CN217726159U - Automatic coal gangue sorting device - Google Patents

Abstract

The utility model relates to an automatic separation technical field specifically is a gangue automatic separation device, include: a first housing; the feeding pipe is connected to the outer surface of the upper end of the first shell in a penetrating way and is close to the left edge; the discharge port penetrates through the outer surface of the right side of the first shell and is arranged close to the edge of the lower end; the conveying belt is arranged on the outer surface of the right side of the first shell and close to the edge of the lower end of the first shell; an installation platform and a vision collector. The utility model discloses a set up the dusting mechanism, the in-process of coal cinder and gangue unloading is got rid of the dust that contains in to coal cinder and gangue mixture, can produce the coal ash that flies upward in a large number in avoiding the letter sorting process, long-time deposition can cause the reduction of equipment identification precision, the problem of interference is caused to the letter sorting of coal cinder, the coal ash of avoiding simultaneously flying upward also can produce the problem of influence to environment and staff on every side, improve gangue automatic separation device's working effect.

Description

Automatic coal gangue sorting device

Technical Field

The utility model relates to an automatic separation technical field specifically is a gangue automatic separation device.

Background

The coal gangue is solid waste discharged in the coal mining and coal washing processes, the separation of the coal gangue is a necessary process in the coal mine production process, the separation of the coal gangue can reduce the washing cost, and the coal grade of a finished product is improved;

at present, most coal plants still adopt the artifical mode of looking examining to carry out the coal cinder letter sorting, the speed and the precision of letter sorting are all unsatisfactory, thereby also have some coal plants to utilize visual technology to realize carrying out the automatic letter sorting example to the discernment of coal cinder and gangue, adopt high definition digtal camera as vision collection device among the prior art though can be to the gangue, the coal cinder carries out the analysis, but can produce the coal ash that flies upward in a large number in the letter sorting process, long-time deposition can cause the reduction of equipment identification precision, cause the interference to the letter sorting of coal cinder, the coal ash that flies upward simultaneously also can produce the influence to surrounding environment and staff.

Therefore, an automatic coal gangue sorting device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gangue automatic separation device to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic coal gangue sorting device comprises: a first housing; the feeding pipe is connected to the outer surface of the upper end of the first shell in a penetrating way and is close to the left edge; the discharge port penetrates through the outer surface of the right side of the first shell and is close to the edge of the lower end; the conveying belt is arranged on the outer surface of the right side of the first shell and close to the edge of the lower end of the first shell; the mounting tables are arranged at two sides of the side surface of the conveying belt, and the vision collectors are fixedly mounted on the outer surface of the lower end of the mounting tables and close to the middle position; and a dust removal mechanism; the inside of first casing is close to the lower extreme position of inlet pipe for clear up the dust that contains in the gangue.

Preferably, the dust removing mechanism comprises a motor fixedly mounted on the outer surface of the left side of the first shell and close to the upper end position, a rotating rod is fixedly mounted on an output shaft of the motor, a first extrusion rod which is uniformly distributed is fixedly mounted on the outer surface of one side of the rotating rod, a first mounting groove is formed in the inner surface of the right side of the first shell and close to the upper end position of the rotating rod, a connecting rod is fixedly mounted on the inner top surface of the first mounting groove and close to the middle position, a first connecting block is movably connected to the inner surface of the connecting rod, a second extrusion rod is fixedly mounted on the outer surface of the lower end of the connecting rod and close to the edge position of the right side, the second extrusion rod and the first extrusion rod are in contact with each other, a second connecting block is hinged to the inner surface of the left side of the first shell and close to the edge position of the upper end, a filter plate is connected to the outer surface of the right end of the second connecting block, a feed opening is formed in the outer surface of the upper end of the filter plate and close to the edge position of the right side, a mounting block is fixedly mounted on the outer surface of the upper end of the first shell and close to the feed pipe, a mounting block, a telescopic rod is fixedly mounted on the outer surface of the left side of the mounting block and close to the middle position, a telescopic rod, a third connecting block is fixedly mounted on the outer surface of the left side of the feed pipe, a telescopic rod, a third connecting block, and a third connecting block extends to the feed pipe, and extends to the feed pipe.

