A self-collecting high negative pressure vacuum cleaner for car washing

Abstract

The present invention discloses a self-collecting high-negative-pressure vacuum cleaner for car washing, which belongs to the technical field of high-negative-pressure vacuum cleaners. The present invention includes a casing, a control panel is fixedly installed on the outside of the casing, and a protective cover is fixedly connected to the inside of the casing, and a filter plate is installed at the bottom of the protective cover; and further includes: the lower end of the filter plate is mutually connected with the lower end of the protective cover through an auxiliary spring, and the auxiliary spring is located on the inner side of a supporting column, and the supporting column is fixed on the protective cover, and an opening is opened on the side of the protective cover, and a protective window is installed inside the opening, and a switching centralization component is installed on the filter plate. The self-collecting high-negative-pressure vacuum cleaner for car washing can separate the filter cartridge into a working area and a waiting area, and the working efficiency of the vacuum cleaner can be improved by switching the working state of the filter screen in the working area and the waiting area, and at the same time, it can facilitate the impurities attached to the filter screen to be concentrated in a fixed position, so that the subsequent staff can handle the dust.

Description

Technical Field

[0001] The invention relates to the technical field of high negative pressure vacuum cleaners, in particular to a self-collecting high negative pressure vacuum cleaner for car washing. Background Art

[0002] With the deepening of ultra-low emission transformation, road pollution and dust problems have been listed as key control projects. Materials on transport vehicles at the entrances and exits of large material yards, docks and other material yards are carried along by wheels and bodies, causing road environmental pollution. Therefore, the vehicles need to be cleaned. In order to avoid the escape of dust during the cleaning process, most of them will use high-negative pressure vacuum cleaners to absorb dust in the air during cleaning.

[0003] For example, the announcement date is: 2020-12-29, the name is: A dust-collecting negative pressure vacuum cleaner, the utility model patent with announcement number CN212238559U, including a shell, the top of the shell is connected to one end of the ventilation pipe, and the same rectangular shell is fixedly connected to the inner walls on both sides of the shell, and both sides of the rectangular shell are fixedly connected to one side of the inclined plate, and one side of the two inclined plates are respectively fixedly connected to the other two side inner walls of the shell, and by arranging a first filter plate, a second filter plate and a cleaning rod, the negative pressure vacuum cleaner can clean the dust on the filter by itself when used for a long time in a dusty environment, and the filter will not be blocked.

[0004] The above-mentioned prior art has the following technical problems: the existing negative pressure vacuum cleaner filters the dust in the air by arranging a filter cartridge inside. In order to prevent the filter cartridge from being blocked, a corresponding cleaning structure is arranged on the filter cartridge. Although the cleaning structure can scrape the dust attached to the filter cartridge, the dust is still scattered on the filter screen when the vacuum cleaner is working, which is not convenient for concentrating the dust in a fixed position, thereby increasing the difficulty of subsequent dust cleaning. At the same time, when the vacuum cleaner is working, only a single filter screen is arranged inside the vacuum cleaner, and the entire interior of the vacuum cleaner is a working area. When the filter screen inside the working area is blocked, it needs to be cleaned before subsequent dust filtering can be carried out, thereby reducing the working efficiency of the vacuum cleaner.

[0005] Therefore, we propose a self-collecting high-negative-pressure vacuum cleaner for car washing to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a self-collecting high-negative pressure vacuum cleaner for car washing, so as to solve the problem raised in the above background technology that the existing negative pressure vacuum cleaners on the market filter dust in the air by arranging a filter cartridge inside, and a corresponding cleaning structure is arranged on the filter cartridge to prevent the filter cartridge from being blocked. Although the cleaning structure can scrape off the dust attached to the filter cartridge, the dust still remains inside the filter cartridge when the vacuum cleaner is working, thereby affecting the subsequent filtering effect. At the same time, when the filter cartridge inside the vacuum cleaner needs to be manually cleaned, it can only be done during the idle period when the vacuum cleaner does not need to work. The internal filter cartridge cannot be operated when the vacuum cleaner is working, thereby reducing the working efficiency of the vacuum cleaner.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-collecting high-negative-pressure vacuum cleaner for a car wash, comprising a casing, a control panel is fixedly mounted on the outer side of the casing, a protective cover is fixedly connected to the inside of the casing, a filter plate is mounted on the bottom of the protective cover, an air inlet pipe is fixedly connected to the upper end of the casing, and an air outlet is opened on the lower side of the casing, a double-shaft motor is mounted inside the casing, and the double-shaft motor is fixed to the inside of the casing through a support plate, and a negative-pressure fan is fixedly connected to the upper output shaft of the double-shaft motor;

