Material guiding chute and material conveying device

Abstract

The utility model discloses a material guide chute and a material conveying device. The technical problem that in the prior art, materials fall from a manhole of the material guide chute and pollute the ground of a workshop is solved. The material guiding chute comprises a body which comprises a chute body and a door body, and the door body is connected to the chute body in an openable and closable mode so as to cover a manhole; the material receiving assembly comprises a cover body and a material receiving piece connected to the tank body, the material receiving piece is provided with a material receiving cavity and a material receiving opening communicated with the material receiving cavity, the material receiving opening is located below the manhole, the cover body is provided with a covering part, a connecting part and a counterweight part which are sequentially arranged, and projections of the covering part and the counterweight part in the vertical direction respectively fall into the material receiving piece and outside the material receiving piece; the connecting part is hinged to the opening edge of the material receiving opening through a hinge shaft, so that the cover body is switched between a first position and a second position, the material receiving opening is covered with the covering part under the condition that the cover body is located at the first position, and the covering part extends into the material receiving cavity under the condition that the cover body is located at the second position. By means of the material guiding chute, the quality of workshop air and the quality of the ground environment are improved.

Description

Technical Field

[0001] This application belongs to the field of material conveying chute technology, specifically relating to a material conveying chute and a material conveying device. Background Technology

[0002] The feed chute is an important component in the material transport process of a belt conveyor. Its main function is to transfer materials, such as pulverized coal, from one belt conveyor to another or to a silo. Feed chutes are generally vertically installed for easy material handling. Because the transported materials, such as pulverized coal, have a certain viscosity and moisture content, they may adhere to the inner wall of the feed chute during transport. Therefore, manholes are provided in the feed chute to facilitate the observation and maintenance of the conveyor rollers and inner wall of the belt conveyor located within the feed chute by operators.

[0003] In related technologies, during the process of workers opening the manhole to clean the material adhering to the inner wall of the feed chute, a small amount of material usually falls from the manhole onto the workshop floor, contaminating the workshop floor. Summary of the Invention

[0004] To address the technical problem of materials falling from the manhole of the feed chute and contaminating the workshop floor, this application provides a feed chute.

[0005] In a first aspect of this application, a feed chute is provided, comprising:

[0006] The body includes a trough and a door. The trough is provided with a material guide channel for material to pass through and a manhole communicating with the material guide channel. The door is closable and connected to the trough to cover the manhole.

[0007] The receiving assembly includes a cover and a receiving component connected to the groove. The receiving component has a receiving cavity and a receiving port communicating with the receiving cavity. The receiving port is located below the manhole. The cover has a covering part, a connecting part and a counterweight part arranged in sequence. The projections of the covering part and the breeding part along the vertical direction fall inside the receiving component and outside the receiving component, respectively.

[0008] The connecting part is hinged to the edge of the receiving port via a hinge shaft, so that the cover can switch between a first position and a second position. When the cover is in the first position, the covering part covers the receiving port. When the cover is in the second position, the covering part extends into the receiving cavity.

[0009] In some embodiments, the tank is provided with a return port, and the receiving cavity is connected to the guiding channel through the return port.

[0010] In some embodiments, the bottom of the receiving cavity is inclined, and the height of the bottom of the receiving cavity increases sequentially along the direction away from the return port.

[0011] In some embodiments, the receiving member is hinged to the tank body to allow it to flip and switch between a receiving position and a return position. When the receiving member is in the receiving position, it is located below the manhole. When the receiving member is in the return position, the receiving port extends into the tank body through the manhole, the cover is away from the receiving cavity, and the receiving port is open to allow the material in the receiving member to fall into the tank body.

[0012] In some embodiments, the receiving cavity is a cuboid cavity, and the dimension of the receiving cavity perpendicular to the hinge axis is smaller than the height dimension of the receiving cavity.

[0013] In some embodiments, the receiving assembly further includes two guide plates, both of which are connected to the outside of the groove and located on both sides of the receiving port along the axial direction of the hinge axis. The dimension of the receiving port along the axial direction of the hinge axis is smaller than that of the receiving port, and the distance between the far sides of the two guide plates is greater than that of the receiving port.

