A screening device for use in the production of tunnel kiln bricks
By using a motor-driven actuating plate and transmission structure, combined with a screen plate with a return spring, the problems of clogging and low separation efficiency in the screening device during the production of brick blanks in tunnel kilns have been solved, achieving efficient and precise screening and safe operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI WANMA NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-05
AI Technical Summary
In the existing tunnel kiln brick production process, static screens are prone to clogging and have low screening efficiency. A single stirring mechanism cannot achieve effective vibration separation, resulting in uneven brick quality and increased costs for subsequent processes.
The system employs a motor-driven actuating plate and transmission structure, combined with a screen plate with a return spring, to achieve uniform actuation of the brick blanks and vibration separation of the screen plate. It is equipped with a sealed collection mechanism to prevent dust leakage, thereby improving screening efficiency and accuracy.
It improved screening efficiency, prevented brick accumulation, ensured the continuity and accuracy of screening, reduced manual intervention, and improved the working environment.
Smart Images
Figure CN224321830U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel kiln brick blank production technology, specifically a screening device used in the tunnel kiln brick blank production process. Background Technology
[0002] Tunnel kilns are modern, continuous firing thermal equipment widely used in the firing production of refractory materials and other products. In response to the government's call for energy conservation, more and more companies are choosing to use coal gangue and treated sludge as raw materials for firing wall materials during tunnel kiln production. However, during the tunnel kiln production process, the crushed raw materials need to be screened.
[0003] According to the authorized patent "CN211865746U", a screening device for the production process of brick blanks in a tunnel kiln includes a screening cylinder and a screening box. The screening cylinder is obliquely cut inside the screening box and is open at both ends. A rotating shaft is set at the center of the screening cylinder. This utility model sets the screening screen as a screening cylinder. The motor drives the gear to rotate, thereby driving the gear ring and the screening cylinder to rotate. The crushed raw material is separated more quickly as the screening cylinder rotates. At the same time, the unqualified crushed raw material rolls downward as the screening cylinder rotates until it is discharged from the discharge port. The screening cylinder is open at both ends, which completely screens and separates the crushed raw material without disassembly and cleaning, making it convenient to use. At the same time, the setting of the support roller can enhance the stability of the screening cylinder during rotation and reduce the load on the rotating shaft, thereby increasing the service life of the rotating shaft.
[0004] In the process of modern tunnel kiln brick production, efficient screening of raw materials is crucial for ensuring uniform brick quality and improving the finished product qualification rate. Traditional screening devices often use static screens or simple mechanical stirring, which presents several technical bottlenecks. On the one hand, static screens are prone to clogging the screen holes and accumulating materials when processing brick raw materials with high moisture content or high viscosity, resulting in low screening efficiency and even requiring frequent shutdowns to clean the screens, which seriously affects the continuity of production. On the other hand, although a simple stirring mechanism can promote material flow, it cannot produce an effective vibration separation effect, making it difficult to accurately grade bricks of different specifications, resulting in a large amount of unqualified raw materials being mixed in, increasing the rework costs of subsequent processes.
[0005] Therefore, this utility model provides a screening device for use in the production process of brick blanks in tunnel kilns. Utility Model Content
[0006] In view of the shortcomings of the existing technology, this utility model provides a screening device for the production process of brick blanks in tunnel kilns to solve the above problems.
[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a screening device for the production process of brick blanks in a tunnel kiln, comprising a screening box, a controller fixedly connected to the outside of the screening box, a screening plate provided inside the screening box, and a toggle mechanism provided inside the screening box;
[0008] The actuating mechanism includes a lifting groove, a slider is slidably engaged inside the lifting groove, a return spring is fixedly connected to the bottom of the slider, a stabilizing plate is fixedly connected to the top of the screening box, a connecting plate is fixedly connected to the outside of the stabilizing plate, a motor is fixedly connected to the outside of the connecting plate, a rotating shaft is fixedly connected to the output end of the motor, an actuating plate is fixedly connected to the outside of the rotating shaft, a first transmission rod is fixedly connected to the outside of the first transmission rod, a belt is driven to the outside of the first transmission rod, a second transmission rod is driven to the inner bottom of the belt, a rotating rod is fixedly connected to the outside of the second transmission rod, and a pressing rod is fixedly connected to the outside of the rotating rod.
