A solid-liquid separation vacuum cleaner with good separation effect

Abstract

The present invention discloses a solid-liquid separation vacuum cleaner with good separation effect, which relates to the technical field of vacuum cleaners, including a garbage bin and a vacuum tube, wherein a fixed plate 1 and a fixed plate 2 are arranged at intervals in the garbage bin, a feed connecting frame is installed on the fixed plate 1, a separation frame is arranged on the fixed plate 2, and the feed connecting frame corresponds vertically to the separation frame up and down; one end of the vacuum tube is located in the garbage bin and connected to the top of the feed connecting frame, and the other end of the vacuum tube is located outside the garbage bin; the space between the fixed plate 1 and the fixed plate 2 in the garbage bin is a solid garbage placement cavity, and the space below the fixed plate 2 in the garbage bin is a liquid garbage placement cavity; a pressing component is arranged at the upper end of the garbage bin. The present invention solves the problem in the prior art that after the garbage in the garbage bin is separated, water will remain in the solid garbage, resulting in poor separation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and in particular to a solid-liquid separation vacuum cleaner with good separation effect. Background Art

[0002] A vacuum cleaner is a relatively practical electrical appliance in our lives. It is often used for vacuuming and water absorption. After sucking solids or liquids through the suction port, they are separated inside the vacuum cleaner. In the prior art, application number CN202323497401.6 discloses a solid-liquid separation vacuum cleaner with good separation effect, including a sewage tank, wherein a processing unit for solid-liquid separation of dirt is arranged in the sewage tank, wherein the processing unit includes a water storage tank fixedly connected to the sewage tank, wherein a spiral lifting rod is rotatably connected in the water storage tank, wherein the spiral lifting rod is closely attached to the side wall of the water storage tank, wherein a plurality of first filter holes for filtering sewage are provided on one side of the water storage tank close to the spiral lifting rod, wherein a water inlet for introducing dirt is provided at the top of the sewage tank, wherein the water inlet is connected to the water storage tank. In the above scheme, by providing a water storage tank, a spiral lifting rod, a mounting frame, a motor and a first filter hole, the solid-liquid separation work is continuously performed during the continuous introduction of dirt.

[0003] In this technical solution, solids or liquids are sucked into a garbage prevention box through a suction tube on a vacuum cleaner, and solid garbage and liquid garbage are separated in the box. However, the separation means used in the prior art have some defects. For example, both solid garbage and liquid garbage will first enter a water storage tank, and then the solid garbage and liquid garbage in the water storage tank will be separated by a spiral lifting rod. Such a separation process will cause the solid garbage and most of the dust to be mixed with the liquid garbage first. After the separation is completed, some accumulated water will still remain in the solid garbage, so the separation effect is poor. Summary of the invention

[0004] The embodiment of the present invention provides a solid-liquid separation vacuum cleaner with good separation effect to solve the problems in the background technology.

[0005] The embodiment of the present invention adopts the following technical scheme: a solid-liquid separation vacuum cleaner with good separation effect, including a garbage bin and a vacuum tube, wherein a fixed plate 1 and a fixed plate 2 are arranged at intervals in the garbage bin, a feed connection frame is installed on the fixed plate 1, and a separation frame is arranged on the fixed plate 2, and the feed connection frame corresponds vertically to the separation frame up and down; one end of the vacuum tube is located in the garbage bin and connected to the top of the feed connection frame, and the other end of the vacuum tube is located outside the garbage bin; the space between the fixed plate 1 and the fixed plate 2 in the garbage bin is a solid garbage placement cavity, and the space below the fixed plate 2 in the garbage bin is a liquid garbage placement cavity, and the separation frame can separate the solid garbage and liquid garbage falling from the feed connection frame; a pressing component is provided at the upper end of the garbage bin, and the working end of the pressing component is connected to the top of the feed connection frame, and the feed connection frame can be pushed by the pressing component to move downward on the fixed plate 1 and dock with the separation frame. The problem that the solid garbage in the garbage bin will have residual water after separation is completed in the prior art, resulting in poor separation effect, is solved.

