Air compression device

Abstract

The invention provides an air compression device, and relates to the field of air compressors, the air compression device comprises a screw machine, a water tank, a first water storage cavity, a second water storage cavity, an evaporator, a first communication cavity, a second communication cavity, a device box body and a fan, the fan assists in air suction for the screw machine, the power consumption of a screw machine head is reduced, and the air compression efficiency is improved. Liquid water generated by compressed air circulates among the first water storage cavity, the second water storage cavity and the water tank, meanwhile, the screw machine head is cooled, redundant high-temperature liquid water is discharged, and energy consumption needed by cyclic utilization of the high-temperature liquid water is reduced; and after shutdown, the screw machine head and the meshing chamber are purged, so that the screw machine head and the meshing chamber can be kept dry, rusting is avoided, and the manufacturing and maintenance cost is greatly reduced. Due to the fact that the compressed air is relatively dry after condensation treatment, the air outlet quality is guaranteed and improved, meanwhile, a freeze dryer does not need to be arranged at the rear end, and the site space and the installation cost are greatly saved.

Description

Technical Field

[0001] This invention relates to the field of air compressor technology, and more particularly to an air compression device. Background Technology

[0002] Screw air compressors are the most mainstream air compression equipment in industrial manufacturing. They are the core power source for providing stable and efficient compressed air, and are widely applicable to the continuous air demand in industries such as machining, automotive manufacturing, electronics and semiconductors, and energy and chemical engineering. Their core functionality involves a pair of meshing male and female rotors to compress air. Compared to traditional piston compressors, they offer advantages such as stable operation, continuous exhaust, superior energy efficiency, and easy maintenance.

[0003] During operation, outside air enters the compressor intake after dust and impurities are removed by the air filter. As the male and female rotors rotate synchronously inside the casing, the enclosed volume formed by the rotor teeth and the inner wall of the casing gradually decreases, and the intake air is continuously compressed, with the pressure and temperature rising synchronously to complete the compression process. The resulting high-temperature and high-pressure compressed air is discharged from the exhaust end, providing the power basis for the subsequent air consumption system.

[0004] Current screw air compressors inject special lubricating oil or water into the rotor cavity during compression to cool the compressed air, seal rotor gaps, and reduce mechanical wear. However, some drawbacks still exist, such as: (1) Special lubricating oil is used for cooling and lubrication. It is difficult to separate oil and gas at high temperature, which can easily lead to serious oil and water pollution in compressed air. Under high temperature conditions, the lubricating oil is prone to coking, which can lead to failures such as jamming of the machine head.

[0005] (2) Using water instead of lubricating oil for cooling and lubrication requires constant replenishment of water. When the machine is stopped, prolonged contact between water and the machine head can easily lead to corrosion of the machine head and reduce its service life. If rust-proof materials are used to make the machine head, the production cost of the device will be higher. Summary of the Invention

[0006] The present invention provides an air compression device to solve at least one of the technical problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides an air compression device, comprising: Screw compressor; A water tank is located above the screw compressor; the meshing chamber of the screw compressor is connected to the water tank. The first water storage cavity is connected to the meshing chamber; The second water storage chamber; both the first water storage chamber and the second water storage chamber are connected to the water tank through a return water pipe; and both the first water storage chamber and the second water storage chamber are equipped with a drain pipe; Refrigeration system; A connecting cavity is disposed above the first water storage cavity and the second water storage cavity, and is connected to the first water storage cavity and the second water storage cavity respectively through the evaporator of the refrigeration system; The second connecting cavity is located above the second water storage cavity. The second connecting cavity is connected to the second water storage cavity through the evaporator of the refrigeration system and is equipped with an exhaust pipe.

[0008] In a preferred embodiment of the above-mentioned air compression device, the combined structure of the second water storage chamber and the first communicating chamber is provided in one or more sets; When multiple sets of combined structures are provided, each of the second water storage chambers is connected to the first water storage chamber through the first connecting chamber and the first evaporator.

[0009] In a preferred embodiment of the above-mentioned air compression device, the second connecting cavity and the second water storage cavity are connected through one or more of the second evaporators.

[0010] In a preferred embodiment of the above-mentioned air compression device, the first water storage chamber and the second water storage chamber are equipped with water level gauges and a drainage water level line is set. The drainage pipe is provided on the side wall above the water level line of the first water storage cavity and the second water storage cavity; The side walls below the water level lines of the first and second water storage chambers are connected to the water tank via a return water pipe.

