An air compressor intake valve configured with a comprehensive valve structure

Abstract

The present invention relates to the field of air compressors, in particular to an air intake valve of an air compressor configured with an integrated valve structure, which is characterized by comprising an air intake valve main body and an integrated valve. The integrated valve includes a first pressure gas passage, a second pressure gas passage, a load / unload control module, a load / unload passage, a relief passage, a gas replenishment passage, and a load / unload relief passage. The first pressure gas passage is connected to the second pressure gas passage through the load / unload control module, and at the same time is connected to the relief passage and the gas replenishment passage through a relief combination valve. The second pressure gas passage is connected to the load / unload passage and is connected to the load / unload relief passage through the load / unload control module. The air intake valve main body includes a valve body and a valve seat inside the valve body. A check module connected to the load / unload passage is arranged inside the valve seat. The gas replenishment passage and the load / unload relief passage are connected to a valve cavity inside the valve body. The present invention can reduce the leakage points of the air intake valve of the air compressor, has high integration, a compact structure, reduces production costs, and improves economy.

Description

Technical Field

[0001] The present invention relates to the field of air compressors, and particularly to an air intake valve of an air compressor configured with a comprehensive valve structure. Background Art

[0002] An air compressor is a gas compression device. Currently, air compressors are developing rapidly and the demand is on the rise. As an important accessory in the air compressor system, the intake valve controls the opening and closing of the compressor intake port. In existing air compressor intake valves, the air replenishing channel and the discharge channel are usually arranged in different valve blocks, with low integration, inconvenient installation cost control, and easy leakage. Summary of the Invention

[0003] The purpose of the present invention is to provide an air intake valve of an air compressor configured with a comprehensive valve structure, aiming to solve the above problems.

[0004] An air intake valve of an air compressor configured with a comprehensive valve structure provided by the present invention is characterized in that it includes an air intake valve body and a comprehensive valve; the comprehensive valve includes a first pressure gas channel, a second pressure gas channel, a load / unload control module, a load / unload channel, a discharge channel, an air replenishing channel, and a load / unload discharge channel; the first pressure gas channel is connected to the second pressure gas channel through the load / unload control module, and at the same time is connected to the discharge channel and the air replenishing channel through a discharge combination valve; an air replenishing check valve is arranged in the middle of the air replenishing channel; the second pressure gas channel is connected to the load / unload channel and is connected to the load / unload discharge channel through the load / unload control module; the load / unload channel, the air replenishing channel, and the load / unload discharge channel are connected to the air intake valve body; the discharge channel is communicated with the outside.

[0005] Further, the discharge combination valve includes a discharge valve core, a discharge valve spring seat, and a discharge valve compression spring; the discharge valve compression spring faces the first pressure gas channel and is sleeved on the discharge valve spring seat; the discharge valve core abuts against the other side of the discharge valve spring seat and the discharge valve compression spring.

[0006] Further, the air replenishing check valve includes an air replenishing valve core, an air replenishing valve spring seat, and an air replenishing valve compression spring; one end of the air replenishing valve compression spring is sleeved in the air replenishing valve spring seat, and the other end abuts against the air replenishing valve core.

[0007] Further, the load / unload control module is an electromagnetic valve.

[0008] Further, the electromagnetic valve includes an electromagnetic valve core, an electromagnetic valve compression spring, and an electromagnetic valve body; the electromagnetic valve core and the electromagnetic valve compression spring are arranged in the electromagnetic valve body; the electromagnetic valve compression spring abuts against the electromagnetic valve core.

[0009] Further, the intake valve body includes an air inlet, a valve body, an air outlet, and a valve seat; the air inlet and the air outlet are arranged on the valve body; the valve seat is located inside the valve body, and a valve cavity is formed between the valve seat and the valve body; a check module is arranged inside the valve seat; the check module is connected to the loading and unloading channel; the air replenishing channel and the loading and unloading discharge channel are connected to the valve cavity.

[0010] Further, the check module includes a check valve core, a check valve core push rod, a return spring, and a check cylinder; one end of the check valve core push rod is fixed on the check valve core, and the other end is connected to the check cylinder through the return spring; the check cylinder is connected to the loading and unloading channel.

[0011] Further, the check cylinder includes a spring limit cover plate, a check spring, and a check valve piston; the spring limit cover plate is fitted and installed on the check valve core; the check valve core push rod passes through the spring limit cover plate and is connected to the check valve core; the check valve piston matches the inner diameter of the valve seat and divides the valve seat into a piston cavity and an air chamber; the check spring is sleeved on the check valve core push rod, one end abuts against the piston limit cover plate, and the other end is connected to the check valve piston; the air chamber is connected to the loading and unloading channel.

