Pressure dividing device of split type down-the-hole drill air compressor

Abstract

The utility model relates to the technical field of pressure containers, in particular to a pressure dividing device of a split type down-the-hole drill air compressor, which comprises a pressure dividing bin, an air inlet fixedly connected with the front end of the pressure dividing bin, an installation cover fixedly installed at the front end of the air inlet, an air inlet pipe fixedly installed at the front end of the installation cover, and an air outlet pipe fixedly connected with the rear end of the pressure dividing bin. A pressure release valve is fixedly installed in the air outlet pipe, a plurality of pressure dividing valves are fixedly installed on the outer wall of the pressure dividing bin, and a buffering assembly is installed at the front end of the inner wall of the pressure dividing bin. The buffer assembly comprises a mounting block, a mounting seat, a buffer spring, a stop block and a conical block, the mounting block is fixedly connected to the front end of the outer wall of the partial pressure bin, the mounting seat is fixedly mounted at the rear end of the inner wall of the mounting block, and the buffer spring is fixedly mounted at the front end of the mounting seat. According to the utility model, gas impact force is buffered through the buffer assembly, parts are protected, partial pressure is stabilized, and impurities are filtered through the filter screen.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessels, and in particular to a pressure distribution device for a split-type down-the-hole drill air compressor. Background Technology

[0002] With social development, split-type down-the-hole drills have been widely used in engineering fields such as mining and tunnel excavation due to their high drilling efficiency. Split-type down-the-hole drills use air compressors to provide high-pressure gas to drive the down-the-hole drill bit. However, the pressure generated by the air compressor during operation is not always perfectly matched with the needs of the down-the-hole drill, and sometimes there is excess pressure. In order to make full use of this excess pressure and improve the efficiency and economic benefits of the equipment, a pressure dividing device needs to be added between the air compressor and the down-the-hole drill to rationally distribute and reuse the pressure.

[0003] Chinese utility model patent CN221628340U discloses a pressure-sharing device for a split-type down-the-hole (DHH) drill air compressor. This device, which connects to an external handheld rock drill bit between the air compressor and the DHH drill, diverts excess pressure for reuse. The pressure-sharing device supplies pressure to the external handheld rock drill bit via a pressure-sharing valve located on the pressure-sharing chamber, eliminating the need to purchase a separate air compressor for the handheld rock drill bit and reducing equipment procurement costs. The pressure-sharing device can be repeatedly welded for maintenance, simplifying the process. On-demand use improves construction efficiency. This utility model features a simple structure, convenient operation, and low cost, making it highly valuable for market promotion.

[0004] However, this patent does not have a buffer device at the air inlet inside the pressure chamber. When high-pressure gas enters the pressure chamber quickly, the lack of buffer will generate a large impact force, which may damage the internal components of the pressure chamber and shorten the service life of the equipment. At the same time, this impact force may also cause gas pressure fluctuations, affecting the stability and accuracy of the pressure distribution, and thus affecting the normal operation of external handheld rock drilling tools and other equipment, reducing construction efficiency. Utility Model Content

[0005] In view of this, the present invention provides a pressure distribution device for a split-type down-the-hole drilling rig air compressor. The main technical problem to be solved is: to solve the problem that the existing split-type down-the-hole drilling rig air compressor pressure distribution device has no buffer device at the air inlet of the pressure distribution chamber, which makes the internal components susceptible to impact damage and the gas pressure fluctuation affects the stability and accuracy of pressure distribution.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of pressure dividing device of split type down-the-hole drill air compressor, including pressure dividing bin, the front end of the pressure dividing bin is fixedly connected with air inlet, the front end of the air inlet is fixedly installed with mounting cover, the front end of the mounting cover is fixedly installed with air inlet pipe, the rear end of the pressure dividing bin is fixedly connected with air outlet pipe, the inside of the air outlet pipe is fixedly installed with pressure relief valve, the outer wall of the pressure dividing bin is fixedly installed with multiple pressure dividing valves, the inner wall front end of the pressure dividing bin is installed with buffer assembly;

[0007] The buffer assembly includes a mounting block, a mounting seat, a buffer spring, a stop block, and a tapered block. The mounting block is fixedly connected to the front end of the outer wall of the pressure dividing bin. The mounting seat is fixedly installed on the inner wall rear end of the mounting block. The buffer spring is fixedly installed on the front end of the mounting seat. The stop block is fixedly connected to the inside of the mounting block. The tapered block is fixedly installed on the front end of the buffer spring. The tapered block is located at the rear end of the stop block.