[0011] In a preferred embodiment of the aforementioned air compression device, a fan is further included; the fan is disposed above the screw compressor, and its outlet is connected to the inlet of the meshing chamber.

[0012] In a preferred embodiment of the above-mentioned air compression device, the engagement chamber is provided with a head drain port and is equipped with an electric regulating valve. The inlet and outlet of the meshing chamber are respectively equipped with one-way valve one and one-way valve two.

[0013] In a preferred embodiment of the aforementioned air compression device, the refrigeration system further includes a compressor, a primary condenser, a secondary condenser, and a bypass valve; The compressor's inlet is connected to evaporator one and evaporator two via refrigerant return pipes to compress the circulating refrigerant. The compressor's outlet is connected to the primary condenser. The primary condenser's outlet is equipped with a main return pipe and a branch pipe. The main return pipe is connected to evaporator one and evaporator two via refrigerant capillary tubes, forming the main circulation path for the refrigerant. The branch pipe is equipped with a bypass valve and is sequentially connected to the secondary condenser and the compressor, forming a branch circulation path for the refrigerant.

[0014] In a preferred embodiment of the above-described air compression device, the refrigeration system further includes a dryer filter; The drying filter is installed on the main return pipe and is used for drying the refrigerant.

[0015] In a preferred embodiment of the aforementioned air compression device, an electric regulating valve one, a return water filter, and an electric regulating valve two are also included; The return water pipeline includes a return water pipe one and a return water pipe two that are respectively connected to the first water storage chamber and the second water storage chamber. The confluence of the return water pipe one and the return water pipe two is connected to the inlet of the electric regulating valve one. The outlet of the electric regulating valve one is connected to the inlet of the return water filter. The outlet of the filter is connected to the cooling water inlet of the water tank. The second electric regulating valve is installed within the pipe section of the first return water pipe and is used to control the flow of water within the first return water pipe.

[0016] In a preferred embodiment of the above-mentioned air compression device, the drainage pipeline includes a drainage pipe one and a drainage pipe two that connect the first water storage chamber and the second water storage chamber; The bottom of the water tank is equipped with a drain pipe. One-way valve 3 is installed at the inlet end of each of the drain pipes 1, 2 and 3.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: A complete water return system is formed by connecting the water tank, the meshing chamber of the screw compressor, and the first and second water storage chambers. Initial liquid water in the water tank enters the meshing chamber to cool the compressor head and compressed air. Simultaneously, high-pressure air and liquid water, formed by compression in the meshing chamber, flow into the first water storage chamber. Excess high-temperature liquid water in the first water storage chamber is continuously discharged, reducing the energy cost required for high-temperature liquid water recycling. Meanwhile, the high-pressure air is cooled by the evaporator, and the resulting low-temperature liquid water from condensation and dehydration flows into the first and second water storage chambers, achieving mixed cooling of the liquid water. Then, some of the low-temperature liquid water in the first and second water storage chambers is replenished and returned to the water tank for continued use, completing the water tank cycle and discharging excess liquid water. Internal water circulation is achieved without adding additional liquid water, significantly reducing operating costs.

[0018] Pure water is injected into the water tank as the initial liquid water. During the operation of the screw compressor, the liquid water generated by compressed air and the condensate generated by compressed air condensation are both pure water sources with high cleanliness. They do not require water treatment through a water softener, which can prevent the precipitation of calcium and magnesium ions and the adhesion of carbonate scale in the pipeline. Since it does not carry solid particles, it avoids abrasive wear, which is conducive to maintaining the sealing of the screw head and the compression accuracy. It eliminates the need for frequent scale cleaning, pipeline decontamination, and component anti-corrosion maintenance, simplifying subsequent operation and maintenance of water treatment and reducing the maintenance cost of the whole machine throughout its entire life cycle.

[0019] (3) By using the connecting cavity one and the evaporator to form a primary condensation and drying structure between the first water storage cavity and the second water storage cavity, high-pressure air can be condensed and dried in a primary manner; by using the connecting cavity two and the evaporator on the second water storage cavity to form a secondary condensation and drying structure, high-pressure air can be condensed and dried in a secondary manner, so that the compressed air can be fully dried without the need to add a freeze dryer at the rear end, thereby greatly reducing the equipment's footprint, production cost and installation and maintenance cost.

