Pressure control device of double-screw air compressor

Abstract

The utility model provides a double-screw air compressor pressure control device which comprises an oil separator, the oil separator is respectively connected with an air compression main machine pipeline, the top of the oil separator is fixedly provided with a pressure regulating assembly, the pressure regulating assembly comprises a valve body, one side of the valve body is fixedly provided with an air storage tank connector, and the air storage tank connector is fixedly connected with the oil separator. The air storage tank connector is communicated with an air storage tank through a guide pipe, the top end of the interior of the valve body is rotationally connected with a trapezoidal lead screw, the surface of the trapezoidal lead screw is in threaded connection with a lead screw seat, and a positioning seat is arranged at the bottom end of the interior of the valve body. According to the pressure control device, the hexagonal column is driven to rotate through the rotating hand wheel, the trapezoidal lead screw is driven to rotate through the hexagonal column, the lead screw base is driven to move downwards through the trapezoidal lead screw, the spring is extruded in the moving-down process of the lead screw base, the pressure is monitored in real time through the annular pressure sensor, and pressure adjustment of the air compressor is achieved; compared with a traditional adjusting mode, the adjusting mode is more accurate in pressure adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology and relates to a pressure control device for a twin-screw air compressor. Background Technology

[0002] A twin-screw air compressor is a rotary positive displacement compressor consisting of two meshing screws that compress gas through periodic volume changes in the rotor teeth. Its structure includes a compressor housing, motor, cooling system, and intake / exhaust channels. The core components are the precisely fitted male and female rotors and the housing.

[0003] A search revealed a pressure control device for a twin-screw air compressor, disclosed in publication number CN222185106U. The device includes a main unit, an oil separator, and an air tank. The oil separator is equipped with a safety valve, which comprises a valve body. An electric actuator is fixedly connected to the top of the valve body, and a connecting pipe is fixedly connected to the piston rod end of the electric actuator. A movable block is slidably connected within a connecting ring, and a connecting rod is fixedly connected to the bottom of the movable block. A lower positioning seat is fixedly connected to the bottom end of the connecting rod. This air compressor can automatically force the safety valve to open and release pressure in an emergency, making it safer to use.

[0004] However, the pressure control device mentioned above mainly relies on an electric push rod to extend and retract during use. The electric push rod cannot precisely control its stroke during operation, and it cannot detect pressure adjustment in real time, thus affecting the accuracy of pressure adjustment. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure control device for a twin-screw air compressor to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: A pressure control device for a twin-screw air compressor includes an oil separator, which is connected to the air compressor main unit pipeline. A pressure regulating component is fixedly installed on the top of the oil separator. The pressure regulating component includes a valve body. An air tank connector is fixedly provided on one side of the valve body. The air tank connector is connected to the air tank through a conduit. A trapezoidal lead screw is rotatably connected to the top of the valve body. A lead screw seat is threadedly connected to the surface of the trapezoidal lead screw. A positioning seat is provided at the bottom of the valve body. A spring is fixedly installed between the positioning seat and the lead screw seat. An annular pressure sensor is fixedly installed at the connection between the lead screw seat and the spring.

[0007] In the aforementioned twin-screw air compressor pressure control device, two vertically arranged limiting rods are fixedly installed on both sides of the valve body, and limiting holes adapted to the limiting rods are opened on both sides of the lead screw seat, with the limiting rods and limiting holes being connected through each other.

[0008] In the aforementioned twin-screw air compressor pressure control device, through holes are provided on both sides of the top of the positioning seat, and the bottoms of the two limiting rods are inserted and connected to the through holes.

[0009] In the aforementioned twin-screw air compressor pressure control device, each of the two limiting rods is provided with a limiting block that is fixedly connected to the inner wall of the valve body, and the two limiting blocks are arranged symmetrically.

[0010] In the aforementioned twin-screw air compressor pressure control device, the top end of the trapezoidal lead screw is fixedly connected to a hexagonal connector through the valve body, the top of the hexagonal connector is detachably fixedly connected to a hexagonal column, U-shaped frames are fixedly installed on both sides of the outer wall of the valve body, a rotating handwheel is rotatably connected to the middle of the U-shaped frame, and the bottom end of the rotating handwheel is fixedly connected to the top end of the hexagonal column.

