Material distribution device and material distribution system

Abstract

The present invention discloses a material distribution device, comprising: a valve body, the valve body having: an inlet located at the top along the height direction of the valve body; a first discharge port and a second discharge port located at the bottom along the height direction; a first side wall that at least partially rises in the height direction along the direction close to the outside of the valve body; a second side wall opposite to the first side wall; a valve plate arranged inside the valve body; the valve plate can be driven to rotate around a rotating shaft, the first discharge port is between the first side wall and the rotating shaft, and the second discharge port is between the second side wall and the rotating shaft; and a baffle plate arranged in the valve body and located above the rotating shaft, the baffle plate rising in the height direction along the direction close to the first side wall. It can meet the requirements of accurately distributing materials dropped at different dropping positions through one inlet.

Description

Technical Field

[0001] The invention relates to the field of material transportation and processing, and in particular to a material distribution device and a material distribution system. Background Art

[0002] In the process of solid material processing and transportation, there is a need to screen and select materials of different particle sizes and specifications. Different conveying channels are configured for the materials screened from the mixed materials to be transported to different storage places or processing equipment.

[0003] A common way of dividing materials is to set a dividing valve, which has a single inlet channel, multiple outlet channels, and a switching valve member for switching the communication between different outlet channels and the inlet channel.

[0004] Obviously, the above-mentioned material distribution valve structure has certain limitations, which restricts different materials to be fed into the valve at a fixed feeding position. In some scenarios, it is difficult to meet the demand for materials to be distributed at different positions. For more than one material entering the distribution valve at different positions, considering the use of multiple single material conveying channels for conveying, it will take up more space, which is not conducive to the compact layout of the equipment, and also increases the manufacturing cost and deadweight load of the equipment. In engineering equipment, too high deadweight load means that more support structures are needed.

[0005] In addition, some material handling and sorting equipment has drop or feed ports that enter the inlet of the divider valve at different positions. If the divider valve only has a single feed port, materials of one specification or type may remain in the divider valve, and when another material enters, mixing occurs, affecting the accuracy and thoroughness of material classification.

[0006] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention

[0007] The present invention aims to provide a technical solution to at least solve one of the problems in the prior art in view of the shortcomings of the background technology.

[0008] One aspect of the above technical solution discloses a material distribution device, comprising:

[0009] A valve body, the valve body comprising: an inlet located at the top along the height direction of the valve body; a first outlet and a second outlet located at the bottom along the height direction; a first side wall that at least partially rises in the direction close to the outside of the valve body in the height direction; and a second side wall opposite to the first side wall;

[0010] A valve plate is disposed inside the valve body; the valve plate can be driven to rotate around the rotating shaft, the first discharge port is between the first side wall and the rotating shaft, and the second discharge port is between the second side wall and the rotating shaft; and

[0011] A baffle plate is disposed in the valve body and above the rotating shaft, and the baffle plate rises in the height direction along a direction close to the first side wall.

[0012] The structure of the feed port is changed, and an inclined side wall is set on at least one side to expand the opening of the feed port, so as to support the feed port to receive materials falling in a larger range, and at the same time, it can also avoid the accumulation of materials on the side wall to a certain extent. The inclined baffle plate set in the valve body is used to separate the material channel inside the valve body into two parts, one part is defined by the first side wall and the other wall parts such as the front side wall and the rear side wall set between the first side wall and the second side wall in cooperation with the baffle plate, and the flow direction of the material will be the oblique downward direction guided by the first side wall and the baffle plate; the other part is defined by the other wall parts such as the front side wall and the rear side wall set between the first side wall and the second side wall in cooperation with the baffle plate and the second side wall, and the flow direction of the material falling at the baffle plate position will also be obliquely downward. Obviously, these two parts of the channel are interconnected below the baffle plate. By controlling the connection between the two, one feed port can realize two functions. When the two channels are connected, the feed port can be used as a separate valve body inlet for receiving materials. When the connection between the two channels is cut off or closed, the feed port is divided into two valve body inlets for receiving materials. It can receive materials of different types and specifications. This design does not increase the space occupied by the valve body, which is conducive to ensuring the compact layout of the equipment as a whole.

[0013] In coordination, a valve plate is provided, and the connection relationship between the valve body part above the rotating shaft and the valve body part below the rotating shaft can be adjusted by rotating the valve plate, that is, the connection of a single discharge port is realized. Thus, it can cooperate with the aforementioned baffle to support the needs in different scenarios. For example, the two parts of the material channel separated by the baffle plate are not connected, and the material enters the valve body from one part of the material channel, and then the valve plate switches the discharge port according to the demand; for another example, the two parts of the material channel separated by the baffle plate are connected to each other, and the material enters the valve body from the entire feed port at the same time, and then the valve plate switches the discharge port according to the demand. Thus, the material separation can be carried out flexibly, and for the material classification needs with high requirements on the accuracy of material separation, different materials can be classified through a single material channel to reduce the possibility of mixing.

