Air floatation piston for reciprocating compressor

Abstract

An air inlet pipe is arranged on the left side of an air cylinder in a communicated mode, an air outlet pipe is fixedly connected to the end, away from the air inlet pipe, of the air cylinder, a first flange plate is fixedly connected to the left end of the air cylinder, the air floating piston further comprises a piston mechanism, and the piston mechanism comprises a piston rod arranged in the air cylinder in a sleeved mode. The piston rod drives the piston head to move back and forth in the air cylinder so as to compress air, the abrasion-resistant ring is additionally arranged to avoid direct contact between the buffering head and the interior of the air cylinder so as to reduce friction force in the moving process, and meanwhile the piston head can drive the buffering cushion to move back and forth when moving to the bottom of the air cylinder. The piston head has certain inertia, the cushion can relieve collision force generated between the piston head and the right wall in the cylinder, deformation caused by collision between the piston head and the right side of the cylinder is prevented, and therefore the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, in particular to an air-floating piston for a reciprocating compressor. Background Art

[0002] Different from the traditional circulation theory, the circulation theory adopted by the acoustic energy compressor is a more efficient thermodynamic theory. With the continuous development of new technologies, acoustic energy compressors are increasingly valued by technicians. In existing compressors, the device structure is complex and is equipped with a regenerator. Friction is generated during operation, which increases power consumption and easily damages the body. An air suspension state design is adopted for the reciprocating motion of the piston. As an important component of the acoustic energy compressor, the research and development of the air floating structure is particularly important.

[0003] The application number is CN201922398216.9, which discloses a piston and a piston assembly, including a piston body, a cavity is provided on the top of the piston body, and a heat sink is slidably connected to the inner cavity of the cavity, an arc groove is provided on the bottom of the heat sink, and a heat dissipation hole is provided on the inner surface of the cavity, and the angle between the heat dissipation hole and the cross section of the piston body is an acute angle. The piston and the piston assembly, through the cooperation of the heat sink, the arc groove, the heat dissipation hole, the L-shaped stopper, the connecting rod and the pneumatic cylinder, enable the pneumatic cylinder to push and drive the heat sink to move up and down, bring external air into the cavity, and then squeeze the hot air in the piston body, and discharge the hot air through the heat dissipation hole, and by providing the arc groove, the heat sink can carry more external air, carry external cold air into the cavity of the piston body through the heat sink, and discharge the hot air in the cavity through the heat dissipation hole, so as to achieve a better heat dissipation effect and extend the service life of the piston body.

[0004] This arrangement lacks protection for the bottom of the piston. When the piston is compressed, the bottom of the piston collides with the bottom of the cavity. Under long-term collision, the bottom of the piston head and the bottom of the cavity are easily deformed, causing damage to the device. Utility Model Content

[0005] The utility model is realized by the following technical solutions:

[0006] A gas-floating piston for a reciprocating compressor comprises a cylinder, wherein the left side of the cylinder is connected to an air inlet pipe, the end of the cylinder away from the air inlet pipe is fixedly connected to an air outlet pipe, the left end of the cylinder is fixedly connected to a first flange, and further comprises: a piston mechanism, wherein the piston mechanism comprises a piston rod sleeved and arranged inside the cylinder, a docking hole is provided at the end of the piston rod away from the cylinder, a piston head is fixedly connected to the end of the piston rod away from the docking hole, and a buffer pad is fixedly connected to the end of the piston head away from the piston rod. This arrangement is to reduce the collision between the piston head and the cylinder when the device is compressed by the buffer pad, thereby protecting the cylinder and the piston head.

[0007] Furthermore; a plurality of grooves are provided on the outer wall of the piston head, a wear-resistant ring is fixedly connected inside the groove, the wear-resistant ring is in contact with the inner wall of the cylinder, a first sealing ring is fixedly connected inside the groove, the first sealing ring is located between the two wear-resistant rings, and the first sealing ring is in contact with the inner wall of the cylinder. This arrangement avoids direct contact between the piston head and the cylinder by adding a wear-resistant ring, reduces the friction generated when the piston head moves, and thereby increases the service life of the device.

[0008] Furthermore; a dustproof mechanism is arranged on the left side of the cylinder, and the dustproof mechanism includes a second flange plate contactingly arranged on the left side of the first flange plate, the first flange plate and the second flange plate are fixedly connected by bolts, and a second sealing ring is arranged between the first flange plate and the second flange plate. Such an arrangement ensures the sealing between the first flange plate and the second flange plate by the second sealing ring.

