Compression device for lower-stage piston ring in high-pressure air compressor cylinder

Abstract

The utility model discloses a compression device for a lower-stage piston ring in a high-pressure air compressor cylinder, which comprises a guide cylinder, a guide roller ejector rod, an adjusting screw rod and a steel cable tie, and a guide roller end of the guide roller ejector rod is arranged in an inner cavity of the guide cylinder. One end of the adjusting screw penetrates through a through hole in the bottom of the guide cylinder and then abuts against the guide roller end of the guide roller ejector rod, and a steel rolling belt penetrates into mounting holes in the two sides of the guide cylinder through an air inlet and outlet valve hole of the air compressor body to form a steel belt ring. According to the compression device for the lower-stage piston ring in the high-pressure air compressor cylinder, when the upper-stage piston ring and the lower-stage piston ring are compressed, only one person is needed for operation, time and labor are saved, installation precision is high, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure air compressor cylinders, and in particular relates to a compression device for a lower-stage piston ring in a high-pressure air compressor cylinder. Background Art

[0002] The V-3 / 350 high-pressure air compressor has two upper and lower stages that share a common cylinder block. The piston rings must be compressed synchronously during assembly before they can be installed. The lower cylinder diameter is smaller than the upper cylinder diameter, and the piston rings are installed in a closed space. The installation space is narrow, making each installation extremely inconvenient. The piston rings can only be compressed and installed using the inlet and exhaust valve ports. The current operating method requires two people to use a thin steel chisel to push the piston rings through the inlet and exhaust valve ports to compress them. At the same time, another person is required to compress the piston rings of the upper cylinder and illuminate the cylinder at the same time. Multiple people must work together to install the piston rings, and they must ensure that the piston ring openings are staggered. Therefore, the installation process requires a high level of coordination and skill from the installer, and is time-consuming and labor-intensive. Installation on an air compressor is particularly inconvenient. Summary of the Invention

[0003] The purpose of the utility model is to solve the above technical problems and provide a compression device for the lower piston ring in the cylinder of a high-pressure air compressor, which is easy to operate and saves time and effort.

[0004] To achieve the above-mentioned purpose, the utility model provides a compression device for the lower-stage piston ring in the cylinder of a high-pressure air compressor, comprising a guide cylinder, a guide roller push rod, an adjusting screw, and a steel tie. The guide roller end of the guide roller push rod is built into the inner cavity of the guide cylinder, and one end of the adjusting screw passes through the through hole at the bottom of the guide cylinder until it abuts against the guide roller end of the guide roller push rod. The steel rolled strip passes through the inlet and exhaust valve holes of the air compressor body and penetrates into the mounting holes on both sides of the guide cylinder to form a steel tie ring.

[0005] Furthermore, an arc-shaped groove is opened at the bottom of the guide cylinder along the radial direction of the guide cylinder, which penetrates the wall of the guide cylinder. The half-thread block is built into the arc-shaped groove and one end of the half-thread block is hinged to the guide cylinder through a positioning pin, and the other end of the half-thread block extends from the arc-shaped groove.

[0006] Furthermore, the diameter direction of the half-thread block is in the same direction as the diameter direction of the arc groove, the depth of the arc groove is not less than the diameter of the half-thread block, and the thickness of the arc groove is slightly approximately the thickness of the half-thread block; when the half-thread block is opened, the thread of the half-thread block is disengaged from the thread of the adjusting screw, thereby realizing coarse adjustment of the adjusting screw; when the half-thread block is closed, the thread of the half-thread block cooperates with the thread of the adjusting screw, thereby realizing fine adjustment of the adjusting screw.

[0007] Furthermore, the arc-shaped groove and the through hole are arranged in direct correspondence.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the compression device for the lower piston ring in the cylinder of a high-pressure air compressor of the present invention only requires one person to operate when compressing the upper and lower piston rings, which saves time and effort, and has high installation accuracy and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the compression device for the lower piston ring in the cylinder of a high-pressure air compressor of the utility model;

[0010] Figure 2 for Figure 1 Schematic diagram of usage;

[0011] Figure 3 for Figure 2 Diagram of the middle half of the tooth wire block in closed state;

