Refrigerant vacuum pressure-maintaining filling device

Abstract

The utility model discloses a refrigerant vacuum pressure maintaining filling device which comprises a refrigerant tank body, the upper portion of the refrigerant tank body is connected with a valve through a valve connecting pipe, the right end of the valve connecting pipe is fixedly connected with a pressure maintaining mechanism, the pressure maintaining mechanism comprises a shell, and the shell is communicated and connected with the valve connecting pipe through an installation connecting pipe on the left side. The right side of the installation connecting pipe is connected with an n-shaped hose through threads, the lower end of the n-shaped hose is connected with a filling head, the interior of the shell is connected with a movable plate in a sliding mode, the left side of the movable plate is fixedly connected with a pressing head, and the right side of the pressing head is fixedly connected with a spring. The spring drives the movable plate and the pressing head to move leftwards, the n-shaped hose is pressed, automatic pressure maintaining is formed, refrigerant leakage is prevented, the outer side of the refrigerant tank body is sleeved with the limiting barrel, and the effect of protecting the refrigerant tank body is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging devices, and in particular relates to a refrigerant vacuum pressure-maintaining charging device. Background Art

[0002] Publication number CN219506300U discloses an automatic vacuum pressure-maintaining charging device for a refrigerant filling production line, comprising a refrigerant tank body, a limit gear being arranged on the side of the refrigerant tank body, a pressure gauge being arranged above the limit gear on the side of the refrigerant tank body, a valve connecting pipe being arranged on the top of the refrigerant tank body, a charging connecting pipe being arranged on the side of the valve connecting pipe, one end of the charging connecting pipe being connected to the valve connecting pipe by welding, a vacuum pressure-maintaining disk being arranged on the other end of the charging connecting pipe, a sealing cover being arranged on the side of the vacuum pressure-maintaining disk, the sealing cover being fixed to the side of the vacuum pressure-maintaining disk by bolts, a baffle being arranged inside the vacuum pressure-maintaining disk at a position corresponding to the charging connecting pipe, a sealing ring being arranged on the side of the baffle, and a charging pipe being arranged on the side of the sealing cover at a position corresponding to the charging connecting pipe.

[0003] Although the above solution can make the pressure-maintaining prompt block shake inside the sealing cover through the shaking baffle, thereby prompting that the refrigerant tank is in a leakage state, it cannot actively provide leakage protection. Utility Model Content

[0004] The utility model aims to provide a refrigerant vacuum pressure-maintaining charging device to solve the technical defect that the existing refrigerant filling process cannot actively perform anti-leakage protection.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a refrigerant vacuum pressure-maintaining filling device, comprising a refrigerant tank body, the upper part of the refrigerant tank body is connected to a valve through a valve connecting pipe, the right end of the valve connecting pipe is fixedly connected to a pressure-maintaining mechanism, the pressure-maintaining mechanism comprises a shell, the shell is connected and connected to the valve connecting pipe through the installation connecting pipe on the left, the right side of the installation connecting pipe is connected to an η-shaped hose through a threaded connection, the lower end of the η-shaped hose is connected to a filling head, the interior of the shell is slidably connected to a movable plate, the left side of the movable plate is fixedly connected to a pressure head, the right side of the pressure head is fixedly connected to a spring, and the upper part of the pressure head is fixedly connected to a handle.

[0006] As a preferred solution of the utility model, a strip groove for making way for the handle is provided on the upper part of the shell.

[0007] As a preferred solution of the utility model, an opening is provided on the right side of the shell, and an inspection door is connected to the right side of the shell by bolts.

[0008] As a preferred solution of the present utility model, a through hole for the n-shaped hose to pass through is provided on the lower side of the shell, and the filling head is fixedly connected to the lower side of the shell.

[0009] As a preferred solution of the utility model, a rotary disk switch shaft is fixedly connected to the upper part of the valve, and a strip handle is fixedly connected to the rotary disk switch shaft.

[0010] As a preferred solution of the utility model, a limiting gear is fixedly connected to the outer side of the refrigerant tank.

[0011] As a preferred solution of the utility model, a limiting barrel is sleeved on the outer side of the refrigerant tank body, a limiting opening is provided on the upper part of the limiting barrel, and a non-slip bottom plate is fixedly connected to the lower part of the limiting barrel.

[0012] As a further preferred solution of the utility model, a limiting tooth groove is provided inside the limiting opening, and a pressure gauge is provided on the refrigerant tank body.

[0013] Compared with the prior art, the utility model of a refrigerant vacuum pressure-maintaining filling device has the following beneficial effects: the utility model prevents refrigerant leakage from the refrigerant tank after charging by arranging a pressure-maintaining mechanism; after the charging is completed, the spring can drive the movable plate and the pressure head to move to the left, so that the η-shaped hose is compressed to form automatic pressure maintenance to prevent refrigerant leakage; the outer side of the refrigerant tank is covered with a limit barrel to protect the refrigerant tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is a schematic structural diagram of the refrigerant tank body in the embodiment of the utility model.