[0014] In some embodiments, the receiving assembly further includes a guide member, which has a through-type guide cavity. The guide cavity is connected to the receiving cavity through the receiving port. The guide cavity is located below the manhole, and the cross-sectional area of ​​the guide cavity decreases sequentially from top to bottom.

[0015] In some embodiments, the guide member includes a first side plate, a second side plate, a third side plate, and a fourth side plate, which are connected sequentially, and the fourth side plate is connected to the first side plate to form the guide cavity.

[0016] In some embodiments, the receiving assembly further includes multiple counterweights connected to the counterweight part; the groove is provided with a sealing ring surrounding the manhole, and the door is provided with an annular groove. When the manhole is closed, the sealing ring extends into the annular groove in a compressed state.

[0017] A second aspect of this application provides a material conveying device, comprising:

[0018] A first belt conveyor and a second belt conveyor, wherein the height of the first belt conveyor is higher than that of the second belt conveyor.

[0019] The first aspect is a guide chute, wherein the upper end of the guide chute is connected to the output end of the first belt conveyor, and the lower end of the guide chute is connected to the input end of the second belt conveyor.

[0020] A material guide chute according to an embodiment of this application includes a main body and a receiving assembly. The main body includes a trough and a door. The trough has a material guide channel for material passage and a manhole communicating with the material guide channel. The door is closable and connected to the trough to cover the manhole. The receiving assembly includes a cover and a receiving component connected to the trough. The receiving component has a receiving cavity and a receiving port communicating with the receiving cavity. The receiving port is located below the manhole. The cover has a covering part, a connecting part, and a counterweight part arranged sequentially. The projections of the covering part and the receiving part along the vertical direction fall inside and outside the receiving component, respectively.

[0021] Because the connecting part and the edge of the receiving port are hinged by a hinge shaft, the cover can switch between a first position and a second position under the gravity of the material falling through the manhole. When it is necessary to clean the material on the inner wall of the guide channel, the door is opened, and the operator takes a tool and inserts it into the guide channel through the manhole to scrape off the material on the inner wall. During this process, a small amount of material falls from the manhole. Since the receiving port is located below the manhole, the material leaking from the manhole falls onto the cover. Under the gravity of the material, the cover rotates around the hinge shaft, thus switching from the first position covering the receiving port to the second position extending into the receiving cavity. The material then flows down the inclined cover into the receiving cavity, and the cover rotates back to the first position around the hinge shaft.

[0022] Because of the material receiving device, materials falling from the entrance can be collected, preventing them from falling directly into the workshop and causing dust pollution of the air and ground environment. The cover on the receiving device can also seal the material within the receiving chamber, preventing exposure to the environment and dust escape, thus improving the air and ground quality of the workshop. Attached Figure Description

[0023] Figure 1 A schematic diagram of the material guide chute in one or more embodiments of this application is shown.

[0024] Figure 2 A schematic diagram of the receiving assembly in one embodiment of this application is shown.

[0025] Figure 3 It shows Figure 2 A schematic diagram of the cover in the receiving assembly at the first and second positions.

[0026] Figure 4 A schematic diagram of the receiving assembly is shown in another embodiment of this application.

[0027] Figure 5It shows Figure 4 A magnified view of a portion of the image.

[0028] Figure 6 It shows Figure 5 A schematic diagram of the receiving component in the receiving position with the cover in the first position.

[0029] Figure 7 It shows Figure 5 A schematic diagram of the receiving component in the receiving position and the cover in the second position.

[0030] Figure 8 It shows Figure 5 A schematic diagram of the receiving component in the receiving assembly at the return position.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100-Body, 110-Groove, 111-Manhole, 112-Sealing Ring, 113-First Locking Component, 115-Limiting Rod, 116-Limiting Block, 120-Door, 121-Ring Groove, 122-Second Locking Component.

[0033] 200-Receiving assembly, 210-Guide plate, 220-Guide component, 221-First side plate, 222-Second side plate, 223-Third side plate, 224-Fourth side plate, 230-Receiving component, 231-Receiving cavity, 232-Handle, 240-Cover, 241-Covering part, 243-Counterweight part, 244-Hinge shaft, 250-Counterweight block, 260-Hinge structure, 261-Rotating arm, 262-Connecting seat.