[0009] Preferably, the screening box is provided with a collection mechanism, which includes a sealing plate, a snap-fit block is fixedly connected to the outer side of the sealing plate, a pull rod is fixedly connected to the outer side of the snap-fit block, a push plate is fixedly connected to the outer side of the pull rod, a limit block is fixedly connected to the outer side of the push plate, and a moving groove is provided in the inner wall of the screening box.
[0010] Preferably, the lifting grooves are symmetrically distributed in the inner wall of the screening box, and the screening plate is movably connected to the inside of the screening box by a slider and a return spring.
[0011] Preferably, the stabilizing plates are symmetrically distributed on the top of the screening box, and the rotating shaft is rotatably connected between the two stabilizing plates.
[0012] Preferably, the actuating plates are evenly distributed on the outer side of the rotating shaft, and the first transmission rod is rotatably connected to the outer side of the stabilizing plate.
[0013] Preferably, the second transmission rod is rotatably connected to the outside of the screening box via a belt, the rotating rod is rotatably connected to the inside of the screening box, and the squeezing rod is movably connected to the bottom of the screening plate.
[0014] Preferably, the sealing plate is installed on the outside of the screening box via a snap-fit block, and the pull rods are symmetrically distributed on the outside of the snap-fit block.
[0015] Preferably, the initial position of the push plate is on the inner wall of the screening box corresponding to the sealing plate, and the limiting block is slidably connected inside the moving groove.
[0016] Beneficial effects
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] (1) The screening device used in the production process of brick blanks in tunnel kilns drives the rotating shaft by the motor to drive the agitator plate to move the brick blanks, so that the brick blanks move fully on the screening plate, avoid the accumulation of brick blanks and improve screening efficiency; at the same time, the transmission structure composed of the first transmission rod, belt, second transmission rod, rotating rod and extrusion rod can make the extrusion rod periodically squeeze the screening plate, and with the return spring, make the screening plate vibrate, further enhancing the screening effect and making brick blanks of different specifications more accurately separated.
[0019] (2) The screening device used in the production process of brick blanks in tunnel kiln has a sealing plate in the collection mechanism to prevent brick blanks or dust from leaking out during the screening process and to ensure a clean working environment. Pulling the pull rod pushes the plate to slide in the moving groove, which can push the screened brick blanks out of the screening box for convenient centralized collection. There is no need for manual operation inside the screening box, which improves the convenience and safety of operation. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present invention;
[0021] Figure 2 This is a schematic diagram of the outer side of the actuating mechanism of this utility model;
[0022] Figure 3 This is a schematic diagram of the outer structure of the screening plate of this utility model;
[0023] Figure 4 This is a schematic diagram of the outer structure of the collector of this utility model.
[0024] In the diagram: 1. Screening box; 2. Controller; 3. Screening plate; 4. Actuating mechanism; 41. Lifting trough; 42. Slider; 43. Return spring; 44. Stabilizing plate; 45. Connecting plate; 46. Motor; 47. Rotating shaft; 48. Actuating plate; 49. First transmission rod; 410. Belt; 411. Second transmission rod; 412. Rotating rod; 413. Extrusion rod; 5. Collection mechanism; 51. Sealing plate; 52. Clamping block; 53. Pulling rod; 54. Pushing plate; 55. Limiting block; 56. Moving trough. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-4 A screening device for use in the production process of brick blanks in a tunnel kiln includes a screening box 1, a controller 2 fixedly connected to the outside of the screening box 1, a screening plate 3 inside the screening box 1, and a toggle mechanism 4 inside the screening box 1.
[0027] The actuating mechanism 4 includes a lifting groove 41, a slider 42 is slidably engaged inside the lifting groove 41, a return spring 43 is fixedly connected to the bottom of the slider 42, a stabilizing plate 44 is fixedly connected to the top of the screening box 1, a connecting plate 45 is fixedly connected to the outside of the stabilizing plate 44, a motor 46 is fixedly connected to the outside of the connecting plate 45, a rotating shaft 47 is fixedly connected to the output end of the motor 46, an actuating plate 48 is fixedly connected to the outside of the rotating shaft 47, a first transmission rod 49 is fixedly connected to the outside of the rotating shaft 47, a belt 410 is driven to the outside of the first transmission rod 49, a second transmission rod 411 is driven to the inner bottom of the belt 410, a rotating rod 412 is fixedly connected to the outside of the second transmission rod 411, and a pressing rod 413 is fixedly connected to the outside of the rotating rod 412.