[0006] Furthermore, a discharge port is provided on the side wall of the trash bin, and the discharge port corresponds to the solid waste placement cavity provided in the trash bin. The trash bin can discharge the solid waste inside through the discharge port, and a sealing member is installed in the discharge port on the trash bin, and the discharge port can be closed by the sealing member. The discharge port is provided on the trash bin to discharge the solid waste because the solid waste is generally larger in size, so the discharge port is provided to facilitate the removal of the solid waste from the trash bin without causing blockage.

[0007] Furthermore, a discharge pipe is provided on the side wall of the trash bin, and the discharge pipe corresponds to the liquid waste placement cavity provided in the trash bin. The trash bin can discharge the solid waste inside through the discharge pipe, and a solenoid valve for closing the pipe is provided on the discharge pipe. The discharge pipe is used to discharge the liquid waste in the liquid waste placement cavity.

[0008] Furthermore, the feed connection frame is composed of a top connection sleeve and a bottom docking sleeve, the side end of the top connection sleeve is connected to the dust suction pipe, the top end of the top connection sleeve is connected to the pressing assembly, the bottom docking sleeve is an open opening, the bottom docking sleeve is located directly above the separation frame, the bottom docking sleeve is slidably arranged on the fixed plate 1, and the bottom docking sleeve is tightly connected to the separation frame when moving vertically. The top connection sleeve is used to connect the pressing assembly and the dust suction pipe, which is convenient for garbage to enter and can drive the bottom docking sleeve to move through the operation of the pressing assembly, and the bottom docking sleeve is used to discharge garbage and can be connected to the separation frame.

[0009] Further, the bottom docking sleeve is provided with extension plates on all sides, each of the extension plates is provided with a limit rod, the bottom end of each limit rod is arranged on the fixed plate 1, each limit rod is also provided with a spring around, the bottom end of each spring is located on the fixed plate 1, and the top end of each spring contacts the bottom surface of an extension plate. The arrangement of multiple extension plates, limit rods and springs on the bottom docking sleeve allows the bottom docking sleeve to move smoothly when moving on the fixed plate 1, and the multiple springs can reset the bottom docking sleeve.

[0010] Furthermore, the separation frame is a conical cylinder, a docking plate is provided in the middle of the separation frame, and a plurality of circular filter holes are provided on the separation frame above the docking plate. The separation frame is configured to be conical and connected to the bottom docking sleeve, so that the filter holes on the separation frame can be completely located in the bottom docking sleeve, and the liquid garbage can pass through the filter holes and enter the bottom of the separation frame through the docking plate.

[0011] Furthermore, a shielding frame is provided on the top of the separation frame, which allows the garbage falling from the bottom docking sleeve to scatter around the shielding frame after colliding with the shielding frame, thereby reducing the possibility of direct contact between the solid garbage and the filter hole, and preventing the filter hole from being blocked by the solid garbage.

[0012] Furthermore, the separation frame is a conical cylinder, and a plurality of strip filter holes are arranged on the separation frame above the docking plate, and a protective frame is arranged above each strip filter hole on the separation frame. Two forms of the separation frame are provided, namely, circular filter holes and strip filter holes, and different separation frames can be used for different use environments.

[0013] Further, the pressing assembly includes a fixed sleeve and a pressing rod, the fixed sleeve is arranged on the top of the trash bin, the pressing rod is arranged in the fixed sleeve, the bottom end of the pressing rod is rotatably connected to the top connecting sleeve, the top end of the pressing rod is provided with a knob, the top end of the pressing rod is provided with a threaded surface below the knob, and the top end of the fixed sleeve is provided with a threaded groove matching the threaded surface. The pressing assembly is used to drive the top connecting sleeve to move on the fixed plate 1.

