Movable vacuum pump capable of rapidly positioning and using method thereof

Abstract

The invention discloses a mobile vacuum pump capable of quickly positioning and a using method thereof, the mobile vacuum pump is provided with a vacuum pump main body and a carrying plate for bearing the vacuum pump main body, and rollers are arranged at four corners of the bottom of the carrying plate; a driving part is arranged between an air inlet pipe and an air outlet pipe of the vacuum pump body and comprises a communicating pipe communicating the air inlet pipe and the air outlet pipe, and the middle of the communicating pipe communicates with a suction pipe with the inner diameter smaller than that of the communicating pipe. Two suction plugs are arranged in the communicating pipe in a sliding mode, a pulling plug is arranged in the suction pipe, a limiting block is arranged at the joint of the communicating pipe and the suction pipe so as to separate the two suction plugs and the pulling plug, and the two suction plugs and the pulling plug can be matched with the communicating pipe and the suction pipe to form a sealed space. The problem that a vacuum pump is rapidly moved or positioned for use in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of vacuum pump technology, specifically to a mobile vacuum pump that can be quickly positioned and its usage method. Background Technology

[0002] Vacuum pumps, as key equipment for creating vacuum environments, are increasingly widely used. In practical applications, due to needs such as process adjustments, equipment layout optimization, and site cleanup, vacuum pumps often need to be relocated within a short period of time to ensure the smooth progress of production or experimental processes.

[0003] To meet this displacement requirement, the industry currently commonly adopts a solution of installing rollers at the bottom of the vacuum pump, along with a corresponding roller locking structure. This traditional solution reduces the frictional resistance between the vacuum pump and the ground through the rollers, allowing operators to more easily push the equipment to adjust its position. The roller locking structure, on the other hand, fixes the rollers after the vacuum pump has completed its displacement and reached the designated working position, preventing accidental movement during operation from affecting working accuracy or even causing safety hazards. Therefore, rollers and roller locking structures have become core auxiliary components for the displacement and positioning of current vacuum pumps.

[0004] In long-term practical application, this traditional solution has gradually revealed obvious technical defects, making it difficult to fully adapt to the usage requirements of vacuum pumps. Specifically, when performing short-term displacement operations on the vacuum pump, operators must first open the roller locking structure to unlock the rollers, and after the equipment moves to the target position, close the locking structure to complete the fixation. This process requires multiple opening and closing operations. This operating mode not only increases the workload of operators, prolongs the displacement operation time, and reduces work efficiency, but more importantly, when the working environment is a confined space, the operator's operating space is severely restricted. It is difficult for the operator's hands to reach the opening and closing parts of the roller locking structure smoothly, and improper operating posture may even lead to misoperation, which not only affects the smooth completion of the displacement operation, but also increases the risk of equipment damage and personnel injury. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of quick movement or positioning of vacuum pumps in the prior art, and to provide a mobile vacuum pump that can be quickly positioned and its usage method.

[0006] To address the shortcomings of the aforementioned technical problems, the present invention adopts the following technical solution: a mobile vacuum pump capable of quick positioning, comprising a vacuum pump body and a carrier plate for supporting the vacuum pump body, with rollers provided at the four corners of the bottom of the carrier plate. A driving component is provided between the air inlet pipe and the air outlet pipe of the vacuum pump body. The driving component includes a connecting pipe that connects the air inlet pipe and the air outlet pipe, and a suction pipe with an inner diameter smaller than the connecting pipe is connected to the middle of the connecting pipe. Two suction plugs are slidably provided inside the connecting tube, and a pull plug is provided inside the suction tube. A limiting block is provided at the junction of the connecting tube and the suction tube to separate the two suction plugs and one pull plug. The two suction plugs and one pull plug can cooperate with the connecting tube and the suction tube to form a sealed space. The bottom of the carrier plate is provided with a locking device, which includes a negative pressure cylinder located at the bottom of the carrier plate, a sliding negative pressure rod inside the negative pressure cylinder, a return spring between the negative pressure rod and the first end of the negative pressure cylinder, and the negative pressure rod extending out from the second end of the negative pressure cylinder and connected to the pull plug by a traction cable. The roller is equipped with a negative pressure nozzle, which is connected to the first end of the negative pressure cylinder through a negative pressure pipe. When air enters and exits through the air inlet and outlet pipes, the two suction plugs will be moved away by the force to cooperate with the sealed space to drive the displacement of the pull plug, thereby driving the negative pressure rod to move inside the negative pressure cylinder, so that the negative pressure nozzle can adsorb the roller to achieve locking.

