Multi-section long-distance concentrated vacuum cleaning system of bulk material transferring and loading system

Abstract

The invention relates to the technical field of vacuum cleaning systems, in particular to a multi-section long-distance concentrated vacuum cleaning system for a bulk cargo transfer loading system, which is characterized in that a vacuum pump, a vacuum buffer tank and a bag type pulse dust collector are sequentially arranged and connected through a negative pressure main pipeline, and a cleaning unit is arranged at the tail end of the vacuum cleaning system; comprising a plurality of first-stage cleaning pipe networks, the first-stage cleaning pipe networks are connected with a plurality of second-stage cleaning pipe networks, and the second-stage cleaning pipe networks are located at the tail end of the whole system and connected with dust suction ports. According to the system, two-stage roots vacuum pumps are connected in series for use, a vacuum buffer tank and an automatic control system are matched, pressure is increased, stable vacuum air source pressure is continuously conveyed, and the system is suitable for a large-area distributed cleaning range; the coarse separation filter element lined with the steel mesh is additionally arranged at the outlet of the distributed cyclone separator, and the cyclone separator is matched with the film-coated filter element for use, so that the dust separation effect is improved, and the burden on a subsequent filter system is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum cleaning systems, and in particular to a multi-section long-distance centralized vacuum cleaning system for a bulk material transfer and loading system. Background Art

[0002] In the process of sand and gravel mining, transportation, crushing and grading, and loading, dust and ash are everywhere in the complete set of projects, especially in the excavation, crushing and grading, and loading sections. The dust hazards are the most serious. There is often a thick layer of dust on the ground and equipment in the mining room, crusher room, equipment platform, cable tray, transfer station, and trestle. During normal operation, the dust is flying, which seriously pollutes the environment and is not conducive to the health of workers. At present, the conventional use of manual cleaning will not only cause secondary dust, but also incomplete cleaning, and require a lot of manpower, increase labor costs, and damage the health of operators. In order to prevent secondary dust, some places will use hydraulic washing of the ground, which will cause the equipment to be in a humid environment for a long time, causing serious corrosion of the equipment, accelerating equipment aging, and reducing the service life of the equipment. At the same time, it will also cause damage to the workshop building. The sewage after washing requires sewage treatment equipment, which increases the production cost of the enterprise. Some companies in the industry have also designed simple vacuum cleaning systems to clean the dust in the site through vacuum negative pressure, and deal with the problems existing in traditional cleaning methods. However, due to the large area of ​​the construction site and the large cleaning area, the vacuum cleaning systems in the existing technology mostly use high-pressure fans and vacuum pumps as air sources, which have low pressure, unstable wind pressure, short cleaning distance, small area, and incomplete cleaning of dust particles with high specific gravity and large particle size. The workload required for manual assistance is large, and the degree of automation is not high. The fan pressure and air volume cannot be automatically adjusted according to the number and quantity of points used, and the machine must be turned on all the time, resulting in high power consumption and loss, as well as problems such as settlement and blockage of the cleaning pipeline. There is room for improvement. Summary of the invention

[0003] In response to the above-mentioned defects and problems such as low air source pressure, unstable air source, short vacuum cleaning distance for dust with high specific gravity and large particle size, inability to use multiple sections at the same time, and incomplete cleaning, the present invention provides a high-vacuum multi-section long-distance vacuum cleaning system suitable for mining, transportation, crushing and grading, and loading processes of mine sand and gravel under extreme working conditions.