[0014] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0015] Firstly, in the present application, the garbage will first be sucked into the feed connecting frame by the vacuum tube, and the garbage in the feed connecting frame will fall downward in the garbage bin. The solid garbage cannot pass through the separation frame when it contacts the separation frame, so the solid garbage will naturally fall into the solid garbage placement cavity. When the vacuum tube sucks in the liquid garbage, it is necessary to first operate the pressing assembly to press down the feed connecting frame so that the feed connecting frame and the separation frame are in close contact. At this time, the discharge port of the feed connecting frame is separated from the solid garbage placement cavity. At this time, the garbage falling from the feed connecting frame will only contact the separation frame, and the liquid garbage will pass through the separation frame and enter the liquid garbage placement cavity. In this way, the liquid garbage and the solid garbage can be effectively separated, and the two can be prevented from having any contact in the garbage bin, thereby solving the problem in the prior art that water will remain in the solid garbage after the separation of the garbage in the garbage bin is completed, resulting in poor separation effect.

[0016] Secondly, in the present application, two forms of separation racks are set, the above one is a circular filter hole, and this time it is a strip filter hole. Different separation racks can be used for different usage environments. For example, when the vacuum tube inhales more fine granular garbage, the separation rack with strip filter holes can be used. The separation rack with strip filter holes is provided with a protective rack, which can protect the strip filter holes. Generally, solid or granular garbage will fall on the protective rack and fall down when falling through the bottom docking sleeve, and no granular garbage will pass through the strip filter holes. If it is a circular filter hole, it may cause blockage, so different separation racks can be used according to different usage environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 is a three-dimensional cross-sectional view of the present invention;

[0020] Figure 3 The internal structure of the trash can in the present invention is shown in FIG. Figure 1 ;

[0021] Figure 4 The internal structure of the trash can in the present invention is shown in FIG. Figure 2 ;

[0022] Figure 5 Schematic diagram of the assembly of the feed connection frame and the separation frame in the present invention Figure 1 ;

[0023] Figure 6 Schematic diagram of the assembly of the feed connection frame and the separation frame in the present invention Figure 2 ;

[0024] Figure 7 Schematic diagram of the separation frame in the present invention Figure 1 ;

[0025] Figure 8 Schematic diagram of the separation frame in the present invention Figure 2 .

[0026] Figure numerals: trash bin 1, vacuum tube 2, fixing plate 1 11, fixing plate 2 12, solid waste placement chamber 13, liquid waste placement chamber 14, discharge port 15, closure 16, discharge pipe 17, feed connecting frame 3, top connecting sleeve 31, bottom docking sleeve 32, extension plate 321, limit rod 322, spring 323, separation frame 4, docking plate 41, circular filter hole 42, shielding frame 43, strip filter hole 44, protective frame 45, pressing assembly 5, fixing sleeve 51, pressing rod 52, knob 53, threaded surface 54, threaded groove 55. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. 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 making creative work are within the scope of protection of the present invention.

[0028] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figure 1-Figure 8The embodiment of the present invention provides a solid-liquid separation vacuum cleaner with good separation effect, including a garbage bin 1 and a dust suction pipe 2, wherein a fixing plate 11 and a fixing plate 2 12 are arranged in the garbage bin 1, a feed connecting frame 3 is installed on the fixing plate 11, and a separation frame 4 is arranged on the fixing plate 2 12, and the feed connecting frame 3 corresponds vertically to the separation frame 4 up and down; one end of the dust suction pipe 2 is located in the garbage bin 1 and connected to the top of the feed connecting frame 3, and the other end of the dust suction pipe 2 is located outside the garbage bin 1; the fixing plate 1 in the garbage bin 1 is provided with a feed connecting frame 3, and the separation frame 4 is provided with a feed connecting frame 3. The space between plate one 11 and fixed plate two 12 is a solid waste placement chamber 13, and the space below fixed plate two 12 in the trash bin 1 is a liquid waste placement chamber 14. The solid waste and liquid waste falling from the feed connecting frame 3 can be separated by the separation frame 4; a pressing assembly 5 is provided at the upper end of the trash bin 1, and the working end of the pressing assembly 5 is connected to the top of the feed connecting frame 3. The feed connecting frame 3 can be moved downward on the fixed plate one 11 and docked with the separation frame 4 by the push of the pressing assembly 5.

