A screw gas compressor

Abstract

The application belongs to the field of screw compressors, and particularly relates to a screw gas compressor, which comprises a base, a machine shell arranged at the middle position of the upper part of the base, a baffle fixedly arranged at the left and right sides of the inside of the machine shell, the inside of the machine shell being sequentially divided into a first chamber, a second chamber and a third chamber from left to right by the baffle, front and back symmetrical distribution of a female screw and a male screw being rotationally arranged in the second chamber, the female screw and the male screw being matched with each other but not in contact, an oil storage cylinder fixedly arranged at the left and right sides of the upper part of the base, and a cavity being arranged in the inside of the machine shell. In the process of compressing air, the machine shell can be cooled and the lubricating oil can be cooled, the normal operation of the compressed air is ensured, the air entering into the air inlet pipe can be preheated by using the heat of the machine shell and the heat of the lubricating oil, and the compression efficiency of the compressor can be improved and the energy consumption of the compressor can be reduced when the air is compressed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of screw compressors, and particularly relates to a screw gas compressor. BACKGROUND

[0002] The screw gas compressor mainly comprises male and female rotors, a casing and a lubricating assembly, and its working principle is that the male and female rotors rotate with each other, the volume of the working chamber at the gas inlet side expands to suck in gas, the volume of the working chamber shrinks with the rotation of the rotors, the gas is compressed, and finally high-pressure gas is discharged from the gas outlet. The screw gas compressor can be generally divided into a dry-type screw gas compressor and a wet-type screw gas compressor. In the working process of the dry-type screw gas compressor, the rotors do not directly contact oil, and the compression chamber does not spray oil, only the gear set and the bearing set are lubricated.

[0003] Although the dry-type screw gas compressor can directly output high-quality compressed gas in the working process, the oil cooling in the compression chamber is not performed compared with the wet-type screw gas compressor, so that the temperature of the casing is relatively high during work. The casing is in a high-temperature state for a long time, which may change the size and shape of the casing due to thermal expansion, thereby affecting the gap fit between the rotors and the casing. The change of the gap may increase the leakage of the gas, reduce the compression efficiency of the compressor, and further affect the normal working performance of the dry-type screw gas compressor. SUMMARY

[0004] In view of the above problems, the screw gas compressor provided by the present application can preheat the compressed air by using the absorbed heat during the process of cooling the casing and lubricating, so as to improve the compression efficiency of the compressor and reduce the energy consumption of the compressor.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: the present application provides a screw gas compressor, which comprises a base, a casing is arranged at the upper middle position of the base, a partition plate is fixedly arranged at the left and right sides of the inside of the casing, the inside of the casing is sequentially divided into a first chamber, a second chamber and a third chamber from left to right by the partition plate, a female screw and a male screw which are symmetrically distributed in front and back are rotationally arranged in the second chamber, and the female screw and the male screw cooperate with each other but do not contact each other, an oil storage cylinder is fixedly arranged at the left and right sides of the upper part of the base, a cavity is formed in the inside of the casing, and a heat dissipation mechanism is arranged between the inside of the cavity and the two oil storage cylinders.

[0006] The heat dissipation mechanism comprises a spiral pipe which is fixedly arranged in the cavity, both ends of the spiral pipe penetrate out of the cavity, a first air guide pipe is arranged in communication between the front sides of the two oil storage cylinders, a second air guide pipe is arranged in communication between the front sides of the two oil storage cylinders, one end of the spiral pipe is in communication with the first air guide pipe, and a third air guide pipe is arranged in communication on the second air guide pipe.

[0007] The upper left side of the shell is provided with an air inlet assembly used in cooperation with the heat dissipation mechanism, the bottom right side of the shell is fixedly provided with an air outlet pipe, and the top end of the air outlet pipe penetrates into the second chamber.

[0008] According to an advantageous embodiment, the left and right ends of the female screw rod and the male screw rod are fixedly provided with connecting rods, the two connecting rods on the left side penetrate into the first chamber and are rotatably connected with the left inner wall of the first chamber, the two connecting rods on the right side penetrate into the third chamber and are rotatably connected with the right inner wall of the third chamber, the outer side of the connecting rod is fixedly provided with a bearing, and the two connecting rods on the left side are fixedly provided with gears, the two gears are meshed with each other, the right side of the shell is fixedly provided with a motor, and the output shaft of the motor is connected with the right end of one of the connecting rods on the right side.