[0004] The solution adopted by the present invention to solve its technical problem is: a multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system, including a vacuum pump, a vacuum buffer tank, a bag pulse dust collector and a cleaning unit, wherein the vacuum pump, the vacuum buffer tank and the bag pulse dust collector are arranged in sequence and connected through a negative pressure main pipeline, and the cleaning unit is arranged at the end of the vacuum cleaning system, including a plurality of primary cleaning pipe networks, and the primary cleaning pipe network is connected to a plurality of secondary cleaning pipe networks, and the secondary cleaning pipe network is located at the end of the entire system and connected to a dust suction port; a cyclone separator is connected to the front end of each primary cleaning pipe network, and the cyclone separator is connected to the bag pulse dust collector through a confluence pipe, and a pneumatic butterfly valve is installed on the confluence pipe; It also includes a selection control unit arranged at the front end of the entire cleaning unit. Each cleaning unit is connected to the selection control unit through a converging pipe. The selection control unit is used to merge the various cleaning units together and control the various cleaning units to operate intermittently in sequence. A compensation mechanism is arranged in the selection control unit to cooperate with it to prevent the vacuum pump from running idly.

[0005] Furthermore, the selection control unit includes a confluence tank, on the outer side of which a confluence pipe interface matching the number of cleaning units is arranged, the cleaning units are connected to the confluence pipe interface via a confluence pipe, and a constant flow cylinder is rotatably mounted on the inner bottom of the confluence tank, the selection control unit also includes a driving mechanism for controlling the rotation of the constant flow cylinder, a constant flow hole is opened on the side wall of the constant flow cylinder, and when the constant flow cylinder rotates, the constant flow hole can be connected with each confluence pipe interface in turn, and a sealing member is arranged on the constant flow cylinder, the sealing member is used to seal the gap between the confluence tank and the constant flow cylinder and to provide a seal around the constant flow hole, and when the constant flow hole is rotated to a position connected to one of the confluence pipe interfaces, except for the confluence pipe interface connected to it, the other confluence pipe interfaces are blocked.

[0006] Furthermore, a casing is fixed on the outer wall of the confluence tank, the driving mechanism includes a motor installed in the casing, a gear is fixedly mounted on the output end of the motor, a gear ring is provided on the outer wall of the stator, and the gear is meshed with the gear ring.

[0007] Furthermore, a cone is installed in the confluence tank above the constant flow cylinder, and the sealing member is a lower sealing airbag arranged on the outer wall of the constant flow cylinder and an upper sealing airbag on the outer wall of the cone, and the lower sealing airbag and the upper sealing airbag are connected by an air guide pipe, and a two-way air pump is installed on the air guide pipe. The two-way air pump can control the gas in the lower sealing airbag and the upper sealing airbag to flow to each other, thereby blocking the gap between the constant flow cylinder or the cone and the confluence tank.

[0008] Furthermore, a rotating joint is installed at one end of the two-way air pump, and the air guide tube on the lower sealing airbag is connected to the two-way air pump through the rotating joint.

[0009] Furthermore, the compensation mechanism includes a compensation tank arranged on the top of the confluence tank and connected thereto, a piston is matchedly mounted in the compensation tank, and the piston is connected to the compensation tank through a spring installation, and a breathing hole is opened on the top of the compensation tank.

[0010] Furthermore, an outlet sealing plate is hinged at the bottom of the outlet of the cyclone separator, and the outer end of the outlet sealing plate is connected to the cyclone separator through a tension spring. When the system is in a negative pressure state, the outlet sealing plate will be sucked by the negative pressure and tightly attached to the outlet of the cyclone separator to block the outlet. After the negative pressure state of the system ends, the tension spring will pull the outlet sealing plate to rotate and open.

[0011] Furthermore, a membrane filter element is installed inside the cyclone separator.

[0012] Furthermore, the confluence pipe shortens the cross-sectional area according to the theory of the Venturi pipe.

[0013] Furthermore, a ground valve is installed at the end of the secondary cleaning pipe network, and the ground valve is installed on the floor of the working area.

[0014] Furthermore, the vacuum pump adopts a two-stage Roots vacuum pump.