[0020] (4) When the combined structure of the second water storage cavity and the first connecting cavity, as well as the second connecting cavity and the evaporator are set in multiple sets, multiple primary condensation and drying structures are formed between the first water storage cavity and the second water storage cavity. This can greatly increase the drying efficiency of the compressed air in the first water storage cavity. Combined with the secondary condensation and drying formed on the second water storage cavity, the dryness of the compressed air can be further improved, thereby greatly improving the output quality of the compressor and ensuring the efficiency requirements of industrial production.

[0021] (5) The first water storage chamber and the second water storage chamber are connected by an evaporator and a connecting chamber. The liquid water in the second water storage chamber is all low-temperature condensed water, which forms a temperature difference with the mixed liquid water in the first water storage chamber. By controlling the amount of water returning from the first water storage chamber and the second water storage chamber to the water tank, the temperature of the liquid water in the water tank can be adjusted and controlled, so as to avoid the liquid water being too high or too low affecting the normal operation of the screw compressor and ensure the service life of the screw compressor.

[0022] (6) By installing a fan at the air inlet of the screw compressor, the screw compressor can be assisted in air intake, thereby reducing the power consumption of the screw compressor.

[0023] (7) By setting one-way valve one and one-way valve two at the air inlet and exhaust port of the meshing chamber, and setting the head drain port and electric regulating valve three on the side wall; when the machine stops, the screw head stops rotating, the one-way valve two at the bottom of the head is closed, the fan blows the screw head and meshing chamber, and the flowing air can carry the residual moisture and water vapor in the meshing chamber out from the head drain port, so as to achieve complete drying of the meshing chamber and the internal head. When the fan stops working, one-way valve one and electric regulating valve three are closed, and the inside of the meshing chamber is always kept dry. This can effectively avoid the continuous corrosion damage of moisture to the screw head and the inner wall of the chamber. Ordinary anti-rust materials can be used to make the screw head and ensure its service life, thereby greatly reducing the manufacturing and maintenance costs.

[0024] (8) When the evaporator uses circulating refrigerant, the condensation heat exchange capacity of the refrigeration system is fully guaranteed by setting a primary condensation device and a secondary condensation device. When the ambient temperature is too high, the circulating refrigerant can not meet the demand after condensation heat exchange through the primary condensation device. A portion of the refrigerant after condensation heat exchange through the primary condensation device can be sent to the secondary condensation device through the bypass valve. After secondary condensation heat exchange, it re-enters the compressor, which enhances the heat release liquefaction effect and is conducive to improving the subcooling of the circulating refrigerant. It ensures that the circulating refrigerant entering the refrigerant capillary is in a stable high-pressure liquid state, reduces the condensation pressure, and is more conducive to the refrigerant capillary cooling the refrigerant. It can offset the heat dissipation attenuation caused by the high ambient temperature, maintain the stable operation of the refrigeration system, and thus improve and stabilize the overall equipment's output quality.

[0025] (9) Installing one-way valves at the drain pipes of the first water storage chamber, the second water storage chamber and the water tank can prevent liquid water from flowing back and affecting the normal operation of the equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the external structure of an air compression device according to the present invention; Figure 2 This is a schematic diagram of the internal structure of an air compression device according to the present invention; Figure 3 This is a schematic diagram of the water return principle in an air compression device of the present invention; Figure 4 yes Figure 2 Top view; Figure 5 This is a schematic diagram of the circulation of the cooling medium in an air compression device according to the present invention; Figure 6 - Figure 7 This is a schematic diagram of the structure of the evaporator in an air compression device according to the present invention.

[0028] Figure label: 10. Screw compressor head; 100. Meshing chamber; 101. Cooling water inlet pipe; 102. Compressor head drain outlet; 103. Electric regulating valve three; 104. Check valve one; 105. Check valve two; 11. Motor; 2. Water tank; 20. Initial water inlet; 21. Level switch; 22. Drain pipe three; 23. Manual switch; 24. Electric regulating valve one; 25. Return water filter; 26. Electric regulating valve two; 3. First water storage chamber; 30. Drain pipe one; 31. Return water pipe one; 32. Integrated drain valve; 4. Second water storage chamber; 40. Drain pipe two ; 41. Return water pipe II; 42. Merging pipe; 50. Evaporator I; 500. Evaporator shell; 501. Evaporator refrigerant pipe; 502. Heat sink; 51. Evaporator II; 52. Compressor; 520. Liquid receiver; 53. Primary condenser; 54. Secondary condenser; 55. Refrigerant capillary tube; 56. Refrigerant return pipe; 57. Dryer filter; 58. Bypass valve; 6. Connecting chamber I; 7. Connecting chamber II; 70. Exhaust port; 8. Device housing; 80. Mounting frame; 81. Mounting plate; 9. Fan; 90. Air filter. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this invention.

