Crushing device
By optimizing the structure of the integrated screening and crushing machine and adopting screening components and various crushing parts, efficient crushing of coal has been achieved, solving problems such as incomplete combustion in boilers, improving equipment efficiency and reducing operating costs.
Patent Information
- Application Number
- CN202520106838.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing integrated screening and crushing machines cannot meet the requirements for coal crushing particle size, resulting in problems such as incomplete boiler combustion, increased coal consumption, and severe equipment wear.
Design a crushing device that includes screening components, protective components, and crushing components. By adjusting the structure and various crushing parts such as screens, scrapers, drive rollers, and auxiliary rollers, it can achieve efficient crushing and screening of coal and reduce the escape of unqualified coal.
It improves crushing efficiency, reduces energy consumption and maintenance costs, extends equipment service life, ensures that the coal particle size fed into the boiler is less than 8mm, and reduces boiler wear and operating costs.
Smart Images
Figure CN223847084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crushing device technology, and in particular to a crushing device. Background Technology
[0002] As a commonly used crushing device, the integrated screening and crushing machine is often used in crushing industries such as power plants, mines, coal, metallurgy, coking, chemicals, raw materials, and non-ferrous metals.
[0003] With the continuous changes in coal sources, such as the continuous changes in crushing particle size and crushing amount, the existing integrated screening and crushing machines cannot meet the production needs. This results in coal with substandard crushing particle size entering the boiler, leading to problems such as poor boiler sulfidation, incomplete combustion, increased coal consumption, increased fan power consumption, severe wear of boiler heating surfaces, poor boiler slag discharge, blockage of slag cooler, and slag spraying. Utility Model Content
[0004] This invention provides a crushing device that can fully crush coal, reduce the probability of substandard coal escaping, and thus solve a series of problems such as incomplete combustion in boilers.
[0005] The crushing device provided in this application includes: a body and a crushing component; wherein, the body is provided with a crushing space; the crushing component is installed in the body, and the coal entering the crushing space is crushed by the crushing component; the crushing component has an adjustment structure, which can adjust the position of corresponding parts in the crushing component to crush coal of different sizes.
[0006] The crushing device provided in this application has a main body that provides crushing space for coal and an installation environment for other parts; it also has crushing components that crush the coal and can fully crush coal of different sizes, reducing the probability of unqualified coal escaping and solving a series of problems such as incomplete combustion in boilers.
[0007] In one possible implementation of this application, the body includes a screening component and a protective component, which are connected; the protective component has a crushing space, and a crushing assembly is installed in the protective component.
[0008] In one possible implementation of this application, the screening component is connected to a feed pipe, and the protective component is connected to a discharge pipe; the coal to be processed enters the crushing space through the feed pipe, and the crushed coal falls to the target position through the discharge pipe.
[0009] In one possible implementation of this application, the crushing assembly includes a screen installed inside a protective member, and a scraper is installed at the bottom of the screen.
[0010] In one possible implementation of this application, the crushing assembly includes a disc, which is installed inside the protective member at a position corresponding to the screen. The disc is connected to multiple rocker arms, which are evenly arranged along the axial direction of the disc. Each rocker arm is connected to a hammer.
[0011] In one possible implementation of this application, an active roller is installed inside the protective component at a position corresponding to the hammer head. An end adjusting roller and an intermediate roller are provided on both sides of the active roller. The intermediate roller is provided with an adjusting structure, which adjusts the distance between the intermediate roller and the active roller.
[0012] In one possible implementation of this application, the crushing assembly further includes an auxiliary roller, which is installed inside the protective component at a position corresponding to the active roller, thereby reducing the probability of material adhesion.
[0013] In one possible implementation of this application, a crushing plate is provided on one side of the auxiliary roller, the crushing plate is installed on the inner side wall of the protective component, and the crushing plate has a certain angle with the vertical direction.
[0014] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:
[0015] (1) This application optimizes the equipment structure, namely screening and crushing separation, and can replace the screening parts and improve the crushing components, thereby reducing downtime and increasing the production capacity of the equipment.
[0016] (2) By setting up screens, scrapers, drive rollers, end adjusting rollers, intermediate rollers, auxiliary rollers, and crushing plates, this application can reduce the probability of unqualified coal escaping. This further improves screening efficiency, reduces energy consumption, reduces maintenance costs, extends equipment service life, and lowers operating costs.