[0008] By adopting the above technical scheme, when high-pressure gas enters the pressure dividing bin and impacts the tapered block, the buffer spring is compressed, absorbing the impact force and playing a buffering role to protect the internal components of the pressure dividing bin.

[0009] As a further description of the above technical scheme: the buffer assembly further includes a connecting frame, a circular ring, and a through hole. The connecting frame is fixedly connected to the inner wall rear end of the mounting block. The circular ring is fixedly connected to the outer wall of the tapered block. The front end of the circular ring is in contact with the rear end of the stop block. The through hole is annularly formed in the inside of the circular ring.

[0010] By adopting the above technical scheme, the buffering process is further stabilized, and the gas can flow normally.

[0011] As a further description of the above technical scheme: the inside of the mounting cover is fixedly installed with a filter screen.

[0012] By adopting the above technical scheme, impurities in the gas entering the pressure dividing bin can be filtered, preventing impurities from entering the pressure dividing bin and external equipment, protecting the internal components of the equipment, and prolonging the service life of the equipment.

[0013] As a further description of the above technical scheme: the outer wall of the air inlet movably installs a rotating sleeve. The inner wall of the rotating sleeve is threadedly connected with the outer wall of the mounting cover.

[0014] By adopting the above technical scheme, the mounting and dismounting of the mounting cover are facilitated, and the filter screen can be replaced for maintenance operations.

[0015] As a further description of the above technical scheme: the inner wall of the rotating sleeve is fixedly connected with a movable ring. The outer wall of the air inlet is provided with a movable groove.

[0016] By adopting the technical scheme, the rotating sleeve is more stable during rotation, and the installation cover is prevented from deviating or shaking during installation and dismounting.

[0017] As a further description of the technical scheme, a sealing ring is fixedly installed between the air inlet and the installation cover.

[0018] By adopting the technical scheme, gas leakage is prevented, and normal operation of the pressure dividing device and accuracy of pressure distribution are ensured.

[0019] By adopting the technical scheme, the pressure dividing device of the split type roof bolter air compressor has at least the following beneficial effects:

[0020] 1. Compared with the prior art, the pressure dividing device of the split type roof bolter air compressor has the following beneficial effects: when high-pressure gas enters the pressure dividing chamber and impacts the conical block 06, the buffer spring 04 is compressed, the gas impact force is absorbed, and the impact on the internal components of the pressure dividing chamber is reduced. The internal components of the pressure dividing chamber are effectively protected, the service life of the equipment is prolonged, the gas pressure fluctuation is reduced, and the stability and accuracy of pressure division are improved.

[0021] 2. Compared with the prior art, the pressure dividing device of the split type roof bolter air compressor has the following beneficial effects: by setting the filter screen inside the installation cover, the gas is filtered through the filter screen before entering the pressure dividing chamber, and the impurities are intercepted. The impurities are effectively prevented from entering the pressure dividing chamber and the external equipment, the internal components of the equipment are protected, the equipment failure caused by impurities is reduced, and the service life of the equipment is prolonged.