Preferably, the right end of the third connecting block is arranged in an inclined plane.

Preferably, the inner surface of the first mounting groove is fixedly provided with a first spring close to the outer side of the connecting rod, and the lower end of the first spring is fixedly connected with the first connecting block.

Preferably, the left side internal surface of first casing is close to intermediate position fixed mounting and has first swash plate, the one end of first swash plate is located the left side position of feed opening, the upper end position that the left side internal surface of first casing is close to first swash plate has run through and has seted up the connector, the right side fixed mounting that the left side surface of first casing is close to the connector has the second casing, the left side surface of second casing is close to lower extreme border position and is provided with the ash hole.

Preferably, a second inclined plate is fixedly mounted on one side, close to the ash outlet, of the inner bottom surface of the second shell.

Preferably, a first connecting groove is formed in the outer surface of one side of the first connecting block, close to the middle position, a second spring is fixedly mounted on the inner surface of the first connecting groove, close to the middle position, and a second connecting groove is formed in the outer surface of one side of the second connecting block, close to the middle position.

Preferably, a blanking plate is fixedly mounted on the inner surface of the right side of the first shell and close to the lower end of the discharge hole.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up the dusting mechanism, the in-process of coal cinder and gangue unloading is got rid of the dust that contains in to coal cinder and gangue mixture, can produce the coal ash that flies upward in a large number in avoiding the letter sorting process, long-time deposition can cause the reduction of equipment identification precision, the problem of interference is caused to the letter sorting of coal cinder, the coal ash of avoiding simultaneously flying upward also can produce the problem of influence to environment and staff on every side, improve gangue automatic separation device's working effect.

Drawings

FIG. 1 is a schematic view of the complete mechanism structure of the present invention;

FIG. 2 is a front view of the cross-sectional structure of the present invention;

fig. 3 is an enlarged structural view of the present invention at C in fig. 2;

FIG. 4 is a cross-sectional view of the joint between the first and second extruding rods;

fig. 5 is an enlarged structural view of the utility model at the position B in fig. 2;

fig. 6 is an enlarged structural view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a first housing; 2. a feed pipe; 3. a dust removing mechanism; 31. a motor; 32. a rotating rod; 33. a first extrusion stem; 34. a first mounting groove; 35. a connecting rod; 36. a first connection block; 37. a second extrusion stem; 38. a second connecting block; 39. a filter plate; 310. a feeding port; 311. mounting a block; 312. a telescopic rod; 313. a third connecting block; 314. a first spring; 315. a first swash plate; 316. a connection port; 317. a second housing; 318. a second swash plate; 319. an ash outlet; 3110. a first connecting groove; 3111. a second spring; 3112. a second connecting groove; 3113. a blanking plate; 4. a discharge port; 5. a conveyor belt; 6. an installation table; 7. and (4) a vision collector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the utility model provides a technical solution of a gangue automatic sorting device:

an automatic coal gangue sorting device, as shown in fig. 1 to 6, comprises: a first housing 1; the feeding pipe 2 is connected to the outer surface of the upper end of the first shell 1 in a penetrating way and is close to the left edge; the discharge port 4 penetrates through the outer surface of the right side of the first shell 1 and is arranged close to the edge of the lower end; the conveyor belt 5 is arranged on the outer surface of the right side of the first shell 1 and close to the edge of the lower end; the mounting table 6 is arranged at two sides of the side surface of the conveyor belt 5, and the vision collector 7 is fixedly mounted on the outer surface of the lower end of the mounting table 6 and close to the middle position; and a dust removing mechanism 3; the inside of the first shell 1 is close to the lower end position of the feeding pipe 2 and is used for cleaning dust contained in coal gangue.