[0015] The beneficial effects of the present invention are as follows: the system adopts a two-stage Roots vacuum pump in series, cooperates with a vacuum buffer tank and an automatic control system, improves the pressure and continuously delivers a stable vacuum air source pressure, and is suitable for a large area of ​​distributed cleaning range; a coarse separation filter element lined with a steel mesh is added at the outlet of the distributed cyclone separator, and the cyclone separator is used in conjunction with a coated filter element, which improves the dust separation effect and reduces the burden on the subsequent filtration system, and the confluence pipe is designed according to the Venturi pipe theory, which avoids the problem of dust accumulation in the pipe and maintains the long-term effective operation of the system; By selecting the design of the control unit and the constant flow cylinder, the driving mechanism controls the rotation of the constant flow cylinder so that the constant flow holes can be connected with each cleaning unit in turn to provide independent negative pressure for them, thereby realizing independent intermittent operation of the cleaning unit in each work section. In this way, there is no need for a vacuum pump to drive each cleaning unit to operate at the same time, and negative pressure is only provided for specific areas when needed, which can reduce the power consumption requirements of the equipment while cleaning the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of a single cleaning system of the present invention; Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of a selection control unit of the present invention; Figure 4 It is a schematic diagram of a front view and a cross-sectional three-dimensional structure of a selection control unit of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the stator cylinder of the present invention; Figure 6 It is a schematic diagram of the structure of the confluence pipe of the present invention; Figure 7 It is a schematic diagram of the local structure of the cyclone separator of the present invention; Figure 8 It is a schematic diagram of the connection structure between the selection control unit and the confluence pipe of the present invention.

[0017] In the figure: 1. vacuum pump; 2. vacuum buffer tank; 3. bag pulse dust collector; 4. selection control unit; 41. confluence tank; 42. confluence pipe interface; 43. constant flow cylinder; 44. constant flow hole; 45. lower sealing airbag; 46. cone cylinder; 47. upper sealing airbag; 48. two-way air pump; 49. rotary joint; 410. air guide pipe; 411. motor; 412. gear; 413. gear ring; 414. compensation tank; 415. spring; 416. piston; 417. breathing hole; 5. cleaning unit; 51. primary cleaning pipe network; 52. secondary cleaning pipe network; 53. ground valve; 6. confluence pipe; 7. cyclone separator; 71. membrane filter element; 72. outlet sealing plate; 73. tension spring; 8. pneumatic butterfly valve; 9. negative pressure main pipeline. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1-8 The present invention provides a technical solution for a multi-section, long-distance centralized vacuum cleaning system for a bulk material transfer and loading system: Example

[0020] according to Figure 1 and Figure 2As shown, the vacuum cleaning system includes a vacuum pump 1, a vacuum buffer tank 2, a bag pulse dust collector 3 and a cleaning unit 5. The vacuum pump 1, the vacuum buffer tank 2 and the bag pulse dust collector 3 are arranged in sequence and connected in sequence through a negative pressure main pipeline 9. The cleaning unit 5 is arranged at the end of the vacuum cleaning system. According to the current situation of long distances and dispersed locations in sand and gravel, mining excavation, transportation, crushing and grading, and loading systems, a centralized vacuum cleaning unit is divided into several different primary cleaning pipe networks 51 according to different sections of the project. The primary cleaning pipe network 51 is connected to the secondary cleaning pipe network 52 at equal intervals according to the area and working conditions of each area. The secondary cleaning pipe network 52 is located at the end of the whole system, connected to the dust suction port, and plays the role of negative pressure suction of dust. Each group of primary cleaning pipe network 51 and secondary cleaning pipe network 52 forms an independent section, which is responsible for the cleaning point of this area; a cyclone separator 7 is connected to the front end of each primary cleaning pipe network 51, and the input end of the cyclone separator 7 is connected to the front end of the primary cleaning pipe network 51, and the output end is connected to the input end of the bag pulse dust collector 3 through the confluence pipe 6, and a pneumatic butterfly valve 8 is installed at the connection position between the output end of the cyclone separator 7 and the confluence pipe 6. All segmented cyclone separators 7 are connected to the bag pulse dust collector 3 through the confluence pipe 6 for secondary filtration. The confluence pipe 6 shortens the cross-sectional area according to the theory of the Venturi pipe to avoid dust accumulation in the pipe.