[0014] As a preferred configuration, it is very reasonable to use a baffle to control the connectivity of the two material channels separated by the baffle, and it can achieve more complete functions with fewer parts. This configuration will be described in detail later.

[0015] In a preferred implementation, the baffle extends from the inlet toward the interior of the valve body.

[0016] As for the position of the baffle, the baffle can be set inside the valve body, and its upper end can be lower than the upper edge of the feed inlet, and a more suitable configuration is to make the upper end of the baffle flush with the upper edge of the feed inlet. In this way, the upper part of the valve body close to the inlet will be completely isolated into two parts. When it is desired that the material enters the valve body only from other wall parts such as the front side wall and the rear side wall defined by the baffle and the second side wall that are arranged between the first side wall and the second side wall, such a setting is advantageous and can maximize the range of the baffle to receive the material. In some implementations, the baffle can also protrude from the upper edge of the feed inlet, and the "baffle is located in the valve body" mentioned above should be understood as a part of the baffle being fixedly connected to a certain part of the internal structure of the valve body, and the baffle is not necessarily contained in the valve body as a whole.

[0017] In a preferred implementation, the baffle is parallel or substantially parallel to the first side wall.

[0018] Considering the role of the baffle disclosed above, it is reasonable and advantageous to make the baffle parallel or roughly parallel to the first side wall, which also allows the baffle to have a larger material receiving area, and the material channel defined by the parallel wall structure can obtain a smooth material flow effect. As another optional implementation method, the arrangement angle of the baffle can of course be slightly different from the first side wall. For example, the baffle is arranged at a greater inclination angle than the first side wall, so that the material channel defined by the two is a downwardly open structure; or the baffle is arranged at a smaller inclination angle than the first side wall, so that the material channel defined by the two is a downwardly contracted structure, which will be able to improve the flow capacity of the material from other wall portions such as the front side wall and the rear side wall defined by the baffle and the second side wall between the first side wall and the second side wall. However, considering the need to simultaneously ensure the material flow capacity on the other side, the difference in inclination angle between the baffle and the first side wall should be controlled within a certain range. Comprehensively considered, it will be advantageous for the inclination angle difference between the baffle and the first side wall to be between ±10°.

[0019] In a preferred implementation, the valve plate has a connecting end connected to the rotating shaft and a free end opposite to the connecting end; the baffle extension distance defined by the connecting end and the free end is not less than the distance from the lowest end of the baffle in the height direction to the surface of the rotating shaft.

[0020] By setting the size of the valve plate, the purpose of controlling the connection of the two parts of the material flow channel separated by the baffle can be achieved through the rotation of the valve plate. The valve plate simultaneously controls the composition of the material channel in the valve body above the rotating shaft. For example, the part of the material channel separated by the baffle can receive the falling material, and then the valve plate also switches the discharge port for the material to flow out. Alternatively, the valve plate further cooperates to separate the valve body above the rotating shaft. When the two parts of the material channel separated by the baffle are connected, the part of the material channel between the baffle and the second side wall is separated by the valve plate, that is, a single material flows from the material channel defined between the valve plate and the first side wall to the discharge port switched open by the valve plate, such as the first outlet. Alternatively, the valve plate cooperates with the baffle to close the connection of the channel below the baffle, and the material flows from the material channel defined between the wall formed by the valve plate and the baffle and the second side wall to the discharge port switched open by the valve plate, such as the second outlet.

[0021] In a preferred implementation, the valve plate is driven to rotate around the rotating shaft and has at least a first angle and a second angle; when rotated to the first angle, the free end of the valve plate will contact the baffle; when rotated to the second angle, the free end of the valve plate is located above the rotating shaft in the height direction, and the free end of the valve plate is farther away from the first side wall than the rotating shaft.

[0022] As a more detailed description, the above implementation method specifically illustrates a working method of the valve plate, where the two working positions of the valve plate are limited by the active angle. When the valve plate is rotated to the first working angle, the lower end of the valve plate and the baffle overlap or dock to form a wall portion, and the channel below the closed baffle is connected. At this time, the material is supported to be received between the wall portion formed by the valve plate and the baffle and the second side wall, and the material is discharged through the second discharge port, thereby realizing the material drop at the first position, and the separated first material will flow from the material channel defined in the above scenario. When the valve plate is rotated to the second angle, the channel below the baffle is connected, supporting the material to be received between the valve plate and the first side wall, and the material is discharged through the first discharge port, thereby realizing the material drop at the second position, and the separated second material will flow from the material channel defined in the above scenario. Obviously, in both scenarios, the material is received within a relatively large range, and the expanded material receiving range means reducing the material from falling by the wayside, reducing the mixing of external bulk materials and materials inside different material channels. Through the cooperation of the valve plate and the baffle, it is possible to support both materials in a large range within the limited layout space, effectively improving the space utilization rate and the compactness of the equipment layout. In addition, different materials can be reliably received when they fall from different positions. The switching of the conveying channels of different materials only needs to be switched by adjusting the rotation angle of the valve plate, which is very simple. In fact, the switching of the valve plate can be linked with the opening of different materials falling at different positions, so as to quickly and reliably perform the material separation operation.

