CN214157058U - Discharging device - Google Patents

Abstract

The utility model relates to a discharging device, include: the storage container is provided with a blanking port; and the discharging mechanism comprises a mounting seat and a discharging bin, the material storage container and the discharging bin are detachably mounted on the mounting seat through an easily-detached structure respectively, the discharging bin is correspondingly arranged below the blanking port, and the discharging bin is used for receiving and outputting materials conveyed by the material storage container. The discharging device of the scheme is simple in structure and easy to disassemble and assemble, can effectively improve the convenience of cleaning and maintenance, and guarantees the food sanitation and safety.

Description

Discharging device

Technical Field

The utility model relates to a material supply equipment technical field especially relates to a discharging device.

Background

Along with the development of informatization and intelligent technology, various automatic cooking equipment appears on the market and can replace the manual work to carry out automatic cooking operation, can effectively alleviate artifical intensity of labour, promote culinary art efficiency. However, a preparation process is often required before cooking, for example, a certain amount of rice is added to the clay pot before cooking. At present, most discharging devices on the market are complex in structure, difficult to assemble and disassemble, inconvenient to clean and maintain and incapable of guaranteeing food sanitation and safety.

SUMMERY OF THE UTILITY MODEL

Therefore, the discharge device has a simple structure, is easy to assemble and disassemble, can effectively improve the convenience of cleaning and maintenance, and ensures the food sanitation and safety.

A discharge device, comprising:

the storage container is provided with a blanking port; and

discharge mechanism, discharge mechanism includes mount pad and play feed bin, storage container with go out the feed bin respectively through readily removable structure detachably install in the mount pad, go out the feed bin correspond set up in the below of blanking mouth, it is used for connecing to get and export from to go out the feed bin the material that storage container carried.

The discharging device stores materials through the material storage container, and receives and outputs the materials conveyed from the material storage container through the discharging bin. Because storage container and play feed bin can dismantle with the mount pad through readily removable structure respectively and be connected, when needs wash and maintain storage container and play feed bin, with storage container and play feed bin pull down alone respectively can, easy operation is convenient. The discharging device of the scheme is simple in structure and easy to disassemble and assemble, can effectively improve the convenience of cleaning and maintenance, and guarantees the food sanitation and safety.

In one embodiment, the discharging bin is provided with a quantitative cavity which is communicated up and down, the upper end and the lower end of the quantitative cavity are respectively provided with a first opening and a second opening, the first opening is correspondingly provided with a first valve component, and the second opening is correspondingly provided with a second valve component.

In one embodiment, the mounting seat comprises a first mounting plate and a second mounting plate which are opposite in the up-down direction and are arranged at intervals, and a stand column connected between the first mounting plate and the second mounting plate, the discharging bin is detachably arranged between the first mounting plate and the second mounting plate, the material storage container is detachably arranged on the top surface of the first mounting plate, the first mounting plate is provided with a material passing opening used for communicating the material falling opening with the first opening, and the second mounting plate is provided with a material outlet used for communicating the second opening.

In one embodiment, the discharging device further comprises a quick-release clamp, a conveying pipe extending towards the first mounting plate is arranged at the bottom of the storage container, the lower pipe opening of the conveying pipe forms the blanking opening, a connecting pipe which is communicated with the upper portion and the lower portion is arranged on the periphery of the blanking opening, corresponding to the top surface of the first mounting plate, and the conveying pipe is in butt joint with the connecting pipe and is detachably clamped and fixed through the quick-release clamp.

In one embodiment, a first flange is arranged on the outer peripheral surface of the feed delivery pipe, a second flange is arranged on the outer peripheral surface of the connecting pipe, the first flange abuts against the second flange, the quick release clamp surrounds the periphery of the abutting part of the feed delivery pipe and the connecting pipe, and a limiting groove matched with the first flange and the second flange is arranged on the inner peripheral surface of the quick release clamp.

In one embodiment, the first mounting plate and/or the second mounting plate is/are slidably connected to the tap bin, and the tap bin is horizontally withdrawable from between the first mounting plate and the second mounting plate.

In one embodiment, the outer edge of the first opening and the outer edge of the second opening are respectively provided with a flange, the first mounting plate and the second mounting plate are respectively provided with a guide rail corresponding to the flange, the guide rail is provided with a sliding groove in sliding fit with the flange, and at least one end of the sliding groove is provided with an opening for the flange to be inserted or pulled out.