[0012] Further, the air outlet is arranged at the bottom end of the valve body and is connected to the air compressor; the air inlet is arranged at the top end of the valve body; the discharge channel opens on one side of the air inlet.

[0013] Compared with the prior art, a notable feature of the air compressor intake valve with an integrated valve structure according to the present invention is that it reduces the leakage points of the air compressor intake valve, has high integration, a compact structure, reduces production costs, and improves economic efficiency. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the internal structure of a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention;

[0015] Figure 2 is a schematic diagram of the external structure of a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention;

[0016] Figure 3 is a schematic diagram when the air compressor check valve is opened in a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention;

[0017] Figure 4 is a schematic diagram when the air compressor check valve is closed in a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention;

[0018] Figure 5In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the opening of the discharge combination valve in the loading mode;

[0019] Figure 6 In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the air flow in the discharge channel and the air supplement channel in the loading mode;

[0020] Figure 7 In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the air flow in the loading and unloading channel in the loading mode;

[0021] Figure 8 In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the air flow in the loading and unloading channel in the loading mode;

[0022] Figure 9 In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the air flow in the second pressure gas channel in the loading mode;

[0023] Figure 10 In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the air flow in the second pressure gas channel and the loading and unloading discharge channel in the loading mode;

[0024] Figure 11 In a preferred embodiment of the air compressor intake valve with an integrated valve structure according to the present invention, it is a schematic diagram of the air flow in the loading and unloading discharge channel in the loading mode.

[0025] Wherein, 1 - air inlet, 2 - valve body, 3 - valve cavity, 4 - check valve core, 5 - spring limit cover plate, 6 - check valve core push rod, 7 - check spring, 8 - piston cavity, 9 - check valve piston, 10 - air outlet, 11 - air chamber, 12 - return spring, 13 - valve seat, 14 - loading and unloading channel, 15 - air supplement channel, 16 - discharge valve core, 17 - air supplement valve spring seat, 18 - air supplement valve compression spring, 19 - air supplement valve core, 20 - integrated valve, 21 - discharge valve spring seat, 22 - discharge compression spring, 23 - solenoid valve core, 24 - solenoid valve compression spring, 25 - solenoid valve, 26 - discharge channel, 27 - air flow pipeline; 28 - loading and unloading discharge channel; 29 - first pressure gas channel; 30 - second pressure gas channel. Detailed Embodiment

[0026] The following will describe the specific embodiments of the present invention with reference to the accompanying drawings. Embodiment

[0027] Please refer to Figures 1 to 11, the present invention discloses an air compressor intake valve configured with an integrated valve structure, which consists of two major modules: an integrated valve 20 and an intake valve body.

[0028] The integrated valve 20 integrates functions of discharge, air replenishment, and load / unload control, and is fitted and installed on one side of the intake valve. It is connected to the air compressor intake valve through a load / unload passage 14, an air replenishment passage 15, and a load / unload discharge passage 28. The discharge passage 26 of the integrated valve 20 is communicated with the external atmosphere and is arranged beside the air intake port 1.

[0029] In the integrated valve 20, a first pressure gas passage 29 is connected to an external oil and gas cylinder to receive high-pressure gas from the oil and gas cylinder. A load / unload control module composed of an electromagnetic valve 25 is located at the intersection of the first pressure gas passage 29, the second pressure gas passage 30, and the load / unload discharge passage 28. When the electromagnetic valve 25 is de-energized, the second pressure gas passage 30 conducts the first pressure gas passage 29, but neither is communicated with the load / unload discharge passage 28. When the electromagnetic valve 25 is energized, the second pressure gas passage 30 conducts the load / unload discharge passage 28, but neither is communicated with the first pressure gas passage 29. At the same time, while the first pressure gas passage 29 is connected to the second pressure gas passage 30 through the electromagnetic valve 25, it is also connected to the discharge passage 26 and the air replenishment passage through a discharge combination valve. The discharge combination valve is controlled by the gas pressure in the second pressure gas passage 30. When the gas pressure in the second pressure gas passage 30 can push the discharge combination valve, the discharge combination valve opens, and the first pressure gas passage 29 is simultaneously conducted to the discharge passage 26 and the air replenishment passage. The air replenishment passage 15 and the load / unload discharge passage 28 are communicated with the valve cavity 3 of the intake valve. An air replenishment check valve is also arranged in the middle of the air replenishment passage 15, allowing only gas to enter the intake valve from the integrated valve 20.