[0009] According to an advantageous embodiment, the inner upper end of the oil storage cylinder is fixedly provided with a filter plate, a serpentine groove is formed in the inner part of the filter plate, a first serpentine pipe is fixedly arranged in the serpentine groove, and the two ends of the first serpentine pipe are respectively communicated with the first air guide pipe and the second air guide pipe.

[0010] According to an advantageous embodiment, the air inlet assembly comprises an air inlet pipe fixedly arranged on the upper left side of the shell, the bottom end of the air inlet pipe penetrates into the second chamber, a temperature sensor is arranged in the inner part of the air inlet pipe, and a ventilation pipe is arranged in communication with the upper part of the air inlet pipe, the ventilation pipe is communicated with one end of the third air guide pipe away from the second air guide pipe.

[0011] According to an advantageous embodiment, a cooling mechanism used in cooperation with the air inlet assembly is arranged between the two oil storage cylinders, the cooling mechanism comprises a second serpentine pipe fixedly arranged at the inner lower end of the oil storage cylinder, a fourth air guide pipe is arranged in communication between the two second serpentine pipes, a fifth air guide pipe is arranged in communication on the fourth air guide pipe, and one end of the fifth air guide pipe away from the fourth air guide pipe is communicated with the ventilation pipe.

[0012] According to an advantageous embodiment, one end of the second serpentine pipe away from the fourth air guide pipe penetrates out of the oil storage cylinder, and the one end of the second serpentine pipe away from the fourth air guide pipe and the one end of the spiral pipe away from the first air guide pipe are both provided with a filter sleeve.

[0013] According to an advantageous embodiment, a plurality of downwardly inclined blocking blocks are fixedly arranged on the front and rear inner walls of the ventilation pipe, and the two blocking blocks adjacent to each other in front and back are distributed in an up-and-down staggered manner.

[0014] According to an advantageous embodiment, the bottom of the casing is provided with an oil supply mechanism used in cooperation with the oil storage cylinder, the oil supply mechanism comprising an oil pump fixedly arranged on the bottom of the casing, the input end of the oil pump being provided with a first three-way pipe, the left and right ends of the first three-way pipe penetrating into the corresponding oil storage cylinder respectively, the output end of the oil pump being provided with a second three-way pipe, the left and right ends of the second three-way pipe being respectively provided with an oil inlet pipe in communication, the oil inlet pipe on the left side penetrating into the first chamber, and the oil inlet pipe on the right side penetrating into the second chamber.

[0015] According to an advantageous embodiment, the bottom of the casing is provided with an oil supply mechanism used in cooperation with the oil storage cylinder, the oil supply mechanism comprising an oil pump fixedly arranged on the bottom of the casing, the input end of the oil pump being provided with a first three-way pipe, the left and right ends of the first three-way pipe penetrating into the corresponding oil storage cylinder respectively, the output end of the oil pump being provided with a second three-way pipe, the left and right ends of the second three-way pipe being respectively provided with an oil inlet pipe in communication, the oil inlet pipe on the left side penetrating into the first chamber, and the oil inlet pipe on the right side penetrating into the second chamber.

[0016] According to an advantageous embodiment, the third air guide pipe is provided with an exhaust pipe in communication, and the exhaust pipe is provided with a one-way valve.

[0017] Compared with the prior art, the screw gas compressor provided by the embodiment of the present application has the following beneficial effects:

[0018] 1、The heat dissipation mechanism and the cooling mechanism are used in cooperation in the process of compressing air, so that the casing can be cooled and the lubricating oil can be cooled, the normal operation of the compressed air is ensured, the air entering the air inlet pipe can be preheated by using the heat of the casing and the heat of the lubricating oil, the compression efficiency of the compressor can be improved and the energy consumption of the compressor can be reduced when the air is compressed.

