Air compressor with freeze-drying precision filter function

Abstract

The application relates to an air compressor with a freeze-drying precision filter function and belongs to the technical field of air compressors. The air compressor comprises a mounting frame, the inside of the mounting frame is provided with an air compressor, a primary filter, a freeze dryer and multiple precision filters, the primary filter comprises a filter tank, a sealing cover is fixedly installed on the upper side of the inner wall of the filter tank through bolts, a filter assembly is arranged at the bottom of the sealing cover, the filter assembly comprises a filter screen cylinder fixedly installed at the bottom of the sealing cover, the application can respectively process according to the blockage degree of the filter structure, when the blockage is slight, the device can realize online cleaning without shutdown, the filter material can be reused, the single-use service life is significantly prolonged, the filter material replacement frequency is reduced, and the use cost of the user is reduced, when the blockage is severe, the device will stop and warn the operator to replace the filter material, the problem that the motor is damaged due to blockage is avoided, and the energy saving property during the motor operation is ensured.

Description

Technical Field

[0001] This invention relates to the field of air compressor technology, specifically to an air compressor with a freeze-drying precision filter function. Background Technology

[0002] An air compressor, also known as an air compressor, is a device that converts the mechanical energy of an electric motor into the pressure energy of a gas to generate compressed air. In particular, air compressors are used in oil transportation to generate pressure or thrust by compressed air to push liquids such as oil, hydraulic oil, lubricating oil, and fuel oil from one place to another. This is a typical application of pneumatic transportation and pneumatic pressurization.

[0003] During the operation of an air compressor, in order to prevent oil mist, moisture, and particulate impurities carried in the compressed air from corroding downstream pipelines, a preliminary filtration structure is usually installed between the air compressor and the refrigerated dryer. However, this filtration structure is prone to clogging in the process of intercepting oil and impurities, and traditional devices lack effective monitoring of the clogging status of the filter media. Operators cannot determine the optimal replacement time, which can easily lead to premature replacement, wasting filter media, or premature replacement, resulting in increased system back pressure and decreased airflow efficiency. At the same time, the air compressor is forced to increase the motor output power to overcome resistance, which significantly increases energy consumption.

[0004] To address the aforementioned issues, we propose an air compressor with a freeze-drying precision filter function. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an air compressor with a freeze-drying precision filter function. It can handle different levels of clogging based on the degree of blockage in the filter structure. In cases of minor blockage, the device can perform online cleaning without shutting down, allowing the filter media to be reused, thus significantly extending its service life, reducing the frequency of filter media replacement, and lowering user costs. In cases of severe blockage, the device will stop and alert the operator to replace the filter media, preventing damage to the motor caused by blockage and ensuring energy efficiency during motor operation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an air compressor with a freeze-drying precision filter function, comprising a mounting frame, wherein an air compressor, a primary filter, a freeze dryer, and multiple precision filters are disposed inside the mounting frame, the primary filter comprising a filter canister, and a sealing cover is fixedly installed on the upper side of the inner wall of the filter canister by bolts, and a filter assembly is disposed at the bottom of the sealing cover; The filter assembly includes a filter screen cylinder fixedly installed at the bottom of the sealing cover. An air guide cone is fixedly installed inside the lower side of the filter screen cylinder. An activation groove cylinder is fixedly installed at the top of the air guide cone cylinder. A push groove cylinder is slidably installed on the lower side of the inner wall of the activation groove cylinder. Several filter holes are opened on the periphery of the push groove cylinder and the upper side of the inner wall of the activation groove cylinder. A push cavity is opened on the upper side of the inner wall of the activation groove cylinder. A damping spring is embedded and fixedly installed on the upper side of the inner wall of the push cavity, and a connecting vertical rod is fixedly installed on the telescopic end of the damping spring. Push blocks are fixedly installed on opposite sides of the upper end of the connecting vertical rod, and top rods are rotatably installed on the side of the surface of the two push blocks away from the damping spring. A sliding groove is opened on the inner wall of the push cavity on the side of the top rod, and a squeezing block is rotatably installed on the upper end of the two top rods. A normally open start switch is provided on the inner wall of the two sliding grooves. A cleaning component is provided inside the start groove cylinder on the upper side of the push cavity.