[0008] Also includes:

[0009] The lower end of the filter disc is connected to the lower end of the protective cover through an auxiliary spring, and the auxiliary spring is located on the inner side of the supporting column, and the supporting column is fixed on the protective cover, the side of the protective cover is provided with an opening, and the interior of the opening is provided with a protective window, a switching central component is installed on the filter disc, and the switching central component is used to switch the working state of the filter disc and to centrally process the dust attached to the filter disc, a driving component for controlling the switching central component is installed on the lower end output shaft of the dual-axis motor, an adjusting component is installed on the side of the switching central component, and the adjusting component is used to vibrate and clean the filter disc in the working area.

[0010] Preferably, the filter plate is composed of a No. 1 filter cover and a No. 2 filter cover, and the No. 1 filter cover and the No. 2 filter cover form a truncated cone structure, and the No. 1 filter cover and the No. 2 filter cover are connected to each other through an auxiliary spring and the lower end of the protective cover, and the lower ends of the No. 1 filter cover and the No. 2 filter cover are in contact with the upper end of the supporting column in an initial state.

[0011] By adopting the above technical solution, the auxiliary spring can be set to reset and rebound the No. 1 filter cover and the No. 2 filter cover after they are moved.

[0012] Preferably, the switching concentration component includes a fixed block, and the upper end of the fixed block is fixed on the output end of the servo motor, a moving block is provided at the lower end of the fixed block, and a rubber block is fixedly connected between the fixed block and the moving block, the moving blocks are connected to each other through built-in springs and the fixed blocks, and a magnet is fixedly connected to the upper end of the moving block, an electromagnet is provided above the magnet, and the electromagnet is installed on the fixed block, an electric telescopic rod is fixedly connected to the inner side of the moving block, and an insert block is installed at the telescopic end of the electric telescopic rod.

[0013] By adopting the above technical solution and setting the electromagnet, a magnetic attraction force can be generated on the magnet on the moving block when power is turned on.

[0014] Preferably, the rubber block between the fixed block and the movable block is configured as a hollow structure, and the movable block forms an elastic telescopic structure through a built-in spring and the fixed block.

[0015] By adopting the above technical solution, when the moving block moves on the fixed block, the moving block can squeeze the rubber block.

[0016] Preferably, the magnet at the upper end of the movable block and the electromagnet on the fixed block are located on the same vertical line, and the outer wall of the plug block at the end of the electric telescopic rod inside the movable block fits with the inner wall of the filter hole on the No. 1 filter cover and the No. 2 filter cover.

[0017] By adopting the above technical solution, after the electric telescopic rod is extended, the plug block at the end can be inserted into the inside of the filter hole, thereby completing the fixation of the moving block and the filter disc.

[0018] Preferably, the driving component includes a reducer, and the reducer is used to connect the lower output shaft of the servo motor and the reciprocating screw, the reciprocating screw is connected with a pressure block, and the pressure block is installed on the support plate, the end of the pressure block away from the reciprocating screw is located between the support plate and the cross plate, and the cross plate is fixed to the inside of the casing, a start button is fixedly connected to the cross plate, and a close button is fixedly connected to the support plate, the start button and the close button are used to control the power on and off of the electromagnet.

[0019] By adopting the above technical solution, the pressing block can be reciprocated up and down by rotating the reciprocating screw.

[0020] Preferably, the reciprocating screw and the lower end of the pressing block are threadedly connected, and the pressing block can slide on the support plate.

[0021] By adopting the above technical solution, the pressing block can be prevented from rotating synchronously with the reciprocating screw rod by sliding the pressing block on the support plate.

[0022] Preferably, the adjusting component includes an air pipe, and the air pipe is used to connect the rubber block and the sleeve ring. A center rod is fixedly connected to the middle of the sleeve ring, and a striking rod is installed through the center rod. The striking rod is connected to the inside of the center rod through a return spring.

[0023] By adopting the above technical solution, the setting of the return spring can make the striking rod return to its original position after moving on the center rod.

