Cement mill device with hot air system

Abstract

The application relates to the technical field of cement grinding, and discloses a cement grinding device with a hot air system, which comprises a base, a cement grinding body, a feeding pipe, a heating part and an adjusting part. The inside of the base is provided with a sliding opening. The cement grinding body is fixedly connected to the top of the base. The outer wall of the cement grinding body is provided with air inlets which are symmetrically arranged and are communicated with the base. The feeding pipe is in communication with the top of the cement grinding body. The heating part is arranged on the top of the base. The adjusting part is arranged on the top of the base. The half-circular blocking disc at the output end of the driving motor is driven to rotate, so that the half-circular blocking disc intermittently controls the hot air transmission of the air blower. Then, the connecting opening is matched with the L-shaped clamping rod by rotating the rotating ring, one end of the transmission hose is quickly removed, the arc-shaped blocking disc is rotated by means of the handheld stirring groove, the gap between the arc-shaped blocking disc and the half-circular blocking disc is adjusted, and the transmission time of the air blower is adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cement grinding, in particular to a cement grinding device with a hot air system. BACKGROUND

[0002] The cement grinding device is a key equipment for grinding materials after crushing, and is widely used in the production of cement, silicate products, new building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, and glass ceramics; the cement grinding device is mainly used for dry or wet grinding of various ores and other grindable materials, and is an important part of controlling the quality of cement.

[0003] At present, the publication number is CN113663804A, a cement grinding device is disclosed, which comprises a machine case, a driven grinding roller and a driving grinding roller; a discharge port is arranged at the lower part of the machine case, and the machine case and the discharge port are connected by welding; the driven grinding roller and the driving grinding roller are arranged at the left and right sides of the lower part of the machine case, and the driven grinding roller and the driving grinding roller are connected with the machine case through bearings; a material tray is arranged at the middle position of the machine case, and the material tray and the machine case are connected by welding; a material groove is arranged inside the material tray, and the material groove and the material tray are of an integrated structure. Through the improvement in structure, the device has the functions of grinding and grinding operation, greatly improves the grinding quality, and fully improves the practical value of the device, thereby effectively solving the problems and deficiencies of the present application.

[0004] The cement grinding device has the problems of not drying the powder material with hot air during the grinding process, the presence of moisture in the powder material, the transmission of the powder material in the machine body, the increase of humidity in the machine body due to the presence of part of the moisture, the corrosion and wear of the machine body, and the reduction of the service life of the machine body. SUMMARY

[0005] The present application provides a cement grinding device with a hot air system to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a cement grinding device with a hot air system, comprising a base, a sliding opening is formed in the inside of the base; a cement grinding body is fixedly connected to the top of the base, an air inlet is formed in the outer wall of the cement grinding body, the air inlets are symmetrically arranged, and the cement grinding body is in communication with the base; a feeding pipe is in communication with the top of the cement grinding body; a heating part is arranged on the top of the base; an adjusting part is arranged on the top of the base, and the adjusting part is located on the inside of the heating part; a material distributing part is arranged in the inside of the base.

[0007] Preferably, the heating part comprises: a hopper fixedly connected to the inner wall of the cement mill body; and a fixed seat fixedly connected to the top of the base, the fixed seat being symmetrically arranged, and the hopper being arranged to achieve the effect of rapid discharging.

[0008] Preferably, the inner wall of the hopper is provided with an electric valve, the bottom of the hopper is fixedly connected with electric telescopic rods arranged at equal intervals in the circumference, the bottom end of the electric telescopic rods is fixedly connected with an annular scraper, the annular scraper is matched with the inner wall of the cement mill body, the top of the fixed seat is fixedly connected with a blower, the top of the fixed seat is fixedly connected with a heating ring matched with the output end of the blower, and the annular scraper is arranged to achieve the effect of scraping and cleaning the inner wall of the cement mill body.