[0017] (3) By modifying the equipment, this application can ensure that the coal particle size of the boiler feed is less than or equal to 8mm, thereby reducing the carbon content of the slag, reducing boiler wear, and thus reducing the primary fan current, reducing the cost of slag cooler and boiler maintenance, etc. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of a crushing device according to the present invention;
[0020] Figure 2 This is a schematic diagram of the screen structure;
[0021] Figure 3 A schematic diagram of the main rotor structure;
[0022] Figure 4 This is a schematic diagram of the connection structure of the drive roller, the end adjusting roller, and the intermediate roller.
[0023] Icons: 1-Body; 11-Screwing component; 12-Protective component; 2-Crushing assembly; 21-Screw; 211-Screw bar; 212-Scraper; 22-Main rotor; 221-Disc; 222-Rocker arm; 23-Drive roller; 24-End adjusting roller; 25-Intermediate roller; 26-Auxiliary roller; 27-Crushing plate. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0029] This application provides a crushing device, such as... Figure 1 As shown, the crushing device includes: a body 1 and a crushing component 2; wherein, the body 1 is provided with a crushing space; the crushing component 2 is installed inside the body 1, and the coal entering the crushing space is crushed by the crushing component 2; the crushing component 2 has an adjustment structure, which can adjust the position of the corresponding parts in the crushing component 2 to crush coal of different sizes.
[0030] In some embodiments of this application, the body 1 includes a screening component 11 and a protective component 12, which are connected; the protective component 12 has a crushing space, and the crushing component 2 is installed in the protective component 12.
[0031] For example, the body 1 can be configured to include a screening component 11 and a protective component 12, wherein the screening component 11 can be connected to the protective component 12, and the protective component 12 has a crushing space, and the crushing component 2 is placed in the crushing space, that is, the crushing component 2 can be installed inside the protective component 12.
[0032] For example, the main body 1 can be a screen distributor, which can be a flat roller screen. In this application embodiment, the model and size of the screen distributor are not specifically limited, and can be selected according to the actual situation.
[0033] As another example, the protective element 12 can be a housing, for example, the protective element 12 can be the outer shell of a crusher. Taking the protective element 12 as an example, the protective element 12 and the crushing assembly 2 can be combined to form a device with crushing function, such as a crusher.
[0034] Another example, taking screening component 11 as a screening distributor and protective component 12 as a housing, can be used. A feed pipe (not shown in the figure) can be installed on the screening distributor, through which the coal to be crushed enters the screening distributor. A discharge pipe (not shown in the figure) can be installed at the bottom of the housing, through which the coal processed by crushing component 2 can flow to the coal conveyor belt.
[0035] In the above embodiments, the presence of a screening component allows for pre-treatment of the coal entering the protective shell, improving screening efficiency and reducing the workload of the crushing component 2 within the protective element 12. The protective element 12 also provides installation space for the crushing component 2 and crushing space for the coal. The presence of a feed pipe and a discharge pipe, allowing for separate feeding and discharging, reduces the probability of equipment shutdown due to coal moisture content exceeding control limits and causing blockage in the crushing component 2, thus improving work efficiency.
[0036] In some embodiments of this application, such as Figure 2 As shown, the crushing component 2 includes a screen 21, which is installed inside the protective component 12, and a scraper 212 is installed at the bottom of the screen 21.
[0037] For example, the crushing component 2 may include a screen 21, which may be fixedly installed inside the protective component 12, for example, by means of bolt connection.
[0038] Furthermore, after prolonged use, the screen bars 211 on the screen 21 are prone to wear, leading to a widening of the screen gaps and an increase in the particle size of the undersize material. The screen bars 211 on the screen 21 are arranged at equal intervals.
[0039] In another example, a scraper 212 can be welded to the lower part of the screen bar 211. The length of the scraper 212 can be the same as or nearly the same as the length of the screen bar 211.
[0040] In the above embodiments, the screen 21 is provided to perform preliminary screening of the coal quality; the scraper 212 is provided to improve the structural strength of the screen 21, improve the stability of the screen gap, and ensure the output particle size; and the scraper 212 can scrape off the sticky coal and improve the service life of the screen 21.
[0041] In some embodiments of this application, such as Figure 3As shown, the crushing component 2 includes a disc 221, which is installed inside the protective component 12 at a position corresponding to the screen 21. The disc 221 is connected to multiple rocker arms 222, which are evenly arranged along the axial direction of the disc 221. The rocker arms 222 are connected to hammers, which are not marked in the figure.
