Screening chute
By designing a removable liner and a filter hole structure for the screening chute, the problem of separating coal and impurities was solved, improving coal quality and equipment operating efficiency, and reducing energy consumption and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-03-31
AI Technical Summary
Existing coal mine conveying equipment lacks screening capabilities, resulting in the inability to effectively separate coal and impurities, affecting coal quality and increasing equipment wear. Furthermore, it is prone to clogging during the conveying of wet or sticky coal, reducing conveying efficiency.
Design a screening chute comprising a removable liner and filter holes of different apertures, combined with insert plates, slots and snap-fit components, to achieve efficient classification and screening of coal and impurities, and improve impurity collection capacity by using an inclined collection box for easy cleaning.
It achieves efficient separation and grading of coal and impurities, reduces equipment wear, improves production efficiency and ease of operation, and reduces energy consumption and maintenance costs.
Smart Images
Figure CN224057931U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mining conveying equipment technology, and in particular to a screening chute. Background Technology
[0002] During coal mining and processing, raw coal often contains a large number of impurities, such as coal gangue, mud, and gravel. The presence of these impurities directly affects the purity of the coal and the quality of subsequent processing. Traditional coal mine conveying equipment mainly uses ordinary chutes to transport coal by gravity. These chutes have a simple structure and rely primarily on the material's own weight for transport. However, these chutes lack screening capabilities during transport, making it impossible to effectively separate and classify coal and impurities. This results in impurities mixing into the coal, which not only reduces coal quality but also increases energy consumption and difficulty in subsequent processing.
[0003] Furthermore, because coal and impurities are not separated in a timely manner, the impurities will exacerbate equipment wear and tear, increase maintenance costs, and affect production efficiency during subsequent crushing, screening, and washing processes. This is especially true in the conveying of wet or sticky coal, where these chutes are prone to clogging, further reducing conveying efficiency and screening quality. Utility Model Content
[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.
[0005] In view of the problems existing in the above and / or prior art, the present invention is proposed.
[0006] Therefore, the technical problem to be solved by this utility model is a screening chute that can achieve efficient separation and grading of coal and impurities during coal mine transportation, so as to optimize the coal mine production process and reduce unnecessary energy consumption and equipment wear.
[0007] To solve the above technical problems, this utility model provides the following technical solution: a screening chute, including a chute body, a placement groove is provided on the upper surface of the chute body, and through grooves are symmetrically provided on the front and rear sides of the bottom of the placement groove. A liner is laid inside the placement groove, and small-diameter filter holes and large-diameter filter holes are respectively provided at the front and rear ends of the liner body, and the small-diameter filter holes and large-diameter filter holes are respectively located directly above the two through grooves. An installation frame is fixedly installed at the bottom of the chute body, and slots are symmetrically provided at the left and right ends of the connection between the upper surface of the installation frame and the lower surface of the chute body. Insert plates adapted to the two slots are symmetrically installed at the left and right ends of the bottom of the liner. A snap-fit component is provided at the center of the installation frame, and the two insert plates are limited and fixed in the two slots by the snap-fit component.
[0008] In a preferred embodiment of the screening chute of this utility model, the front and rear ends of the mounting frame are provided with sliding grooves, and a collection box is slidably connected in each of the two sliding grooves, and the two collection boxes are located directly below the two through grooves.
[0009] In a preferred embodiment of the screening chute of this utility model, the interiors of the two collection boxes are inclined, and the inclination direction of the collection boxes is consistent with the inclination direction of the chute body, and handles are fixedly installed on the right outer wall of both collection boxes.
[0010] In a preferred embodiment of the screening chute of this utility model, cavities are symmetrically provided inside the mounting frame and on the inner sides of the two slots, and the bottom ends of the two cavities are connected to a moving groove.
[0011] In a preferred embodiment of the screening chute of this utility model, the snap-fit assembly includes threaded rods rotatably connected in the two movable slots, a drive shaft fixedly connected between the two threaded rods, a rotating rod fixedly connected to the right end of the right threaded rod, the right end of the rotating rod penetrating the inner wall of the mounting frame and extending to its outside, and a knob fixedly connected thereto, movable blocks threadedly fitted onto the outer surfaces of the two threaded rods, movable plates fixedly connected to the top ends of the two movable blocks, and snap-fit plates fixedly installed on the opposite back sides of the two movable plates.