[0028] Furthermore: the lifting grooves 41 are symmetrically distributed in the inner wall of the screening box 1; the screening plate 3 is movably connected to the inside of the screening box 1 via the slider 42 and the return spring 43; the stabilizing plates 44 are symmetrically distributed on the top of the screening box 1; the rotating shaft 47 is rotatably connected between the two stabilizing plates 44; the actuating plates 48 are evenly distributed on the outside of the rotating shaft 47; the first transmission rod 49 is rotatably connected to the outside of the stabilizing plate 44; the second transmission rod 411 is rotatably connected to the outside of the screening box 1 via the belt 410; the rotating rod 412 is rotatably connected to the inside of the screening box 1; and the squeezing rod 413 is movably connected below the screening plate 3.
[0029] It should be noted that: motor 46 and rotating shaft 47 provide power source to drive the agitator plate 48 to rotate to stir the brick blank. At the same time, the extrusion rod 413 is driven to move through the first transmission rod 49, the second transmission rod 411 and the belt 410. Meanwhile, the agitator plate 48 is evenly distributed on the outside of the rotating shaft 47. When rotating, it applies a lateral agitation force to the brick blank to avoid material accumulation and improve screening efficiency.
[0030] Specifically: the raw material of brick blanks to be screened is poured into the screening box 1, the controller 2 sets the speed and vibration frequency of the motor 46, the reset spring 43 is in the natural state, the screening plate 3 is in the initial low position, the brick blanks with a particle size smaller than the screen hole fall through the screening plate 3, and the large particles remain on the screen surface to continue screening until they meet the requirements or are manually removed.
[0031] As a further improvement of this utility model, the screening box 1 is provided with a collection mechanism 5. The collection mechanism 5 includes a sealing plate 51. A snap-fit block 52 is fixedly connected to the outer side of the sealing plate 51. A pull rod 53 is fixedly connected to the outer side of the snap-fit block 52. A push plate 54 is fixedly connected to the outer side of the pull rod 53. A limit block 55 is fixedly connected to the outer side of the push plate 54. A moving groove 56 is provided in the inner wall of the screening box 1.
[0032] Furthermore: the sealing plate 51 is installed on the outside of the screening box 1 via the snap-fit block 52, the pull rod 53 is symmetrically distributed on the outside of the snap-fit block 52, the initial position of the push plate 54 is on the inner wall of the screening box 1 corresponding to the sealing plate 51, and the limiting block 55 is slidably connected inside the moving groove 56.
[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0034] Working principle: The equipment is started by the controller 2 on the outside of the screening box 1. The controller 2 can set and control the operating parameters of the device, such as the speed of the motor 46, and provide instructions for the entire screening process.
[0035] After the motor 46 starts, its output end drives the rotating shaft 47 to rotate between the two stabilizing plates 44. The agitator plates 48, which are evenly distributed on the outside of the rotating shaft 47, rotate accordingly, agitating the brick blanks located on the screening plate 3. Under the action of the agitator plates 48, the brick blanks on the screening plate 3 continuously change their position and movement state, avoiding accumulation and allowing the brick blanks to make more full contact with the screening plate 3, creating good conditions for screening. At the same time, the first transmission rod 49, which is fixed on the outside of the rotating shaft 47, also rotates with the rotating shaft 47. The first transmission rod 49 drives the second transmission rod 411 to rotate through the belt 410. The second transmission rod 411 then drives the rotating rod 412, which is fixed on its outside, to rotate, thereby causing the extrusion rod 413 on the outside of the rotating rod 412 to perform circular motion. When the extrusion rod 413 is pressed, the extrusion rod 412 rotates. When rod 413 rotates to contact the bottom of screening plate 3, it will press the screening plate 3 upward. Since the screening plate 3 is slidably engaged with the lifting groove 41 through slider 42, and the bottom of slider 42 is connected to a return spring 43, under the pressure of the pressing rod 413, the screening plate 3 overcomes the elastic force of the return spring 43 and slides upward in the lifting groove 41 through slider 42. When the pressing rod 413 continues to rotate away from the bottom of the screening plate 3, the screening plate 3 returns to its original position under the action of the return spring 43. This cycle repeats, and the pressing rod 413 periodically presses the screening plate 3, causing the screening plate 3 to vibrate up and down. The vibration further promotes the movement of brick blanks on the screening plate 3, so that brick blanks of different specifications can pass through the sieve holes of the screening plate 3 more quickly and accurately to achieve separation, thereby improving the efficiency and accuracy of screening.
