Buried vacuum pump station

Abstract

The invention discloses a buried vacuum pump station, and relates to the technical field of vacuum pump stations, the buried vacuum pump station comprises an integrated shell, the top of the integrated shell is fixedly connected with an access hole, the bottom of the access hole is communicated with the interior of the integrated shell, the interior of the integrated shell is fixedly connected with a tank sealing plate, and an operation room is arranged above the tank sealing plate; the top of the tank sealing plate is fixedly connected with a sewage inlet vacuum pipe, and a non-rising stem gate valve is fixedly mounted on the sewage inlet vacuum pipe; sewage flowing at a high speed can effectively drive a rotating frame to rotate, a first cutting knife is driven to rotate in the rotating process of the rotating frame, solids in the sewage can be cut up by the first cutting knife and a second cutting knife attached to the first cutting knife in the rotating process of the first cutting knife, and after the solids are cut up through the first cutting knife and the second cutting knife, the solids in the sewage can be separated from the first cutting knife and the second cutting knife. The sewage treatment device is simple in structure and convenient to use, can reduce the situation that solids block a pipeline, effectively improves the sewage treatment efficiency, prevents the solids from causing loads to parts in the device, and further reduces the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pump stations, and more particularly, to an underground vacuum pump station. Background Art

[0002] In plateau areas, the altitude is high, the temperature is low, and permafrost is widely distributed. Traditional underground vacuum pump stations are difficult to operate normally in such extreme environments. The problems of plateau vacuum pump stations mainly lie in frequent blockages by solids, reduced suction efficiency of vacuum pumps due to the high-altitude and low-pressure environment, insufficient sewage flow rate, inability to effectively transport sewage containing solids, and easy deposition of solids at pipe elbows and valves, further increasing the risk of blockage.

[0003] In the short term, the impact of solid blockages on plateau vacuum pump stations is that blockages can cause abnormal fluctuations in vacuum degree and frequent overload of the pump body, requiring manual cleaning or shutdown for maintenance. However, in plateau areas, the population is sparse and transportation is inconvenient, resulting in a long operation and maintenance response cycle. During this period, sewage retention may cause pipeline freezing and equipment damage, significantly increasing maintenance costs. In the long term, it affects the operation efficiency of the vacuum pump station, resulting in the inability of the vacuum pump station to properly treat sewage. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an underground vacuum pump station.

[0005] The technical solution is as follows: An underground vacuum pump station includes an integral housing. A maintenance opening is fixedly connected to the top of the integral housing, and the bottom of the maintenance opening is in communication with the interior of the integral housing. A tank sealing plate is fixedly connected inside the integral housing. Above the tank sealing plate is an operation room. A sewage inlet vacuum pipe is fixedly connected to the top of the tank sealing plate. A non-rising stem gate valve is fixedly installed on the sewage inlet vacuum pipe. A shredding assembly is fixedly connected inside the sewage inlet vacuum pipe. The shredding assembly includes a fixed ring fixedly connected inside the sewage inlet vacuum pipe. A sewage collection sleeve is fixedly connected to the fixed ring. A ball is arranged inside the sewage collection sleeve. A rotating frame is arranged between the sewage collection sleeve and the ball. One side of the rotating frame away from the fixed ring is fixedly connected to a rotating rod. A plurality of fan blades are arranged at one end of the rotating rod away from the rotating frame. A plurality of first cutting knives are fixedly connected to one end of the rotating frame away from the rotating rod. A plurality of second cutting knives are fixedly connected to the inner side of the fixed ring.

[0006] Furthermore, a top cover is rotatably connected to the top of the maintenance opening. A ladder is fixedly installed inside the maintenance opening. The tank sealing plate divides the interior of the integral housing into an operation room at the top and a sewage storage room at the bottom. The bottom of the integral housing is spherical. The top of the sewage inlet vacuum pipe extends to the outside of the integral housing. One end of the sewage inlet vacuum pipe extending to the outside of the integral housing is fixedly connected to the sewage pipe of the user. The bottom of the sewage inlet vacuum pipe is in communication with the sewage storage room.

