CN220200788U - Dust-proof structure for discharging device and discharging device - Google Patents

Abstract

The disclosure provides a dustproof construction and discharge apparatus for discharge apparatus relates to discharge apparatus technical field. Wherein, discharge apparatus is used for unloading to the storage bucket for discharge apparatus's dustproof construction includes: the connecting section is arranged between the discharging device and the charging basket and is communicated with the discharging device; the dustproof section is arranged at one end of the connecting section, which is opposite to the discharging device, and is communicated with the connecting section; wherein, the linkage segment is telescopic structure, and dustproof section can enclose to keep off in the feed inlet department of storage bucket or stretch into in the feed inlet along with the concertina movement of linkage segment, and this disclosure can make between discharge apparatus and the storage bucket form confined structure to the problem that the raw materials takes place the dust loss through the in-process of discharge apparatus unloading to the storage bucket in has been solved.

Description

Dust-proof structure for discharging device and discharging device

Technical Field

The disclosure relates to the technical field of discharging equipment, in particular to a dustproof structure for a discharging device and the discharging device.

Background

In the production process of products such as glass substrates, there is usually a process link of unloading, which is used for unloading raw materials into a charging basket through an unloading device for subsequent use. The discharge device is a machine for discharging raw materials from a transport container, and has wide application in various fields of industrial production. The material discharging device mainly comprises a material bin, wherein a material barrel is arranged below the material bin, raw materials fall into the material bin, and enter the material barrel through a bottom outlet of the material bin to finish the material discharging process.

In the unloading process, the raw materials can produce a large amount of dust dissipation from the in-process of bin free whereabouts to the feed cylinder, in order to reduce the concentration of dust among the prior art, set up the discharge tube in the below of feed bin generally to set up the dust absorption mouth at the lateral wall of discharge tube, the dust absorption mouth is connected in the fan, utilizes the fan to absorb the dust that the raw materials produced through feed bin, discharge tube fall into the in-process of storage bucket. Since the bucket is usually movable, a gap is usually formed between the bucket and the discharge pipe when the bucket is placed below the bin, so that part of dust still escapes outwards from the gap, and the dust concentration on site is affected.

Accordingly, there is a need for a dust-proof structure for a discharge device to address at least the above-mentioned problems.

Disclosure of Invention

The technical problem to be solved by the present disclosure is: how to solve the problem that dust escapes from a gap due to the gap between a discharge pipe and a charging basket in a discharge device.

To solve the above technical problem, an embodiment of the present disclosure provides a dustproof structure for a discharge apparatus, the discharge apparatus is used for discharging to the storage bucket, wherein, a dustproof structure for a discharge apparatus includes: the connecting section is arranged between the discharging device and the charging basket and is communicated with the discharging device; the dustproof section is arranged at one end of the connecting section, which is opposite to the discharging device, and is communicated with the connecting section; the connecting section is of a telescopic structure, and the dustproof section can move to the position of the feeding hole of the charging basket along with the telescopic movement of the connecting section or extend into the feeding hole.

In some embodiments, the dust-proof structure for a discharge device further comprises: the first plate body comprises a discharging pipe section, and the first plate body is connected with the discharging pipe section; the second plate body is parallel to the first plate body, the connecting section is connected between the first plate body and the second plate body, and the dustproof section is arranged on the surface of the second plate body, which is opposite to the connecting section.

In some embodiments, the dustproof structure for the discharging device further comprises at least two driving devices connected to the second plate body, wherein the at least two driving devices encircle the connecting section and are uniformly distributed along the circumferential direction, and the driving devices drive the second plate body to be close to or far away from the first plate body so that the dustproof section is far away from or in contact with the charging basket.

In some embodiments, the driving device comprises a lifting device and a connecting part, the lifting device comprises a first end and a second end which are oppositely arranged, the first end is connected with the first plate body, and the second end is connected with the second plate body through the connecting part; the second end can be either near or far from the first end.

In some embodiments, the lifting device is a cylinder or a linear module.

In some embodiments, the lifting device comprises a first rod portion and a second rod portion, the first rod portion is connected to the first plate, the second rod portion is connected to the second plate, and the first rod portion is in threaded connection with the second rod portion.

In some embodiments, the dust-proof structure for the unloading device further includes a detecting portion disposed on the first plate body and configured to detect a movement position of the second plate body relative to the first plate body.

In some embodiments, the connection section is a flexible structure; or, the connecting section comprises a first pipe section and a second pipe section, the first pipe section is communicated with the unloading device, one end of the second pipe section is slidingly arranged in the second pipe section, and the other end of the second pipe section is communicated with the dustproof section.

