Low-pressure valve airtightness detection tool

Abstract

The utility model discloses a low-pressure valve air tightness detection tool, which relates to the field of low-pressure valve detection and comprises a base, the top of the base is fixedly connected with a side plate, one side of the side plate is fixedly connected with a guide rod, the outer wall of the side plate is movably connected with a turn button, the outer wall of the turn button is fixedly connected with a bidirectional threaded rod, and the bidirectional threaded rod is fixedly connected with the guide rod. A bidirectional threaded rod is arranged on the base, a threaded block is movably connected to the outer wall of the bidirectional threaded rod, a bearing plate is fixedly connected to the outer wall of the threaded block, and a limiting plate is fixedly connected to the outer wall of the bearing plate. Thus, the limiting plates on the two sides clamp the air conditioner low-pressure valve, the effect of clamping and limiting the low-pressure valves of different models and sizes is achieved, the low-pressure valves are prevented from moving during detection, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-pressure valve detection, in particular to a low-pressure valve air tightness detection tool. Background Art

[0002] A low-pressure valve is a valve with a working pressure equal to or less than 1.57MPa. Air conditioners are often installed with low-pressure valves when in use. When testing the air tightness of the low-pressure valve of the air conditioner, high-pressure nitrogen or air is generally introduced into the front end of the low-pressure valve and then closed, and the rear end of the low-pressure valve is connected to atmospheric pressure. The low-pressure valve is closed at this time, and the pressure gauge at the front end of the low-pressure valve is observed to see whether it drops within 5 to 10 minutes to determine whether the valve core and the front part of the valve body are leaking; then, high-pressure nitrogen or air is introduced into the rear end of the low-pressure valve and then closed, and the front end of the low-pressure valve is connected to atmospheric pressure. The test is repeated to determine whether there is a leak at the rear of the valve body. The current low-pressure valve air tightness testing tooling is inconvenient to limit low-pressure valves of different models and sizes, thereby affecting the accuracy of the low-pressure valve air tightness testing. Therefore, a low-pressure valve air tightness testing tooling is needed.

[0003] The existing low-pressure valve air tightness detection tool is inconvenient to limit low-pressure valves of different models and sizes when in use, and it is inconvenient to install and connect the ventilation pipe. At the same time, it is inconvenient to disassemble and replace the joints of the ventilation pipe according to the model differences of the low-pressure valves. Therefore, a low-pressure valve air tightness detection tool is urgently needed. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a low-pressure valve air tightness detection tool to solve the problem that the existing low-pressure valve air tightness detection tool is inconvenient to limit low-pressure valves of different models and sizes, inconvenient to install and connect the ventilation pipe, and inconvenient to disassemble and replace the joints of the ventilation pipe according to the model differences of the low-pressure valve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-pressure valve air tightness detection tool, comprising a base, the top of the base is fixedly connected to a side plate, one side of the side plate is fixedly connected to a guide rod, the outer wall of the side plate is movably connected to a knob, the outer wall of the knob is fixedly connected to a bidirectional threaded rod, the outer wall of the bidirectional threaded rod is movably connected to a threaded block, the outer wall of the threaded block is fixedly connected to a receiving plate, and the outer wall of the receiving plate is fixedly connected to a limiting plate.

[0006] An air tightness detector is fixedly connected to the top of the base, a mounting head is fixedly connected to one side of the air tightness detector, a threaded column is installed inside the mounting head, and a ventilation hose is fixedly connected to one end of the threaded column.

[0007] One end of the ventilation hose is fixedly connected with a sleeve block, the interior of the sleeve block is movably connected with a spring block, a docking joint is installed inside the sleeve block, and a card slot is provided inside the docking joint.

[0008] Preferably, the knob forms a rotating structure through a bidirectional threaded rod and a side plate, and the bidirectional threaded rod is threadedly connected to the threaded block.

[0009] Preferably, the threaded block is of open-hole design, and the threaded block and the guide rod form a sliding structure.

[0010] Preferably, the bidirectional threaded rod is arranged in parallel with the guide rod, and the receiving plate is arranged symmetrically with respect to the central axis of the limiting plate.