[0042] For example, the crushing assembly 2 may also include a disc 221, which may be installed inside the protective member 12. For instance, the disc 221 may be fixedly installed inside the protective member 12 by bolt connection. The disc 221 may be installed on one side of the screen 21, and the coal material screened by the screen 21 may be crushed by the parts on the disc 221.
[0043] Multiple rocker arms 222 can be installed on the disc 221. The multiple rocker arms 222 are arranged at equal intervals along the axis of the disc 221. The rocker arms 222 are connected to hammers. A drive structure can be set on the disc 221 to drive the rocker arms 222 to rotate. The rocker arms 222 drive the hammers to rotate, and the hammers crush the coal.
[0044] Understandably, after prolonged use, wear will cause the grooves on the hammerhead to become shallower or disappear completely, the hammerhead edges to become rounder, the diameter to decrease, and the weight to lighten, resulting in a poorer crushing effect on coal, especially hard materials such as coal gangue. After prolonged use, the outer circumference of the rocker arm 222 and disc 221 will wear thinner, especially the tip of the rocker arm 222, which will wear shorter, creating a larger gap between the hammerheads on both sides of the rocker arm 222, leading to leakage and escape of large materials. Therefore, in actual use, hammerheads and other parts should be replaced periodically or irregularly.
[0045] Furthermore, the hammerhead can be forged from chromium-molybdenum alloy, resulting in a dense internal structure. It can also undergo tempering and quenching treatments, which can improve the overall performance and hardness of the hammerhead, ensuring its impact resistance and wear resistance, and enhancing its durability.
[0046] Alternatively, the diameter of the hammerhead can be increased, replacing the small-diameter hammerhead with a larger-diameter one, to ensure the same particle size distribution. In this embodiment, the hammerhead size is not specifically limited; it can be set according to the actual situation.
[0047] In the above embodiment, since a disc 221, a rocker arm 222 and a hammer are provided, the gap between the hammers and the rocker arm 222 can be reduced by changing the size of the corresponding parts such as the hammers. The disc 221, the rocker arm 222 and the hammers can be used together to form the main rotor 22. During the process of the main rotor 22 striking, squeezing and crushing the material, the material is not easy to escape from the gap, so that the crushing force can be guaranteed.
[0048] In some embodiments of this application, such as Figure 4As shown, an active roller 23 is installed inside the protective component 12 at the position corresponding to the hammer head. An end adjusting roller 24 and an intermediate roller 25 are provided on both sides of the active roller 23. The intermediate roller 25 is provided with an adjusting structure, which adjusts the distance between the intermediate roller 25 and the active roller 23.
[0049] For example, a drive roller 23, an end adjusting roller 24, and an intermediate roller 25 can be installed inside the protective component 12, wherein the drive roller 23 is positioned between the end adjusting roller 24 and the intermediate roller 25, and both the end adjusting roller 24 and the intermediate roller 25 are engaged with the end adjusting roller 24.
[0050] Among them, the end adjusting roller 24, the intermediate roller 25 and the drive roller 23 can all rotate, and the material is crushed by the extrusion cooperation between them and the main rotor 22.
[0051] It is understandable that the drive roller 23, the end adjusting roller 24, and the intermediate roller 25 can be installed on one side of the main rotor 22. For ease of explanation, the drive roller 23, the end adjusting roller 24, and the intermediate roller 25 can be collectively referred to as the end three-stage crushing roller. The end three-stage crushing roller is subjected to the greatest force from the main rotor 22 to squeeze and impact the material. Therefore, the end three-stage crushing roller experiences greater wear than the other crushing rollers. After the crushing rollers wear down, the gaps between the roller teeth become larger, and materials that are not completely crushed can easily escape through the gaps between the rollers, resulting in excessive particle size. Furthermore, the wear of the end crushing roller, combined with the wear of the hammers of the main rotor 22, will consume the particle size adjustment margin of the adjusting roller until particle size adjustment can no longer be performed, affecting normal operation.
[0052] Therefore, adjustment structures, such as push rods, can be provided at both ends or other locations of the intermediate roller 25 to drive the intermediate roller 25 to move closer to or further away from the drive roller 23. Furthermore, by reducing the tooth height of the end adjusting roller 24, the gap between the roller's tooth root and the rotor can be reduced, thereby decreasing the probability of large particles escaping. In this embodiment, the dimensions of the parts and the adjustment distance are not specifically limited; they can be set according to actual conditions.