At present, most coal plants still adopt the artifical mode of looking examining to carry out the coal cinder letter sorting, the speed and the precision of letter sorting are all unsatisfactory, thereby also have some coal plants to utilize visual technology to realize carrying out the automatic letter sorting example to the discernment of coal cinder and gangue, adopt high definition digtal camera as vision collection device among the prior art though can be to the gangue, the coal cinder carries out the analysis, but can produce a large amount of coal ashes that fly upward in the letter sorting process, long-time deposition can cause the reduction of equipment identification precision, cause the interference to the letter sorting of coal cinder, the coal ash that flies upward simultaneously also can exert an influence to surrounding environment and staff, the utility model discloses a set up dust removal mechanism 3, get rid of the dust that contains in coal cinder and the gangue mixture at the in-process of coal cinder and gangue unloading, avoid the letter sorting in-process can produce a large amount of coal ashes that fly upward, long-time deposition can cause the reduction of equipment identification precision, cause the problem of interference to the letter sorting of coal cinder, the coal ash that avoids flying upward simultaneously also can produce the problem of influence to surrounding environment and staff, improves the work effect of gangue automatic sorting device.

As an embodiment of the present invention, as shown in fig. 1 to 6, the ash removing mechanism 3 includes a motor 31 fixedly mounted on the left outer surface of the first housing 1 near the upper end position, an output shaft of the motor 31 is fixedly mounted with a rotating rod 32, one side outer surface of the rotating rod 32 is fixedly mounted with a first extruding rod 33 uniformly distributed, the right inner surface of the first housing 1 near the upper end position of the rotating rod 32 has a first mounting groove 34, the inner top surface of the first mounting groove 34 near the middle position is fixedly mounted with a connecting rod 35, the inner surface of the connecting rod 35 is movably connected with a first connecting block 36, the lower outer surface of the connecting rod 35 near the right edge position is fixedly mounted with a second extruding rod 37, the second extruding rod 37 and the first extruding rod 33 are in contact with each other, the left inner surface of the first housing 1 near the upper end edge position is connected with a second connecting block 38 through a hinge, the right outer surface of the second connecting block 38 is connected with a filter 39, the upper outer surface of the filter 39 near the right edge position has a feeding port 310, one end of the first housing 39 near the first connecting block 36 is connected with a third connecting block 311 near the upper end of the middle position of the first housing 1, and the first connecting block 312 near the right outer surface of the feeding pipe 312 is mounted with a third connecting block 311, and a connecting block 312 is mounted with a third connecting block 311.

When the coal gangue conveyor is in operation, the ash removing mechanism 3 is arranged, when coal gangue falls onto the filter plate 39 through the feeding pipe 2, the motor 31 is opened through the control system, the motor 31 drives the rotating rod 32 to rotate, in the rotating process of the rotating rod 32, because the front ends of the first extrusion rod 33 and the second extrusion rod 37 are both arranged into a ring shape, when the rotating first extrusion rod 33 contacts with the second extrusion rod 37, the rotating force enables the first extrusion rod 33 and the second extrusion rod 37 to generate yielding force, the yielding force enables the second extrusion rod 37 to move towards the direction far away from the first extrusion rod 33, and the process is repeated, the first connecting block 36 shakes up and down under the action of the rotating yielding force of the rotating rod 32, and the filter plate 39 shakes up and down, because the second connecting block 38 is hinged with the first shell 1 through a hinge, and one end of the filter plate 39 far away from the first connecting block 36 can be matched with one end near the first connecting block 36 to move up and down, the filtering effect of the dust contained in the mixture of the coal briquette and the coal gangue and filtered by the filter plate 39 is ensured, by arranging the telescopic rod 312, when feeding is carried out, the length of the third connecting block 313 in the feeding pipe 2 can be controlled by controlling the telescopic rod 312, the size of a material port formed between the third connecting block 313 and the feeding pipe 2 is controlled, so that the amount of raw materials entering the first shell 1 from the feeding pipe 2 in unit time can be controlled, the problem that the filtering effect of the filter plate 39 is influenced due to the fact that the amount of the mixture of the coal briquette and the coal gangue on the filter plate 39 is too large because of too large feeding amount is solved, the dust contained in the mixture of the coal briquette and the coal gangue is removed in the process of feeding the coal briquette and the coal gangue, a large amount of flying coal ash generated in the sorting process is avoided, and long-time dust accumulation can cause the reduction of the equipment identification precision, the problem of interference is caused to the sorting of the coal briquettes, the problem that flying coal ash can influence the surrounding environment and workers is avoided, and the working effect of the automatic coal gangue sorting device is improved.