[0007] Furthermore, the air compressor, primary filter, and refrigerated dryer are all mounted inside the mounting bracket using mounting screws. Multiple precision filters are installed at the output end of the refrigerated dryer. The primary filter is connected in series between the output end of the air compressor and the input end of the refrigerated dryer via a pipeline. Thus, the gas compressed by the air compressor first passes through the primary filter for filtration, then enters the refrigerated dryer for drying, and finally passes through multiple precision filters for further filtration before being discharged. This achieves the cooling and drying effect of the compressed gas. The output end of the air compressor is positioned eccentrically on the surface of the primary filter, ensuring that the gas re-enters the primary filter to form a spiral airflow, which helps remove impurities.

[0008] Furthermore, a drain pipe is fixedly installed at the bottom of the filter tank, and the drain pipe is a pipe structure with a valve body. A liquid extraction pipe is provided on the lower side of the surface of the filter tank, and the bottom end of the liquid extraction pipe is spaced apart from the lower side of the inner wall of the filter tank.

[0009] Furthermore, a pressure gauge is provided on the upper side of the filter tank surface, and a pressure relief valve is provided on the side of the filter tank surface located on the side of the pressure gauge.

[0010] Furthermore, the filter cylinder is covered with a filter layer made of fiberglass, and the top of the sealing cover is connected to the input end of the refrigerated dryer. The gas filtered by the filter canister is delivered to the interior of the refrigerated dryer, thereby intercepting dust, rust, and pipe impurities in the gas, preventing blockage of the evaporator, heat exchanger, and throttling capillary tube, preventing impurities from wearing down the compressor and scratching the heat exchange tube walls, reducing oil coking and oil accumulation inside the refrigerated dryer, and preventing a decrease in refrigeration efficiency.

[0011] Furthermore, a protective check valve is provided at the bottom of the filter cylinder, and the opening of the air guide cone decreases sequentially from bottom to top. Utilizing the protective check valve, the internal structure of the air guide cone can be protected when blockage occurs inside the filter cylinder. When blockage occurs in the filter cylinder, the air pressure will push the protective check valve open, thereby cleaning the filter cylinder or stopping the machine.

[0012] Furthermore, the lower end of the connecting vertical rod extends through into the interior of the starting groove cylinder, and the lower end of the connecting vertical rod is fixedly connected to the top of the pushing groove cylinder. The pushing groove cylinder is located on the lower side of the inner wall of the starting groove cylinder under the elastic force of the damping spring, and the filter holes of the pushing groove cylinder and the filter holes of the starting groove cylinder are staggered. The connecting vertical rod is a rod with an enlarged end at the top, which can prevent it from being completely pushed out of the pushing cavity. In this way, when the pushing groove cylinder is pushed by the gas, the moving effect of the pushing groove cylinder can be guaranteed.

[0013] Furthermore, a storage groove is provided on the lower side of the inner wall of the upper sliding groove. The surface of the extrusion block slides in contact with the inner wall of the sliding groove. The storage groove provides storage space for the longer push rod. When the connecting vertical rod continues to move upward, the lower push rod will first activate the normally open start switch on the lower side, thereby activating the cleaning component. The two push blocks have different heights, and the push rods connected to the two push blocks also have different lengths. The push rod connected to the higher push block has a longer length, and the push rod connected to the lower push block has a shorter length. Correspondingly, the two sliding grooves have different depths. The sliding groove near the longer push rod is deeper, and the sliding groove near the shorter push rod is shallower. The two extrusion blocks are slidably connected to the inner wall of the corresponding sliding groove. The normally open start switch located in the deeper sliding groove is configured to shut down the operation of the entire device, and the normally open start switch located in the shallower sliding groove is configured to activate the cleaning component.