[0019] 2、The heat dissipation mechanism and the cooling mechanism are arranged in the present application, when the air outside is compressed, the casing can be quickly cooled when the air outside enters the air inlet pipe through the spiral pipe, the lubricating oil in the oil storage cylinder can be cooled when the air enters the air inlet pipe through the second serpentine pipe, so that the use effect of the lubricating oil can be ensured, and the normal operation of the compressed air can be ensured.

[0020] 3、The group of baffles, the temperature sensor and the exhaust pipe are arranged in the present application, the air entering the air inlet pipe has a certain temperature when the air outside enters the air inlet pipe through the third air guide pipe and the fifth air guide pipe, the air can be preheated by using the heat of the casing and the heat of the lubricating oil, the air can be uniformly mixed in the air inlet pipe by using the group of baffles, so that the temperature of the air entering the second chamber is more stable, and the energy consumption of the compressor can be reduced when the air is compressed.

[0021] 4、The first serpentine pipe is arranged in the application, in the process that the air in the spiral pipe enters the first serpentine pipe, the heat of the machine shell can be utilized to heat the filter plate, the solidification of the lubricating oil on the filter plate when the compressed air is in a low temperature environment can be effectively avoided, and the filtering effect of the filter plate on the lubricating oil can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure diagram of the first perspective of the application.

[0023] Figure 2 It is a structure diagram of the second perspective of the application.

[0024] Figure 3 It is a partial sectional structure diagram of the application.

[0025] Figure 4 It is a sectional structure diagram of the air inlet assembly in the application.

[0026] Figure 5 It is a connecting sectional structure diagram of the heat dissipation mechanism and the oil storage cylinder in the application.

[0027] Figure 6 It is a connecting sectional structure diagram of the first serpentine pipe and the filter plate in the application.

[0028] Figure 7 It is a connecting sectional structure diagram of the cooling mechanism and the oil storage cylinder in the application.

[0029] Figure 8 It is a connecting structure diagram of the oil supply mechanism and the oil storage cylinder in the application.

[0030] Figure 9 It is a sectional structure diagram of the oil storage cylinder in the application.

[0031] In the drawing, the reference signs are as follows: 1, base; 2, machine shell; 3, partition plate; 4, first chamber; 5, second chamber; 6, third chamber; 7, female screw rod; 8, male screw rod; 9, oil storage cylinder; 10, cavity; 11, heat dissipation mechanism; 111, spiral pipe; 112, first air guide pipe; 113, second air guide pipe; 114, third air guide pipe; 12, air inlet assembly; 121, air inlet pipe; 122, air pipe; 13, air outlet pipe; 14, connecting rod; 15, bearing; 16, gear; 17, motor; 18, filter plate; 19, first serpentine pipe; 20, temperature sensor; 21, cooling mechanism; 211, second serpentine pipe; 212, fourth air guide pipe; 213, fifth air guide pipe; 22, filter sleeve; 23, blocking block; 24, oil supply mechanism; 241, oil pump; 242, No. 1 three-way pipe; 243, No. 2 three-way pipe; 244, oil inlet pipe; 25, oil return pipe; 26, exhaust pipe; 27, one-way valve. DETAILED DESCRIPTION

[0032] The following description will be made in conjunction with the accompanying drawings Figures 1-9 The application is described in further detail.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 , a screw gas compressor, comprising a base 1, an upper middle position of the base 1 is provided with a casing 2, the inside of the casing 2 is fixedly provided with a partition plate 3 on the left and right sides, the inside of the casing 2 is sequentially divided into a first chamber 4, a second chamber 5 and a third chamber 6 from left to right by the partition plate 3, a female screw 7 and a male screw 8 are rotationally arranged in the second chamber 5 and are symmetrically distributed front and back, and the female screw 7 and the male screw 8 cooperate with each other but do not contact, the left and right ends of the female screw 7 and the male screw 8 are fixedly provided with connecting rods 14, the two connecting rods 14 on the left side all penetrate into the first chamber 4 and are rotationally connected with the left side inner wall of the first chamber 4, the two connecting rods 14 on the right side all penetrate into the third chamber 6 and are rotationally connected with the right side inner wall of the third chamber 6, the outside of the connecting rod 14 is fixedly provided with a bearing 15, and the two connecting rods 14 on the left side are both fixedly provided with a gear 16, the two gears 16 are meshed with each other, the right side of the casing 2 is fixedly provided with a motor 17, and the output shaft of the motor 17 is connected with the right end of the connecting rod 14 on the right side.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , the upper left and right sides of the base 1 are both fixedly provided with an oil storage cylinder 9, a cavity 10 is formed in the inside of the casing 2, and a heat dissipation mechanism 11 is commonly arranged between the inside of the cavity 10 and the two oil storage cylinders 9. The upper left side of the casing 2 is provided with an air inlet assembly 12 for cooperating with the heat dissipation mechanism 11, the bottom right side of the casing 2 is fixedly provided with an air outlet pipe 13, and the top end of the air outlet pipe 13 penetrates into the second chamber 5.

