Anti-backflow dirt cleaning device for cleaning equipment

Abstract

The present disclosure provides a backflow prevention dirty cleaning device for cleaning equipment, comprising a container body, an air suction port and a dirty inlet arranged on the container body, a cyclone separation cavity and a storage cavity are sequentially arranged in the container body from top to bottom, a first opening is formed at the intersection of the storage cavity and the cyclone separation cavity, the cross section of the lower end of the cyclone separation cavity gradually decreases from top to bottom and extends to the first opening, the air suction port and the dirty inlet are respectively communicated with the cyclone separation cavity, under the action of the suction force at the air suction port, sewage mixed with garbage enters the cyclone separation cavity from the dirty inlet and flows into the storage cavity along the cyclone separation cavity spirally downward. The present disclosure can prevent the liquid in the storage cavity from flowing back, etc., through the action of the spiral, the sewage and the garbage are better separated from the airflow, the sewage and the garbage are not easy to adhere to the inner wall of the container body, the cross section of the lower end of the cyclone separation cavity gradually decreases from top to bottom, which can ensure that the spiral action is more uniform and constant, etc.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a cleaning device, in particular to an anti-backflow dirt cleaning device for a cleaning device. BACKGROUND

[0002] People in the early use of floor cleaning tools such as brooms, mops, floor wipes, etc., which mainly rely on manual operation to complete the cleaning work. With the rapid development of science and technology and the continuous progress of society, people's living conditions are constantly improving, and the requirements for living environment are getting higher and higher, and the cleaning concept is getting more and more attention. Therefore, people's requirements for floor cleaning equipment are gradually increasing, such as dust collectors, floor washing machines, floor wiping machines, and rolling brush type cleaning equipment. In order to better clean the garbage and stains attached to the ground, the existing cleaning equipment is generally equipped with a water supply system to clean the cleaning roller and other cleaning tools, and then the sewage is pumped into the corresponding sewage tank and other cleaning devices for collection and treatment. However, the sewage tank and other cleaning devices of the existing cleaning equipment have defects in structure, which can easily cause sewage backflow, air flow backflow, etc. The garbage in the sewage is easily attached to the inner wall of the sewage tank and other cleaning devices, which is very troublesome to clean and very inconvenient to operate. It is time-consuming and labor-intensive, and the garbage in the sewage is not easy to separate from the air flow, which can easily enter the corresponding suction device, even block the pipeline, damage the equipment, etc., reducing the stability, reliability, cleaning effect, service life, etc. of the product, and cannot meet people's increasingly high demands, affecting the application and development of the product. SUMMARY

[0003] The purpose of the present disclosure is to provide an anti-backflow dirt cleaning device for a cleaning device, which can solve at least one of the above technical problems. The technical solution of the present disclosure is as follows:

[0004] An anti-backflow dirt cleaning device for a cleaning device, comprising a container body, an air suction port and a sewage inlet provided on the container body, a cyclone separation chamber and a storage chamber are sequentially arranged in the container body from top to bottom, a first opening is formed at the intersection of the storage chamber and the cyclone separation chamber, the cross section of the lower end of the cyclone separation chamber gradually decreases from top to bottom and extends to the first opening, the air suction port and the sewage inlet are respectively communicated with the cyclone separation chamber, under the action of the suction force at the air suction port, the sewage mixed with garbage enters the cyclone separation chamber from the sewage inlet and flows into the storage chamber along the cyclone separation chamber spirally downward, the sewage mixed with garbage is finally separated from the air flow, and in the state of horizontally tilting the container body, the lowest point of the storage chamber is lower than the lowest point of the first opening.

[0005] In some embodiments, the air suction port is located at the center of the top of the cyclone separation chamber, the cyclone separation chamber sequentially comprises a first chamber and a second chamber from top to bottom, the cross section of the first chamber is equal from top to bottom, the cross section of the second chamber gradually decreases from top to bottom and extends to the first opening, and the sewage inlet is communicated with the first chamber.

[0006] In some embodiments, the air suction port is connected with an air suction pipe, and the air suction pipe extends into the cyclone separation cavity.