[0012] Figure 4 for Figure 2 The middle half of the thread block is being opened. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 The compression device for the lower piston ring in the cylinder of the high-pressure air compressor includes a guide cylinder 4, a guide roller push rod 5, an adjusting screw 8, a steel tie 3 and a half-thread block 6. The guide roller end of the guide roller push rod 5 is built into the inner cavity of the guide cylinder 4. One end of the adjusting screw 8 passes through the through hole 10 at the bottom of the guide cylinder 4 until it rests on the guide roller end of the guide roller push rod 5. The steel rolled strip 3 passes through the intake and exhaust valve holes of the air compressor body and penetrates into the mounting holes 9 on both sides of the guide cylinder 4 to form a steel tie ring. The bottom of the guide cylinder 4 is provided with an arcuate groove 11 which penetrates the wall of the guide cylinder 4 along the radial direction of the guide cylinder 4, and the arcuate groove 11 is arranged in direct correspondence with the through hole 10; the half-thread block 6 is built into the arcuate groove 11 and one end of the half-thread block 6 is hinged to the guide cylinder 4 by a locating pin 7, and the other end of the half-thread block 6 extends out of the arcuate groove 11; the diameter direction of the half-thread block 6 (i.e., the front-to-back direction in the figure) is in the same direction as the diameter direction of the arcuate groove 11, the depth of the arcuate groove 11 (i.e., the up-down direction in the figure) is not less than the diameter of the half-thread block 6, and the thickness of the arcuate groove 11 (i.e., the left-right direction in the figure) is slightly greater than the thickness of the half-thread block 6. When the half-thread block 6 is opened, the thread of the half-thread block 6 disengages from the thread of the adjusting screw, thereby achieving coarse adjustment of the adjusting screw; when the half-thread block 6 is closed, the thread of the half-thread block 6 cooperates with the thread of the adjusting screw 8, thereby achieving fine adjustment of the adjusting screw 8.

[0015] like Figures 2-4 The working principle shown is as follows:

[0016] Install the guide roller end of the guide roller push rod 5 into the guide cylinder 4, and pass the steel strip 3 through the intake and exhaust valve holes into the mounting holes on both sides of the guide cylinder 4 and tighten the steel strip so that the diameter of the steel strip is larger than the maximum outer diameter of the lower piston ring.

[0017] The piston equipped with the upper piston ring and the lower piston ring 2 is installed into the cylinder so that the lower piston ring 2 is close to the lower cylinder mouth 1; hold the tooling assembly to make the steel tie 3 close to the lower cylinder mouth and then adjust the adjusting screw 8 so that the top rod end of the guide roller push rod 5 supports the lower piston ring 2, open the half-open wire block 6, hold the guide cylinder 4, push the adjusting screw 8, and pre-tighten the steel tie; then push back the half-open wire block 6, and adjust the screw 8 for secondary tightening and fine adjustment. When the steel tie 3 presses the lower piston ring 2, slightly rotate the tooling assembly to make the lower piston ring easier to compress.

[0018] After the lower piston ring 2 is compressed into place, compress the exposed upper piston ring and tap the piston lightly with a bakelite hammer. After the lower piston ring 2 has entered the lower cylinder port by 2 mm, adjust the adjusting screw 8 to loosen the steel tie 3 until the resulting steel tie 3 diameter is larger than the maximum outer diameter of the lower piston ring. Repeat this process until all lower piston rings have entered the lower cylinder port. Then, disengage the steel tie connector and remove the steel tie from the intake and exhaust valve ports to complete the installation.

Claims

1. A compression device for a lower-stage piston ring in a high-pressure air compressor cylinder, characterized in that: The invention comprises a guide cylinder (4), a guide roller push rod (5), an adjusting screw (8), and a steel tie (3). The guide roller end of the guide roller push rod (5) is built into the inner cavity of the guide cylinder (4). One end of the adjusting screw (8) passes through a through hole (10) at the bottom of the guide cylinder (4) until it abuts against the guide roller end of the guide roller push rod (5). The steel tie (3) passes through the inlet and outlet valve holes of the air compressor body and penetrates into the mounting holes (9) on both sides of the guide cylinder (4) to form a steel tie ring.

2. The compression device for the lower piston ring in the cylinder of a high-pressure air compressor according to claim 1, characterized in that: The bottom of the guide cylinder (4) is provided with an arcuate groove (11) penetrating the wall of the guide cylinder (4) along the radial direction of the guide cylinder (4); the half-thread block (6) is built into the arcuate groove (11) and one end of the half-thread block (6) is hinged to the guide cylinder (4) through a positioning pin (7); the other end of the half-thread block (6) extends out of the arcuate groove (11).

3. The compression device for the lower piston ring in the cylinder of a high-pressure air compressor according to claim 2, characterized in that: The diameter direction of the half-thread block (6) is in the same direction as the diameter direction of the arc groove (11), the depth of the arc groove (11) is not less than the diameter of the half-thread block (6), and the thickness of the arc groove (11) is slightly about the thickness of the half-thread block (6); when the half-thread block (6) is opened, the thread of the half-thread block (6) is separated from the thread of the adjusting screw, thereby realizing the coarse adjustment of the adjusting screw; when the half-thread block (6) is closed, the thread of the half-thread block (6) is matched with the thread of the adjusting screw (8), thereby realizing the fine adjustment of the adjusting screw (8).

4. The compression device for the lower piston ring in the cylinder of a high-pressure air compressor according to claim 2, characterized in that: The arc-shaped groove (11) and the through hole (10) are arranged in direct correspondence.

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