[0017] Figure 3 It is a schematic structural diagram of the limiting barrel in the embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the pressure-maintaining mechanism in an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1. Limit barrel; 2. Anti-slip bottom plate; 3. Limit opening; 4. Refrigerant tank; 5. Pressure maintaining mechanism; 51. Shell; 52. Strip groove; 53. Handle; 54. Inspection door; 55. Movable plate; 56. Pressure head; 57. η-shaped hose; 58. Filling head; 59. Spring; 510. Installation connecting pipe; 6. Valve; 7. Rotary switch shaft; 8. Valve connecting pipe; 9. Limit gear; 10. Pressure gauge; 11. Limit tooth groove. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] See attached Figure 1-4 As shown, a refrigerant vacuum pressure-maintaining charging device according to an embodiment of the utility model comprises a refrigerant tank body 4, the upper part of the refrigerant tank body 4 is connected to a valve 6 via a valve connecting pipe 8, the right end of the valve connecting pipe 8 is fixedly connected to a pressure-maintaining mechanism 5, the pressure-maintaining mechanism 5 comprises a shell 51, the shell 51 is communicated and connected to the valve connecting pipe 8 via an installation connecting pipe 510 on the left, the right side of the installation connecting pipe 510 is threadedly connected to an η-shaped hose 57, the lower end of the η-shaped hose 57 is connected to a charging head 58, the interior of the shell 51 is slidably connected to a movable plate 55, the left side of the movable plate 55 is fixedly connected to a pressure head 56, the right side of the pressure head 56 is fixedly connected to a spring 59, and the upper part of the pressure head 56 is fixedly connected to a handle 53.

[0025] See attached Figure 4As shown, a strip groove 52 is provided on the upper portion of the housing 51 for making way for the handle 53 to prevent the connection portion between the handle 53 and the movable plate 55 from moving.

[0026] An opening is provided on the right side of the shell 51 , and an inspection door 54 is connected to the right side of the shell 51 by bolts, so that the parts inside the shell 51 can be inspected after disassembly.

[0027] The lower side of the shell 51 is provided with a through hole for the n-shaped hose 57 to pass through, and a filling head 58 is fixedly connected to the lower side of the shell 51, and the filling head 58 is used to fill the refrigerator with other electrical appliances.

[0028] A rotary switch shaft 7 is fixedly connected to the upper part of the valve 6, and a bar handle is fixedly connected to the rotary switch shaft 7. Rotating the bar handle can drive the rotary switch shaft 7 and the valve 6 to rotate.

[0029] The outer side of the refrigerant tank body 4 is fixedly connected with a limiting gear 9, which can prevent the refrigerant tank body 4 from rotating after being connected with the limiting barrel 1.

[0030] The outer side of the refrigerant tank body 4 is covered with a limiting barrel 1, the upper part of the limiting barrel 1 is provided with a limiting opening 3, and the lower part of the limiting barrel 1 is fixedly connected with an anti-skid bottom plate 2 to play an anti-collision and anti-skid role.

[0031] A limiting tooth groove 11 is provided inside the limiting opening 3, and a pressure gauge 10 is provided on the refrigerant tank body 4 to display the pressure.

[0032] In the embodiment of the utility model, refrigerant is provided inside the refrigerant tank body 4. In order to prevent the refrigerant from leaking out of the refrigerant tank body 4 after charging, a pressure maintaining mechanism 5 is provided. During the charging process, the valve 6 needs to be opened first, and the handle 53 is pulled to the right. At this time, the movable plate 55 moves to the right without hindering the charging. When the charging is completed, the spring 59 can drive the movable plate 55 and the pressure head 56 to move to the left, so that the η-shaped hose 57 is compressed to form automatic pressure maintenance to prevent refrigerant leakage.

[0033] 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 vacuum pressure-maintaining charging device, characterized in that: The invention comprises a refrigerant tank body (4), the upper part of which is connected to a valve (6) via a valve connecting pipe (8), the right end of which is fixedly connected to a pressure maintaining mechanism (5), the pressure maintaining mechanism (5) comprising a shell (51), the shell (51) being connected to and communicated with the valve connecting pipe (8) via a mounting connecting pipe (510) on the left side, the right side of which is threadedly connected to an n-shaped hose (57), the lower end of which is connected to a filling head (58), the interior of the shell (51) being slidably connected to a movable plate (55), the left side of which is fixedly connected to a pressure head (56), the right side of which is fixedly connected to a spring (59), and the upper part of which is fixedly connected to a handle (53).

2. A refrigerant vacuum pressure-maintaining charging device according to claim 1, characterized in that: The upper portion of the housing (51) is provided with a strip-shaped groove (52) for making way for the handle (53).

3. A refrigerant vacuum pressure-maintaining charging device according to claim 1, characterized in that: An opening is provided on the right side of the housing (51), and an inspection door (54) is connected to the right side of the housing (51) via bolts.

4. A refrigerant vacuum pressure-maintaining charging device according to claim 1, characterized in that: The lower side of the housing (51) is provided with a through hole for the n-shaped hose (57) to pass through, and the filling head (58) is fixedly connected to the lower side of the housing (51).

5. A refrigerant vacuum pressure-maintaining charging device according to claim 1, characterized in that: A rotary disk switch shaft (7) is fixedly connected to the upper part of the valve (6), and a strip handle is fixedly connected to the rotary disk switch shaft (7).

6. A refrigerant vacuum pressure-maintaining charging device according to claim 1, characterized in that: The outer side of the refrigerant tank body (4) is fixedly connected with a limiting gear (9).

7. A refrigerant vacuum pressure-maintaining charging device according to claim 1, characterized in that: The outer side of the refrigerant tank body (4) is covered with a limiting barrel (1), the upper part of the limiting barrel (1) is provided with a limiting opening (3), and the lower part of the limiting barrel (1) is fixedly connected with an anti-skid bottom plate (2).

8. A refrigerant vacuum pressure-maintaining charging device according to claim 6, characterized in that: A limiting tooth groove (11) is provided inside the limiting opening (3), and a pressure gauge (10) is provided on the refrigerant tank body (4).

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