[0032] The present invention provides the following embodiments. Example 1:

[0033] This invention provides an air compression device, such as... Figure 1 - Figure 5 As shown, an air compression device includes: a screw compressor, a water tank 2, a first water storage chamber 3, a second water storage chamber 4, an evaporator 5, a connecting chamber 1 6, a connecting chamber 2 7, and a device housing 8.

[0034] The device housing 8 has an internal mounting frame 80 with several heat dissipation holes on the side walls and a square tube-shaped base at the bottom; the mounting frame includes a support frame made of profiles and a mounting plate 81 fixed on the support plate.

[0035] The screw compressor is fixed at the bottom of the mounting frame and the device housing 8, including the screw compressor head 10 and the motor 11. Several cooling water inlet pipes 101 that connect to the meshing chambers 100 are respectively provided on both sides of the screw compressor head 10.

[0036] Water tank 2 is a sealed container, located above the screw compressor and fixed to the mounting plate 81. A level gauge is installed inside water tank 2, with an initial water inlet 20 and a level switch 21 at its top. A drain pipe 22 and a manual switch 23 are installed at the bottom of water tank 2. Cooling water inlets 101 on both sides of the meshing chamber 100 are connected to the water outlet of water tank 2. When used for the first time, liquid water is injected into water tank 2 through the initial water inlet 20. After the equipment is started, the air is compressed by the screw compressor to continuously generate liquid water, so it is no longer necessary to add water to water tank 2. When the equipment needs maintenance and drainage is required, the liquid water inside water tank 2 can be drained by opening the manual switch 23.

[0037] The first water storage chamber 3 is fixed to the bottom of the device housing 8 and is located below the screw compressor. The top of the first water storage chamber 3 is connected to the bottom of the meshing chamber 100.

[0038] The second water storage chamber 4 is fixed at the bottom of the device housing 8 and is adjacent to the first water storage chamber 3; the first water storage chamber 3 and the second water storage chamber 4 are connected to the water tank 2 through a return water pipe; and both the first water storage chamber 3 and the second water storage chamber 4 are provided with drainage pipes.

[0039] Furthermore, both the first water storage chamber 3 and the second water storage chamber 4 are equipped with water level gauges and drainage water level lines are set.

[0040] Furthermore, a drainage pipe is provided on the side wall above the water level line of the first water storage chamber 3 and the second water storage chamber 4; the drainage pipe includes a first drainage pipe 30 and a second drainage pipe 40 connecting the first water storage chamber 3 and the second water storage chamber 4; the inlet end of the first drainage pipe 30, the second drainage pipe 40 and the third drainage pipe 22 are all provided with a one-way valve 3, and the outlet end of the first drainage pipe 30, the second drainage pipe 40 and the third drainage pipe 22 are connected to the same integrated drainage valve 32, and the water is drained through the drain port of the integrated drainage valve 32.

[0041] The side walls below the water level lines of the first water storage chamber 3 and the second water storage chamber 4 are connected to the water tank 2 via a return water pipe.

[0042] Furthermore, it also includes an electric regulating valve 1 24, a return water filter 25, and an electric regulating valve 2 26.

[0043] Furthermore, the return water pipeline includes a return water pipe 31 and a return water pipe 41 that are respectively connected to the first water storage chamber 3 and the second water storage chamber 4. The confluence pipeline 42 of the return water pipe 31 and the return water pipe 41 is connected to the inlet of the electric regulating valve 24. The outlet of the electric regulating valve 24 is connected to the inlet of the filter 25. The outlet of the filter 25 is connected to the cooling water inlet of the water tank 2. The electric regulating valve 26 is installed in the pipeline section of the return water pipe 31 and is used to control the flow of water in the return water pipe 31.

[0044] The above solution, by setting a water level line, can accurately control the amount of liquid water stored in the first water storage chamber 3 and the second water storage chamber 4, and promptly discharge excess liquid water to ensure that the circulating water is maintained at a certain capacity and to ensure the normal operation of the equipment.

