Screw air compressor with transmission protection function

Abstract

The invention discloses a screw air compressor with a transmission protection function, and relates to the technical field of air compressors, the screw air compressor comprises an air storage tank, a compression box, a preheating energy-saving mechanism, a transmission protection mechanism and a heat energy recovery structure, and is characterized in that through preheating treatment, the humidity of air to be compressed is reduced, and the temperature of the air to be compressed is increased; in the lubricating oil conveying process, cooling treatment on the lubricating oil is accelerated through external airflow, the problems that the viscosity of the lubricating oil is reduced, an oil film is thinned and the like due to the fact that the oil temperature is too high are solved, the use quality of the lubricating oil is improved, abrasion of a screw assembly is reduced, and the transmission protection effect is achieved; heat exchange treatment is carried out in the high-speed gas circulation process, the temperature of the to-be-compressed air is increased while the oil temperature of the high-temperature lubricating oil is reduced, the internal water content of the to-be-compressed air is reduced, and heat recycling of the high-temperature lubricating oil is achieved.

Description

Technical Field

[0001] This invention relates to air compressor technology, specifically a screw air compressor with transmission protection function. Background Technology

[0002] As is generally known, an air compressor is a device that converts mechanical energy into gas pressure energy. It is used to compress air or other gases to provide industrial power or process gas sources. Its core function is to increase gas pressure by increasing the density of gas molecules. It is widely used in industrial production, construction, energy storage, and other fields. Screw air compressors are a common type of compressor. During operation, they achieve their pressure by changing the volume of the grooves of the parallel meshing male and female rotors inside the casing. The rotation of the rotor pair within the precisely fitted casing causes the gas between the rotor grooves to continuously produce periodic volume changes, pushing the gas along the rotor axis from the intake side to the exhaust side, completing the three working processes of intake, compression, and exhaust.

[0003] The shortcomings of existing technologies are that, during the operation of screw air compressors, especially in applications with high air humidity, the excessive moisture in the air drawn into the compressor chamber alters the medium characteristics during compression, increasing the motor load. High-humidity air condenses into water during compression; since water is much denser than air, the resistance increases when the screw compresses the air-water mixture, further increasing motor energy consumption. Furthermore, for oil-lubricated screw air compressors, the screw assembly operates within lubricating oil. After prolonged continuous operation, the oil temperature rises, and the natural heat dissipation within the compressor chamber is poor. Excessive oil temperature leads to decreased oil viscosity and a thinner oil film, which can easily affect the screw assembly inside the compressor chamber, accelerating its wear. Moreover, with excessive wear of the screw assembly, compressed air leakage can occur, causing the compressed high-pressure air to flow back to the low-pressure side. The motor then needs to repeatedly compress this gas, resulting in ineffective energy consumption and further increasing motor energy consumption. Summary of the Invention

[0004] The purpose of this invention is to provide a screw air compressor with transmission protection function to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: comprising: an air storage tank, wherein a motor is fixedly installed on one side of the top of the air storage tank, the motor being used to provide power to the air compression assembly, and a control module is assembled on the side of the air storage tank, the control module being used to regulate the operating status of each component of the screw air compressor;

[0006] A compression chamber is fixedly installed on the top of the air storage tank and on the side close to the motor. The compression chamber has a built-in screw rotor for compressing air. The power output end of the motor is connected to the power input end of the compression chamber. The motor outputs power to drive the screw rotor inside the compression chamber to rotate, so as to compress the air and deliver the compressed air to the air storage tank for storage.

[0007] A preheating and energy-saving structure is installed on the top of the compressor box. An air intake treatment tank is connected to the top of the air intake end of the compressor box. An air supply pipe is fixedly installed at the bottom of the air intake treatment tank. The end of the air supply pipe away from the air intake treatment tank is connected to the air intake end of the compressor box. The air to be compressed enters the compressor box from the outside through the air intake treatment tank for purification and heating treatment. A mounting base is fixed on the inner wall of the air intake treatment tank near the end of the air supply pipe. An electric heating ring network is connected inside the mounting base. The installation position of the electric heating ring network corresponds to the end position of the air supply pipe so as to heat the air to be compressed through the electric heating ring network.