In one embodiment, the discharging device further comprises a fastener, and at least one guide rail and the corresponding flange are detachably locked and fixed through the fastener.

In one embodiment, the fastening member is a plug pin, and the guide rail and the flange are respectively and correspondingly provided with a jack which is in plug-in fit with the plug pin.

In one embodiment, the first valve assembly comprises a first opening and closing driving member and a first valve plate, the first opening and closing driving member is connected with the first mounting plate, the first valve plate is connected with the driving end of the first opening and closing driving member, and the opening of the first opening can be adjusted by the first valve plate under the driving of the first opening and closing driving member; and/or the presence of a gas in the gas,

the second valve assembly comprises a second opening and closing driving piece and a second valve plate, the second opening and closing driving piece is connected with the second mounting plate, the second valve plate is connected with the driving end of the second opening and closing driving piece, and the second valve plate can adjust the opening degree of the second opening under the driving of the second opening and closing driving piece.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a discharging device according to an embodiment of the present invention;

FIG. 2 is a front view of the discharge apparatus of FIG. 1;

FIG. 3 is a side view of the outfeed unit of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is an enlarged view of a portion of FIG. 1 at C;

FIG. 7 is an exploded view of the storage container, the quick release clamp, and the first mounting plate;

FIG. 8 is a schematic structural view of the quick release clip of FIG. 7;

fig. 9 is a schematic structural view of the discharging bin in fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 to 5, a discharging device according to an embodiment of the present invention includes a material storage container 10 and a discharging mechanism 20. The material storage container 10 is provided with a blanking port 101; the discharging mechanism 20 comprises a mounting seat 21 and a discharging bin 22, the material storage container 10 and the discharging bin 22 are detachably mounted on the mounting seat 21 through an easily-detachable structure respectively, the discharging bin 22 is correspondingly arranged below the blanking port 101, and the discharging bin 22 is used for receiving, taking and outputting materials conveyed from the material storage container 10. Wherein, the quick detachable structure includes but not limited to the form such as adopting quick detachable anchor clamps, sliding assembly, buckle connection, grafting to realize the connection between two components to make can rapid Assembly and dismantlement between two components. For example, in the present embodiment, the magazine 10 and the mounting seat 21 may be detachably connected by a quick-release clamp, and the discharge bin 22 and the mounting seat 21 may be detachably connected by a sliding assembly and an inserting and fixing matching manner.

The discharging device stores the materials through the material storage container 10, and receives and outputs the materials conveyed from the material storage container 10 through the discharging bin 22. Because storage container 10 and play feed bin 22 are connected through easily removable structure and mount pad 21 can dismantle respectively, when needs wash and maintain storage container 10 and play feed bin 22, with storage container 10 and play feed bin 22 respectively pull down alone can, easy operation is convenient. The discharging device of the scheme is simple in structure and easy to disassemble and assemble, can effectively improve the convenience of cleaning and maintenance, and guarantees the food sanitation and safety.

In particular, the storage container 10 is used for storing materials, which may be solid granular or powdery materials, including but not limited to rice, beans, flour, and the like. In order to facilitate the automatic output of the material under the action of its own weight, the material storage container 10 may be designed into a conical hopper-like structure. For example, as shown in fig. 1, in this embodiment, the storage container 10 includes a cylinder body, a conical cylinder disposed at the bottom of the cylinder body, and a delivery pipe 11 disposed at the bottom of the conical cylinder, the cylinder body, the conical cylinder and the delivery pipe 11 are sequentially communicated, and a lower nozzle of the delivery pipe 11 forms a blanking port 101, such a structural design can enable the storage container 10 to have a large storage capacity, and at the same time, a conical surface of the conical cylinder can guide the material, so that the material can be gathered to the delivery pipe 11 under the action of its own gravity. Optionally, the storage container 10 further includes an end cover openably and closably disposed on the top of the barrel body, so that the end cover can be conveniently supplied with materials when opened, and when the end cover is closed, dust or foreign matters can be prevented from entering the inside of the storage container 10, thereby ensuring food sanitation and safety. The discharging bin 22 is used for receiving the materials conveyed by the material storage container 10 and then outputting the materials to realize automatic discharging. The specific shape of the discharging bin 22 can be set according to actual needs, and includes but is not limited to a cylinder, a square cylinder or other shapes.