[0007] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: a pulley is fixedly provided at the end of the negative pressure rod that protrudes from the negative pressure cylinder, and the traction cable passes over the pulley and is fixed at the edge of the carrier plate.

[0008] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: the roller includes a support seat on the carrier plate, a rolling wheel is rotatably mounted on the support seat, the support seat is engaged with the negative pressure nozzle, and the first side of the rolling wheel is correspondingly arranged with the negative pressure nozzle.

[0009] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: scrapers are provided at the edge of the support base corresponding to the negative pressure nozzle, and the edge of the scraper contacts the first side of the rolling wheel so that the scraper cleans the side of the rolling wheel.

[0010] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: limiting rings are provided on the inner walls of both ends of the connecting pipe, and the inner diameter of the limiting rings is smaller than the outer diameter of the suction plug.

[0011] As a further optimization of the mobile vacuum pump capable of quick positioning according to the present invention: an air inlet component is provided on one side of the air inlet pipe, the air inlet component includes an air inlet box communicating with the air inlet pipe, and an air inlet hole is provided on the air inlet box; a sealing plug separating the air inlet pipe and the air inlet hole is slidably provided in the air inlet box, and a pushing column with one end located in the connecting pipe is fixedly provided at one end of the sealing plug facing the air inlet pipe; the pushing column is pushed by the suction plug near the air inlet pipe, so that the air inlet hole communicates with the air inlet pipe, thereby realizing the depressurization of the vacuum pump body.

[0012] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: multiple air inlets are provided, and the multiple air inlets pass through the air inlet box in a direction perpendicular to the sliding trajectory of the sealing plug, and the diameter of the multiple air inlets gradually increases in the direction away from the air inlet pipe.

[0013] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: a blocking ring is fixedly provided on the inner wall of the air inlet box facing the air inlet pipe, and the inner diameter of the blocking ring is smaller than the outer diameter of the sealing plug.

[0014] As a further optimization of the mobile vacuum pump that can be quickly positioned according to the present invention: a top pressure spring is provided between the air inlet box and the sealing plug.

