Lubricating grease filling device capable of being remotely controlled

Abstract

The invention relates to the technical field of lubricating grease processing, and discloses a remotely controllable lubricating grease filling device which comprises a fixing plate, supporting columns are evenly and fixedly installed at the bottom of the fixing plate, a controller is arranged at the top of the fixing plate, and a storage assembly is arranged at the top of the fixing plate. And an auxiliary part is arranged on one side of the storage assembly, and the storage assembly comprises a storage tank which is fixedly arranged in the fixing plate in a sleeved mode. By starting a second electric push rod, the second electric push rod can control the position of a piston in a quantifying barrel, so that the volume of lubricating grease in the quantifying barrel is adjusted, when the lubricating grease in the quantifying barrel reaches the set amount, an alarm sends out a signal, a second electric valve is opened at the moment, and the lubricating grease in the quantifying barrel flows into a storage tank through a third connecting pipe; in this way, the amount of lubricating grease supplemented into the storage tank can be accurately controlled, too much or too little lubricating grease is prevented from entering the storage tank, and the effect that quantitative supplementing can be conducted on the storage tank is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of grease processing, in particular to a grease filling device capable of remote control. Background Art

[0002] In many fields of modern industry, such as machinery manufacturing, automobile industry, aerospace, etc., the normal operation of various mechanical equipment is highly dependent on good lubrication maintenance. Grease is a commonly used lubricant, and its filling quality and efficiency are directly related to the performance, service life and operation stability of the equipment.

[0003] Traditional grease filling devices face many challenges in practical applications. On the one hand, in the storage of grease, due to the lack of effective stirring and scraping mechanisms, grease is left in the storage container for a long time, which is prone to stratification. Thickeners and other ingredients at the bottom may be deposited, resulting in uneven overall performance of the grease, affecting the lubrication effect after filling. Moreover, the grease attached to the inner wall of the container gradually accumulates, which not only reduces the storage space, but also may contaminate the newly added grease due to deterioration. In addition, traditional devices are not fine enough for filtering grease, and foreign particles can easily enter the lubrication points of the equipment with the grease, aggravating friction, damaging equipment parts, and reducing the reliability and precision of the equipment. Summary of the invention

[0004] The object of the present invention is to provide a remotely controlled grease filling device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a remotely controlled grease filling device, comprising a fixed plate, support columns are evenly fixedly installed on the bottom of the fixed plate, a controller is arranged on the top of the fixed plate, a storage assembly is arranged on the top of the fixed plate, and an auxiliary component is arranged on one side of the storage assembly.

[0006] Preferably, the storage assembly includes: a storage tank, which is fixedly sleeved inside the fixed plate; a limiting cylinder, which is fixedly installed on the bottom of the inner wall of the fixed plate; and a motor, which is fixedly installed on the top of the storage tank.

[0007] Preferably, the outer wall of the limiting cylinder is evenly and equidistantly provided with liquid inlet holes, the interior of the limiting cylinder is provided with a floating ball, the top of the inner wall of the limiting cylinder is provided with a sensor module, the output end of the motor is provided with an electric push rod 1, the electric push rod 1 movably passes through the top of the storage tank and extends to the interior of the storage tank, the outer wall of the electric push rod 1 is fixedly sleeved with a connecting ring, L-shaped connecting rods are symmetrically fixedly installed on both sides of the connecting ring, a scraper is fixedly installed on the outer side of the L-shaped connecting rod, the scraper is in contact with the inner wall of the storage tank, a connecting column is fixedly installed at the telescopic end of the electric push rod 1, and stirring blades are equidistantly installed on the outer wall of the connecting column, a discharge pipe is provided at the bottom of the storage tank, and an electric valve 1 is provided at the middle end of the discharge pipe.

[0008] The motor drives the electric push rod to rotate, thereby driving the mixing blades on the connecting column and its outer wall to rotate synchronously.

[0009] Preferably, the auxiliary components include: a filtering component, which is arranged on the top of the fixing plate; and a quantitative component, which is arranged between the filtering component and the storage assembly.