[0024] Preferably, the sleeve ring and the interior of the center rod are interconnected, and the lower end of the striking rod fits against the surface of the filter disc in the initial state, and the upper end of the striking rod forms a seamless sliding connection structure with the center rod through a circumferentially fixed sealing ring.

[0025] By adopting the above technical solution, when airflow enters the interior of the sleeve ring, the airflow can enter the interior of the center rod and push the striking rod to move.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the self-collecting high-negative-pressure vacuum cleaner for car washing can separate the filter cartridge into a working area and a waiting area, and the working efficiency of the vacuum cleaner can be improved by switching the working state of the filter screen in the working area and the waiting area, and at the same time, the impurities attached to the filter screen can be conveniently concentrated in a fixed position, so that the subsequent staff can handle the dust;

[0027] 1. A moving block is provided, and the fixed block and the moving block can be controlled to rotate by a servo motor. The first filter cover or the second filter cover can be shielded by the rotation of the moving block and the fixed block, so that the filter disc can form a working area and a waiting area, so that when the filter cover inside the waiting area is cleaned, the normal operation of the other filter cover will not be affected, and the working efficiency of the vacuum cleaner is effectively improved;

[0028] 2. An electromagnet is provided. By squeezing the start button and the close button by the pressing block, the electromagnet can be powered on and off. The magnetic force of the electromagnet can be used to make the moving block drive the filter cover in the waiting area to move up and down. The filter cover in the waiting area collides with the support during the up and down movement, so that the impurities on the surface of the filter cover can be shaken off to the bottom along the inclined surface, thereby facilitating the subsequent centralized cleaning of the impurities on the filter cover;

[0029] 3. A striking rod is provided. When the moving block moves back and forth, it can squeeze the rubber block. The air outlet and air intake of the rubber block can make the striking rod move back and forth under the action of the return spring. The reciprocating movement of the striking rod can knock on the filter cover in the working area. The knocking and vibration of the filter cover in the working area can reduce the possibility of clogging of the filter holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0031] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0032] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0033] Figure 4 It is a schematic diagram of the structure of the No. 1 filter cover and the No. 2 filter cover of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the moving block and the rubber block of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the moving block and the electric telescopic rod of the present invention;

[0036] Figure 7 It is a schematic diagram of the cross-sectional structure of the sleeve ring and the center rod of the present invention;

[0037] Figure 8 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0038] Fig. 9 This is a schematic diagram of the start button and the close button structure of the present invention.

[0039] In the figure: 1, housing; 2, control panel; 3, protective cover; 4, filter plate; 41, filter cover No. 1; 42, filter cover No. 2; 5, air inlet pipe; 6, air outlet; 7, dual-axis motor; 8, support plate; 9, negative pressure fan; 10, auxiliary spring; 11, supporting column; 12, opening; 13, protective window; 14, switching centralized component; 141, fixed block; 142, servo motor; 143, moving block; 144 , rubber block; 145, built-in spring; 146, magnet; 147, electromagnet; 148, electric telescopic rod; 15, driving component; 151, reducer; 152, reciprocating screw; 153, pressure block; 154, cross plate; 155, start button; 156, close button; 16, adjustment component; 161, air pipe; 162, sleeve ring; 163, center rod; 164, striking rod; 165, reset spring. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figure 1-Figure 9 When the vacuum cleaner is working, only a single filter is arranged inside the vacuum cleaner, and the whole inside of the vacuum cleaner is the working area. When the filter inside the working area is clogged, it needs to be cleaned before subsequent dust filtering can be performed, thereby reducing the working efficiency of the vacuum cleaner. In order to solve this technical problem, this embodiment discloses the following technical contents;

[0042] A self-collecting high-negative-pressure vacuum cleaner for a car wash comprises a casing 1, a control panel 2 is fixedly mounted on the outer side of the casing 1, a protective cover 3 is fixedly connected to the inside of the casing 1, a filter plate 4 is mounted on the bottom of the protective cover 3, an air inlet pipe 5 is fixedly connected to the upper end of the casing 1, and an air outlet 6 is opened on the lower side of the casing 1, a double-shaft motor 7 is mounted inside the casing 1, and the double-shaft motor 7 is fixed to the inside of the casing 1 through a support plate 8, and a negative-pressure fan 9 is fixedly connected to the upper output shaft of the double-shaft motor 7;

