Refrigerant split charging and pressure regulating mechanism

Abstract

The utility model discloses a refrigerant split charging pressure regulating mechanism which comprises a pressure valve body arranged on a refrigerant conveying pipe and used for regulating and fixing pressure, a clamping connector used for quick connection is arranged between the pressure valve body and the refrigerant conveying pipe, and the clamping connector comprises a connecting pipe fixedly connected to the liquid inlet end and the liquid outlet end of the pressure valve body. And a plurality of through holes which are annularly distributed at equal intervals are formed in the surface of the connecting pipe. According to the pressure valve, the shifting piece is pushed towards the direction of the pressure valve body to the maximum degree, so that the clamping ball loses constraint, the end of the refrigerant conveying pipe is inserted into the inner cavity of the connecting pipe to the maximum degree, finally, the shifting piece can be loosened, and automatic reset operation of the shifting piece can be achieved through the reset piece. And the clamping balls are clamped in the inner cavities of the second annular grooves, then the connection operation of the pressure valve body and the refrigerant conveying pipe is completed, the connection process of the pressure valve body and the refrigerant conveying pipe is easy to operate, and use and follow-up maintenance are easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerant subpackaging equipment, and in particular relates to a refrigerant subpackaging pressure regulating mechanism. Background Art

[0002] The patent document with announcement number CN203602341U discloses a fully automatic refrigerant filling equipment, including a feed pipe, a storage tank, a delivery pipe, a pressure valve, a tank inlet, an intermittent conveyor belt, a pushing device, a tank outlet and a control cabinet. The feed pipe is connected to the storage tank, and a delivery pipe is connected to the lower end of the storage tank. A plurality of branches are branched out at the end of the delivery pipe, and a plurality of filling valves are installed on the branch outlets accordingly; the pressure valve is installed between the storage tank and the delivery pipe; the tank inlet and the tank outlet are installed at both ends of the intermittent conveyor belt and the conveyor belt passes through the lower part of the filling valve, and the pushing device is installed at the lower end of the intermittent conveyor belt at the lower part of the filling valve, and the control cabinet is connected to the conveyor belt through a line. It has the advantages of strong practicality, simple structure, and easy use and installation, and is suitable for filling machines with different production frequencies.

[0003] From this we can see that the pressure valve is an important pressure regulating mechanism for refrigerant packaging.

[0004] The existing patent document with announcement number CN215721111U discloses a pressure valve that is easy to install. The user inserts a pipe into the interior of the pressure valve body, so that the pipe pushes the arc clamping plate to move outward, and the arc clamping plate compresses the first return spring. After the pipe is inserted into the pressure valve body, the arc clamping plate clamps and fixes the pipe under the action of the elastic force of the first return spring, thereby realizing rapid installation and disassembly of the pressure valve body and facilitating the user to install the pressure valve body.

[0005] Although the above-mentioned easy-to-install pressure valve can solve the corresponding technical problems, when connecting the pipeline and the pressure valve body, it is necessary to pull the spring locating pin outward and then insert the pipeline into the interior of the pressure valve body. However, there are multiple spring locating pins on the outer surface of the disk, which makes it difficult for a single person to pull multiple spring locating pins and insert the pipeline at the same time, which makes it difficult for a single person to complete the connection operation between the pipeline and the pressure valve body, resulting in limitations in the installation process of the pressure valve. Utility Model Content

[0006] The utility model aims to provide a refrigerant sub-packaging and pressure regulating mechanism to solve the technical defect that the operation process of the existing refrigerant sub-packaging and pressure regulating mechanism is complicated and difficult.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A refrigerant subpackaging pressure regulating mechanism comprises a pressure valve body arranged on a refrigerant delivery pipe and used for pressure regulation and constant pressure, wherein a clamping joint for quick connection is arranged between the pressure valve body and the refrigerant delivery pipe.