[0007] Furthermore, the sewage collection sleeve is in the shape of a funnel placed horizontally. A first rolling groove is provided on the inner surface of the sewage collection sleeve near the fixed ring. A second rolling groove corresponding to the first rolling groove on the sewage collection sleeve is provided on the outer ring surface of the rolling ball. The rotating frame is located between the first rolling groove and the second rolling groove. The inclination directions of the first cutting knife and the second cutting knife are opposite.

[0008] Furthermore, two double-support pumps are fixedly connected to the top of the tank sealing plate. A vacuum sewage suction pipe is fixedly connected to one side of the double-support pump close to the sewage inlet vacuum pipe. A sewage discharge pipe is fixedly connected to the other side of the double-support pump away from the vacuum sewage suction pipe.

[0009] Furthermore, the double-support pump is specifically a cam pump. A heater is provided on the double-support pump. The bottom of the vacuum sewage suction pipe passes through the tank sealing plate and extends to the bottom of the inner cavity of the integrated housing. The top of the sewage discharge pipe passes through the integrated housing and extends to the outside of the integrated housing. One end of the sewage discharge pipe located outside the integrated housing is connected to an existing sewage centralized pipeline.

[0010] Furthermore, two claw vacuum pumps are fixedly connected to the tank sealing plate. Dust filters are fixedly connected to the tops of the two claw vacuum pumps. A vacuum pumping manifold is fixedly connected to the tank sealing plate. Two transparent filters are fixedly connected between the vacuum pumping manifold and the dust filters. An odor discharge pipe is fixedly connected to the claw vacuum pump. A ventilation pipe is fixedly connected to the top of the integrated housing.

[0011] Furthermore, steel wire hoses are provided between the two transparent filters and the two dust filters. The odor discharge pipe is composed of two sub-pipes and one main pipe. The two sub-pipes of the odor discharge pipe are respectively connected to the two claw vacuum pumps. The main pipe of the odor discharge pipe extends upward above the integrated housing. A ventilator for rapid ventilation is provided inside the ventilation pipe. The bottom of the ventilation pipe is connected to the inside of the integrated housing. The lengths of the ventilation pipe and the main pipe of the odor discharge pipe located outside the integrated housing are the same.

[0012] Furthermore, an insertion type liquid level sensor is fixedly connected to the top of the tank sealing plate. A pressure transmitter is provided on the tank sealing plate. A vacuum interface valve is fixedly connected to the tank sealing plate. A system control box is fixedly connected to the inner side wall of the integrated housing.

[0013] Furthermore, the insertion type liquid level sensor specifically includes a body and a detection head. The detection head of the insertion type liquid level sensor passes through the tank sealing plate downward and extends to the bottom of the inner cavity of the integrated housing. The middle part of the vacuum interface valve is connected to the sewage storage room below the tank sealing plate.