As an embodiment of the present invention, as shown in fig. 6, the right end of the third connecting block 313 is disposed in an inclined plane.

During operation, the utility model discloses a right-hand member that sets up third connecting block 313 is the inclined plane setting, guarantees that the raw materials can be better from third connecting block 313 and advance inside the material mouth that forms gets into first casing 1 between the inlet pipe 2.

As an embodiment of the present invention, as shown in fig. 3, a first spring 314 is fixedly mounted on the inner surface of the first mounting groove 34 near the outer side of the connecting rod 35, and the lower end of the first spring 314 is fixedly connected to the first connecting block 36.

The during operation, the utility model discloses an outside fixed mounting that the internal surface that sets up first mounting groove 34 is close to connecting rod 35 has first spring 314, the turning force makes and produces the abduction power between first extrusion stem 33 and the second extrusion stem 37, the abduction power makes second extrusion stem 37 remove to the direction of keeping away from first extrusion stem 33, thereby second extrusion stem 37 drives first connecting block 36 and overcomes first spring 314's elasticity and removes to the direction of keeping away from first extrusion stem 33 on first mounting groove 34, when first extrusion stem 33 and second extrusion stem 37 contactless, elastic deformation is resumeed to first spring 314, drive first extrusion stem 33 and remove to the direction of being close to bull stick 32, shake about the effect of the first spring 314 of first connecting block 36 is under the effect of the elasticity, further improve the filter 39's filter effect.

As an embodiment of the present invention, as shown in fig. 2, the left inner surface of the first casing 1 is close to the middle position and fixedly mounted with a first inclined plate 315, one end of the first inclined plate 315 is located at the left side position of the feed opening 310, the upper end position of the left inner surface of the first casing 1 close to the first inclined plate 315 has a connection port 316 through, the right outer surface of the left side of the first casing 1 is close to the connection port 316 and fixedly mounted with a second casing 317, and the left outer surface of the second casing 317 is close to the lower end edge position and is provided with an ash outlet 319.

The during operation, the utility model discloses a set up first swash plate 315, filterable dust gets into the inside of second casing 317 through first swash plate 315, connector 316, and the staff can handle the inside dust of second casing 317 through ash hole 319.

As an embodiment of the present invention, as shown in fig. 2, a second inclined plate 318 is fixedly installed on one side of the inner bottom surface of the second housing 317, which is close to the ash outlet 319.

During operation, the utility model discloses a second swash plate 318, because the slope of second swash plate 318 sets up makes things convenient for the outside roll-off of dust, further makes things convenient for the inside dust of second casing 317 to discharge through ash hole 319.

As an embodiment of the present invention, as shown in fig. 3 and 5, a first connection groove 3110 is disposed on a side outer surface of the first connection block 36 near the middle position, a second spring 3111 is fixedly mounted on an inner surface of the first connection groove 3110 near the middle position, and a second connection groove 3112 is disposed on a side outer surface of the second connection block 38 near the middle position.