[0009] The snap-on joint includes a connecting pipe fixedly connected to the liquid inlet and outlet ends of the pressure valve body, a surface of the connecting pipe is provided with a plurality of through holes equidistantly distributed in an annular shape, a card bead is movably placed in the inner cavity of the through hole, a second annular groove adapted to the card bead is provided on the surface of the refrigerant delivery pipe close to one end of the connecting pipe, a toggle member for synchronously unlocking or positioning the plurality of card beads is movably provided on the surface of the connecting pipe, a reset member for automatically resetting the toggle member is provided between the toggle member and the connecting pipe, and a sealing member is provided between the connecting pipe and the refrigerant delivery pipe.

[0010] As a preferred solution of the utility model, the opening diameter of the through hole on the side close to the refrigerant delivery pipe is smaller than the diameter of the bead.

[0011] As a preferred solution of the utility model, the toggle member includes a sleeve movably sleeved on the surface of the connecting tube, the inner wall surface of the sleeve contacts the surface of the card bead, and the inner wall surface of the sleeve is provided with a first annular groove adapted to the card bead.

[0012] As a further preferred solution of the utility model, two groups of convex rings are integrally formed on the outer surface of the sleeve along its axial direction, and each group of convex rings is provided with at least three convex rings at equal intervals.

[0013] As a further preferred embodiment of the present invention, the reset member includes a spring sleeved on the outer surface of the connecting tube, a cavity for accommodating the spring is formed between the connecting tube and the sleeve, and two ends of the spring are fixedly connected to the connecting tube and the sleeve respectively.

[0014] As a further solution of the utility model, a boss is provided on the outer surface of the connecting pipe, and the distance between the boss and one side of the inner cavity of the cavity is matched with the movable distance of the sleeve.

[0015] As a preferred solution of the utility model, the sealing member includes a concave platform arranged on the inner wall surface of the connecting pipe, and a sealing ring gasket is arranged between the concave platform and the refrigerant delivery pipe.

[0016] Compared with the prior art, the refrigerant subpackaging and pressure regulating mechanism of the utility model has the following beneficial effects:

[0017] 1. The mechanism pushes the toggle member toward the pressure valve body to the maximum extent, so that the bead loses its restraint. At this time, the end of the refrigerant delivery pipe can be inserted into the inner cavity of the connecting pipe to the maximum extent, and finally the toggle member can be loosened, and the toggle member can be automatically reset by the reset member, and the bead is connected to the inner cavity of the second annular groove, thereby completing the connection operation of the pressure valve body and the refrigerant delivery pipe. During the connection process of the pressure valve body and the refrigerant delivery pipe, only one person is required to operate, so it is easy to use and maintain in the future;

[0018] 2. The mechanism improves the sealing performance of the connection between the connecting pipe and the refrigerant delivery pipe through a seal, effectively avoiding leakage at the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only examples of the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a clamping joint and a refrigerant delivery pipe in an embodiment of the utility model.

[0023] Reference numerals:

[0024] 1. Pressure valve body;

[0025] 2. snap-fit ​​joint; 21. connecting pipe; 211. boss; 22. through hole; 23. card bead; 24. toggle member; 241. sleeve; 242. first annular groove; 243. convex ring; 25. reset member; 251. spring; 252. cavity; 26. sealing member; 261. concave platform; 262. sealing ring gasket;

[0026] 3. Refrigerant delivery pipe; 31. Second annular groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] See attached Figure 1-Figure 2 As shown, an embodiment of the utility model is a refrigerant dispensing and pressure regulating mechanism, comprising a pressure valve body 1 arranged on a refrigerant delivery pipe 3 and used for pressure regulation and constant pressure, and a snap-on joint 2 for quick connection is provided between the pressure valve body 1 and the refrigerant delivery pipe 3.

[0031] See attached Figure 3 As shown, the snap-on joint 2 includes a connecting pipe 21 fixedly connected to the liquid inlet and outlet ends of the pressure valve body 1, a surface of the connecting pipe 21 is provided with a plurality of through holes 22 distributed in an annular shape and at equal intervals, a card bead 23 is movably placed in the inner cavity of the through hole 22, a second annular groove 31 adapted to the card bead 23 is provided on the surface of the refrigerant delivery pipe 3 near one end of the connecting pipe 21, a toggle member 24 for synchronously unlocking or positioning the plurality of card beads 23 is movably provided on the surface of the connecting pipe 21, a reset member 25 for automatically resetting the toggle member 24 is provided between the toggle member 24 and the connecting pipe 21, and a sealing member 26 for improving the sealing is provided between the connecting pipe 21 and the refrigerant delivery pipe 3.