[0008] As a further description of the above technical solution: In the transmission protection mechanism, a circulating oil tank for storing lubricating oil is provided at the end side of the air tank. An oil-gas separator is provided horizontally at the discharge end of the compressor. The oil discharge end of the oil-gas separator is connected to the circulating oil tank through a return oil pipe, and the exhaust end of the oil-gas separator is connected to the air inlet end of the air tank through a pipeline. An oil discharge pipe extending to the outside is installed at the discharge end of the circulating oil tank. A conveying pipe connected to the oil inlet end of the compressor is installed at the discharge end of the oil discharge pipe, and heat dissipation rings A are arranged at intervals on the outer circumference of the conveying pipe.

[0009] As a further description of the above technical solution: a heat recovery mechanism is installed inside the air intake treatment tank to perform heat exchange treatment on the compressed air and the lubricating oil to be cooled. A hollow heat exchange tube is provided on the top of the mounting base. An inlet pipe connected to the inside of the hollow heat exchange tube is installed at the end of the oil drain pipe, and an outlet pipe connected to the oil inlet of the compression box is installed on the side of the hollow heat exchange tube. Heat dissipation rings B are fixed at equal intervals on the inner wall of the hollow heat exchange tube.

[0010] As a further description of the above technical solution: the end of the air intake treatment tank is provided with an air intake pipe for drawing in external air, and an air filter for purifying the drawn-in air is installed inside the air intake treatment tank near the end of the air intake pipe.

[0011] As a further description of the above technical solution: the inner wall of the mounting base is welded with a support ring, and the support ring has a ring structure. The electric heating ring is arranged on the top of the support ring, and the support ring plays a role in supporting and fixing the electric heating ring.

[0012] As a further description of the above technical solution: the pump body is equipped with an oil suction pipe extending to the bottom of the circulating oil tank, and the pump body draws out the lubricating oil inside the circulating oil tank through the oil suction pipe when it is running.

[0013] As a further description of the above technical solution: the hollow heat exchange tube is staggered with guide plates inside, and multiple sets of guide plates cooperate in the lubricating oil flow area inside the hollow heat exchange tube to form a guide cavity structure, ensuring that the lubricating oil entering the hollow heat exchange tube can flow along the cavity.

[0014] As a further description of the above technical solution: a three-way valve for controlling the return flow of lubricating oil is installed at the connection between the end of the inlet pipe and the end of the outlet pipe, and the outlet end of the hollow heat exchanger tube is provided with an outlet pipe that is connected to the inlet end of the compression box, and the end of the delivery pipe is connected to the inside of the outlet pipe.

[0015] As a further description of the above technical solution: the heat dissipation ring B has a vertically extending guide hole inside the heat dissipation ring B, and the guide holes of adjacent heat dissipation rings B inside the hollow heat exchange tube are staggered to improve the heating and dehumidification effect of the air.

[0016] As a further description of the above technical solution, heating wires are installed at the bottom of each heat dissipation ring B, and the control terminal of the control module is connected to the control terminals of the motor, the heating ring network, the pump body, and the heating wires.

[0017] The present invention has the following advantages:

[0018] 1. Preheating and Energy-Saving Structure: When the motor runs, it drives the screw assembly inside the compressor to rotate. Air is drawn in from the outside through the air intake treatment tank, compressed, and then stored in the air storage tank. The air intake treatment tank is connected to the air inlet of the compressor via an air supply pipe. Air purified inside the air intake treatment tank enters the air supply pipe through the mounting base. When the air compressor is used in environments with high humidity, such as near the sea or during the rainy season, the electric heating ring can be activated during operation to generate heat. The air drawn in from the air intake treatment tank is heated by the electric heating ring as it enters the compressor. This preheating process reduces the humidity of the air to be compressed and increases its temperature. During subsequent compression, this reduces the screw's operating resistance, accelerates the compression process, and ultimately reduces the motor's energy consumption.

