Discharging device and ladder flow sorting machine

Abstract

The utility model belongs to the technical field of material sorting, and discloses a discharging device and a ladder flow sorting machine. The discharging device comprises a feeding channel, a discharging channel and a discharging channel which are sequentially communicated from top to bottom, as well as a discharging wheel and a stopping assembly. The axis of the feeding channel and the axis of the discharging channel are parallel and staggered. The outer edge of the bottom of the discharging wheel is tightly attached to the inner bottom wall of the discharging channel, the discharging channel is provided with an observation window, and the observation window is opposite to the outer edge of the top of the discharging wheel. The material blocking assembly comprises an elastic pressing plate, one end of the elastic pressing plate is rotationally connected to the outer wall of the feeding channel, and the other end of the elastic pressing plate has a first state of being close to the outer edge of the top of the discharging wheel when not subjected to external force and a second state of being pushed by materials protruding out of the discharging wheel to be away from the outer edge of the top of the discharging wheel. And in the switching process of the elastic pressing plate between the first state and the second state, the projection of the elastic pressing plate on the inner top wall of the discharging channel always covers the observation window. According to the discharging device, materials are not prone to being blocked, and quantitative discharging can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of material sorting, in particular to a material discharging device and a ladder flow sorting machine. Background Art

[0002] With the advancement of existing technology, photoelectric separators have been widely used in the field of lump coal sorting. Their sorting indicators are better than those of traditional sorting equipment, and the optimal sorting particle size is 30mm-300mm. The cascade separator that matches the process is the best equipment for sorting materials with a particle size of 3mm-30mm. The sorting principle of the cascade separator combines the advantages of wind shaking table separators, air jigging separators and gas-solid fluidized bed separators. The bottom discharge mechanism is an important component of the cascade separator.

[0003] The existing discharge mechanism has an open design above the discharge wheel, and the size of the open opening is adjusted by a plug plate to ensure that the material cannot be discharged by self-flow due to the repose angle when the equipment is not vibrating. However, under vibration conditions, the discharge speed of the material is related to the speed of the discharge wheel, as well as the vibration intensity and vibration direction angle, making it impossible to achieve the purpose of quantitative discharge by controlling the speed of the discharge wheel. In addition, the opening of the open opening cannot be adjusted. If the discharge particle size becomes larger, the material may be stuck. If the discharge particle size becomes smaller, the material may flow by itself, making it impossible to accurately discharge the material.

[0004] Therefore, it is urgent to propose a discharging device and a ladder flow separator to solve the above problems. Utility Model Content

[0005] According to one aspect of the utility model, the utility model provides a discharging device with a low risk of material jamming, and can make the discharge of materials only related to the rotation speed of the discharging wheel, thereby achieving the purpose of accurate discharging, and can also prevent materials from flying out of the discharging device from the observation window above the discharging wheel due to vibration, so the safety is relatively high.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The discharging device comprises a feeding channel, a discharging channel, a discharging channel, a discharging wheel and a blocking assembly; the feeding channel, the discharging channel and the discharging channel are sequentially connected from top to bottom, and the axis of the feeding channel is parallel to the axis of the discharging channel and is staggered;

[0008] The discharge wheel is arranged in the discharge channel, the bottom outer edge of the discharge wheel is tightly fitted with the inner bottom wall of the discharge channel, the discharge channel has an observation window, the observation window is arranged opposite to the top outer edge of the discharge wheel, and there is a gap between the observation window and the top outer edge of the discharge wheel;

[0009] The material blocking assembly includes an elastic pressure plate, one end of which is rotatably connected to the outer wall of the feed channel, and the other end of which has a first state close to the top outer edge of the discharge wheel when not subject to external force and a second state in which the material protruding from the discharge wheel is pushed away from the top outer edge of the discharge wheel. During the movement of the elastic pressure plate between the first state and the second state, the projection of the elastic pressure plate on the inner top wall of the discharge channel always covers the observation window.

