Piston type air compressor cylinder body capable of avoiding gas backflow

Abstract

The utility model discloses a piston type air compressor cylinder body capable of avoiding gas backflow, which comprises a compression cylinder body, a cylinder cover and a square base, and the cylinder cover and the square base are integrally formed at the top end and the bottom end of the compression cylinder body. A crank connecting rod structure used for driving the piston single bodies to do reciprocating linear motion is arranged below the compression cylinder body, an exhaust pipe used for guiding compressed air into the next cylinder body is installed on the outer wall of one side of the cylinder cover, and an air inlet pipe is installed at the center of the top end of the cylinder cover. According to the utility model, the one-way anti-backflow structure and the plurality of air inlet holes are additionally arranged, so that a plurality of air inlet channels can be utilized at the same time, the air inlet speed and the air inlet amount of air are improved, and the compressor can suck air more effectively and meet the operation requirements of high-load or high-air-inlet working conditions due to the advantage.

Description

Technical Field

[0001] The utility model relates to the technical field of piston type air compressors, in particular to a piston type air compressor cylinder body which can prevent gas backflow. Background Art

[0002] The cylinder of the V-type piston air compressor is a key component of the equipment and has multiple functions. Its structure mainly includes a cylinder, a piston and an air valve, forming a closed space. The air is compressed by the up and down movement of the piston. The cylinder is made of high-strength materials and can withstand high pressure, while the piston is made of wear-resistant materials to ensure durability. In the working principle of the V-type piston air compressor, the role of the cylinder is reflected in accommodating the cylinder and piston, sealing gas and conducting heat. The cylinder accommodates the movement of the piston and ensures that the gas does not leak during the compression stage. The cylinder maintains efficient compression performance through a sealing mechanism and can effectively conduct and dissipate the generated heat through design to prevent the compressor from overheating. At present, the cylinder of the piston air compressor mainly controls the intake process of the cylinder through a one-way valve during operation. However, the function of this type of one-way valve is to allow the gas to flow in one direction. It has fewer intake points and can only rely on a single channel, which limits the entry speed of the gas. This single-channel design makes it difficult for the compressor to meet sufficient intake volume under high load or high demand conditions, affecting its performance and efficiency. Utility Model Content

[0003] The utility model aims to provide a piston air compressor cylinder body that prevents gas backflow, adds a one-way anti-backflow structure inside the intake pipe, and realizes the purpose of multi-channel air intake through multiple intake holes arranged on the outer peripheral surface of the intake pipe, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a piston air compressor cylinder body for preventing gas backflow, comprising a compression cylinder body and a cylinder head and a square base integrally formed at the top and bottom ends of the compression cylinder body, a piston unit is slidably installed inside the compression cylinder body, a crank connecting rod structure for driving the piston unit to reciprocate linear motion is arranged below the compression cylinder body, an exhaust pipe for guiding compressed gas to the next cylinder body is installed on the outer wall of one side of the cylinder head, an intake pipe is installed at the center position of the top end of the cylinder head, an upper sealing head is fixed to the top end of the intake pipe, and a plurality of equidistant intake holes are arranged on the outer peripheral surface of the intake pipe, a one-way anti-backflow structure is arranged inside the intake pipe, and a valve plate for misalignment and overlap with the intake hole is installed at the movable end of the one-way anti-backflow structure.

[0005] Preferably, a plurality of heat sinks with equal spacing are fixed on the outer surface of the compression cylinder body.

[0006] Preferably, internal threaded holes are provided at the corners of the top of the square base, and a groove extending upward and for the rubber ring to be embedded is provided at the bottom of the square base.

[0007] Preferably, two symmetrical air guide tubes are arranged inside the valve plate, both ends of the air guide tubes pass through to the outside of the valve plate, and four air inlet holes are arranged, and the four air inlet holes are symmetrically structured about the central axis of the air inlet tubes.

[0008] Preferably, the one-way anti-backflow structure includes a guide sleeve fixed at one end inside the air inlet pipe, and a valve stem slidably installed inside the guide sleeve, the bottom end of the valve stem is fixedly connected to the top end of the valve plate, an annular lip is fixed to one end of the surface of the valve stem, a coil spring is installed at the bottom end of the annular lip, and the top end of the coil spring is fixedly connected to the top end of the guide sleeve.

