Compressor exhaust pipe sealing connection device

Abstract

The utility model discloses a compressor exhaust pipe sealing connection device which comprises a compressor cylinder cover exhaust port and an exhaust pipe, an exhaust connector is sleeved on the exhaust pipe, a copper hoop is sleeved on the exhaust pipe and located at the bottom of the exhaust connector, and the exhaust connector is in threaded connection with the compressor cylinder cover exhaust port. An iron exhaust elbow and thread glue on the air compressor body are omitted, the copper exhaust connector and the copper hoop are connected with the air outlet of the air cylinder cover in a sealed mode, and the durability of sealed connection of the exhaust pipe is greatly improved. The high-temperature and high-pressure bearing capacity of the joint is greatly improved; chamfers are arranged at the upper end and the lower end of the copper hoop and matched with chamfers in a cylinder exhaust port or an exhaust connector respectively, and the sealing performance of the exhaust pipe connecting position is improved. And the risk of air leakage of the compressor is reduced, the probability of safety accidents is reduced, and the difficulty and cost of equipment maintenance are reduced.

Description

Technical Field

[0001] The utility model relates to an air compressor, in particular to a sealing connection device for a compressor exhaust pipe. Background Art

[0002] Compressed air is the fourth most widely used energy source in the industrial field. A gas compressor is a power device that converts mechanical energy into gas pressure energy and is commonly used to provide gas power for pneumatic tools. It is divided into low-pressure compressed air, medium-pressure compressed air, and high-pressure compressed air according to pressure levels. Leakage of compressed air may occur at any part of the device, and the most common leakage parts are mainly concentrated in the pipeline connection parts, especially at the exhaust pipe connection. As Figure 1 shown, in the prior art, the exhaust elbow 2 on the gas compressor main unit is fixedly connected to the exhaust pipe through a copper hoop 4 and then fixed with a nut 5 for easy disassembly or connection between the gas compressor main unit and the application main body for gas transmission. In the prior art, the exhaust elbow 2 on the gas compressor main unit is made of iron material. To ensure airtightness, after the exhaust elbow 2 is threadedly connected to the cylinder exhaust port 1, thread sealant 3 is applied to its outside for sealing. When preparing high-pressure compressed air, its pressure is generally between 0.8 MPa and 1.6 MPa. High-temperature and high-pressure gas is discharged from the cylinder. After using for a period of time, the thread sealant 3 at the exhaust elbow 2 starts to carbonize, and the sealing performance between it and the cylinder is greatly reduced, making it easy to leak. The leakage of high-temperature and high-pressure gas causes waste of resources, damage to equipment or personnel, and also increases the difficulty and cost of maintenance. Summary of the Utility Model

[0003] Purpose of the Utility Model: The purpose of the utility model is to improve the durability of the sealing connection of the air compressor exhaust pipe and provide a sealing connection device for the compressor exhaust pipe.

[0004] Technical Solution: The sealing connection device for the compressor exhaust pipe described in the utility model includes a compressor cylinder head exhaust port and an exhaust pipe. An exhaust joint is sleeved on the exhaust pipe, and a copper hoop is sleeved on the exhaust pipe at the bottom of the exhaust joint. The exhaust joint is threadedly connected to the compressor cylinder head exhaust port.

[0005] Furthermore, the copper hoop is a cylinder. A first circumferential chamfer is provided at one end of the outer wall of the copper hoop. A first chamfer is provided below the thread of the compressor cylinder head exhaust port. The first chamfer and the first circumferential chamfer cooperate to increase the sealing performance of the connection between the copper hoop and the compressor cylinder head exhaust port. A second circumferential chamfer is provided at the other end of the copper hoop. A second chamfer is provided on the inner wall of the bottom end where the exhaust joint is connected to the compressor cylinder head exhaust port. The second chamfer and the second circumferential chamfer cooperate to increase the sealing performance of the connection between the copper hoop and the exhaust joint.

[0006] Further, the first and second circumferential chamfers are 30° to 60°, and the vertical height is 2 mm to 3 mm, which further increases the sealing performance of the connection between the copper hoop and the exhaust port or exhaust joint of the compressor cylinder head.

[0007] Further, the inner diameter of the copper hoop is equal to the outer diameter of the exhaust pipe, and the total height is 5 cm to 7 cm. Under the action of pressure, the copper hoop is tightly held together with the exhaust pipe, increasing the sealing performance of the connection.

[0008] Further, the exhaust joint is a two-way copper joint, which enhances its resistance to the impact of high-temperature and high-pressure gases, and improves the sealing performance and durability of the connection.

[0009] Further, one end of the exhaust joint is provided with an external thread, which is threadedly connected to the exhaust port of the compressor cylinder head to increase the firmness and airtightness of the connection.

[0010] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: 1. The iron exhaust elbow and thread sealant on the air compressor main body are cancelled, and a copper exhaust joint and a copper hoop are used for sealed connection with the cylinder exhaust port, greatly improving the durability of the sealed connection of the exhaust pipe; 2. The ability of the connection to withstand high temperature and high pressure is greatly improved; 3. The chamfers at the upper and lower ends of the copper hoop cooperate with the chamfers inside the cylinder exhaust port or exhaust joint respectively, improving the sealing performance of the exhaust pipe connection; 4. The risk of air leakage of the compressor is reduced, the probability of safety accidents is reduced, and the difficulty and cost of equipment maintenance are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the prior art of the air compressor exhaust pipe;

[0012] Figure 2 is a schematic structural diagram of the present utility model;

[0013] Figure 3 is a schematic structural diagram of the copper hoop of the present utility model;

[0014] Figure 4 is a schematic structural diagram of the exhaust joint of the present utility model;

[0015] Figure 5 is a schematic structural diagram of the exhaust port of the compressor cylinder head of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solution of the present utility model will be further described below with reference to the drawings.