[0023] In a preferred implementation, an edge of the first discharge port close to the first side wall is located within a projection of the baffle in the height direction.

[0024] In conjunction with the aforementioned implementation method, a more reliable setting method is to allow the first discharge port to be covered by a baffle. The benefit of such a setting is that when the material falls from between the baffle and the second side wall, the material is prevented from being scattered to the first discharge port to the greatest extent, and some of the material is prevented from being screened and transported to unexpected equipment or places. It can be said that another layer of protection is formed, especially in special material processing processes. The material classification method will cause the material to fall not vertically due to inertia when it falls. At this time, it is a very reliable setting to prevent the falling material from falling into the first discharge port when the first discharge port is not started by using an inclined baffle. A typical material screening method is to use a drum screen structure to screen the material. The drum speed and direction determine the location of the material falling and the specifications of the falling material. The aforementioned material distribution device is set in the drum screen structure, which can adaptively distribute the material screened by the drum screen structure.

[0025] A more specific application scenario is the equipment for recycling concrete aggregates in the emerging industry of construction waste classification. The material screening structure commonly used in the industry for the aggregate recovery device is a drum screen-type lifting trough. The material separation device disclosed in the previous article is suitable for use in the drum-type lifting trough arranged in the aggregate recovery equipment. The composition of the aggregate recovery device has been fully disclosed in the relevant technical field. This manual will no longer repeat its complete working principle, but only introduce the relevant lifting trough structure. The specific application will be disclosed below.

[0026] Another aspect of the above scheme discloses a material distribution system; comprising:

[0027] The aforementioned material distribution device; and

[0028] The material screening device comprises a rotatable drum, and receiving grooves axially distributed along the inner wall of the drum and opening toward the inside of the drum;

[0029] Wherein, the material distribution device is located inside the barrel.

[0030] Obviously, the material separation devices in the various implementation methods disclosed above can perform the material separation operation well and deliver different materials to different equipment or places in cooperation with the drum-type material screening device to realize the screening method of different types of materials falling at different positions. For example, the material screening device has two material dropping positions, which respectively screen out two different types of materials, such as aggregates of different specifications for concrete aggregate recycling, including coarse aggregate and fine aggregate, and the material separation device receives the falling materials at different positions, and when receiving materials at different material dropping positions, the baffle and valve plate configured by the material separation device provide a larger range for receiving materials, and effectively utilize the space, and will not occupy too much space inside the material screening device.

[0031] In a preferred implementation, the axis of rotation of the drum is parallel or substantially parallel to the rotating shaft.

[0032] It is an advantageous arrangement to arrange the barrel of the material screening device roughly coaxially with the rotating shaft. The boundary of the material flow range of the falling material in the barrel will be parallel to the radial direction of the barrel. By setting the rotating shaft parallel, the boundary of the range of receiving materials defined by the valve plate is also parallel to the radial direction of the barrel. Such an arrangement will improve the compactness of the device and the valve body of the powder device can be arranged within the minimum allowable size. More preferably, the extension surfaces of the first side wall, the second side wall, the baffle plate and the valve plate are also parallel or roughly parallel to the axis of the barrel.

[0033] In a preferred implementation, the top end of the baffle is offset from the center of the tube and close to the first side of the tube, and the first side wall is offset from the center of the tube and close to the first side of the tube.

[0034] Since the baffle works when the channel connection below it is cut off, its top end is arranged on the side of the drum close to the first side wall. The falling range of the drum screening method will never exceed the vertical center of the drum. Such an arrangement will be able to better receive the material.

[0035] In a preferred implementation, when the drum rotates in a first direction, the material screening device separates a first material group whose particle size or single grain weight is in a first range from the mixed material input into the material screening device; when the drum rotates in a second direction opposite to the first direction, the material screening device separates a second material group whose particle size or single grain weight is in a second range from the mixed material input into the material screening device, and the minimum value of the first range is greater than the maximum value of the second range;

[0036] The valve plate is configured or driven to rotate to the first angle when the cylinder rotates in the first direction, and the drop area of ​​the first material group is between the baffle plate and the second side wall; when the cylinder rotates in the second direction, it is configured to rotate to the second angle, and the drop area of ​​the second material group is between the valve plate and the first side wall.