[0015] A method for using a mobile vacuum pump that can be quickly positioned includes the following steps: When it is necessary to position the vacuum pump body, control the airflow to flow rapidly in the inlet and outlet pipes. Then, the two suction plugs will be moved away from each other by force to cooperate with the sealed space to drive the displacement of the pull plug, thereby driving the negative pressure rod to move in the negative pressure cylinder, so that the negative pressure nozzle can generate negative pressure suction rollers to achieve locking. When the load on the vacuum pump body is too high, the suction plug near the inlet pipe will be subjected to greater pressure. At this time, the suction plug pushes the push column, and the push column drives the sealing plug to slide in the inlet box, so that the air inlet hole that was originally separated by the sealing plug is connected to the inlet pipe. Since the diameter of the multiple air inlets gradually increases in the direction away from the inlet pipe, outside air can quickly enter the inlet pipe through the air inlet hole, thereby realizing the rapid depressurization of the vacuum pump body. When it is necessary to move the vacuum pump body, simply control the airflow speed in the inlet and outlet pipes to slow down or stop. At this time, the force between the two suction plugs will decrease, and the return spring will push the negative pressure rod to move in the opposite direction in the negative pressure cylinder. The negative pressure at the negative pressure nozzle will disappear, and the roller will no longer be attracted. Then the vacuum pump body can be easily pushed to the desired position.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a connecting pipe between the inlet and outlet pipes of the vacuum pump body as a channel, and two suction plugs are slidably installed within this connecting pipe. The negative pressure generated by the air intake through the inlet pipe and the negative pressure from the high-speed airflow generated by the air exhaust through the outlet pipe causes the two suction plugs to move away from each other within the connecting pipe. Simultaneously, a suction pipe fixedly connected to the connecting pipe serves as an auxiliary channel, working in conjunction with a pull plug within the suction pipe and the enclosed space formed by the two suction plugs. As the two suction plugs move away from each other, the pull plug is stably displaced upwards within the suction pipe to provide power. The pull plug is fixedly connected to a pull cable that pulls a negative pressure rod. During the pulling process, the negative pressure rod, in conjunction with a negative pressure cylinder and a negative pressure pipe, causes a negative pressure nozzle on a support base to attract and position a rotating roller on the support base. This allows for rapid positioning of the vacuum pump body when it is running and convenient relocation when the vacuum pump body is not running.

[0017] This invention also utilizes an intake box connected to the intake pipe as a support, and a slidable sealing plug within the intake box to separate the intake box and the intake pipe. When the vacuum pump body extracts a large amount of air from the corresponding container and maintains it in a near-vacuum state, the exhaust volume of the exhaust pipe decreases, causing the suction force of the suction plug near the exhaust pipe to weaken. Subsequently, the suction plug near the intake pipe is pulled closer to the intake pipe, maintaining its position while simultaneously pressing against the push column connected to the sealing plug, causing the sealing plug to shift within the intake box. This allows the intake port on the intake box to connect with the intake pipe, reducing the operating pressure of the main power motor of the vacuum pump body and keeping the operation of the vacuum pump body below critical values, facilitating maintenance. When the vacuum pump body is connected to the outside, the exhaust volume of the exhaust pipe increases, and the suction plug near the exhaust pipe is pulled again, causing the suction plug near the intake pipe to reset. Then, the sealing plug is pulled by negative pressure to slide and seal the intake pipe, achieving dynamic balance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the second cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This is a schematic diagram of the third cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the fourth cross-sectional structure of the present invention; Figure 6 This is a schematic diagram of the first axial side structure of the present invention; Figure 7 This is a schematic diagram of the second axial side structure of the present invention; The diagram shows the following components: 1. Vacuum pump body; 2. Pulling frame; 3. Inlet pipe; 4. Inlet component; 401. Inlet box; 402. Inlet port; 403. Top pressure spring; 404. Sealing plug; 405. Pushing column; 406. Blocking ring; 5. Driving component; 501. Connecting pipe; 502. Suction pipe; 503. Pulling plug; 504. Suction plug; 505. Limiting block; 506. Limiting ring; 6. Outlet pipe; 7. Locking component; 701. Guide seat; 702. Pulling cable; 703. Pulley; 704. Negative pressure rod; 705. Negative pressure cylinder; 706. Positioning seat; 707. Negative pressure pipe; 708. Negative pressure nozzle; 709. Return spring; 8. Carrier plate; 9. Roller; 901. Support seat; 902. Rolling wheel; 10. Scraper. Detailed Implementation

[0019] To better understand the present invention, the following embodiments further illustrate the content of the present invention, but the content of the present invention is not limited to the following embodiments.

[0020] like Figure 6 and Figure 7 As shown, a mobile vacuum pump capable of quick positioning has a carrier plate 8 for supporting the vacuum pump body 1. The carrier plate 8 is equipped with rollers 9 at each of its four bottom corners, facilitating the movement of the vacuum pump body 1 by operators. The carrier plate 8 is equipped with locking components 7 that lock the four rollers 9. The locking components 7 are controlled by a drive component 5 that drives the vacuum pump body 1, ensuring that the rollers 9 are locked and their relative positions are maintained when the vacuum pump body 1 is running; and that the rollers 9 are unlocked when the vacuum pump body 1 stops, facilitating relocation by operators.