[0043] The lower end of the filter disc 4 is connected to the lower end of the protective cover 3 through an auxiliary spring 10, and the auxiliary spring 10 is located on the inner side of the supporting column 11, and the supporting column 11 is fixed on the protective cover 3. An opening 12 is provided on the side of the protective cover 3, and a protective window 13 is installed inside the opening 12. A switching central component 14 is installed on the filter disc 4, and the switching central component 14 is used to switch the working state of the filter disc 4. The filter disc 4 is composed of a No. 1 filter cover 41 and a No. 2 filter cover 42, and the No. 1 filter cover 41 and the No. 2 filter cover 42 form a truncated cone structure, and the No. 1 filter cover 41 and the No. 2 filter cover 42 are connected to each other through the auxiliary spring 10 and the lower end of the protective cover 3, and the lower ends of the No. 1 filter cover 41 and the No. 2 filter cover 42 are in contact with the upper end of the supporting column 11 in the initial state.

[0044] The switching centralized component 14 includes a fixed block 141, and the upper end of the fixed block 141 is fixed to the output end of the servo motor 142, a moving block 143 is arranged at the lower end of the fixed block 141, and a rubber block 144 is fixedly connected between the fixed block 141 and the moving block 143, the moving block 143 is mutually connected to the fixed block 141 through an internal spring 145, and a magnet 146 is fixedly connected to the upper end of the moving block 143, an electromagnet 147 is arranged above the magnet 146, and the electromagnet 147 is installed on the fixed block 141, an electric telescopic rod 148 is fixedly connected to the inner side of the moving block 143, and an insert block is installed at the telescopic end of the electric telescopic rod 148. The rubber block 144 between the fixed block 141 and the moving block 143 is set as a hollow structure, and the moving block 143 forms an elastic telescopic structure through the internal spring 145 and the fixed block 141. The magnet 146 at the upper end of the movable block 143 and the electromagnet 147 on the fixed block 141 are located on the same vertical straight line, and the outer wall of the plug at the end of the electric telescopic rod 148 inside the movable block 143 fits with the inner wall of the filter hole on the No. 1 filter cover 41 and the No. 2 filter cover 42.

[0045] When a large amount of dust appears during the vehicle cleaning process, the servo motor 142 is turned on. After the servo motor 142 is turned on, the fixed block 141 and the moving block 143 can be rotated, so that the moving block 143 is rotated to the top of the No. 1 filter cover 41 or the No. 2 filter cover 42, and the No. 1 filter cover 41 or the No. 2 filter cover 42 is blocked by the moving block 143. Thus, the moving block 143 can divide the filter disc 4 into half as a working area and half as a waiting area, and then the dual-axis motor 7 is turned on. The turning on of the dual-axis motor 7 can make the negative pressure fan 9 rotate, and the rotation of the negative pressure fan 9 can use the intake pipe 5 to absorb the outside air, and the air enters the interior of the casing 1. After that, the dust in the air is filtered out by the filter cover in the working area, and the filtered air is discharged outward through the air outlet 6 on the side of the lower end of the casing 1. After cleaning one car, when it is necessary to clean the next car, the servo motor 142 is turned on. After the servo motor 142 is turned on, the fixed block 141 and the moving block 143 can be rotated, so that the moving block 143 is rotated to the top of the filter cover in the working area during the last car washing process, so that the moving block 143 is used to block and clean the filter cover in the previous working area, and the filter cover in the previous waiting area can work normally again. This reciprocating cycle can effectively improve the working efficiency of the vacuum cleaner.

[0046] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above-mentioned embodiment 1. The existing negative pressure vacuum cleaner filters the dust in the air by arranging a filter cartridge inside. In order to prevent the filter cartridge from being blocked, a corresponding cleaning structure is arranged on the filter cartridge. Although the cleaning structure can scrape the dust attached to the filter cartridge, the dust is still scattered on the filter screen when the vacuum cleaner is working, which is not convenient for concentrating the dust in a fixed position, thereby increasing the difficulty of subsequent dust cleaning. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 1-Figure 9 As shown;