[0037] The above-mentioned implementation method reveals the coordination between the rotation of the drum and the material dividing device. The drum rotates at two different angles, so that the material falls at two different positions, and the material dividing device is adjusted accordingly to receive two kinds of materials at these two positions. The material screening device is, for example, a drum screening structure for concrete aggregate recycling. It controls the direction and speed to provide centrifugal force, and then allows the material that can resist the centrifugal force to fall at an appropriate position. At this time, the material falls inside the drum, and a corresponding material dividing device needs to be set up to receive the material inside the drum. Therefore, while being able to meet the requirements of receiving and dividing two or more materials of different specifications, it is also necessary to consider minimizing the internal space of the drum occupied by the material dividing device as much as possible. The material dividing device mentioned in the various implementation methods disclosed in the previous text of this specification and the coordination method between the material dividing device and the material screening device are in line with this implementation intention and meet the requirements of this application scenario.

[0038] In a preferred implementation, the material screening device further comprises annular plates disposed at both ends of the cylinder, and a partition connecting the inner wall of the cylinder and the annular plates.

[0039] In order to more clearly reveal the drum screening structure, the conventional structure of the drum is introduced. A receiving groove is formed along the axial direction of the drum through the partition inside the drum, and the mixed material at the bottom of the drum is rotated and lifted along the circumference. Under the action of the partition and centrifugal force, the material will be lifted to the specified height and position before falling (achieved by setting the arrangement angle and rotation speed of the partition), thereby achieving the purpose of lifting and screening the material at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0041] Figure 1 A schematic diagram of the forward structure of a material distributing device in one embodiment of the present invention is depicted.

[0042] Figure 2 A schematic diagram of the lateral structure of a material distributing device in one embodiment of the present invention is depicted.

[0043] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of part I in the middle.

[0044] Figure 4 A forward structural schematic diagram of a material distribution system in one embodiment of the present invention is depicted.

[0045] Figure 5 A lateral structural schematic diagram of a material distribution system in one embodiment of the present invention is depicted.

[0046] Description of reference numerals:

[0047] 1-valve body, 11-mounting plate, 12-front and rear wall plates, 13-first side wall, 14-baffle plate;

[0048] C-second discharge port, D-first discharge port;

[0049] 2-floating liner, 21-liner, 22-screw;

[0050] 3-spring mechanism, 31-shaft sleeve, 32-compression spring;

[0051] 4-fastening assembly, 41-material flow fixed liner fastening assembly, 42-floating liner fastening assembly;

[0052] 5-material guiding mechanism, 51-turning plate, 52-upper lining plate, 53-lower lining plate, 54-rotating shaft;

[0053] 6-driving mechanism, 61-crank, 62-driving cylinder, 63-expansion sleeve;

[0054] 7- Chute (second side wall). DETAILED DESCRIPTION

[0055] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0056] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0057] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0060] Combination Figures 1 to 5 In one implementation of the present invention, a material distribution device is disclosed, comprising:

[0061] Valve body 1, such as Figure 1 and Figure 4 The valve body 1 has: an inlet located at the top in the height direction of the valve body 1; a first outlet D and a second outlet C located at the bottom in the height direction; a first side wall 13 that is at least partially raised in the height direction in the direction close to the outside of the valve body; and a second side wall 7 opposite to the first side wall 13;

[0062] A valve plate 51 is disposed inside the valve body 1; the valve plate 51 can be driven to rotate around a rotating shaft 54, the first discharge port D is between the first side wall 13 and the rotating shaft 54, and the second discharge port C is located between the second side wall 7 and the rotating shaft 54; and

[0063] The baffle plate 14 is disposed in the valve body 1 and is located above the rotating shaft 54 ​​. The baffle plate 14 rises in the height direction along a direction close to the first side wall 13 .

[0064] In the above structure, by changing the structure of the valve body feed port, setting an inclined side wall on at least one side, and expanding the opening of the feed port, the feed port is supported to receive materials falling in a larger range, and at the same time, the accumulation of materials on the side wall can be avoided to a certain extent. The inclined baffle plate arranged on the valve body is used to separate the material channel inside the valve body into two parts, one part is defined by the first side wall and other wall parts such as the front side wall and the rear side wall arranged between the first side wall and the second side wall in cooperation with the baffle plate, and the flow direction of the material will be the oblique downward direction guided by the first side wall and the baffle plate; the other part is defined by other wall parts such as the front side wall and the rear side wall arranged between the first side wall and the second side wall in cooperation with the baffle plate and the second side wall, and the flow direction of the material falling at the baffle plate position will also be the oblique downward direction. Obviously, these two parts of the channel are interconnected below the baffle plate. By controlling the connection between the two, one feed port can realize two functions. When the two channels are connected, the feed port can be used as a separate valve body inlet for receiving materials. When the connection between the two channels is cut off or closed, the feed port is divided into two valve body inlets for receiving materials. It can receive materials of different types and specifications. This design does not increase the space occupied by the valve body, which is conducive to ensuring the compact layout of the equipment as a whole.

