Double-screw double-stage compression compressor

Abstract

The utility model relates to the technical field of screw compressors, and discloses a double-screw double-stage compression compressor which comprises two supports and a filter plate, the tops of the two supports are fixedly connected with a shell, the top of the shell is fixedly connected with an air inlet, the front sides of the supports are fixedly connected with an air outlet pipe, and the air outlet pipe is fixedly connected with an air inlet. A plurality of clamping strips are slidably connected to the interior of the filter plate, protruding blocks are fixedly connected to the tops of the clamping strips, a rotary disc is rotatably connected to the top of the filter plate, a plurality of arc grooves are formed in the outer portion of the rotary disc, a rotary knob is fixedly connected to the top of the rotary disc, and a rotating assembly used for continuously increasing lubricating oil is arranged in the support. According to the utility model, the filter plate is additionally arranged in the air inlet, so that external air containing impurities is prevented from entering the compressor, scratching the surface of the screw rod and influencing the compression effect, and the internal rotating assembly can drive the eccentric wheel to periodically extrude the crusty pancake and lubricate the screw rod, so that the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of screw compressors, in particular to a twin-screw two-stage compression compressor. Background Art

[0002] A twin-screw, two-stage compressor is an advanced air compression device. It primarily consists of a pair of intermeshing helical rotors (male and female), a housing, a drive unit, a cooling system, and a lubrication system. Compared to traditional single-stage compressors, two-stage compressors offer higher compression efficiency, greater airflow, and more stable performance. They are widely used in industries such as industry, manufacturing, and construction, providing compressed air for various pneumatic equipment and processes.

[0003] In the prior art, air enters the first-stage suction chamber of the compressor through the air intake filter. As the male and female rotors rotate, the closed volume formed by the rotor teeth and the casing gradually increases, generating negative pressure, which draws air into the teeth and the grooves. However, in the prior art, since the inhaled air often contains impurities, it is easy to cause damage to the original components inside the compressor. Therefore, a twin-screw two-stage compression compressor is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a twin-screw two-stage compression compressor, which aims to improve the problem in the prior art that the air at the air inlet contains impurities that cause damage to the interior of the compressor.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A twin-screw two-stage compression compressor includes two brackets and a filter plate. The tops of the two brackets are fixedly connected to the outer shell, the top of the outer shell is fixedly connected to the air inlet, the front side of the bracket is fixedly connected to the air outlet pipe, the inside of the filter plate is slidably connected to a plurality of clips, the top of the clips is fixedly connected to a protrusion, the top of the filter plate is rotatably connected to a turntable, the outside of the turntable is provided with a plurality of arc grooves, the top of the turntable is fixedly connected to a knob, and the inside of the bracket is provided with a rotating component for continuously adding lubricating oil.

[0007] As a further description of the above technical solution:

[0008] The outside of the protrusion contacts the inside of the arc groove, and the outsides of the plurality of clamping strips are engaged with the inside of the air inlet.

[0009] As a further description of the above technical solution:

[0010] The rotating assembly includes two screw shafts 1, the outer portions of the two screw shafts 1 are rotatably connected to the interior of the shell, and the interior of the shell is rotatably connected to two screw shafts 2.

[0011] As a further description of the above technical solution:

[0012] An eccentric wheel is fixedly connected to the outside of one of the screw shafts.

[0013] As a further description of the above technical solution:

[0014] The inner top end of the shell is rotatably connected to a rotating plate, and the top of the rotating plate is fixedly connected to an oil-fried naan.

[0015] As a further description of the above technical solution:

[0016] The inner top end of the shell is fixedly connected to two fixing columns, and the outer portion of the fixing columns is sleeved with a spring.

[0017] As a further description of the above technical solution:

[0018] The top of the spring is fixedly connected to the inner top of the shell, and the bottom of the spring is fixedly connected to the top of the rotating plate.

[0019] As a further description of the above technical solution:

[0020] Two circular holes are provided inside the rotating plate, and the outer sides of the fixing columns are in contact with the inner sides of the circular holes.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the arc groove is rotated by rotating the turntable, and the rotation of the arc groove causes the protrusion to move accordingly, thereby driving multiple clamping strips to slide toward the far side. The sliding clamping strips are engaged with the inside of the air inlet to complete the fixation of the filter plate, reduce impurities in the compressor air, and improve the compression efficiency.