[0010] Optionally, when the elastic pressure plate is in the first state, the distance between the elastic pressure plate and the top outer edge of the discharge wheel is greater than 0 and less than twice the minimum particle size of the material.

[0011] Optionally, the material blocking assembly also includes an elastic limiting assembly, which includes an elastic member and a limiting rod, the elastic member is configured to always have a movement tendency to push the elastic pressure plate from the second state back to the first state, and the limiting rod is used to keep the elastic pressure plate in the first state when the elastic pressure plate is not subjected to external force.

[0012] Optionally, a plurality of the elastic limiting assemblies are provided, and the plurality of the elastic limiting assemblies are spaced apart along the length direction of the elastic pressure plate, and the length direction of the elastic pressure plate is the extension direction of one end of the elastic pressure plate rotatably connected to the outer wall of the feed channel.

[0013] Optionally, the elastic limiting assembly further includes a first bracket and a first limiting nut, the first bracket includes a first mounting plate and a second mounting plate, the first mounting plate is fixedly connected to the outer wall of the feeding channel, and one end of the elastic pressing plate is rotatably connected to one end of the first mounting plate;

[0014] The limiting rod is a screw rod, one end of which is rotatably connected to the plate surface of the elastic pressure plate facing away from the discharge wheel, and the other end of which passes through the second mounting plate and is connected to the first limiting nut;

[0015] The elastic member is sleeved on the screw rod, one end of the elastic member abuts against the elastic pressing plate, and the other end of the elastic member abuts against the second mounting plate.

[0016] Optionally, the elastic limiting component further includes:

[0017] A connecting seat, arranged on a plate surface of the elastic pressing plate facing away from the discharge wheel;

[0018] A first rotating shaft is disposed through the connecting seat;

[0019] A connecting block is rotatably connected to the first rotating shaft, and one end of the screw rod is connected to the connecting block.

[0020] Optionally, the second mounting plate includes a first V-shaped sub-plate and a second sub-plate, the first sub-plate is connected to the first mounting plate and is perpendicular to the first mounting plate, and the other end of the limiting rod is passed through the second sub-plate.

[0021] Optionally, the elastic limiting assembly further includes a second bracket and a second limiting nut, the second bracket is mounted on the outer wall of the feeding channel, and one end of the elastic pressing plate is rotatably connected to the second bracket via a second rotating shaft;

[0022] The elastic member comprises a sleeve portion and two torsion arms, the sleeve portion is sleeved on the second rotating shaft, and the two torsion arms are respectively in contact with the second bracket and the plate surface of the elastic pressure plate away from the discharge wheel;

[0023] The limiting rod is a screw rod, one end of which is connected to the plate surface of the elastic pressure plate facing away from the discharge wheel, and the other end is connected to the second limiting nut. When the elastic pressure plate is in the first state, the second limiting nut abuts against the outer wall of the discharge channel.

[0024] Optionally, the second limiting nut includes a nut body and a flange arranged around the outer periphery of the nut body, and the flange abuts against the outer wall of the discharge channel when the elastic pressure plate is in the first state.

[0025] According to another aspect of the utility model, the utility model also provides a ladder flow sorting machine, which includes a sorting bed and a discharge device described in any of the above technical solutions, and the sorting bed transports materials to the feeding channel of the discharge device.

[0026] Beneficial effects of the utility model:

[0027] The utility model provides a discharging device, including a feeding channel, a discharging channel, a discharging wheel and a material blocking assembly. The elastic pressure plate of the material blocking assembly maintains a first state close to the top outer edge of the discharging wheel when not subjected to external force, so that when the material particle size is small, the material also needs to be discharged by the rotation of the discharging wheel, and will not flow through the discharging channel into the discharging channel by itself; and when the material particle size is large, the elastic pressure plate can be pushed by the material protruding from the discharging wheel to the second state away from the top outer edge of the discharging wheel, which can avoid material jamming due to excessively large material particle size. That is, the discharging of the discharging device is only related to the rotation speed of the discharging wheel, and the purpose of quantitative discharging can be achieved by controlling the rotation of the discharging wheel, and the risk of jamming is low.

