Sealing device for air conditioner indoor unit pipeline connection

Abstract

The utility model provides a sealing device for air conditioner indoor unit pipeline connection, which relates to the technical field of pipeline connection and comprises a first connecting pipeline and a second connecting pipeline, a sliding sleeve is sleeved in the middle of the first connecting pipeline, a first internal thread is arranged on the inner wall of the sliding sleeve, and a mounting disc is fixedly mounted in the middle of the second connecting pipeline. The sliding sleeve is provided with a sealing limiting assembly, the sliding sleeve is connected with the installation disc through the sealing limiting assembly, the fixing sleeve is arranged in the sliding sleeve, meanwhile, the second external threads and the second internal threads are connected together in a meshed mode, and therefore the positioning sleeve can be arranged in the positioning groove. Meanwhile, the clamping sleeve can be arranged in the clamping groove, the tightness between the first connecting pipeline and the second connecting pipeline is improved, the first connecting pipeline and the second connecting pipeline can be subjected to double fixation and multiple sealing, and the sealing performance between the pipelines is higher.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and more specifically, to a sealing device for connecting pipes in an air conditioning indoor unit. Background Technology

[0002] Air conditioning indoor unit piping mainly refers to the refrigerant pipes connecting the indoor and outdoor units of an air conditioner. The indoor unit piping needs to be interconnected. For example, patent application number CN202010619472.0 describes a heating, ventilation, and air conditioning (HVAC) piping connection device, including a first HVAC pipe, a second HVAC pipe, a piping connection device, an adjusting and fixing device, and a guiding and limiting device. The first and second HVAC pipes are fixedly connected by the piping connection device. The piping connection device is equipped with the adjusting and fixing device and the guiding and limiting device. The piping connection device includes a first pipe connector, a second pipe connector, a pipe flange, and an internal connecting bolt. The invention comprises a threaded, negative pressure adsorption port, a vacuum chamber, a connecting pipe, an exhaust port, a vacuum exhaust pipe, a vacuum exhaust pump, and a threaded hole. Its structure is reasonable and simple, and it is easy to use. It enables the connection and installation of HVAC pipes. The negative pressure adsorption effectively improves the sealing degree between the first and second pipe connectors, preventing leakage at the connection point. It also buffers and absorbs vibrations in the HVAC pipes, ensuring the connection stability of the pipe connection device. The above device operates through individual connectors; if any of these connectors become loose, the pipe connections will also become loose, affecting the tightness of the pipe connections. Utility Model Content

[0003] The main purpose of this utility model is to provide a sealing device for connecting pipes in an air conditioning indoor unit, which can effectively solve the problem in the background art where the connection is made by a single connector, and the loosening between the single connectors will cause the pipe connection to become loose, affecting the tightness of the pipes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sealing device for connecting pipes of an air conditioner indoor unit, comprising a first connecting pipe and a second connecting pipe, wherein a sliding sleeve is sleeved and installed in the middle of the first connecting pipe, and the inner wall of the sliding sleeve is provided with a first internal thread; an installation plate is fixedly installed in the middle of the second connecting pipe, and a fixing sleeve is fixedly installed on the surface of the installation plate, the fixing sleeve is fitted into the middle of the second connecting pipe, and the circumferential surface of the fixing sleeve is provided with a first external thread, wherein the first internal thread and the first external thread are engaged and connected; a sealing limiting component is provided on the sliding sleeve, and the sliding sleeve and the installation plate are connected by the sealing limiting component.

[0005] Preferably, a hexagonal sleeve is fixedly installed on the rear end surface of the sliding sleeve.

[0006] Preferably, a retaining ring for restricting the sliding sleeve is fixedly installed in the middle of the first connecting pipe.

[0007] Preferably, a limiting ring is provided on one end surface of the first connecting pipe, and a limiting groove is formed on one end surface of the second connecting pipe, with the limiting ring disposed inside the limiting groove.

[0008] Preferably, a sealing ring is fixedly installed on the front surface of the mounting plate.

[0009] Preferably, the sealing and limiting component includes a positioning sleeve and a positioning groove. The positioning sleeve is fixedly installed on the front surface of the mounting plate, and the positioning groove is formed on one end surface of the sliding sleeve.

[0010] Preferably, the inner wall of the positioning groove is provided with a second internal thread, and the inner surface of the positioning groove is provided with a slot.