[0009] Preferably, a rubber head is fixed to the top end of the valve stem.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the piston air compressor cylinder body that prevents gas backflow is provided with an intake pipe and a one-way anti-backflow structure and other structures that cooperate with each other. The multiple intake holes arranged on the outer peripheral surface of the intake pipe can provide multiple intake channels. By adding a one-way anti-backflow structure and setting multiple intake holes, multiple intake channels can be used at the same time, thereby increasing the gas entry speed and intake volume. Such advantages enable the compressor to inhale air more effectively and meet the operating requirements of high load or high intake conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 It is a side view structural schematic diagram of the utility model;

[0013] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0014] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0015] In the figure: 1. compression cylinder body; 101. heat sink; 2. cylinder head; 3. exhaust pipe; 4. piston unit; 5. crank-connecting rod structure; 6. square base; 7. intake pipe; 8. intake hole; 9. upper sealing head; 10. valve plate; 11. one-way anti-backflow structure; 1101. guide sleeve; 1102. valve stem; 1103. annular lip; 1104. coil spring; 1105. rubber head; 12. air guide pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4 The utility model provides an embodiment: a piston air compressor cylinder body for preventing gas backflow, comprising a compression cylinder body 1, a cylinder cover 2 and a square base 6 integrally formed at the top and bottom ends of the compression cylinder body 1, and a plurality of heat sinks 101 with equal spacing are fixed on the outer surface of the compression cylinder body 1;

[0018] A piston unit 4 is slidably installed inside the compression cylinder body 1, and a crank connecting rod structure 5 for driving the piston unit 4 to reciprocate and linearly move is arranged below the compression cylinder body 1. The driving unit in the V-type piston air compressor drives the crank connecting rod structure 5 to move, and the crank connecting rod structure 5 converts the rotary motion of the driving unit into the reciprocating linear motion of the piston unit 4. An exhaust pipe 3 for guiding the compressed gas to the next cylinder body is installed on the outer wall of one side of the cylinder head 2, and an intake pipe 7 is installed at the center position of the top of the cylinder head 2. An upper sealing head 9 is fixed to the top of the intake pipe 7. The upper sealing head 9 and the intake pipe 7 form a single-head sealed tubular structure;

[0019] The outer circumferential surface of the air inlet pipe 7 is provided with a plurality of equidistant air inlet holes 8, the interior of the air inlet pipe 7 is provided with a one-way anti-backflow structure 11, the movable end of the one-way anti-backflow structure 11 is provided with a valve plate 10 for misalignment and overlap with the air inlet hole 8, the interior of the valve plate 10 is provided with two symmetrical air guide pipes 12, both ends of the air guide pipes 12 penetrate to the outside of the valve plate 10;

[0020] When the piston monomer 4 moves upward, the compressed air in the cavity between the cylinder head 2 and the piston monomer 4 is discharged to the next cylinder through the exhaust pipe 3, and at this time, the valve plate 10 and the air guide pipe 12 are pushed upward by the pressure, that is, the one-way anti-backflow structure 11 is in a compressed state, and the valve plate 10 and the air inlet hole 8 overlap, so that the air inlet pipe 7 and the upper sealing head 9 are in a sealed state as a whole, preventing the external air from backflowing into the air inlet pipe 7, the cylinder head 2, and the compression cylinder body 1;

[0021] The corners of the top of the square base 6 are all provided with internal thread holes, and the bottom of the square base 6 is provided with a groove extending upward and for the rubber ring to be embedded. The internal thread holes, bolts and rubber rings are used to improve the sealing performance of the connection between the square base 6 and the central cylinder of the piston air compressor;

[0022] There are four air inlet holes 8, which are symmetrical about the central axis of the air inlet pipe 7. When the valve plate 10 and the air inlet holes 8 are staggered for active air intake, the multiple air inlet holes 8 disperse the flow path of the gas, which reduces the burden of a single channel and reduces the movement loss of components of the valve during high-frequency operation.

[0023] The one-way anti-backflow structure 11 includes a guide sleeve 1101 fixed to one end of the air inlet pipe 7, and a valve stem 1102 slidably installed inside the guide sleeve 1101. The bottom end of the valve stem 1102 is fixedly connected to the top end of the valve plate 10. During the sliding of the valve stem 1102, the guide sleeve 1101 improves the movement stability of the valve stem 1102, ensuring that the valve plate 10 moves straight up and down.

[0024] An annular lip 1103 is fixed to one end of the surface of the valve stem 1102, a coil spring 1104 is installed at the bottom end of the annular lip 1103, the top end of the coil spring 1104 is fixedly connected to the top end of the guide sleeve 1101, and a rubber head 1105 is fixed to the top end of the valve stem 1102;

[0025] When the piston unit 4 moves downward, the coil spring 1104 is gradually restored from its original stretched state, and then the coil spring 1104 pulls the annular lip 1103, the valve stem 1102 and the valve plate 10 downward, so that the valve plate 10 and the air inlet hole 8 no longer overlap, ensuring that external gas flows normally into the intake pipe 7, the cylinder head 2 and the compression cylinder body 1.