[0012] In a preferred embodiment of the screening chute of this utility model, the bottom of each of the two insert plates is provided with a slot, and the opposite sides of the two insert plates respectively penetrate the inner wall of the two cavities and extend into the two slots.
[0013] In a preferred embodiment of the screening chute of this utility model, the threads on the outer surfaces of the two threaded rods are arranged in opposite directions.
[0014] The beneficial effects of this invention are as follows: This device achieves efficient classification and screening of coal and impurities of different particle sizes by installing a removable liner in the tank and designing small and large aperture filter holes on the liner. The two channels below the liner correspond to two collection boxes, and the collection boxes are inclined internally, which increases the collection capacity of impurities and reduces the frequency of cleaning. Through the cooperation of the insert plate, slot, and snap-fit assembly, the liner can be quickly disassembled, facilitating cleaning and maintenance in case of blockage, significantly improving the efficiency and ease of operation of the equipment. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0016] Figure 1 This is a perspective view of the overall structure of this utility model;
[0017] Figure 2 This is a three-dimensional exploded view of the present invention;
[0018] Figure 3 This is a perspective view of the groove and mounting frame of this utility model;
[0019] Figure 4 This is a front sectional view of the present invention. Detailed Implementation
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0022] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0023] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0024] Example
[0025] Reference Figures 1-4 This embodiment provides a screening chute for conveying and screening coal materials. It includes multiple functional components, which work together to achieve efficient screening, convenient maintenance, and stable operation.
[0026] The trough 1 is the main structure of the entire screening chute. Its upper surface has a placement trough 101 for accommodating and guiding materials. The bottom of the placement trough 101 has symmetrical through-slots 102 on both the front and rear sides. Through the through-slots 102, the screened impurities can be directly discharged into the collection box below, improving the efficiency of screening and impurity treatment.
[0027] A liner 2 is installed inside the placement trough 101. The main function of the liner 2 is to provide a detachable screening structure. Small-diameter filter holes 201 and large-diameter filter holes 202 are respectively opened at the front and rear ends of the liner 2. The design of these filter holes allows the liner to classify and screen impurities according to their particle size. The small-diameter filter holes 201 are used to screen smaller impurities, while the large-diameter filter holes 202 are used to screen larger impurities. The two filter holes are respectively located directly above the two through troughs 102 to ensure that impurities can pass smoothly through the through troughs into the collection box.
[0028] To ensure the liner 2 is securely installed, a mounting frame 3 is fixedly installed at the bottom of the tank 1. Slots 301 are symmetrically provided at the left and right ends of the mounting frame 3 where it connects to the tank 1. These slots 301 accommodate the insert plates 4 installed at the left and right ends of the bottom of the liner 2. The secure installation of the liner is achieved through the cooperation of the insert plates and slots. Furthermore, a locking component 5 is provided at the center of the mounting frame 3. The locking component 5 further limits and fixes the insert plates 4, preventing displacement or loosening of the liner during operation.
[0029] The specific structure of the snap-fit assembly 5 includes: two threaded rods 501 rotatably connected within the movable slot 304, and the two threaded rods 501 are fixedly connected by a transmission shaft 502 to achieve synchronous rotation. A rotating rod 503 is fixedly connected to the right end of each threaded rod 501. The right end of the rotating rod 503 penetrates the inner wall of the mounting frame 3 and extends to its exterior, where it is fixedly connected to a knob 504. Rotating the knob 504 drives the threaded rod 501 to rotate. A movable block 505 is threaded onto the outer surface of the threaded rod 501. A movable plate 506 is fixedly connected to the top of the movable block 505, and a locking plate 507 is fixedly installed on the opposite side of the movable plate 506. The locking plate 507 penetrates the inner wall of the cavity 303 and extends into the locking groove 401 at the bottom of the insert plate 4, thereby securely fixing the insert plate 4 in the slot 301. The threads on the outer surfaces of the two threaded rods 501 are turned in opposite directions, ensuring that the moving block 505 can move synchronously to the middle or both sides when the knob 504 is rotated, so as to realize the function of quickly locking or releasing the insert plate 4.