[0035] When the air is compressed, the motor 17 works to drive the corresponding connecting rod 14 to rotate, the connecting rod 14 drives the gear 16 to rotate, so that the two reverse rotating gears 16 can drive the female screw 7 and the male screw 8 to rotate reversely, the air outside can be sucked into the second chamber 5 through the reverse rotation of the female screw 7 and the male screw 8, then the air entering the second chamber 5 can be compressed, and the compressed air can be discharged through the air outlet pipe 13, and in the process of compressing the air, the casing 2 can be cooled by the heat dissipation mechanism 11 to ensure the normal operation of the compressed air.

[0036] Please refer to Figure 1 , Figure 2 and Figure 8The bottom of the casing 2 is provided with an oil supply mechanism 24 cooperating with the oil storage cylinders 9. The oil supply mechanism 24 comprises an oil pump 241 fixedly arranged at the bottom of the casing 2. The input end of the oil pump 241 is provided with a No. 1 three-way pipe 242. The left and right ends of the No. 1 three-way pipe 242 respectively penetrate into the corresponding oil storage cylinders 9. The output end of the oil pump 241 is provided with a No. 2 three-way pipe 243. The left and right ends of the No. 2 three-way pipe 243 are respectively provided with oil inlet pipes 244. The oil inlet pipe 244 on the left side penetrates into the first chamber 4. The oil inlet pipe 244 on the right side penetrates into the second chamber 5.

[0037] Referring to Figure 5 and Figure 8 The inside upper end of the oil storage cylinder 9 is fixedly provided with a filter plate 18. The bottom of the casing 2 is fixedly provided with oil return pipes 25 on the left and right sides. The oil return pipe 25 on the left side penetrates into the first chamber 4. The oil return pipe 25 on the right side penetrates into the second chamber 5. The bottom ends of the two oil return pipes 25 respectively penetrate into the corresponding oil storage cylinders 9.

[0038] In order to lubricate and cool the rotating gear 16 and bearing 15, the oil pump 241 can be operated regularly during the operation of the motor 17. The oil pump 241 can extract the lubricating oil in the oil storage cylinder 9 through the No. 1 three-way pipe 242. Then the lubricating oil enters the corresponding oil inlet pipe 244 through the No. 2 three-way pipe 243. Finally, the lubricating oil enters the first chamber 4 and the third chamber 6 through the corresponding oil inlet pipe 244. Thus, the rotating gear 16 and bearing 15 can be lubricated and cooled, ensuring the normal operation of the compressed air. Then the lubricating oil can enter the inside of the oil storage cylinder 9 through the oil return pipe 25. Since the gear 16 and bearing 15 will wear out during long-term use, metal debris will be generated during the lubrication and cooling of the gear 16 and bearing 15. Therefore, the lubricating oil can be filtered by the filter plate 18 when it returns to the oil storage cylinder 9, so that the lubricating oil can be recycled.

[0039] Referring to Figure 5 The heat dissipation mechanism 11 comprises a spiral pipe 111 fixedly arranged in the cavity 10. The two ends of the spiral pipe 111 penetrate out of the cavity 10. A first air guide pipe 112 is communicatively arranged between the front sides of the two oil storage cylinders 9. A second air guide pipe 113 is communicatively arranged between the front sides of the two oil storage cylinders 9. One end of the spiral pipe 111 is in communication with the first air guide pipe 112. A third air guide pipe 114 is communicatively arranged on the second air guide pipe 113.