Further, in this embodiment, the discharging bin 22 has a quantitative cavity which is through from top to bottom, the upper end and the lower end of the quantitative cavity respectively form a first opening 221 and a second opening 222, the first opening 221 is correspondingly provided with a first valve component 23, and the second opening 222 is correspondingly provided with a second valve component 24. Wherein the first valve assembly 23 is used for controlling the opening degree of the first opening 221, and the second valve assembly 24 is used for controlling the opening degree of the second opening 222.

The discharging device stores the material through the material storage container 10, and in the initial state, the first valve component 23 closes the first opening 221, and the second valve component 24 closes the second opening 222. When discharging is needed, the first valve component 23 opens the first opening 221, and at this time, the material in the material storage container 10 can fall into the quantitative cavity of the discharging bin 22 from the discharging port 101 and the first opening 221; after the quantitative cavity is filled with the materials, the first valve assembly 23 closes the first opening 221 to prevent the materials in the material storage container 10 from continuously falling; then the second valve assembly 24 opens the second opening 222, and the material in the discharging bin 22 can fall into the receiving container 60 below from the second opening 222, so that quantitative discharging is realized.

Further, referring to fig. 2 and 5, in the present embodiment, the mounting base 21 includes a first mounting plate 211 and a second mounting plate 212 that are opposite to each other in the vertical direction and are disposed at an interval, and a column 213 that is connected between the first mounting plate 211 and the second mounting plate 212, the discharging bin 22 is detachably disposed between the first mounting plate 211 and the second mounting plate 212, the storage container 10 is detachably mounted on the top surface of the first mounting plate 211, the first mounting plate 211 is provided with a material passing opening 201 for communicating the material dropping opening 101 with the first opening 221, and the second mounting plate 212 is provided with a material discharging opening 202 that is communicated with the second opening 222. Specifically, go out the feed bin 22 and be located between first mounting panel 211 and the second mounting panel 212, and storage container 10 is located the top surface of first mounting panel 211, and the material in storage container 10 can be in proper order via blanking mouth 101, material passing mouth 201 and first uncovered 221 and get into the ration intracavity, exports via second uncovered 222 and discharge gate 202 again, and overall structure is compact, and the material circulation is smooth and easy. Wherein the mounting seat 21 provides a reliable mounting base for the magazine 10 and the discharging bin 22, and in order to ensure the structural stability of the mounting seat 21, the first mounting plate 211 and the second mounting plate 212 may be supported by a plurality of spaced pillars 213.

Further, referring to fig. 2 and 4, in the present embodiment, the discharging device further includes a bracket 30, the second mounting plate 212 is connected to the top of the bracket 30, and a receiving space for the receiving container 60 to be placed is formed below the bracket 30 corresponding to the discharging hole 202. Specifically, the support 30 may be configured to mount the entire discharging device on the working platform, for example, in this embodiment, the support 30 is substantially a portal frame structure, and includes a top plate and support plates disposed on two opposite sides of the top plate, the second mounting plate 212 is fixed to the top surface of the top plate, a material receiving space is defined between the top plate and the two support plates, and a through hole is further disposed on the top plate corresponding to the discharging hole 202. When the material is needed to be received, the material receiving container 60 is placed in the material receiving space, and automatic material receiving can be achieved.

Further, please refer to fig. 1 and fig. 7, in this embodiment, the discharging device further includes a quick release clamp 40, the bottom of the storage container 10 is provided with a feeding pipe 11 extending toward the first mounting plate 211, a lower pipe opening of the feeding pipe 11 forms the discharging opening 101, the top surface of the first mounting plate 211 is provided with a connecting pipe 215 penetrating up and down corresponding to the periphery of the discharging opening 201, and the feeding pipe 11 is butted with the connecting pipe 215 and detachably clamped and fixed by the quick release clamp 40. Thus, when the magazine 10 needs to be cleaned and maintained, the quick release clamp 40 unlocks the feed pipe 11 and the connecting pipe 215, so that the magazine 10 can be removed as a whole, and the operation is simple and convenient. The quick-release clamp 40 can be a quick-release pipe clamp, tool-free disassembly can be achieved, disassembly can be achieved manually by an operator, and convenience in cleaning and maintenance can be further improved.