[0028] Since there is an observation window on the discharge channel, it is convenient to observe the discharge situation, but there is a risk of materials flying out of the discharge device from the observation window during the discharge process, and the safety is relatively low. The discharge device provided by the utility model, by setting an elastic pressure plate, during the process of switching between the first state and the second state, the projection of the elastic pressure plate on the inner top wall of the discharge channel always covers the observation window, which can effectively prevent materials from flying out of the observation window, and has a higher safety.

[0029] The utility model also provides a ladder flow sorting machine, comprising a sorting bed and the above-mentioned discharging device. The ladder flow sorting machine is not easy to get stuck, has a long service life, can discharge quantitatively, and has good safety performance due to the use of the above-mentioned discharging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0031] Figure 1 It is a structural schematic diagram of the discharging device provided in the first embodiment of the utility model;

[0032] Figure 2 It is an assembly diagram of the elastic pressure plate and the elastic limiting component from a viewing angle provided in the first embodiment of the utility model;

[0033] Figure 3 is an assembly diagram of the elastic pressure plate and the elastic limiting component from another perspective provided in the first embodiment of the present utility model;

[0034] Figure 4 This is an assembly diagram of the elastic pressure plate and the elastic limiting component from another perspective provided in the first embodiment of the present utility model;

[0035] Figure 5 It is a structural schematic diagram of the discharging device provided in the second embodiment of the utility model;

[0036] Figure 6 It is an assembly diagram of the elastic pressure plate and the elastic limiting component from a viewing angle provided in the second embodiment of the present utility model;

[0037] Figure 7 It is an assembly diagram of the elastic pressure plate and the elastic limiting component from another perspective provided in the second embodiment of the present utility model.

[0038] In the figure:

[0039] 100, feeding channel; 200, discharging channel; 210, observation window; 300, discharging channel; 400, discharging wheel; 500, material blocking assembly; 510, elastic pressure plate; 511, second rotating shaft; 520, elastic limiting assembly; 521, elastic member; 5211, sleeve portion; 5212, torsion arm; 522, limiting rod; 523, first bracket; 5231, first mounting plate; 5232, second mounting plate; 524, first limiting nut; 525, connecting seat; 526, first rotating shaft; 527, connecting block; 528, second bracket; 529, second limiting nut; 5291, flanging. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] Embodiment 1

[0045] This embodiment provides a discharging device with a low risk of material jamming, and can make the discharge of materials only related to the rotation speed of the discharging wheel, thereby achieving the purpose of accurate discharging. It can also prevent materials from flying out of the discharging device from the observation window above the discharging wheel due to vibration, and has a higher safety.

[0046] Specifically, Figure 1-Figure 4 As shown, the discharge device includes a feed channel 100 , a discharge channel 200 , a discharge channel 300 , a discharge wheel 400 and a blocking assembly 500 .

[0047] Among them, the feed channel 100, the discharge channel 200 and the discharge channel 300 are connected in sequence from top to bottom, the discharge wheel 400 is arranged in the discharge channel 200, and the bottom outer edge of the discharge wheel 400 is tightly fitted with the inner bottom wall of the discharge channel 200. The material enters the feed channel 100 from the inlet of the feed channel 100, and then falls onto the discharge wheel 400 under the action of gravity. The discharge wheel 400 transports the material to the discharge channel 300 by rotating, and finally discharges it from the outlet of the discharge channel 300. And, continue to refer to Figure 1 The axis of the feed channel 100 is parallel to the axis of the discharge channel 300 and is staggered, which can prevent the material entering the discharge channel 200 from the feed channel 100 from being directly pressed on the discharge wheel 400. On the one hand, it can prevent the discharge wheel 400 from being crushed, thereby extending the service life of the discharge wheel 400; on the other hand, it can prevent the discharge wheel 400 from being unable to rotate due to excessive material, thereby improving the reliability of the discharge wheel 400.