[0011] In the aforementioned twin-screw air compressor pressure control device, a display screen is fixedly mounted on the front of the valve body, an annular pressure sensor is electrically connected to the display screen, and a mounting plate is fixedly mounted on the bottom of the valve body, with screw holes on both sides of the top of the mounting plate.

[0012] Compared with the prior art, the advantages of the pressure control device for a twin-screw air compressor of this utility model are as follows: the pressure control device drives the hexagonal column to rotate by rotating the handwheel, which in turn drives the trapezoidal screw to rotate, which in turn drives the screw seat to move downward. During the downward movement of the screw seat, the spring is compressed, and the pressure is monitored in real time by a ring pressure sensor, thereby realizing the pressure regulation of the air compressor. This regulation method is more precise than the traditional regulation method. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a pressure control device for a twin-screw air compressor according to this utility model.

[0014] Figure 2 This is a schematic diagram of the pressure regulating component of a pressure control device for a twin-screw air compressor according to this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of the pressure regulating component of a pressure control device for a twin-screw air compressor according to this utility model.

[0016] In the diagram, 1 is the oil separator; 2 is the pressure regulating assembly; 201 is the valve body; 202 is the gas tank connector; 203 is the U-shaped frame; 204 is the hexagonal column; 205 is the rotary handwheel; 206 is the trapezoidal lead screw; 207 is the hexagonal connecting seat; 208 is the limit rod; 209 is the lead screw seat; 210 is the annular pressure sensor; 211 is the limit block; 212 is the spring; and 213 is the positioning seat. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1-3 As shown, this utility model discloses a pressure control device for a twin-screw air compressor, including an oil separator 1. The oil separator 1 is connected to the air compressor main unit pipeline. A pressure regulating component 2 is fixedly installed on the top of the oil separator 1. The pressure regulating component 2 includes a valve body 201. An air tank connector 202 is fixedly provided on one side of the valve body 201. The air tank connector 202 is connected to the air tank through a conduit. A trapezoidal lead screw 206 is rotatably connected to the top of the valve body 201. A lead screw seat 209 is threadedly connected to the surface of the trapezoidal lead screw 206. A positioning seat 213 is provided at the bottom of the valve body 201. A spring 212 is fixedly installed between the positioning seat 213 and the lead screw seat 209. A ring pressure sensor 210 is fixedly installed at the connection between the lead screw seat 209 and the spring 212.

[0019] Specifically, the pressure control device uses the rotation of the trapezoidal lead screw 206 to drive the lead screw seat 209 to move downward. During the downward movement, the lead screw seat 209 compresses the spring 212, and the pressure is monitored in real time by the annular pressure sensor 210 to achieve pressure regulation of the air compressor. This regulation method is more precise than the traditional regulation method.

[0020] It should be noted that the trapezoidal lead screw 206 of this application has a self-locking effect. When the lead screw seat 209 moves to the set position, the lead screw seat 209 can be fixed by the self-locking function of the trapezoidal lead screw 206.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a pressure control device for a twin-screw air compressor. Two vertically arranged limiting rods 208 are fixedly installed on both sides of the valve body 201. Limiting holes adapted to the limiting rods 208 are opened on both sides of the screw seat 209. The limiting rods 208 and the limiting holes are connected through each other.

[0022] Specifically, by setting the limit rod 208, the lead screw seat 209 can be limited and guided during the movement, ensuring that the movement direction of the lead screw seat 209 is accurate.

[0023] The positioning seat 213 has through holes on both sides of its top end, and the bottom of the two limiting rods 208 are inserted into the through holes.

[0024] Both limit rods 208 are provided with limit blocks 211 that are fixedly connected to the inner wall of valve body 201 on their sides, and the two limit blocks 211 are arranged symmetrically.

[0025] Specifically, by setting the limit block 211, the maximum downward movement distance of the lead screw seat 209 can be limited, avoiding operator misoperation that could damage the internal spring 212 of the valve body 201 and affect the service life of the valve body 201.