Further, in this embodiment, the outer peripheral surface of the feeding pipe 11 is provided with a first flange 111, the outer peripheral surface of the connecting pipe 215 is provided with a second flange 2151, the first flange 111 abuts against the second flange 2151, the quick release clamp 40 surrounds the outer periphery of the abutting portion of the feeding pipe 11 and the connecting pipe 215, and the inner peripheral surface of the quick release clamp 40 is provided with a limiting groove 401 matched with the first flange 111 and the second flange 2151. The first flange 111 and the second flange 2151 are restricted by the stopper groove 401, and the assembling reliability can be further ensured. Specifically, as shown in fig. 8, in the present embodiment, the quick release clamp 40 includes a first half hoop 41, a second half hoop 42 and a locking member 43, one end of the first half hoop 41 and one end of the second half hoop 42 are rotatably connected, the other end of the first half hoop 41 and the other end of the second half hoop 42 are detachably connected by the locking member 43, and the first half hoop 41 and the second half hoop 42 enclose to form an annular body. The locking member 43 may be a hand-screwed screw or a hand-operated wrench, and can be assembled and disassembled without tools.

Further, in the present embodiment, the first mounting plate 211 and/or the second mounting plate 212 are slidably connected to the discharging bin 22, and the discharging bin 22 can be horizontally drawn out from between the first mounting plate 211 and the second mounting plate 212. Therefore, when the discharging bin 22 needs to be cleaned and maintained, the discharging bin 22 only needs to be pulled out in a sliding mode along the horizontal direction, and the operation is simple and convenient.

Further, referring to fig. 1, fig. 6 and fig. 9, in the present embodiment, the outer edge of the first opening 221 and the outer edge of the second opening 222 are respectively provided with a flange 223, the first mounting plate 211 and the second mounting plate 212 are respectively provided with a guide rail 216 corresponding to the flange 223, the guide rail 216 is provided with a sliding slot slidably engaged with the flange 223, and at least one end of the sliding slot is provided with an opening for the flange 223 to be inserted or pulled out. Specifically, in the present embodiment, flanges 223 are respectively disposed on two opposite sides of the upper open end (i.e., the first open 221) of the discharging bin 22, flanges 223 are correspondingly disposed on two opposite sides of the lower open end (i.e., the second open 222) of the discharging bin 22, and the first mounting plate 211 and the second mounting plate 212 are respectively provided with a guide rail 216 matching with each flange 223. When the discharging bin 22 needs to be taken out, a certain acting force is only needed to be applied to the discharging bin 22, so that the flanging 223 can move towards one side of the opening along the sliding groove to rapidly pull out the discharging bin 22, and the operation is simple and convenient.

In addition, in order to avoid the displacement of the discharging bin 22 caused by external factors after sliding into place, in the embodiment, the discharging device further comprises a fastener 50, and at least one guide rail 216 and the corresponding flange 223 are detachably locked and fixed by the fastener 50. In this manner, when the tap bin 22 is slid into place, the fastener 50 secures the flange 223 in locking relation with the rail 216 to ensure that the tap bin 22 remains in a fixed position. When the discharging bin 22 needs to be pulled away, the fastener 50 is loosened, and the locking between the flanging 223 and the guide rail 216 is released. The fasteners 50 herein include, but are not limited to, thumb screws, latches, and the like.

Optionally, in this embodiment, the fastening element 50 is a pin, and the guide rail 216 and the turned edge 223 are respectively provided with a socket 224 for mating with the pin. The discharge bin 22 can be locked in a preset position by inserting the plug into the jack 224; after the bolt is pulled out, the locking can be released, so that the discharge bin 22 can be conveniently pulled out, and the operation is simple and convenient. Optionally, the top end of the bolt is further provided with a pull ring to further improve the convenience of use of the bolt. Optionally, the two flanges 223 at the lower open end of the discharging bin 22 are fastened and fixed with the corresponding guide rails 216 by one fastener 50, so that the installation reliability of the discharging bin 22 can be further improved.

Further, referring to fig. 4 and fig. 5, based on the above embodiment, the first valve assembly 23 includes a first opening/closing driving member 231 and a first valve plate 232, the first opening/closing driving member 231 is connected to the first mounting plate 211, the first valve plate 232 is connected to a driving end of the first opening/closing driving member 231, and the first valve plate 232 can adjust an opening degree of the first opening 221 under the driving of the first opening/closing driving member 231. The first opening/closing driving member 231 can drive the first valve plate 232 to slide or rotate to open or close the first opening 221. For example, in the present embodiment, the first valve plate 232 is slidably engaged with the upper open end of the discharging bin 22 along the horizontal direction, the first opening and closing driving member 231 has a piston rod connected to the first valve plate 232, and the first valve plate 232 is driven by the first opening and closing driving member 231 to slide and extend along the horizontal direction. The first opening/closing driving member 231 may be an air cylinder or an electric push rod.