[0034] 300-Operating Platform;

[0035] 400 - Materials. Detailed Implementation

[0036] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] According to a first aspect of this application, a material guide chute is provided, which can collect materials falling from the manhole during the cleaning process of the material guide channel, and there is no dust pollution, thus improving the workshop environment.

[0038] Please see Figure 1The material guide chute provided in this application includes a body 100 and a receiving assembly 200.

[0039] The main body 100 is used for material guiding. The main body 100 includes a trough 110 and a door 120. The trough 110 has a material guiding channel for material to pass through, allowing material to be guided from a high-height belt conveyor to a low-height belt conveyor. The trough 110 has a manhole 111 communicating with the material guiding channel. The door 120 is closably connected to the trough 110 to cover the manhole 111, for example, the door 120 is hinged to the trough 110, or the door 120 is snapped into the trough 110. If material adheres to the inner wall of the material guiding channel, operators can open the door 120 and use tools to reach into the trough 110 through the manhole 111 to clean the material from the inner wall of the material guiding channel.

[0040] Please see Figure 2 The receiving assembly 200 includes a cover 240 and a receiving component 230 connected to the tank 110. The receiving component 230 is provided with a receiving cavity 231 and a receiving port communicating with the receiving cavity 231. The receiving port is located below the manhole 111 so that the material 400 falling from the manhole 111 during the cleaning process is collected into the receiving cavity 231 through the receiving port.

[0041] Please see Figure 3 The cover 240 can be a cover plate, having a covering part 241, a connecting part, and a counterweight part 243 arranged sequentially. The projections of the covering part 241 and the seeding part along the vertical direction fall inside and outside the receiving part 230, respectively. The connecting part is hinged to the edge of the receiving port via a hinge shaft 244, allowing the cover 240 to switch between a first position and a second position. When the cover 240 is in the first position, the covering part 241 covers the receiving port, thus covering the collected material 400 and preventing exposed dust from drifting into the workshop and affecting the workshop environment. When the cover 240 is in the second position, the covering part 241 extends into the receiving chamber 231, allowing the material 400 to enter the receiving chamber 231 sequentially through the manhole 111 and the receiving port, preventing the material 400 from falling directly into the workshop. This prevents dust from flying and avoids polluting the workshop floor environment.

[0042] In practical implementation, the gravity of the inoculation section and the covering section 241 can be matched so that when no material 400 falls from the manhole 111, the covering section 241 just covers the receiving port, which is the first position. When the material 400 falls from the manhole 111 to the covering section 241, the weight on the side of the covering section 241 is greater than that of the counterweight 243, so the covering section 241 will tilt and extend into the receiving cavity 231, which is the second position. The material 400 will slide down the tilted covering section 241 into the receiving cavity 231.

[0043] After the material 400 in the tank 110 is cleaned out, the collected material 400 is returned to the tank 110. In some embodiments, please refer to [the relevant documentation]. Figure 3 The tank 110 is provided with a return port, and the receiving chamber 231 is connected to the guiding channel through the return port. This allows the cleaned material 400 to directly enter the guiding channel of the tank 110 after entering the receiving chamber 231, thus achieving the recycling of the material 400. For other embodiments, please refer to... Figure 4 as well as Figure 8 The receiving component 230 is hinged to the tank 110, allowing it to flip and switch between a receiving position and a return position. When the receiving component 230 is in the receiving position, it is located below the manhole 111, and the cover 241 can switch between a first position and a second position. After the cleaning operation is completed, if there is fallen material 400 in the receiving cavity 231, the receiving component 200 can be flipped, causing the receiving component 230 to flip to the return position. Please refer to [link to relevant documentation]. Figure 8 When the receiving component 230 is in the return position, the receiving port extends into the tank 110 through the manhole 111, the cover 241 moves away from the receiving cavity 231, and the receiving port opens, allowing the material 400 in the receiving component 230 to fall into the tank 110, thus completing the recovery of the material 400. In some other embodiments, the material 400 in the receiving cavity 231 can also be manually returned to the tank 110.