[0036] During the screening process, the sealing plate 51 is installed on the outside of the screening box 1 via the snap-fit block 52, which seals the side opening of the screening box 1, preventing brick blanks or dust from leaking out from the side, maintaining a clean working environment and reducing material loss. After screening is completed, the pulling rod 53 is pulled, which causes the snap-fit block 52 and the sealing plate 51 to disengage from the screening box 1. At the same time, the pulling rod 53 drives the push plate 54 to move. The limiting block 55 on the outside of the push plate 54 slides in the moving groove 56 on the inner wall of the screening box 1, which serves as a guide and limit, ensuring that the push plate 54 moves smoothly along the predetermined direction. As the push plate 54 moves, it pushes the screened brick blanks inside the screening box 1 out of the screening box 1, making it convenient for operators to collect the brick blanks from the outside of the screening box 1 without having to manually go into the screening box 1, thus improving the convenience and safety of operation.
[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A screening device for use in the production process of brick blanks in a tunnel kiln, comprising a screening box (1), characterized in that: A controller (2) is fixedly connected to the outside of the screening box (1), a screening plate (3) is provided inside the screening box (1), and a toggle mechanism (4) is provided inside the screening box (1). The actuating mechanism (4) includes a lifting groove (41), a slider (42) is slidably engaged inside the lifting groove (41), a return spring (43) is fixedly connected to the bottom of the slider (42), a stabilizing plate (44) is fixedly connected to the top of the screening box (1), a connecting plate (45) is fixedly connected to the outside of the stabilizing plate (44), a motor (46) is fixedly connected to the outside of the connecting plate (45), and a rotating shaft (47) is fixedly connected to the output end of the motor (46). A toggle plate (48) is fixedly connected to the outer side of the rotating shaft (47). A first transmission rod (49) is fixedly connected to the outer side of the rotating shaft (47). A belt (410) is driven to the outer side of the first transmission rod (49). A second transmission rod (411) is driven to the inner side of the bottom of the belt (410). A rotating rod (412) is fixedly connected to the outer side of the second transmission rod (411). A pressing rod (413) is fixedly connected to the outer side of the rotating rod (412).
2. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 1, characterized in that: The screening box (1) is equipped with a collection mechanism (5), which includes a sealing plate (51). A snap-fit block (52) is fixedly connected to the outer side of the sealing plate (51). A pull rod (53) is fixedly connected to the outer side of the snap-fit block (52). A push plate (54) is fixedly connected to the outer side of the pull rod (53). A limit block (55) is fixedly connected to the outer side of the push plate (54). A moving groove (56) is provided in the inner wall of the screening box (1).
3. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 1, characterized in that: The lifting grooves (41) are symmetrically distributed in the inner wall of the screening box (1), and the screening plate (3) is movably connected to the inside of the screening box (1) by the slider (42) and the return spring (43).
4. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 1, characterized in that: The stabilizing plates (44) are symmetrically distributed on the top of the screening box (1), and the rotating shaft (47) is rotatably connected between the two stabilizing plates (44).
5. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 1, characterized in that: The actuating plates (48) are evenly distributed on the outside of the rotating shaft (47), and the first transmission rod (49) is rotatably connected to the outside of the stabilizing plate (44).
6. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 1, characterized in that: The second transmission rod (411) is rotatably connected to the outside of the screening box (1) via a belt (410), the rotating rod (412) is rotatably connected to the inside of the screening box (1), and the squeezing rod (413) is movably connected to the bottom of the screening plate (3).
7. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 2, characterized in that: The sealing plate (51) is installed on the outside of the screening box (1) via a snap-fit block (52), and the pull rod (53) is symmetrically distributed on the outside of the snap-fit block (52).
8. A screening device for use in the production process of brick blanks in a tunnel kiln according to claim 2, characterized in that: The initial position of the push plate (54) is on the inner wall of the screening box (1) corresponding to the sealing plate (51), and the limiting block (55) is slidably connected inside the moving groove (56).