Similarly, the second valve assembly 24 includes a second opening and closing driving element 241 and a second valve plate 242, the second opening and closing driving element 241 is connected to the second mounting plate 212, the second valve plate 242 is connected to the driving end of the second opening and closing driving element 241, and the second valve plate 242 can adjust the opening degree of the second opening 222 under the driving of the second opening and closing driving element 241. The second opening/closing driving member 241 can drive the second valve plate 242 to slide or rotate to open or close the second opening 222. For example, in the present embodiment, the second valve plate 242 is slidably engaged with the lower open end of the discharging bin 22 in the horizontal direction, the second opening/closing driving member 241 has a piston rod connected to the second valve plate 242, and the second valve plate 242 is driven by the second opening/closing driving member 241 to slide telescopically in the horizontal direction. The second opening/closing driving member 241 may be an air cylinder or an electric push rod.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A discharge device, comprising:

the storage container is provided with a blanking port; and

discharge mechanism, discharge mechanism includes mount pad and play feed bin, storage container with go out the feed bin respectively through readily removable structure detachably install in the mount pad, go out the feed bin correspond set up in the below of blanking mouth, it is used for connecing to get and export from to go out the feed bin the material that storage container carried.

2. The discharging device of claim 1, wherein the discharging bin has a quantitative cavity which is vertically communicated, the upper end and the lower end of the quantitative cavity respectively form a first opening and a second opening, the first opening is correspondingly provided with a first valve component, and the second opening is correspondingly provided with a second valve component.

3. The discharging device according to claim 2, wherein the mounting seat comprises a first mounting plate and a second mounting plate which are opposite to each other in the vertical direction and are arranged at intervals, and a column connected between the first mounting plate and the second mounting plate, the discharging bin is detachably arranged between the first mounting plate and the second mounting plate, the storage container is detachably mounted on the top surface of the first mounting plate, the first mounting plate is provided with a material passing opening for communicating the material dropping opening with the first opening, and the second mounting plate is provided with a material discharging opening communicated with the second opening.

4. The discharging device according to claim 3, characterized in that the discharging device further comprises a quick-release clamp, a feed delivery pipe extending towards the first mounting plate is arranged at the bottom of the storage container, the lower nozzle of the feed delivery pipe forms the discharging opening, a connecting pipe which is communicated with the upper part and the lower part is arranged on the top surface of the first mounting plate corresponding to the periphery of the discharging opening, and the feed delivery pipe is butted with the connecting pipe and detachably clamped and fixed by the quick-release clamp.

5. The discharging device as claimed in claim 4, wherein the outer peripheral surface of the feeding pipe is provided with a first flange, the outer peripheral surface of the connecting pipe is provided with a second flange, the first flange abuts against the second flange, the quick release clamp surrounds the outer periphery of the abutting portion of the feeding pipe and the connecting pipe, and the inner peripheral surface of the quick release clamp is provided with a limiting groove matched with the first flange and the second flange.

6. The discharge device of claim 3, wherein the first mounting plate and/or the second mounting plate is slidably coupled to the discharge bin, and the discharge bin is horizontally withdrawable from between the first mounting plate and the second mounting plate.

7. The discharging device according to claim 6, wherein the outer edge of the first opening and the outer edge of the second opening are respectively provided with a flange, the first mounting plate and the second mounting plate are respectively provided with a guide rail corresponding to the flange, the guide rail is provided with a sliding chute in sliding fit with the flange, and at least one end of the sliding chute is provided with an opening for the flange to be inserted or pulled out.

8. The outfeed device of claim 7, further comprising a fastener by which at least one of said rails is removably lockably secured with a corresponding one of said flanges.

9. The discharging device of claim 8, wherein the fastening member is a pin, and the guide rail and the flange are respectively and correspondingly provided with a socket engaged with the pin.

10. The discharge device according to any one of claims 3 to 9,

the first valve assembly comprises a first opening and closing driving piece and a first valve plate, the first opening and closing driving piece is connected with the first mounting plate, the first valve plate is connected with the driving end of the first opening and closing driving piece, and the opening degree of the first opening can be adjusted by the first valve plate under the driving of the first opening and closing driving piece;

and/or the second valve assembly comprises a second opening and closing driving piece and a second valve plate, the second opening and closing driving piece is connected with the second mounting plate, the second valve plate is connected with the driving end of the second opening and closing driving piece, and the second valve plate can adjust the opening degree of the second opening under the driving of the second opening and closing driving piece.

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