[0026] When the embodiment of the present application is in use, first, the driving unit in the V-type piston air compressor drives the crank connecting rod structure 5 to move, and the crank connecting rod structure 5 converts the rotary motion of the driving unit into the reciprocating linear motion of the piston monomer 4. When the piston monomer 4 moves upward, the compressed air in the cavity between the cylinder head 2 and the piston monomer 4 is discharged to the next cylinder through the exhaust pipe 3. At this time, the valve plate 10 and the air guide pipe 12 are pushed upward by the pressure, that is, the one-way anti-backflow structure 11 is in a compressed state, and the valve plate 10 and the air inlet hole 8 overlap, so that the air inlet pipe 7 and the upper sealing head 9 are in a sealed state as a whole, so as to prevent the external air from backflowing into the air inlet pipe 7, the cylinder head 2, and the compressor. In the cylinder body 1, when the piston monomer 4 moves downward, the one-way anti-backflow structure 11 returns to its original shape, so that the valve plate 10 and the air guide pipe 12 move downward as a whole, and the air intake hole 8 is interconnected with the external air. At this time, the air enters the compression cylinder body 1 and the cylinder head 2 through the air intake hole 8 and the air guide pipe 12 in turn, completing the purpose of air intake. In this process, the multiple air intake holes 8 arranged on the outer peripheral surface of the air intake pipe 7 can provide multiple air intake channels. By adding the one-way anti-backflow structure 11 and setting multiple air intake holes 8, multiple air intake channels can be used at the same time, thereby increasing the gas entry speed and air intake volume. Such advantages enable the compressor to inhale air more effectively and meet a wider range of working requirements.

Claims

1. A piston air compressor cylinder body for preventing gas backflow, characterized in that: The invention comprises a compression cylinder body (1), a cylinder head (2) integrally formed at the top and bottom of the compression cylinder body (1), and a square base (6); a piston unit (4) is slidably mounted inside the compression cylinder body (1); a crank connecting rod structure (5) for driving the piston unit (4) to reciprocate linearly is arranged below the compression cylinder body (1); an exhaust pipe (3) for guiding compressed gas to the next cylinder body is arranged on the outer wall of one side of the cylinder head (2); an intake pipe (7) is arranged at the center position of the top of the cylinder head (2); an upper sealing head (9) is fixed to the top of the intake pipe (7); and a plurality of equally spaced intake holes (8) are arranged on the outer peripheral surface of the intake pipe (7); a one-way anti-backflow structure (11) is arranged inside the intake pipe (7); and a valve plate (10) for displacing and overlapping with the intake hole (8) is arranged at the movable end of the one-way anti-backflow structure (11).

2. A piston air compressor cylinder body for preventing gas backflow according to claim 1, characterized in that: A plurality of cooling fins (101) with equal spacing are fixed on the outer surface of the compression cylinder body (1).

3. A piston air compressor cylinder body for preventing gas backflow according to claim 1, characterized in that: Internal threaded holes are provided at the corners of the top of the square base (6), and a groove extending upward and for the rubber ring to be embedded is provided at the bottom of the square base (6).

4. A piston air compressor cylinder body for preventing gas backflow according to claim 1, characterized in that: Two symmetrical air guide pipes (12) are arranged inside the valve plate (10), and both ends of the air guide pipes (12) penetrate to the outside of the valve plate (10). Four air inlet holes (8) are arranged, and the four air inlet holes (8) are symmetrically structured about the central axis of the air inlet pipe (7).

5. The piston air compressor cylinder body for preventing gas backflow according to claim 1, characterized in that: The one-way anti-backflow structure (11) comprises a guide sleeve (1101) fixed at one end inside the air intake pipe (7), and a valve stem (1102) slidably installed inside the guide sleeve (1101), the bottom end of the valve stem (1102) is fixedly connected to the top end of the valve plate (10), an annular lip (1103) is fixed to one end of the surface of the valve stem (1102), a coil spring (1104) is installed at the bottom end of the annular lip (1103), and the top end of the coil spring (1104) is fixedly connected to the top end of the guide sleeve (1101).

6. A piston air compressor cylinder body for preventing gas backflow according to claim 5, characterized in that: A rubber head (1105) is fixed to the top end of the valve stem (1102).

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