[0021] In addition, a traction frame 2 is hinged to the carrier plate 8 to assist the operator in moving the carrier plate 8 on the vacuum pump body 1 with the help of four rollers 9.

[0022] like Figure 1 and Figure 2 As shown, the driving component 5 includes a connecting pipe 501 that connects the inlet pipe 3 and the outlet pipe 6 of the vacuum pump body 1, and two suction plugs 504 that are slidably disposed within the connecting pipe 501. A limiting block 505 is fixedly provided at the center of the connecting pipe 501 to limit the two suction plugs 504 from blocking both ends of the connecting pipe 501, thus maintaining the independence of the inlet pipe 3 and the outlet pipe 6. A vertical suction pipe 502 is also fixedly provided at the center of the connecting pipe 501, corresponding to the limiting block 505, and a pull plug 503 that controls the start and stop of the locking component 7 is slidably disposed within the suction pipe 502. A sealed space is formed between the two suction plugs 504 and the pull plug 503. Its working principle is based on the synergistic effect of fluid mechanics and pressure difference: when the suction pump is running, a negative pressure is generated in the air inlet pipe 3, and a low-pressure area is formed in the exhaust pipe due to the high-speed discharge of gas. The suction plug 504 corresponding to the air inlet pipe 3 is displaced inward under the action of the internal and external pressure difference, while the suction plug 504 in the exhaust pipe is displaced outward under the low-pressure traction of the high-speed airflow. The dual displacement expands the volume of the sealed space to form a negative pressure field, which in turn drives the pull plug 503 to move upward through the air pressure difference.

[0023] Specifically, the inner diameter of the connecting pipe 501 is larger than the inner diameter of the suction pipe 502. This difference in cross-sectional area creates a pressure amplification effect: when each of the two suction plugs 504 travels a quarter stroke within the connecting pipe 501, the pressure change within the sealed space drives the pull plug 503 to complete its full stroke within the suction pipe 502, reaching the end near the connecting pipe 501. Limiting rings 506 are fixed at both ends of the connecting pipe 501. The inner diameter of the limiting rings 506 is smaller than the outer diameter of the suction plugs 504, preventing excessive displacement of the suction plugs 504 that could block the inlet pipe 3 or outlet pipe 6. This ensures that the inlet pipe 3 and outlet pipe 6 operate independently, maintaining the vacuum pump body 1's vacuuming function.

[0024] like Figure 5As shown, the locking component 7 includes a pull cable 702 fixed together with the pull plug 503. The other end of the pull cable 702 is connected to a negative pressure rod 704. The negative pressure rod 704 is slidably disposed in a negative pressure cylinder 705 fixed to the bottom surface of the carrier plate 8 by a positioning seat 706, and a return spring 709 is provided between the rod and the negative pressure cylinder 705 so as to drive each component to reset after the vacuum pump body 1 stops rotating.