[0017] As Figure 2A compressor exhaust pipe sealing connection device as shown includes a compressor cylinder head exhaust port 1 and an exhaust pipe 7. An exhaust joint 6 is sleeved on the exhaust pipe 7, and a copper hoop 4 is sleeved on the upper part of the exhaust pipe 7 and the bottom of the exhaust joint 6. The exhaust joint 6 is a two-way copper joint. One end of the exhaust joint 6 is provided with an external thread for mating with the compressor cylinder head exhaust port 1, and the exhaust joint 6 is threadedly connected to the compressor cylinder head exhaust port 1 for sealing. As Figure 3 shown, the copper hoop 4 is a cylinder. The inner diameter of the copper hoop 4 is equal to the outer diameter of the exhaust pipe 7, and the total height is 7 cm (which can be set to 5 cm - 7 cm according to the height of the compressor exhaust port). The upper and lower ends of the outer wall of the copper hoop 4 are provided with a first circumferential chamfer 8-1 and a second circumferential chamfer 8-2. The chamfer is 60° and the vertical height is 2 mm (the chamfer can also be set to 30° - 60° and the vertical height can be set to 2 mm - 3 mm according to the sealing requirements). As Figure 4 shown, the inner wall of the bottom end where the exhaust joint 6 is connected to the compressor cylinder head exhaust port 1 is provided with a second chamfer 10, and the second chamfer 10 cooperates with the second circumferential chamfer 8-2 of the copper hoop 4 to improve the sealing performance of the connection between the exhaust joint 6 and the copper hoop 4. As Figure 5 shown, a first chamfer 9 for increasing the sealing performance of the connection with the copper hoop 4 is provided below the thread of the compressor cylinder head exhaust port 1. The first chamfer 9 cooperates with the first circumferential chamfer 8-1 of the copper hoop 4 to increase the sealing performance of the connection between the compressor cylinder head exhaust port 1 and the copper hoop 4.

[0018] During use, the exhaust joint 6 is first sleeved on the exhaust pipe 7, and then the copper hoop 4 is sleeved on the bottom end of the exhaust joint 6. The exhaust pipe 7 with the exhaust joint 6 and the copper hoop 4 is inserted into the compressor cylinder head exhaust port 1, and then the exhaust joint 6 is screwed into the compressor cylinder head exhaust port 1. During the screwing process, the inner hole of the copper hoop 4 is stuck to the exhaust pipe 7 under extrusion. The first circumferential chamfer 8-1 and the second circumferential chamfer 8-2 at both ends of the outer side of the copper hoop 4 respectively cooperate with the first chamfer 9 of the compressor cylinder head exhaust port 1 or the second chamfer 10 of the exhaust joint, finally realizing the sealed connection between the exhaust pipe 7 and the compressor cylinder head exhaust port 1, ensuring that the joint does not leak under the impact of high-temperature and high-pressure gas, and improving the airtightness and sealing durability of the exhaust pipe connection.

Claims

1. A compressor exhaust pipe sealing connection device, comprising a compressor cylinder head exhaust port (1) and an exhaust pipe (7), characterized in that, An exhaust joint (6) is sleeved on the exhaust pipe (7). A copper hoop (4) is sleeved on the exhaust pipe (7) at the bottom of the exhaust joint (6). The exhaust joint (6) is threadedly connected to the exhaust port of the compressor cylinder head (1).

2. The compressor exhaust pipe sealing connection device according to claim 1, wherein, The copper hoop (4) is a cylinder. A first circumferential chamfer (8-1) is provided at one end of the outer wall of the copper hoop (4). A first chamfer (9) that cooperates with the first circumferential chamfer (8-1) to increase the connection sealing performance is provided below the thread of the exhaust port of the compressor cylinder head (1).

3. The compressor exhaust pipe sealing connection device according to claim 2, characterized in that, A second circumferential chamfer (8-2) is provided at the other end of the copper hoop (4). A second chamfer (10) that cooperates with the second circumferential chamfer (8-2) to increase the sealing performance at the connection is provided on the inner wall of the bottom end where the exhaust joint (6) is connected to the exhaust port of the compressor cylinder head (1).

4. The compressor exhaust pipe sealing connection device according to claim 2 or 3, characterized in that, The first circumferential chamfer (8-1) and the second circumferential chamfer (8-2) are 30° to 60°.

5. The compressor exhaust pipe sealing connection device according to claim 2 or 3, characterized in that, The vertical height of the first circumferential chamfer (8-1) and the second circumferential chamfer (8-2) is 2 mm to 3 mm.

6. The compressor exhaust pipe sealing connection device according to claim 2 or 3, characterized in that, The inner diameter of the copper hoop (4) is equal to the outer diameter of the exhaust pipe (7), and the total height is 5 cm to 7 cm.

7. The compressor exhaust pipe sealing connection device according to claim 1, characterized in that, The exhaust joint (6) is a two-way copper joint.

8. The compressor exhaust pipe sealing connection device according to claim 6, characterized in that, An external thread that cooperates with the exhaust port of the compressor cylinder head (1) is provided at one end of the exhaust joint (6).

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