In some embodiments, the dust-proof structure for the discharge device further comprises a fan, and the discharge tube section is provided with a dust outlet for communicating with an air inlet of the fan.

The embodiment of the disclosure also provides a discharging device, which comprises the dustproof structure for the discharging device.

Through above-mentioned technical scheme, the dustproof construction for discharge apparatus that this disclosure provided, through linkage segment and discharge apparatus intercommunication, and the linkage segment is telescopic structure, can drive dustproof section through the extension of linkage segment and be close to the storage bucket, to dustproof section enclose and keep off in feed inlet department, or stretch into in the feed inlet to form confined structure between messenger's discharge apparatus and the storage bucket, realize preventing dust, thereby solved the raw materials and unloaded the in-process of storage bucket through discharge apparatus and take place the problem of dust loss.

The discharging device provided by the disclosure has the same or similar technical effects as the dustproof structure for the discharging device provided by the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a prior art discharge device in a discharge state;

FIG. 2 is a schematic view of a dust-proof structure for a discharge device according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a structure in which a discharge tube section is connected to a first plate body in a dust-proof structure for a discharge device according to an embodiment of the present disclosure;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic view of a dust-proof section of a dust-proof structure for a discharge apparatus according to an embodiment of the present disclosure connected to a second plate;

fig. 6 is a schematic structural view of a lifting device in a dust-proof structure for a discharge device according to an embodiment of the present disclosure.

Reference numerals illustrate:

1. a connection section; 2. a dust-proof section; 3. a first plate body; 4. a second plate body; 5. a driving device; 501. a lifting device; 502. a connection part; 503. a first lever portion; 504. a second lever portion; 6. a detection unit; 7. a storage bin; 701. a discharge pipe section; 702. a dust outlet; 8. a charging barrel; 9. and a third plate body.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

As shown in fig. 1, the discharging device generally comprises a bin 7, and during discharging, raw materials enter the bin 7 from a transport container, then flow out from the bottom of the bin 7, fall into a charging bucket 8 positioned below the bin 7, and complete the discharging process. In general, the bin 7 is disposed above the bucket 8, and since there is a gap between the discharging device and the bucket 8, dust generated in the discharging process can escape from the gap, so as to affect the dust concentration on site.

In order to solve the problems existing in the prior art, the embodiment of the disclosure provides a dustproof structure for a discharging device, a telescopic connecting section 1 drives a dustproof section 2 to adjust a gap between the dustproof section 2 and a charging basket 8, so that the dustproof section 2 can be enclosed at a feeding hole of the charging basket 8 or extend into the feeding hole, a closed structure is formed between the connecting section 1 and the charging basket 8, and sealing between the discharging device and the charging basket 8 is realized, so that the dust is prevented from escaping from the discharging device and the charging basket 8.

Example 1

Embodiments of the present disclosure provide a dust-proof structure for a discharge apparatus for discharging to a charging basket 8, wherein, as shown in fig. 2 to 6, the dust-proof structure for a discharge apparatus includes: the connecting section 1 is arranged between the discharging device and the charging basket 8 and is communicated with the discharging device; the dustproof section 2 is arranged at one end of the connecting section 1, which is opposite to the unloading device, and is communicated with the connecting section 1; wherein, connecting section 1 is telescopic structure, and dustproof section 2 can enclose the feed inlet department that keeps off at storage bucket 8 or stretch into in the feed inlet along with the flexible motion of connecting section 1.

The embodiment of the disclosure provides a dustproof construction for discharge apparatus, is applicable to the discharge apparatus of various occasions, for example dust discharge, the raw materials that contains dust is unloaded or other material's unloading process, and wherein, discharge apparatus includes feed bin 7 for hold the raw materials, link 1 can communicate with the discharge gate of feed bin 7 bottom, is arranged in providing the space of passing through of raw materials in the feed bin 7.

The embodiment of the disclosure provides a dustproof construction for discharge apparatus, through linkage segment 1 and discharge apparatus intercommunication, and linkage segment 1 is scalable structure, can drive dustproof segment 2 through the flexible of linkage segment 1 and be close to storage bucket 8, enclose to dustproof segment 2 and keep off in feed inlet department, or stretch into in the feed inlet to form confined structure between messenger's discharge apparatus and storage bucket 8, realize preventing dust, thereby solved the raw materials and unloaded the in-process of storage bucket 8 through discharge apparatus and take place the problem of dust loss.