[0014] Furthermore, the cleaning assembly includes a rotating cavity formed on the upper side of the inside of the starting groove cylinder. A cleaning motor is fixedly installed on the lower side of the inner wall of the rotating cavity. Three connecting shells are fixedly installed on the output end of the cleaning motor. A support ring is fixedly installed on the upper side of the surface of the starting groove cylinder, and a sliding ring groove is formed on the top of the support ring. A connecting ring is slidably installed on the upper side of the inner wall of the sliding ring groove, and the top of the connecting ring is fixedly connected to the bottom of the multiple connecting shells. A cleaning vertical shell is fixedly installed on the side of each of the three connecting shells away from the cleaning motor. Through holes are provided between the three cleaning vertical shells, the connecting ring and the corresponding connecting shell to ensure the spatial communication between the sliding ring groove and the cleaning vertical shell. A cleaning nozzle is provided on the side of the three cleaning vertical shells away from the cleaning motor. An air guide pipe is fixedly installed between the lower side of the inner wall of the sliding ring groove and the upper side of the inner wall of the starting groove cylinder.

[0015] Furthermore, the output end of the cleaning motor extends through to the top of the starting groove cylinder. The outer surface of the pushing groove cylinder is inclined, and the lower side of the outer surface of the pushing groove cylinder is in close contact with the lower side of the inner wall of the starting groove cylinder. By utilizing the inclined setting of the outer surface of the pushing groove cylinder, after the protective check valve is opened, some of the gas will enter the sliding ring groove through the air guide pipe, thereby ensuring that a jet cleaning effect is provided while cleaning the filter screen cylinder. Several polyurethane brush strips are fixedly installed on the side of the cleaning vertical shell near the filter screen cylinder.

[0016] Compared with the prior art, the present invention provides an air compressor with a freeze-drying precision filter function, which has the following beneficial effects: 1. This device can handle the clogging of the filter structure according to its degree. When the clogging is slight, the device can clean the filter online without stopping the machine, allowing the filter media to be reused, thereby significantly extending the service life of a single use, reducing the number of filter media replacements, and reducing the user's operating costs. When the clogging is severe, the device will stop the machine and alert the operator to replace the filter media, avoiding damage to the motor caused by clogging and ensuring energy efficiency during motor operation.

[0017] 2. By addressing the blockage status accordingly, this device overcomes the shortcomings of traditional devices that rely solely on experience for timed replacement. It prevents filter media waste caused by premature replacement and avoids system performance degradation due to delayed replacement, thus achieving precise control over filter media replacement.

[0018] 3. When the filter is slightly clogged, the device can restore its permeability in a timely manner by cleaning the structure, avoiding the defect of increased motor output power after clogging in traditional devices, and significantly reducing the motor's output energy consumption.

[0019] 4. The device automatically issues a warning when a severe blockage occurs, prompting operators to intervene in a timely manner, thus improving the operational reliability of the entire compressed air delivery cycle. Attached Figure Description

[0020] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a perspective view of the air compressor, primary filter, refrigerated dryer, and precision filter assembly of the present invention. Figure 3 This is a perspective view of the filter tank of the present invention; Figure 4 This is a vertical sectional perspective view of the filter tank of the present invention; Figure 5 This is a vertical sectional perspective view of the filter screen cylinder of the present invention; Figure 6 This is a vertical sectional perspective view of the filter assembly and cleaning assembly of the present invention; Figure 7 for Figure 6 Enlarged structural diagram of section A in the middle; Figure 8 for Figure 6 Enlarged structural diagram of section B in the middle; Figure 9 for Figure 6 Enlarged structural diagram of section C; Figure 10 for Figure 6 Enlarged structural diagram of section D in the middle.