The during operation, the utility model discloses a set up first connecting groove 3110, when filter 39 needs to be dismantled, open the change mouth of 1 upper end position of first casing through the manpower earlier, rethread manpower presses down filter 39, the pressing force makes filter 39 move down in first connecting groove 3110 inside, the elasticity downstream of second spring 3111 is overcome to the one end of filter 39, when the left side that until filter 39 breaks away from second connecting groove 3112, through the manpower to the direction pulling filter 39 of keeping away from first casing 1, make the lower extreme and the separation of first connecting groove 3110 of filter 39, can take off filter 39 and wash or change, during the installation, put into first connecting groove 3110 inside with the one end of filter 39 through the manpower, promote filter 39 to the direction that is close to first connecting block 36 through the manpower, at the in-process that promotes, the elasticity of second spring 3111 is overcome to first connecting groove 3110 inside to the removal to the one end of filter 39, one end and second 3112 to this time of filter 3112, the elasticity of second spring 3111 can change the one end of second spring 3112, thereby the filter 39 is convenient the damage of filter 39 takes place to the connecting groove 3112, thereby the filter 39 takes place when the filter extrusion.

As an embodiment of the present invention, as shown in fig. 2, a lower material plate 3113 is fixedly installed on the inner surface of the right side of the first casing 1 near the lower end of the discharge port 4.

In operation, the utility model discloses a set up unloading board 3113, make things convenient for the gangue to drop to the higher authority of conveyer belt 5 through unloading board 3113, avoid the gangue to drop to the inside wasting of resources's that causes of first casing 1 problem through feed opening 310.

The working principle is as follows: when the coal gangue falls onto the filter plate 39 through the feeding pipe 2, the motor 31 is turned on through the control system, the motor 31 drives the rotating rod 32 to rotate, in the rotating process of the rotating rod 32, because the front ends of the first extrusion rod 33 and the second extrusion rod 37 are both arranged in a ring shape, when the rotating first extrusion rod 33 is contacted with the second extrusion rod 37, the rotating force enables the first extrusion rod 33 and the second extrusion rod 37 to generate yielding force, the yielding force enables the second extrusion rod 37 to move towards the direction far away from the first extrusion rod 33, and the process is repeated, the first connecting block 36 shakes up and down under the action of the rotating yielding force of the rotating rod 32, the filter plate 39 shakes up and down, because the second connecting block 38 is hinged with the middle of the first shell 1 through a hinge, and one end of the filter plate 39 far away from the first connecting block 36 can be matched with one end close to the first connecting block 36 to move up and down, the filtering effect of the dust contained in the mixture of the coal briquette and the coal gangue and filtered by the filter plate 39 is ensured, by arranging the telescopic rod 312, when feeding is performed, the length of the third connecting block 313 in the feeding pipe 2 can be controlled by controlling the telescopic rod 312, and the size of a material opening formed between the third connecting block 313 and the feeding pipe 2 is controlled, so that the amount of raw materials entering the first shell 1 from the feeding pipe 2 in unit time can be controlled, the problem that the filtering effect of the filter plate 39 is influenced due to the fact that the amount of the mixture of the coal briquette and the coal gangue on the filter plate 39 is too large because of too large feeding amount is solved, the dust contained in the mixture of the coal briquette and the coal gangue is removed in the process of feeding the coal briquette and the coal gangue, the problem that a large amount of flying coal ash is generated in the sorting process, long-time ash accumulation can cause the reduction of equipment identification precision, and the interference is caused to the sorting of the coal briquette is solved, meanwhile, the problem that flying coal ash can influence the surrounding environment and workers is solved, and the working effect of the automatic coal gangue sorting device is improved.

The electric elements that this article appeared all are connected through transformer and external master controller and 220V commercial power to the master controller can play the conventional known equipment of control for the computer to the utility model provides a product model is the use of going on according to the structural feature of product for this technical scheme, and its product can be adjusted and reform transform after purchasing, makes it match more and accord with the utility model discloses technical scheme belongs to, it is the technical scheme of this technical scheme best application, and the model of its product can be replaced and reform transform according to the technical parameter of its needs, and it is known for the skilled person in the art belongs to, consequently, what the skilled person in the art can be clear passes through the utility model provides a technical scheme obtains corresponding result of use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An automatic coal gangue sorting device comprises:

a first housing (1);

the feeding pipe (2) is connected to the outer surface of the upper end of the first shell (1) in a penetrating way and is close to the left side edge;

the discharge port (4) penetrates through the outer surface of the right side of the first shell (1) and is close to the edge of the lower end;

the conveyor belt (5) is arranged on the outer surface of the right side of the first shell (1) and is close to the edge of the lower end;

the device comprises an installation table (6) and a vision collector (7), wherein the installation table (6) is arranged at two sides of the side surface of the conveyor belt (5), and the vision collector (7) is fixedly arranged at the position, close to the middle, of the outer surface of the lower end of the installation table (6); and

a dust removing mechanism (3);

the method is characterized in that: ash removal mechanism (3) set up the lower extreme position that the inside of first casing (1) is close to inlet pipe (2), and ash removal mechanism (3) are arranged in clearing up the dust that contains in the gangue.

2. The automatic coal gangue sorting device according to claim 1, wherein: the dust removing mechanism (3) comprises a motor (31) fixedly installed on the outer surface of the left side of a first shell (1) and close to the upper end position, a rotating rod (32) is fixedly installed on an output shaft of the motor (31), a first extrusion rod (33) which is uniformly distributed is fixedly installed on the outer surface of one side of the rotating rod (32), a first installation groove (34) is formed in the upper end position of the inner surface of the right side of the first shell (1) and close to the rotating rod (32), a connecting rod (35) is fixedly installed on the inner top surface of the first installation groove (34) and close to the middle position, a first connecting block (36) is movably connected to the inner surface of the connecting rod (35), a second extrusion rod (37) is fixedly installed on the outer surface of the lower end of the connecting block (35) and close to the edge position of the right side, the second extrusion rod (37) is in contact with the first extrusion rod (33) mutually, a second connecting block (38) is connected to the inner surface of the left side of the first shell (1) and close to the edge position of the upper end through a hinge, a second connecting block (38) is connected with a filter plate (39) through a right connecting block (311), a clamping block (310) is installed on the outer surface of the right side of the first connecting block (310), the left side surface of installation piece (311) is close to intermediate position fixed mounting has telescopic link (312), the one end fixed mounting of telescopic link (312) has third connecting block (313), the one end of third connecting block (313) runs through inlet pipe (2) and extends to its inside.

3. The automatic coal gangue sorting device according to claim 2, wherein: the right end of the third connecting block (313) is arranged in an inclined plane.

4. The automatic coal gangue sorting device according to claim 2, wherein: the inner surface of the first mounting groove (34) is fixedly provided with a first spring (314) close to the outer side of the connecting rod (35), and the lower end of the first spring (314) is fixedly connected with the first connecting block (36).

5. The automatic coal gangue sorting device according to claim 2, wherein: the left side internal surface of first casing (1) is close to intermediate position fixed mounting has first swash plate (315), the one end of first swash plate (315) is located the left side position of feed opening (310), the left side internal surface of first casing (1) is close to the upper end position of first swash plate (315) and has run through and has seted up connector (316), the left side surface of first casing (1) is close to the right side fixed mounting of connector (316) and has second casing (317), the left side surface of second casing (317) is close to lower extreme border position and is provided with ash hole (319).

6. The automatic coal gangue sorting device according to claim 5, wherein: a second inclined plate (318) is fixedly arranged on one side, close to the ash outlet (319), of the inner bottom surface of the second shell (317).

7. The automatic coal gangue sorting device according to claim 2, wherein: first connecting groove (3110) have been seted up near the intermediate position to one side surface of first connecting block (36), the internal surface of first connecting groove (3110) is close to intermediate position fixed mounting has second spring (3111), second connecting groove (3112) have been seted up near the intermediate position to one side surface of second connecting block (38).

8. The automatic coal gangue sorting device according to claim 2, wherein: and a blanking plate (3113) is fixedly arranged at the lower end position of the inner surface of the right side of the first shell (1), which is close to the discharge hole (4).

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