[0007] In some embodiments, the air suction pipe is provided with air inlet holes, all the air inlet holes are covered by a first filter screen, the first filter screen is used for blocking sewage and garbage from entering the air suction pipe, the air suction pipe passes through the first cavity, and a lower end of the air suction pipe extends into the second cavity.

[0008] In some embodiments, the air suction port is connected with a second connecting pipe, the second connecting pipe is located above the container body, and a cross section of an inner cavity of an upper end of the second connecting pipe gradually decreases from top to bottom.

[0009] In some embodiments, the top of the container body is provided with an upper cover, the air suction port is arranged on the upper cover, and the second connecting pipe is integrally formed with the upper cover.

[0010] In some embodiments, the bottom of the container body is provided with a sewage discharge port, and the sewage discharge port is in communication with the bottom of the storage cavity.

[0011] In some embodiments, the container body comprises a separation barrel and a storage barrel, the cyclone separation cavity is an inner cavity of the separation barrel, the storage cavity is an inner cavity of the storage barrel, the bottom of the separation barrel is provided with a cover plate connected with the top of the storage barrel, and the first through port is arranged on the cover plate.

[0012] In some embodiments, the bottom of the cover plate is provided with a first protruding portion protruding downward, and the first through port is arranged on the first protruding portion.

[0013] In some embodiments, the bottom of the cover plate is provided with a first connecting sleeve connected with the storage barrel, the first protruding portion is located in the first connecting sleeve, and a first sealing ring is arranged between the first connecting sleeve and the storage barrel.

[0014] The beneficial effects of the present disclosure are: during use, the dirt cleaning device is installed on the corresponding cleaning equipment such as the scrubber, the suction port is connected with the corresponding suction device such as the air extractor, and the mixed sewage with garbage is generated after the cleaning equipment washes the ground. Under the action of the suction force at the suction port, the mixed sewage with garbage enters the cyclone separation chamber from the dirt inlet, and then the mixed sewage with garbage and the airflow spiral downward into the storage chamber. The mixed sewage with garbage is finally separated from the spiral airflow, and the airflow spirally flows from the lower part to the upper part of the middle part of the storage chamber and the cyclone separation chamber in sequence, and finally the airflow flows out from the suction port. Through the spiral effect, the sewage and garbage are better separated from the airflow, the sewage and garbage are not easy to adhere to the inner wall of the container main body, the cleaning inside the container main body can be better guaranteed, and the like. The sewage and garbage are not easy to enter the corresponding suction device, even to block the pipeline, damage the equipment, and the like. The cross section of the lower end of the cyclone separation chamber gradually decreases from top to bottom. As the mixed sewage with garbage and the airflow spiral downward, the spiral speed can be compensated, the spiral effect can be more uniform and constant, and the like. In the horizontal dumping state of the container main body, the lowest point of the storage chamber is lower than the lowest point of the first through port. Therefore, when the container main body is inclined or horizontally dumped, the liquid in the storage chamber can also be prevented from flowing back, thereby improving the stability, safety, reliability, cleaning effect, service life, and the like of the product, meeting the increasingly high needs of people, and expanding the application and development of the product.

[0015] In addition, in the technical solutions of the present disclosure, any unexplained can be achieved by using conventional means in the art. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed in the specific embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0017] Figure 1 A cross-sectional view of a backflow prevention dirt cleaning device for cleaning equipment according to an embodiment of the present disclosure.

[0018] Figure 2 A cross-sectional view of a backflow prevention dirt cleaning device for cleaning equipment according to an embodiment of the present disclosure. Figure 1 A local enlarged view of A in FIG. 4.

[0019] Figure 3 A cross-sectional view of a backflow prevention dirt cleaning device for cleaning equipment according to an embodiment of the present disclosure in a horizontal dumping state.

[0020] Figure 4 Structure diagram of the anti-backflow dirty cleaning device for cleaning equipment according to an embodiment of the present disclosure.

