Air-tightness checking device for air conditioning piping

Abstract

This utility model discloses an airtightness inspection device for air conditioning pipes, including a transparent water tank. A drain pipe is installed at the bottom of one end of the transparent water tank. A servo motor is fixed at the top corner of the front and rear sides of the transparent water tank. A horizontal shaft is installed at the output end of the servo motor. The horizontal shaft is rotatably mounted at the top corner of the front and rear sides of the transparent water tank via a bearing seat. The end of the horizontal shaft is connected to the bottom of one end of a top plate. A locking bolt is installed through the edge of one end of the top plate. The bottom end of the locking bolt is connected to a locking hole, which is located on the top of one side of the transparent water tank. A base plate is fixed to the top surface of the other end of the top plate. This airtightness inspection device for air conditioning pipes adopts a novel structural design, which can not only stably fix multiple rigid pipes or flexible pipes of different diameters and lengths, but also allows the pipes to quickly enter the inspection environment through a rotating mechanism. It is easy to operate and greatly improves inspection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning pipeline inspection technology, specifically to an airtightness inspection device for air conditioning pipelines. Background Technology

[0002] Checking the airtightness of air conditioning pipes is a crucial and indispensable core step in the installation, repair, and maintenance of air conditioning systems. It ensures system performance and energy efficiency, protects core components, extends their service life, prevents system corrosion, and maintains the internal environment.

[0003] Existing airtightness testing devices for air conditioning pipes, such as the utility model patent CN216284136U entitled "Airtightness Testing Device for Air Conditioning Pipes," include a base, a water tank and a support column arranged sequentially from left to right on the base. The top left end of the support column is slidably connected to a clamping assembly for clamping the pipe body via a mounting rod. The clamping assembly is driven by a first electric telescopic rod. This patented device is bulky, inconvenient to operate, and has a small contact area between the positioning mechanism and the pipe, making it unable to stably fix rigid or flexible pipes of different diameters and lengths. Furthermore, its testing efficiency is low. Therefore, a new airtightness testing device for air conditioning pipes needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide an airtightness inspection device for air conditioning pipes, so as to solve the problems mentioned in the background art: the existing device has a large overall size, is not convenient to operate, and has a small contact area between the positioning mechanism and the pipe, making it unable to stably fix rigid pipes or flexible pipes of different diameters and lengths, while also having low detection efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtightness inspection device for air conditioning pipes, comprising a transparent water tank, a drain pipe installed at the bottom of one end of the transparent water tank, a servo motor fixed at the top corners of the front and rear sides of the transparent water tank, a horizontal shaft installed at the output end of the servo motor, the horizontal shaft being rotatably mounted at the top corners of the front and rear sides of the transparent water tank via a bearing seat, the end of the horizontal shaft being connected to the bottom of one end of a top plate, a locking bolt being installed through the edge of one end of the top plate, the bottom end of the locking bolt being connected to a locking hole, the locking hole being opened at the top of one side of the transparent water tank, a base plate being fixed to the top surface of the other end of the top plate, a center positioning block being fixed to the center of one side of the base plate, an outer positioning sleeve being fixed to the surface of the base plate outside the center positioning block, a pipe winding column being installed in the middle of the top surface of the top plate, a threaded rod being fixed to one end of the top plate, a limit nut being installed on the threaded rod, the threaded rod passing through a stabilizing hole, the stabilizing hole being opened at the end of the horizontal part of the limit plate, and a support spring being installed between the end of the horizontal part of the limit plate and the top surface of the top plate.

[0006] Preferably, the servo motor and the horizontal axis are symmetrically distributed about the center of the top plate, the top plate is made of fine stainless steel wire, and the top plate and the transparent water tank form a rotating mechanism through the horizontal axis.

[0007] Preferably, the centers of the substrate, the middle positioning block, the outer positioning sleeve and the limiting plate are on the same vertical plane, and the top view shape of the substrate is "T".

[0008] Preferably, the middle positioning block is a solid frustum-shaped structure made of rubber, the end diameter of the middle positioning block is smaller than the inner diameter of the outer positioning sleeve, and the outer positioning sleeve is made of rubber.

[0009] Preferably, the frontal shape of the winding column is "T" shaped, and the winding column is symmetrically distributed about the vertical plane where the center of the substrate and the limiting plate are located.

[0010] Preferably, the threaded rod and the stabilizing hole are slidably connected, and both the threaded rod and the stabilizing hole are symmetrically distributed about the center of the limiting plate, with the middle part of the limiting plate being arc-shaped.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the air tightness inspection device for air conditioning pipeline adopts a new structural design, which can not only stably fix multiple rigid pipes or flexible pipes of different diameters and lengths, but also allow the pipeline to quickly enter the inspection environment through the rotation mechanism, making it easy to operate and greatly improving the inspection efficiency.