[0010] Preferably, the filter component comprises: a filter box fixedly mounted on the top of the fixing plate; and a snap-fit ​​rod symmetrically fixedly mounted on both sides of the inner wall of the filter box.

[0011] Preferably, a feed pipe is provided on the top of the filter box, and a pipe cover is threadedly connected to the top of the feed pipe, a snap-fitting opening is provided on the front of the filter box, a sliding groove is provided on the opposite side of the snap-fitting rod, the snap-fitting rod is slidably connected with a slide rod through the sliding groove, a mounting plate is fixedly installed between the slide rods, snap-fitting grooves are equidistantly provided on the opposite side of the mounting plate, the mounting plate is snap-connected with a filter layer and a fine filter layer through the snap-fitting grooves, the fine filter layer is arranged directly below the filter layer, a snap-fitting plate is fixedly installed on the outer side of the mounting plate, the snap-fitting plate is snap-fitted with the filter box through the snap-fitting opening, and the filter layer is fixedly installed on the front side of the snap-fitting plate.

[0012] A two-stage progressive filtration system is formed by arranging a filtration layer and a fine filtration layer, with the fine filtration layer being located directly below the filtration layer.

[0013] Preferably, the quantitative component includes: a quantitative cylinder fixedly mounted on the top of the fixed plate.

[0014] Preferably, an electric push rod 2 is fixedly installed on the top of the metering cylinder, the telescopic end of the electric push rod 2 movably passes through the top of the metering cylinder and extends to the inside of the metering cylinder, and a piston is fixedly installed, the piston is adapted to the metering cylinder, an alarm is provided on the outer wall of the metering cylinder, one side of the metering cylinder is connected with a connecting pipe 2, the other end of the connecting pipe 2 is connected with a suction pump, the input end of the suction pump is connected with a connecting pipe 1, the other end of the connecting pipe 1 is connected to a filter box, the other side of the metering cylinder is connected with a connecting pipe 3, the other end of the connecting pipe 3 is connected to a storage tank, and an electric valve 2 is provided at the middle end of the connecting pipe 3.

[0015] The electric push rod 2 drives the piston to move up and down in the metering cylinder through the telescopic end, which can accurately adjust the volume space in the metering cylinder, thereby achieving precise control of the amount of grease.

[0016] The present invention provides a remotely controlled grease filling device, which has the following beneficial effects: (1) The present invention opens the pipe cover at the top of the feed pipe and pours the grease into the filter box. In the filter box, the grease passes through the filter layer and the fine filter layer on the mounting plate in sequence. The filter layer can remove larger particle impurities in the grease, and the fine filter layer can further filter out tiny particles, thereby ensuring that the grease entering the storage tank has a high purity.

[0017] (2) The present invention starts the electric push rod 2, which can control the position of the piston in the metering cylinder, thereby adjusting the volume of the grease in the metering cylinder. When the grease in the metering cylinder reaches the set amount, the alarm will send a signal. At this time, the electric valve 2 opens, and the grease in the metering cylinder flows into the storage tank through the connecting pipe 3. In this way, the amount of grease added to the storage tank can be accurately controlled to avoid too much or too little grease entering the storage tank, thereby ensuring that the storage tank can be quantitatively replenished.

[0018] (3) The present invention is started by a motor to drive the electric push rod to rotate. When the electric push rod rotates, the connecting ring on its outer wall and the L-shaped connecting rod and scraper on both sides of the connecting ring rotate accordingly. The scraper can scrape off the grease attached to the inner wall of the storage tank to prevent its accumulation from affecting the effective volume and quality of the grease in the storage tank. At the same time, the connecting column at the telescopic end of the electric push rod drives the stirring blade to rotate, stirring the grease in the storage tank, so that the grease remains in a uniform state, thereby preventing the grease from stratification or solidification due to long-term standing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3It is a cross-sectional view of the storage component structure of the present invention; Figure 4 It is a partial structural cross-sectional view of the storage component of the present invention; Figure 5 It is a cross-sectional view of the quantitative component structure of the present invention; Figure 6 This is a cross-sectional view of the filter component structure of the present invention.