[0021] Figure 5 Exploded view of the anti-backflow dirty cleaning device for cleaning equipment according to an embodiment of the present disclosure.

[0022] Figure 6 Structure diagram of the suction duct according to an embodiment of the present disclosure.

[0023] The reference signs in the drawings are explained as follows: container body 1, separation barrel 101, storage barrel 102, cover plate 103, first protruding part 104, first connecting sleeve 105, first sealing ring 106, cyclone separation cavity 11, first cavity 111, second cavity 112, upper cover 12, dirt outlet 13, storage cavity 14, first through port 15, suction port 2, dirt inlet 3, suction duct 4, air inlet hole 41, first filter screen 42, first connecting part 43, first connecting pipe 5, second connecting pipe 6, first groove body 61, dirt valve 7. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present disclosure, rather than all the embodiments, and are only used to explain the present disclosure, and are not used to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0025] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "two ends", "two sides", "bottom", "top" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary" and the like are only for descriptive purposes and can simply be used to more clearly distinguish different components, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, can also be integrally connected, can be mechanical connection, can also be electrical connection, can be direct connection, can also be indirect connection through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0027] Referring to Figures 1-6 As shown, the dirt cleaning device for cleaning equipment according to the present disclosure is schematically shown, mainly for corresponding cleaning equipment such as scrubber, sweeper, etc. The dirt cleaning device comprises a container body 1, which can be a barrel, a box or other suitable container in the prior art, and the container body 1 is provided with an air suction port 2 and a dirt inlet 3. The container body 1 is sequentially provided with a cyclone separation chamber 11 and a storage chamber 14 from top to bottom. The air suction port 2 and the dirt inlet 3 are respectively communicated with the cyclone separation chamber 11, and the storage chamber 14 and the cyclone separation chamber 11 form a first opening 15 at the intersection. The cross section of the lower end of the cyclone separation chamber 11 gradually decreases from top to bottom and extends to the first opening 15, such as inverted cone or other suitable shape in the prior art.

[0028] Referring to Figure 3 As shown, in the state that the container body 1 is horizontally tilted, the lowest point of the storage chamber 14 is lower than the lowest point of the first opening 15, and the lowest point of the storage chamber 14 and the lowest point of the first opening 15 have a certain height difference, such as that the first opening 15 is eccentric to the storage chamber 14, the storage chamber 14 is conical or the storage chamber 14 is other suitable shape in the prior art, etc.

[0029] In use, the dirt cleaning device is installed on a corresponding cleaning device such as a floor washing machine or floor mopping machine, the suction port 2 is connected with a corresponding suction device such as a suction fan, and after the cleaning device cleans the ground, sewage mixed with garbage is generated. Under the action of the suction force at the suction port 2, the sewage mixed with garbage enters the cyclone separation chamber 11 from the dirt inlet 3, and then the sewage mixed with garbage and the airflow spiral downward into the storage chamber 14. The sewage mixed with garbage is finally separated from the spiral airflow, and the sewage mixed with garbage is deposited in the storage chamber 14, while the airflow spirally flows from the lower part to the upper part of the storage chamber 14 and the middle part of the cyclone separation chamber 11 in sequence, and finally the airflow flows out of the suction port 2. Through the effect of the spiral, the sewage and garbage are better separated from the airflow, the sewage and garbage are not easy to adhere to the inner wall of the container main body, and the cleaning of the container main body 1 can be better ensured, and the sewage and garbage are not easy to enter the corresponding suction device or even block the pipeline and damage the equipment. The cross section of the lower end of the cyclone separation chamber 11 gradually decreases from top to bottom, and as the sewage mixed with garbage and the airflow spiral downward, the spiral speed can be compensated, the spiral effect can be more uniform and constant, and the garbage and sewage can be better separated from the airflow. In the state of horizontal tilting of the container main body 1, the lowest point of the storage chamber 14 is lower than the lowest point of the first through port 15, so when the container main body 1 is tilted or horizontally tilted, the liquid in the storage chamber 14 can also be prevented from flowing back, which is safer and more reliable, and under the premise of meeting other structural performance of the cyclone suction type container main body, the height difference between the lowest point of the storage chamber 14 and the lowest point of the first through port 15 can be as large as possible, and the backflow prevention effect is better.