[0019] 2. Transmission Protection Mechanism: An oil-gas separator is installed at the discharge end of the compressor. After the oil-gas mixture discharged from the compressor is separated by the oil-gas separator, the air is discharged into the air storage tank for storage, and the lubricating oil is recovered and discharged into the circulating oil tank through the return oil pipe. During the operation of the air compressor, the pump inside the circulating oil tank operates, drawing out the lubricating oil that has entered the circulating oil tank and returning it to the oil inlet end of the compressor through the delivery pipe. The outer circumference of the delivery pipe is equipped with a heat dissipation ring A, which can accelerate the cooling of the lubricating oil during the lubricating oil transportation process by using external airflow, reducing its working temperature and avoiding problems such as decreased lubricating oil viscosity and thinning of the oil film caused by excessive oil temperature. Through the external circulation pipeline, the quality of lubricating oil is improved, the wear of the screw assembly is reduced, and the transmission protection function is achieved.

[0020] 3. Heat Recovery Mechanism: During the operation of the air compressor, the temperature of the lubricating oil will increase with the continuous increase of usage time. When the temperature of the lubricating oil returning to the compressor reaches a certain range, the three-way valve can be switched so that the extracted high-temperature lubricating oil is discharged into the hollow heat exchange tube through the drain pipe and the inlet pipe. The hollow heat exchange tube is located inside the air intake treatment tank. The high-temperature lubricating oil entering the tube will flow along the internal cavity and be cooled by the metal heat dissipation ring B. The gas drawn into the compressor will first pass through the hollow heat exchange tube. When entering the hollow heat exchange tube, most of the gas passes through the guide holes set inside each set of heat dissipation ring B. Heat exchange occurs during the high-speed gas flow, which reduces the temperature of the high-temperature lubricating oil and increases the temperature of the air to be compressed, reducing its internal water content. This realizes the heat recovery and reuse of the high-temperature lubricating oil, which can greatly reduce the working energy consumption of the electric heating ring network and achieve further energy saving. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the air intake treatment tank provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the mounting base provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the hollow heat exchange tube and heat dissipation ring B structure provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the hollow heat exchange tube provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the circulating oil tank provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the delivery pipe and heat dissipation ring A provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Air tank; 2. Motor; 3. Compressor; 4. Control module; 5. Air intake treatment tank; 501. Air intake pipe; 502. Air supply pipe; 503. Air filter; 504. Mounting base; 505. Support ring; 506. Electric heating ring network; 6. Circulating oil tank; 601. Oil-gas separator; 602. Oil return pipe; 603. Pump body; 604. Oil extraction pipe; 605. Oil discharge pipe; 606. Delivery pipe; 607. Heat dissipation ring A; 7. Hollow heat exchange tube; 701. Guide plate; 702. Inlet pipe; 703. Three-way valve; 704. Discharge pipe; 705. Heat dissipation ring B; 706. Guide hole; 8. Heating wire. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Please see Figures 1-7 This invention provides a screw air compressor with transmission protection function: including: an air tank 1, a motor 2 fixedly installed on one side of the top of the air tank 1, the motor 2 being used to provide power to the air compression assembly, and a control module 4 assembled on the side of the air tank 1, the control module 4 being used to regulate the operating status of each component of the screw air compressor;

[0033] Compression box 3 is fixedly installed on the top of air tank 1 and on the side close to motor 2. Inside compression box 3 is a screw rotor for compressing air. The power output end of motor 2 is connected to the power input end of compression box 3. The screw rotor inside compression box 3 is driven to rotate by the power output of motor 2 to compress air and deliver the compressed air to the inside of air tank 1 for storage.

[0034] A preheating and energy-saving structure is installed on the top of the compressor box 3. An air intake treatment tank 5 is connected to the top of the air intake end of the compressor box 3. An air supply pipe 502 is fixedly installed at the bottom of the air intake treatment tank 5. The end of the air supply pipe 502 away from the air intake treatment tank 5 is connected to the air intake end of the compressor box 3. The air to be compressed is purified and heated by the air intake treatment tank 5. An installation base 504 is fixed on the inner wall of the air intake treatment tank 5 near the end of the air supply pipe 502. An electric heating ring network 506 is connected inside the installation base 504. The installation position of the electric heating ring network 506 corresponds to the end position of the air supply pipe 502 so as to heat the air to be compressed by the electric heating ring network 506.