[0009] Preferably, the adjusting part comprises: a fixed frame fixedly connected to the top of the base, the fixed frame being symmetrically arranged; and a transmission hose communicated with the outer wall of the cement mill body, the transmission hose being symmetrically arranged, and the transmission hose being arranged to achieve the effect of freely controlling the placement and modeling.

[0010] Preferably, one side of the fixed frame is fixedly connected with L-shaped clamping rods arranged symmetrically, the fixed frame is communicated with the output end of the blower, the fixed frame is communicated with one end of the transmission hose, the outer wall of the transmission hose is rotatably connected with a rotating ring, the outer wall of the rotating ring is provided with connecting ports arranged symmetrically, the connecting ports are matched with the L-shaped clamping rods, the inside of the rotating ring is provided with a sliding groove one, a triangular clamping block is slidably connected in the sliding groove one, a spring one is arranged between the triangular clamping block and the sliding groove one, one end of the spring one is fixedly connected to one end of the triangular clamping block, and the other end of the spring one is fixedly connected to the inner wall of the sliding groove one, and the L-shaped clamping rods are arranged to achieve the effect of clamping and fixing the rotating ring.

[0011] Preferably, the inside of the fixed frame is rotatably connected with a semicircular blocking disc through a bearing seat, the inside of the semicircular blocking disc is provided with a rotating port, the inside of the semicircular blocking disc is fixedly connected with a blocking block, the rotating port is rotatably connected with an arc-shaped blocking disc matched with the blocking block, one side of the arc-shaped blocking disc is provided with a pulling groove arranged at equal intervals in the circumference, the inside of the semicircular blocking disc is threadedly connected with a threaded rod, one end of the threaded rod is matched with the arc-shaped blocking disc, one side of the fixed frame is fixedly connected with a motor, the output end of the motor extends inwardly through the fixed frame, and the output end of the motor is fixedly connected to one side of the semicircular blocking disc, and the semicircular blocking disc and the arc-shaped blocking disc are arranged to achieve the effect of adjusting the hot air transmission time of the blower.

[0012] Preferably, the distribution site comprises: a collection box slidingly connected inside the slide opening, one side of the collection box being provided with a discharge port; and a handle fixedly connected to one side of the collection box. The collection box achieves the effect of collecting qualified powder.

[0013] Preferably, the inside of the discharge port is provided with an electric door plate, the inner wall of the collection box is fixedly connected with a fixed rail, the fixed rail is symmetrically arranged, the top of the fixed rail is slidingly connected with a sieve plate, an elastic cloth is arranged between the sieve plate and the collection box, one end of the elastic cloth is clamped and connected to the top of the sieve plate, the other end of the elastic cloth is fixedly connected to the inner wall of the collection box, the inner wall of the collection box is fixedly connected with an electric telescopic column, the output end of the electric telescopic column is fixedly connected with a clamping block, and the clamping block is clamped and connected with the sieve plate. The arrangement of the elastic cloth achieves the effect of always blocking the overflow of the powder during the swinging of the sieve plate.

[0014] The application provides a cement grinding device with a hot air system. The device has the following advantages:

[0015] (1) The finished powder falls to the top of the discharge hopper, and then the electric valve is opened, so that the powder slides down along the inner wall of the discharge hopper, and then the electric valve is closed, the air blower is driven, and the air is blown into the inside of the cement grinding body, so that the air is heated under the action of the heating ring, thereby achieving the effect of hot air drying the powder, and then the electric telescopic rod is driven, so that the annular scraper slides along the track of the inner wall of the cement grinding body, thereby achieving the effect of scraping and cleaning the inner wall of the cement grinding body.

[0016] (2) The motor is driven, the semi-circular blocking disc at the output end of the motor is rotated, the semi-circular blocking disc intermittently controls the transmission of hot air by the air blower, then the connecting port is matched with the L-shaped clamping rod by rotating the rotating ring, thereby quickly removing one end of the transmission hose, then the arc-shaped blocking disc is rotated by the handheld slot, and the gap between the arc-shaped blocking disc and the semi-circular blocking disc is adjusted, thereby achieving the effect of adjusting the transmission time of the air blower.