[0030] In the present application, a separation frame 4 and a feed connection frame 3 are arranged in the garbage bin 1 to realize solid-liquid separation of garbage after entering the garbage bin 1. The garbage will first be sucked into the feed connection frame 3 by the suction pipe 2, and the garbage located in the feed connection frame 3 will fall downward in the garbage bin 1. The solid garbage cannot pass through the separation frame 4 when it contacts the separation frame 4, so the solid garbage will naturally fall into the solid garbage placement cavity 13. When the suction pipe 2 sucks liquid garbage, it is necessary to first operate the pressing component 5 to press the feed connection frame 3 downward to make the feed connection frame 3 It is in close contact with the separation frame 4, and the discharge port of the feed connecting frame 3 is separated from the solid waste placement chamber 13. At this time, the garbage falling from the feed connecting frame 3 will only contact with the separation frame 4, and the liquid garbage will pass through the separation frame 4 and enter the liquid garbage placement chamber 14. In this way, the liquid garbage and the solid garbage can be effectively separated, and there is no contact between the two in the garbage bin 1, thereby solving the problem in the prior art that after the garbage in the garbage bin 1 is separated, water will remain in the solid garbage, resulting in poor separation effect.

[0031] Preferably, a discharge port 15 is provided on the side wall of the trash bin 1, and the discharge port 15 corresponds to a solid waste placement cavity 13 provided in the trash bin 1. The trash bin 1 can discharge the solid waste inside through the discharge port 15. A closure member 16 is installed in the discharge port 15 on the trash bin 1, and the discharge port 15 can be closed by the closure member 16.

[0032] Preferably, a discharge pipe 17 is provided on the side wall of the trash bin 1, and the discharge pipe 17 corresponds to the liquid garbage placement chamber 14 provided in the trash bin 1. The trash bin 1 can discharge the solid garbage inside through the discharge pipe 17, and the discharge pipe 17 is provided with a solenoid valve for closing the pipeline.

[0033] In the present application, a discharge port 15 is provided on the trash bin 1 to discharge solid waste because solid waste is generally larger in volume. Therefore, the discharge port 15 is provided to facilitate the removal of solid waste from the trash bin 1 without causing blockage. The discharge port 15 is also convenient for staff to clean the inside of the solid waste placement cavity 13. Liquid waste is discharged through a discharge pipe 17, and a solenoid valve is provided on the discharge pipe 17 to control opening and closing.

[0034] Preferably, the feed connecting frame 3 is composed of a top connecting sleeve 31 and a bottom docking sleeve 32, the side end of the top connecting sleeve 31 is connected to the dust suction pipe 2, the top of the top connecting sleeve 31 is connected to the pressing assembly 5, and the bottom docking sleeve 32 is an open opening. The bottom docking sleeve 32 is located directly above the separation frame 4, and the bottom docking sleeve 32 is slidably set on the fixed plate 11. The bottom docking sleeve 32 is tightly connected to the separation frame 4 when moving vertically.

[0035] In the present application, the feed connecting frame 3 is composed of two parts, the upper part of which is used to connect the dust suction pipe 2 so that garbage can enter, and the upper part is also used to connect the pressing component 5 so that it can be driven by the pressing component 5 to move vertically, and the lower part is used to discharge the garbage. When the bottom docking sleeve 32 is not docked with the separation frame 4, the discharged garbage is solid garbage, so that the solid garbage will slide down from the four sides of the separation frame 4 into the solid placement cavity, and when the bottom docking sleeve 32 is docked with the separation frame 4, the open opening below the bottom docking sleeve 32 is separated from the solid garbage placement cavity 13. At this time, the liquid garbage is discharged from the bottom docking sleeve 32, and these liquid garbage will pass through the separation frame 4 into the liquid garbage placement cavity 14.

[0036] Preferably, extension plates 321 are provided on all four sides of the bottom docking sleeve 32, and each of the extension plates 321 is provided with a limiting rod 322, and the bottom end of each limiting rod 322 is arranged on a fixed plate 11, and a spring 323 is also provided around each limiting rod 322, and the bottom end of each spring 323 is located on the fixed plate 11, and the top end of each spring 323 contacts the bottom surface of an extension plate 321.