[0025] like Figure 4 As shown, the suction end of the negative pressure cylinder 705 is connected to the negative pressure nozzle 708 via the negative pressure pipe 707. The negative pressure nozzle 708 is mounted on the support base 901. When the vacuum pump body 1 is running, a negative pressure environment lower than atmospheric pressure is formed inside the negative pressure cylinder 705. This negative pressure is transmitted to the negative pressure nozzle 708 through the negative pressure pipe 707, creating a pressure difference between the negative pressure nozzle 708 and the surface of the rolling wheel 902. Atmospheric pressure is used to press the rolling wheel 902 firmly onto the support base 901, converting rolling friction into static friction for positioning. When the pull plug 503 moves to the end of the suction pipe 502, the negative pressure rod 704 overcomes the preload of the return spring 709 and displaces. This creates a stable negative pressure field inside the negative pressure nozzle 708 through the negative pressure pipe 707, ensuring that the suction force is sufficient to resist equipment vibration. The negative pressure nozzles 708 are engaged on the side of each of the four support bases 901 facing the center of the carrier plate 8. A four-point synchronous braking scheme is adopted to prevent the carrier plate 8 from tilting through the balanced distribution of forces, thus achieving horizontal positioning of the vacuum pump body 1. Meanwhile, the adsorption energy of the negative pressure nozzle 708 causes the rolling wheel 902 to roll within a certain range, thereby eliminating the vibration of the vacuum pump body 1 to a certain extent. When the use ends, the negative pressure in the air inlet pipe 3 disappears, the return spring 709 pushes the negative pressure rod 704 to reset, and normal pressure air is injected into the negative pressure nozzle 708 through the negative pressure pipe 707, which destroys the adsorption sealing surface, makes the friction disappear, and returns to the rolling friction state for easy relocation.

[0026] A pulley 703 is provided at the end of the negative pressure rod 704 that protrudes from the negative pressure cylinder 705, so that the pull cable 702 stably pulls the negative pressure rod 704 to move within the negative pressure cylinder 705, ensuring that the negative pressure nozzle 708 is positioned on the side of the adsorption roller 902. A scraper 10 is provided on one side edge of the support base 901 corresponding to the negative pressure nozzle 708 to maintain the stability of the adsorption and positioning of the negative pressure nozzle 708. In addition, a guide seat 701 fixed to the vacuum pump body 1 is provided on the pull cable 702 to assist in guiding and maintaining the stability of the displacement of the pull cable 702.

[0027] like Figure 6 and Figure 7As shown, an air inlet 4 is provided at the end of the air inlet pipe 3 away from the connecting pipe 501. The air inlet 4 can achieve negative pressure overload protection to a certain extent. Before the negative pressure suction of the vacuum pump body 1 reaches the critical value, the air supply channel is automatically opened. By introducing outside air, the load on the pump chamber and the motor of the vacuum pump body 1 is reduced, which not only alleviates the mechanical wear caused by long-term operation under critical conditions, but also reduces the motor pressure of the vacuum pump body 1. The air inlet 4 includes an air inlet box 401 connected to the air inlet pipe 3. A sealing plug 404 is slidably provided inside the box, and a push column 405 is fixed on the sealing plug 404. It operates based on differential pressure feedback regulation, specifically as follows: When the vacuum pump body 1 extracts most of the air from the container, the exhaust flow of the outlet pipe 6 decreases, which weakens the airflow thrust on the suction plug 504 near the outlet pipe 6. The air pressure in the closed space rises, and the suction plug 504 near the inlet pipe 3 expands its displacement stroke under the action of a greater differential pressure. By pushing the sealing plug 404 with the push column 405, the air inlet 402 is connected to the air inlet pipe 3, and outside air is introduced to maintain the operation of the vacuum pump body 1 in a safe working range.

[0028] When outside air enters, the Venturi effect increases the airflow velocity in the outlet pipe 6, enhancing the traction force on the suction plug 504 in the outlet pipe 6. This pulls the suction plug 504 back to its original position, reducing the volume of the sealed space. Simultaneously, the negative pressure rise in the inlet pipe 3 drives the sealing plug 404 to reset, forming a closed-loop regulation from air replenishment to flow restriction, flow restriction, and then reset. This achieves a dynamic balance between the air intake volume and the vacuum level, while also providing automatic pressure relief protection and energy-saving effects. The inner wall of the air intake box 401 is equipped with a baffle ring 406, the end face of which is sealed with nitrile rubber to prevent the sealing plug 404 from excessively displacing and entering the air intake pipe 3, causing airway blockage, and maintaining its precise sliding function within a certain range. The air intake component 4 adopts a dual-path parallel design; specifically, two air intake components 4 are symmetrically distributed on the air intake pipe 3. The dual-path coordination ensures that the air replenishment efficiency meets the motor's voltage reduction requirements. A top pressure spring 403 is provided between the sealing plug 404 and the inner wall of the air inlet box 401. Its preload is set to the corresponding thrust value, which not only ensures the sealing reliability under low pressure difference, but also enables rapid response displacement under overpressure, thereby improving the stability and reaction speed of dynamic balance.