[0026] The top of the trapezoidal lead screw 206 passes through the valve body 201 and is fixedly connected to a hexagonal connector 207. The top of the hexagonal connector 207 is detachably fixedly connected to a hexagonal column 204. U-shaped frames 203 are fixedly installed on both sides of the outer wall of the valve body 201. A rotating handwheel 205 is rotatably connected to the middle of the U-shaped frame 203. The bottom end of the rotating handwheel 205 is fixedly connected to the top of the hexagonal column 204.

[0027] A display screen is fixedly mounted on the front of the valve body 201. The annular pressure sensor 210 is electrically connected to the display screen. A mounting plate is fixedly mounted on the bottom of the valve body 201. Screw holes are opened on both sides of the top of the mounting plate.

[0028] Specifically, the installation of the mounting plate facilitates the installation of the valve body 201.

[0029] In specific implementation, when using this pressure control device to adjust the pressure of the air compressor, the handwheel 205 is first manually rotated. Rotating the handwheel 205 drives the hexagonal column 204 to rotate, which in turn drives the trapezoidal lead screw 206 to rotate. The trapezoidal lead screw 206 then drives the lead screw seat 209 to rise and fall. During the rising and falling of the lead screw seat 209, the limit rod 208 limits the movement, and the limit block 211 controls the maximum descent of the lead screw seat 209. During the rising and falling process, the compression deformation of the spring 212 is controlled, and the change in the compression deformation of the spring 212 controls the thrust on the positioning seat 213. During the pressure adjustment process, the pressure adjustment is monitored in real time by the annular pressure sensor 210, which improves the accuracy of the air compressor's pressure adjustment.

[0030] It should be noted that the annular pressure sensor 210 of this application is model "FCLW" and can be purchased directly from the market. This application only uses it without making any improvements, and will not elaborate further here.

[0031] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A pressure control device for a twin-screw air compressor, comprising an oil separator (1), wherein the oil separator (1) is connected to the air compressor main unit pipeline, and a pressure regulating component (2) is fixedly installed on the top of the oil separator (1), characterized in that, The pressure regulating component (2) includes a valve body (201). A gas tank connector (202) is fixedly provided on one side of the valve body (201). The gas tank connector (202) is connected to the gas tank through a conduit. A trapezoidal lead screw (206) is rotatably connected to the top of the valve body (201). A lead screw seat (209) is threadedly connected to the surface of the trapezoidal lead screw (206). A positioning seat (213) is provided at the bottom of the valve body (201). A spring (212) is fixedly installed between the positioning seat (213) and the lead screw seat (209). A ring pressure sensor (210) is fixedly installed at the connection between the lead screw seat (209) and the spring (212).

2. A dual screw air compressor pressure control device according to claim 1, wherein, Two vertically arranged limiting rods (208) are fixedly installed on both sides of the inside of the valve body (201). The screw seat (209) has limiting holes on both sides that are adapted to the limiting rods (208). The limiting rods (208) are connected to the limiting holes.

3. The pressure control device for a twin-screw air compressor according to claim 2, characterized in that, The positioning seat (213) has through holes on both sides of its top end, and the bottoms of the two limiting rods (208) are inserted into the through holes.

4. The pressure control device for a twin-screw air compressor according to claim 2, characterized in that, Both of the limiting rods (208) are provided with limiting blocks (211) that are fixedly connected to the inner wall of the valve body (201) on their sides, and the two limiting blocks (211) are arranged symmetrically.

5. The pressure control device for a twin-screw air compressor according to claim 1, characterized in that, The top of the trapezoidal lead screw (206) passes through the valve body (201) and is fixedly connected to a hexagonal connector (207). The top of the hexagonal connector (207) is detachably fixedly connected to a hexagonal column (204). U-shaped frames (203) are fixedly installed on both sides of the outer wall of the valve body (201). A rotating handwheel (205) is rotatably connected to the middle of the U-shaped frame (203). The bottom end of the rotating handwheel (205) is fixedly connected to the top of the hexagonal column (204).

6. A dual screw air compressor pressure control device according to claim 1, wherein, The valve body (201) has a display screen fixedly mounted on its front side. The annular pressure sensor (210) is electrically connected to the display screen. The valve body (201) has a mounting plate fixedly mounted on its bottom side. The mounting plate has screw holes on both sides of its top end.

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