[0065] In coordination, a valve plate is provided, and the connection relationship between the valve body part above the rotating shaft and the valve body part below the rotating shaft can be adjusted by rotating the valve plate, that is, the connection of a single discharge port is realized. Thus, it can cooperate with the aforementioned baffle to support the needs in different scenarios. For example, the two parts of the material channel separated by the baffle plate are not connected, and the material enters the valve body from one part of the material channel, and then the valve plate switches the discharge port according to the demand; for another example, the two parts of the material channel separated by the baffle plate are connected to each other, and the material enters the valve body from the entire feed port at the same time, and then the valve plate switches the discharge port according to the demand. Thus, the material separation can be carried out flexibly, and for the material classification needs with high requirements on the accuracy of material separation, different materials can be classified through a single material channel to reduce the possibility of mixing.

[0066] As a preferred configuration, it is very reasonable to use a baffle to control the connectivity of the two material channels separated by the baffle, and it can achieve more complete functions with fewer parts. This configuration will be described in detail later.

[0067] In addition, it can also include auxiliary structures such as those shown in the figure, which are used to fix the support mounting plate 11, and fix the valve body 1 on a columnar support frame (not shown) through the mounting plate 11 and the connecting piece. The front and rear wall plates 12 cooperate with the first side wall 13 and the second side wall 7 to jointly define a material channel with upper and lower openings. As shown in the figure, the upper edges of the front and rear wall plates 12 in the valve body can be set to an upward convex arc structure, which can increase the material holding capacity and reduce overflow, and also fit the rotation trajectory of the valve plate, allowing the valve plate to rotate inside the valve body.

[0068] A floating liner 2 is arranged inside the front and rear side plates, including a liner 21 and a screw 22, which are welded, for example; a spring mechanism 3 includes a sleeve 31 and a compression spring 32. The function of the spring mechanism 3 is to make the floating liner automatically fit with the rotating shaft and the valve plate 51, thereby eliminating the gap between the inner wall of the valve body 1 and the valve plate 51. The spring may be a metal spring or an air spring.

[0069] In addition, in order to protect the valve plate 51, an upper lining plate 52 and a lower lining plate 53 are provided to withstand the impact of materials and extend the service life of the valve plate 51. The lining plate is made of wear-resistant materials such as ductile iron or high-strength rubber plates of buffer materials; the valve plate 51, the upper lining plate 52, the lower lining plate 53, and the rotating shaft 54 ​​together constitute the material guiding mechanism 5.

[0070] In addition, a fastening assembly 4 may be included, including a material flow fixed liner fastening assembly 41 and a floating liner fastening assembly 42. The fixed liner installed on both sides of the first side plate and the valve plate uses the material flow fixed liner fastening assembly, and the floating liner used in the front and rear wall plates uses the floating liner fastening assembly.

[0071] The rotation of the valve plate 51 is achieved through the driving mechanism 6 shown in the figure, which includes a crank 61, a driving cylinder 62, and an expansion sleeve 63; the rotating shaft 54 ​​passes through the side wall of the valve body and is connected to the driving mechanism, the crank 61 is connected to the rotating shaft 54 ​​through the expansion sleeve 63, and the driving cylinder 62 is connected to the rotating shaft 54 ​​through the crank 61, thereby driving the valve plate 51 in the material guiding mechanism to flip.

[0072] Through the auxiliary structure, the baffle, valve body and valve plate form a discharge chute. The material enters the valve body from the inlet, and the valve plate can rotate between the front and rear wall plates, wherein one side of the shaft passes through the wall plates on either side of the front and rear and is connected to the driving mechanism. The driving cylinder of the driving mechanism drives the shaft to drive the flap to flip to the first discharge port D or the second discharge port C. The floating lining plate on the inner wall of the valve body applies a certain pre-tightening force through the spring mechanism, so that the floating lining plate can automatically fit the valve plate, which plays the role of axial sealing and buffering, reduces the wear of the valve plate, and prolongs the life of the flap.

[0073] As shown in the figure, the baffle 14 extends from the feed inlet to the inside of the valve body 1. In other words, the upper end of the baffle is flush with the upper edge of the feed inlet. In this way, the upper part of the valve body close to the inlet will be completely isolated into two parts. When it is desired that the material enters the valve body only from the partial channel defined by other wall parts such as the front side wall and the rear side wall that are arranged between the first side wall and the second side wall by the cooperation of the baffle and the second side wall, such a setting is advantageous and can maximize the range of the baffle to receive the material. In some implementations, the baffle may also protrude from the upper edge of the feed inlet, and the aforementioned "baffle is located in the valve body" should be understood as a part of the baffle being fixedly connected to a certain internal structure of the valve body, and it is not necessarily the case that the entire baffle is accommodated in the valve body.