[0030] The suction port 2 is located at the top center of the cyclone separation chamber 11, the cyclone separation chamber 11 includes a first chamber 111 and a second chamber 112 in sequence from top to bottom, the cross section of the first chamber 111 is equal from top to bottom, and the cross section of the second chamber 112 gradually decreases from top to bottom and extends to the first through port 15. The dirt inlet 3 is in communication with the first chamber 111, and under the action of the suction force at the suction port 2, the sewage mixed with garbage enters the first chamber 111 of the cyclone separation chamber 11 from the dirt inlet 3, and then the sewage mixed with garbage and the airflow spiral downward along the first chamber 111 and the second chamber 112 in sequence. The first chamber 111 can ensure that the liquid enters more uniformly and stably, and the spiral effect is better. As the sewage mixed with garbage and the airflow spiral downward, the spiral speed can be compensated, and the second chamber 112 can ensure that the spiral effect is more uniform and constant. Also, the garbage and sewage can be better separated from the airflow, and when the container main body 1 is tilted or tilted, the liquid and gas can also be prevented from flowing back.

[0031] The suction port 2 is connected with the suction pipe 4, and the suction pipe 4 extends into the cyclone separation chamber 11, which is convenient for better suction, makes the spiral wind in the cyclone separation chamber 11 stronger and the effect better, and the operation is more convenient.

[0032] The air suction pipe 4 is provided with air inlet holes 41, the size, shape, etc. of the air inlet holes 41 are determined according to specific conditions, such as the air suction pipe 4 is uniformly distributed with air inlet holes 41 along its circumferential direction, which can make the spiral wind in the cyclone separation chamber 11 stronger and the effect better, etc. All air inlet holes 41 are covered by the first filter screen 42, the first filter screen 42 only allows air to pass through, sewage and garbage cannot pass through the mesh of the first filter screen 42, so that the first filter screen 42 can block sewage and garbage from entering the air suction pipe 4, prevent sewage and garbage from entering the corresponding suction device, even block the pipeline, damage the equipment, etc. The air suction pipe 4 can be inverted conical, the air inlet holes 41 are arranged along the conical outer wall of the air suction pipe 4, if the first filter screen 42 has sewage and garbage, the sewage and garbage can also automatically slide down, it is not easy to block the first filter screen 42, etc., it is safer and more reliable, etc. The air suction pipe 4 passes through the first chamber 111, and the lower end of the air suction pipe 4 extends into the second chamber 112, which can make the spiral wind in the cyclone separation chamber 11 stronger and the effect better, etc. In addition, the air suction pipe 4 can also be other suitable shapes in the prior art, an arc surface or an inclined surface is arranged on the outer side of the air suction pipe 4, and the air inlet holes 41 are arranged on the arc surface or the inclined surface.

[0033] The air suction port 2 is connected with the second connecting pipe 6, the second connecting pipe 6 is located above the container body 1, the inner cavity of the upper end of the second connecting pipe 6 gradually decreases from top to bottom, such as a horn, etc., when a part of the sewage is mixed in the airflow flowing out through the second connecting pipe 6, the water vapor condenses, and the sewage can automatically slide down along the inner wall of the second connecting pipe 6, preventing sewage and garbage from entering the corresponding suction device, even blocking the pipeline, damaging the equipment, etc., it is safer and more reliable, etc.

[0034] The top of the container body 1 is provided with an upper cover, the upper cover and the container body 1 can be connected by adhesive sealing, etc., the air suction port 2 is arranged on the upper cover, the operation is more convenient, etc. Further, the second connecting pipe 6 is integrally formed with the upper cover, the structure is more stable and reliable, and the operation is more convenient.

[0035] The top of the air suction pipe 4 is provided with a first connecting part 43, which can be cylindrical or other suitable shape in the prior art, the second connecting pipe 6 is provided with a first groove 61 matched with the first connecting part 43, the first connecting part 43 is inserted into the first groove 61, and the structure can also be sealed by adhesive or provided with a buckle structure, etc., the structure is more compact and stable.