[0035] It should be noted that when the air compressor is used in environments with high humidity, such as near the sea or during the rainy season, the electric heating ring network 506 can be turned on during operation to generate heat. The air drawn into the intake treatment tank 5 will be heated by the electric heating ring network 506 during the process of being discharged into the compression box 3. Through preheating, the humidity of the air to be compressed is reduced and its temperature is increased. In the subsequent compression process, the screw running resistance is reduced and the compression process is accelerated, thereby reducing the energy consumption of the motor 2.

[0036] In another embodiment of the present invention: a transmission protection mechanism, a circulating oil tank 6 for storing lubricating oil is provided at the end side of the air tank 1, an oil-gas separator 601 is provided horizontally at the discharge end of the compression tank 3, the oil discharge end of the oil-gas separator 601 is connected to the circulating oil tank 6 through the return oil pipe 602, and the exhaust end of the oil-gas separator 601 is connected to the air inlet end of the air tank 1 through a pipeline, an oil discharge pipe 605 extending to the outside is installed at the discharge end of the circulating oil tank 6, a conveying pipe 606 connected to the oil inlet end of the compression tank 3 is installed at the discharge end of the oil discharge pipe 605, and heat dissipation rings A607 are arranged at intervals on the outer periphery of the conveying pipe 606.

[0037] It should be noted that during the operation of the air compressor, the pump body 603 inside the circulating oil tank 6 operates, drawing out the lubricating oil that has entered the circulating oil tank 6 and returning it to the oil inlet end of the compression box 3 through the delivery pipe 606. The outer periphery of the delivery pipe 606 is provided with a heat dissipation ring A607, which can accelerate the cooling of the lubricating oil during the lubricating oil transportation process by using external airflow, reducing its operating temperature, and avoiding problems such as decreased lubricating oil viscosity and thinning of the oil film caused by excessively high oil temperature. Through the external circulation pipeline, the quality of lubricating oil is improved, the wear of the screw assembly is reduced, and the transmission protection function is played.

[0038] In another embodiment of the present invention: a heat recovery mechanism is provided inside the air intake treatment tank 5 for heat exchange treatment of compressed air and lubricating oil to be cooled. A hollow heat exchange tube 7 is provided on the top of the mounting base 504. An inlet pipe 702 connected to the inside of the hollow heat exchange tube 7 is installed at the end of the oil drain pipe 605, and an outlet pipe 704 connected to the oil inlet of the compression box 3 is installed on the side of the hollow heat exchange tube 7. Heat dissipation rings B705 are fixed at equal intervals on the inner wall of the hollow heat exchange tube 7.

[0039] It should be noted that the gas drawn into the compressor box 3 first passes through the hollow heat exchange tube 7. When entering the hollow heat exchange tube 7, most of the gas passes through the guide holes 706 set inside each heat dissipation ring B705 in sequence. During the high-speed gas flow, heat exchange is carried out, which reduces the oil temperature of the high-temperature lubricating oil and increases the temperature of the air to be compressed, reduces its internal water content, and realizes the heat recovery and reuse of the high-temperature lubricating oil.

[0040] In another embodiment of the present invention: an air intake pipe 501 for drawing in external air is provided at the end of the air intake treatment tank 5, and an air filter 503 for purifying the drawn-in air is installed inside the air intake treatment tank 5 near the end of the air intake pipe 501.

[0041] It should be noted that when the air compressor is running, the air intake treatment tank 5 draws in external air through the air intake pipe 501 and delivers it to the compression box 3 for subsequent compression processing. After the external air enters the air intake treatment tank 5, it first passes through the air filter 503, which can effectively purify the incoming air and prevent impurities from entering the compressor.