[0014] As described above, the beneficial effects of an underground vacuum pump station in the present invention are as follows: The high-speed flowing sewage will effectively drive the rotation of the rotating frame. During the rotation of the rotating frame, the first cutting knife will be driven to rotate. During the rotation of the first cutting knife, it will cooperate with the second cutting knife in contact to chop the solid substances in the sewage. After the solid substances are chopped by the first cutting knife and the second cutting knife, the situation of solid substances blocking the pipeline can be reduced, effectively improving the efficiency of sewage treatment. In addition, it can prevent the solid substances from imposing a load on the internal components of the equipment, further reducing the maintenance cost; The sewage and solid particles flow through the sewage discharge pipe towards the centralized sewage pipe, realizing the rapid discharge of sewage. Through the pump suction method, the sewage can be effectively discharged in a timely manner, preventing the problem of odor caused by sewage accumulation; The claw-type vacuum pump will discharge the odor from the odor discharge pipe to the outside, realizing the discharge of the odor to the outside, preventing the odor from being stored in the sewage storage room for too long and generating biogas. In addition, it can prevent the pipeline from being corroded by hydrogen sulfide or ammonia in the odor, and discharging the odor to reduce the generation of biogas can also reduce the explosion risk; The ventilator allows the external air to be sent into the operation room of the integrated housing through the ventilation pipe, and also allows the air in the integrated housing to be discharged to the outside through the ventilation pipe, realizing the heat dissipation of the equipment in the operation room of the integrated housing, preventing the equipment from being unable to dissipate heat during long-term operation underground, reducing the problem of over-high temperature, ensuring that the equipment always maintains an appropriate temperature during operation, reducing the overload of the equipment operation caused by over-high temperature, and increasing the service life of the equipment operation; Under the suction of the vacuum interface valve, the water accumulated on the tank sealing plate will be pumped into the sewage storage room of the integrated housing. The leaked water will enter the sewage storage room and mix with the sewage, and the leaked water will be treated together with the sewage, preventing the leaked water from accumulating in the operation room, avoiding the influence on the operation of the equipment in the operation room after excessive accumulation of water, and avoiding the problem of short circuit of equipment components caused by water entering the operation room in the upper part of the integrated housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of components such as the claw-type vacuum pump, dust filter, and transparent filter of the present invention; Figure 3 It is a three-dimensional schematic diagram of components such as the pressure transmitter, vacuum interface valve, and system control box of the present invention; Figure 4 It is a three-dimensional schematic diagram of the sectional view of the integrated housing and the inspection opening of the present invention; Figure 5 It is a three-dimensional schematic diagram of the internal top view of the integrated housing of the present invention; Figure 6 It is a three-dimensional schematic diagram of components such as the vacuum sewage inlet pipe and the non-rising stem gate valve of the present invention; Figure 7 It is a sectional three-dimensional schematic diagram of the internal structure of the vacuum sewage inlet pipe of the present invention; Figure 8 It is a three-dimensional schematic diagram of components such as cutting knife 1 and cutting knife 2 of the present invention.

[0016] Among them, the reference numerals in the present invention are: 1. Integral housing; 2. Maintenance opening; 3. Tank sealing plate; 4. Sewage inlet vacuum pipe; 5. Non-rising stem gate valve; 6. Double-support pump; 7. Vacuum sewage suction pipe; 8. Sewage discharge pipe; 9. Claw vacuum pump; 10. Dust filter; 11. Transparent filter; 12. Vacuum pumping manifold; 13. Odor discharge pipe; 14. Vent pipe; 15. Insertion type liquid level sensor; 16. Pressure transmitter; 17. Vacuum interface valve; 18. System control box; 41. Fixed ring; 42. Sewage collection sleeve; 43. Ball; 44. Rotating frame; 45. Rotating rod; 46. Fan blade; 47. Cutting knife 1; 48. Cutting knife 2. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0018] The embodiments provided by the present invention will be elaborated in detail below: As Figures 1 to 8 shown, a buried vacuum pump station includes an integral housing 1. A maintenance opening 2 is fixedly connected to the top of the integral housing 1. The bottom of the maintenance opening 2 is communicated with the inside of the integral housing 1. The top of the maintenance opening 2 is rotatably connected with a top cover, and a ladder is fixedly installed inside the maintenance opening 2 to facilitate maintenance personnel to enter the inside of the integral housing 1 from inside the maintenance opening 2 for maintenance. A tank sealing plate 3 is fixedly connected inside the integral housing 1. The tank sealing plate 3 divides the inside of the integral housing 1 into an operation room at the top and a sewage storage room at the bottom. The bottom of the integral housing 1 is spherical, so that sewage can converge to the bottom of the integral housing 1 for easy suction. Above the tank sealing plate 3 is the operation room, which is convenient for installing components and maintenance personnel to perform maintenance operations. A sewage inlet vacuum pipe 4 is fixedly connected to the top of the tank sealing plate 3. The top of the sewage inlet vacuum pipe 4 extends to the outside of the integral housing 1. One end of the sewage inlet vacuum pipe 4 extending to the outside of the integral housing 1 is fixedly connected to the sewage pipe of the user. The bottom of the sewage inlet vacuum pipe 4 passes through the tank sealing plate 3 and is communicated with the sewage storage room. A non-rising stem gate valve 5 is fixedly installed on the sewage inlet vacuum pipe 4. A chopping assembly for chopping solid substances in the sewage is arranged inside the sewage inlet vacuum pipe 4; As Figures 6 to 8 shown, the shredding assembly includes a fixing ring 41 fixedly connected inside the sewage inlet vacuum tube 4. A sewage collection sleeve 42 is fixedly connected to the fixing ring 41. The sewage collection sleeve 42 is in the shape of a horizontally placed funnel. A first rolling groove is formed on the inner surface of the sewage collection sleeve 42 close to the fixing ring 41. A ball 43 corresponding to the position of the first rolling groove is arranged inside the sewage collection sleeve 42. A second rolling groove corresponding to the first rolling groove on the sewage collection sleeve 42 is formed on the outer ring surface of the ball 43. A rotating frame 44 is connected between the first rolling groove of the sewage collection sleeve 42 and the second rolling groove of the ball 43. The rotating frame 44 can rotate on the sewage collection sleeve 42 in cooperation with the ball 43. A rotating rod 45 is fixedly connected to the side of the rotating frame 44 away from the fixing ring 41. A plurality of fan blades 46 arranged in a circumferential array are provided at one end of the rotating rod 45 away from the rotating frame 44. A plurality of first cutting knives 47 arranged in a circumferential array are fixedly connected to the end of the rotating frame 44 away from the rotating rod 45. A plurality of second cutting knives 48 arranged in a circumferential array are fixedly connected to the inner side of the fixing ring 41. A gap for cutting solid substances in the sewage is left between the first cutting knife 47 and the second cutting knife 48. The inclination directions of the first cutting knife 47 and the second cutting knife 48 are opposite, so as to cut the solid substances in the dirt during the rotation of the first cutting knife 47 in cooperation with the second cutting knife 48.