[0021] A ground valve 53 is installed at the end of the secondary cleaning pipe network 52. The ground valve 53 is installed on the floor of the working area and is suitable for the terminal suction port of the central vacuum cleaning system. It is connected to the vacuum cleaning system host through the pipe network.

[0022] In order to improve the pressure and gas source stability, the vacuum pump adopts a two-stage Roots vacuum pump in series, which is used in conjunction with a vacuum buffer tank 2 to increase the vacuum pressure while ensuring the output of continuous and stable vacuum pressure; and the gas source part adopts an independent control system, which can automatically adjust the number of Roots vacuum pumps used and the frequency conversion to adjust the speed to control the pressure according to the different usage points of the cleaning unit 5, thereby reducing power consumption.

[0023] During specific use, the two-stage Roots vacuum pump is started to put the entire vacuum cleaning system in a negative pressure state, and then the pneumatic butterfly valve 8 and the ground valve of the corresponding section are opened according to the working conditions of each area, so that the corresponding cleaning unit 5 is in a negative pressure suction state. Through the negative pressure suction of each cleaning point, the dust in the area is cleaned, thereby realizing the zoned negative pressure cleaning of dust points in each area. Example

[0024] Based on the first embodiment, the same points as those in the first embodiment will not be described in detail, and the differences are as follows: In each continuous process of sand and gravel or mining excavation, transportation, crushing, grading and loading, each independent work section will generate dust. Therefore, it is necessary to start dust cleaning in each work section, which requires a large power supply for the system. If each working area is turned on at the same time, it will cause excessive power consumption, and it takes a certain amount of time for dust to accumulate in each working area. If the cleaning unit in the area is always in a negative pressure state, but the cleaning area does not accumulate enough dust, this will cause a waste of power consumption. In order to solve this problem, this embodiment adds a selection control unit 4 at the front end of the cleaning unit 5.

[0025] like Figure 1 , Figure 3 and Figure 4 As shown, the control unit 4 includes a junction tank 41, and a junction pipe interface 42 matching the number of independent cleaning sections is arranged on the outside of the junction tank 41. The cleaning unit 5 is connected to the junction pipe interface 42 through the junction pipe 6. Figure 8 As shown, the cleaning unit 5 can be divided into a plurality of different independent cleaning sections according to different engineering areas, and the control unit 4 is selected to set a corresponding number of confluence pipe interfaces 42 according to the number of independent cleaning sections, so that each independent cleaning unit 5 can be separately connected to the confluence pipe interface 42 and converge in the confluence tank 41.

[0026] A constant flow cylinder 43 is rotatably mounted on the inner bottom of the confluence tank 41. The selection control unit 4 also includes a driving mechanism for controlling the rotation of the constant flow cylinder 43. A housing is fixed on the outer wall of the confluence tank 41. The driving mechanism includes a motor 411 installed in the housing. A gear 412 is fixedly mounted on the output end of the motor 411. A gear ring 413 is arranged on the outer wall of the constant flow cylinder 43. The gear 412 partially extends into the confluence tank 41 and meshes with the gear ring 413 on the outer wall of the constant flow cylinder 43. The constant flow cylinder 43 can be controlled to rotate in the confluence tank 41 through the driving mechanism. The specific structure of the constant flow cylinder 43 is as follows. Figure 5 As shown, a constant flow hole 44 is opened on the side wall of the constant flow cylinder 43. When the constant flow cylinder 43 rotates, the constant flow hole 44 can be connected with each confluence pipe interface 42 in sequence, and a sealing member is arranged on the constant flow cylinder 43. The sealing member is composed of a sealing ring arranged above and below the constant flow hole 44 and a sealing ring arranged around the constant flow hole 44. The sealing ring and the sealing ring are connected. The sealing ring can seal the gap between the confluence tank 41 and the constant flow cylinder 43. The sealing ring provides sealing around the constant flow hole 44, so that when the constant flow hole 44 is rotated to a position connected to one of the confluence pipe interfaces 42, except for the confluence pipe interface 42 connected to it, the other confluence pipe interfaces 42 are blocked.