[0074] In addition, refer to Figure 1 The baffle 14 and the first side wall 13 are preferably arranged parallel or substantially parallel.

[0075] Considering the role of the baffle disclosed above, it is reasonable and advantageous to make the baffle parallel or roughly parallel to the first side wall, which also allows the baffle to have a larger material receiving area, and the material channel defined by the parallel wall structure can obtain a smooth material flow effect. As another optional implementation method, the arrangement angle of the baffle can of course be slightly different from the first side wall. For example, the baffle is arranged at a greater inclination angle than the first side wall, so that the material channel defined by the two is a downwardly open structure; or the baffle is arranged at a smaller inclination angle than the first side wall, so that the material channel defined by the two is a downwardly contracted structure, which will be able to improve the flow capacity of the material from other wall portions such as the front side wall and the rear side wall defined by the baffle and the second side wall between the first side wall and the second side wall. However, considering the need to simultaneously ensure the material flow capacity on the other side, the difference in inclination angle between the baffle and the first side wall should be controlled within a certain range. Comprehensively considered, it will be advantageous for the inclination angle difference between the baffle and the first side wall to be between ±10°.

[0076] In a preferred implementation, further in conjunction with the accompanying drawings, the valve plate 51 has a connection end connected to the rotating shaft 54 ​​and a free end opposite to the connection end; the baffle extension distance defined by the connection end and the free end is not less than the distance from the lowest end of the baffle 51 in the height direction to the surface of the rotating shaft 54. In other words, the extension distance of the valve plate is sufficient to enable it to at least contact the baffle 14 during its rotation.

[0077] By setting the size of the valve plate, the purpose of controlling the connection of the two parts of the material flow channel separated by the baffle can be achieved through the rotation of the valve plate. The valve plate simultaneously controls the composition of the material channel in the valve body above the rotating shaft. For example, the part of the material channel separated by the baffle can receive the falling material, and then the valve plate also switches the discharge port for the material to flow out. Alternatively, the valve plate further cooperates to separate the valve body above the rotating shaft. When the two parts of the material channel separated by the baffle are connected, the part of the material channel between the baffle and the second side wall is separated by the valve plate, that is, a single material flows from the material channel defined between the valve plate and the first side wall to the discharge port switched open by the valve plate, such as the first outlet. Alternatively, the valve plate cooperates with the baffle to close the connection of the channel below the baffle, and the material flows from the material channel defined between the wall formed by the valve plate and the baffle and the second side wall to the discharge port switched open by the valve plate, such as the second outlet.

[0078] Combination Figure 1 and Figure 4, the valve plate 51 is driven to rotate around the rotating shaft 54 ​​and has at least a first angle (the valve plate is at the position indicated by A in the figure) and a second angle (the valve plate is at the position indicated by B in the figure); when rotated to the first angle, the free end of the valve plate 51 will contact the baffle; when rotated to the second angle, the free end of the valve plate 51 is located above the rotating shaft 54 ​​in the height direction, and the free end of the valve plate 51 is farther away from the first side wall 13 than the rotating shaft 54.

[0079] As a more detailed description, the above implementation method specifically illustrates a working method of the valve plate, where the two working positions of the valve plate are limited by the active angle. When the valve plate is rotated to the first working angle, the lower end of the valve plate and the baffle overlap or dock to form a wall portion, and the channel below the closed baffle is connected. At this time, the material is supported to be received between the wall portion formed by the valve plate and the baffle and the second side wall, and the material is discharged through the second discharge port, thereby realizing the material drop at the first position, and the separated first material will flow from the material channel defined in the above scenario. When the valve plate is rotated to the second angle, the channel below the baffle is connected, supporting the material to be received between the valve plate and the first side wall, and the material is discharged through the first discharge port, thereby realizing the material drop at the second position, and the separated second material will flow from the material channel defined in the above scenario. Obviously, in both scenarios, the material is received within a relatively large range, and the expanded material receiving range means reducing the material from falling by the wayside, reducing the mixing of external bulk materials and materials inside different material channels. Through the cooperation of the valve plate and the baffle, it is possible to support both materials in a large range within the limited layout space, effectively improving the space utilization rate and the compactness of the equipment layout. In addition, different materials can be reliably received when they fall from different positions. The switching of the conveying channels of different materials only needs to be switched by adjusting the rotation angle of the valve plate, which is very simple. In fact, the switching of the valve plate can be linked with the opening of different materials falling at different positions, so as to quickly and reliably perform the material separation operation.

[0080] As shown in the figure, the edge of the first discharge port D close to the first side wall 13 is located within the projection of the baffle 14 in the height direction.

