Replaceable four-way valve vacuum box helium detection sealing mechanism
By designing a replaceable four-way valve vacuum chamber helium detection sealing mechanism, the problems of complex structure and unreliable sealing of the air conditioning four-way reversing valve assembly detection device are solved, realizing simple replacement and efficient sealing, and improving detection efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-03-31
AI Technical Summary
The existing air conditioning four-way reversing valve assembly testing device has a complex structure and unreliable sealing, resulting in low testing efficiency and difficulty in quickly changing models.
A replaceable four-way valve vacuum chamber helium detection sealing mechanism was designed. It uses a vacuum chamber, an inflatable sealing head, and a sealing tension spring. The mechanism can be easily changed by manually replacing the sealing sleeve, sealing ring, and sealing copper head to adapt to different pipe diameters and lengths.
It achieves reliable sealing, can absorb the tolerance of workpiece size inconsistencies, facilitates changeover, and improves inspection efficiency and sealing effect.
Smart Images
Figure CN224066291U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning four-way valve sealing detection technology, and more specifically, to a replaceable four-way valve vacuum box helium detection sealing mechanism. Background Technology
[0002] Air conditioner compressors are generally equipped with a four-way valve, which mainly acts as an intermediate station for refrigerant replacement in the cooling and heating modes of the air conditioner. Structurally, the upper end of the four-way valve is equipped with an exhaust pipe connector, and the lower end of the four-way valve is equipped with a condenser pipe connector, a return pipe connector, and a shut-off valve connector. The four pipe connectors are respectively connected to corresponding pipes for connecting to the compressor exhaust port, condenser, compressor suction port, and indoor unit.
[0003] Existing air conditioning four-way reversing valve assembly testing devices are inconvenient to change, resulting in low testing efficiency. Most air conditioning four-way reversing valve assembly testing devices use bolt assemblies to fix the connecting plate, which makes the mechanism's sealing structure complex and the sealing unreliable, thus causing the testing mechanism to be unreliable in its sealing.
[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0005] The purpose of this utility model is to provide a replaceable four-way valve vacuum chamber helium detection sealing mechanism. This replaceable four-way valve vacuum chamber helium detection sealing mechanism has a simple structure and is easy to replace.
[0006] This utility model provides a replaceable four-way valve vacuum chamber helium detection sealing mechanism, including a vacuum chamber, an inflation sealing head, and a sealing tension spring. The vacuum chamber is a hollow cuboid with four through holes on one side. The inflation sealing head is inserted into each through hole. The inflation sealing head includes a sealing copper head, a sealing ring, a sealing sleeve, and a sealing inflation rod. One end of the sealing inflation rod is inserted into the sealing sleeve and extends out from the other end of the sealing sleeve. The sealing copper head is fitted onto the end of the sealing inflation rod, and the sealing ring is fitted onto the side of the end of the sealing inflation rod, located between the sealing sleeve and the sealing copper head. An inflation port is provided on the side of the sealing inflation rod, communicating with the sealing copper head. The sealing tension spring is connected to the tail of the sealing inflation rod.
[0007] Using the above technical solution, the four-way valve test piece is placed in a vacuum chamber, and four sealing copper heads are inserted into the four ports of the four-way valve test piece. The sealing rings are pressed against the inner walls of the ports, and the vacuum chamber is sealed. When the diameter and length of the ports of the four-way valve test piece change, simply unscrew the sealing copper heads manually, remove the sealing rings and sealing sleeves, and replace them with new sealing sleeves, new sealing rings, and new sealing copper heads. The replacement of other sealing heads is done in the same way.
[0008] Furthermore, the sealing sleeve has two annular grooves on its side, and a sleeve sealing ring is fitted in the annular grooves; the sealing sleeve is inserted into the through hole, and the sleeve sealing ring is pressed against the inner wall of the through hole.
[0009] Furthermore, a connecting hole is provided at the tail of the sealing inflation rod, and hooks are connected to both ends of the sealing tension spring, one of which is hung in the connecting hole.