[0048] The discharge channel 200 has an observation window 210, which is arranged opposite to the top outer edge of the discharge wheel 400, and there is a gap between the discharge channel 200 and the top outer edge of the discharge wheel 400. By providing the observation window 210, the staff can observe the discharge situation through the observation window 210, which is convenient for real-time supervision.

[0049] By setting the bottom outer edge of the discharge wheel 400 to fit tightly with the inner bottom wall of the discharge channel 200, and a gap is provided between the top outer edge of the discharge wheel 400 and the observation window 210, the material can only fall into the discharge wheel 400 after entering the discharge channel 200 and be transported to the discharge channel 300 by the discharge wheel 400, or flow into the discharge channel 300 from the gap between the discharge wheel 400 and the observation window 210. If the material can flow by itself, the purpose of quantitative discharge cannot be achieved by controlling the rotation speed of the discharge wheel 400. In addition, since the observation window 210 is an open design, when the rotation speed of the discharge wheel 400 is faster, there is a risk that the material will fly out of the observation window 210.

[0050] Therefore, the discharge device provided in this embodiment is provided with a material blocking assembly 500, which includes an elastic pressure plate 510, one end of which is rotatably connected to the outer wall of the feed channel 100, and the other end of which has a first state close to the top outer edge of the discharge wheel 400 when not subject to external force and a second state in which the material protruding from the discharge wheel 400 is pushed to a point away from the top outer edge of the discharge wheel 400, and during the movement of the elastic pressure plate 510 between the first state and the second state, the projection of the elastic pressure plate 510 on the inner top wall of the discharge channel 200 always covers the observation window 210.

[0051] That is, when the particle size of the material is small, the elastic pressure plate 510 is in the first state, at which time the material will not flow from the elastic pressure plate 510 and the discharge wheel 400, so that the material needs to be discharged by the rotation of the discharge wheel 400; when the particle size of the material is large, due to the gap between the discharge wheel 400 and the observation window 210, the elastic pressure plate 510 can be pushed by the material protruding from the discharge wheel 400 to the second state away from the top outer edge of the discharge wheel 400, so that the material with a larger particle size can also be transported to the discharge channel 300 under the rotation of the discharge wheel 400, and the material can be prevented from being stuck due to the large particle size of the material. In this way, the discharge of the discharge device is only related to the rotation speed of the discharge wheel 400, and the purpose of quantitative discharge can be achieved by controlling the rotation of the discharge wheel 400, and the risk of material jamming is low.

[0052] By setting the elastic pressure plate 510 to move between the first state and the second state, the projection of the elastic pressure plate 510 on the inner top wall of the discharge channel 200 always covers the observation window 210, which can effectively prevent materials from flying out of the observation window 210 and has higher safety.

[0053] It is worth explaining that since the discharge device can discharge several tons of materials every minute, material self-flow refers to the free discharge of a large amount of material due to gravity in a short period of time. If only a few hundred pieces of material are discharged freely, it can be ignored and is not considered as material self-flow.

[0054] Preferably, when the elastic pressing plate 510 is in the first state, the distance between the elastic pressing plate 510 and the top outer edge of the discharge wheel 400 is greater than 0 and less than twice the minimum particle size of the material. This arrangement ensures that the material will not flow from the elastic pressing plate 510 and the top outer edge of the discharge wheel 400 due to vibration, and can prevent the elastic pressing plate 510 from contacting the discharge wheel 400, so that the discharge wheel 400 is scratched with the elastic pressing plate 510 during the rotation process, thereby effectively protecting the discharge wheel 400 and the elastic pressing plate 510.