[0027] Through the mutual cooperation between the above structures, when the entire vacuum cleaning system is running, the driving mechanism also runs synchronously, the fixed flow cylinder 43 is controlled to rotate to the position corresponding to the first confluence pipe interface 42, the confluence pipe 6 and the cleaning unit 5 connected to the current confluence pipe interface 42 are in a flow state, and the vacuum pump 1 provides negative pressure to clean the dust in the corresponding area of ​​the current cleaning unit 5 under negative pressure. The other cleaning units are not connected to the selection control unit 4 and do not need to be provided with negative pressure. After cleaning for a period of time, the fixed flow cylinder 43 rotates to the next confluence pipe interface 42 and connects to the next independent cleaning unit 5, so that the next cleaning unit Unit 5 is in a negative pressure suction state to suck away dust, while other cleaning units are in a closed state. Through the intermittent continuous rotation of the constant flow cylinder 43, it can be connected with each independent cleaning unit 5 in turn through the combining pipe interface 42 to make it in a negative pressure working state, thereby realizing the independent intermittent operation of the cleaning unit in each work section. The residence time of the constant flow cylinder 43 in the current cleaning system can be controlled and determined by the dust generation situation in the corresponding area. In this way, the vacuum pump 1 only needs to provide power to make one vacuum cleaning unit run at negative pressure to complete the operation of the entire system, thereby achieving the goal of cleaning dust while reducing the power consumption requirements of the equipment. Example

[0028] On the basis of the second embodiment, if the sealing member adopts a traditional sealing ring or a sealing gasket, it will inevitably wear out after a long time of operation, resulting in poor sealing effect of the gap between the manifold 41 and the stator 43. Therefore, in order to improve the sealing effect, the sealing member can be set in the form of an airbag, such as Figure 3 and Figure 4 As shown, a cone cylinder 46 is installed above the constant flow cylinder 43 in the confluence tank 41. The cone cylinder 46 is installed in the confluence tank 41 through a straight plate, and a gap is reserved around it for gas to pass through. The seal includes a lower sealing airbag 45 arranged on the outer wall of the constant flow cylinder 43 and an upper sealing airbag 47 on the outer wall of the cone cylinder 46. The lower sealing airbag 45 and the upper sealing airbag 47 are connected by an air guide pipe 410, and a two-way air pump 48 is installed on the air guide pipe 410. Since the constant flow cylinder 43 needs to rotate in the confluence tank 41, a rotating joint 49 is installed at one end of the two-way air pump 48, and the air pipe on the lower sealing airbag 45 is connected to the two-way air pump 48 through the rotating joint 49, to ensure that the air guide pipe 410 does not affect the rotation of the constant flow cylinder 43 under normal ventilation conditions.

[0029] When the constant flow cylinder 43 rotates and changes position, the two-way air pump 48 draws the gas in the lower sealing airbag 45 into the upper sealing airbag 47, and the upper sealing airbag 47 bulges to seal the gap between the sealing cone 46 and the confluence tank 41, thereby sealing each confluence pipe interface 42, ensuring that all cleaning units 5 stop suction when the constant flow cylinder 43 changes position, and the lower sealing airbag 45 retracts away from the inner wall of the confluence tank 41, thereby eliminating the friction between the seal and the tank wall; when the constant flow cylinder 43 is changed position, the two-way air pump 48 draws the gas in the upper sealing airbag 47 into the lower sealing airbag 45, and the lower sealing airbag 45 bulges to seal the gap between the constant flow cylinder 43 and the confluence tank 41, ensuring that only the confluence pipe interface 42 aligned with the constant flow hole 44 can flow, and the other openings are blocked, and the upper sealing airbag 47 is deflated, opening the gap between the cone 46 and the confluence tank 41, so that the gas can flow out smoothly through the breathing hole 417. Example