[0045] The refrigeration system can be a publicly available refrigeration device used to cool and dry the compressed air generated by the screw compressor. Evaporator 1 50 and Evaporator 2 51 of the refrigeration system have the same structure, including at least an evaporator shell 500, several evaporator refrigerant pipes 501 and several heat sinks 502 disposed inside. There is a gap between the several evaporator refrigerant pipes 501 and the evaporator shell 500. The heat sinks 502 are disposed within the gaps, with one end tightly abutting against the evaporator refrigerant pipes 501. The bottom and top ends of the evaporator refrigerant pipes 501 are respectively connected to a refrigerant capillary tube 55 and a refrigerant return pipe 56. The refrigerant capillary tube 55 is used for circulating refrigerant. The medium is used for refrigeration, and then the refrigerated circulating refrigerant is sent to the evaporator refrigerant pipe 501. After the cooled and dried compressed gas enters the gap between the evaporator refrigerant pipe 501 and the evaporator shell 500, it exchanges heat with the evaporator refrigerant pipe 501 and the heat sink 502 to achieve drying and cooling. After the refrigerant is heated by heat exchange, it enters the liquid storage tank 520 of the compressor 52 through the refrigerant return pipe 56. It is compressed by the compressor 52, and then enters the condenser for condensation and heat exchange. It is refrigerated again through the refrigerant capillary tube 55 and re-enters the evaporator 1 50 and evaporator 2 51 to realize the recycling of the refrigerant.

[0046] The connecting cavity 6 is located above the first water storage cavity 3 and the second water storage cavity 4. Both have connecting openings at the bottom and are connected to the outlet of the evaporator 50 of the refrigeration system through their respective connecting openings. The evaporator 50 is also connected to the corresponding connecting openings of the first water storage cavity 3 and the second water storage cavity 4 through the inlet of the evaporator 50. The connecting cavity 2 7 is located above the second water storage cavity 4, and a connection opening is provided on the bottom end face. The connecting cavity 2 4 is connected to the top opening of the second water storage cavity 4 through the evaporator 2 51 of the refrigeration system. An exhaust pipe is provided on one side of the connecting cavity 2 7, and an exhaust port 70 is provided on the exhaust pipe for the operation of the back-end equipment.

[0047] It should be noted that the water return principle of water tank 2 in this scheme is as follows: Before using the equipment for the first time, liquid water needs to be manually added to the water tank. The initial liquid water in water tank 2 enters the meshing chamber 100 to cool the machine head and compressed air. At the same time, the high-pressure air formed by the compression of air in the meshing chamber 100 and the liquid water flow into the first water storage chamber 3. The compressed gas in the first water storage chamber 3 enters the connecting chamber 6 along the evaporator 50, and then enters the second water storage chamber 4 through the connecting chamber 6 and the evaporator 51. During this process, The compressed gas exchanges heat with the refrigerant in evaporator 50 and evaporator 51, causing the temperature to drop. Simultaneously, the generated condensate flows back to the first water storage chamber 3 and the second water storage chamber 4 via evaporators 50 and 51, respectively. When the water level in the first and second water storage chambers 3 and 4 is above the water level line, the excess water flows through drain pipes 30 and 40 into the integrated drain valve 32 and is discharged. When the water level in the water tank 2 is insufficient, the electric regulating valve 24 opens, and the second water storage... The pressure inside water chamber 4 is higher than the pressure in water tank 2. Liquid water in the second water storage chamber 4 will preferentially flow through return pipe 2 41 and manifold 42, then through electric regulating valve 1 24 and return filter 25 into the water tank, replenishing the liquid water in water tank 2. After this replenishment, electric regulating valve 1 24 closes. If the liquid water in the second water storage chamber 4 cannot replenish water tank 2, electric regulating valve 1 24 and electric regulating valve 26 are reopened. Liquid water in the first water storage chamber 3 can then flow through return pipe 1 31 and manifold 42, then through electric regulating valve 26... 4 and the return water filter 25 enter the water tank to continue replenishing the liquid water in the water tank 2, thereby regulating the water level in the water tank 2. If it is necessary to regulate the temperature of the liquid water entering the water tank 2, the opening time of the electric regulating valve 26 can be controlled at the same time as the electric regulating valve 1 24 is opened. The amount of liquid water entering the water tank 2 in the first water storage chamber 3 is controlled by the electric regulating valve 26, thereby controlling the ratio of liquid water entering the water tank 2 in the first water storage chamber 3 and the second water storage chamber 4, thereby achieving the purpose of controlling the temperature of the liquid water in the water tank 2.

[0048] Compared to traditional solutions, the above-mentioned technical solution forms a complete water return system by connecting the water tank, the meshing chamber of the screw compressor, the first water storage chamber, and the second water storage chamber. Without adding additional liquid water, water circulation inside the equipment is achieved through pressure difference, eliminating the need for additional power devices and greatly reducing the overall operating cost of the equipment.