[0032] In order to limit the bead 23 and effectively prevent the bead 23 from falling directly into the inner cavity of the connecting tube 21 when the refrigerant delivery tube 3 is moved out of the inner cavity of the connecting tube 21, in the embodiment of the utility model, the opening diameter of the through hole 22 close to the side of the refrigerant delivery tube 3 is smaller than the diameter of the bead 23.

[0033] In order to enable several beads 23 to be synchronously moved out of or inserted into the inner cavity of the second annular groove 31, in the present embodiment: the toggle member 24 includes a sleeve 241 movably sleeved on the surface of the connecting pipe 21, the inner wall surface of the sleeve 241 contacts the surface of the beads 23, and the inner wall surface of the sleeve 241 is provided with a first annular groove 242 adapted to the beads 23. When the sleeve 241 moves toward the direction of the pressure valve body 1 so that the first annular groove 242 is aligned with the through hole 22, the beads 23 can be freed from constraint, so that the beads 23 can be moved out of the inner cavity of the second annular groove 31 and moved to the inner cavity of the first annular groove 242, thereby realizing the unlocking operation of the refrigerant delivery pipe 3; on the contrary, when the sleeve 241 loses its constraint, the beads 23 are forced to be inserted into the inner cavity of the second annular groove 31, thereby realizing the locking operation of the refrigerant delivery pipe 3.

[0034] In order to increase the friction between the palm and the outer surface of the sleeve 241 and play an anti-slip role, in this embodiment: the outer surface of the sleeve 241 is integrally formed with two groups of convex rings 243 along its axial direction, and each group of convex rings 243 is equidistantly provided with at least three.

[0035] In order to achieve the automatic resetting effect of the sleeve 241, in the embodiment of the utility model, the resetting member 25 includes a spring 251 sleeved on the outer surface of the connecting tube 21, and a cavity 252 for accommodating the spring 251 is formed between the connecting tube 21 and the sleeve 241, and the two ends of the spring 251 are respectively fixedly connected to the connecting tube 21 and the sleeve 241.

[0036] In order to effectively prevent the sleeve 241 from moving excessively so that the first annular groove 242 can be quickly aligned with the through hole 22, in an embodiment of the utility model, a boss 211 is provided on the outer surface of the connecting tube 21, and the distance between the boss 211 and one side of the inner cavity of the cavity 252 is adapted to the movable distance of the sleeve 241.

[0037] In order to improve the sealing performance of the connection between the connecting pipe 21 and the refrigerant delivery pipe 3 , in the embodiment of the utility model, the sealing member 26 includes a recessed platform 261 provided on the inner wall surface of the connecting pipe 21 , and a sealing ring gasket 262 is provided between the recessed platform 261 and the refrigerant delivery pipe 3 .

[0038] When the embodiment of the utility model is used, the sleeve 241 is pushed toward the direction of the pressure valve body 1 through the convex ring 243, so that the sleeve 241 drives the first annular groove 242 to move, and the spring 251 is forced to shrink until the sleeve 241 moves to the maximum limit. At this time, the first annular groove 242 is aligned with the through hole 22, and the card bead 23 loses its constraint. Then, one end of the second annular groove 31 is inserted into the inner cavity of the connecting pipe 21, so that the end of the second annular groove 31 applies pressure to the card bead 23, and the card bead 23 is forced to move in the inner cavity of the through hole 22 and penetrate to the first annular groove 242. The inner cavity of the second annular groove 31 is formed until the end of the second annular groove 31 abuts against one side of the sealing ring gasket 262. At this time, the second annular groove 31 is aligned with the through hole 22. Finally, the sleeve 241 is loosened, and the sleeve 241 can be restored to its original state through the elastic force of the spring 251. The first annular groove 242 and the through hole 22 are staggered, and the card bead 23 is forced to move in the inner cavity of the through hole 22 and penetrate into the inner cavity of the second annular groove 31, so that the second annular groove 31 is fixedly inserted in the inner cavity of the connecting pipe 21, thereby completing the connection operation of the pressure valve body 1 and the refrigerant delivery pipe 3.