[0030] The pressure relief combination valve consists of a pressure relief valve core 16, a pressure relief valve spring seat 21, and a pressure relief valve compression spring 22. The pressure relief valve compression spring 22 is sleeved on the pressure relief valve spring seat 21, making the pressure relief valve spring seat 22 fit against the inner valve body of the integrated valve 20. At the same time, the pressure relief valve core 16 abuts against the pressure relief valve spring seat 22 from the other side. The high-pressure gas entering the first pressure gas passage 29 presses the pressure relief valve spring seat 21 completely against the inner valve body. At this time, if the solenoid valve 25 is turned on, the high-pressure gas flows out along the gas flow pipe 27 of the first pressure gas passage 29, enters the interior of the integrated valve 20 again after passing through the solenoid valve 25, then continues to move forward along the second pressure gas passage 30, and finally enters the intake valve through the loading and unloading passage 14. At this time, the high-pressure gas in the second pressure gas passage 30 also pushes the pressure relief valve core 16 from the rear side, but on the other side of the pressure relief valve core 16 is the high-pressure gas that has just entered the integrated valve 20. Under the combined action of the pressure relief valve compression spring 22 and the high-pressure gas, the pressure relief valve core 16 remains stationary, and the pressure relief valve spring seat 22 and the inner valve body of the integrated valve 20 continue to remain closed. If the solenoid valve 25 is closed, the gas from the loading and unloading passage 14 moves in the reverse direction and pushes the pressure relief valve core 1 from the rear side. When the gas pressure from the loading and unloading passage 14 is greater than the superimposed pressure of the high-pressure gas that has just entered the integrated valve 20 and the pressure relief valve compression spring 22, the pressure relief valve core 16 moves outward, pushing the pressure relief valve spring seat 22, causing a gap to appear between the pressure relief valve spring seat 22 and the inner valve body of the integrated valve 20. At this time, the high-pressure gas from the first pressure passage passes through this gap through the pressure relief combination valve, and then is divided into two paths, respectively entering the pressure relief passage 26 and the air compensation passage 15. The gas entering the pressure relief passage 26 is discharged to the external atmosphere, and the gas entering the air compensation passage 15, after pushing open the air compensation check valve, enters the valve cavity 3 of the intake valve.

[0031] The air compensation check valve includes an air compensation valve core 19, an air compensation valve spring seat 17, and an air compensation valve compression spring 19. The air compensation valve spring seat 17 is fixed on the valve body of the integrated valve 20. One end of the air compensation valve compression spring 19 is sleeved inside the air compensation valve spring seat 17, and the other end abuts against the air compensation valve core 19. When the pressure inside the integrated valve 20 is greater than that of the intake valve, the gas pressure offsets the pressure of the air compensation valve compression spring 19, and the air compensation valve core 19 moves downward, and the air compensation check valve opens. Otherwise, under the action of the air compensation valve compression spring 19, the air compensation check valve closes.

[0032] The solenoid valve 25 provided at the top of the integrated valve 20 includes a solenoid valve core 23, a solenoid valve compression spring 24, and a solenoid valve body. The solenoid valve core 23 and the solenoid valve compression spring 24 are arranged inside the solenoid valve body, and the solenoid valve compression spring 24 abuts against the solenoid valve core 23. The solenoid valve 25 is controlled by an external electrical signal: when de-energized, the solenoid valve 25 is turned on, and when energized, the solenoid valve 25 is closed.

[0033] In the intake valve body cooperating with the integrated valve 20, there are an intake port 1, a valve body 2, an outlet port 10 and a valve seat 13. The intake port 1 is arranged at the top of the valve body 2, and the outlet port 10 is arranged at the bottom of the valve body 2 and is connected to an air compressor. The valve seat 13 is located at the lower side inside the valve body 2, thereby forming a valve chamber 3 between the valve seat 13 and the valve body 2. The valve chamber 3 is located between the intake port 2 and the outlet port 10.

[0034] A check module is installed in the valve seat 13. The check module includes a check valve core 4, a check valve core push rod 6, a return spring 12, a spring limit cover plate 5, a check spring 7 and a check valve piston 9; the spring limit cover plate 5, the check spring 7 and the check valve piston 9 form a check cylinder. In the check cylinder, the spring limit cover plate 5 is fitted and installed against the check valve core 4 to control the stroke of the check spring 7. The check valve core push rod 6 passes through the spring limit cover plate 5 and is connected to the check valve core 4. Inside the valve seat 13, a check valve piston 9 matching the inner diameter of the valve seat 13 divides the valve seat 13 into a piston chamber 8 and an air chamber 11. The check spring 7 is sleeved on the check valve core push rod 6, with one end abutted against the piston limit cover plate 5 and the other end connected to the check valve piston 9. One end of the check valve core push rod 6 is fixed on the check valve core 4, and the other end is connected to the check valve piston 9 through the return spring 12. The size of the check valve core 4 matches that of the intake port 1. When the check valve core 4 moves upward, the intake port 1 is closed, and when it moves downward, the intake port 1 is opened.