[0021] In the diagram: 1. Mounting bracket; 2. Air compressor; 3. Primary filter; 4. Refrigerated dryer; 5. Precision filter; 6. Filter canister; 601. Drain pipe; 602. Liquid extraction pipe; 603. Pressure gauge; 604. Pressure relief valve; 7. Sealing cap; 8. Filter assembly; 801. Filter screen cylinder; 8011. Filter layer; 8012. Protective check valve; 802. Air guide cone; 803. Starting groove cylinder; 804. Pushing groove cylinder; 805. Filter hole; 806. Pushing chamber; 807. Damping spring; 808. Connecting vertical rod; 809. Pushing block; 810. Top rod; 811. Sliding groove; 8111. Storage groove; 812. Squeezing block; 813. Normally open starting switch; 9. Cleaning components; 901. Rotating chamber; 902. Cleaning motor; 903. Connecting shell; 904. Support ring; 905. Sliding ring groove; 906. Connecting ring; 907. Cleaning vertical shell; 908. Through hole; 909. Cleaning nozzle; 910. Air guide tube; 911. Polyurethane brush strip. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 10This embodiment describes an air compressor with a freeze-drying precision filter function, comprising a mounting frame 1. The mounting frame 1 houses an air compressor 2, a primary filter 3, a refrigerated dryer 4, and multiple precision filters 5. The air compressor 2, primary filter 3, and refrigerated dryer 4 are all fixed to the lower interior of the mounting frame 1 by mounting screws. Multiple precision filters 5 are installed at the output end of the refrigerated dryer 4. The primary filter 3 is connected in series between the output end of the air compressor 2 and the input end of the refrigerated dryer 4 via a pipeline. Thus, the gas compressed by the air compressor 2 is first filtered by the primary filter 3, then enters the refrigerated dryer 4 for freeze-drying, and finally undergoes further precision filtration by the multiple precision filters 5 before being discharged. This achieves cooling, drying, and purification of the compressed gas. To enhance the gas-solid separation effect within the primary filter 3, the connection port between the output end of the air compressor 2 and the primary filter 3 is positioned eccentrically on the surface of the filter tank 6, causing the incoming gas to form a spiral airflow, which helps to remove large particulate impurities using centrifugal force. This application, to highlight the innovative structure, does not elaborate on existing mature technologies such as the refrigerated dryer 4, precision filters 5, and air compressor 2. The primary filter 3 includes a filter tank 6. A sealing cover 7 is fixedly installed on the upper side of the inner wall of the filter tank 6 by bolts. A filter assembly 8 is provided at the bottom of the sealing cover 7. A drain pipe 601 is fixedly installed at the bottom of the filter tank 6. The drain pipe 601 is a pipe structure with a valve body, which is used to periodically discharge the deposited oil and particles. A liquid extraction pipe 602 is provided on the lower side of the surface of the filter tank 6. The bottom end of the liquid extraction pipe 602 is spaced apart from the lower side of the inner wall of the filter tank 6, which is used to extract the separated liquid oil. A pressure gauge 603 is provided on the upper side of the surface of the filter tank 6, which is used to monitor the pressure inside the tank in real time. A pressure relief valve 604 is provided on one side of the pressure gauge 603 for overpressure protection. The filter assembly 8 includes a filter cylinder 801 fixedly installed at the bottom of the sealing cover 7. The filter cylinder 801 is covered with a filter layer 8011, which is made of fiberglass. The top of the sealing cover 7 is connected to the input end of the refrigerated dryer 4. The gas treated by the filter canister 6 is delivered to the interior of the refrigerated dryer 4. The filter layer 8011 can intercept dust, rust, and pipe impurities in the gas, preventing blockage of the evaporator, heat exchanger, and throttling capillary tube of the refrigerated dryer 4. It can also prevent impurities from wearing down the compressor and scratching the heat exchange tube wall, and reduce the coking and oil accumulation of oil inside the refrigerated dryer 4, thereby ensuring refrigeration efficiency. An air guide cone 802 is fixedly installed on the lower side inside the filter cylinder 801. The opening of the air guide cone 802 decreases progressively from bottom to top, serving to guide and accelerate airflow. An activation groove 803 is fixedly installed on the top of the air guide cone 802. A push groove 804 is slidably installed on the lower side of the inner wall of the activation groove 803. Several filter holes 805 are provided on the periphery of the push groove 804 and the upper side of the inner wall of the activation groove 803. In the initial state, the filter holes 805 of the push groove 804 and the filter holes 805 of the activation groove 803 are staggered, i.e., they are not aligned, thereby blocking airflow. The flow passes directly through. A pushing cavity 806 is provided on the upper side of the inner wall of the starting groove 803. A damping spring 807 is embedded and fixedly installed on the upper side of the inner wall of the pushing cavity 806. A connecting vertical rod 808 is fixedly installed on the telescopic end of the damping spring 807. The lower end of the connecting vertical rod 808 extends through into the interior of the starting groove 803 and is fixedly connected to the top of the pushing groove 804. The damping spring 807 provides a downward elastic force to keep the pushing groove 804 in the lower position of the inner wall of the starting groove 803. The top of the connecting vertical rod 808 has an enlarged end to prevent it from completely coming out of the pushing cavity 806. The bottom of the filter cylinder 801 is equipped with a protective check valve 8012. Under normal filtration conditions, the check valve is closed. When the filter cylinder 801 is severely blocked, the gas pressure inside the tank rises to the set value, the check valve is pushed open, and the gas enters the gas guide cone 802, thus protecting the subsequent detection mechanism. Push blocks 809 are fixedly installed on opposite sides of the upper end of the connecting vertical rod 808. The two push blocks 809 have different heights. A push rod 810 is rotatably installed on the side of each push block 809 away from the damping spring 807. The push rod 810 connected to the higher push block 809 is longer, and the push rod 810 connected to the lower push block 809 is shorter. A sliding groove 811 is formed on the inner wall of the pushing cavity 806 on one side of the push rod 810. The two sliding grooves 811 have different depths; the sliding groove 811 closer to the longer push rod 810 is deeper, and the sliding groove 811 closer to the shorter push rod 810 is shallower. The moving groove 811 is relatively shallow. The upper ends of the two push rods 810 are rotatably equipped with squeezing blocks 812. The squeezing blocks 812 are slidably connected to the inner walls of the corresponding sliding grooves 811. The inner walls of the two sliding grooves 811 are equipped with normally open start switches 813. The normally open start switch 813 located in the deeper sliding groove 811 is configured to shut down the operation of the entire device, while the normally open start switch 813 located in the shallower sliding groove 811 is configured to start the operation of the cleaning component 9. The lower side of the inner wall of the upper sliding groove 811 is also provided with a storage groove 8111 to provide movement space for the longer push rods 810. The cleaning assembly 9 includes a rotating cavity 901 located on the upper side of the inside of the starting cylinder 803. A cleaning motor 902 is fixedly installed on the lower side of the inner wall of the rotating cavity 901. Three connecting shells 903 are fixedly installed at the output end of the cleaning motor 902. A support ring 904 is fixedly installed on the upper side of the surface of the starting cylinder 803. A sliding ring groove 905 is formed on the top of the support ring 904. A connecting ring 906 is slidably installed on the upper side of the inner wall of the sliding ring groove 905. The top of the connecting ring 906 is fixedly connected to the bottom of the three connecting shells 903. A cleaning vertical shell 907 is fixedly installed on the side of each of the three connecting shells 903 away from the cleaning motor 902. The three cleaning vertical shells 907 and the connecting rings... A through hole 908 is provided between 906 and the corresponding connecting shell 903 to ensure that the sliding ring groove 905 is connected to the internal space of the cleaning vertical shell 907. A cleaning nozzle 909 is provided on the side of the three cleaning vertical shells 907 away from the cleaning motor 902. Several polyurethane brush strips 911 are fixedly installed on the side of the cleaning vertical shell 907 near the filter screen cylinder 801. An air guide pipe 910 is fixedly installed between the lower side of the inner wall of the sliding ring groove 905 and the upper side of the inner wall of the starting groove cylinder 803. The air guide pipe 910 introduces the gas inside the starting groove cylinder 803 into the sliding ring groove 905, and then sprays it out through the through hole 908, the cleaning vertical shell 907 and the cleaning nozzle 909.