[0049] Furthermore, excess high-temperature liquid water in the first water storage chamber is continuously discharged, while high-pressure air is cooled by the evaporator. The low-temperature liquid water produced by condensation and dehydration flows into the first and second water storage chambers. The liquid water in the first water storage tank is a mixture of high-temperature water and condensate, while the liquid water in the second water storage chamber is entirely low-temperature condensate, creating a temperature difference with the mixed liquid water in the first water storage chamber. By controlling the amount of water returning from the first and second water storage chambers to the water tank, the liquid water circulation in the water tank is completed, and excess liquid water is discharged. This greatly reduces the energy consumption cost required for recycling high-temperature liquid water. Moreover, by adjusting and controlling the temperature of the liquid water in the water tank, excessively high or low liquid water levels can be avoided from affecting the normal operation of the screw compressor, ensuring the service life of the screw compressor.

[0050] Furthermore, purified water is injected into the water tank as the initial liquid water. The liquid water generated by compressed air during the operation of the screw compressor, as well as the condensate generated by the condensation of compressed air, are all purified water sources with high cleanliness. Moreover, there is no need for water quality treatment through a water softening device, which can avoid the precipitation of calcium and magnesium ions and the adhesion of carbonate scale in the pipeline. Since it does not carry solid particles, it avoids abrasive wear, which is conducive to maintaining the sealing of the screw head and the compression accuracy. There is no need for frequent scale cleaning, pipeline decontamination, and component anti-corrosion maintenance, which simplifies the subsequent operation and maintenance of water quality treatment and reduces the maintenance cost of the whole machine throughout its entire life cycle.

[0051] Furthermore, by utilizing the first connecting chamber and the first evaporator to form a primary condensation and drying structure between the first and second water storage chambers, high-pressure air can be subjected to primary condensation and drying. By utilizing the second connecting chamber and the second evaporator to form a secondary condensation and drying structure on the second water storage chamber, high-pressure air can be subjected to secondary condensation and drying, thus achieving thorough drying of compressed air. This eliminates the need to add a refrigerated dryer at the back end and can still meet the usage requirements of the back end, thereby greatly reducing the equipment's footprint, production costs, and installation and maintenance costs.

[0052] Example 2:

[0053] Based on Example 1, such as Figure 1 - Figure 5 As shown, the combination structure of the second water storage cavity 4 and the connecting cavity 6 is provided in one or more sets; When multiple sets of combined structures are provided, the second water storage cavity 4 is located on one side of the first water storage cavity and arranged in parallel. Each second water storage cavity 4 is connected to the first water storage cavity 3 through an independent connecting cavity 6 and an evaporator 50.

[0054] Furthermore, the connecting cavity 2 7 and the second water storage cavity 4 are connected by one or more evaporators 2 51. When multiple evaporators 2 51 are provided, the multiple evaporators 2 51 are arranged sequentially along the length direction of the second water storage cavity 4.

[0055] Compared to traditional solutions, the advantages of the above technical solution are as follows: In this embodiment, when multiple sets of the combined structure of the second water storage cavity and the first connecting cavity, and the second connecting cavity and the evaporator are provided, multiple primary condensation and drying structures are formed between the first water storage cavity and the second water storage cavity. This can greatly increase the drying efficiency of the compressed air in the first water storage cavity. Combined with the secondary condensation and drying formed on the second water storage cavity, the dryness of the compressed air can be further improved, thereby significantly improving the output quality of the compressor and ensuring the efficiency requirements of industrial production.

[0056] Example 3:

[0057] Based on Example 2, such as Figure 6 As shown, it also includes a fan 9; the fan 9 is located above the screw compressor, and its outlet is connected to the inlet of the meshing chamber.

[0058] It should be noted that the fan 9 can be a suction fan, the air inlet of the fan 9 is equipped with an air filter 90, and the air outlet is connected to the air inlet of the meshing chamber 100 of the screw head 10.

[0059] By using the fan 9 and the air filter 90, air can be filtered and sent into the meshing chamber 100, improving the cleanliness of the input air and helping to reduce the purity of the liquid water produced by the compressed air.

[0060] Compared to traditional solutions, the above-mentioned technical solution can assist the screw compressor in air intake by installing a fan at the air inlet, thereby reducing the power consumption of the screw compressor.