[0044] In some embodiments, where the receiving chamber 231 is connected to the guiding channel via the return port, please refer to [reference needed]. Figure 3 The bottom of the receiving chamber 231 is inclined, and the height of the bottom of the receiving chamber 231 increases sequentially in the direction away from the return port, so that the material 400 entering the receiving chamber 231 can slide into the guide channel by gravity, saving manpower. In some embodiments, the bottom of the receiving chamber 231 can also be set horizontally, and the operator can push the material 400 in the receiving chamber 231 into the guide channel by using a push plate.

[0045] In some embodiments, the receiving component 230 is hinged to the tank body 110, allowing the receiving component 230 to be positioned between the receiving position and the return position. (See also...) Figure 7 The receiving cavity 231 can be configured as a cuboid cavity, with the dimension of the receiving cavity 231 perpendicular to the hinge axis 244 being smaller than its height. This results in a larger gap between the covering part 241 and the cavity wall of the receiving cavity 231 when the covering part 241 is in the second position, facilitating the rapid sliding of the material 400 from the covering part 241 into the receiving cavity 231. In other embodiments, the receiving cavity 231 can also be a cylindrical cavity, with its height greater than its radial dimension, further improving the efficiency of the material 400 sliding from the covering part 241 into the receiving cavity 231.

[0046] To facilitate the flipping of the receiving component 230, a handle 232 can be provided on the receiving component 230. In some embodiments, the receiving component 230 is hinged to the groove 110 via a hinge structure 260. Please refer to [link / reference needed]. Figure 5 The hinge structure 260 includes a connecting seat 262, a rotating shaft, and a rotating arm 261. The connecting seat 262 is connected to the groove 110. The rotating arm 261 includes a vertical section and a horizontal section connected to each other. The vertical section is rotatably connected to the connecting seat 262 via the rotating shaft, and the horizontal section is connected to the receiving member 230. Multiple hinge structures 260 can be provided, such as two or three, to improve the stability of the receiving member 230's rotation relative to the groove 110. When the door 120 is hinged to the groove 110, the hinge position of the door 120 and the groove 110 is located on a different side of the manhole 111 from the hinge structure 260. In some embodiments, please refer to... Figure 4 In some embodiments, the hinge position between the door body 120 and the groove 110 is located at the side edge of the manhole 111, and the hinge structure 260 is located at the lower edge of the manhole 111.

[0047] In some embodiments, please refer to Figure 5 The receiving assembly 200 also includes two guide plates 210, both of which are connected to the outside of the trough 110 and located on both sides of the receiving port along the axial direction of the hinge shaft 244. The dimension of the receiving port along the axial direction of the hinge shaft 244 is smaller than the receiving port, and the distance between the far sides of the two guide plates 210 is greater than the receiving port. The guide plates 210 are provided to facilitate the entry of all materials 400 falling from the manhole 111 into the receiving chamber 231, and to prevent the receiving component 230 from interfering with the edge of the manhole 111 during the flipping process between the receiving position and the return position.

[0048] In some embodiments, please continue reading Figure 5 The receiving assembly 200 also includes a guide member 220, which has a through-type guide cavity. The guide cavity is connected to the receiving cavity 231 through the receiving port. The guide cavity is located below the manhole 111, and the cross-sectional area of ​​the guide cavity decreases from top to bottom to concentrate the material 400, facilitating subsequent recycling or transfer. The guide cavity can be funnel-shaped, specifically conical or pyramidal. When the receiving assembly 200 is in the return position, the opening of the guide cavity extends into the tank 110 through the manhole 111, and the end of the cover 241 away from the hinge shaft 244 extends out of the guide cavity, so that the material 400 in the receiving cavity returns to the tank 110 through the guide cavity.

[0049] In some embodiments, please continue reading Figure 5The guide component 220 includes a first side plate 221, a second side plate 222, a third side plate 223, and a fourth side plate 224. The first side plate 221, the second side plate 222, the third side plate 223, and the fourth side plate 224 are connected in sequence. The fourth side plate 224 is connected to the first side plate 221 to form a guide cavity. The first side plate 221 is connected to the horizontal section.

