Switching mechanism for compressed air purging device

Abstract

The utility model relates to a switching mechanism for a compressed air purging device. The switching mechanism comprises a purging device adapter and a purging pipe quick connector, the purging device adapter comprises a threaded connector and an extension pipe barrel, one end of the threaded connector is connected with an external thread on the compressed air needle valve, the extension pipe barrel is welded to the other end of the threaded connector, three internal threaded holes with different diameters are formed in the extension pipe barrel, and one end of the purging pipe quick connector is connected with the other end of the threaded connector. And the other end of the blowing pipe is connected with the blowing pipe. According to the utility model, the working efficiency of daily purging work can be improved, and the personal safety of workers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, in particular to a switching mechanism for a compressed air blowing device. Background Art

[0002] The #9, #10 and #11 units of our company's Junliangcheng Power Plant are all coal-fired units. There are a large number of pressure and flow measurement points during the operation of the coal machine. The on-site measurement is mainly achieved through pressure and flow transmitters. Keeping the sampling tube unobstructed is the top priority to ensure accurate measurement. Therefore, during the maintenance process, we often use compressed air to purge the sampling tube to clear the blockage.

[0003] However, the number of needle valves at the compressed air supply point on site is limited and can only be used by one person at a time. It is impossible for multiple people to work at the same time.

[0004] In addition, it is difficult to obtain compressed air during use, and it requires the cooperation of two people, one to fix the compressed air extraction pipe and the other to perform the purging work.

[0005] At the same time, there are certain dangers in fixing the compressed air sampling tube. When the compressed air flow is large, the operator is easily hit.

[0006] In addition, there are many devices on site, and it is inconvenient to use compressed air purge pipes of the same diameter for purge depending on the different purge areas.

[0007] Moreover, it is difficult to maintain air tightness by blowing using the traditional manual fixing method.

[0008] In summary, it is extremely inconvenient to perform purging in the conventional manner.

[0009] After searching, no public documents of the prior art that are identical or similar to the present utility model were found. Utility Model Content

[0010] The purpose of the utility model is to overcome the shortcomings of the prior art and to propose a switching mechanism for a compressed air blowing device which has a simple structure, is easy to use, can be quickly installed, is easy to carry and has strong airtightness, which can improve the work efficiency of daily blowing work and ensure the personal safety of the staff.

[0011] The utility model solves the practical problem by adopting the following technical solutions:

[0012] A conversion mechanism for a compressed air purge device comprises: a purge device conversion joint and a purge pipe quick connector; the purge device conversion joint comprises a threaded connector and an extension tube, one end of the threaded connector is connected to the external thread on the compressed air needle valve, and the other end is welded with the extension tube, three internal threaded holes of different diameters are provided on the extension tube, one end of the purge pipe quick connector is connected to the extension tube through the internal threaded hole, and the other end is connected to the purge pipe.

[0013] Moreover, the purge device adapter has a built-in threaded hole, and the compressed air needle valve has an external thread, and the two are spirally installed.

[0014] Moreover, the outer surface of the adapter of the purge device is a regular hexagon.

[0015] Moreover, the purge pipe quick connector is a hollow cylindrical structure, one end of which is provided with an external thread for connection with the extension tube; and the other end is provided with a self-locking mechanism.

[0016] Moreover, the self-locking mechanism is a cylindrical structure, and a plurality of elastic protrusions are arranged at intervals along the inner wall of the cylinder.

[0017] Moreover, the outer surface of the self-locking mechanism is a regular hexagon.

[0018] Advantages and beneficial effects of the utility model:

[0019] 1. The compressed air purge device adapter of the utility model is small in size, easy to carry, use and keep. When in use, it is only necessary to spirally install the purge device adapter with the external thread of the compressed air needle valve, which is simple and convenient, saves time and effort, and greatly improves work efficiency.

[0020] 2. The compressed air purge device adapter of the utility model replaces the previous manual purge method. The purge device adapter is screwed with the external thread of the compressed air needle valve, and then the purge pipe quick connector is screwed with the internal thread hole on the extension tube. The purge pipe is inserted by pressing, and the elastic protrusion of the self-locking mechanism locks the purge pipe. After the installation is completed, only one person needs to hold the purge pipe to complete the purge work, which liberates productivity. At the same time, the compressed air extraction process is more firmly connected, and there is no need to manually press to extract air, which reduces the possibility of personal injury.

[0021] 3. The purge device adapter of the compressed air purge device adapter mechanism of the utility model is installed with a threaded spiral and the compressed air taking needle valve. The purge device adapter has a regular hexagonal shape so that it can be tightened with a wrench to maintain good air tightness during the purge process.

[0022] 4. The compressed air purge device adapter mechanism of the utility model welds an extension tube on the purge device adapter, and three internal threaded holes of different diameters are provided on the extension tube to facilitate installation of purge tubes of different diameters. Not only can the diameter of the purge tube be selected according to different purge areas, but three persons can also perform the purge work at the same time, thus greatly improving work efficiency.

[0023] 5. The extension tube of the compressed air purge device adapter mechanism of the utility model is equipped with a purge tube quick connector, and the purge tube quick connector is equipped with a self-locking mechanism. After installation, the elastic protrusion of the self-locking mechanism clamps the purge tube, which can not only fix the purge tube, but also make the air tightness of the entire mechanism more rigorous. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure assembly of the utility model;

[0025] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0026] Figure 3 It is a front view of the quick connector of the utility model;

[0027] Figure 4 It is a top view of the quick connector of the utility model.