[0017] (3) The sieve plate is placed on the top of the fixed rail, so that the sieve plate is clamped and connected with the clamping block, and one end of the elastic cloth is clamped and connected with the top of the sieve plate, then the electric telescopic column is driven, so that the electric telescopic column drives the sieve plate to swing, thereby achieving the effect of screening and filtering the powder, so that the qualified powder falls into the inside of the collection box, and the unqualified powder stays in the inside of the sieve plate, thereby achieving the effect of distributing and collecting the powder. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure shows the structure of the application;

[0019] Figure 2 The figure shows the front view of the application;

[0020] Figure 3 Heating part view of the present application;

[0021] Figure 4 Adjusting part view of the present application;

[0022] Figure 5 Detail view of the adjusting part of the present application;

[0023] Figure 6 Distributing part view of the present application;

[0024] Figure 7 Detail view of the distributing part of the present application

[0025] In the figure: 1 base, 2 cement mill body, 3 feeding pipe, 4 heating part, 5 adjusting part, 6 distributing part;

[0026] 411 discharging hopper, 412 electric valve, 413 electric telescopic rod, 414 annular scraper, 415 fixed seat, 416 air blower, 417 heating ring;

[0027] 511 fixed frame, 512 transmission hose, 513 rotating ring, 514 triangular clamping block, 515 spring I, 516 L-shaped clamping rod, 517 semicircular blocking disc, 518 blocking block, 519 arc-shaped blocking disc, 520 threaded rod, 521 motor;

[0028] 611 collecting box, 612 handle, 613 electric door plate, 614 fixed rail, 615 electric telescopic column, 616 clamping block, 617 sieve plate, 618 elastic cloth blocking. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] Examples of the described embodiments are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment 1

[0033] A preferred embodiment of a cement grinding device with hot air system provided by the present application is shown in the figure Figures 1-7 The figure shows a cement grinding device with hot air system, which comprises a base 1, a sliding opening is formed in the inside of the base 1; a cement grinding body 2 is fixedly connected to the top of the base 1, air inlets are formed in the outer wall of the cement grinding body 2, the air inlets are symmetrically arranged, the cement grinding body 2 is in communication with the base 1; a feeding pipe 3 is in communication with the top of the cement grinding body 2; a heating part 4 is arranged on the top of the base 1; an adjusting part 5 is arranged on the top of the base 1, the adjusting part 5 is located on the inside of the heating part 4; a distributing part 6 is arranged in the inside of the base 1.

[0034] The heating part 4 comprises: a lower hopper 411 fixedly connected to the inner wall of the cement grinding body 2; a fixed seat 415 fixedly connected to the top of the base 1, the fixed seat 415 is symmetrically arranged.

[0035] The inner wall of the lower hopper 411 is provided with an electric valve 412, the bottom of the lower hopper 411 is fixedly connected with an electric telescopic rod 413, the electric telescopic rod 413 is circumferentially and equidistantly arranged, the bottom end of the electric telescopic rod 413 is fixedly connected with an annular scraper 414, the annular scraper 414 is matched with the inner wall of the cement grinding body 2, the top of the fixed seat 415 is fixedly connected with a blower 416, the top of the fixed seat 415 is fixedly connected with a heating ring 417, the heating ring 417 is matched with the output end of the blower 416.

[0036] In this embodiment, the finished powder is dropped to the top of the lower hopper 411, then the electric valve 412 is opened, the powder slides down along the inner wall of the lower hopper 411, then the electric valve 412 is closed, the blower 416 is driven, the wind is blown to the inside of the cement grinding body 2, so that the wind is heated under the action of the heating ring 417, so as to achieve the effect of hot air drying the powder, then the electric telescopic rod 413 is driven, the annular scraper 414 slides along the track of the inner wall of the cement grinding body 2, so as to clean the inner wall of the cement grinding body 2.