[0023] 2. In the utility model, the rotation of the screw shaft 1 drives the eccentric wheel to rotate, squeezing the rotating plate at the top, thereby driving the rotating plate to rotate upward to squeeze the oil, squeezing out the lubricating oil, lubricating the screw shaft 1 and the screw shaft 2, reducing wear and extending the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of the twin-screw two-stage compression compressor proposed in the present invention;

[0025] Figure 2This is a schematic diagram of the filter plate structure of the twin-screw two-stage compression compressor proposed in the present invention;

[0026] Figure 3 This is a schematic diagram of the shell structure of the twin-screw two-stage compression compressor proposed in the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Bracket; 2. Housing; 3. Air inlet; 4. Filter plate; 5. Air outlet duct; 6. Clip; 7. Bump; 8. Turntable; 9. Arc groove; 10. Knob; 11. Screw shaft 1; 12. Screw shaft 2; 13. Eccentric wheel; 14. Rotating plate; 15. Round hole; 16. Fixing column; 17. Spring; 18. Oil naan. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1 The utility model provides an embodiment of a twin-screw two-stage compression compressor, comprising two brackets 1 and a filter plate 4. The two brackets 1 are made of high-strength steel metal material, have excellent load-bearing capacity and stability, and can provide solid support for the entire compressor. The tops of the two brackets 1 are fixedly connected to a shell 2. The shell 2 is usually made of thick stainless steel plates. Its shape is reasonably designed, which can not only accommodate the core components of the compressor, but also provide good protection for the internal components to prevent external factors such as dust and moisture from interfering with the normal operation of the compressor. The top of the shell 2 is fixedly connected to an air inlet 3. The air inlet 3 is usually cylindrical, and its diameter ensures that it can meet the air intake requirements of the compressor under different working conditions. The interior of the air inlet 3 is usually provided with a guide structure, which can guide air smoothly into the interior of the compressor, reducing air flow resistance and turbulence. The front side of the bracket 1 is fixedly connected to an air outlet pipe 5. The outlet of the air outlet pipe 5 is provided with a flange joint to facilitate connection with the external piping system. The interior of the air outlet pipe 5 is usually smooth and flat to reduce the pressure loss of compressed air during transportation.

[0032] Reference Figures 1 to 2The filter plate 4 is internally slidably connected to multiple clips 6. The sliding structure of the clips 6 allows them to move flexibly within the filter plate 4, engaging and disengaging with the air inlet 3. The clips 6 are specially surface-treated to enhance their wear and corrosion resistance, ensuring excellent performance over long-term use. A cylindrical bump 7 is fixed to the top of the clips 6. This bump 7 cooperates with subsequent components to control the sliding of the clips 6. The top of the filter plate 4 is rotatably connected to a turntable 8, which is usually made of sturdy plastic, has a circular shape, and smooth edges for easy manual operation. A rotating shaft is provided in the center of the turntable 8, which cooperates with the bearings on the filter plate 4 so that the turntable 8 can rotate smoothly. A plurality of arc grooves 9 are provided on the outside of the turntable 8. The shape of these arc grooves 9 is arc-shaped and can perfectly cooperate with the protrusions 7. When the turntable 8 rotates, the arc grooves 9 will push the protrusions 7 to move, thereby driving the card strip 6 to slide in the filter plate 4. A knob 10 is fixedly connected to the top of the turntable 8. The knob 10 is made of plastic material and its shape is convenient for the user to hold and rotate it by hand. The surface of the knob 10 is provided with anti-slip grooves to increase friction and prevent hand slippage during operation. A rotating component for continuously adding lubricating oil is provided inside the bracket 1. The outside of the protrusion 7 contacts the inside of the arc groove 9, and the outside of the multiple clips 6 are engaged with the inside of the air inlet 3. This engagement method enables the filter plate 4 to be firmly installed on the air inlet 3, preventing the filter plate 4 from loosening or falling off during the operation of the compressor.

[0033] Reference Figures 3 and 4The rotating assembly includes two screw shafts 11. The outer parts of the two screw shafts 11 are rotatably connected to the inner part of the shell 2. The two screw shafts 11 are usually made of high-strength metal materials, are cylindrical, have smooth surfaces and have precise threads. The housing 2 is internally rotatably connected to two spiral shafts 12. The function of the spiral shafts 12 is to cooperate with the screw shaft 11 so that air is continuously pushed toward the exhaust port during the compression process. An eccentric wheel 13 is fixedly connected to the outside of one of the screw shafts 11. This eccentric wheel 13 is circular, but its center does not coincide with the axis of the screw shaft 11, thereby generating eccentric motion and periodically squeezing the subsequent structure. The top end of the housing 2 is rotatably connected to a rotating plate 14. The top of the rotating plate 14 is fixedly connected to an oil naan 18. When the rotating plate 14 moves, the oil naan 18 is squeezed or stretched, thereby squeezing out the internal lubricating oil and delivering it to the area that needs lubrication. The top end of the housing 2 is internally fixed to two fixed columns 16. The fixed columns 16 are made of stainless steel, are cylindrical, have a smooth surface, and have a certain strength. The function of the fixed columns 16 is to provide support and guidance for the rotating plate 14, ensuring that the rotating plate 14 maintains a stable position and direction during movement. A spring 17 is sleeved on the outside of the fixed column 16, and the top of the spring 17 is fixedly connected to the inner top of the shell 2, and the bottom of the spring 17 is fixedly connected to the top of the rotating plate 14. When the rotating plate 14 is displaced by the eccentric wheel 13 and other components, the spring 17 will be compressed or stretched, generating a reverse elastic force, prompting the rotating plate 14 to return to its initial position. Two circular holes 15 are opened inside the rotating plate 14, and the outside of the fixed column 16 is in contact with the inside of the circular hole 15. Due to the rotation of the rotating plate 14, the activity space of the fixed column 16 becomes larger, and the opening of the circular hole 15 increases the activity space for the fixed column 16.