[0035] Please refer specifically to Figure 3 and Figure 4 , this check module includes two movable parts. The return spring 12 pushes the check valve core push rod 6 to drive the check valve core 4 to move up and down, and the check valve piston 9 also moves up and down to balance the elastic forces of the air chamber 11 and the check spring 7. When the air pressure in the air chamber 11 increases, the check valve piston 9 moves upward, driving the return spring 12, the check valve core push rod 6 and the check valve core 4 to move upward to close the intake port 1. However, if the negative pressure in the valve chamber 3 is large enough, external air can open the intake port 1 again by compressing the return spring 12. When the air pressure in the air chamber 11 decreases, the check valve piston 9 moves downward and the intake port 1 is opened. The air chamber 11 is connected to the loading and unloading channel 14 of the integrated valve 20.

[0036] This embodiment has multiple working modes: start mode, load mode and unload mode.

[0037] When the air compressor starts, it enters the startup mode. In the startup mode, the solenoid valve 25 in the integrated valve 20 is turned on, and the air inlet 1 of the intake valve is in the open state. The air compressor sucks in gas from the air inlet 1, and after compression, the high-pressure gas enters the oil and gas cylinder and enters the first pressure gas passage 29 of the integrated valve 20. At this time, as described above, the high-pressure gas flows along the air flow pipe 27 in the first pressure gas passage 29, the solenoid valve 25, and the second pressure gas passage 30, enters the loading and unloading passage 14, and reaches the air chamber 11 of the intake valve. The pressure in the air chamber 11 increases, pushing the check piston 9 upward. After the pressure in the air chamber 11 reaches a certain level, the check piston 9 drives the check valve core 4 upward to close the intake valve 1.

[0038] When the pressure in the oil and gas cylinder increases and exceeds a certain threshold, under the scheduling of the control system, the solenoid valve 25 is energized and the solenoid valve 25 closes, and the air compressor enters the loading mode. Please refer to Figures 6 to 11 , at this time, the passage of the air flow pipe 27 is cut off. At the same time, the compressed gas in the air chamber 11 of the intake valve moves reversely along the loading and unloading passage 14 under the action of the check spring 7 and discharges from the air chamber 11. During the discharge of the compressed gas, it pushes the relief valve core 16 outward, and the relief valve core 16 simultaneously pushes the relief valve spring seat 20 outward, creating a gap between it and the first pressure passage. The high-pressure gas from the oil and gas cylinder is divided into two paths through this gap: one path discharges upward along the relief passage 26, and the other path advances along the air supply passage, reaches the valve cavity 3 after pushing open the air supply valve core 19. At the same time, the compressed gas continues to run reversely along the second pressure passage, enters the loading and unloading relief passage 28 after passing through the solenoid valve 25, and finally also enters the valve cavity 3. As the compressed gas discharges from the air chamber 11, the check piston 9 is pushed downward by the check spring 7, driving the check valve core 4 downward, and the intake valve 1 opens.

[0039] When the pressure in the oil and gas cylinder drops and exceeds a certain threshold, under the scheduling of the control system, the solenoid valve 25 is de-energized and the solenoid valve 25 opens again, entering the unloading mode. Similar to the startup mode, the high-pressure gas from the oil and gas cylinder passes through the air flow pipe 27, passes through the solenoid valve 25, and then passes through the loading and unloading air flow passage 14 to reach the air chamber 11 of the intake valve. When the pressure in the air chamber 11 reaches a certain level, it again pushes the check piston 9 upward, thereby pushing the check valve core 4 to close the air inlet 1.

[0040] The above is only the preferred embodiment of the present invention and is not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the scope of the patent application of the present invention should fall within the technical scope of the present invention.