In some embodiments, as shown in fig. 3, the dust-proof structure for the discharge apparatus further includes: the first plate body 3, the unloading device comprises an unloading pipe section 701, and the first plate body 3 is connected to the unloading pipe section 701; the second plate body 4, the mutual parallel arrangement of second plate body 4 and first plate body 3, link 1 is connected between first plate body 3 and second plate body 4, and dustproof section 2 sets up in the surface of second plate body 4 dorsad link 1.

Wherein, discharge apparatus still includes feed bin 7, and discharge tube section 701 communicates in the discharge gate department of feed bin 7. The unloading device further comprises a third plate body 9, wherein the third plate body 9 is arranged at one end of the unloading pipe section 701, facing the storage bin 7, and is connected with the storage bin 7 through a plurality of connecting pieces, and the connecting pieces can be bolts.

The first plate body 3 and the second plate body 4 can be respectively made of metal pieces, a first connecting hole is formed in the first plate body 3, and the discharging pipe section 701 is connected to the first surface of the first plate body 3 and is communicated with the first connecting hole; one end of the connecting section 1 is connected to a second surface of the first plate body 3 opposite to the first surface and is communicated with the first connecting hole, so that the connection between the discharging pipe section 701 and the connecting section 1 is realized.

The unloading pipe section 701 and the first plate body 3, and the connecting section 1 and the first plate body 3 can be respectively fixed by welding, threaded connection, bolt connection, gluing and other modes, which is not particularly limited.

The second plate body 4 is provided with a second connecting hole, the other end of the connecting section 1 is connected to the third surface of the second plate body 4 and communicated with the second connecting hole, the dustproof section 2 is connected to the fourth surface, opposite to the third surface, of the second plate body 4 and communicated with the second connecting hole, and therefore the connection section 1 and the dustproof section 2 are communicated.

Wherein, the external diameter of dustproof section 2 is not greater than the internal diameter of feed inlet of storage bucket 8 to can stretch into in the feed inlet, at this moment, can be through second plate body 4 and storage bucket 8 contact, thereby seal the feed inlet of storage bucket 8, prevent the dust loss.

The connection section 1 and the second plate body 4, and the dustproof section 2 and the second plate body 4 can be fixed by means of welding, threaded connection, bolt connection, gluing and the like, and the connection is not particularly limited.

The first plate body 3 and the second plate body 4 can be circular plates or rectangular plates, and the cross sections of the connecting section 1 and the dustproof section 2 can be round, oval or rectangular.

In some embodiments, as shown in fig. 2, the dust-proof structure for the unloading device further comprises at least two driving devices 5 connected to the second plate body 4, at least two driving devices 5 are circumferentially distributed around the connecting section 1, and the driving devices 5 drive the second plate body 4 to approach or separate from the first plate body 3, so that the dust-proof section 2 is separated from or contacted with the charging basket 8.

The driving device 5 is used for driving the second plate body 4 to be close to or far away from the first plate body 3, and the plurality of driving devices 5 uniformly distributed along the circumferential direction can provide uniform acting force for the second plate body 4, so that the working process is stable and reliable.

In some embodiments, the dust guard structure for the discharge device further comprises a fan, and the discharge tube section 701 is provided with a dust outlet 702 for communicating with an air inlet of the fan. The dust outlet 702 is communicated with the air inlet of the fan through a connecting pipe section, so that dust generated in the discharging pipe section 701 can be sucked away through the fan, and the dust removing effect in the discharging process is further improved.

In some embodiments, as shown in fig. 4, three driving devices 5 are provided, and the three driving devices 5 are uniformly distributed on the outer side of the connecting section 1 in a surrounding shape and are arranged in a staggered manner with the connecting section, so that the dust sucking process in the discharging section 701 by the fan is prevented from being interfered in the working process of the driving devices 5.

In some embodiments, the driving device 5 includes a lifting device 501 and a connecting portion 502, where the lifting device 501 includes a first end and a second end that are disposed opposite to each other, the first end is connected to the first board 3, and the second end is connected to the second board 4 through the connecting portion 502; the second end can be either near or far from the first end.

Wherein the second end can be close to or far away from the first end, so that the lifting device 501 has a lifting function, so that the second plate 4 can be driven to be close to or far away from the first plate 3.

Wherein the connection portions 502 are provided on the third surface of the second plate body 4, and the second end of the lifting device 501 of each driving device 5 is connected to one connection portion 502.

In some embodiments, as shown in fig. 4 and 5, the connection portion 502 has an inverted U-shaped structure, the connection portion 502 may be fixed to the second plate body 4 by welding, and the second end of the lifting device 501 may be connected to the connection portion 502 by a floating joint.