[0040] Referring to Figure 6 The inside of the filter plate 18 is provided with a serpentine groove. A first serpentine pipe 19 is fixedly arranged in the serpentine groove. The two ends of the first serpentine pipe 19 are respectively in communication with the first air guide pipe 112 and the second air guide pipe 113.

[0041] Referring to Figure 2 and Figure 4 , the air inlet assembly 12 includes an air inlet pipe 121 fixedly arranged on the left side of the upper portion of the casing 2, the bottom end of the air inlet pipe 121 penetrates into the second chamber 5, and the upper portion of the air inlet pipe 121 is communicated with an air pipe 122, and the air pipe 122 is communicated with the end of the third air guide pipe 114 away from the second air guide pipe 113.

[0042] Referring to Figure 2 , Figure 5 , Figure 7 and Figure 9 , the cooling mechanism 21 used in cooperation with the air inlet assembly 12 is arranged between the two oil storage cylinders 9, and the cooling mechanism 21 includes a second serpentine pipe 211 fixedly arranged at the lower end inside the oil storage cylinder 9, the fourth air guide pipe 212 is arranged in communication between the two second serpentine pipes 211, the fifth air guide pipe 213 is arranged in communication on the fourth air guide pipe 212, and the end of the fifth air guide pipe 213 away from the fourth air guide pipe 212 is communicated with the air pipe 122. The end of the second serpentine pipe 211 away from the fourth air guide pipe 212 penetrates out of the oil storage cylinder 9, and the end of the second serpentine pipe 211 away from the fourth air guide pipe 212 and the end of the spiral pipe 111 away from the first air guide pipe 112 are both provided with a filter sleeve 22.

[0043] In order to cool the casing 2 and cool the lubricating oil during the compression of air, during the reverse rotation of the female screw 7 and the male screw 8, the air outside will first pass through the filter sleeve 22 for filtering, and after removing the impurities and particulate matters in the air, the air enters the spiral pipe 111 and the second serpentine pipe 211. The air entering the spiral pipe 111 enters the inside of the first air guide pipe 112, and then enters the first serpentine pipe 19 and the second air guide pipe 113 in turn, and finally enters the air pipe 122 through the third air guide pipe 114. At the same time, after entering the inside of the second serpentine pipe 211, it enters the fourth air guide pipe 212, and then enters the air pipe 122 through the fifth air guide pipe 213. Finally, the air in the air pipe 122 enters the second chamber 5 through the air inlet pipe 121 for compression, and the compressed air is discharged through the air outlet pipe 13.

[0044] When the air enters into the corresponding first air guide pipe 112 from the spiral pipe 111, the heat on the first casing 2 can be taken away, so that the casing 2 can be quickly cooled. Since the oil pump 241 works intermittently during the compression of the air, when the external environment is relatively cold, the lubricating oil remaining on the filter plate 18 is easy to solidify and block the filter holes. When the air entering the spiral pipe 111 enters the first serpentine pipe 19, the air takes away the heat of the casing 2 and has a certain heat. The heat can be used to keep the filter plate 18 warm at all times, so that the normal use of the filter plate 18 can be ensured.

[0045] At the same time, when the air enters into the fourth air guide pipe 212 from the second serpentine pipe 211, heat exchange with the lubricating oil in the oil storage cylinder 9 can occur, which can effectively cool the lubricating oil in the oil storage cylinder 9 and reduce the temperature of the lubricating oil, thereby ensuring the normal use of the subsequent lubricating oil.

[0046] Referring to Figure 4 and Figure 5 , the inside of the air inlet pipe 121 is provided with a temperature sensor 20, and the third air guide pipe 114 is provided with a communication exhaust pipe 26, and the exhaust pipe 26 is provided with a one-way valve 27. The front and rear inner walls of the air pipe 122 are fixedly provided with a plurality of downward inclined blocking blocks 23, and the front and rear adjacent two blocking blocks 23 are distributed in an upper and lower staggered manner.