[0020] In the figure: 1 fixing plate, 2 supporting column, 3 controller, 4 storage component, 5 auxiliary component; 411 storage tank, 412 discharge pipe, 413 electric valve 1, 414 limit cylinder, 415 sensor module, 416 floating ball, 417 motor, 418 electric push rod 1, 419 connecting ring, 4111 L-type connecting rod, 4112 scraper, 4113 connecting column, 4114 stirring blade; 51 filtering component, 511 filtering box, 512 feeding pipe, 513 pipe cover, 514 engaging rod, 515 sliding rod, 516 mounting plate, 517 engaging plate, 518 handle, 519 filtering layer, 5111 fine filtering layer; 52 quantitative component, 521 quantitative cylinder, 522 alarm, 523 electric push rod 2, 524 piston, 525 connecting pipe 1, 526 suction pump, 527 connecting pipe 2, 528 connecting pipe 3, 529 electric valve 2. DETAILED DESCRIPTION

[0021] 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.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0024] A preferred embodiment of a remotely controlled grease filling device provided by the present invention is as follows: Figure 1-6 As shown: a remotely controlled grease filling device includes a fixed plate 1, a support column 2 is evenly fixedly installed at the bottom of the fixed plate 1, a controller 3 is arranged on the top of the fixed plate 1, a storage component 4 is arranged on the top of the fixed plate 1, and an auxiliary component 5 is arranged on one side of the storage component 4. The storage component 4 includes: a storage tank 411, which is fixedly sleeved inside the fixed plate 1; a limiting cylinder 414, which is fixedly installed at the bottom of the inner wall of the fixed plate 1; a motor 417, which is fixedly installed on the top of the storage tank 411; the outer wall of the limiting cylinder 414 is evenly and equidistantly provided with liquid inlet holes, the inside of the limiting cylinder 414 is provided with a floating ball 416, the top of the inner wall of the limiting cylinder 414 is provided with a sensor module 415, and the output of the motor 417 An electric push rod 418 is provided at the outlet end, and the electric push rod 418 is movable through the top of the storage tank 411 and extends to the inside of the storage tank 411. A connecting ring 419 is fixedly sleeved on the outer wall of the electric push rod 418, and L-shaped connecting rods 4111 are symmetrically fixedly installed on both sides of the connecting ring 419. A scraper 4112 is fixedly installed on the outer side of the L-shaped connecting rod 4111, and the scraper 4112 contacts the inner wall of the storage tank 411. A connecting column 4113 is fixedly installed at the telescopic end of the electric push rod 418, and stirring blades 4114 are equidistantly installed on the outer wall of the connecting column 4113. A discharge pipe 412 is connected to the bottom of the storage tank 411, and an electric valve 413 is provided at the middle end of the discharge pipe 412.

[0025] Furthermore, in the embodiment, the motor 417 is started to drive the electric push rod 418 to rotate. When the electric push rod 418 rotates, the connecting ring 419 on its outer wall and the L-shaped connecting rod 4111 and the scraper 4112 on both sides of the connecting ring 419 rotate accordingly. The scraper 4112 can scrape off the grease attached to the inner wall of the storage tank 411 to prevent its accumulation from affecting the effective volume and grease quality of the storage tank 411. At the same time, the connecting column 4113 at the telescopic end of the electric push rod 418 drives the stirring blade 4114 to rotate, stir the grease in the storage tank 411, so as to keep the grease in a uniform state and prevent it from stratification or solidification due to long-term standing. Example