The floating joint is a commercial product and is used for reducing assembly errors and improving assembly precision. The connecting portion 502 is provided with a mounting hole, and the floating joint can be fixed with the connecting portion 502 through the mounting hole and a connecting piece penetrating through the mounting hole.

In some embodiments, as shown in fig. 5, the lifting device 501 includes a first rod portion 503 and a second rod portion 504, the first rod portion 503 is connected to the first plate 3, the second rod portion 504 is connected to the second plate 4, and the first rod portion 503 is in threaded connection with the second rod portion 504.

The first rod portion 503 or the second rod portion 504 is of a hollow structure, and the first rod portion 503 and the second rod portion 504 are connected through threads, so that the relative position of the first rod portion 503 and the second rod portion 504 in the axial direction can be adjusted, the distance between the second plate body 4 and the first plate body 3 is changed, the second plate body 4 is close to or far from the first plate body 3, and the expansion and contraction process of the auxiliary connecting section 1 is realized.

The lifting device 501 can also provide guiding action for the second plate 4 to a certain extent, so that the second plate 4 can keep a relatively stable movement state in the process of approaching or separating from the first plate 3.

Example 2

Embodiment 2 according to the present disclosure provides a dust-proof structure for a discharge device different from embodiment 1 in that,

the inside diameter of dustproof section 2 is greater than the inside diameter of the feed inlet of storage vat 8, and is less than the external diameter of storage vat 8 to can contact in the top of storage vat 8, and set up around the feed inlet of storage vat 8, form and enclose and keep off the structure, thereby reduce the dust escape between discharge apparatus and the storage vat 8.

Example 3

Embodiment 3 according to the present disclosure provides a dust-proof structure for a discharge device different from embodiment 1 in that,

in some embodiments, the lifting device 501 is a cylinder or a linear module, the driving end of the cylinder or the linear module is connected to the connecting portion 502 of the second plate body 4, and the driving end of the cylinder or the linear module extends or retracts to drive the second plate body 4 away from or close to the first plate body 3.

The second plate body 4 is driven to move relative to the first plate body 3 through the air cylinder or the linear module, so that the dust-proof section 2 is close to or far away from the charging basket 8, and the movement is stable and reliable.

Example 4

Embodiment 4 according to the present disclosure provides a dust-proof structure for a discharge device different from embodiment 1 in that,

as shown in fig. 2, the dust-proof structure for the discharging device further includes a detecting portion 6, where the detecting portion 6 is disposed on the first plate 3 and is used for detecting the movement position of the second plate 4 relative to the first plate 3.

The detecting unit 6 is used for detecting the movement position of the second board body 4, and may include a position sensor, an ultrasonic position detector, an infrared position detector, or a proximity switch, and other components capable of detecting the movement position in the prior art.

In some embodiments, the detecting portion 6 includes a proximity switch, provided on the first plate 3, for detecting the approach of the second plate 4.

The dust-proof structure for the discharge device further comprises a controller, and the detection part 6 is in communication connection with the controller.

When the external diameter of dustproof section 2 is less than the internal diameter of the feed inlet of storage vat 8, second plate body 4 is in when first preset distance for first plate body 3, and second plate body 4 can contact with storage vat 8, and dustproof section 2 stretches into in the feed inlet of storage vat 8, and the controller begins unloading according to the detection signal control discharge apparatus of detection part 6 this moment, is closed state between discharge apparatus and the storage vat 8 in-process material device, avoids the dust loss.

When the external diameter of dustproof section 2 is greater than the internal diameter of the feed inlet of storage vat 8 and is less than the external diameter of storage vat 8, when second plate body 4 is in the second for first plate body 3 and predetermines the distance, dustproof section 2 can contact and form the effect of enclosing the fender to the feed inlet with storage vat 8, and the controller begins unloading at this moment according to the detection signal control discharge apparatus of detection portion 6, is closed state between discharge apparatus and storage vat 8 through enclosing the fender of dustproof section 2 in the unloading process, avoids the dust loss.

The position of the second plate body 4 is detected through the detection part 6, so that the position signal can be fed back to the controller when a preset position signal is obtained, the controller can control the discharging device to discharge materials, and an automatic control process is realized.

Example 5

Embodiment 5 according to the present disclosure provides a dust-proof structure for a discharge device different from embodiment 1 in that,

in some embodiments, the connection section 1 is a flexible structure.

The connecting section 1 can be made of flexible materials such as woven cloth, metal corrugated pipes or hoses, and the stretching function is realized through physical characteristics of the materials, so that the movement of the second plate body 4 is realized under the cooperation of the driving device 5, and finally the movement of the dustproof section 2 is realized.