[0022] 3. Compared with the prior art, the pressure dividing device of the split type roof bolter air compressor has the following beneficial effects: by setting the rotating sleeve, the inner wall of the rotating sleeve is threadedly connected with the outer wall of the installation cover, and the movable ring and the movable groove 0 are arranged, the rotating sleeve is rotated, and the installation cover and the air inlet are quickly connected or separated. The installation and dismounting of the installation cover are facilitated, the maintenance operation such as regular replacement of the filter screen is facilitated, and the convenience and efficiency of equipment maintenance are improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model provides a kind of pressure dividing device of split type roof bolter air compressor, as shown in the whole structure schematic diagram of the utility model;

[0024] Figure 2 The utility model provides a kind of pressure dividing device of split type roof bolter air compressor, as shown in the whole structure schematic diagram of the utility model;

[0025] Figure 3 For Figure 2 The utility model provides a kind of pressure dividing device of split type roof bolter air compressor, as shown in the whole structure schematic diagram of the utility model;

[0026] Figure 4 For Figure 2Amplification structure schematic diagram at B.

[0027] Legend:

[0028] 1, pressure dividing chamber; 2, air inlet; 3, mounting cover; 301, air inlet pipe; 4, air outlet pipe; 401, pressure relief valve; 5, pressure dividing valve; 6, buffer assembly; 601, mounting block; 602, connecting frame; 603, mounting seat; 604, buffer spring; 605, stop block; 606, tapered block; 607, circular ring; 608, through hole; 7, filter screen; 8, rotating sleeve; 9, movable ring; 10, movable groove; 11, sealing ring. DETAILED DESCRIPTION

[0029] Reference Figures 1-4 The utility model provides a kind of pressure dividing device of split type down-the-hole drill air compressor provided in the utility model: including pressure dividing chamber 1, the front end of pressure dividing chamber 1 is fixedly connected with air inlet 2, the front end of air inlet 2 is fixedly installed with mounting cover 3, mounting cover 3 is used to install filter screen 7 etc.

[0030] The buffer assembly 6 further comprises a connecting frame 602, a circular ring 607 and a through hole 608, the connecting frame 602 is fixedly connected to the rear end of the inner wall of the mounting block 601, the connecting frame 602 is used for connecting the mounting block 601 and the circular ring 607, and the position of the circular ring 607 is ensured to be stable, the circular ring 607 is fixedly connected to the outer wall of the conical block 606, the circular ring 607 is attached to the stop block 605, further stabilizing the movement of the conical block 606, the front end of the circular ring 607 is attached to the rear end of the stop block 605, and the through hole 608 is provided in the inner part of the circular ring 607 in a plurality of annular forms, so that the gas can pass through the circular ring 607 uniformly, and the normal circulation of the gas is ensured.

[0031] The inside of the mounting cover 3 is fixedly provided with a filter screen 7, the filter screen 7 is used for filtering impurities in the gas entering the pressure distribution chamber 1, and damage to the pressure distribution chamber 1 and the external equipment is prevented.

[0032] The outer wall of the gas inlet 2 is movably provided with a rotating sleeve 8, the inner wall of the rotating sleeve 8 is threadedly connected with the outer wall of the mounting cover 3, and the rotating sleeve 8 is threadedly connected with the mounting cover 3, so that the mounting and dismounting of the mounting cover 3 are facilitated, and the maintenance operation is facilitated.

[0033] The inner wall of the rotating sleeve 8 is fixedly provided with a movable ring 9, the outer wall of the gas inlet 2 is provided with a movable groove 10, and the movable ring 9 is matched with the movable groove 10, so that the rotating sleeve 8 is more stable during rotation, and the accuracy of the mounting and dismounting of the mounting cover 3 is ensured.

[0034] The sealing ring 11 is fixedly arranged between the gas inlet 2 and the mounting cover 3, the sealing ring 11 ensures the sealing performance of the connecting position of the gas inlet 2 and the mounting cover 3, prevents gas leakage, and ensures the normal operation of the pressure distribution device.

[0035] Working principle: in use, the high-pressure gas output by the air compressor enters the mounting cover 3 through the gas inlet pipe 301. In the process that the gas enters the mounting cover 3, the impurities in the gas are intercepted by the filter screen 7, and the filtered gas enters the pressure distribution chamber 1 through the gas inlet 2.