[0081] In conjunction with the aforementioned implementation method, a more reliable setting method is to allow the first discharge port to be covered by a baffle. The benefit of such a setting is that when the material falls from between the baffle and the second side wall, the material is prevented from being scattered to the first discharge port to the greatest extent, and some of the material is prevented from being screened and transported to unexpected equipment or places. It can be said that another layer of protection is formed, especially in special material processing processes. The material classification method will cause the material to fall not vertically due to inertia when it falls. At this time, it is a very reliable setting to prevent the falling material from falling into the first discharge port when the first discharge port is not started by using an inclined baffle. A typical material screening method is to use a drum screen structure to screen the material. The drum speed and direction determine the location of the material falling and the specifications of the falling material. The aforementioned material distribution device is set in the drum screen structure, which can adaptively distribute the material screened by the drum screen structure.

[0082] A more specific application scenario is the equipment for recycling concrete aggregates in the emerging industry of construction waste classification. The material screening structure commonly used in the industry for the aggregate recovery device is a drum screen-type lifting trough. The material separation device disclosed in the previous article is suitable for use in the drum-type lifting trough arranged in the aggregate recovery equipment. The composition of the aggregate recovery device has been fully disclosed in the relevant technical field. This manual will no longer repeat its complete working principle, but only introduce the relevant lifting trough structure. The specific application will be disclosed below.

[0083] refer to Figure 4 and Figure 5 , depicting a material distribution system; comprising:

[0084] The aforementioned material distribution device; and

[0085] The material screening device (annular structure indicated by dotted lines in the figure) comprises a rotatable barrel and a receiving groove axially distributed along the inner wall of the barrel with an opening facing the inside of the barrel;

[0086] The material distribution device is located inside the cylinder.

[0087] Obviously, the material separation devices in the various implementation methods disclosed above can perform the material separation operation well and deliver different materials to different equipment or places in cooperation with the drum-type material screening device to realize the screening method of different types of materials falling at different positions. For example, the material screening device has two material dropping positions, which respectively screen out two different types of materials, such as aggregates of different specifications for concrete aggregate recycling, including coarse aggregate and fine aggregate, and the material separation device receives the falling materials at different positions, and when receiving materials at different material dropping positions, the baffle and valve plate configured by the material separation device provide a larger range for receiving materials, and effectively utilize the space, and will not occupy too much space inside the material screening device.

[0088] In a preferred implementation, the axis of rotation of the drum is parallel or substantially parallel to the rotating shaft.

[0089] It is an advantageous arrangement to arrange the barrel of the material screening device roughly coaxially with the rotating shaft. The boundary of the material flow range of the falling material in the barrel will be parallel to the radial direction of the barrel. By setting the rotating shaft parallel, the boundary of the range of receiving materials defined by the valve plate is also parallel to the radial direction of the barrel. Such an arrangement will improve the compactness of the device and the valve body of the powder device can be arranged within the minimum allowable size. More preferably, the extension surfaces of the first side wall, the second side wall, the baffle plate and the valve plate are also parallel or roughly parallel to the axis of the barrel.

[0090] As shown in the figure, the top end of the baffle 14 is offset from the center of the cylinder and close to the first side of the cylinder (the left side in the figure), and the first side wall 13 is offset from the center of the cylinder and close to the first side of the cylinder (the left side in the figure).

[0091] Since the baffle works when the channel connection below it is cut off, its top end is arranged on the side of the drum close to the first side wall. The falling range of the drum screening method will never exceed the vertical center of the drum. Such an arrangement will be able to better receive the material.

[0092] Referring to the accompanying drawings, when the drum of the material screening device rotates in a first direction (counterclockwise in the figure), a first material group whose particle size or single particle weight is within a first range is separated from the mixed material put into the material screening device; when the drum of the material screening device rotates in a second direction (clockwise in the figure) opposite to the first direction, a second material group whose particle size or single particle weight is within a second range is separated from the mixed material put into the material screening device, wherein the minimum value of the first range is greater than the maximum value of the second range;

[0093] Correspondingly, the valve plate 51 is configured or driven to rotate to a first angle (at position A) when the cylinder rotates in a first direction, and the drop area of ​​the first material group is between the baffle 14 and the second side wall 7; when the cylinder rotates in a second direction, it rotates to a second angle (at angle B), and the drop area of ​​the second material group is between the valve plate 51 and the first side wall 13.