[0009] Furthermore; a conical tube is fixedly connected to the side of the second flange away from the first flange, a dust ring is fixedly connected to the inner wall of the conical tube away from the second flange, and the piston rod is slidably connected inside the conical tube. This arrangement uses the dust ring to prevent external dust from entering the cylinder, which increases the friction of the piston during movement and damages the device.

[0010] Furthermore, an adjustment mechanism is provided inside the inlet and outlet pipes, and the adjustment mechanism includes a screw threadedly connected to the inside of the outlet pipe, and the left end of the screw is fixedly connected to a baffle rod. This arrangement is to change the position of the baffle rod by loosening or tightening the screw and limit the baffle rod.

[0011] Furthermore, a third sealing ring is sleeved on one end of the stop rod close to the screw, and two one-way air outlet valves are connected to the outer wall of the air outlet pipe. This arrangement is to prevent gas from entering the cylinder through the one-way air outlet valve and changing the air pressure in the cylinder.

[0012] Furthermore, the third sealing ring is located on the right side of the one-way air outlet valve, and two one-way air outlet valves are provided. The one-way air outlet valves are symmetrically arranged with the air outlet pipe as the center. This arrangement is to adjust the flow rate of the air outlet through the baffle rod.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, the piston rod drives the piston head to move back and forth in the cylinder, thereby compressing the gas. The wear-resistant ring is added to avoid direct contact between the buffer head and the inside of the cylinder, thereby reducing the friction during movement. At the same time, when the piston head moves back and forth, it will drive the buffer pad to move back and forth. When moving to the bottom of the cylinder, the piston head has a certain inertia. The buffer pad can slow down the collision force between the piston head and the right wall inside the cylinder, preventing the piston head from colliding with the right side of the cylinder and causing deformation, thereby increasing the service life of the device. The first flange and the second flange are bolted together to facilitate the separation of the tapered tube and the cylinder in the later stage, thereby facilitating the maintenance of the device in the later stage. At the same time, a dust ring is set on the left side of the tapered tube, which can effectively block external dust from entering the cylinder and prevent the friction during the movement of the piston from increasing, resulting in damage to the device. The screw drives the stopper rod to move, changing the gap between the stopper rod and the valve port of the one-way air outlet valve, so that the air flow rate of the one-way air outlet valve outlet can be changed according to demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the new dust-proof mechanism of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the utility model regulating mechanism. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] A gas-floating piston for a reciprocating compressor comprises a cylinder 1, an air inlet pipe 11 is connected to the left side of the cylinder 1, an air outlet pipe 12 is fixedly connected to the end of the cylinder 1 away from the air inlet pipe 11, a first flange 13 is fixedly connected to the left end of the cylinder 1, and also comprises: a piston mechanism 2, the piston mechanism 2 comprises a piston rod 201 sleeved and arranged inside the cylinder 1, a docking hole 202 is opened at the end of the piston rod 201 away from the cylinder 1, a piston head 203 is fixedly connected to the end of the piston rod 201 away from the docking hole 202, and a buffer pad 204 is fixedly connected to the end of the piston head 203 away from the piston rod 201.

[0021] The second gear 204 is meshed with the left side of the first gear 203, and the inner wall of the second gear 204 is fixedly connected with a second rubber roller 205. The front and rear ends of the second rubber roller 205 are rotatably connected to the inner wall of the housing 1 and extend to the outside.

[0022] Among them, a plurality of grooves are opened on the outer wall of the piston head 203, and a wear-resistant ring 205 is fixedly connected inside the groove, and the wear-resistant ring 205 contacts the inner wall of the cylinder 1. A first sealing ring 206 is fixedly connected inside the groove, and the first sealing ring 206 is located between the two wear-resistant rings 205, and the first sealing ring 206 contacts the inner wall of the cylinder 1.

[0023] A dustproof mechanism 3 is arranged on the left side of the cylinder 1. The dustproof mechanism 3 includes a second flange 301 arranged in contact with the left side of the first flange 13. The first flange 13 and the second flange 301 are fixedly connected by bolts. A second sealing ring 304 is arranged between the first flange 13 and the second flange 301.

[0024] A conical tube 302 is fixedly connected to the side of the second flange 301 away from the first flange 13 , a dust ring 303 is fixedly connected to the inner wall of the conical tube 302 away from the second flange 301 , the piston rod 201 is slidably connected inside the conical tube 302 , and the dust ring 303 is in contact with the piston rod 201 .