[0061] Example 4:

[0062] Based on Example 3, such as Figure 5 - Figure 7 As shown, a head drain port 102 is provided on one side of the bottom of the meshing chamber 100, and an electric regulating valve 103 is installed at the head drain port; The inlet and outlet of the meshing chamber 100 are respectively equipped with one-way valve 104 and one-way valve 105.

[0063] Furthermore, the air inlet of the meshing chamber 100 can also be connected to a drying gas pipeline, and the dried gas can be used to purge the meshing chamber 100 and the screw head.

[0064] It should be noted that this solution can dry the screw head and the inside of the meshing cavity using a blower. The principle is as follows: when the machine stops, the screw head stops rotating, the one-way valve two at the bottom of the head closes, and the blower blows the screw head and the meshing cavity. The flowing air can carry away the residual moisture and water vapor in the meshing cavity and discharge it from the drain port of the head, achieving complete drying of the meshing cavity and the inside of the head. When the blower stops working, the one-way valve one and the electric regulating valve three close, and the inside of the meshing cavity remains dry. Compared with traditional solutions, the above technical solution can effectively avoid the continuous corrosion damage of moisture to the screw head and the inner wall of the cavity. Ordinary anti-rust materials can be used to manufacture the screw head and ensure its service life, thereby greatly reducing manufacturing and maintenance costs.

[0065] Example 5:

[0066] Based on any one of Examples 1-4, such as Figure 5 As shown, the refrigeration system also includes a compressor 52, a primary condenser 53, a secondary condenser 54, and a bypass valve 58; The compressor 52 is connected to a liquid receiver 520. The inlet of the liquid receiver 520 is connected to the outlet of the refrigerant pipe 501 of the evaporator in evaporator 1 50 and evaporator 2 51 through a refrigerant return pipe 56. The refrigerant returns through the liquid receiver 520 and enters the compressor 52 for compression, providing power for the refrigeration cycle. The outlet of the compressor 52 is connected to the inlet of the first-stage condenser 53. The outlet of the first-stage condenser 53 is equipped with a main return pipe and a branch pipe. The main return pipe is connected to the inlet of the refrigerant pipe 501 of the evaporator in evaporator 1 50 and evaporator 2 51 through a refrigerant capillary tube 55, forming the main circulation path of the refrigerant. A bypass valve 58 is installed on the branch pipe and is connected in sequence to the inlet of the second-stage condenser 54 and the liquid receiver 520, forming a branch circulation path of the refrigerant.

[0067] Furthermore, the refrigeration system also includes a dryer filter 57; the dryer filter 57 is installed on the main return pipe, and the refrigerant enters the refrigerant capillary tube 55 after being dried by the dryer filter 57.

[0068] It should be noted that the circulation path of the cooling medium in this scheme can be divided into a normal temperature circulation path and a high temperature environment circulation path.

[0069] In the normal temperature path: after the refrigerant in evaporator 1 50 and evaporator 2 51 exchanges heat, it enters the liquid storage tank 520 through the refrigerant return pipe 56, is compressed by the compressor 52 to provide circulation power, and the pressurized refrigerant enters the first-stage condenser 53 for initial condensation and heat exchange. Then it is dried through the main return pipe and the dryer filter 57, and finally refrigerated through the refrigerant capillary tube 55 before flowing back into evaporator 1 50 and evaporator 2 51 to complete the main return cycle.

[0070] In the high-temperature environment circulation path: after the refrigerant in evaporator 1 50 and evaporator 2 51 exchanges heat, it enters the liquid storage tank 520 through the refrigerant return pipe 56. It is then compressed by the compressor 52 to provide circulation power. The pressurized refrigerant enters the first-stage condensing device 53 for initial condensation and heat exchange. Part of the refrigerant is dried through the main return pipe and the dryer filter 57, and then refrigerated through the refrigerant capillary tube 55 before flowing back into evaporator 1 50 and evaporator 2 51 to complete the main return circulation. The other part of the refrigerant enters the second-stage condensing device 54 through the branch pipe and the bypass valve 58 for secondary condensation and heat exchange before flowing back into the liquid storage tank 520 to achieve the branch circulation.

[0071] It should be noted that the primary condenser 53 and the secondary condenser 54 can be existing heat exchanger structures that have been disclosed, and can be cooled by air, water or other media to cool the circulating cold medium after heat absorption.