[0011] Preferably, a thread groove is provided inside the mounting head, and the mounting head is threadably connected to the threaded column.

[0012] Preferably, the sleeve block is of slotted design, and the sleeve block and the spring block form a sliding structure.

[0013] Preferably, the spring block is engaged and connected with the docking head via a slot, and the slot is symmetrically arranged with respect to the center axis of the docking head.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is provided with a base, a guide rod, a knob, a bidirectional threaded rod, a threaded block and a limit plate. By placing the low-pressure valve of the air conditioner on the base and turning the knob, the bidirectional threaded rod can be rotated, which can drive the threaded block to slide along the guide rod, so that the limit plates on both sides clamp the low-pressure valve of the air conditioner, which is convenient for clamping and limiting low-pressure valves of different models and sizes, preventing the low-pressure valve from moving during detection, and improving the detection accuracy;

[0016] 2. The utility model is provided with an air tightness detector, a mounting head, a threaded column and a vent hose. By moving the vent hose, the threaded column is docked to one end of the inner wall of the mounting head. By rotating the threaded column, the threaded column can be inserted into the mounting head for installation, thereby facilitating the installation and connection of the vent hose and the air tightness detector.

[0017] 3. The utility model provides a sleeve block, a spring block, a docking joint and a slot. By pulling the docking joint outward, the slot can squeeze the spring block, drive the spring block into the sleeve block and release the limit of the docking joint, so that the docking joint can be disassembled and a suitable docking joint can be installed, which makes it easy to disassemble and replace the docking joint according to the model difference of the low-pressure valve, thereby improving the applicability of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure disassembly of the utility model;

[0020] Figure 3 This is a three-dimensional diagram of the installation head of the utility model;

[0021] Figure 4 It is a three-dimensional sectional view of the set of blocks of the utility model.

[0022] In the figure: 1. base; 2. side panel; 3. guide rod; 4. knob; 5. bidirectional threaded rod; 6. threaded block; 7. receiving plate; 8. limit plate; 9. air tightness tester; 10. mounting head; 11. threaded column; 12. ventilation hose; 13. sleeve block; 14. spring block; 15. docking joint; 16. slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] See also Figure 1-4 A low-pressure valve air tightness detection tooling comprises a base 1, a side plate 2 is fixedly connected to the top of the base 1, a guide rod 3 is fixedly connected to one side of the side plate 2, a knob 4 is movably connected to the outer wall of the side plate 2, a bidirectional threaded rod 5 is fixedly connected to the outer wall of the knob 4, a thread block 6 is movably connected to the outer wall of the bidirectional threaded rod 5, a receiving plate 7 is fixedly connected to the outer wall of the thread block 6, a limiting plate 8 is fixedly connected to the outer wall of the receiving plate 7, the knob 4 forms a rotating structure with the side plate 2 through the bidirectional threaded rod 5, and the bidirectional threaded rod 5 is threadedly connected to the thread block 6, the thread block 6 is an open-hole design, and the thread block 6 and the guide rod 3 form a sliding structure, the bidirectional threaded rod 5 is arranged in parallel with the guide rod 3, and the receiving plate 7 is symmetrically arranged with the central axis of the limiting plate 8, which can facilitate the clamping and limiting of low-pressure valves of different models and sizes.

[0026] See also Figure 1-4 A low-pressure valve air tightness detection tooling, wherein an air tightness detector 9 is fixedly connected to the top of a base 1, a mounting head 10 is fixedly connected to one side of the air tightness detector 9, a threaded column 11 is installed inside the mounting head 10, one end of the threaded column 11 is fixedly connected to a ventilation hose 12, a threaded groove is provided inside the mounting head 10, and the mounting head 10 is threadedly connected to the threaded column 11, which can facilitate the installation and connection of the ventilation hose 12 and the air tightness detector 9.