[0053] In the above embodiment, since an intermediate roller 25 is provided, the crushing load of the last three rollers on the material can be balanced by adjusting the intermediate roller 25, reducing the probability of excessive hard material, thereby reducing the probability of material exceeding the standard particle size escaping due to excessive crushing load of the last adjusting roller 24.
[0054] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, the crushing assembly 2 also includes an auxiliary roller 26, which is installed inside the protective component 12 at a position corresponding to the active roller 23. The auxiliary roller 26 reduces the probability of material adhesion.
[0055] For example, the crushing assembly 2 may also include an auxiliary roller 26, which may be installed within the protective member 12 between the main rotor 22 and the drive roller 23, etc. A drive assembly may be provided on or at other locations to drive the auxiliary roller 26 to rotate.
[0056] It should be explained that in practical applications, due to the high moisture content of the material, the material is prone to sticking together at the junction. Therefore, an auxiliary roller 26 can be installed in front of the three-stage crushing roller, and a crushing plate 27 can be added behind the auxiliary roller 26.
[0057] In another example, the crushing plate 27 can be set at an angle, that is, the crushing plate 27 has a certain angle with the vertical direction. In this embodiment of the application, the tilt angle of the crushing plate 27 is not specifically limited, and can be set according to the actual situation.
[0058] In the above embodiments, the auxiliary roller 26 and the crushing plate 27 are provided. The auxiliary roller 26 can reduce the probability of wet and sticky materials sticking together. The crushing plate 27 is added between the two auxiliary rollers 26 and has a certain angle, which reduces the probability of material blockage at this point and improves work efficiency.
[0059] The following describes the usage process of the crushing device provided in this application.
[0060] Coal and other raw materials enter the screening unit 11 through the feed pipe, and then enter the protective unit 12 through the screening unit 11. The coal and other raw materials entering the protective unit 12 first fall onto the screen 21, and then fall onto the crushing component 2 through the screen 21. The rocker arm 222, the drive roller 23, the end adjusting roller 24, and the intermediate roller 25 are activated to move. The coal and other raw materials are crushed by the extrusion of the rocker arm 222, the drive roller 23, the end adjusting roller 24, and the intermediate roller 25. The crushed raw materials then fall onto the coal conveyor belt or other corresponding positions through the discharge pipe.
[0061] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0062] 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 crushing device, characterized in that The utility model relates to a coal quality breaker, which comprises: a body (1) provided with a crushing space; a crushing assembly (2) installed in the body (1) and used for crushing coal quality entering the crushing space; the crushing assembly (2) has an adjusting structure, which can adjust the positions of corresponding parts in the crushing assembly (2) to crush coal quality of different sizes.
2. The crushing device of claim 1, wherein The body (1) comprises a screening member (11) and a protective member (12), and the screening member (11) and the protective member (12) are connected; the protective member (12) has a crushing space, and the crushing assembly (2) is installed in the protective member (12).
3. The crushing device of claim 2, wherein The screening member (11) is connected with a feeding pipe, and the protective member (12) is connected with a discharging pipe; the coal quality to be treated enters the crushing space through the feeding pipe, and the crushed coal quality falls to a target position through the discharging pipe.
4. The crushing device of claim 2, wherein The crushing assembly (2) comprises a screen mesh (21) installed inside the body (1) or the protective member (12), and the screen mesh (21) is provided at the bottom with a scraper (212).
5. The crushing device of claim 4, wherein The crushing assembly (2) comprises a disc (221) installed inside the protective member (12) at a position corresponding to the screen mesh (21); the disc (221) is connected with a plurality of rocker arms (222) arranged uniformly along the axis direction of the disc (221); and the rocker arms (222) are connected with hammer heads.
6. The crushing device of claim 5, wherein A driving roller (23) is installed inside the protective member (12) at a position corresponding to the hammer heads; tail adjusting rollers (24) and intermediate rollers (25) are arranged on both sides of the driving roller (23); and the intermediate rollers (25) are provided with an adjusting structure, which is used for adjusting the distance between the intermediate rollers (25) and the driving roller (23).
7. The crushing device of claim 6, wherein The crushing assembly (2) further comprises an auxiliary roller (26) installed inside the protective member (12) at a position corresponding to the driving roller (23), which is used for reducing the probability of material adhesion.
8. The crushing device of claim 7, wherein A crushing plate (27) is arranged on one side of the auxiliary roller (26) and installed on the inner wall of the protective member (12); and the crushing plate (27) has a certain included angle with the vertical direction.