[0047] In order to reduce the energy consumption in the process of compressing the air, when the external air enters into the inside of the air pipe 122 through the spiral pipe 111 and the second serpentine pipe 211, the heat of the casing 2 and the heat of the lubricating oil can be used to preheat the air. The temperature of the air entering into the air pipe 122 will be slightly higher than the normal temperature. In the compression process, for the same compression ratio, the preheated gas needs relatively less compression work in the compression process. In this way, the working efficiency of the compressor can be improved, and the energy consumption of the compressor can be reduced. Furthermore, after the external air enters into the air pipe 122 through the third air guide pipe 114 and the fifth air guide pipe 213, the air flow path in the air pipe 122 can be increased by the partition plate 3, so that the air has more time to mix uniformly in the air pipe 122, so that the temperature is more stable when entering into the second chamber 5, thereby ensuring the normal compression of the air.

[0048] Meanwhile, when the temperature of the air entering into the air inlet pipe 121 is high, which is detected by the temperature sensor 20, since the temperature of the air in the third air guide pipe 114 is higher than that in the fifth air guide pipe 213, the one-way valve 27 on the air outlet pipe 26 can be opened at this time, so that a part of the air entering into the third air guide pipe 114 can be directly discharged, and the amount of the air entering into the air guide pipe 122 is reduced, so that the temperature of the air entering into the air guide pipe 122 can be balanced, and the compression air work can not be affected.

[0049] In particular, when the air is compressed, the motor 17 can be used to drive the female screw 7 and the male screw 8 to rotate reversely, at this time, the air outside can enter into the spiral pipe 111 and the second serpentine pipe 211, and then enter into the air guide pipe 122 together, and finally enter into the second chamber 5 through the air inlet pipe 121 to be compressed, and the compressed air can be discharged through the air outlet pipe 13.

[0050] In the process of compressing the air, when the air outside enters into the spiral pipe 111 and the second serpentine pipe 211, the shell 2 can be cooled and the lubricating oil can be cooled respectively, which not only ensures the normal operation of the compressed air work, but also the heat of the shell 2 and the heat of the lubricating oil can be used to preheat the air entering into the air inlet pipe 121, so that the compression efficiency can be improved and the energy consumption can be reduced when the air is compressed, and the filter plate 18 can also be kept warm, so that the lubricating oil remaining on the filter plate 18 is not easy to solidify and block the filter holes, and the normal operation of the compressed air work is further ensured.

[0051] The above only describes the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A screw gas compressor comprising a base (1), characterized in that: The upper middle position of the base (1) is provided with a machine shell (2), the left and right sides of the inside of the machine shell (2) are fixedly provided with a partition plate (3), the inside of the machine shell (2) is sequentially divided into a first chamber (4), a second chamber (5) and a third chamber (6) from left to right by the partition plate (3), a front and back symmetrical distribution of female screw rod (7) and male screw rod (8) are rotatably arranged in the second chamber (5), and the female screw rod (7) and the male screw rod (8) are matched with each other but not in contact, the upper left and right sides of the base (1) are fixedly provided with an oil storage cylinder (9), a cavity (10) is formed in the inside of the machine shell (2), and a heat dissipation mechanism (11) is arranged between the inside of the cavity (10) and the two oil storage cylinders (9). The heat dissipation mechanism (11) comprises a spiral pipe (111) fixedly arranged in the cavity (10), both ends of the spiral pipe (111) penetrate out of the cavity (10), a first air duct (112) is arranged in communication between the front sides of the two oil storage cylinders (9), a second air duct (113) is arranged in communication between the front sides of the two oil storage cylinders (9), one end of the spiral pipe (111) is in communication with the first air duct (112), and a third air duct (114) is arranged in communication on the second air duct (113). An air inlet assembly (12) used in cooperation with the heat dissipation mechanism (11) is arranged on the upper left side of the machine shell (2), an air outlet pipe (13) is fixedly arranged at the bottom right side of the machine shell (2), and the top end of the air outlet pipe (13) penetrates into the second chamber (5).