[0026] See also Figure 1-Figure 6, and on the basis of the first embodiment, it is further obtained that: the auxiliary component 5 includes: a filter component 51, which is arranged on the top of the fixed plate 1; a quantitative component 52, which is arranged between the filter component 51 and the storage component 4; the filter component 51 includes: a filter box 511, which is fixedly installed on the top of the fixed plate 1; a clamping rod 514, which is symmetrically fixedly installed on both sides of the inner wall of the filter box 511; a feed pipe 512 is connected to the top of the filter box 511, and a pipe cover 513 is threadedly connected to the top of the feed pipe 512. A clamping port is opened on the front of the filter box 511, and the clamping rod 514 is fixedly installed on both sides of the inner wall of the filter box 511; A sliding groove is provided on the opposite side, and the locking rod 514 is slidably connected to the sliding rod 515 through the sliding groove. A mounting plate 516 is fixedly installed between the sliding rods 515. A locking groove is equidistantly provided on the opposite side of the mounting plate 516. The mounting plate 516 is locked and connected with the filter layer 519 and the fine filter layer 5111 through the locking groove. The fine filter layer 5111 is arranged directly below the filter layer 519. A locking plate 517 is fixedly installed on the outer side of the mounting plate 516. The locking plate 517 is locked and connected to the filter box 511 through the locking port, and the filter layer 519 is fixedly installed on the front side of the locking plate 517.

[0027] Furthermore, in the embodiment, the grease is poured into the filter box 511 by opening the pipe cover 513 on the top of the feed pipe 512. In the filter box 511, the grease passes through the filter layer 519 and the fine filter layer 5111 on the mounting plate 516 in sequence. The filter layer 519 can remove larger particle impurities in the grease, and the fine filter layer 5111 further filters out tiny particles to ensure that the grease entering the storage tank 411 has a high degree of purity. The mounting plate 516 is slidably connected to the locking rods 514 on both sides of the inner wall of the filter box 511 through the sliding rod 515, which facilitates the installation and disassembly of the filter layer 519 and the fine filter layer 5111 for cleaning or replacement. The locking plate 517 is locked with the locking port on the front of the filter box 511 to ensure that the mounting plate 516 is stably installed in the filter box 511. Example

[0028] See also Figure 1-Figure 6, and on the basis of the first and second embodiments, it is further obtained that the quantitative component 52 includes: a quantitative cylinder 521, which is fixedly installed on the top of the fixed plate 1; an electric push rod 2 523 is fixedly installed on the top of the quantitative cylinder 521, the telescopic end of the electric push rod 2 523 movably penetrates the top of the quantitative cylinder 521 and extends to the inside of the quantitative cylinder 521, and a piston 524 is fixedly installed, the piston 524 is adapted to the quantitative cylinder 521, and an alarm 522 is arranged on the outer wall of the quantitative cylinder 521, one side of the quantitative cylinder 521 is connected with a connecting pipe 2 527, the other end of the connecting pipe 2 527 is connected with a suction pump 526, the input end of the suction pump 526 is connected with a connecting pipe 1 525, the other end of the connecting pipe 1 525 is connected with the filter box 511, the other side of the quantitative cylinder 521 is connected with a connecting pipe 3 528, the other end of the connecting pipe 3 528 is connected with the storage tank 411, and the middle end of the connecting pipe 3 528 is provided with an electric valve 2 529.

[0029] Furthermore, in the embodiment, by starting the electric push rod 2 523, the electric push rod 2 523 can control the position of the piston 524 in the metering cylinder 521, thereby adjusting the volume of the grease in the metering cylinder 521. When the grease in the metering cylinder 521 reaches the set amount, the alarm 522 will send a signal. At this time, the electric valve 2 529 opens, and the grease in the metering cylinder 521 flows into the storage tank 411 through the connecting pipe 3 528. In this way, the amount of grease added to the storage tank 411 can be accurately controlled to avoid too much or too little grease entering the storage tank 411, thereby ensuring the stable operation of the device and the reasonable storage of grease.