[0010] This utility model relates to a replaceable four-way valve vacuum chamber helium testing sealing mechanism. When the diameter and length of the workpiece being tested by the four-way valve change, simply unscrew the sealing copper head, remove the sealing ring and sealing sleeve, and replace them with a new sealing sleeve, a new sealing ring, and a new sealing copper head. The replacement of other sealing heads is similar. In addition, the sealing sleeve adopts a double-layer radial seal, which is reliable. There is a sealing ring gap between the sleeve and the fixed plate on the side of the vacuum chamber, which can absorb the tolerance of inconsistent workpiece dimensions and has a certain amount of fluctuation. The replacement is simple. For workpieces with different diameters and sealing positions, only the front sleeve sealing ring and sealing copper head need to be replaced, making the replacement convenient. Attached Figure Description
[0011] Figure 1 A schematic diagram of the structure of the interchangeable four-way valve vacuum chamber helium detection sealing mechanism provided in this embodiment of the utility model.
[0012] Figure 2 for Figure 1 A schematic diagram of the inflation sealing head of the helium detection sealing mechanism for the vacuum chamber of the replaceable four-way valve.
[0013] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the gas-filling sealing head of the helium detection sealing mechanism of the vacuum chamber of the replaceable four-way valve.
[0014] Figure 4 for Figure 1 A schematic diagram of the structure of the gas-filling sealing head and the four-way valve test workpiece combined in the vacuum chamber helium detection sealing mechanism of the replaceable four-way valve.
[0015] Figure 5 for Figure 1A plan view showing the combination of the helium detection sealing mechanism of the vacuum chamber for the replaceable four-way valve and the test workpiece of the four-way valve.
[0016] The reference numerals and components involved in the accompanying drawings are shown below:
[0017] 100, vacuum box 110, through hole 200, air-filled sealing head
[0018] 210, sealing copper head; 220, sealing ring; 230, sealing sleeve.
[0019] 240, Sealed inflation rod; 250, Inflation port; 260, Annular groove
[0020] 270, sleeve sealing ring 280, connecting hole 290, hook
[0021] 300, Sealing tension spring; 400, Four-way valve test workpiece Detailed Implementation
[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0023] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0024] Example 1
[0025] Figure 1 This is a structural schematic diagram of the interchangeable four-way valve vacuum chamber helium detection sealing mechanism provided in an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of the inflation sealing head of the helium detection sealing mechanism for the replaceable four-way valve vacuum chamber. Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the inflation sealing head of the helium detection sealing mechanism for the vacuum chamber of the replaceable four-way valve. Figure 4 for Figure 1 A schematic diagram showing the structure of the gas-filling sealing head and the test workpiece of the four-way valve vacuum chamber helium detection sealing mechanism for the replaceable four-way valve. Figure 5 for Figure 1 A plan view showing the combination of the helium detection sealing mechanism of the vacuum chamber for the replaceable four-way valve and the test workpiece of the four-way valve. Please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The interchangeable four-way valve vacuum chamber helium detection sealing mechanism provided in this embodiment is characterized by comprising a vacuum chamber 100, an inflation sealing head 200, and a sealing tension spring 300; the vacuum chamber 100 is a hollow cuboid shape, and four through holes 110 are provided on one side of the vacuum chamber 100, into which the inflation sealing head 200 is inserted; the inflation sealing head 200 includes a sealing copper head 210, a sealing ring 220, a sealing sleeve 230, and a sealing inflation rod 240, the sealing inflation rod... One end of the sealing rod 240 is inserted into the sealing sleeve 230 and extends out from the other end of the sealing sleeve 230; the sealing copper head 210 is sleeved on the end of the sealing inflation rod 240, and the sealing ring 220 is sleeved on the side of the end of the sealing inflation rod 240, the sealing ring 220 is located between the sealing sleeve 230 and the sealing copper head 210; an inflation port 250 is provided on the side of the sealing inflation rod 240, the inflation port 250 is connected to the sealing copper head 210, and the sealing tension spring 300 is connected to the tail of the sealing inflation rod 240.