[0037] Embodiment 2

[0038] Please refer toFigures 1-7 And on the basis of embodiment 1, further get: the adjusting part 5 includes: the fixed frame 511 is fixedly connected at the top of the base 1, the fixed frame 511 is symmetrically arranged; the transmission hose 512 is communicated and arranged on the outer wall of the cement mill body 2, the transmission hose 512 is symmetrically arranged.

[0039] One side of the fixed frame 511 is fixedly connected with an L-shaped clamping rod 516, the L-shaped clamping rod 516 is symmetrically arranged, the fixed frame 511 is communicated with the output end of the air blower 416, the fixed frame 511 is communicated with one end of the transmission hose 512, the outer wall of the transmission hose 512 is rotatably connected with a rotating ring 513, the outer wall of the rotating ring 513 is provided with a connecting port, the connecting port is symmetrically arranged, the connecting port is matched with the L-shaped clamping rod 516, the inside of the rotating ring 513 is provided with a sliding groove one, a triangular clamping block 514 is slidably connected in the sliding groove one, a spring one 515 is arranged between the triangular clamping block 514 and the sliding groove one, one end of the spring one 515 is fixedly connected with one end of the triangular clamping block 514, the other end of the spring one 515 is fixedly connected with the inner wall of the sliding groove one.

[0040] The inside of the fixed frame 511 is rotatably connected with a semicircular blocking disc 517 through a bearing seat, the inside of the semicircular blocking disc 517 is provided with a rotating port, the inside of the semicircular blocking disc 517 is fixedly connected with a blocking block 518, an arc-shaped blocking disc 519 is rotatably connected in the rotating port, the arc-shaped blocking disc 519 is matched with the blocking block 518, a pulling groove is formed in one side of the arc-shaped blocking disc 519, the pulling grooves are circumferentially equidistantly arranged, a threaded rod 520 is threadedly connected in the inside of the semicircular blocking disc 517, one end of the threaded rod 520 is matched with the arc-shaped blocking disc 519, a motor 521 is fixedly connected on one side of the fixed frame 511, the output end of the motor 521 extends inwardly through the fixed frame 511, the output end of the motor 521 is fixedly connected on one side of the semicircular blocking disc 517.

[0041] In the embodiment, the half-circular blocking disc 517 at the output end of the motor 521 is rotated by driving the motor 521, so that the half-circular blocking disc 517 intermittently controls the hot air transmission of the air blower 416, and then the connecting port is matched with the L-shaped clamping rod 516 by rotating the rotating ring 513, so that one end of the transmission hose 512 is quickly removed, and then the gap between the arc-shaped blocking disc 519 and the half-circular blocking disc 517 is adjusted by rotating the arc-shaped blocking disc 519 through the hand-held slot, so that the transmission time of the air blower 416 is adjusted, and then the arc-shaped blocking disc 519 is fixed in position by rotating the threaded rod 520, and vice versa. After the rotating ring 513 is placed on one side of the fixed frame 511, the rotating ring 513 is rotated, so that the rotating ring 513 drives the triangular clamping block 514 to rotate, so that the L-shaped clamping rod 516 extrudes the triangular clamping block 514, and the triangular clamping block 514 is retracted to the inside of the rotating ring 513. After the L-shaped clamping rod 516 passes through the rotating ring 513, the triangular clamping block 514 is ejected under the action of the spring 515, so that the effect of fixing the rotating ring 513 is achieved, and the transmission hose 512 is connected with the fixed frame 511.

[0042] Embodiment 3

[0043] Please refer to Figures 1-7 And on the basis of embodiments 1 and 2, it is further obtained that the material distribution part 6 comprises a collection box 611 which is slidingly connected inside the sliding port, and a handle 612 which is fixedly connected to one side of the collection box 611.