[0039] The embodiment of the utility model pushes the toggle member 24 toward the direction of the pressure valve body 1 to the maximum extent, so that the bead 23 loses its constraint. At this time, the end of the refrigerant delivery pipe 3 can be inserted into the inner cavity of the connecting pipe 21 to the maximum extent, and finally the toggle member 24 can be loosened, and the automatic resetting operation of the toggle member 24 can be realized by the reset member 25, and the bead 23 is clamped in the inner cavity of the second annular groove 31, thereby completing the connection operation of the pressure valve body 1 and the refrigerant delivery pipe 3. During the connection process of the pressure valve body 1 and the refrigerant delivery pipe 3, only one person is required to operate, so that it is easy to use and maintain in the future.

[0040] The embodiment of the utility model can improve the sealing performance of the connection between the connecting pipe 21 and the refrigerant delivery pipe 3 through the sealing member 26, and effectively avoid leakage at the connection.

[0041] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigerant subpackaging pressure regulating mechanism, characterized in that: It comprises a pressure valve body (1) which is arranged on a refrigerant delivery pipe (3) and is used for regulating and maintaining pressure, wherein a snap-in joint (2) for quick connection is arranged between the pressure valve body (1) and the refrigerant delivery pipe (3), wherein: The clamping joint (2) comprises a connecting pipe (21) fixedly connected to a liquid inlet end and a liquid outlet end of a pressure valve body (1); a plurality of through holes (22) equidistantly distributed in an annular shape are provided on the surface of the connecting pipe (21); a clamping bead (23) is movably placed in the inner cavity of the through hole (22); a second annular groove (31) adapted to the clamping bead (23) is provided on the surface of the refrigerant delivery pipe (3) near one end of the connecting pipe (21); a toggle member (24) for synchronously unlocking or positioning the plurality of clamping beads (23) is movably provided on the surface of the connecting pipe (21); a reset member (25) for automatically resetting the toggle member (24) is provided between the toggle member (24) and the connecting pipe (21); and a sealing member (26) is provided between the connecting pipe (21) and the refrigerant delivery pipe (3).

2. A refrigerant subpackaging and pressure regulating mechanism according to claim 1, characterized in that: The opening diameter of the through hole (22) on the side close to the refrigerant delivery pipe (3) is smaller than the diameter of the bead (23).

3. A refrigerant subpackaging and pressure regulating mechanism according to claim 1, characterized in that: The toggle member (24) comprises a sleeve (241) movably sleeved on the surface of the connecting tube (21), the inner wall surface of the sleeve (241) contacts the surface of the clamping bead (23), and the inner wall surface of the sleeve (241) is provided with a first annular groove (242) adapted to the clamping bead (23).

4. A refrigerant subpackaging and pressure regulating mechanism according to claim 3, characterized in that: Two groups of convex rings (243) are integrally formed on the outer surface of the sleeve (241) along its axial direction, and at least three convex rings (243) are equidistantly arranged in each group.

5. A refrigerant subpackaging and pressure regulating mechanism according to claim 3, characterized in that: The reset member (25) comprises a spring (251) sleeved on the outer surface of the connecting tube (21), a cavity (252) for accommodating the spring (251) is formed between the connecting tube (21) and the sleeve (241), and two ends of the spring (251) are respectively fixedly connected to the connecting tube (21) and the sleeve (241).

6. A refrigerant subpackaging and pressure regulating mechanism according to claim 5, characterized in that: The outer surface of the connecting tube (21) is provided with a boss (211), and the distance between the boss (211) and one side of the inner cavity of the cavity (252) is adapted to the movable distance of the sleeve (241).

7. A refrigerant subpackaging and pressure regulating mechanism according to claim 1, characterized in that: The sealing member (26) comprises a recessed platform (261) provided on the inner wall surface of the connecting pipe (21), and a sealing ring gasket (262) is provided between the recessed platform (261) and the refrigerant delivery pipe (3).

Images