[0030] During use, when it is necessary to add grease to the interior of the storage tank 411, the pipe cover 513 on the top of the feed pipe 512 is opened, and the grease is poured into the filter box 511. In the filter box 511, the grease passes through the filter layer 519 and the fine filter layer 5111 on the mounting plate 516 in sequence. The filter layer 519 can remove larger particle impurities in the grease, and the fine filter layer 5111 further filters out tiny particles to ensure that the grease entering the storage tank 411 has a high purity. The mounting plate 516 is slidably connected to the snap-fit ​​rods 514 on both sides of the inner wall of the filter box 511 through the sliding rods 515 , it is convenient to install and disassemble the filter layer 519 and the fine filter layer 5111 for cleaning or replacement, the snap plate 517 is snap-connected with the snap-fit ​​port on the front of the filter box 511 to ensure the stable installation of the mounting plate 516 in the filter box 511, start the suction pump 526, the suction pump 526 works, extracts the filtered grease from the filter box 511 through the connecting pipe 1 525, and then transports the grease to the metering cylinder 521 through the connecting pipe 2 527, and then opens the electric valve 2 529, and enters the interior of the storage tank 411 through the connecting pipe 3 528. When the grease liquid in the storage tank 411 When the position changes, the floating ball 416 rises and falls accordingly. When the floating ball 416 rises to the position of the sensor module 415 at the top of the inner wall of the limit cylinder 414, the sensor module 415 can detect the signal and transmit it to the controller 3 so as to timely understand the inventory of the grease. When the storage tank 411 lacks grease due to filling, the internal quantitative amount of the storage tank 411 is added, and the electric push rod 523 is started. The electric push rod 523 can control the position of the piston 524 in the quantitative cylinder 521, thereby adjusting the volume of the grease in the quantitative cylinder 521. When the grease in the quantitative cylinder 521 reaches the set amount, the grease in the quantitative cylinder 521 is increased. When the amount of grease is measured, the alarm 522 will send a signal, and the electric valve 2 529 will open at this time, and the grease in the metering cylinder 521 will flow into the storage tank 411 through the connecting pipe 3 528, so that the amount of grease added to the storage tank 411 can be accurately controlled to avoid too much or too little grease entering the storage tank 411, thereby ensuring the stable operation of the device and the reasonable storage of grease. When the grease is stored in the storage tank 411, the motor 417 is started to drive the electric push rod 1 418 to rotate. When the electric push rod 1 418 rotates, the connecting ring 419 on its outer wall and the L on both sides of the connecting ring 419 The connecting rod 4111 and the scraper 4112 rotate accordingly, and the scraper 4112 can scrape off the grease attached to the inner wall of the storage tank 411 to prevent its accumulation from affecting the effective volume and grease quality of the storage tank 411. At the same time, the connecting column 4113 at the telescopic end of the electric push rod 418 drives the stirring blade 4114 to rotate, stirring the grease in the storage tank 411 to keep the grease in a uniform state, prevent it from being stratified or solidified due to long-term standing, and ensure that the grease has good fluidity and stability when filling. Finally, when filling is needed, the electric valve 413 is controlled to open, and the equipment that needs to be filled can be filled through the discharge pipe 412 and other devices.As the control center of the whole device, the controller 3 can receive signals from the sensor module 415, the alarm 522 and other components, and can control the working status of the motor 417, the electric push rod 1 418, the electric push rod 2 523, the suction pump 526, the electric valve 1 413, the electric valve 2 529 and other components according to the preset program or remote operation instructions. The user can communicate with the controller 3 through the remote middle end to realize the remote start, stop, parameter setting and other operations of the device.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A remotely controlled grease filling device, comprising a fixed plate (1), characterized in that: A support column (2) is evenly fixedly mounted on the bottom of the fixed plate (1), a controller (3) is arranged on the top of the fixed plate (1), a storage component (4) is arranged on the top of the fixed plate (1), and an auxiliary component (5) is arranged on one side of the storage component (4).

2. The remotely controlled grease filling device according to claim 1 is characterized in that: The storage component (4) comprises: A storage tank (411) is fixedly sleeved inside the fixed plate (1); A limiting cylinder (414) is fixedly mounted on the bottom of the inner wall of the fixing plate (1); The motor (417) is fixedly mounted on the top of the storage tank (411).

