Air compressor system

Abstract

The utility model relates to an air compressor system which comprises an air compressor body, an air inlet of the air compressor body is communicated with an air filter through an air inlet valve, and a machine head of the air compressor body is communicated with an oil gas barrel. The air inlet valve comprises an upper pipe and a lower pipe which are coaxially connected end to end; an inner pipe and a circular check valve plate which are coaxial are arranged in the lower pipe, the outer diameter of the check valve plate is larger than the inner diameter of the upper pipe, and the bottom end of the inner pipe is closed; the end, away from the check valve plate, of the piston rod is slidably arranged in the inner pipe, and an inner spring is arranged between the bottom of the inner pipe and the bottom of the piston rod. A through gas hole is formed in the bottom surface of the inner pipe; the oil gas barrel communicates with the gas hole through a first gas pipe; a first electromagnetic valve, a first pressure limiting valve and a first emptying valve are sequentially arranged on the first gas pipe in the direction from the oil gas barrel to the gas hole. After pressure is loaded into the system through the air compressor to reach the threshold value of the pressure limiting valve, the check valve plate is closed, air is prevented from entering the system, light-load starting is formed, and the starting load of equipment can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compressor technical field, concretely relates to an air compressor system. BACKGROUND

[0002] The existing air compressor pneumatic control system is started through the air inlet valve, the basic structure of the air inlet valve is the non-return valve plate with spring control and the valve body itself, when the air compressor starts to operate, the non-return valve plate moves downward, when the air compressor is in no-load state, the non-return valve plate is lifted under the action of the spring to block the internal pressure from leaking;

[0003] In the above prior art, the non-return valve plate is not actively controlled, so that when the air compressor is loaded, the air compressor screw must rotate quickly, so that the air circuit in the system forms a cycle, and then drives the oil circuit to circulate, but this will cause a burden to the equipment, and therefore an air compressor system capable of light-load starting needs to be designed. UTILITY MODEL CONTENTS

[0004] To solve the problems in the above-mentioned technology, the utility model provides an air compressor system, which comprises an air compressor body, an air inlet of the air compressor body is communicated with an air filter through an air inlet valve, and a head of the air compressor body is communicated with an oil and gas bucket through a pipeline;

[0005] The air inlet valve comprises coaxially connected upper and lower pipes, and the inner diameter of the lower pipe is larger than that of the upper pipe;

[0006] The lower pipe is internally provided with a coaxial inner pipe and a circular non-return valve plate, the outer diameter of the non-return valve plate is larger than the inner diameter of the upper pipe, and the bottom end of the inner pipe is closed;

[0007] A piston rod is coaxially arranged on the bottom surface of the non-return valve plate, one end of the piston rod away from the non-return valve plate is slidably arranged in the inner pipe, and an inner spring is arranged between the bottom of the inner pipe and the bottom of the piston rod;

[0008] A gas hole is arranged on the bottom surface of the inner pipe, and the oil and gas bucket is communicated with the gas hole through a first gas pipe;

[0009] An electromagnetic valve one, a pressure limiting valve one and a vent valve one are sequentially arranged on the first gas pipe from the oil and gas bucket to the gas hole.

[0010] The inner pipe is internally provided with an electromagnet, and the electromagnet can be magnetically attracted to the bottom end of the piston rod after being electrified.

[0011] The outer side of the inner pipe is fixedly sleeved with a coaxial outer pipe, the bottom of the outer pipe is closed, a coaxial annular part is slidably arranged between the inner pipe and the outer pipe, and a ring-shaped convex part with elasticity is arranged on the top of the annular part.

[0012] An outer spring is arranged between the annular member and the bottom of the outer tube.

[0013] A coaxial annular plate is detachably arranged at the top end face of the outer tube, and the inner diameter of the annular plate is smaller than the outer diameter of the annular member.

[0014] The upper tube is internally provided with a butterfly valve plate, a shaft rod is fixedly arranged on the butterfly valve plate along the radial direction of the butterfly valve plate, both ends of the shaft rod are rotationally connected with the upper tube, one end of the shaft rod penetrates through the side wall of the upper tube, and a transmission rod is fixedly arranged at the penetrating end of the shaft rod.