[0025] An adjusting mechanism 4 is arranged inside the air outlet pipe 12 . The adjusting mechanism 4 comprises a screw 401 threadedly connected inside the air outlet pipe 12 . A blocking rod 402 is fixedly connected to the left end of the screw 401 .

[0026] A third sealing ring 403 is sleeved on one end of the blocking rod 402 close to the screw 401 , and a one-way air outlet valve 404 is connected to the outer wall of the air outlet pipe 12 .

[0027] The third sealing ring 403 is located on the right side of the one-way air outlet valve 404 . Two one-way air outlet valves 404 are provided. The one-way air outlet valves 404 are symmetrically arranged with the air outlet pipe 12 as the center.

[0028] When in use, the piston head 203 is driven to move back and forth in the cylinder 1 by the piston rod 201, thereby compressing the gas. The wear-resistant ring 205 is added to avoid direct contact between the piston head 203 and the inside of the cylinder 1, thereby reducing the friction during movement. At the same time, when the piston head 203 moves back and forth, it will drive the buffer pad 204 to move back and forth. When moving to the bottom of the cylinder 1, the piston head 203 has a certain inertia. The buffer pad 204 can slow down the collision force generated by the piston head 203 and the right wall inside the cylinder 1, preventing the piston head 203 from colliding with the right side of the cylinder 1 and causing deformation, thereby increasing The service life of the device, the first flange 13 and the second flange 301 are bolted together, which is convenient for the later separation of the tapered tube 302 and the cylinder 1, thereby facilitating the later maintenance of the device. At the same time, a dust ring 303 is set on the left side of the tapered tube 302, which can effectively block external dust from entering the cylinder 1 and prevent the friction force from increasing when the piston moves, causing damage to the device. The screw 401 is loosened and tightened, and the screw 401 drives the stop rod 402 to move, changing the gap between the stop rod 402 and the valve port of the one-way air outlet valve 404, so that the air flow rate at the outlet of the one-way air outlet valve 404 can be changed according to needs.

Claims

1. An air-floating piston for a reciprocating compressor, comprising a cylinder, wherein the left side of the cylinder is connected to an air inlet pipe, an end of the cylinder away from the air inlet pipe is fixedly connected to an air outlet pipe, and a first flange is fixedly connected to the left end of the cylinder, characterized in that: Also includes: The piston mechanism comprises a piston rod sleeved and arranged inside the cylinder, a docking hole is formed at one end of the piston rod away from the cylinder, a piston head is fixedly connected to one end of the piston rod away from the docking hole, and a buffer pad is fixedly connected to one end of the piston head away from the piston rod; A plurality of grooves are provided on the outer wall of the piston head, a wear-resistant ring is fixedly connected inside the groove, the wear-resistant ring contacts the inner wall of the cylinder, a first sealing ring is fixedly connected inside the groove, the first sealing ring is located between two wear-resistant rings, and the first sealing ring contacts the inner wall of the cylinder.

2. The air-floating piston for a reciprocating compressor according to claim 1, characterized in that: A dustproof mechanism is arranged on the left side of the cylinder, and the dustproof mechanism comprises a second flange plate contactingly arranged on the left side of the first flange plate, the first flange plate and the second flange plate are fixedly connected by bolts, and a second sealing ring is arranged between the first flange plate and the second flange plate.

3. The air-floating piston for a reciprocating compressor according to claim 2, characterized in that: A conical tube is fixedly connected to the side of the second flange away from the first flange, a dust ring is fixedly connected to the inner wall of the conical tube away from the second flange, the piston rod is slidably connected inside the conical tube, and the dust ring contacts the piston rod.

4. The air-floating piston for a reciprocating compressor according to claim 3, characterized in that: An adjusting mechanism is arranged inside the air outlet pipe, and the adjusting mechanism comprises a screw threadedly connected inside the air outlet pipe, and a blocking rod is fixedly connected to the left end of the screw.

5. The air-floating piston for a reciprocating compressor according to claim 4, characterized in that: A third sealing ring is sleeved on one end of the stop rod close to the screw, and a one-way air outlet valve is connected to the outer wall of the air outlet pipe.

6. The air-floating piston for a reciprocating compressor according to claim 5, characterized in that: The third sealing ring is located on the right side of the one-way air outlet valve. Two one-way air outlet valves are provided. The one-way air outlet valves are symmetrically arranged with the air outlet pipe as the center.

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