[0019] As Figures 1 to 5 shown, two double support pumps 6 are fixedly connected to the top of the tank sealing plate 3. The double support pump 6 is specifically a cam pump. A heater is provided on the double support pump 6 to heat the dirt when it enters the double support pump 6, so as to avoid the problem that the dirt cannot be sucked due to condensation when the temperature is too low. A vacuum sewage suction pipe 7 is fixedly connected to the side of the double support pump 6 close to the sewage inlet vacuum tube 4. The bottom of the vacuum sewage suction pipe 7 passes through the tank sealing plate 3 and extends to the bottom of the inner cavity of the integrated housing 1, so that the double support pump 6 can completely suck the dirt below the tank sealing plate 3 during suction. A sewage discharge pipe 8 is fixedly connected to the side of the double support pump 6 away from the vacuum sewage suction pipe 7. The top of the sewage discharge pipe 8 passes through the integrated housing 1 and extends to the outside of the integrated housing 1. One end of the sewage discharge pipe 8 located outside the integrated housing 1 is connected to an existing sewage centralized pipeline.

[0020] As Figures 1 to 5As shown, two claw vacuum pumps 9 are fixedly connected to the tank sealing plate 3. Dust filters 10 are fixedly connected to the tops of the two claw vacuum pumps 9. A vacuum extraction manifold 12 is fixedly connected to the tank sealing plate 3. Two transparent filters 11 are fixedly connected between the vacuum extraction manifold 12 and the dust filters 10. Steel wire hoses are arranged between the two transparent filters 11 and the two dust filters 10. An odor exhaust pipe 13 is fixedly connected to the claw vacuum pump 9. The odor exhaust pipe 13 is composed of two sub-pipes and one main pipe. The two sub-pipes of the odor exhaust pipe 13 are respectively communicated with the two claw vacuum pumps 9. The main pipe of the odor exhaust pipe 13 extends upward above the integrated housing 1. A ventilation pipe 14 is fixedly connected to the top of the integrated housing 1. A ventilator for rapid ventilation is arranged inside the ventilation pipe 14. The bottom of the ventilation pipe 14 is communicated with the inside of the integrated housing 1. The length of the ventilation pipe 14 and the outer end of the main pipe of the odor exhaust pipe 13 located outside the integrated housing 1 are the same.