[0015] The oil-gas barrel is communicated with the air cylinder through a second air pipe, an electromagnetic valve two and a vent valve two are arranged on the second air pipe, and the vent valve two is located between the electromagnetic valve two and the air cylinder.

[0016] The side wall of the outer tube is fixedly connected with the inner wall of the lower tube through a plurality of supporting rods.

[0017] The utility model discloses the beneficial effect that:

[0018] After the air compressor loads pressure to the pressure limiting valve threshold value in the system, closes the check valve plate, prevents air from entering the system, forms light load starting, can:

[0019] 1. Avoid the overheat phenomenon of motor winding due to instantaneous passing of excessive current;

[0020] 2. Ensure normal torque, under light load condition, the motor can provide sufficient torque to make the compressor part of the air compressor reach normal running speed,

[0021] 3. Reduce mechanical wear and tear, when light load starting, the axial and radial force received by the screw rotor is small, and the excessive wear and tear caused by sudden strong extrusion between the screw and the shell can be avoided

[0022] 4. If the air compressor adopts belt, coupling and other transmission modes, light load starting can reduce the impact on these transmission components

[0023] 5. Light load starting is beneficial to the stable establishment of the pressure in the air compressor system. In the initial stage of starting, the load of the compressor is small, and the air inlet and air outlet processes can be more effectively controlled. Light load starting can make the system pressure rise according to the set curve, avoid the sudden load starting caused by the system pressure and avoid the system pressure. The stable pressure establishment process is also very important for the gas equipment connected to the air compressor, can provide stable gas source, prevent the gas equipment from malfunctioning due to pressure mutation.

[0024] In addition, the check valve plate is controlled to be fully opened by the electromagnet during loading, so that the system air inlet is smooth, the system pressure is quickly established, and the oil circulation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0026] Figure 1 is the front view of the utility model;

[0027] Figure 2 is the front view of the utility model Figure 1 A part of the enlarged view;

[0028] Figure 3 is the first perspective view of the air inlet valve of the utility model;

[0029] Figure 4 is the second perspective view of the air inlet valve of the utility model;

[0030] Figure 5 is the internal structure schematic view of the air inlet valve of the utility model;

[0031] Figure 6 is the front view of the utility model Figure 5 B part of the enlarged view.

[0032] Explanation of reference signs

[0033] 1, air compressor body; 2, air inlet valve; 21, lower pipe; 22, upper pipe; 221, butterfly valve plate; 222, shaft rod; 223, transmission rod; 23, outer pipe; 231, support rod; 232, annular plate; 233, annular part; 2331, annular protrusion; 234, outer spring; 24, check valve plate; 241, piston rod; 25, inner pipe; 26, inner spring; 27, electromagnet; 3, air filter; 4, oil gas barrel; 5, electromagnetic valve two; 51, second air pipe; 6, air cylinder; 7, emptying valve two; 8, first air pipe; 81, electromagnetic valve one; 82, pressure limiting valve; 83, emptying valve one; 9, air hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. In the following description, a lot of specific details are set forth in order to give a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore, the utility model is not limited by the following disclosed specific embodiments.

[0035] As Figures 1 to 6As shown, the air compressor system provided by the application comprises an air compressor body 1, an air inlet of the air compressor body 1 is communicated with an air filter 3 through an air inlet valve 2, and a head of the air compressor body 1 is communicated with an oil-gas bucket 4 through a pipeline;

[0036] The air inlet valve 2 comprises coaxially connected upper and lower pipes 22 and 21, and the inner diameter of the lower pipe 21 is larger than that of the upper pipe 22;

[0037] The upper pipe 22 is internally provided with a butterfly valve plate 221;

[0038] The lower pipe 21 is internally provided with a coaxial inner pipe 25 and a circular check valve plate 24, the outer diameter of the check valve plate 24 is larger than the inner diameter of the upper pipe 22, and the bottom end of the inner pipe 25 is closed;