[0072] Compared to traditional solutions, the above technical solution, when using circulating refrigerant in the evaporator, fully guarantees the condensation heat exchange capacity of the refrigeration system by setting up a primary condenser and a secondary condenser. When the ambient temperature is too high, and the circulating refrigerant cannot meet the demand after condensation heat exchange in the primary condenser, a portion of the refrigerant after condensation heat exchange in the primary condenser can be sent to the secondary condenser through a bypass valve. After secondary condensation heat exchange, it re-enters the compressor, enhancing the exothermic liquefaction effect and improving the subcooling of the circulating refrigerant. This ensures that the circulating refrigerant entering the refrigerant capillary is in a stable high-pressure liquid state, reducing the condensation pressure and making it more conducive to the refrigerant capillary for cooling the refrigerant. It can offset the heat dissipation attenuation caused by high ambient temperature, maintain the stable operation of the refrigeration system, and thus improve and stabilize the overall air output quality of the equipment.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air compression device, characterized in that, include: Screw compressor; A water tank is located above the screw compressor; the meshing chamber of the screw compressor is connected to the water tank. The first water storage cavity is connected to the meshing chamber; The second water storage chamber; both the first water storage chamber and the second water storage chamber are connected to the water tank through a return water pipe; and both the first water storage chamber and the second water storage chamber are equipped with a drain pipe; Refrigeration system; A connecting cavity is disposed above the first water storage cavity and the second water storage cavity, and is connected to the first water storage cavity and the second water storage cavity respectively through the evaporator of the refrigeration system; The second connecting cavity is located above the second water storage cavity. The second connecting cavity is connected to the second water storage cavity through the evaporator of the refrigeration system and is equipped with an exhaust pipe.

2. An air compression device according to claim 1, characterized in that, One or more sets of combined structures of the second water storage cavity and the first communicating cavity are provided; When multiple sets of combined structures are provided, each of the second water storage chambers is connected to the first water storage chamber through the first connecting chamber and the first evaporator.

3. An air compression device according to claim 1, characterized in that, The second connecting cavity and the second water storage cavity are connected by one or more of the second evaporators.

4. An air compression device according to claim 3, characterized in that, The first water storage cavity and the second water storage cavity are equipped with water level gauges and drainage water level lines are set. The drainage pipe is provided on the side wall above the water level line of the first water storage cavity and the second water storage cavity; The side walls below the water level lines of the first and second water storage chambers are connected to the water tank via a return water pipe.

5. An air compression device according to claim 4, characterized in that, It also includes a fan; the fan is located above the screw compressor, and its outlet is connected to the inlet of the meshing chamber.

6. An air compression device according to any one of claims 1-5, characterized in that, The meshing chamber is equipped with a machine head drain outlet and an electric regulating valve. The inlet and outlet of the meshing chamber are respectively equipped with one-way valve one and one-way valve two.

7. An air compression device according to claim 6, characterized in that, The refrigeration system also includes a compressor, a primary condenser, a secondary condenser, and a bypass valve; The compressor's inlet is connected to evaporator one and evaporator two via refrigerant return pipes to compress the circulating refrigerant. The compressor's outlet is connected to the primary condenser. The primary condenser's outlet is equipped with a main return pipe and a branch pipe. The main return pipe is connected to evaporator one and evaporator two via refrigerant capillary tubes, forming the main circulation path for the refrigerant. The branch pipe is equipped with a bypass valve and is sequentially connected to the secondary condenser and the compressor, forming a branch circulation path for the refrigerant.

8. An air compression device according to claim 7, characterized in that, The refrigeration system also includes a dryer filter; The drying filter is installed on the main return pipe and is used for drying the refrigerant.

9. An air compression device according to claim 6, characterized in that, It also includes electric regulating valve one, return water filter and electric regulating valve two; The return water pipeline includes a return water pipe one and a return water pipe two that are respectively connected to the first water storage chamber and the second water storage chamber. The confluence of the return water pipe one and the return water pipe two is connected to the inlet of the electric regulating valve one. The outlet of the electric regulating valve one is connected to the inlet of the return water filter. The outlet of the filter is connected to the cooling water inlet of the water tank. The second electric regulating valve is installed within the pipe section of the first return water pipe and is used to control the flow of water within the first return water pipe.

10. An air compression device according to claim 9, characterized in that, The drainage pipeline includes a first drainage pipe and a second drainage pipe that connect the first water storage cavity and the second water storage cavity; The bottom of the water tank is equipped with a drain pipe. One-way valve 3 is installed at the inlet end of each of the drain pipes 1, 2 and 3.

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