[0042] In another embodiment of the present invention: a support ring 505 is welded to the inner wall of the mounting base 504 and the support ring 505 has a ring structure. The electric heating ring network 506 is arranged on the top of the support ring 505, and the support ring 505 plays a role in supporting and fixing the electric heating ring network 506.

[0043] It should be noted that the structure of the support ring 505 is designed according to the outer ring specifications of the electric heating ring network 506. The support ring 505 structure, which is fixed inside the mounting base 504, can support and position the electric heating ring network 506.

[0044] In another embodiment of the present invention: the pump body 603 is equipped with an oil suction pipe 604 extending to the bottom of the circulating oil tank 6. When the pump body 603 is running, the lubricating oil inside the circulating oil tank 6 is drawn out through the oil suction pipe 604.

[0045] It should be noted that the high-temperature oil discharged from the oil-gas separator 601 will be discharged into the circulating oil tank 6 through the return oil pipe 602. When the pump body 603 is running, it will draw out the high-temperature lubricating oil through the oil extraction pipe 604 and then transport it to a suitable cooling pipeline through the oil discharge pipe 605 for cooling treatment.

[0046] In another embodiment of the present invention: the hollow heat exchange tube 7 has guide plates 701 welded in an alternating manner inside. Multiple sets of guide plates 701 cooperate in the lubricating oil flow area inside the hollow heat exchange tube 7 to form a guide cavity structure, so as to ensure that the lubricating oil entering the hollow heat exchange tube 7 can flow along the cavity.

[0047] It should be noted that guide plates 701 are fixed interlaced inside the hollow heat exchange tube 7. The openings between adjacent groups of guide plates 701 are staggered, so that a guide cavity structure is formed inside the hollow heat exchange tube 7 through the guide plates 701 in the lubricating oil flow area. The lubricating oil input by the inlet pipe 702 will flow along the cavity and be discharged from the outlet pipe 704.

[0048] In another embodiment of the present invention: a three-way valve 703 for controlling the return flow of lubricating oil is installed at the connection between the end of the inlet pipe 702 and the end of the outlet pipe 605. The outlet end of the hollow heat exchanger 7 is provided with an outlet pipe 704 that is connected to the inlet end of the compression box 3, and the end of the conveying pipe 606 is connected to the inside of the outlet pipe 704.

[0049] In another embodiment of the present invention: a guide hole 706 is provided vertically inside the heat dissipation ring B705, and the guide holes 706 of adjacent heat dissipation rings B705 inside the hollow heat exchange tube 7 are staggered to improve the heating and dehumidification effect of the air.

[0050] It should be noted that the structure of the guide hole 706 facilitates the passage of gas through the interior of the heat dissipation ring B705. The guide holes 706 inside each group of adjacent heat dissipation rings B705 are staggered, so that when the air passes through the interior of each group of heat dissipation rings B705 in sequence, it can fully contact the heat dissipation rings B705, thereby improving the heat exchange effect.

[0051] In another embodiment of the present invention, heating wires 8 are installed at the bottom of the heat dissipation ring B705, and the control terminal of the control module 4 is connected to the control terminal of the motor 2, the heating ring network 506, the pump body 603 and the heating wires 8.

[0052] It should be noted that a heating wire 8 structure is also provided at the bottom of the heat dissipation ring B705. When the air compressor is started in a low-temperature environment, the heating wire 8B can be turned on. The heating wire 8B can heat the heat dissipation ring B705, thereby raising the temperature of the incoming air and circulating lubricating oil in the initial stage of air compressor operation, achieving the purpose of lubricating oil preheating, avoiding thermal deformation of the screw due to excessive temperature difference, and avoiding problems such as poor oil fluidity and insufficient lubrication caused by excessively low oil temperature.