[0039] The bottom surface of the check valve plate 24 is provided with a coaxial piston rod 241, one end of the piston rod 241 away from the check valve plate 24 is slidingly arranged in the inner pipe 25, and an inner spring 26 is arranged between the bottom of the inner pipe 25 and the bottom of the piston rod 241;

[0040] The bottom surface of the inner pipe 25 is provided with a through air hole 9, and the oil-gas bucket 4 is communicated with the air hole 9 through a first air pipe 8 penetrating the lower pipe 21;

[0041] The first air pipe 8 is sequentially provided with a solenoid valve 81, a pressure limiting valve 82 and a vent valve 83 along the direction from the oil-gas bucket 4 to the air hole 9, and specifically, a communicating branch air pipe is arranged between the vent valve 83 and the air hole 9 on the first air pipe 8, and the vent valve 83 is arranged on the branch air pipe.

[0042] The inner surface of the inner pipe 25 is provided with a solenoid 27, and the solenoid 27 can be magnetically attracted to the bottom end of the piston rod 241 after being powered on.

[0043] The power supply line of the solenoid 27 is led out through a wire terminal arranged on the side wall of the lower pipe 21 and is electrically connected to a control chip, i.e. a PLC, arranged on the air compressor body 1, and the vent valve and the solenoid valve in the application are controlled by the PLC carried by the air compressor.

[0044] The outer side of the inner pipe 25 is fixedly provided with a coaxial outer pipe 23, the bottom of the outer pipe 23 is closed, a coaxial ring-shaped part 233 is slidingly arranged between the inner pipe 25 and the outer pipe 23, the top of the ring-shaped part 233 is provided with a coaxial ring-shaped protrusion 2331 with elasticity, such as a rubber ring.

[0045] An outer spring 234 is arranged between the ring-shaped part 233 and the bottom of the outer pipe 23;

[0046] The top end face of the outer tube 23 is detachably provided with a coaxial annular plate 232, and the inner diameter of the annular plate 232 is smaller than the outer diameter of the annular part 233.

[0047] The shaft rod 222 is fixedly arranged on the butterfly valve plate 221 along the radial direction, and the two ends of the shaft rod 222 are rotationally connected with the upper tube 22, one end of the shaft rod 222 penetrates through the side wall of the upper tube 22, and the penetrating end of the shaft rod 222 is fixedly provided with a transmission rod 223, and the end, away from the shaft rod 222, of the transmission rod 223 is rotationally connected with the end of the telescopic rod of the air cylinder 6.

[0048] The oil-gas barrel 4 is communicated with the air cylinder 6 through a second air pipe 51, and the second air pipe 51 is provided with an electromagnetic valve 2 5 and a vent valve 2 7, the vent valve 2 7 is located between the electromagnetic valve 2 5 and the air cylinder 6, and specifically, an auxiliary air pipe is also arranged on the second air pipe 51 between the electromagnetic valve 2 5 and the air cylinder 6, and the vent valve 2 7 is located on the auxiliary air pipe.

[0049] The side wall of the outer tube 23 is fixedly connected with the inner wall of the lower tube 21 through a plurality of supporting rods 231.

[0050] In use, the butterfly valve plate 221 is always open, the electromagnetic valve 2 5 is closed, the electromagnetic valve 1 81 is open, the two vent valves are closed, the electromagnet 27 is adsorbed to the vertical rod 241, so that the check valve plate 24 is at the bottom end, the screw rod of the air compressor body 1 is started, the external air is filtered through the air filter 3 and then enters the inside of the air compressor body 1 through the air inlet valve 2, the screw rod rotates to charge the air into the oil-gas barrel 4, so that the internal pressure of the system can be quickly established, when the internal pressure rises to the pressure threshold of the pressure limiting valve 82, the electromagnet 27 loses power, the air pressure is conducted to the inside of the inner tube 25 through the pressure limiting valve 82, the check valve plate 24 is lifted, the bottom of the upper tube 22 is closed, so that the internal pressure of the system is maintained in a light pressure state, and the system continues to run for a certain period of time.

[0051] The electromagnetic valve 1 81 is closed, the vent valve 1 83 is open, the pressure inside the inner tube 25 is vented, the position of the check valve plate 24 is controlled by the internal spring 234 and the negative pressure of the upstream end of the screw rod inside the air compressor body 1, and the air compressor enters a normal working state.