[0029] The air inlet 402 extends through the air inlet box 401 along a direction perpendicular to the sliding trajectory of the sealing plug 404. Multiple air inlets 402 are provided, and the diameter of the multiple air inlets 402 gradually increases from the air inlet end. When the sealing plug 404 is displaced, the ventilation cross-sectional area changes accordingly, realizing linear adjustment of the air intake volume and negative pressure level, quickly reducing the vacuum pump from the critical value condition to the safe load range, and reducing the motor output power by reducing the gas compression ratio.

[0030] In this embodiment, the operation of the vacuum pump body 1, the model of the vacuum pump body 1, and the connection between the vacuum pump inlet pipe 3 and outlet pipe 6 and the corresponding pipelines should all be understood as prior art. Furthermore, the materials of the sealing plug 404, the pulling plug 503, and the suction plug 504, and how sealing is achieved, should also be understood as prior art.

[0031] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A mobile vacuum pump capable of rapid positioning, characterized in that: It has a vacuum pump body (1) and a carrier plate (8) for supporting the vacuum pump body (1), and rollers (9) are provided at the four corners of the bottom of the carrier plate (8). A drive unit (5) is provided between the air inlet pipe (3) and the air outlet pipe (6) of the vacuum pump body (1). The drive unit (5) includes a connecting pipe (501) that connects the air inlet pipe (3) and the air outlet pipe (6). A suction pipe (502) with an inner diameter smaller than the connecting pipe (501) is connected to the middle of the connecting pipe (501). Two suction plugs (504) are slidably provided inside the connecting tube (501), and a pull plug (503) is provided inside the suction tube (502). A limiting block (505) is provided at the junction of the connecting tube (501) and the suction tube (502) to separate the two suction plugs (504) and one pull plug (503). The two suction plugs (504) and one pull plug (503) can cooperate with the connecting tube (501) and the suction tube (502) to form a sealed space. The bottom of the carrier plate (8) is provided with a locking component (7), which includes a negative pressure cylinder (705) located at the bottom of the carrier plate (8), a sliding negative pressure rod (704) inside the negative pressure cylinder (705), a return spring (709) between the negative pressure rod (704) and the first end of the negative pressure cylinder (705), and the negative pressure rod (704) extending from the second end of the negative pressure cylinder (705) and connected to the pull plug (503) through the pull cable (702); The roller (9) is provided with a negative pressure nozzle (708). The negative pressure nozzle (708) is connected to the first end of the negative pressure cylinder (705) through a negative pressure pipe (707). When the air inlet pipe (3) and the air outlet pipe (6) are inlet and outlet, the two suction plugs (504) will be moved away from each other to cooperate with the sealed space to drive the pull plug (503) to move, thereby driving the negative pressure rod (704) to move inside the negative pressure cylinder (705) so that the negative pressure nozzle (708) can adsorb the roller (9) to achieve locking.

2. The mobile vacuum pump capable of rapid positioning as described in claim 1, characterized in that: The end of the negative pressure rod (704) that protrudes from the negative pressure cylinder (705) is fixed with a pulley (703), and the traction cable (702) passes over the pulley (703) and is fixed at the edge of the transport plate (8).

3. The mobile vacuum pump capable of rapid positioning as described in claim 1, characterized in that: The roller (9) includes a support base (901) on the carrier plate (8), a roller (902) is rotatably mounted on the support base (901), the support base (901) is engaged with the negative pressure nozzle (708), and the first side of the roller (902) is correspondingly arranged with the negative pressure nozzle (708).