[0021] As Figures 1 to 5 As shown, an insertion type liquid level sensor 15 is fixedly connected to the top of the tank sealing plate 3. The insertion type liquid level sensor 15 specifically includes a body and a detection head. The detection head of the insertion type liquid level sensor 15 extends downward through the tank sealing plate 3 to the bottom of the inner cavity of the integrated housing 1 for detecting the height of the dirt liquid level in the sewage storage room inside the integrated housing 1. A pressure transmitter 16 for detecting whether there is liquid on the tank sealing plate 3 is arranged on the tank sealing plate 3. A vacuum interface valve 17 is fixedly connected to the tank sealing plate 3. The middle of the vacuum interface valve 17 is communicated with the sewage storage room below the tank sealing plate 3 for sucking the water leaked from the components in the operation room or the water leaked into the operation room from the outside to the sewage storage room below the tank sealing plate 3. A system control box 18 is fixedly connected to the inner side wall of the integrated housing 1. The system control box 18 is used to control the components inside the operation piece.

[0022] Combined with the above preferred embodiments, the following is the entire working process and working principle of the above embodiments: The working state is: The integrated housing 1 is mainly used in high-altitude plateau areas. The main body of the integrated housing 1 is buried at least six meters below the frozen soil layer, and the top ends of the maintenance port 2, the main pipe of the odor exhaust pipe 13 and the ventilation pipe 14 all protrude from the soil layer.

[0023] The shredding assembly shreds the solid dirt entering the sewage inlet vacuum pipe 4: The claw vacuum pump 9 is started by the system control box 18. The claw vacuum pump 9 evacuates the sewage storage chamber in the integrated housing 1 through the transparent filter 11 and the vacuum extraction manifold 12. The non-rising stem gate valve 5 is in the open state. The user transports sewage through the sewage pipeline into the interior of the sewage inlet vacuum pipe 4. Under the action of the internal vacuum state of the sewage storage chamber, the sewage flows from the sewage inlet vacuum pipe 4 into the sewage storage chamber of the integrated housing 1. During the process of the sewage entering the interior of the sewage inlet vacuum pipe 4, the sewage will be concentrated under the gathering effect of the sewage collection sleeve 42, and the sewage will flow faster according to Bernoulli's principle. The sewage with increased flow velocity will impact the fan blade 46. After the sewage impacts the fan blade 46, it will drive the rotating rod 45 to rotate. The rotating rod 45 drives the rotating frame 44 to rotate. At this time, the rotating frame 44 will rotate inside the sewage collection sleeve 42 through the ball 43, so that the high-speed flowing sewage will effectively drive the rotating frame 44 to rotate. During the rotation of the rotating frame 44, it will drive the cutting knife one 47 to rotate. During the rotation of the cutting knife one 47, it will cut the solid matter in the sewage with the cutting knife two 48, so that the solid matter in the sewage is cut into solid particles. After the solid matter is shredded by the cutting knife one 47 and the cutting knife two 48, the situation of solid matter blocking the pipeline can be reduced, effectively improving the efficiency of sewage treatment. In addition, it avoids the load on the internal components of the equipment caused by solid matter, further reducing the maintenance cost.

[0024] The double-support pump 6 transports the sewage: When the insertion type liquid level sensor 15 detects that the liquid level of the sewage and solid particles entering the interior of the sewage storage chamber is too high, at this time, the system control box 18 controls the double-support pump 6 to start. At this time, the double-support pump 6 will suck the sewage and solid particles in the sewage storage chamber through the vacuum sewage suction pipe 7, so that the sewage and solid particles flow into the double-support pump 6. The double-support pump 6 then discharges the sewage and solid particles to the sewage discharge pipe 8, and then through the sewage discharge pipe 8, the sewage and solid particles flow into the centralized sewage pipe, realizing the rapid discharge of sewage. Through the pump suction method, the sewage can be effectively discharged in time, preventing the problem of odor caused by sewage accumulation.