[0044] The inside of the discharge port is provided with an electric door plate 613, the inner wall of the collection box 611 is fixedly connected with a fixed rail 614, the fixed rail 614 is symmetrically arranged, the top of the fixed rail 614 is slidingly connected with a sieve plate 617, and the sieve plate 617 and the collection box 611 are provided with an elastic cloth blocking piece 618, one end of the elastic cloth blocking piece 618 is clamped and connected to the top of the sieve plate 617, the other end of the elastic cloth blocking piece 618 is fixedly connected to the inner wall of the collection box 611, the inner wall of the collection box 611 is fixedly connected with an electric telescopic column 615, the output end of the electric telescopic column 615 is fixedly connected with a clamping block 616, and the clamping block 616 is clamped and connected with the sieve plate 617.

[0045] In the embodiment, the sieve plate 617 is placed on the top of the fixed rail 614, so that the sieve plate 617 is clamped and connected with the clamping block 616, and one end of the elastic cloth blocking piece 618 is clamped and connected with the top of the sieve plate 617. Then the electric telescopic column 615 is driven to swing the sieve plate 617, so that the effect of screening and filtering the powder is achieved, so that the qualified powder falls into the inside of the collection box 611, and the unqualified powder stays in the inside of the sieve plate 617, achieving the purpose of distributing and collecting the powder.

[0046] In use, first, the finished powder falls to the top of the hopper 411, then open the electric valve 412, the powder along the inner wall of the hopper 411 down, then close the electric valve 412, drive the blower 416, the wind blows to the inside of the cement mill body 2, so that the heating ring 417 under the action of the wind, so as to achieve the effect of hot air drying powder, then drive the electric telescopic rod 413, the annular scraper 414 along the track of the inner wall of the cement mill body 2 sliding, so as to clean the purpose of the inner wall of the cement mill body 2; second, drive the motor 521, the motor 521 output end of the semicircular blocking disc 517 rotation, so that the semicircular blocking disc 517 intermittent control blower 416 transmission hot air, then rotate the rotating ring 513, the connecting port and L type card bar 516 fit, so as to quickly remove the transmission hose 512 of one end, then through the hand dial slot rotation arc blocking disc 519, adjust the gap between the arc blocking disc 519 and semicircular blocking disc 517, so as to adjust the transmission time of the blower 416 effect, then rotate the threaded rod 520, the arc blocking disc 519 position fixed, vice versa, the rotating ring 513 placed in one side of the fixed frame 511, rotating the rotating ring 513, so that the rotating ring 513 driven triangular clamp block 514 rotation, so that the L type card bar 516 on the triangular clamp block 514 extrusion, the triangular clamp block 514 retraction to the inside of the rotating ring 513, when the L type card bar 516 after the rotating ring 513, in the action of the spring 515, the triangular clamp block 514 pop out, so as to achieve the effect of fixed rotating ring 513, the transmission hose 512 and fixed frame 511 connected; finally, the sieve plate 617 placed on the top of the fixed rail 614, so that the sieve plate 617 and clamp block 616 carding connection, the elastic cloth 618 one end and sieve plate 617 top carding connection, then drive the electric telescopic column 615, the electric telescopic column 615 driven sieve plate 617 swing, so as to achieve the effect of screening and filtering powder, so that the qualified powder falls to the inside of the collection box 611, unqualified powder stays to the inside of the sieve plate 617, to achieve the purpose of powder distribution collection.