[0026] When using the interchangeable four-way valve vacuum chamber helium detection sealing mechanism of this utility model, the four-way valve test workpiece 400 is placed in the vacuum chamber 100, and four sealing copper heads 210 are inserted into the four ports on the four-way valve test workpiece 400 respectively. The sealing rings 220 are pressed against the inner wall of the ports and the vacuum chamber 100 is sealed.
[0027] It should be noted that when the diameter and length of the pipe opening of the four-way valve test workpiece 400 change, simply unscrew the sealing copper head 210 manually, remove the sealing ring 220 and sealing sleeve 230, and replace them with a new sealing sleeve 230, a new sealing ring 220 and a new sealing copper head 210; the replacement of other sealing heads is the same.
[0028] In addition, the sealing sleeve 230 adopts a double-layer radial seal, which is reliable. It also has a sealing ring 220 gap with the fixed plate on the side of the vacuum box 100, which can absorb the tolerance of inconsistent workpiece size and has a certain amount of fluctuation. It is easy to change the type. For workpieces with different diameters and sealing positions, you only need to replace the front sleeve sealing ring 220 and the sealing copper head 210. The change of type is convenient.
[0029] Furthermore, the sealing sleeve 230 has two annular grooves 260 on its side, and a sleeve sealing ring 270 is fitted in the annular grooves 260; the sealing sleeve 230 is inserted into the through hole 110, and the sleeve sealing ring 270 is pressed against the inner wall of the through hole 110; a connecting hole 280 is provided at the tail of the sealing inflation rod 240, and hooks 290 are connected to both ends of the sealing tension spring 300, one of the hooks 290 being hung in the connecting hole 280.
[0030] As can be seen from the above description, the advantages of this utility model are:
[0031] This utility model relates to a replaceable four-way valve vacuum chamber helium testing sealing mechanism. When the diameter and length of the workpiece being tested by the four-way valve change, simply unscrew the sealing copper head, remove the sealing ring and sealing sleeve, and replace them with a new sealing sleeve, a new sealing ring, and a new sealing copper head. The replacement of other sealing heads is similar. In addition, the sealing sleeve adopts a double-layer radial seal, which is reliable. There is a sealing ring gap between the sleeve and the fixed plate on the side of the vacuum chamber, which can absorb the tolerance of inconsistent workpiece dimensions and has a certain amount of fluctuation. The replacement is simple. For workpieces with different diameters and sealing positions, only the front sleeve sealing ring and sealing copper head need to be replaced, making the replacement convenient.
[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A replaceable four-way valve vacuum box helium leak seal mechanism characterized by, The utility model relates to a vacuum box (100), inflation sealing head (200) and sealing tension spring (300) are included; The vacuum box (100) is internally hollow cuboid, four through -holes (110) are equipped on one side of vacuum box (100), and inflation sealing head (200) is inserted in through -hole (110); The inflation sealing head (200) includes sealing copper head (210), sealing ring (220), sealing sleeve (230) and sealing inflation rod (240), and one end of sealing inflation rod (240) is inserted into sealing sleeve (230) and goes out from the other end of sealing sleeve (230); The end of sealing inflation rod (240) is sleeved with sealing copper head (210), and sealing ring (220) is sleeved on the side of the end of sealing inflation rod (240), and sealing ring (220) is located between sealing sleeve (230) and sealing copper head (210); Inflation port (250) is equipped on the side of sealing inflation rod (240), and inflation port (250) and sealing copper head (210) are communicated, and the tail of sealing inflation rod (240) is connected with sealing tension spring (300).
2. The changeover valve vacuum box helium leak seal mechanism of claim 1, wherein, The side of sealing sleeve (230) is equipped with two annular grooves (260), and sleeve sealing ring (270) is sleeved in annular groove (260); Sealing sleeve (230) is inserted into through -hole (110), and sleeve sealing ring (270) is pressed on the inner wall of through -hole (110).
3. The changeover valve vacuum box helium leak seal mechanism of claim 1, wherein, The tail of sealing inflation rod (240) is equipped with connecting hole (280), and hook (290) is connected on both ends of sealing tension spring (300), and one hook (290) is hung in connecting hole (280).