[0012] 1. The horizontal axis driven by the servo motor rotates the top plate, allowing the pipes fixed between the base plate and the limiting plate to be quickly submerged in the clear water in the transparent water tank, greatly simplifying the operation steps and enabling efficient and continuous inspection of the airtightness of the pipes.

[0013] 2. The base plate, the middle positioning block and the outer positioning sleeve can stably seal one end of the pipeline, and the pipe column can position long soft pipelines. With the help of the threaded rod, the limit nut, the limit plate and the support spring, the other end of the pipeline is squeezed and positioned to ensure the stability of the pipeline during the inspection process. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a frontal cross-sectional view of the present invention.

[0016] Figure 3 This is a top view cross-sectional structural diagram of the positioning block and outer positioning sleeve in this utility model;

[0017] Figure 4 This is a side view sectional diagram of the limiting plate of this utility model.

[0018] In the diagram: 1. Transparent water tank; 2. Drain pipe; 3. Servo motor; 4. Horizontal shaft; 5. Top plate; 6. Locking bolt; 7. Locking hole; 8. Base plate; 9. Middle positioning block; 10. Outer positioning sleeve; 11. Winding column; 12. Threaded rod; 13. Limit nut; 14. Stabilizing hole; 15. Limiting plate; 16. Support spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an airtightness inspection device for air conditioning pipes, including a transparent water tank 1, a drain pipe 2, a servo motor 3, a horizontal shaft 4, a top plate 5, a locking bolt 6, a locking hole 7, a base plate 8, a central positioning block 9, an outer positioning sleeve 10, a pipe winding column 11, a threaded rod 12, a limit nut 13, a stabilizing hole 14, a limit plate 15, and a support spring 16. A drain pipe 2 is installed at one bottom end of the transparent water tank 1. A servo motor 3 is fixed at the top corners of the front and rear sides of the transparent water tank 1. A horizontal shaft 4 is installed at the output end of the servo motor 3. The horizontal shaft 4 is rotatably mounted at the top corners of the front and rear sides of the transparent water tank 1 via a bearing seat. The end of the horizontal shaft 4 is connected to the top plate 5. The top plate 5 is connected to the bottom end. A locking bolt 6 is installed through one edge of the top plate 5. The bottom end of the locking bolt 6 is connected to the locking hole 7. The locking hole 7 is opened on the top of one side of the transparent water tank 1. A base plate 8 is fixed on the top surface of the other end of the top plate 5. A center positioning block 9 is fixed on the center of one side of the base plate 8. An outer positioning sleeve 10 is fixed on the surface of the base plate 8 outside the center positioning block 9. A winding column 11 is installed in the middle of the top surface of the top plate 5. A threaded rod 12 is fixed at one end of the top plate 5. A limit nut 13 is installed on the threaded rod 12. The threaded rod 12 passes through a stabilizing hole 14. The stabilizing hole 14 is opened at the end of the horizontal part of the limit plate 15. A support spring 16 is installed between the end of the horizontal part of the limit plate 15 and the top surface of the top plate 5.

[0021] In this example, the servo motor 3 and the horizontal shaft 4 are symmetrically distributed about the center of the top plate 5. The top plate 5 is made of fine stainless steel wire. The top plate 5 and the transparent water tank 1 form a rotating mechanism through the horizontal shaft 4. The above structural design enables the servo motor 3 and the horizontal shaft 4 to stably drive the top plate 5 and the mounting mechanism on it to rotate. The top plate 5 can rotate smoothly to be submerged in clean water and to be removed from clean water.

[0022] The center of the substrate 8, the middle positioning block 9, the outer positioning sleeve 10 and the limiting plate 15 are on the same vertical plane. The top view of the substrate 8 is "T" shaped. The above structural design enables the substrate 8 to stably support and position the middle positioning block 9, the outer positioning sleeve 10 and one end of the pipe, and can stably fix the pipeline in conjunction with the limiting plate 15.

[0023] The middle positioning block 9 is a solid frustum-shaped structure made of rubber. The diameter of the end of the middle positioning block 9 is smaller than the inner diameter of the outer positioning sleeve 10. The outer positioning sleeve 10 is made of rubber. The above structural design allows the middle positioning block 9 to be inserted into one end of the pipe, and the outer positioning sleeve 10 to be stably fitted on the outside of the pipe to seal one end of the pipe.

[0024] The front view shape of the winding post 11 is "T" shaped. The winding post 11 is symmetrically distributed about the vertical plane where the center of the substrate 8 and the limiting plate 15 are located. The above structural design enables the long hose to be stably positioned by the winding post 11.