[0036] The sewage inlet 3 is connected with the first connecting pipe 5, the first connecting pipe 5 is located outside the container body 1, the first connecting pipe 5 is convenient for connecting the corresponding device on the cleaning equipment, and the operation is more convenient.

[0037] The bottom of the container body 1 is provided with a sewage outlet 13 which is communicated with the bottom of the storage cavity 14, and the sewage outlet 13 can be connected with a sewage valve 7 which is usually closed, so as to facilitate the periodic discharge of sewage and garbage in the container body 1 according to the needs. In addition, under the action of the suction force at the suction port 2, if clean liquid such as clean water or cleaning liquid enters the cyclone separation cavity 11 from the sewage inlet 3, the clean liquid and the airflow spiral downward, which can clean the inside of the container body 1. Then open the sewage valve 7 to discharge the liquid in the container body 1, so as to realize the self-cleaning of the inside of the container body 1, which is more simple, convenient, time-saving and labor-saving.

[0038] The container body 1 can be a barrel, a box or other suitable container in the prior art, such as a barrel structure, which includes a separation barrel 101 and a storage barrel 102. The cyclone separation cavity 11 is the inner cavity of the separation barrel 101, and the storage cavity 14 is the inner cavity of the storage barrel 102. The bottom of the separation barrel 101 is provided with a cover plate 103 connected with the top of the storage barrel 102, and the first through port 15 is located on the cover plate 103. The cover plate 103 and the storage barrel 102 can be connected by threads, adhesive sealing connection, etc., which is more simple, stable, convenient to operate, etc.

[0039] The bottom of the cover plate 103 is provided with a first protruding portion 104 protruding downward, and the first through port 15 is located on the first protruding portion 104, so that the first through port 15 protrudes in the storage cavity 14, which can better prevent backflow and is more safe, stable and reliable. The bottom of the cover plate 103 is also provided with a first connecting sleeve 105 connected with the storage barrel 102, and the first protruding portion 104 is located in the first connecting sleeve 105. A first sealing ring 106 can also be arranged between the first connecting sleeve 105 and the storage barrel 102, which is more convenient, tight, compact, stable and reliable in structure.

[0040] Compared with the prior art, the advantages of the present disclosure are that: through the action of the spiral, the sewage and garbage are better separated from the airflow, the sewage and garbage are not easy to adhere to the inner wall of the container body, the cleanliness in the container body 1 can be better ensured, and the sewage and garbage are not easy to enter the corresponding suction device, even to block the pipeline, damage the equipment, etc.; the cross section of the second cavity 112 gradually decreases from top to bottom, the air suction port 2 is located at the top center of the cyclone separation cavity 11, the sewage inlet 3 is communicated with the first cavity 111, the first cavity 111 can ensure that the liquid enters more uniformly and stably, the spiral effect is better, as the sewage mixed with garbage and airflow spiral downward, the second cavity 112 can compensate the spiral speed, can ensure that the spiral action is more uniform and constant, etc., which is also convenient for the garbage and sewage to be better separated from the airflow, etc.; in the state that the container body 1 is horizontally tilted, the lowest point of the storage cavity 14 is lower than the lowest point of the first through port 15, the lowest point of the storage cavity 14 and the lowest point of the first through port 15 have a certain height difference, so when the container body 1 is tilted or horizontally tilted, the liquid in the storage cavity 14 can also be prevented from flowing back, etc.; the first filter screen 42 on the air suction pipe 4 can block the sewage and garbage from entering the air suction pipe 4, the air suction pipe 4 can be inverted conical, the air inlet hole 41 is arranged along the conical outer wall of the air suction pipe 4, and the sewage and garbage on the first filter screen 42 can automatically slide downward; the air suction port 2 is connected with the second connecting pipe 6, the inner cavity of the upper end of the second connecting pipe 6 gradually decreases from top to bottom, and the sewage can automatically slide downward along the inner wall of the second connecting pipe 6; the sewage outlet 13 and the sewage valve 7 facilitate the sewage and garbage in the container body 1 to be discharged regularly according to the needs, etc.; thereby improving the stability, safety, reliability, cleaning effect, service life, etc. of the product, meeting the increasingly high demands of people, and expanding the application and development of the product.