[0025] Gas discharge: The odor generated by the sewage in the sewage storage chamber will fill the sewage storage chamber. When the claw vacuum pump 9 sucks the air in the sewage storage chamber, it will simultaneously suck out the odor filling the sewage storage chamber. The odor will flow from the vacuum extraction manifold 12 through the transparent filter 11 into the dust filter 10, and finally the odor will continue to flow into the claw vacuum pump 9 from the dust filter 10. The claw vacuum pump 9 will discharge the odor from the odor discharge pipe 13 to the outside, realizing the discharge of the odor to the outside, avoiding the generation of biogas due to the odor being stored in the sewage storage chamber for too long. In addition, it can avoid the corrosion of the pipeline by hydrogen sulfide or ammonia in the odor, and discharging the odor to reduce the generation of biogas can also reduce the explosion risk.

[0026] The system control box 18 starts the ventilator in the ventilation pipe 14. After the ventilator starts, it can quickly send the external air into the operation room inside the integrated housing 1. Since the integrated housing 1 is mainly used in high-altitude plateau areas where the temperature is low, in addition, by using the ventilator to send the external air into the operation room of the integrated housing 1 through the ventilation pipe 14, it can also make the air inside the integrated housing 1 be discharged outward through the ventilation pipe 14, realizing the heat dissipation of the equipment in the operation room of the integrated housing 1, preventing the equipment from being unable to dissipate heat during long-term operation underground, being able to reduce the problem of over-high temperature, ensuring that the equipment always maintains an appropriate temperature during operation, reducing the overload of the equipment operation caused by over-high temperature, and increasing the service life of the equipment operation.

[0027] Timely discharge of accumulated water leakage: During the long-term operation of the equipment inside the operation room, water leakage may occur at the joints between the equipment inside the operation room due to loosening or aging. If there is a problem of water leakage, or when the water in the soil layer enters the operation room through the gaps in the integrated housing 1, the water will gradually accumulate on the potting plate 3. When the water gradually increases, it is easy to cause a short circuit in the wiring of the equipment inside the operation room, resulting in equipment damage. At this time, the pressure transmitter 16 will detect that the water level on the potting plate 3 is too high, and the pressure transmitter 16 will control the vacuum interface valve 17 to open. Under the suction of the vacuum interface valve 17, the water accumulated on the potting plate 3 will be pumped into the sewage storage room of the integrated housing 1. The leaked water will enter the sewage storage room and mix with the sewage, and the leaked water will be treated together with the sewage, preventing the leaked water from accumulating in the operation room, avoiding the impact on the operation of the equipment in the operation room caused by excessive accumulated water, and avoiding the problem of short circuit of equipment parts caused by water entering the operation room in the upper part of the integrated housing 1.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An underground vacuum pump station, characterized in that: The integrated housing (1) comprises an integrated housing (1), the top of which is fixedly connected to an inspection port (2), the bottom of which is in communication with the interior of the integrated housing (1), the interior of which is fixedly connected to a tank sealing plate (3), the top of which is an operating room, the top of which is fixedly connected to a sewage inlet vacuum pipe (4), a concealed stem gate valve (5) is fixedly mounted on the sewage inlet vacuum pipe (4), and the interior of the sewage inlet vacuum pipe (4) is fixedly connected to a shredder assembly; The shredding assembly comprises a fixed ring (41) fixedly connected to the inside of the sewage inlet vacuum tube (4), a sewage collecting sleeve (42) fixedly connected to the fixed ring (41), a ball bearing (43) arranged inside the sewage collecting sleeve (42), a rotating frame (44) arranged between the sewage collecting sleeve (42) and the ball bearing (43), a rotating rod (45) fixedly connected to the side of the rotating frame (44) away from the fixed ring (41), a plurality of fan blades (46) at one end of the rotating rod (45) away from the rotating frame (44), a plurality of first cutting knives (47) fixedly connected to one end of the rotating frame (44) away from the rotating rod (45), and a plurality of second cutting knives (48) fixedly connected to the inside of the fixed ring (41).