[0047] The lower output shaft of the dual-axis motor 7 is equipped with a driving component 15 for controlling the switching centralized component 14. The side of the switching centralized component 14 is equipped with an adjusting component 16, and the adjusting component 16 is used to vibrate and clean the filter disc 4 in the working area. The driving component 15 includes a reducer 151, and the reducer 151 is used to connect the lower output shaft of the servo motor 142 and the reciprocating screw 152. The reciprocating screw 152 is connected with a pressing block 153, and the pressing block 153 is installed on the support plate 8. The end of the pressing block 153 away from the reciprocating screw 152 is located between the support plate 8 and the horizontal plate 154, and the horizontal plate 154 is fixed inside the housing 1. A start button 155 is fixedly connected to the horizontal plate 154, and a close button 156 is fixedly connected to the support plate 8. The start button 155 and the close button 156 are used to control the power on and off of the electromagnet 147. The lower ends of the reciprocating screw rod 152 and the pressing block 153 are threadedly connected, and the pressing block 153 can slide on the support plate 8. The adjusting component 16 includes an air delivery pipe 161, and the air delivery pipe 161 is used to connect the rubber block 144 and the sleeve ring 162. The middle of the sleeve ring 162 is fixedly connected with a center rod 163, and a striking rod 164 is installed on the center rod 163, and the striking rod 164 is connected to the inside of the center rod 163 through a return spring 165. The insides of the sleeve ring 162 and the center rod 163 are interconnected, and the lower end of the striking rod 164 is in contact with the surface of the filter disc 4 in the initial state, and the upper end of the striking rod 164 forms a seamless sliding connection structure with the center rod 163 through a circumferentially fixed sealing ring.

[0048] When the moving block 143 blocks the No. 1 filter cover 41 or the No. 2 filter cover 42, the electric telescopic rod 148 is turned on. The opening of the electric telescopic rod 148 can make the plug at the end insert into the filter hole on the blocked filter cover, thereby completing the fixing of the moving block 143 and the blocked filter cover. After the double-axis motor 7 is turned on, the reciprocating screw rod 152 is rotated through the deceleration of the reducer 151. After the reciprocating screw rod 152 rotates, the threaded pressing block 153 can be reciprocated up and down. The reciprocating movement of the pressing block 153 can The start button 155 and the close button 156 on the horizontal plate 154 are squeezed, and the start button 155 controls the electromagnet 147 to be energized and the close button 156 controls the electromagnet 147 to be de-energized. When the electromagnet 147 is energized, it can generate a magnetic attraction to the magnet 146 on the moving block 143. At this time, the moving block 143 will drive the filter cover in the waiting area to move up synchronously. When the electromagnet 147 is de-energized, the moving block 143 and the filter cover in the waiting area can be reset and rebounded under the action of the built-in spring 145, and the lower filter cover 41 and the second filter cover 42 are The first filter cover 41 or the second filter cover 42 reciprocates up and down to collide with the support column 11 to generate vibration, so that the impurities attached to the filter cover in the waiting area can be shaken off to the bottom along the inclined surface, which is convenient for subsequent centralized cleaning. At the same time, after the dust in the waiting area is cleaned, it can be convenient to switch to the working area to continue the filtering operation when the next car is washed. When the moving block 143 reciprocates up and down, it can intermittently squeeze the rubber block 144. After the rubber block 144 is squeezed, The airflow enters the interior of the sleeve ring 162 through the air supply pipe 161. When the airflow inside the sleeve ring 162 increases, it can push the striking rod 164 inside the center rod 163 to move in the direction of the filter cover away from the working area. When the rubber block 144 recovers, the striking rod 164 in the center rod 163 also returns to its original position under the action of the return spring 165. The reciprocating striking rod 164 can knock on the filter cover in the working area. The vibration generated by knocking on the filter cover in the working area can reduce the possibility of clogging of the filter cover in the working area during vacuuming.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-collecting high-negative-pressure vacuum cleaner for a car wash, comprising a casing (1), a control panel (2) being fixedly mounted on the outer side of the casing (1), a protective cover (3) being fixedly connected to the inside of the casing (1), a filter plate (4) being mounted on the bottom of the protective cover (3), an air inlet pipe (5) being fixedly connected to the upper end of the casing (1), and an air outlet (6) being provided on the side of the lower end of the casing (1), a double-shaft motor (7) being mounted inside the casing (1), and the double-shaft motor (7) being fixed to the inside of the casing (1) via a support plate (8), and a negative-pressure fan (9) being fixedly connected to the upper output shaft of the double-shaft motor (7); It is characterized in that Also includes: The lower end of the filter disc (4) is connected to the lower end of the protective cover (3) through an auxiliary spring (10), and the auxiliary spring (10) is located on the inner side of the supporting column (11), and the supporting column (11) is fixed on the protective cover (3). The side of the protective cover (3) is provided with an opening (12), and the interior of the opening (12) is provided with a protective window (13). The filter disc (4) is provided with a switching central component (14), and the switching central component (14) is used to switch the working state of the filter disc (4) and to centrally process the dust attached to the filter disc (4). The lower end output shaft of the dual-axis motor (7) is provided with a driving component (15) for controlling the switching central component (14). The side of the switching central component (14) is provided with an adjusting component (16), and the adjusting component (16) is used to vibrate and clean the filter disc (4) in the working area. The filter disc (4) is composed of a No. 1 filter cover (41) and a No. 2 filter cover (42), and the No. 1 filter cover (41) and the No. 2 filter cover (42) form a truncated cone structure, and the No. 1 filter cover (41) and the No. 2 filter cover (42) are connected to each other through an auxiliary spring (10) and the lower end of the protective cover (3), and the lower ends of the No. 1 filter cover (41) and the No. 2 filter cover (42) are in contact with the upper end of the supporting column (11) in an initial state; The switching centralized component (14) comprises a fixed block (141), and the upper end of the fixed block (141) is fixed on the output end of the servo motor (142); a moving block (143) is arranged at the lower end of the fixed block (141); a rubber block (144) is fixedly connected between the fixed block (141) and the moving block (143); the moving block (143) and the fixed block (141) are mutually connected via a built-in spring (145); a magnet (146) is fixedly connected to the upper end of the moving block (143); an electromagnet (147) is arranged above the magnet (146), and the electromagnet (147) is mounted on the fixed block (141); an electric telescopic rod (148) is fixedly connected to the inner side of the moving block (143), and a plug block is mounted at the telescopic end of the electric telescopic rod (148).