[0094] The above-mentioned implementation method reveals the coordination between the rotation of the drum and the material dividing device. The drum rotates at two different angles, so that the material falls at two different positions, and the material dividing device is adjusted accordingly to receive two kinds of materials at these two positions. The material screening device is, for example, a drum screening structure for concrete aggregate recycling. It controls the direction and speed to provide centrifugal force, and then allows the material that can resist the centrifugal force to fall at an appropriate position. At this time, the material falls inside the drum, and a corresponding material dividing device needs to be set up to receive the material inside the drum. Therefore, while being able to meet the requirements of receiving and dividing two or more materials of different specifications, it is also necessary to consider minimizing the internal space of the drum occupied by the material dividing device as much as possible. The material dividing device mentioned in the various implementation methods disclosed in the previous text of this specification and the coordination method between the material dividing device and the material screening device are in line with this implementation intention and meet the requirements of this application scenario.

[0095] The material screening device, for example, further includes annular plates disposed at both ends of the cylinder, and a partition connecting the inner wall of the cylinder and the annular plates.

[0096] In order to more clearly reveal the drum screening structure, the conventional structure of the drum is introduced. A receiving groove is formed along the axial direction of the drum through the partition inside the drum, and the mixed material at the bottom of the drum is rotated and lifted along the circumference. Under the action of the partition and centrifugal force, the material will be lifted to the specified height and position before falling (achieved by setting the arrangement angle and rotation speed of the partition), thereby achieving the purpose of lifting and screening the material at the same time.

[0097] For example, in a specific application, it is used for concrete aggregate recovery. When the material screening device (or lifting trough) rotates clockwise, the fine aggregate will be discharged from the first side wall of the material distribution device and the valve plate through one side outlet to the fine aggregate conveying device, and the fine aggregate will be sent away. When the lifting trough rotates counterclockwise, the coarse aggregate will be guided and restricted by the baffle plate, the valve plate and the second side wall, and discharged from the other side outlet to the chute 7 (the second side wall and the side wall that cooperates with the second side wall to form a material channel), and the coarse aggregate will be sent away.

Claims

1. A material distribution device, characterized in that: include: A valve body, the valve body comprising: an inlet located at the top along the height direction of the valve body; a first outlet and a second outlet located at the bottom along the height direction; a first side wall that at least partially rises in the direction close to the outside of the valve body in the height direction; and a second side wall opposite to the first side wall; A valve plate is disposed inside the valve body; the valve plate can be driven to rotate around the rotating shaft, the first discharge port is between the first side wall and the rotating shaft, and the second discharge port is between the second side wall and the rotating shaft; and a baffle plate disposed in the valve body and located above the rotating shaft, the baffle plate rising in the height direction in a direction close to the first side wall; The valve plate has a connecting end connected to the rotating shaft and a free end opposite to the connecting end; the extending distance of the baffle defined by the connecting end and the free end is not less than the distance from the lowest end of the baffle in the height direction to the surface of the rotating shaft; The valve plate is driven to rotate around the rotating shaft and has at least a first angle and a second angle; when rotating to the first angle, the free end of the valve plate will contact the baffle; when rotating to the second angle, the free end of the valve plate is located above the rotating shaft in the height direction, and the free end of the valve plate is farther away from the first side wall than the rotating shaft; The baffle extends from the feed inlet toward the inside of the valve body, the baffle is parallel or substantially parallel to the first side wall, and the difference in inclination angle between the baffle and the first side wall is between ±10°.

2. The material distribution device according to claim 1, characterized in that: The edge of the first discharge port close to the first side wall is located within the projection of the baffle in the height direction.

3. A material distribution system, characterized in that: include: The material distribution device according to claim 1 or 2; as well as The material screening device comprises a rotatable drum, and receiving grooves axially distributed along the inner wall of the drum and opening toward the inside of the drum; Wherein, the material distribution device is located inside the barrel.

4. The material distribution system according to claim 3, characterized in that: The axis of rotation of the drum is parallel or substantially parallel to the rotating shaft.

5. The material distribution system according to claim 4, characterized in that: The top end of the baffle is offset from the center of the tube and close to the first side of the tube, and the first side wall is offset from the center of the tube and close to the first side of the tube.

6. The material distribution system according to claim 5, characterized in that: When the drum rotates in a first direction, the material screening device separates a first material group whose particle size or single grain weight is within a first range from the mixed material put into the material screening device; when the drum rotates in a second direction opposite to the first direction, the material screening device separates a second material group whose particle size or single grain weight is within a second range from the mixed material put into the material screening device, and the minimum value of the first range is greater than the maximum value of the second range; The valve plate is configured or driven to rotate to the first angle when the cylinder rotates in the first direction, and the drop area of ​​the first material group is between the baffle plate and the second side wall; when the cylinder rotates in the second direction, it is configured to rotate to the second angle, and the drop area of ​​the second material group is between the valve plate and the first side wall.

7. The material distribution system according to claim 6, characterized in that: The minimum value of the first range is greater than the maximum value of the second range.

8. The material distribution system according to claim 6, characterized in that: The material screening device also includes annular plates arranged at both ends of the cylinder, and a partition connecting the inner wall of the cylinder and the annular plates.

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