[0024] The working principle of the above embodiments is as follows: When the device is working, the air compressor 2 sends the compressed high-temperature oil-gas mixture into the filter tank 6 of the primary filter 3 through the eccentric interface. Due to the eccentric setting of the air inlet, the gas forms a spiral airflow in the tank. Large particles of impurities and some liquid oil are thrown towards the tank wall under the action of centrifugal force and fall down the wall to the bottom of the tank, and can be discharged through the drain pipe 601. The gas then enters the filter cylinder 801, where the glass fiber filter layer 8011 intercepts impurities such as tiny oil mist and solid particles. The clean gas passes through the filter layer 8011 and enters the filter cylinder 801, and is finally introduced into the refrigerated dryer 4. Under normal conditions, the filter holes 805 of the pushing cylinder 804 and the filter holes 805 of the starting cylinder 803 are staggered, and the gas cannot pass through directly. When the surface of the filter cylinder 801 becomes clogged, the airflow delivered by the air compressor 2 will accumulate in the filter canister 6. If the filter cylinder 801 becomes clogged, the air pressure will gradually increase, thus opening the protective check valve 8012. At this time, the gas accumulates below the push cylinder 804, forming pressure that overcomes the elastic force of the damping spring 807. The push cylinder 804 will move upward, and the filter holes 805 on its periphery will gradually align with the filter holes 805 of the starting cylinder 803, increasing the gas flow. At the same time, the push cylinder 804 drives the push block 809 to move upward through the connecting vertical rod 808. The two push blocks 809 have different heights, and the connected push rods 810 have different lengths. During the upward movement of the connecting vertical rod 808, the pressing block 812 corresponding to the shorter push rod 810 will first touch the normally open start switch 813 located in the shallower sliding groove 811. This switch is configured to start the cleaning assembly 9. At this time, it is a case of slight blockage, and there is no need to stop the machine. The cleaning motor 902 starts, driving the connecting shell 903, connecting ring 906, and three cleaning vertical shells 907 to rotate along the sliding ring groove 905. The cleaning vertical shells 907... The polyurethane brush strip 911 on 07 sweeps the inner wall of the filter cylinder 801, brushing off the attached oil and particulate matter. At the same time, some gas enters the sliding ring groove 905 through the air guide pipe 910, and then is sprayed out through the through hole 908, the cleaning vertical shell 907 and the cleaning nozzle 909, forming an air-blowing assisted cleaning. The brushed and blown impurities fall to the bottom of the tank and are cleaned in a concentrated manner when the filter layer 8011 is replaced next time. This process is an online cleaning without stopping the air compressor, which effectively restores the permeability of the filter layer 8011. If the blockage worsens and the pressure does not drop even after the cleaning component 9 has worked, the pusher cylinder 804 will continue to move upward. The extrusion block 812 corresponding to the longer push rod 810 will continue to move upward, enter the deeper sliding groove 811, and eventually touch the normally open start switch 813 in the groove. This switch is configured to shut down the operation of the entire device, that is, to trigger the air compressor 2 to stop and issue a serious blockage warning. At this time, it is judged to be a severe blockage, and manual replacement of the filter material or deep maintenance is required. Throughout the process, the displacement of the push cylinder 804 precisely corresponds to the degree of clogging of the filter layer 8011, enabling online cleaning to be initiated when there is slight clogging and shutdown alarm to be triggered when there is severe clogging. This avoids the waste caused by frequent filter material replacement and prevents the problems of increased system back pressure and increased air compressor energy consumption caused by delayed replacement, thus ensuring the effectiveness of the energy-saving motor.