3. The remotely controlled grease filling device according to claim 2 is characterized in that: The outer wall of the limiting cylinder (414) is provided with liquid inlet holes at even intervals, the interior of the limiting cylinder (414) is provided with a floating ball (416), the top of the inner wall of the limiting cylinder (414) is provided with a sensor module (415), the output end of the motor (417) is provided with an electric push rod 1 (418), the electric push rod 1 (418) is movable through the top of the storage tank (411) and extends to the interior of the storage tank (411), the outer wall of the electric push rod 1 (418) is fixedly sleeved with a connecting ring (419), and the two sides of the connecting ring (419) are opposite to each other. An L-shaped connecting rod (4111) is fixedly installed, and a scraper (4112) is fixedly installed on the outer side of the L-shaped connecting rod (4111), and the scraper (4112) is in contact with the inner wall of the storage tank (411). A connecting column (4113) is fixedly installed on the telescopic end of the electric push rod (418), and stirring blades (4114) are equidistantly installed on the outer wall of the connecting column (4113). The bottom of the storage tank (411) is connected to a discharge pipe (412), and an electric valve (413) is arranged at the middle end of the discharge pipe (412).

4. The remotely controlled grease filling device according to claim 1 is characterized in that: The auxiliary component (5) comprises: A filter component (51) is arranged on the top of the fixed plate (1); The quantitative component (52) is arranged between the filtering component (51) and the storage component (4).

5. The remotely controlled grease filling device according to claim 4 is characterized in that: The filtering component (51) comprises: A filter box (511) is fixedly mounted on the top of the fixed plate (1); The locking rods (514) are symmetrically fixedly mounted on both sides of the inner wall of the filter box (511).

6. The remotely controlled grease filling device according to claim 5, characterized in that: The top of the filter box (511) is connected to a feed pipe (512), the top of the feed pipe (512) is threadedly connected to a pipe cover (513), the front of the filter box (511) is provided with a snap-fit ​​opening, the opposite side of the snap-fit ​​rod (514) is provided with a slide groove, the snap-fit ​​rod (514) is slidably connected to a slide rod (515) through the slide groove, a mounting plate (516) is fixedly installed between the slide rods (515), and the mounting plate (516) is opposite to the mounting plate (516). One side is provided with snap-fit ​​grooves at equal intervals, the installation plate (516) is snap-fitted with a filter layer (519) and a fine filter layer (5111) via the snap-fit ​​grooves, the fine filter layer (5111) is arranged directly below the filter layer (519), a snap-fit ​​plate (517) is fixedly mounted on the outside of the installation plate (516), the snap-fit ​​plate (517) is snap-fitted with the filter box (511) via a snap-fit ​​opening, and the filter layer (519) is fixedly mounted on the front side of the snap-fit ​​plate (517).

7. The remotely controlled grease filling device according to claim 4 is characterized in that: The quantitative component (52) comprises: The metering cylinder (521) is fixedly mounted on the top of the fixed plate (1).

8. The remotely controlled grease filling device according to claim 7, characterized in that: A second electric push rod (523) is fixedly installed on the top of the quantitative cylinder (521). The telescopic end of the second electric push rod (523) movably passes through the top of the quantitative cylinder (521) and extends into the interior of the quantitative cylinder (521). A piston (524) is fixedly installed on the second electric push rod. The piston (524) is adapted to the quantitative cylinder (521). An alarm (522) is provided on the outer wall of the quantitative cylinder (521). A second connecting pipe (527) is provided on one side of the quantitative cylinder (521). The other end of the second connecting pipe (527) is connected to a suction pump (526), ​​the input end of the suction pump (526) is connected to a first connecting pipe (525), the other end of the first connecting pipe (525) is connected to the filter box (511), the other side of the metering cylinder (521) is connected to a third connecting pipe (528), the other end of the third connecting pipe (528) is connected to the storage tank (411), and the middle end of the third connecting pipe (528) is provided with an electric valve 2 (529).

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