[0034] Working principle: First, the staff places the filter plate 4 inside the air inlet 3, and drives the arc groove 9 to rotate by rotating the turntable 8. At this time, the rotation of the arc groove 9 produces corresponding movement on the protrusion 7, thereby driving multiple clips 6 to slide to the far side. The clips 6 slide out and engage the inside of the air inlet 3 to complete the fixation of the filter plate 4. The filter plate 4 can effectively prevent dust, particles, rust and other impurities in the air from entering the compressor. If these impurities enter the compressor, they may cause wear on the surfaces of key components such as the screw, bearings, and cylinders, reducing the working efficiency and service life of the compressor. For example, fine sand entering the screw gap may scratch the screw surface, resulting in a decrease in the sealing of the compression chamber, thereby affecting the compression performance.

[0035] Secondly, by turning on the power of the compressor, the two internal screw shafts 11 and spiral shaft 2 12 are driven to rotate, and the rotation of the screw shaft 11 drives the eccentric wheel 13 to rotate, periodically squeezing the rotating plate 14 on the top, thereby driving the rotating plate 14 to rotate upward to squeeze the oil naan 18, so that the lubricating oil inside the oil naan 18 is squeezed out, lubricating the screw shaft 11 and spiral shaft 2 12. When the eccentric wheel 13 rotates to the bottom, the reaction force of the spring 17 drives the rotating plate 14 to complete the rotation and reset, so as to carry out the next rotation and extrusion. In the absence of good lubrication, the friction between the screw and the casing may cause wear on the screw surface, increase the gap, and reduce the compression efficiency. After adding the lubricating oil extrusion mechanism, the lubricating oil can be more effectively delivered to key moving parts such as the screw and bearings, forming a thicker and more uniform oil film, reducing direct friction between parts, reducing the degree of wear, and extending the service life of the compressor.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A twin-screw two-stage compressor, comprising two supports (1) and a filter plate (4), characterized in that: The tops of the two brackets (1) are fixedly connected to a housing (2), the top of the housing (2) is fixedly connected to an air inlet (3), the front side of the bracket (1) is fixedly connected to an air outlet pipe (5), the interior of the filter plate (4) is slidably connected to a plurality of clips (6), the top of the clips (6) is fixedly connected to a protrusion (7), the top of the filter plate (4) is rotatably connected to a turntable (8), the outside of the turntable (8) is provided with a plurality of arc grooves (9), the top of the turntable (8) is fixedly connected to a knob (10), and the interior of the bracket (1) is provided with a rotating component for continuously adding lubricating oil.

2. The twin-screw two-stage compression compressor according to claim 1, characterized in that: The outside of the protrusion (7) contacts the inside of the arc groove (9), and the outsides of the plurality of clamping strips (6) are engaged with the inside of the air inlet (3).

3. The twin-screw two-stage compression compressor according to claim 1, characterized in that: The rotating assembly comprises two screw shafts (11), the outer portions of the two screw shafts (11) are rotatably connected to the interior of the housing (2), and the interior of the housing (2) is rotatably connected to two screw shafts (12).

4. The twin-screw two-stage compression compressor according to claim 3, characterized in that: An eccentric wheel (13) is fixedly connected to the outside of one of the screw shafts (11).

5. The twin-screw two-stage compression compressor according to claim 1, characterized in that: The inner top end of the housing (2) is rotatably connected to a rotating plate (14), and the top of the rotating plate (14) is fixedly connected to an oil-fried bread (18).

6. The twin-screw two-stage compression compressor according to claim 5, characterized in that: Two fixing columns (16) are fixedly connected to the inner top end of the housing (2), and the outer portion of the fixing columns (16) is provided with a spring (17).

7. The twin-screw two-stage compression compressor according to claim 6, characterized in that: The top of the spring (17) is fixedly connected to the inner top of the housing (2), and the bottom of the spring (17) is fixedly connected to the top of the rotating plate (14).

8. The twin-screw two-stage compression compressor according to claim 6, characterized in that: Two circular holes (15) are provided inside the rotating plate (14), and the outside of the fixing column (16) is in contact with the inside of the circular holes (15).

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