[0037] In the present application, multiple extension plates 321, limit rods 322 and springs 323 are arranged on the bottom docking sleeve 32 so that the bottom docking sleeve 32 can move smoothly when moving on the fixed plate 11, and the multiple springs 323 can drive the bottom docking sleeve 32 to reset after the pressure applied by the pressing assembly 5 to the top connecting sleeve 31 is cancelled.

[0038] Preferably, the separation frame 4 is a conical cylinder, a docking plate 41 is provided at the middle of the separation frame 4 , and a plurality of circular filter holes 42 are provided on the separation frame 4 above the docking plate 41 .

[0039] In the present application, the separation rack 4 itself is conical in shape. The conical separation rack 4 can make the garbage fall naturally along the slope when it falls from the top, so that when solid garbage falls on the separation rack 4, it can be prevented from staying on the separation rack 4. The bottom is hollow inside, and the separator is provided with a docking plate 41 for docking with the bottom docking sleeve 32. When the separation rack 4 contacts the bottom docking sleeve 32 through the docking plate 41, the upper end of the separation rack 4 will be located in the bottom docking sleeve 32, and at this time, the inside of the bottom docking sleeve 32 will be isolated from the solid garbage placement chamber 13.

[0040] Preferably, a shielding frame 43 is provided on the top of the separation frame 4.

[0041] The shielding frame 43 is located above several filter holes on the top of the separation frame 4. The shielding frame 43 is mainly used to prevent the garbage dropped from the bottom docking sleeve 32 from falling directly onto the top of the separation frame 4 and the filter holes. The shielding frame 43 allows the garbage dropped from the bottom docking sleeve 32 to fall onto the shielding frame 43 first, and then disperse around the shielding frame 43 after the garbage collides with the shielding frame 43, thereby reducing the possibility of direct contact between the solid garbage and the filter holes and preventing the filter holes from being blocked by solid garbage.

[0042] Preferably, the separation frame 4 is a conical cylinder, and a plurality of strip-shaped filter holes 44 are provided on the separation frame 4 above the docking plate 41 , and a protective frame 45 is provided above each strip-shaped filter hole 44 on the separation frame 4 .

[0043] In the present application, two forms are set for the separation frame 4, the above one is a circular filter hole 42, and this time it is a strip filter hole 44. Different separation frames 4 can be used for different usage environments. For example, when the vacuum tube 2 inhales more fine granular garbage, the separation frame 4 with strip filter hole 44 can be used. The separation frame 4 with strip filter hole 44 is provided with a protective frame 45, and the protective frame 45 can protect the strip filter hole 44. Generally, solid or granular garbage will fall on the protective frame 45 and fall down when falling through the bottom docking sleeve 32, and no granular garbage will pass through the strip filter hole 44. If it is a circular filter hole 42, it may cause blockage, so different separation frames 4 can be used according to different usage environments.

[0044] Preferably, the pressing assembly 5 includes a fixed sleeve 51 and a pressing rod 52, the fixed sleeve 51 is arranged on the top of the trash can 1, the pressing rod 52 is arranged in the fixed sleeve 51, the bottom end of the pressing rod 52 is rotatably connected to the top connecting sleeve 31, a knob 53 is provided on the top of the pressing rod 52, the top of the pressing rod 52 is located below the knob 53 and is provided with a threaded surface 54, and the top of the fixed sleeve 51 is provided with a threaded groove 55 matching the threaded surface 54.

[0045] In the present application, the fixed sleeve 51 is used to place the pressing rod 52, and the pressing rod 52 can move downward in the fixed sleeve 51. The knob 53 facilitates the operator to apply pressure to the pressing rod 52 or drive the pressing rod 52 to rotate. When the pressing rod 52 moves downward to the point where the threaded surface 54 corresponds to the threaded groove 55, the pressing rod 52 can be rotated so that the threaded surface 54 is screwed into the threaded groove 55, thereby fixing the position of the pressing rod 52.