[0041] The above only describes some embodiments of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, but not to limit them, and it should be understood that for those skilled in the art, without departing from the creative concept of the present disclosure, the above description can be improved or replaced, and all these improvements and replacements shall belong to the protection scope of the appended claims of the present disclosure. In this case, all details can be replaced by equivalent elements, and the materials, shapes and sizes can be arbitrary.

Claims

1. Anti-backflow dirt cleaning device for cleaning equipment, characterized in that, The container body (1) is provided with a cyclone separation chamber (11) and a storage chamber (14) from top to bottom, the storage chamber (14) and the cyclone separation chamber (11) form a first opening (15), the cross section of the lower end of the cyclone separation chamber (11) gradually decreases from top to bottom and extends to the first opening (15), the suction port (2) and the sewage inlet (3) are communicated with the cyclone separation chamber (11), under the action of the suction force at the suction port (2), the sewage mixed with garbage enters the cyclone separation chamber (11) from the sewage inlet (3) and flows into the storage chamber (14) along the cyclone separation chamber (11) spirally downward, the sewage mixed with garbage is finally separated from the airflow, in the state that the container body (1) is horizontally tilted, the lowest point of the storage chamber (14) is lower than the lowest point of the first opening (15); The suction port (2) is located at the top center of the cyclone separation chamber (11), the cyclone separation chamber (11) comprises a first chamber (111) and a second chamber (112) from top to bottom, the cross section of the first chamber (111) is equal from top to bottom, the cross section of the second chamber (112) gradually decreases from top to bottom and extends to the first opening (15), the sewage inlet (3) is communicated with the first chamber (111); The suction port (2) is connected with a suction pipe (4), the suction pipe (4) extends into the cyclone separation chamber (11); The suction pipe (4) is provided with air inlet holes (41), all the air inlet holes (41) are covered by a first filter screen (42), the first filter screen (42) is used for blocking the sewage and garbage from entering the suction pipe (4), the suction pipe (4) passes through the first chamber (111), and the lower end of the suction pipe (4) extends into the second chamber (112); The bottom of the container body (1) is provided with a sewage outlet (13), the sewage outlet (13) is communicated with the bottom of the storage chamber (14); The container body (1) comprises a separation barrel (101) and a storage barrel (102), the cyclone separation chamber (11) is an inner chamber of the separation barrel (101), the storage chamber (14) is an inner chamber of the storage barrel (102), the bottom of the separation barrel (101) is provided with a cover plate (103) connected with the top of the storage barrel (102), and the first opening (15) is located on the cover plate (103).

2. The anti-backflow dirt cleaning device for a cleaning apparatus according to claim 1, characterized by, The suction port (2) is connected with a second connecting pipe (6), the second connecting pipe (6) is located above the container body (1), and the inner chamber cross section of the upper end of the second connecting pipe (6) gradually decreases from top to bottom.

3. A backflow prevention dirt cleaning device for a cleaning apparatus according to claim 2, characterized in that, The top of the container body (1) is provided with an upper cover (12), the suction port (2) is arranged on the upper cover (12), and the second connecting pipe (6) is integrally formed with the upper cover (12).

4. The anti-backflow dirt cleaning device for a cleaning apparatus according to claim 1, characterized by, The bottom of the cover plate (103) is provided with a first protruding part (104) protruding downward, and the first through hole (15) is located on the first protruding part (104).

5. A backflow prevention dirt cleaning device for a cleaning apparatus according to claim 4, characterized in that, The bottom of the cover plate (103) is provided with a first connecting sleeve (105) connected with the storage barrel (102), the first protruding part (104) is located in the first connecting sleeve (105), and a first sealing ring (106) is arranged between the first connecting sleeve (105) and the storage barrel (102).

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