2. A self-collecting high-negative-pressure vacuum cleaner for car washing according to claim 1, characterized in that: The rubber block (144) between the fixed block (141) and the movable block (143) is configured as a hollow structure, and the movable block (143) forms an elastic telescopic structure through a built-in spring (145) and the fixed block (141).

3. A self-collecting high-negative-pressure vacuum cleaner for car washing according to claim 1, characterized in that: The magnet (146) at the upper end of the movable block (143) and the electromagnet (147) on the fixed block (141) are located on the same vertical straight line, and the outer wall of the plug-in block at the end of the electric telescopic rod (148) inside the movable block (143) is in contact with the inner walls of the filter holes on the first filter cover (41) and the second filter cover (42).

4. A self-collecting high-negative-pressure vacuum cleaner for car washing according to claim 1, characterized in that: The driving component (15) comprises a reducer (151), and the reducer (151) is used to connect the lower output shaft of the servo motor (142) and the reciprocating screw (152), the reciprocating screw (152) is connected with a pressure block (153), and the pressure block (153) is installed on the support plate (8), one end of the pressure block (153) away from the reciprocating screw (152) is located between the support plate (8) and a cross plate (154), and the cross plate (154) is fixed inside the housing (1), a start button (155) is fixedly connected to the cross plate (154), and a close button (156) is fixedly connected to the support plate (8), and the start button (155) and the close button (156) are used to control the power on and off of the electromagnet (147).

5. A self-collecting high-negative-pressure vacuum cleaner for car washing according to claim 4, characterized in that: The lower ends of the reciprocating screw rod (152) and the pressing block (153) are threadedly connected, and the pressing block (153) can slide on the support plate (8).

6. A self-collecting high-negative-pressure vacuum cleaner for car washing according to claim 1, characterized in that: The regulating component (16) comprises an air delivery pipe (161), and the air delivery pipe (161) is used to connect the rubber block (144) and the sleeve ring (162), a center rod (163) is fixedly connected to the middle of the sleeve ring (162), and a striking rod (164) is installed on the center rod (163), and the striking rod (164) is connected to the inside of the center rod (163) through a return spring (165).

7. A self-collecting high-negative-pressure vacuum cleaner for car washing according to claim 6, characterized in that: The interiors of the sleeve ring (162) and the center rod (163) are interconnected, and the lower end of the striking rod (164) is in contact with the surface of the filter disc (4) in an initial state, and the upper end of the striking rod (164) forms a seamless sliding connection structure with the center rod (163) via a circumferentially fixed sealing ring.

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