[0046] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A solid-liquid separation vacuum cleaner with good separation effect, characterized in that: The utility model comprises a garbage bin (1) and a dust suction pipe (2), wherein a first fixing plate (11) and a second fixing plate (12) are arranged in the garbage bin (1) at intervals, a feed connection frame (3) is installed on the first fixing plate (11), a separation frame (4) is arranged on the second fixing plate (12), and the feed connection frame (3) and the separation frame (4) correspond vertically to each other in the upper and lower parts; one end of the dust suction pipe (2) is located in the garbage bin (1) and connected to the top end of the feed connection frame (3), and the other end of the dust suction pipe (2) is located outside the garbage bin (1); The space between the first fixed plate (11) and the second fixed plate (12) in the trash bin (1) is a solid waste placement chamber (13), and the space below the second fixed plate (12) in the trash bin (1) is a liquid waste placement chamber (14), and the solid waste and liquid waste falling from the feed connection frame (3) can be separated by the separation frame (4); The upper end of the trash bin (1) is provided with a pressing assembly (5), the working end of the pressing assembly (5) being connected to the top end of the feed connection frame (3), and the feed connection frame (3) can be pushed by the pressing assembly (5) to move downward on the fixing plate (11) to dock with the separation frame (4); The feed connection frame (3) is composed of a top connection sleeve (31) and a bottom docking sleeve (32); the side end of the top connection sleeve (31) is connected to the dust suction pipe (2); the top end of the top connection sleeve (31) is connected to the pressing assembly (5); the bottom docking sleeve (32) is an open opening; the bottom docking sleeve (32) is located directly above the separation frame (4); the bottom docking sleeve (32) is slidably arranged on a fixed plate (11); and the bottom docking sleeve (32) is tightly connected to the separation frame (4) when moving vertically; Extension plates (321) are provided on all four sides of the bottom docking sleeve (32), each of the extension plates (321) is provided with a limiting rod (322), the bottom end of each limiting rod (322) is arranged on the fixing plate (11), each limiting rod (322) is also provided with a spring (323) around it, the bottom end of each spring (323) is located on the fixing plate (11), and the top end of each spring (323) is in contact with the bottom surface of an extension plate (321); The separation frame (4) is a conical cylinder, a docking plate (41) is provided at the middle of the separation frame (4), and a plurality of circular filter holes (42) are provided on the separation frame (4) above the docking plate (41); The pressing assembly (5) comprises a fixed sleeve (51) and a pressing rod (52); the fixed sleeve (51) is arranged on the top of the trash bin (1); the pressing rod (52) is arranged in the fixed sleeve (51); the bottom end of the pressing rod (52) is rotatably connected to the top connecting sleeve (31); a knob (53) is arranged on the top of the pressing rod (52); a threaded surface (54) is arranged on the top of the pressing rod (52) below the knob (53); and a threaded groove (55) matching the threaded surface (54) is arranged on the top of the fixed sleeve (51).

2. A solid-liquid separation vacuum cleaner with good separation effect according to claim 1, characterized in that: A discharge port (15) is provided on the side wall of the trash bin (1), and the discharge port (15) corresponds to a solid waste placement cavity (13) provided in the trash bin (1). The trash bin (1) can discharge solid waste inside through the discharge port (15). A closure member (16) is installed in the discharge port (15) on the trash bin (1), and the discharge port (15) can be closed by the closure member (16).

3. A solid-liquid separation vacuum cleaner with good separation effect according to claim 1, characterized in that: A discharge pipe (17) is also provided on the side wall of the trash bin (1), and the discharge pipe (17) corresponds to a liquid trash placement chamber (14) provided in the trash bin (1). The trash bin (1) can discharge solid trash inside through the discharge pipe (17), and a solenoid valve for closing the pipe is provided on the discharge pipe (17).

4. A solid-liquid separation vacuum cleaner with good separation effect according to claim 1, characterized in that: A shielding frame (43) is provided on the top end of the separation frame (4).

5. A solid-liquid separation vacuum cleaner with good separation effect according to claim 1, characterized in that: The separation frame (4) is a conical cylinder, and a plurality of strip-shaped filter holes (44) are provided on the separation frame (4) above the docking plate (41), and a protective frame (45) is provided above each strip-shaped filter hole (44) on the separation frame (4).

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