[0055] Optionally, continue to see Figure 1In the present embodiment, when the elastic pressing plate 510 is in the first state, the elastic pressing plate 510 is parallel to the tangent line of the top outer edge of the discharge wheel 400 .

[0056] Further, see Figure 1-Figure 4 The material blocking assembly 500 further includes an elastic limiting assembly 520, which includes an elastic member 521 and a limiting rod 522. The elastic member 521 is configured to always have a movement tendency to push the elastic pressing plate 510 back from the second state to the first state, and the limiting rod 522 is used to keep the elastic pressing plate 510 in the first state when the elastic pressing plate 510 is not subjected to external force. By setting the elastic limiting assembly 520, if the elastic pressing plate 510 is pushed to the second state by the material protruding from the discharge wheel 400, it can automatically reset to the first state under the action of the elastic member 521, thereby avoiding the situation where the elastic pressing plate 510 is in the second state for a long time, causing some materials with smaller particle sizes to flow by themselves, thereby improving the discharge accuracy of the above-mentioned discharge device. By setting a limit rod 522 to limit the first state of the elastic pressure plate 510, the distance between the elastic pressure plate 510 and the top outer edge of the discharge wheel 400 when in the first state can be set according to the particle size requirements of the material to ensure that materials with smaller particle sizes cannot flow by themselves under the action of vibration, thereby improving the reliability of quantitative discharge of the above-mentioned discharge device.

[0057] Optionally, continue to see Figure 2-Figure 4 The elastic limiting components 520 are provided with a plurality of elastic limiting components 520, and the plurality of elastic limiting components 520 are arranged at intervals along the length direction of the elastic pressing plate 510, and the length direction of the elastic pressing plate 510 is the extension direction of one end of the elastic pressing plate 510 that is rotatably connected to the outer wall of the feeding channel 100 ( Figure 2 direction indicated by the arrow).

[0058] By providing a plurality of elastic limiting components 520 , the force uniformity of the elastic pressing plate 510 can be improved, thereby improving the working reliability of the elastic pressing plate 510 .

[0059] Optionally, in this embodiment, two elastic limiting components 520 are provided. In other embodiments, the number of elastic limiting components 520 can also be set to other numbers, such as three, four, etc., according to actual needs, and this application does not make specific restrictions.

[0060] Further, see Figure 2-Figure 4The elastic limiting assembly 520 further includes a first bracket 523 and a first limiting nut 524. The first bracket 523 includes a first mounting plate 5231 and a second mounting plate 5232. The first mounting plate 5231 is fixedly connected to the outer wall of the feeding channel 100, and one end of the elastic pressing plate 510 is rotatably connected to one end of the first mounting plate 5231. The limiting rod 522 is a screw rod, one end of which is rotatably connected to the plate surface of the elastic pressing plate 510 away from the discharge wheel 400, and the other end passes through the second mounting plate 5232 and is connected to the first limiting nut 524. The elastic member 521 is sleeved on the screw rod, one end of the elastic member 521 abuts against the elastic pressing plate 510, and the other end abuts against the second mounting plate 5232.

[0061] Optionally, a light hole is provided on the second mounting plate 5232, and the second end of the screw rod slides through the light hole.

[0062] The working process of the elastic limiting component 520 is as follows:

[0063] When the elastic pressure plate 510 is not subjected to external force, the first limiting nut 524 abuts against the second mounting plate 5232, so that the elastic pressure plate 510 maintains the first state under the connection of the screw. At this time, materials with smaller particle sizes are discharged through the rotation of the discharge wheel 400 and will not flow out from the gap between the discharge wheel 400 and the elastic pressure plate 510.

[0064] When the elastic pressure plate 510 is subjected to external force (the thrust of the material), the elastic pressure plate 510 will rotate in the direction away from the discharge wheel 400 to allow the material to be discharged smoothly. During this process, the screw slides relative to the second mounting plate 5232, so that the first limit nut 524 is away from the second mounting plate 5232, and the elastic member 521 is compressed to store elastic potential energy. When the external force driving the elastic pressure plate 510 to rotate disappears, under the action of the elastic restoring force of the elastic member 521, the elastic pressure plate 510 will return to the first state.