[0028] Description of reference numerals:

[0029] 1-compressed air needle valve; 2-external thread; 3-purge device adapter; 4-extension tube; 5-internal thread hole; 6-purge tube quick connector; 7-self-locking mechanism; 8-elastic protrusion; 9-purge tube; DETAILED DESCRIPTION

[0030] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0031] A switching mechanism for a compressed air purge device, such as Figure 1 and Figure 2 As shown, it includes: a purge device adapter 3 and a purge pipe quick connector 6; the purge device adapter 3 includes a threaded connector and an extension tube 4, one end of the threaded connector is connected to the external thread 2 on the compressed air needle valve 1, and the other end is welded with the extension tube 4, three internal threaded holes 5 of different diameters are opened on the extension tube 4, one end of the purge pipe quick connector 6 is connected to the extension tube 4 through the internal threaded hole 5, and the other end is connected to the purge pipe 9.

[0032] In this embodiment, the purge device adapter 3 has a built-in threaded hole, and the compressed air needle valve 1 has an external thread 2, and the two are spirally installed.

[0033] In this embodiment, the outer surface of the purge device adapter 3 is a regular hexagon.

[0034] In this embodiment, the purge pipe quick connector 6 is a hollow cylindrical structure. Figure 3 and Figure 4 As shown, one end is provided with an external thread for connecting with the extension tube; the other end is provided with a self-locking mechanism 7.

[0035] In this embodiment, the self-locking mechanism 7 is a cylindrical structure, and a plurality of elastic protrusions 8 are arranged at intervals along the inner wall of the cylinder. The elastic protrusions are made of rubber material.

[0036] In this embodiment, the outer surface of the self-locking mechanism is a regular hexagon, so that it can be tightened with a wrench to ensure good airtightness during the purging process.

[0037] The purge tube 9 is installed by pressing the self-locking mechanism 7, and the self-locking mechanism 7 is released, and the elastic protrusion 8 clamps the purge tube 9. The installation of the adapter of the compressed air purge device can be completed, which is very fast and convenient.

[0038] The installation process of the utility model is:

[0039] A compressed air needle valve 1 is distributed on site. The purge device adapter 3 is screwed onto the external thread 2 of the compressed air needle valve 1, and then the purge pipe quick connector 6 is screwed onto the internal thread hole 5 of the extension tube 4 on the purge device adapter 3. The purge pipe 9 is inserted by pressing, and the elastic protrusion 8 of the self-locking mechanism 7 locks the purge pipe 9, and the installation of the utility model is completed.

[0040] The working process of the utility model is:

[0041] After the utility model is installed, the compressed air needle valve 1 is opened, and the compressed air enters the extension tube 4 through the purge device adapter 3, and then purges through the purge tube 9 connected by the purge tube quick connector 6. Since the opening diameters of the internal threaded holes 5 on the extension tube 4 are different, the diameters of the connected purge tubes 9 are different, and the purge areas are also different. During use, according to the actual situation, a purge tube with a suitable diameter is selected for use, so that the purge work can be carried out quickly and smoothly. Only one person is required to operate the whole work.

[0042] The working principle of the utility model is:

[0043] The adapter mechanism of the new compressed air purge device of the utility model is spirally installed with the compressed air needle valve thread. The threaded connector adopts a hexagonal shape, which is convenient for using tools to tighten the connection. The threaded connector 3 is also connected to the extension tube 4. The extension tube has three internal threaded holes 5 with different diameters. According to the diameters, purge pipe quick connectors 6 with different diameters are equipped. The two are spirally installed, so that the number of connectors and the diameter specifications can be changed from one to many, providing more choices for carrying out various purge operations.

[0044] The extension tube 4 is also screw-mounted with the purge tube quick connector 6 through its internal thread 5, which is very firm. The purge tube quick connector 6 has a self-locking mechanism 7, which connects the purge tube very tightly and has good air tightness.

[0045] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A switching mechanism for a compressed air purge device, characterized in that: include: A purge device adapter and a purge tube quick connector; the purge device adapter includes a threaded connector and an extension tube, one end of the threaded connector is connected to the external thread on the compressed air needle valve, and the other end is welded with an extension tube, on which three internal threaded holes of different diameters are provided, one end of the purge tube quick connector is connected to the extension tube through the internal threaded hole, and the other end is connected to the purge tube.

2. The adapter mechanism for a compressed air purge device according to claim 1, characterized in that: The purge device adapter has a built-in threaded hole, and the compressed air needle valve has an external thread, and the two are spirally installed.

3. The adapter mechanism for a compressed air purge device according to claim 1, characterized in that: The outer surface of the purge device adapter is a regular hexagon.

4. The adapter mechanism for a compressed air purge device according to claim 1, characterized in that: The purge pipe quick connector is a hollow cylindrical structure, one end of which is provided with an external thread for connection with the extension tube, and the other end of which is provided with a self-locking mechanism.

5. The adapter mechanism for a compressed air purge device according to claim 4, characterized in that: The self-locking mechanism is a cylindrical structure, and a plurality of elastic protrusions are arranged at intervals along the inner wall of the cylinder.

6. The adapter mechanism for a compressed air purge device according to claim 4, characterized in that: The outer surface of the self-locking mechanism is a regular hexagon.

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