[0050] In some embodiments, please refer to Figure 6 The trough 110 is provided with a limiting rod 115. The connection between the guide member 220 and the receiving member is provided with a through hole for the limiting rod 115 to pass through. The diameter of the through hole is larger than the diameter of the limiting rod 115. One end of the limiting rod 115 is connected to the trough 110, and the other end passes through the through hole and extends into the receiving cavity 231. When the covering part 241 is in the first position, the bottom surface of the limiting member acts on the top of the covering part 241. This can reduce the design requirements of the counterweight part 243 and the covering part 241. Even if the two cannot be naturally balanced, the limiting member can be used to keep the covering part 241 in the first position when no material 400 falls. During the process of the tank 110 flipping from the receiving position to the return position, since the limiting rod 115 is connected to the tank 110 and is fixed, the cover 240 can be manually pressed slightly into the receiving cavity 231 first, and then the receiving part 230 is flipped over. The limiting rod 115 gradually moves away from the through hole to avoid interference between the cover 240 and the limiting part. The diameter of the through hole is larger than the diameter of the limiting rod 115 to avoid interference between the receiving part 230 and the limiting part during the flipping process.

[0051] In some embodiments, please continue reading Figure 6 The receiving assembly 200 also includes multiple counterweights 250, such as two, three, or four counterweights 250. These counterweights 250 are connected to the counterweight section 243, allowing the number of counterweights 250 to be adjusted according to the weight of the covering section 241, thus matching the torque on both sides of the hinge shaft 244. In implementation, multiple hanging holes can be provided in the counterweight section 243, allowing the counterweights 250 to be hung on any of them. The number of counterweights 250 can be adjusted as needed, making operation more convenient. The counterweights 250 are hung during cleaning operations, and after cleaning is completed and the material 400 in the receiving chamber 231 is recovered, the counterweights 250 are stored away.

[0052] In some embodiments, please refer to Figure 2The groove 110 is provided with a sealing ring 112, which surrounds the manhole 111. The door 120 is provided with an annular groove 121. When the door 120 is closed, the sealing ring 112 extends into the annular groove 121 in a compressed state to achieve a seal on the manhole 111. The groove 110 may be provided with a first locking member 113, and the door 120 may be provided with a second locking member 122. The first locking member 113 and the second locking member 122 cooperate to lock the groove 110 and the door 120 together. The structures of the first locking member 113 and the second locking member 122 can be selected according to actual needs. For example, the first locking member 113 can be a locking rod with a locking hole, the axis of which is perpendicular to the axis of the locking rod. The second locking member 122 can be a plug rod, and the door body 120 can also be provided with a lock hole. The locking rod passes through the lock hole and extends out of the lock hole, while the plug rod is inserted into the lock hole, with both ends of the plug rod abutting against the outer side of the door body 120. Of course, other locking structures can also be selected to lock the door body 120 and the groove 110. The locking structure is existing technology and can be selected according to implementation needs, or refer to existing technology disclosures. Further details are not elaborated here.

[0053] In some embodiments, please refer to Figure 6 The groove 110 is connected to the limiting block 116. When the receiving part 230 is in the receiving position, the side of the receiving part 230 abuts against the limiting block 116, so that the limiting block 116 and the hinge structure 260 form two support positions in the height direction, thereby improving the stability of the receiving part 230 during the receiving process.

[0054] In some embodiments, an operating platform 300 may be provided below the receiving component 200 to facilitate cleaning the inner wall of the guide channel in the tank 110 and the operation of flipping the receiving component 230.

[0055] Based on the same technical concept, a second aspect of this application provides a material conveying device.

[0056] The material conveying device of this application includes a guide chute, a first belt conveyor and a second belt conveyor according to any embodiment of the first aspect. The height of the first belt conveyor is higher than that of the second belt conveyor. The upper end of the guide chute is connected to the output end of the first belt conveyor, and the lower end of the guide chute is connected to the input end of the second belt conveyor, so as to realize the transfer of material 400 from the first belt conveyor to the second belt conveyor.