[0065] The elastic limiting assembly 520 has a simple structure and good working reliability. In addition, by setting the limiting rod 522 as a screw rod, the position of the first limiting nut 524 on the screw rod can be adjusted by screwing the first limiting nut 524, so that the distance between the elastic pressing plate 510 and the top outer edge of the discharge wheel 400 can be adjusted when the elastic pressing plate 510 is in the first state, so as to be suitable for the discharge of different materials, thereby improving the universality of the above-mentioned discharge device.

[0066] It is worth noting that the elastic member 521 may be selected but is not limited to a spring.

[0067] Further, see Figure 2-Figure 4The elastic limiting assembly 520 further includes a connecting seat 525, a first rotating shaft 526 and a connecting block 527. The connecting seat 525 is arranged on the plate surface of the elastic pressing plate 510 away from the discharge wheel 400. The first rotating shaft 526 is penetrated through the connecting seat 525. The connecting block 527 is rotatably connected to the first rotating shaft 526, and one end of the screw is connected to the connecting block 527. The screw and the elastic pressing plate 510 are rotatably connected by setting the connecting seat 525, the first rotating shaft 526 and the connecting block 527. The structure is relatively simple, which is convenient for the installation between the screw and the elastic pressing plate 510, and the screw has better rotation smoothness.

[0068] Optionally, in this embodiment, the second mounting plate 5232 includes a first "V"-shaped sub-plate and a second sub-plate, the first sub-plate is connected to the first mounting plate 5231 and is perpendicular to the first mounting plate 5231, and the other end of the limit rod 522 is passed through the second sub-plate, and the second mounting plate 5232 has a simple and compact structure and occupies a small space. In other embodiments, the shape and structure of the second mounting plate 5232 can also be set to other shapes and structures according to actual needs, and this application does not make specific limitations.

[0069] Optionally, continue to see Figure 2-Figure 4 The elastic pressing plate 510 can be rotatably connected to the first mounting plate 5231 via the second rotating shaft 511, and has a simple structure and better rotation smoothness.

[0070] It is worth noting that since the structure of the discharge wheel 400 and the mechanism for driving the discharge wheel 400 to rotate are both existing technologies, the structure of the discharge wheel 400 and the structure of the mechanism for driving the discharge wheel 400 to rotate are no longer described in detail.

[0071] Embodiment 2

[0072] This embodiment provides a discharging device, which is substantially the same in structure as the first embodiment, and is only improved on the basis of the first embodiment. Therefore, only the differences between the two are described here, and the same structures of this embodiment and the first embodiment are not repeated here.

[0073] Specifically, Figure 5-Figure 7As shown, the elastic limiting assembly 520 of the discharge device also includes a second bracket 528 and a second limiting nut 529. The second bracket 528 is installed on the outer wall of the feed channel 100, and one end of the elastic pressure plate 510 is rotatably connected to the second bracket 528 through the second rotating shaft 511. In this embodiment, the second bracket 528 is a plate-like structure. The elastic member 521 includes a sleeve portion 5211 and two torsion arms 5212. The sleeve portion 5211 is sleeved on the second rotating shaft 511, and the two torsion arms 5212 are respectively abutted against the second bracket 528 and the plate surface of the elastic pressure plate 510 away from the discharge wheel 400. The limiting rod 522 is a screw rod, one end of the screw rod is connected to the plate surface of the elastic pressure plate 510 away from the discharge wheel 400, and the other end is connected to the second limiting nut 529. When the elastic pressure plate 510 is in the first state, the second limiting nut 529 abuts against the outer wall of the discharge channel 200.