[0030] Slide grooves 302 are provided at both the front and rear ends of the mounting frame 3, and collection boxes 6 are slidably connected within the slide grooves 302. The function of the collection boxes 6 is to receive impurities that have passed through the sieve 102. To improve collection efficiency, the interiors of the two collection boxes 6 are inclined, and the inclination direction is consistent with the inclination direction of the trough 1, ensuring that impurities can accumulate at the bottom of the collection box, maximizing collection capacity and reducing cleaning frequency. In addition, handles 7 are fixedly installed on the right outer wall of both collection boxes 6, making it convenient for workers to quickly pull out or replace the collection boxes when cleaning is required, improving operational convenience.
[0031] The overall working process is as follows: Raw coal enters the screening chute through the placement trough 101 of the trough 1. As the material slides on the liner 2, impurities, according to their particle size, pass through the small-diameter filter holes 201 and the large-diameter filter holes 202 in sequence into the through trough 102, and finally fall into the collection box 6 slidably connected in the chute 302. The screened coal slides out along the inclined direction of the trough 1, realizing the integration of conveying and screening. When the liner becomes clogged, the operator releases the locking component 5 by rotating the knob 504, and quickly removes the liner 2 for cleaning or replacement, thereby ensuring the continuous and efficient operation of the equipment.
[0032] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0033] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0034] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A screening chute, characterized by: The utility model provides a kind of slot body (1), the upper surface of the slot body (1) is equipped with placement slot (101), the front and rear sides of the bottom end of the placement slot (101) are symmetrically equipped with through slot (102), the inside of the lining plate (2) is laid in the placement slot (101), the front and rear ends of the inside of the lining plate (2) are respectively equipped with small aperture filter hole (201) and large aperture filter hole (202), and the small aperture filter hole (201) and large aperture filter hole (202) are respectively arranged in the just above of two the through slot (102), the bottom of the slot body (1) is fixedly installed with mounting frame (3), the left and right ends of the upper surface of the mounting frame (3) and the lower surface of the slot body (1) are symmetrically equipped with insertion slot (301), the left and right ends of the bottom of the lining plate (2) are symmetrically installed with the insertion plate (4) compatible with two the insertion slot (301), the center of the inside of the mounting frame (3) is provided with clamping assembly (5), and two the insertion plate (4) is fixed in two the insertion slot (301) by the clamping assembly (5) limiting.
2. The sizing chute of claim 1, wherein: The front and rear ends of the mounting frame (3) are equipped with sliding slot (302), and the two sliding slots (302) are slidably connected with collecting box (6), and the two collecting boxes (6) are arranged just below the two through slots (102).
3. The sizing chute of claim 2, wherein: The inside of the two collecting boxes (6) is inclined, and the inclination direction of the collecting box (6) is consistent with the inclination direction of the slot body (1), and the right outer wall of the two collecting boxes (6) is fixedly installed with handle (7).
4. The sizing chute of claim 3, wherein: The inside of the mounting frame (3) and the inside of the two insertion slots (301) are symmetrically equipped with cavity (303), and the bottom of the two cavities (303) is communicated with moving groove (304).
5. The sizing chute of claim 4, wherein: The clamping assembly (5) includes a threaded rod (501) rotatably connected in the two moving grooves (304), a transmission shaft (502) fixedly connected between the two threaded rods (501), a right end of the right end of the threaded rod (501) fixedly connected with a rotating rod (503), the right end of the rotating rod (503) penetrates the inner wall of the mounting frame (3) and extends to the outside thereof and is fixedly connected with a knob (504), and the outer surfaces of the two threaded rods (501) are threadedly sleeved with moving blocks (505), the top ends of the two moving blocks (505) are fixedly connected with moving plates (506), and the opposite surfaces of the two moving plates (506) are fixedly installed with clamping plates (507).
6. The sizing chute of claim 5, wherein: The bottom of the two insertion plates (4) is equipped with a clamping groove (401), and the opposite surfaces of the two clamping plates (507) penetrate the inner walls of the two cavities (303) and extend into the two clamping grooves (401).
7. The sizing chute of claim 6, wherein: The threads on the outer surfaces of the two threaded rods (501) are oppositely arranged.