The connection section 1 can be connected with the first plate body 3 and the second plate body 4 in a connection mode such as bolts, glue or rivets.

Example 6

Embodiment 6 according to the present disclosure provides a dust-proof structure for a discharge device different from embodiment 1 in that,

in some embodiments, the connecting section 1 comprises a first pipe section and a second pipe section, the first pipe section is communicated with the unloading device, one end of the second pipe section is slidingly arranged in the second pipe section, and the other end of the second pipe section is communicated with the dust-proof section 2.

By adjusting the relative positions of the first and second pipe sections in the axial direction, an adjustment of the position of the dust-proof section 2 relative to the connection section 1 can be achieved.

The first pipe section and the second pipe section can be in threaded connection, and the position of the dustproof section 2 relative to the position of the connecting section 1 is adjusted by adjusting the threaded connection position, so that the dustproof section 2 is enclosed and blocked at the feed inlet of the charging basket 8.

Or, the first pipe section is slidably connected with the second pipe section, the first pipe section is connected to the first plate body 3 and is communicated with the unloading pipe section 701, the second pipe section is connected to the second plate body 4 and is communicated with the dustproof section 2, and the position relationship between the dustproof section 2 and the connecting section 1 is adjusted by adjusting the position relationship between the second plate body 4 and the first plate body 3, so that the purpose of sealing between the unloading device and the charging basket 8 can be achieved.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (10)

1. A dust-proof structure for a discharge device for discharging to a charging basket (8), characterized in that it comprises:

the connecting section (1) is arranged between the discharging device and the charging basket (8) and is communicated with the discharging device; the method comprises the steps of,

the dustproof section (2) is arranged at one end of the connecting section (1) opposite to the discharging device and is communicated with the connecting section (1);

the connecting section (1) is of a telescopic structure, and the dustproof section (2) can move along with the telescopic movement of the connecting section (1) to the position of the feeding hole of the charging basket (8) or extend into the feeding hole.

2. The dust-proof structure for a discharging device according to claim 1, further comprising:

the first plate body (3) comprises a discharging pipe section (701), and the first plate body (3) is connected to the discharging pipe section (701);

the second plate body (4), second plate body (4) with first plate body (3) each other parallel arrangement, linkage segment (1) connect in first plate body (3) with between second plate body (4), dustproof section (2) set up in second plate body (4) dorsad surface of linkage segment (1).

3. A dust-proof structure for a discharge apparatus according to claim 2, wherein,

the device also comprises at least two driving devices (5) connected to the second plate body (4), wherein the at least two driving devices (5) encircle the connecting section (1) and are uniformly distributed along the circumferential direction;

the driving device (5) drives the second plate body (4) to be close to or far away from the first plate body (3) so that the dustproof section (2) is far away from or in contact with the charging basket (8).

4. A dust-proof structure for a discharge apparatus as set forth in claim 3, wherein,

the driving device (5) comprises a lifting device (501) and a connecting part (502), the lifting device (501) comprises a first end and a second end which are oppositely arranged, the first end is connected with the first plate body (3), and the second end is connected with the second plate body (4) through the connecting part (502); the second end can be either proximal to or distal from the first end.

5. A dust-proof structure for a discharge apparatus as set forth in claim 4, wherein,

the lifting device (501) is an air cylinder or a linear module.

6. A dust-proof structure for a discharge apparatus as set forth in claim 4, wherein,

the lifting device (501) comprises a first rod portion (503) and a second rod portion (504), the first rod portion (503) is connected to the first plate body (3), the second rod portion (504) is connected to the second plate body (4), and the first rod portion (503) is in threaded connection with the second rod portion (504).

7. A dust-proof structure for a discharge apparatus according to claim 3, further comprising a detection portion (6), the detection portion (6) being provided to the first plate body (3) for detecting a movement position of the second plate body (4) with respect to the first plate body (3).

8. A dust-proof structure for a discharge apparatus according to claim 2, wherein,

the connecting section (1) is of a flexible structure;

or, the connecting section (1) comprises a first pipe section and a second pipe section, the first pipe section is communicated with the unloading device, one end of the second pipe section is slidingly arranged in the second pipe section, and the other end of the second pipe section is communicated with the dustproof section (2).

9. A dust-proof structure for a discharge apparatus according to claim 2, wherein,

the device further comprises a fan, and the discharging pipe section (701) is provided with a dust outlet (702) which is communicated with an air inlet of the fan.

10. A discharge device, characterized by comprising a dust-proof structure for a discharge device according to any one of claims 1 to 9.