[0052] When the internal pressure of the oil-gas barrel 4 reaches the normal demand pressure, the pressure sensor arranged inside the oil-gas barrel 4 sends a pressure signal to the control chip PLC, and then controls the electromagnetic valve 2 5 to be open, so that the air pressure is delivered to the air cylinder 6, the telescopic rod of the air cylinder 6 drives the transmission rod 223, and then drives the butterfly valve plate 221 to rotate and close.

[0053] When the gas in the oil and gas barrel 4 is transported to the downstream end device, the butterfly valve plate 221 needs to be opened again by the gas cylinder 6, the electromagnetic valve 5 is closed, the vent valve 7 is opened, the gas cylinder 6 is depressurized, the telescopic rod is retracted by the spring inside the gas cylinder 6, the butterfly valve plate 211 is opened, and the gas cylinder 6 is a spring type gas cylinder in the prior art;

[0054] When the screw upstream end inside the air compressor body 1 generates negative pressure, the check valve plate 24 moves downward under the action of the external air pressure, and if the downstream end setting requires excessive gas, the check valve plate 24 will quickly drop and impact the top of the inner tube 25, and the elastic annular protrusion 2331 on the annular part 233 will be in contact with the bottom surface of the check valve plate 24 first, and then the outer spring 234 will buffer and protect the check valve plate 24.

[0055] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. An air compressor system, characterized by, The air compressor body, the air inlet of the air compressor body is communicated with the air filter through the air inlet valve, and the head of the air compressor body is communicated with the oil-gas bucket through the pipeline; The air inlet valve comprises coaxially connected upper pipe and lower pipe, the inner diameter of the lower pipe is larger than that of the upper pipe; The lower pipe is provided with coaxial inner pipe and circular check valve plate, the outer diameter of the check valve plate is larger than the inner diameter of the upper pipe, and the bottom end of the inner pipe is closed; The bottom surface of the check valve plate is provided with a coaxial piston rod, one end of the piston rod away from the check valve plate is slidably arranged in the inner pipe, and an inner spring is arranged between the bottom of the inner pipe and the bottom of the piston rod; The bottom surface of the inner pipe is provided with a through air hole, and the oil-gas bucket is communicated with the air hole through the first air pipe; The first air pipe is provided with electromagnetic valve one, pressure limiting valve one and vent valve one in sequence from the oil-gas bucket to the air hole.

2. An air compressor system according to claim 1, wherein, The inner pipe is provided with an electromagnet, and the electromagnet can be magnetically attracted to the bottom end of the piston rod after being electrified.

3. An air compressor system as claimed in claim 2, wherein, The outer pipe is coaxially arranged on the outer side of the inner pipe, the bottom of the outer pipe is closed, the annular part is coaxially arranged between the inner pipe and the outer pipe, the top of the annular part is provided with a coaxial elastic annular protrusion; An outer spring is arranged between the annular part and the bottom of the outer pipe; The top end face of the outer pipe is detachably provided with a coaxial annular plate, and the inner diameter of the annular plate is smaller than the outer diameter of the annular part.

4. An air compressor system as claimed in claim 3, wherein, The upper pipe is provided with a butterfly valve plate, a shaft rod is fixedly arranged on the butterfly valve plate in the radial direction, both ends of the shaft rod are rotationally connected with the upper pipe, one end of the shaft rod penetrates out of the side wall of the upper pipe, a transmission rod is fixedly arranged on the penetrating end of the shaft rod, and the end of the transmission rod away from the shaft rod is rotationally connected with the telescopic rod of the air cylinder.

5. An air compressor system as claimed in claim 4, wherein, The oil-gas bucket is communicated with the air cylinder through the second air pipe, the second air pipe is provided with electromagnetic valve two and vent valve two, and the vent valve two is located between the electromagnetic valve two and the air cylinder.

6. An air compressor system according to any one of claims 3-5, characterized in that The side wall of the outer pipe is fixedly connected with the inner wall of the lower pipe through a plurality of supporting rods.

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