing mechanism according to claim 5, characterized in that: The sealing block (8) is made of rubber material, and the size and shape of the sealing block (8) are matched with the sealing opening (307). The top side of the threaded rod (6) is fixedly installed with a handle (601), and the bottom side of the reinforcing sleeve (7) is provided with a second sealing groove (701). The size and shape of the second sealing groove (701) are matched with the second sealing ring (3081).

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