[0027] See also Figure 1-4 A low-pressure valve air tightness detection tool, one end of a ventilation hose 12 is fixedly connected to a sleeve block 13, the interior of the sleeve block 13 is movably connected to a spring block 14, a docking joint 15 is installed inside the sleeve block 13, a card slot 16 is opened inside the docking joint 15, the sleeve block 13 is a slotted design, and the sleeve block 13 and the spring block 14 form a sliding structure, the spring block 14 is engaged and connected with the docking joint 15 through the card slot 16, and the card slot 16 is symmetrically arranged with the central axis of the docking joint 15, which can facilitate the disassembly and replacement of the docking joint 15 according to the model difference of the low-pressure valve.

[0028] Working principle: When in use, by placing the air conditioner low-pressure valve on the base 1 and turning the knob 4, the bidirectional threaded rod 5 can be rotated. Since the bidirectional threaded rod 5 is threadedly connected with the threaded block 6, the threaded block 6 can be driven to slide along the guide rod 3, so that the receiving plate 7 moves, so that the limiting plates 8 on both sides clamp the air conditioner low-pressure valve, which is convenient for clamping and limiting low-pressure valves of different models and sizes. By moving the ventilation hose 12, the threaded column 11 is docked to one end of the inner wall of the installation head 10, and the threaded column 11 is rotated, so that the threaded column 11 can be inserted into the installation head 10 for The installation facilitates the installation and connection of the ventilation hose 12 and the air tightness detector 9. By pulling the docking joint 15 outward, the slot 16 can squeeze the spring block 14, drive the spring block 14 to be received into the sleeve block 13 and release the limit of the docking joint 15, so that the docking joint 15 can be disassembled and the matching docking joint 15 can be installed, which facilitates the disassembly and replacement of the docking joint 15 according to the model difference of the low-pressure valve, thus completing the use process of the device. The contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and 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 cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low-pressure valve air tightness detection tool, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a side plate (2), one side of the side plate (2) is fixedly connected to a guide rod (3), the outer wall of the side plate (2) is movably connected to a knob (4), the outer wall of the knob (4) is fixedly connected to a bidirectional threaded rod (5), the outer wall of the bidirectional threaded rod (5) is movably connected to a threaded block (6), the outer wall of the threaded block (6) is fixedly connected to a receiving plate (7), and the outer wall of the receiving plate (7) is fixedly connected to a limiting plate (8); The top of the base (1) is fixedly connected to an air tightness detector (9), one side of the air tightness detector (9) is fixedly connected to a mounting head (10), a threaded column (11) is installed inside the mounting head (10), and one end of the threaded column (11) is fixedly connected to a ventilation hose (12); One end of the ventilation hose (12) is fixedly connected to a sleeve block (13), the interior of the sleeve block (13) is movably connected to a spring block (14), a docking joint (15) is installed inside the sleeve block (13), and a card slot (16) is provided inside the docking joint (15).

2. The low-pressure valve air tightness detection tool according to claim 1, characterized in that: The rotating knob (4) forms a rotating structure with the side plate (2) through a bidirectional threaded rod (5), and the bidirectional threaded rod (5) is threadedly connected to the threaded block (6).

3. The low-pressure valve air tightness detection tool according to claim 1, characterized in that: The threaded block (6) is of open-hole design, and the threaded block (6) and the guide rod (3) form a sliding structure.

4. The low-pressure valve air tightness detection tool according to claim 1, characterized in that: The bidirectional threaded rod (5) is arranged in parallel with the guide rod (3), and the receiving plate (7) is arranged symmetrically with respect to the central axis of the limiting plate (8).

5. The low-pressure valve air tightness detection tool according to claim 1, characterized in that: A thread groove is provided inside the mounting head (10), and the mounting head (10) is threadably connected to the threaded column (11).

6. The low-pressure valve air tightness detection tool according to claim 1, characterized in that: The sleeve block (13) is of slotted design, and the sleeve block (13) and the spring block (14) form a sliding structure.

7. The low-pressure valve air tightness detection tool according to claim 1, characterized in that: The spring block (14) is snap-connected with the docking head (15) via a snap-in groove (16), and the snap-in groove (16) is symmetrically arranged with respect to the central axis of the docking head (15).

Images