4. The mobile vacuum pump capable of rapid positioning as described in claim 3, characterized in that: Each support base (901) is provided with a scraper (10) at the edge of one side of the negative pressure nozzle (708), and the edge of the scraper (10) contacts the first side of the roller (902) so that the scraper (10) cleans the side of the roller (902).

5. A mobile vacuum pump capable of rapid positioning as described in claim 1, characterized in that: The connecting pipe (501) has a limiting ring (506) on the inner wall of both ends. The inner diameter of the limiting ring (506) is smaller than the outer diameter of the suction plug (504).

6. The mobile vacuum pump capable of rapid positioning as described in claim 1, characterized in that: An air intake component (4) is provided on one side of the air intake pipe (3). The air intake component (4) includes an air intake box (401) that communicates with the air intake pipe (3). An air intake hole (402) is provided on the air intake box (401). A sealing plug (404) that separates the air intake pipe (3) and the air intake hole (402) is slidably provided in the air intake box (401). A pusher (405) with one end located in the connecting pipe (501) is fixedly provided at one end of the sealing plug (404) facing the air intake pipe (3). The pusher (405) is pushed by the suction plug (504) near the air intake pipe (3) to make the air intake hole (402) communicate with the air intake pipe (3) so as to realize the depressurization of the vacuum pump body (1).

7. A mobile vacuum pump capable of rapid positioning as described in claim 6, characterized in that: The air inlet (402) has multiple openings, and the multiple air inlets (402) pass through the air inlet box (401) in a direction perpendicular to the sliding trajectory of the sealing plug (404), and the diameter of the multiple air inlets (402) gradually increases in the direction away from the air inlet pipe (3).

8. A mobile vacuum pump capable of rapid positioning as described in claim 6, characterized in that: The air intake box (401) is fixedly provided with a blocking ring (406) on the inner wall facing the air intake pipe (3). The inner diameter of the blocking ring (406) is smaller than the outer diameter of the sealing plug (404).

9. A mobile vacuum pump capable of rapid positioning as described in claim 6, characterized in that: A top pressure spring (403) is provided between the air intake box (401) and the sealing plug (404).

10. A method for using a mobile vacuum pump capable of rapid positioning, characterized in that: Includes the following steps: When it is necessary to position the vacuum pump body (1), the airflow is controlled to flow rapidly in the inlet pipe (3) and outlet pipe (6). Then the two suction plugs (504) will be moved away from each other to cooperate with the sealed space to drive the pull plug (503) to move, thereby driving the negative pressure rod (704) to move in the negative pressure cylinder (705), so that the negative pressure nozzle (708) can generate negative pressure to absorb the roller (9) to achieve locking. When the load on the vacuum pump body (1) is too high, the suction plug (504) near the inlet pipe (3) will be subjected to greater pressure. At this time, the suction plug (504) pushes the push column (405), and the push column (405) drives the sealing plug (404) to slide in the inlet box (401), so that the air inlet hole (402) originally separated by the sealing plug (404) is connected to the inlet pipe (3). Since the aperture of the multiple air inlets (402) gradually expands in the direction away from the inlet pipe (3), the outside air can quickly enter the inlet pipe (3) through the air inlet hole (402), thereby realizing the rapid depressurization of the vacuum pump body (1). When it is necessary to move the vacuum pump body (1), simply control the flow speed of the airflow in the inlet pipe (3) and outlet pipe (6) to slow down or stop. At this time, the force between the two suction plugs (504) decreases, the return spring (709) will push the negative pressure rod (704) to move in the opposite direction in the negative pressure cylinder (705), the negative pressure at the negative pressure nozzle (708) disappears, the roller (9) is no longer attracted, and the vacuum pump body (1) can be easily pushed to the desired position.

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