[0057] The feed chute provided in this application has at least the following advantages:

[0058] (1) Only the empty space below the manhole 111 needs to be equipped with a receiving component 200, and the receiving trough is equipped with a cover 240 that can be opened and closed according to the material 400. This can collect the material 400 that falls from the manhole 111 during the cleaning of the material guide channel, and there is no dust pollution, which improves the workshop environment.

[0059] (2) The receiving component 230 can be connected to the material guide channel to directly realize the recycling of material 400. The receiving component 230 can also be flipped to switch between the receiving position and the return position to realize the recycling of material 400 collected in the receiving trough.

[0060] (3) An annular groove 121 is provided on the door body 120 to cooperate with the sealing ring 112, which improves the sealing performance between the door body 120 and the groove 110.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A material guide chute, characterized in that, include: The body includes a trough and a door. The trough is provided with a material guide channel for material to pass through and a manhole communicating with the material guide channel. The door is closable and connected to the trough to cover the manhole. The receiving assembly includes a cover and a receiving member connected to the groove. The receiving member has a receiving cavity and a receiving port communicating with the receiving cavity. The receiving port is located below the manhole. The cover has a covering part, a connecting part and a counterweight part arranged in sequence. The projections of the covering part and the counterweight part in the vertical direction fall inside the receiving member and outside the receiving member, respectively. The connecting part is hinged to the edge of the receiving port via a hinge shaft, so that the cover can switch between a first position and a second position. When the cover is in the first position, the covering part covers the receiving port. When the cover is in the second position, the covering part extends into the receiving cavity.

2. The feed chute according to claim 1, characterized in that, The tank is provided with a return port, and the receiving chamber is connected to the guiding channel through the return port.

3. The feed chute according to claim 2, characterized in that, The bottom of the receiving chamber is inclined, and the height of the bottom of the receiving chamber increases sequentially in the direction away from the return port.

4. The feed chute according to claim 1, characterized in that, The receiving component is hinged to the tank body to allow it to flip and switch between the receiving position and the return position. When the receiving component is in the receiving position, it is located below the manhole. When the receiving component is in the return position, the receiving port extends into the tank body through the manhole, the covering part moves away from the receiving cavity, and the receiving port opens to allow the material in the receiving component to fall into the tank body.

5. The feed chute according to claim 4, characterized in that, The receiving cavity is a cuboid cavity, and the dimension of the receiving cavity perpendicular to the hinge axis is smaller than the height dimension of the receiving cavity.

6. The feed chute according to claim 4, characterized in that, The receiving assembly further includes two guide plates, both of which are connected to the outside of the groove and located on both sides of the receiving port along the axial direction of the hinge axis. The dimension of the receiving port along the axial direction of the hinge axis is smaller than that of the receiving port, and the distance between the far sides of the two guide plates is greater than that of the receiving port.

7. The feed chute according to any one of claims 1-6, characterized in that, The receiving assembly further includes a material guide, which has a through-type material guide cavity. The material guide cavity is connected to the receiving cavity through the receiving port. The material guide cavity is located below the manhole, and the cross-sectional area of ​​the material guide cavity decreases from top to bottom.

8. The feed chute according to claim 7, characterized in that, The material guide includes a first side plate, a second side plate, a third side plate, and a fourth side plate. The first side plate, the second side plate, the third side plate, and the fourth side plate are connected in sequence, and the fourth side plate is connected to the first side plate to form the material guide cavity.

9. The feed chute according to any one of claims 1-6, characterized in that, The receiving assembly also includes multiple counterweights connected to the counterweight part; the groove is provided with a sealing ring, which surrounds the manhole, and the door is provided with an annular groove. When the manhole is closed, the sealing ring extends into the annular groove in a compressed state.

10. A material conveying device, characterized in that, include: A first belt conveyor and a second belt conveyor, wherein the height of the first belt conveyor is higher than that of the second belt conveyor; The material guide chute according to any one of claims 1-9, wherein the upper end of the material guide chute is connected to the output end of the first belt conveyor, and the lower end of the material guide chute is connected to the input end of the second belt conveyor.

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