[0011] Preferably, the positioning sleeve is disposed inside the positioning groove, and the circumferential surface of the positioning sleeve is provided with a second external thread, which engages with the second internal thread. A retainer is fixedly installed on one end surface of the positioning sleeve, and the retainer is disposed inside the retainer groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The sliding sleeve is placed in the middle of the fixed sleeve. At this time, the operator rotates the sliding sleeve to engage the first internal thread and the first external thread on the inner wall of the sliding sleeve. The fixed sleeve is placed inside the sliding sleeve to connect the pipe. At the same time as the fixed sleeve is placed inside the sliding sleeve, the second external thread and the second internal thread are engaged together, so that the positioning sleeve can be placed inside the positioning groove. At the same time, the clamp can be placed inside the clamp groove, which improves the tightness between the first connecting pipe and the second connecting pipe. This device can double fix the first connecting pipe and the second connecting pipe and provide multiple seals, making the sealing performance between the first connecting pipe and the second connecting pipe stronger. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a sealing device for connecting pipes in an air conditioner indoor unit according to the present invention;

[0015] Figure 2 This is a schematic diagram of the overall garment structure of a sealing device for connecting pipes of an air conditioner indoor unit according to the present invention;

[0016] Figure 3 This is a cross-sectional view of the sliding sleeve of a sealing device for connecting pipes in an air conditioner indoor unit according to the present invention.

[0017] In the diagram: 1. First connecting pipe; 2. Second connecting pipe; 3. Mounting plate; 4. Sealing and limiting assembly; 401. Positioning sleeve; 402. Second external thread; 403. Compression sleeve; 404. Positioning groove; 405. Second internal thread; 406. Slot; 5. Sliding sleeve; 6. Hexagonal sleeve; 7. First internal thread; 8. Limiting ring; 9. Sealing ring; 10. Fixing sleeve; 11. Limiting groove; 12. First external thread; 13. Retaining ring. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 , 2 As shown in Figure 3, a sealing device for connecting pipes of an air conditioner indoor unit includes a first connecting pipe 1 and a second connecting pipe 2. A sliding sleeve 5 is sleeved and installed in the middle of the first connecting pipe 1. The inner wall of the sliding sleeve 5 is provided with a first internal thread 7. An installation plate 3 is fixedly installed in the middle of the second connecting pipe 2. A fixing sleeve 10 is fixedly installed on the surface of the installation plate 3. The fixing sleeve 10 fits against the middle of the second connecting pipe 2. A first external thread 12 is provided on the circumferential surface of the fixing sleeve 10. The first internal thread 7 and the first external thread 12 are engaged and connected. A sealing and limiting component 4 is provided on the sliding sleeve 5. The sliding sleeve 5 and the installation plate 3 are connected by the sealing and limiting component 4.

[0020] like Figure 1 , 2 As shown, a hexagonal sleeve 6 is fixedly installed on the rear end surface of the sliding sleeve 5, which facilitates the rotation of the sliding sleeve 5 by the operator.

[0021] like Figure 1 , 2 As shown, a retaining ring 13 is fixedly installed in the middle of the first connecting pipe 1 to restrict the position of the sliding sleeve 5.

[0022] like Figure 1 , 2 As shown, a limiting ring 8 is provided on one end surface of the first connecting pipe 1, and a limiting groove 11 is provided on one end surface of the second connecting pipe 2. The limiting ring 8 is disposed inside the limiting groove 11, which can improve the sealing performance of the connection between the first connecting pipe 1 and the second connecting pipe 2.

[0023] like Figure 1 , 3As shown, a sealing ring 9 is fixedly installed on the front surface of the mounting plate 3 to improve the sealing performance between the mounting plate 3 and the sliding sleeve 5.

[0024] like Figure 2 , 3 As shown, the sealing and limiting assembly 4 includes a positioning sleeve 401 and a positioning groove 404. The positioning sleeve 401 is fixedly installed on the front surface of the mounting plate 3. The positioning groove 404 is formed on one end surface of the sliding sleeve 5. The inner wall of the positioning groove 404 is provided with a second internal thread 405. The inner surface of the positioning groove 404 is provided with a retaining groove 406. The positioning sleeve 401 is disposed inside the positioning groove 404. The circumferential surface of the positioning sleeve 401 is provided with a second external thread 402, which engages with the second internal thread 405. A retaining sleeve 403 is fixedly installed on one end surface of the positioning sleeve 401. The retaining sleeve 403 is disposed inside the retaining groove 406. The sliding sleeve 5 is fitted onto the middle of the fixed sleeve 10. At this time, by rotating the sliding sleeve 5, the first internal thread 7 on the inner wall of the sliding sleeve 5 is engaged with the first external thread 12, and the fixed sleeve 10 is disposed inside the sliding sleeve 5 to connect the pipeline. Because the positioning sleeve 401 is fixedly installed on the front surface of the mounting plate 3, the positioning... A groove 404 is formed on one end surface of the sliding sleeve 5. The inner wall of the positioning groove 404 is provided with a second internal thread 405. A slot 406 is formed on the inner surface of the positioning groove 404. The positioning sleeve 401 is set inside the positioning groove 404. The circumferential surface of the positioning sleeve 401 is provided with a second external thread 402. The second external thread 402 is engaged with the second internal thread 405. A retainer 403 is fixedly installed on one end surface of the positioning sleeve 401. The retainer 403 is set inside the slot 406. When the fixing sleeve 10 is set inside the sliding sleeve 5, the second external thread 402 and the second internal thread 405 are engaged together, so that the positioning sleeve 401 can be set inside the positioning groove 404 and the retainer 403 can be set inside the slot 406. This improves the tightness between the first connecting pipe 1 and the second connecting pipe 2. This device can double fix the first connecting pipe 1 and the second connecting pipe 2 and provide multiple seals, making the sealing performance between the first connecting pipe 1 and the second connecting pipe 2 stronger.