[0025] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. An air compressor with a freeze-drying precision filter function, comprising a mounting frame (1), wherein the mounting frame (1) is internally provided with an air compressor (2), a primary filter (3), a freeze dryer (4), and a plurality of precision filters (5), characterized in that: The primary filter (3) includes a filter tank (6), and a sealing cover (7) is fixedly installed on the upper side of the inner wall of the filter tank (6) by bolts, and a filter assembly (8) is provided at the bottom of the sealing cover (7). The filter assembly (8) includes a filter cylinder (801) fixedly installed at the bottom of the sealing cover (7). An air guide cone (802) is fixedly installed inside the lower side of the filter cylinder (801). An activation groove cylinder (803) is fixedly installed at the top of the air guide cone cylinder (802). A push groove cylinder (804) is slidably installed on the lower side of the inner wall of the activation groove cylinder (803). A plurality of filter holes (805) are opened on the periphery of the push groove cylinder (804) and the upper side of the inner wall of the activation groove cylinder (803). A push cavity (806) is opened on the upper side of the inner wall of the activation groove cylinder (803). A damping spring (807) is embedded and fixedly installed on the upper side of the inner wall of the push cavity (806). A connecting vertical rod (808) is fixedly installed at the telescopic end of the damping spring (807). Push blocks (809) are fixedly installed on opposite sides of the upper end of the connecting vertical rod (808), and top rods (810) are rotatably installed on the side of the surface of the two push blocks (809) away from the damping spring (807). A sliding groove (811) is opened on the inner wall of the push cavity (806) on the side of the top rod (810). An extrusion block (812) is rotatably installed on the upper end of the two top rods (810). A normally open start switch (813) is provided on the inner wall of the two sliding grooves (811). A cleaning component (9) is provided inside the start groove cylinder (803) on the upper side of the push cavity (806).

2. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: The air compressor (2), primary filter (3), and refrigerated dryer (4) are all installed inside the mounting bracket (1) by mounting screws, and multiple precision filters (5) are installed at the output end of the refrigerated dryer (4). The primary filter (3) is connected in series between the output end of the air compressor (2) and the input end of the refrigerated dryer (4) through a pipeline.

3. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: The bottom of the filter tank (6) is fixedly installed with a drain pipe (601), and the drain pipe (601) is a pipe structure with a valve body. A liquid extraction pipe (602) is provided on the lower side of the surface of the filter tank (6), and the bottom end of the liquid extraction pipe (602) is spaced apart from the lower side of the inner wall of the filter tank (6).

4. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: A pressure gauge (603) is provided on the upper side of the surface of the filter tank (6), and a pressure relief valve (604) is provided on the side of the filter tank (6) located on the pressure gauge (603).

5. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: The filter cylinder (801) is covered with a filter layer (8011), which is made of glass fiber. The top of the sealing cover (7) is connected to the input end of the refrigerated dryer (4).

6. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: The bottom of the filter cylinder (801) is provided with a protective check valve (8012), and the openings of the air guide cone (802) are arranged in descending order from bottom to top.

7. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: The lower end of the connecting vertical rod (808) extends through into the interior of the starting groove (803), and the lower end of the connecting vertical rod (808) is fixedly connected to the top of the pushing groove (804). The pushing groove (804) is located on the lower side of the inner wall of the starting groove (803) under the elastic force of the damping spring (807), and the filter hole (805) of the pushing groove (804) and the filter hole (805) of the starting groove (803) are staggered. The connecting vertical rod (808) is a rod with an enlarged end at the top.

8. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: A storage groove (8111) is provided on the lower side of the inner wall of the upper sliding groove (811), and the surface of the extrusion block (812) slides in contact with the inner wall of the sliding groove (811).

9. An air compressor with a freeze-drying precision filter function according to claim 1, characterized in that: The cleaning assembly (9) includes a rotating cavity (901) opened on the upper side inside the starting groove (803). A cleaning motor (902) is fixedly installed on the lower side of the inner wall of the rotating cavity (901). Three connecting shells (903) are fixedly installed at the output end of the cleaning motor (902). A support ring (904) is fixedly installed on the upper side of the surface of the starting groove (803). A sliding ring groove (905) is opened on the top of the support ring (904). A connecting ring (906) is slidably installed on the upper side of the inner wall of the sliding ring groove (905). The top of the connecting ring (906) is fixedly connected to the bottom of the multiple connecting shells (903). A cleaning vertical shell (907) is fixedly installed on the side of the three connecting shells (903) away from the cleaning motor (902). A through hole (908) is provided between each of the three cleaning vertical shells (907), the connecting ring (906) and the corresponding connecting shell (903). A cleaning nozzle (909) is provided on the side of each of the three cleaning vertical shells (907) away from the cleaning motor (902). An air guide pipe (910) is fixedly installed between the lower side of the inner wall of the sliding ring groove (905) and the upper side of the inner wall of the starting groove cylinder (803).

10. An air compressor with a freeze-drying precision filter function according to claim 9, characterized in that: The output end of the cleaning motor (902) extends through to the top of the starting trough (803). The outer surface of the pushing trough (804) is inclined, and the lower side of the outer surface of the pushing trough (804) is closely attached to the lower side of the inner wall of the starting trough (803). Several polyurethane brush strips (911) are fixedly installed on the side of the cleaning vertical shell (907) near the filter screen cylinder (801).

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