[0074] The working process of the elastic limiting component 520 is as follows:

[0075] When the elastic pressure plate 510 is not subjected to external force, the second limiting nut 529 abuts against the outer wall of the discharge channel 200, so that the elastic pressure plate 510 maintains the first state under the connection of the screw. At this time, materials with smaller particle sizes are discharged through the rotation of the discharge wheel 400 and will not flow out from the gap between the discharge wheel 400 and the elastic pressure plate 510.

[0076] When the elastic pressure plate 510 is subjected to external force (the thrust of the material), the elastic pressure plate 510 will rotate in the direction away from the discharge wheel 400 to allow the material to be discharged smoothly. During this process, the second limit nut 529 is away from the outer wall of the discharge channel 200, and the torsion arm 5212 is deformed to store elastic potential energy. When the external force driving the elastic pressure plate 510 to rotate disappears, under the action of the elastic restoring force of the torsion arm 5212, the elastic pressure plate 510 will return to the first state.

[0077] The elastic limiting assembly 520 has a simple structure and good working reliability. In addition, by setting the limiting rod 522 as a screw rod, the position of the second limiting nut 529 on the screw rod can be adjusted by screwing the second limiting nut 529, so that the distance between the elastic pressing plate 510 and the top outer edge of the discharge wheel 400 can be adjusted when the elastic pressing plate 510 is in the first state, so as to be suitable for the discharge of different materials, thereby improving the universality of the above-mentioned discharge device.

[0078] It is worth noting that the elastic member 521 may be, but is not limited to, a torsion spring.

[0079] Optionally, in this embodiment, when the elastic pressure plate 510 is in the first state, the second limiting nut 529 abuts against the outer edge of the observation window 210 .

[0080] Preferably, continue to see Figure 6In this embodiment, the second limiting nut 529 includes a nut body and a flange 5291 arranged around the outer periphery of the nut body, and the flange 5291 abuts against the outer wall of the discharge channel 200 when the elastic pressure plate 510 is in the first state. By providing the flange 5291, the contact area between the second limiting nut 529 and the outer wall of the discharge channel 200 can be increased, thereby improving the reliability of the limiting work of the second limiting nut 529.

[0081] Embodiment 3

[0082] This embodiment provides a ladder flow separator, which includes a separation bed and the discharge device provided in the first or second embodiment. The separation bed transports the material to the feed channel 100 of the discharge device.

[0083] Since the cascade separator adopts the above-mentioned discharging device, it can discharge materials quantitatively, is not easy to get stuck, has a long service life, and has good safety performance.

[0084] It is worth noting that the structure of the sorting bed of the ladder flow sorting machine is prior art and will not be described in detail here.

[0085] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A discharge device, characterized in that: The invention comprises a feed channel (100), a discharge channel (200), a discharge channel (300), a discharge wheel (400) and a material blocking assembly (500); the feed channel (100), the discharge channel (200) and the discharge channel (300) are sequentially connected from top to bottom, and the axis of the feed channel (100) is parallel to the axis of the discharge channel (300) and is staggered; The discharge wheel (400) is arranged in the discharge channel (200), the bottom outer edge of the discharge wheel (400) is tightly fitted with the inner bottom wall of the discharge channel (200), the discharge channel (200) has an observation window (210), the observation window (210) is arranged opposite to the top outer edge of the discharge wheel (400), and there is a gap between the observation window (210) and the top outer edge of the discharge wheel (400); The material blocking assembly (500) includes an elastic pressure plate (510), one end of which is rotatably connected to the outer wall of the feed channel (100), and the other end of which has a first state in which it is close to the top outer edge of the discharge wheel (400) when not subject to external force, and a second state in which the material protruding from the discharge wheel (400) is pushed away from the top outer edge of the discharge wheel (400), and during the process of the elastic pressure plate (510) switching between the first state and the second state, the projection of the elastic pressure plate (510) on the inner top wall of the discharge channel (200) always covers the observation window (210).