[0030] On the basis of the third embodiment, the vacuum pump 1 continues to operate when the stator 43 rotates and changes position. Since the upper sealing airbag 47 seals the lower part of the manifold 41, the vacuum pump 1 will operate without load. In order to solve this problem, a compensation mechanism can be set on the top of the control unit 4, such as Figure 4 As shown, the compensation mechanism is composed of a compensation tank 414 arranged on the top of the selection control unit 4 and connected to the confluence tank 41, a piston 416 is matched and mounted in the compensation tank 414, and the piston 416 is installed and connected in the compensation tank 414 through a spring 415, the upper and lower ends of the spring 415 are respectively fixed on the inner top of the compensation tank 414 and the upper surface of the piston 416, and a breathing hole 417 is opened on the top of the compensation tank 414.

[0031] When the upper sealing airbag 47 blocks the confluence tank 41 during the rotation and transposition process of the constant flow cylinder 43, the vacuum pump 1 continues to run, and the negative pressure will suck the piston 416 downward, and the negative pressure suction compensation gas is provided to the vacuum pump 1 through the compensation tank 414 to prevent the vacuum pump from running unloaded. When the constant flow cylinder 43 is transposed and the corresponding cleaning unit 5 starts negative pressure dust suction, the piston 416 can be pulled up and returned to its position through the elastic force of the spring 415 to prepare for the next transposition compensation. Example

[0032] On the basis of the first embodiment, Figure 7As shown, in order to facilitate the dust discharge work of the cyclone separator 7, an outlet sealing plate 72 is hinged at the bottom of the outlet of the cyclone separator 7, and the outer end of the outlet sealing plate 72 is connected to the outer wall of the cyclone separator 7 through a tension spring 73. When the system is in a negative pressure working state, the outlet sealing plate 72 will be sucked by the negative pressure and tightly attached to the outlet of the cyclone separator 7 to block the outlet. When the negative pressure state of the system ends, under the cooperation of the elastic force of the tension spring 73, the outlet sealing plate 72 will be pulled to rotate and open the outlet, thereby facilitating the direct discharge of the dust collected in the cyclone separator 7.

[0033] In addition, a membrane filter element 71 is installed above the interior of the cyclone separator 7 to improve the separation and dust removal effect of the cyclone separator.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system, characterized in that: The system comprises a vacuum pump (1), a vacuum buffer tank (2), a bag pulse dust collector (3) and a cleaning unit (5), wherein the vacuum pump (1), the vacuum buffer tank (2) and the bag pulse dust collector (3) are arranged in sequence and connected via a negative pressure main pipe (9); the cleaning unit (5) is arranged at the end of the vacuum cleaning system and comprises a plurality of primary cleaning pipe networks (51), wherein the primary cleaning pipe networks (51) are connected to a plurality of secondary cleaning pipe networks (52), wherein the secondary cleaning pipe networks (52) are located at the end of the entire system and connected to a dust suction port; a cyclone separator (7) is connected to the front end of each primary cleaning pipe network (51), and the cyclone separator (7) is connected to the bag pulse dust collector (3) via a confluence pipe (6), and a pneumatic butterfly valve (8) is installed on the confluence pipe (6); It also includes a selection control unit (4) arranged at the front end of the entire cleaning unit (5), each cleaning unit (5) is connected to the selection control unit (4) via a confluence pipe (6), the selection control unit (4) is used to merge the various cleaning units (5) together and control the various cleaning units (5) to operate intermittently in sequence, and a compensation mechanism is provided in the selection control unit (4) to cooperate with it to prevent the vacuum pump (1) from running without load.