[0047] It should be noted that in this document, the terms "first", "second", and the like, merely distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent ones. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cement grinding device with hot air system comprising a base (1), characterized in that: The inside of the base (1) is provided with a sliding opening; The cement grinder body (2) is fixedly connected to the top of the base (1), the outer wall of the cement grinder body (2) is provided with air inlets, the air inlets are symmetrically arranged, and the cement grinder body (2) is in communication with the base (1); The feeding pipe (3) is in communication with the top of the cement grinder body (2); The heating part (4) is arranged on the top of the base (1); The adjusting part (5) is arranged on the top of the base (1), and the adjusting part (5) is located on the inner side of the heating part (4); The distribution part (6) is arranged in the base (1); The adjusting part (5) comprises: The fixed frame (511) is fixedly connected to the top of the base (1), and the fixed frame (511) is symmetrically arranged; The transmission hose (512) is in communication with the outer wall of the cement grinder body (2), and the transmission hose (512) is symmetrically arranged; One side of the fixed frame (511) is fixedly connected with an L-shaped clamping rod (516), the L-shaped clamping rod (516) is symmetrically arranged, the fixed frame (511) is in communication with the output end of the air blower (416), one end of the fixed frame (511) is in communication with the transmission hose (512), the outer wall of the transmission hose (512) is rotatably connected with a rotating ring (513), the outer wall of the rotating ring (513) is provided with a connecting opening, the connecting opening is symmetrically arranged, the connecting opening is matched with the L-shaped clamping rod (516), the inside of the rotating ring (513) is provided with a sliding groove one, the sliding groove one is slidably connected with a triangular clamping block (514), a spring one (515) is arranged between the triangular clamping block (514) and the sliding groove one, one end of the spring one (515) is fixedly connected to one end of the triangular clamping block (514), and the other end of the spring one (515) is fixedly connected to the inner wall of the sliding groove one; The inside of the fixed frame (511) is rotatably connected with a semicircular blocking disc (517) through a bearing seat, the inside of the semicircular blocking disc (517) is provided with a rotating opening, the inside of the semicircular blocking disc (517) is fixedly connected with a blocking block (518), the rotating opening is rotatably connected with an arc-shaped blocking disc (519), the arc-shaped blocking disc (519) is matched with the blocking block (518), one side of the arc-shaped blocking disc (519) is provided with a rotating groove, the rotating grooves are circumferentially equidistantly arranged, the inside of the semicircular blocking disc (517) is threadedly connected with a threaded rod (520), one end of the threaded rod (520) is matched with the arc-shaped blocking disc (519), one side of the fixed frame (511) is fixedly connected with a motor (521), the output end of the motor (521) extends inwardly through the fixed frame (511), and the output end of the motor (521) is fixedly connected to one side of the semicircular blocking disc (517).

2. A cement grinding device with a hot air system as claimed in claim 1, characterized in that: The heating part (4) comprises: The lower hopper (411) is fixedly connected to the inner wall of the cement grinder body (2); The fixed seat (415) is fixedly connected to the top of the base (1), and the fixed seat (415) is symmetrically arranged.

3. A cement grinding mill apparatus having a hot air system as claimed in claim 2, wherein: The inner wall of the lower hopper (411) is provided with an electric valve (412), the bottom of the lower hopper (411) is fixedly connected with electric telescopic rods (413) which are circumferentially and equidistantly arranged, the bottom ends of the electric telescopic rods (413) are fixedly connected with annular scrapers (414) which are matched with the inner wall of the cement mill body (2), the top of the fixed seat (415) is fixedly connected with a blower (416), the top of the fixed seat (415) is fixedly connected with a heating ring (417) which is matched with the output end of the blower (416).

4. A cement grinding mill apparatus having a hot air system as claimed in claim 1, wherein: The distribution part (6) comprises: A collecting box (611) is slidingly connected in the inner part of the sliding opening, one side of the collecting box (611) is provided with a discharge opening; A handle (612) is fixedly connected to one side of the collecting box (611).

5. A cement grinding mill apparatus having a hot air system as claimed in claim 4 wherein: An electric door plate (613) is mounted in the discharge opening, a fixed rail (614) is fixedly connected to the inner wall of the collecting box (611), the fixed rail (614) is symmetrically arranged, a sieve plate (617) is slidingly connected to the top of the fixed rail (614), an elastic cloth stopper (618) is arranged between the sieve plate (617) and the collecting box (611), one end of the elastic cloth stopper (618) is clampedly connected to the top of the sieve plate (617), the other end of the elastic cloth stopper (618) is fixedly connected to the inner wall of the collecting box (611), an electric telescopic column (615) is fixedly connected to the inner wall of the collecting box (611), a clamping block (616) is fixedly connected to the output end of the electric telescopic column (615), and the clamping block (616) is clampedly connected with the sieve plate (617). ​

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