2. The discharge device according to claim 1, characterized in that: When the elastic pressure plate (510) is in the first state, the distance between the elastic pressure plate (510) and the top outer edge of the discharge wheel (400) is greater than 0 and less than twice the minimum particle size of the material.

3. The discharge device according to claim 1, characterized in that: The material blocking assembly (500) further includes an elastic limiting assembly (520), wherein the elastic limiting assembly (520) includes an elastic member (521) and a limiting rod (522), wherein the elastic member (521) is configured to always have a movement tendency to push the elastic pressure plate (510) from the second state back to the first state, and the limiting rod (522) is used to keep the elastic pressure plate (510) in the first state when the elastic pressure plate (510) is not subjected to external force.

4. The discharge device according to claim 3, characterized in that: There are multiple elastic limit assemblies (520), and the multiple elastic limit assemblies (520) are arranged at intervals along the length direction of the elastic pressure plate (510), and the length direction of the elastic pressure plate (510) is the extension direction of one end of the elastic pressure plate (510) rotatably connected to the outer wall of the feed channel (100).

5. The discharge device according to claim 3, characterized in that: The elastic limiting assembly (520) further comprises a first bracket (523) and a first limiting nut (524); the first bracket (523) comprises a first mounting plate (5231) and a second mounting plate (5232); the first mounting plate (5231) is fixedly connected to the outer wall of the feeding channel (100); one end of the elastic pressing plate (510) is rotatably connected to one end of the first mounting plate (5231); The limiting rod (522) is a screw rod, one end of which is rotatably connected to the plate surface of the elastic pressure plate (510) facing away from the discharge wheel (400), and the other end of which passes through the second mounting plate (5232) and is connected to the first limiting nut (524); The elastic member (521) is sleeved on the screw rod, one end of the elastic member (521) abuts against the elastic pressure plate (510), and the other end abuts against the second mounting plate (5232).

6. The discharge device according to claim 5, characterized in that: The elastic limiting component (520) further includes: A connecting seat (525) is arranged on a plate surface of the elastic pressing plate (510) facing away from the discharge wheel (400); A first rotating shaft (526) is disposed through the connecting seat (525); A connecting block (527) is rotatably connected to the first rotating shaft (526), ​​and one end of the screw rod is connected to the connecting block (527).

7. The discharge device according to claim 5, characterized in that: The second mounting plate (5232) comprises a first split plate and a second split plate in a "V" shape, the first split plate is connected to the first mounting plate (5231) and is perpendicular to the first mounting plate (5231), and the other end of the limiting rod (522) is passed through the second split plate.

8. The discharge device according to claim 3, characterized in that: The elastic limiting assembly (520) further comprises a second bracket (528) and a second limiting nut (529), wherein the second bracket (528) is mounted on the outer wall of the feeding channel (100), and one end of the elastic pressing plate (510) is rotatably connected to the second bracket (528) via a second rotating shaft (511); The elastic member (521) comprises a sleeve portion (5211) and two torsion arms (5212), wherein the sleeve portion (5211) is sleeved on the second rotating shaft (511), and the two torsion arms (5212) are respectively in contact with the second bracket (528) and the plate surface of the elastic pressure plate (510) facing away from the discharge wheel (400); The limiting rod (522) is a screw rod, one end of which is connected to the plate surface of the elastic pressure plate (510) facing away from the discharge wheel (400), and the other end is connected to the second limiting nut (529). When the elastic pressure plate (510) is in the first state, the second limiting nut (529) abuts against the outer wall of the discharge channel (200).

9. The discharge device according to claim 8, characterized in that: The second limiting nut (529) includes a nut body and a flange (5291) arranged around the outer periphery of the nut body, and the flange (5291) abuts against the outer wall of the discharge channel (200) when the elastic pressure plate (510) is in the first state.

10. A ladder flow separator, characterized in that: It comprises a sorting bed surface and a discharge device according to any one of claims 1 to 9, wherein the sorting bed surface transports materials to a feed channel (100) of the discharge device.

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