2. A screw gas compressor according to claim 1, characterized in that The left and right ends of the female screw rod (7) and the male screw rod (8) are fixedly provided with connecting rods (14), the two connecting rods (14) on the left side penetrate into the first chamber (4) and are rotatably connected with the left side inner wall of the first chamber (4), and the two connecting rods (14) on the right side penetrate into the third chamber (6) and are rotatably connected with the right side inner wall of the third chamber (6), bearings (15) are fixedly arranged on the outer sides of the connecting rods (14), gears (16) are fixedly arranged on the two connecting rods (14) on the left side, the two gears (16) are meshed with each other, a motor (17) is fixedly arranged on the right side of the machine shell (2), and the output shaft of the motor (17) is connected with the right end of one of the connecting rods (14) on the right side.

3. A screw gas compressor according to claim 1, characterized in that A filter plate (18) is fixedly arranged at the upper end in the inside of the oil storage cylinder (9), a serpentine groove is formed in the inside of the filter plate (18), a first serpentine pipe (19) is fixedly arranged in the serpentine groove, and the two ends of the first serpentine pipe (19) are in communication with the first air duct (112) and the second air duct (113) respectively.

4. A screw gas compressor according to claim 1, characterized in that The air inlet assembly (12) comprises an air inlet pipe (121) fixedly arranged on the upper left side of the machine shell (2), the bottom end of the air inlet pipe (121) penetrates into the second chamber (5), a temperature sensor (20) is arranged in the inside of the air inlet pipe (121), an air pipe (122) is arranged in communication on the upper part of the air inlet pipe (121), and the air pipe (122) is in communication with one end of the third air duct (114) away from the second air duct (113).

5. A screw gas compressor according to claim 4, characterized in that Two oil storage cylinders (9) are provided with cooling mechanisms (21) used in cooperation with the air inlet assembly (12), the cooling mechanisms (21) comprise second serpentine pipes (211) fixedly arranged at lower ends inside the oil storage cylinders (9), fourth air guide pipes (212) are arranged in communication between two second serpentine pipes (211), fifth air guide pipes (213) are arranged in communication on the fourth air guide pipes (212), and one ends of the fifth air guide pipes (213) away from the fourth air guide pipes (212) are in communication with the air pipes (122).

6. A screw gas compressor according to claim 5, characterized in that The one ends of the second serpentine pipes (211) away from the fourth air guide pipes (212) penetrate out of the oil storage cylinders (9), and the one ends of the second serpentine pipes (211) away from the fourth air guide pipes (212) and the one ends of the spiral pipes (111) away from the first air guide pipes (112) are provided with filter sleeves (22).

7. A screw gas compressor according to claim 4, characterized in that The front and rear inner walls of the air pipes (122) are fixedly provided with a plurality of downwardly inclined blocking blocks (23), and two adjacent blocking blocks (23) are arranged in up-down staggered distribution.

8. A screw gas compressor according to claim 1, characterized in that The bottom of the machine shell (2) is provided with an oil supply mechanism (24) used in cooperation with the oil storage cylinders (9), the oil supply mechanism (24) comprises an oil pump (241) fixedly arranged at the bottom of the machine shell (2), a first three-way pipe (242) is arranged at an input end of the oil pump (241), left and right ends of the first three-way pipe (242) penetrate into corresponding oil storage cylinders (9) respectively, a second three-way pipe (243) is arranged at an output end of the oil pump (241), left and right ends of the second three-way pipe (243) are provided with oil inlet pipes (244) in communication respectively, the oil inlet pipe (244) on the left side penetrates into the first chamber (4), and the oil inlet pipe (244) on the right side penetrates into the second chamber (5).

9. A screw gas compressor according to claim 1, characterized in that The bottom of the machine shell (2) is provided with oil return pipes (25) fixedly arranged at left and right sides respectively, the oil return pipe (25) on the left side penetrates into the first chamber (4), the oil return pipe (25) on the right side penetrates into the second chamber (5), and bottom ends of the two oil return pipes (25) penetrate into corresponding oil storage cylinders (9) respectively.

10. A screw gas compressor according to claim 1, characterized in that The third air guide pipes (114) are provided with exhaust pipes (26) in communication, and the exhaust pipes (26) are provided with one-way valves (27).

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