[0053] During operation, motor 2 drives the screw assembly inside compressor box 3 to rotate, drawing air in from the outside through air intake treatment tank 5. After continuous compression, the air is delivered to air storage tank 1 for storage. Air intake treatment tank 5 is connected to the air intake end of compressor box 3 through air supply pipe 502. The air purified inside air intake treatment tank 5 enters air supply pipe 502 through mounting base 504. When the air compressor is used in environments with high humidity, such as near the sea or during the rainy season, the electric heating ring network 506 can be turned on during operation to generate heat. The air drawn into air intake treatment tank 5 will be heated by electric heating ring network 506 during the process of being discharged into compressor box 3, thus preheating the air. The compressor processes the air to be compressed, reducing its humidity and increasing its temperature. This reduces screw resistance and accelerates the compression process, thereby reducing the energy consumption of motor 2. An oil-gas separator 601 is installed at the discharge end of the compressor 3. The oil-gas mixture discharged from the compressor 3 is separated by the oil-gas separator 601. Air is discharged into the air storage tank 1 for storage, while lubricating oil is recovered and discharged into the circulating oil tank 6 via the return oil pipe 602. During compressor operation, the pump 603 inside the circulating oil tank 6 operates, drawing out the lubricating oil that has entered the circulating oil tank 6. The oil then flows back to the oil inlet end of the compressor 3 via the delivery pipe 606. The outer circumference of the delivery pipe 606 is covered with... Equipped with a heat dissipation ring A607, the lubricating oil is cooled more quickly during transport using external airflow, reducing its operating temperature and preventing problems such as decreased viscosity and thinning of the oil film caused by excessively high oil temperature. The external circulation pipeline improves the quality of lubricating oil use, reduces wear on the screw assembly, and provides transmission protection. During the operation of the air compressor, the lubricating oil temperature increases with usage time. When the temperature of the returning lubricating oil reaches a certain range, the three-way valve 703 can be switched, allowing the extracted high-temperature lubricating oil to be discharged through the drain pipe 605 and inlet pipe 702 into the hollow heat exchange tube 7. The hollow heat exchange tube 7 is located... Inside the intake treatment tank 5, the high-temperature lubricating oil flowing into it circulates along the internal cavity, while the metal heat dissipation rings B705 provide heat dissipation. The gas drawn in by the compressor 3 first passes through the hollow heat exchange tube 7. When entering the hollow heat exchange tube 7, most of the gas passes through the guide holes 706 set inside each set of heat dissipation rings B705. During the high-speed gas flow, heat exchange occurs, reducing the temperature of the high-temperature lubricating oil and increasing the temperature of the air to be compressed, thus reducing its internal water content. This achieves heat recovery and reuse of the high-temperature lubricating oil, which can greatly reduce the working energy consumption of the electric heating ring network 506, achieving further energy saving.

[0054] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A screw air compressor with transmission protection function, comprising: An air storage tank (1) is provided with a motor (2) fixedly installed on one side of the top of the air storage tank (1). The motor (2) is used to provide power to the air compression assembly. A control module (4) is installed on the side of the air storage tank (1). The control module (4) is used to regulate the operating status of each component of the screw air compressor. The feature is that: The compression box (3) is fixedly installed on the top of the air storage tank (1) and on the side close to the motor (2). The compression box (3) has a built-in screw rotor for compressing air. The power output end of the motor (2) is connected to the power input end of the compression box (3). The screw rotor inside the compression box (3) is driven to rotate by the power output of the motor (2) to compress the air and deliver the compressed air to the air storage tank (1) for storage. A preheating and energy-saving structure is set on the top of the compressor box (3). An air intake treatment tank (5) is connected to the top of the air intake end of the compressor box (3). An air supply pipe (502) is fixedly installed at the bottom of the air intake treatment tank (5). The end of the air supply pipe (502) away from the air intake treatment tank (5) is connected to the air intake end of the compressor box (3). The air to be compressed is purified and heated by the air intake treatment tank (5) entering the compressor box (3) from the outside. An installation seat (504) is fixed on the inner wall of the air intake treatment tank (5) near the end of the air supply pipe (502). An electric heating ring (506) is connected inside the installation seat (504). The installation position of the electric heating ring (506) corresponds to the end position of the air supply pipe (502) so as to heat the air to be compressed by the electric heating ring (506).