2. According to claim 1, a multi-section long-distance centralized vacuum cleaning system for bulk material transfer and loading system is characterized in that: The selective control unit (4) comprises a confluence tank (41), a number of confluence pipe interfaces (42) matching the number of cleaning units (5) being arranged on the outer side of the confluence tank (41), the cleaning units (5) being connected to the confluence pipe interfaces (42) via confluence pipes (6), a constant flow cylinder (43) being rotatably sleeved on the inner bottom of the confluence tank (41), the selective control unit (4) further comprising a driving mechanism for controlling the rotation of the constant flow cylinder (43), a constant flow hole (44) being provided on the side wall of the constant flow cylinder (43), and a constant flow hole (44) being provided on the side wall of the constant flow cylinder (43). When the flow tube (43) rotates, the constant flow hole (44) can be connected to each confluence pipe interface (42) in sequence, and a sealing member is provided on the constant flow tube (43), the sealing member is used to seal the gap between the confluence tank (41) and the constant flow tube (43) and to provide a seal around the constant flow hole (44). When the constant flow hole (44) rotates to a position connected to one of the confluence pipe interfaces (42), except for the confluence pipe interface (42) connected to the constant flow hole (44), the other confluence pipe interfaces (42) are blocked.

3. A multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 2, characterized in that: A casing is fixed to the outer wall of the manifold tank (41), the driving mechanism comprises a motor (411) mounted in the casing, a gear (412) is fixedly mounted on the output end of the motor (411), a gear ring (413) is provided on the outer wall of the stator (43), and the gear (412) meshes with the gear ring (413).

4. A multi-section long-distance centralized vacuum cleaning system for bulk material transfer and loading system according to claim 2, characterized in that: A cone (46) is installed in the manifold tank (41) above the constant flow cylinder (43); the sealing member is a lower sealing airbag (45) arranged on the outer wall of the constant flow cylinder (43) and an upper sealing airbag (47) arranged on the outer wall of the cone (46); the lower sealing airbag (45) and the upper sealing airbag (47) are connected via an air guide tube (410); a two-way air pump (48) is installed on the air guide tube (410); the two-way air pump (410) can control the gas in the lower sealing airbag (45) and the upper sealing airbag (47) to flow to each other, thereby blocking the gap between the constant flow cylinder (43) or the cone (46) and the manifold tank (41).

5. A multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 4, characterized in that: A rotating joint (49) is installed at one end of the bidirectional air pump (48), and the air guide tube on the lower sealing air bag (45) is connected to the bidirectional air pump (48) via the rotating joint (49).

6. A multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 2, characterized in that: The compensation mechanism comprises a compensation tank (414) arranged on the top of the confluence tank (41) and connected thereto, a piston (416) being matched and sleeved in the compensation tank (414), and the piston (416) being installed and connected in the compensation tank (414) via a spring (415), and a breathing hole (417) being provided at the top of the compensation tank (414).

7. The multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 1 is characterized in that: An outlet sealing plate (72) is hingedly connected to the bottom of the outlet of the cyclone separator (7), and the outer end of the outlet sealing plate (72) is connected to the cyclone separator (7) via a tension spring (73). When the system is in a negative pressure state, the outlet sealing plate (72) is sucked by the negative pressure to tightly adhere to the outlet of the cyclone separator (7) to block the outlet. After the system negative pressure state ends, the tension spring (73) pulls the outlet sealing plate (72) to rotate and open. A membrane filter element (71) is installed inside the cyclone separator (7).

8. The multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 1 is characterized in that: The confluence pipe (6) is designed to shorten the cross-sectional area according to the theory of the Venturi pipe.

9. The multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 1 is characterized in that: A ground valve (53) is installed at the end of the secondary cleaning pipe network (52), and the ground valve (53) is installed on the floor of the working area.

10. The multi-section remote centralized vacuum cleaning system for bulk material transfer and loading system according to claim 1, characterized in that: The vacuum pump (1) is a two-stage Roots vacuum pump.

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