Claims

1. An air compressor intake valve configured with a comprehensive valve structure, characterized in that, It includes an intake valve body and a combined valve; the combined valve includes a first pressure gas passage, a second pressure gas passage, a loading and unloading control module, a loading and unloading passage, a relief passage, a make-up air passage, and a loading and unloading relief passage; the first pressure gas passage is connected to the second pressure gas passage through the loading and unloading control module, and at the same time is connected to the relief passage and the make-up air passage through a relief combination valve; a check valve for make-up air is provided in the middle of the make-up air passage; the second pressure gas passage is connected to the loading and unloading passage and is connected to the loading and unloading relief passage through the loading and unloading control module; the loading and unloading passage, the make-up air passage, and the loading and unloading relief passage are connected to the intake valve body; the relief passage is communicated with the outside; The loading and unloading control module is a solenoid valve; The relief combination valve includes a relief valve core, a relief valve spring seat, and a relief valve compression spring; the relief valve compression spring faces the first pressure gas passage and is sleeved on the relief valve spring seat; the relief valve core abuts against the other side of the relief valve spring seat and the relief valve compression spring; The check valve for make-up air includes a make-up air valve core, a make-up air valve spring seat, and a make-up air valve compression spring; one end of the make-up air valve compression spring is sleeved inside the make-up air valve spring seat, and the other end abuts against the make-up air valve core; The intake valve body includes an air inlet, a valve body, an air outlet, and a valve seat; the air inlet and the air outlet are provided on the valve body; the valve seat is located inside the valve body, and a valve cavity is formed between the valve seat and the valve body; a check module is provided inside the valve seat; the check module is connected to the loading and unloading passage; the make-up air passage and the loading and unloading relief passage are connected to the valve cavity; the check module includes a check valve core, a check valve core push rod, a return spring, and a check cylinder; one end of the check valve core push rod is fixed on the check valve core, and the other end is connected to the check cylinder through the return spring; the check cylinder is connected to the loading and unloading passage; the check cylinder includes a spring limit cover plate, a check spring, and a check valve piston; the spring limit cover plate is attached to the installation of the check valve core; the check valve core push rod passes through the spring limit cover plate and is connected to the check valve core; the check valve piston matches the inner diameter of the valve seat and divides the valve seat into a piston cavity and an air chamber; the check spring is sleeved on the check valve core push rod, one end abuts against the piston limit cover plate, and the other end is connected to the check valve piston; the air chamber is connected to the loading and unloading passage; the air outlet is provided at the bottom end of the valve body and is connected to an air compressor; When the air compressor starts, it enters the start mode; in the start mode, the solenoid valve in the integrated valve is turned on, and the air inlet of the intake valve is in the open state. The air compressor sucks in gas from the air inlet, and after compression, the high-pressure gas enters the oil and gas cylinder and enters the first pressure gas passage of the integrated valve; at this time, the high-pressure gas flows along the air flow pipe, solenoid valve, and second pressure gas passage in the first pressure gas passage, enters the loading and unloading passage, and reaches the air chamber of the intake valve; the air chamber pressure rises, pushing the check piston upward; after the air chamber pressure reaches a certain level, the check piston drives the check valve core upward to close the intake valve. When the pressure in the oil and gas cylinder increases and exceeds a certain threshold, under the scheduling of the control system, the solenoid valve closes, and the air compressor enters the loading mode; at this time, the passage of the air flow pipe in the first pressure gas passage is cut off; at the same time, the compressed gas in the air chamber of the intake valve moves reversely along the loading and unloading passage under the action of the check spring, discharging the air chamber; during the discharge of the compressed gas, it pushes the relief valve core outward, and the relief valve core also pushes the relief valve spring seat outward, creating a gap between it and the first pressure gas passage; the high-pressure gas from the oil and gas cylinder is divided into two paths through this gap: one path discharges upward along the relief passage, and the other path advances along the air replenishment passage, reaches the valve cavity after pushing open the air replenishment valve core; at the same time, the compressed gas continues to run reversely along the second pressure gas passage, enters the loading and unloading relief passage after passing through the solenoid valve, and finally also enters the valve cavity; as the compressed gas is discharged from the air chamber, the check piston is pushed downward by the check spring, driving the check valve core downward to open the intake valve. When the pressure in the oil and gas cylinder drops and exceeds a certain threshold, under the scheduling of the control system, the solenoid valve is turned on again, and it enters the unloading mode; the high-pressure gas from the oil and gas cylinder passes through the air flow pipe in the first pressure gas passage, passes through the solenoid valve, and then reaches the air chamber of the intake valve through the loading and unloading air flow passage; when the air chamber pressure reaches a certain level, it again pushes the check piston upward, thereby driving the check valve core to close the air inlet.

2. The air compressor inlet valve configured with a comprehensive valve structure according to claim 1, characterized in that, The solenoid valve includes a solenoid valve core, a solenoid valve compression spring, and a solenoid valve body; the solenoid valve core and the solenoid valve compression spring are arranged in the solenoid valve body; the solenoid valve compression spring abuts against the solenoid valve core.

3. The air compressor intake valve configured with a comprehensive valve structure as claimed in claim 1, characterized in that, The air inlet is arranged at the top of the valve body; the relief passage opens on one side of the air inlet.

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