[0025] The working principle of a sealing device for connecting pipes in an air conditioning indoor unit:

[0026] In use, when this device is needed to connect pipes, the sliding sleeve 5 is fitted onto the middle of the fixed sleeve 10. The operator rotates the sliding sleeve 5 to engage the first internal thread 7 and the first external thread 12 on its inner wall. The fixed sleeve 10 is then placed inside the sliding sleeve 5 to connect the pipes. Because the positioning sleeve 401 is fixedly installed on the front surface of the mounting plate 3, a positioning groove 404 is formed on one end surface of the sliding sleeve 5. The inner wall of the positioning groove 404 has a second internal thread 405, and the inner surface of the positioning groove 404 has a slot 406. The positioning sleeve 401 is placed inside the positioning groove 404, and its circumferential surface has a second external thread 402. The second external thread 402 engages with the second internal thread 405. A retainer 403 is fixedly installed on one end surface of the positioning sleeve 401. The retainer 403 is located inside the retainer groove 406. While the fixing sleeve 10 is placed inside the sliding sleeve 5, the second external thread 402 and the second internal thread 405 are engaged together. This allows the positioning sleeve 401 to be placed inside the positioning groove 404, and the retainer 403 to be placed inside the retainer groove 406, improving the tightness between the first connecting pipe 1 and the second connecting pipe 2. This device can double fix the first connecting pipe 1 and the second connecting pipe 2 and provide multiple seals, making the sealing performance between the first connecting pipe 1 and the second connecting pipe 2 stronger.

[0027] The above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A sealing device for connecting pipes in an air conditioner indoor unit, comprising a first connecting pipe (1) and a second connecting pipe (2), characterized in that: A sliding sleeve (5) is fitted in the middle of the first connecting pipe (1). The inner wall of the sliding sleeve (5) is provided with a first internal thread (7). An installation plate (3) is fixedly installed in the middle of the second connecting pipe (2). A fixing sleeve (10) is fixedly installed on the surface of the installation plate (3). The fixing sleeve (10) fits into the middle of the second connecting pipe (2). A first external thread (12) is provided on the circumferential surface of the fixing sleeve (10). The first internal thread (7) and the first external thread (12) are meshed and connected. A sealing and limiting component (4) is provided on the sliding sleeve (5). The sliding sleeve (5) and the installation plate (3) are connected by the sealing and limiting component (4).

2. The sealing device for connecting pipes in an air conditioning indoor unit according to claim 1, characterized in that; A hexagonal sleeve (6) is fixedly installed on the rear end surface of the sliding sleeve (5).

3. A sealing device for connecting pipes in an air conditioning indoor unit according to claim 1, characterized in that: A retaining ring (13) is fixedly installed in the middle of the first connecting pipe (1) to restrict the sliding sleeve (5).

4. A sealing device for connecting pipes in an air conditioning indoor unit according to claim 1, characterized in that: A limiting ring (8) is provided on one end surface of the first connecting pipe (1), and a limiting groove (11) is opened on one end surface of the second connecting pipe (2), with the limiting ring (8) disposed inside the limiting groove (11).

5. A sealing device for connecting pipes in an air conditioning indoor unit according to claim 1, characterized in that: A sealing ring (9) is fixedly installed on the front surface of the mounting plate (3).

6. A sealing device for connecting pipes in an air conditioning indoor unit according to claim 1, characterized in that: The sealing and limiting component (4) includes a positioning sleeve (401) and a positioning groove (404). The positioning sleeve (401) is fixedly installed on the front surface of the mounting plate (3), and the positioning groove (404) is opened on one end surface of the sliding sleeve (5).

7. A sealing device for connecting pipes in an air conditioning indoor unit according to claim 6, characterized in that: The inner wall of the positioning groove (404) is provided with a second internal thread (405), and the inner surface of the positioning groove (404) is provided with a slot (406).

8. A sealing device for connecting pipes in an air conditioning indoor unit according to claim 7, characterized in that: The positioning sleeve (401) is disposed inside the positioning groove (404). The circumferential surface of the positioning sleeve (401) is provided with a second external thread (402). The second external thread (402) is engaged with the second internal thread (405). A retainer (403) is fixedly installed on one end surface of the positioning sleeve (401). The retainer (403) is disposed inside the retainer groove (406).

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