[0025] The threaded rod 12 and the stabilizing hole 14 are slidably connected. Both the threaded rod 12 and the stabilizing hole 14 are symmetrically distributed about the center of the limiting plate 15. The middle part of the limiting plate 15 is set as an arc. The above structural design allows the installation height of the limiting plate 15 to be easily adjusted and to fit stably with the pipeline, so as to stably squeeze and position different pipelines.

[0026] Working principle: When installing flexible and rigid pipes, first pass the pipe through the center of the limiting plate 15, insert the end of the pipe into the inner side of the outer positioning sleeve 10 until the outer wall of the frustum-shaped middle positioning block 9 is tightly fitted with the inner wall of the pipe end. The outer positioning sleeve 10 uses its own elasticity to tightly cover the outside of the pipe end, sealing one end of the pipe. If it is a flexible pipe, wrap the middle section of the flexible pipe around the symmetrically distributed pipe winding column 11, and then simultaneously screw down the symmetrically distributed limiting nuts 13. The limiting nuts 13 squeeze the limiting plate 15 and slide vertically down along the threaded rod 12 with the stabilizing hole 14. The limiting plate 15 squeezes the other end of the pipe to fit and fix it to the top plate 5, and connects the other end of the pipe to the gas supply pipe. The gas supply pipe is connected to the external gas supply device. The gas supply pipe and the external gas supply device are existing mature technologies, which are well known to those skilled in the art, and will not be described in detail here.

[0027] Then, the locking bolt 6 is screwed up completely out of the locking hole 7, releasing the horizontal lock on the top plate 5. The symmetrically distributed servo motors 3 then drive the horizontal shaft 4. Figure 2 The top plate 5 is rotated 90° counterclockwise, and the top plate 5, along with the multiple pipes fixed on it, is submerged in the clear water in the transparent water tank 1. Air is supplied to the pipes installed on the top plate 5 through an external air supply device and air supply pipes. It is observed whether any bubbles are generated. This is the working principle of the air tightness inspection device for the air conditioning pipes.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airtightness inspection device for air conditioning piping, comprising a transparent water tank (1), characterized in that: A drain pipe (2) is installed at the bottom of one end of the transparent water tank (1). A servo motor (3) is fixed at the top corner of the front and rear sides of the transparent water tank (1). A horizontal shaft (4) is installed at the output end of the servo motor (3). The horizontal shaft (4) is rotatably installed at the top corner of the front and rear sides of the transparent water tank (1) through a bearing seat. The end of the horizontal shaft (4) is connected to the bottom of one end of the top plate (5). A locking bolt (6) is installed through the edge of one end of the top plate (5). The bottom end of the locking bolt (6) is connected to the locking hole (7). The locking hole (7) is opened on the top of one side of the transparent water tank (1). The other end of the top plate (5) is top. A base plate (8) is fixed on the surface. A center positioning block (9) is fixed on one side of the base plate (8). An outer positioning sleeve (10) is fixed on the surface of the base plate (8) outside the center positioning block (9). A winding column (11) is installed in the middle of the top surface of the top plate (5). A threaded rod (12) is fixed at one end of the top plate (5). A limit nut (13) is installed on the threaded rod (12). The threaded rod (12) passes through a stabilizing hole (14). The stabilizing hole (14) is opened at the end of the horizontal part of the limit plate (15). A support spring (16) is installed between the end of the horizontal part of the limit plate (15) and the top surface of the top plate (5).

2. The airtightness inspection device for air conditioning pipes according to claim 1, characterized in that: The servo motor (3) and the horizontal shaft (4) are symmetrically distributed about the center of the top plate (5). The top plate (5) is made of fine stainless steel wire. The top plate (5) and the transparent water tank (1) form a rotating mechanism through the horizontal shaft (4).

3. The airtightness inspection device for air conditioning pipelines according to claim 1, characterized in that: The centers of the substrate (8), the middle positioning block (9), the outer positioning sleeve (10) and the limiting plate (15) are on the same vertical plane, and the top view of the substrate (8) is "T" shaped.

4. The airtightness inspection device for air conditioning pipelines according to claim 1, characterized in that: The middle positioning block (9) is a solid frustum-shaped structure made of rubber. The diameter of the end of the middle positioning block (9) is smaller than the inner diameter of the outer positioning sleeve (10). The outer positioning sleeve (10) is made of rubber.

5. The airtightness inspection device for air conditioning pipelines according to claim 1, characterized in that: The frontal shape of the winding post (11) is "T" shaped, and the winding post (11) is symmetrically distributed about the vertical plane where the center of the substrate (8) and the limiting plate (15) are located.

6. The airtightness inspection device for air conditioning pipelines according to claim 1, characterized in that: The threaded rod (12) and the stabilizing hole (14) are slidably connected. The threaded rod (12) and the stabilizing hole (14) are symmetrically distributed about the center of the limiting plate (15). The middle part of the limiting plate (15) is set as an arc.

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