[0036] When the high-pressure gas enters the pressure distribution chamber 1, it first impacts the conical block 606, the conical block 606 is compressed under the action of the gas impact force, the buffer spring 604 absorbs the impact force of the gas, reduces the impact on the internal components of the pressure distribution chamber 1, at the same time, the circular ring 607 is separated from the stop block 605, the through hole 608 makes the gas pass uniformly, further stabilizes the buffering process, and ensures that the gas can enter the pressure distribution chamber 1 smoothly.

[0037] The gas in the pressure distribution chamber 1 is distributed in pressure by the plurality of pressure distribution valves 5, the demand of the handheld rock drill is adjusted, and the distributed gas is output to the corresponding equipment through the gas outlet pipe 4.

[0038] When the pressure in the pressure distribution bin 1 is too high, the pressure relief valve 401 is automatically opened to release the excess pressure, ensuring the safety of the pressure distribution bin 1 and the equipment.

[0039] When the filter screen 7 and other components need to be maintained, the rotating sleeve 8 is rotated, and since the inner wall of the rotating sleeve 8 is threadedly connected with the outer wall of the mounting cover 3 and the movable ring 9 cooperates with the movable groove 10, the rotating sleeve 8 drives the mounting cover 3 to separate from the air inlet 2 when it is rotated, facilitating the dismounting of the mounting cover 3 and the maintenance operation.

[0040] Finally, it should be noted that the above description is only the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure dividing device of a split type roof bolter air compressor, comprising a pressure dividing bin (1), characterized in that: The front end of the pressure distribution bin (1) is fixedly connected with an air inlet (2), the front end of the air inlet (2) is fixedly installed with a mounting cover (3), the front end of the mounting cover (3) is fixedly installed with an air inlet pipe (301), the rear end of the pressure distribution bin (1) is fixedly connected with an air outlet pipe (4), the inside of the air outlet pipe (4) is fixedly installed with a pressure relief valve (401), the outer wall of the pressure distribution bin (1) is fixedly installed with a plurality of pressure distribution valves (5), and the inner wall of the pressure distribution bin (1) is installed with a buffer assembly (6) at the front end. The buffer assembly (6) comprises a mounting block (601), a mounting seat (603), a buffer spring (604), a stop block (605) and a tapered block (606), the mounting block (601) is fixedly connected to the front end of the outer wall of the pressure distribution bin (1), the mounting seat (603) is fixedly installed on the inner wall of the rear end of the mounting block (601), the buffer spring (604) is fixedly installed on the front end of the mounting seat (603), the stop block (605) is fixedly connected to the inside of the mounting block (601), and the tapered block (606) is fixedly installed on the front end of the buffer spring (604).

2. The pressure dividing device of a split-in-hole drifter air compressor according to claim 1, characterized in that: The buffer assembly (6) further comprises a connecting frame (602), a circular ring (607) and a through hole (608), the connecting frame (602) is fixedly connected to the inner wall of the rear end of the mounting block (601), the circular ring (607) is fixedly connected to the outer wall of the tapered block (606), the front end of the circular ring (607) is attached to the rear end of the stop block (605), and the through hole (608) is annularly formed in the inside of the circular ring (607).

3. The pressure dividing device of a split-in-hole drifter air compressor according to claim 1, characterized in that: The inside of the mounting cover (3) is fixedly installed with a filter screen (7).

4. The pressure dividing device of a split-in-hole drifter air compressor according to claim 1, characterized in that: The outer wall of the air inlet (2) is movably installed with a rotating sleeve (8), and the inner wall of the rotating sleeve (8) is threadedly connected with the outer wall of the mounting cover (3).

5. The pressure dividing device of a split-in-hole drifter air compressor according to claim 4, characterized in that: The inner wall of the rotating sleeve (8) is fixedly connected with a movable ring (9), and the outer wall of the air inlet (2) is provided with a movable groove (10).

6. The pressure dividing device of a split-in-hole drifter air compressor according to claim 1, characterized in that: The air inlet (2) and the mounting cover (3) are fixedly installed with a sealing ring (11).

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