2. The underground vacuum pump station according to claim 1, characterized in that: The top of the inspection port (2) is rotatably connected to a top cover, a ladder is fixedly installed inside the inspection port (2), a tank sealing plate (3) divides the inside of the integrated housing (1) into an operating room at the top and a sewage storage room at the bottom, the bottom of the integrated housing (1) is spherical, the top of the sewage inlet vacuum pipe (4) extends to the outside of the integrated housing (1), one end of the sewage inlet vacuum pipe (4) extending to the outside of the integrated housing (1) is fixedly connected to the sewage pipe of the user, and the bottom of the sewage inlet vacuum pipe (4) is connected to the sewage storage room.

3. The underground vacuum pump station according to claim 1, characterized in that: The dirt collecting sleeve (42) is in the shape of a funnel placed transversely. A rolling groove 1 is formed on the inner surface of the dirt collecting sleeve (42) on a side close to the fixing ring (41). A rolling groove 2 corresponding to the rolling groove 1 on the dirt collecting sleeve (42) is formed on the outer surface of the ball bearing (43). The rotating frame (44) is located between the rolling groove 1 and the rolling groove 2. The inclination directions of the cutting blade 1 (47) and the cutting blade 2 (48) are opposite.

4. The underground vacuum pump station according to claim 1, characterized in that: Two double-support pumps (6) are fixedly connected to the top of the tank sealing plate (3); a vacuum sewage suction pipe (7) is fixedly connected to one side of the double-support pump (6) close to the sewage inlet vacuum pipe (4); and a sewage discharge pipe (8) is fixedly connected to one side of the double-support pump (6) away from the vacuum sewage suction pipe (7).

5. The underground vacuum pump station according to claim 4, characterized in that: The double-support pump (6) is specifically a cam pump. A heater is provided on the double-support pump (6). The bottom of the vacuum sewage suction pipe (7) passes through the tank sealing plate (3) and extends to the bottom of the inner cavity of the integrated shell (1). The top of the sewage discharge pipe (8) passes through the integrated shell (1) and extends to the outside of the integrated shell (1). One end of the sewage discharge pipe (8) located outside the integrated shell (1) is connected to an existing sewage collection pipeline.

6. The underground vacuum pump station according to claim 1, characterized in that: Two claw-type vacuum pumps (9) are fixedly connected to the sealing plate (3), dust filters (10) are fixedly connected to the tops of the two claw-type vacuum pumps (9), a vacuum manifold (12) is fixedly connected to the sealing plate (3), two transparent filters (11) are fixedly connected between the vacuum manifold (12) and the dust filters (10), an odor exhaust pipe (13) is fixedly connected to the claw-type vacuum pumps (9), and a ventilation pipe (14) is fixedly connected to the top of the integrated housing (1).

7. The underground vacuum pump station according to claim 6, characterized in that: A steel hose is provided between the two transparent filters (11) and the two dust filters (10). The odor exhaust pipe (13) is composed of two auxiliary pipes and a main pipe. The two auxiliary pipes of the odor exhaust pipe (13) are respectively connected to the two claw-type vacuum pumps (9). The main pipe of the odor exhaust pipe (13) extends upward to the top of the integrated housing (1). A ventilator for rapid ventilation is provided inside the ventilation pipe (14). The bottom of the ventilation pipe (14) is connected to the inside of the integrated housing (1). The ventilation pipe (14) and the main pipe of the odor exhaust pipe (13) are of the same length at one end located outside the integrated housing (1).

8. The underground vacuum pump station according to claim 1, characterized in that: An insertable liquid level sensor (15) is fixedly connected to the top of the sealing plate (3), a pressure transmitter (16) is provided on the sealing plate (3), a vacuum interface valve (17) is fixedly connected to the sealing plate (3), and a system control box (18) is fixedly connected to the inner wall of the integrated housing (1).

9. The underground vacuum pump station according to claim 8, characterized in that: The insertion type liquid level sensor (15) specifically comprises a body and a detection head. The detection head of the insertion type liquid level sensor (15) extends downward through the sealing plate (3) to the bottom of the inner cavity of the integrated housing (1). The middle part of the vacuum interface valve (17) is connected to the sewage storage room below the sealing plate (3).

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