2. A screw air compressor with transmission protection function according to claim 1, characterized in that, The transmission protection mechanism includes a circulating oil tank (6) for storing lubricating oil at the end side of the air tank (1), an oil-gas separator (601) for horizontally discharging the compressor (3), an oil-gas separator (601) for discharging the oil at the end of the oil tank (1) for discharging the oil at the end of the oil tank (601) for returning the oil at the end of the oil tank (602) for discharging the oil at the end of the oil tank (601) for discharging the oil at the end of the oil tank (601) for discharging the oil at the end of the oil tank (601) for discharging the oil at the end of the oil tank (605) for discharging the oil at the end of the oil tank (605) for discharging the oil at the end of the oil tank (605) for discharging the oil at the end of the oil tank (605) for discharging the oil at the end of the oil tank (605) for discharging the oil at the end of the oil tank (3) for discharging the oil at the end of the oil tank (606) for discharging the oil at the end of the oil tank (606) for discharging the oil at the end of the oil tank (607) for discharging the oil at the end of the oil tank (607) for discharging the oil at the end of the oil tank (605) for discharging the oil at the end of the oil tank (1) for discharging the oil at the end of the oil tank (1) for discharging the oil at the end of the oil tank (605 ...

3. A screw air compressor with transmission protection function according to claim 1, characterized in that, The heat recovery mechanism is installed inside the air intake treatment tank (5) to perform heat exchange treatment on the compressed air and the lubricating oil to be cooled. The top of the mounting base (504) is provided with a hollow heat exchange tube (7). The end of the oil drain pipe (605) is provided with an inlet pipe (702) that communicates with the inside of the hollow heat exchange tube (7), and the side of the hollow heat exchange tube (7) is provided with a discharge pipe (704) that is connected to the oil inlet of the compression box (3). The inner wall of the hollow heat exchange tube (7) is fixed with heat dissipation rings B (705) at equal intervals.

4. A screw air compressor with transmission protection function according to claim 1, characterized in that, The air intake treatment tank (5) is provided with an air intake pipe (501) for drawing in external air at its end, and an air filter (503) for purifying the drawn-in air is installed inside the air intake treatment tank (5) near the end of the air intake pipe (501).

5. A screw air compressor with transmission protection function according to claim 1, characterized in that, The mounting base (504) has a ring (505) welded to its inner wall, and the ring (505) has a ring structure. The electric heating ring (506) is arranged on the top of the ring (505), and the ring (505) plays a role in supporting and fixing the electric heating ring (506).

6. A screw air compressor with transmission protection function according to claim 2, characterized in that, The pump body (603) is equipped with an oil extraction pipe (604) extending to the bottom of the circulating oil tank (6). When the pump body (603) is running, the lubricating oil inside the circulating oil tank (6) is extracted through the oil extraction pipe (604).

7. A screw air compressor with transmission protection function according to claim 3, characterized in that, The hollow heat exchange tube (7) has staggered flow guide plates (701) inside. Multiple sets of flow guide plates (701) cooperate to form a flow guide cavity structure in the lubricating oil flow area inside the hollow heat exchange tube (7), ensuring that the lubricating oil entering the hollow heat exchange tube (7) can flow along the cavity.

8. A screw air compressor with transmission protection function according to claim 3, characterized in that, A three-way valve (703) for controlling the return flow of lubricating oil is installed at the connection between the end of the inlet pipe (702) and the end of the outlet pipe (605). The outlet end of the hollow heat exchange tube (7) is provided with an outlet pipe (704) that is connected to the inlet end of the compression box (3), and the end of the delivery pipe (606) is connected to the inside of the outlet pipe (704).

9. A screw air compressor with transmission protection function according to claim 3, characterized in that, The heat dissipation ring B (705) has a vertically extending guide hole (706) that penetrates the interior of the heat dissipation ring B (705). The guide holes (706) of adjacent heat dissipation rings B (705) inside the hollow heat exchange tube (7) are staggered to improve the heating and dehumidification effect of the air.

10. A screw air compressor with transmission protection function according to claim 9, characterized in that, Each heat dissipation ring B (705) is equipped with a heating wire (8) at its bottom. The control module (4) is connected to the control terminals of the motor (2), the heating ring network (506), the pump body (603), and the heating wire (8).

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