Dust removal ash feeding equipment for preparing cold briquettes

Abstract

The utility model provides a kind of dust ash loading equipment for preparation cold briquetting, belong to conveying device technical field, including screw conveyor, screening cylinder and crushing assembly;Crushing assembly is located in the inner chamber of screening cylinder, and crushing assembly includes sieve plate and crushing roller group, sieve plate is set below inlet, sieve plate is gradually inclined downward along discharge direction, and the discharge side of sieve plate and the sidewall of screening cylinder form passageway between each other;Crushing roller group is located below passageway, and crushing roller group includes two crushing rollers which are transversely parallel arranged, and the outer periphery of two crushing rollers has crushing tooth which is engaged, and two crushing rollers rotate to crush the caked material discharged by sieve plate.The dust ash loading equipment for preparation cold briquetting provided by the utility model makes the material entering screw conveyor always keep uniform, avoid the fluctuation of screw conveyor feeding capacity caused by material caking, and the pipeline blockage problem caused by dust ash caking, improve conveying efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of conveying device technology, and more specifically, it relates to a dust removal and ash feeding device for preparing cold-pressed blocks. Background Technology

[0002] In the production processes of industries such as steel, metallurgy, and chemicals, a large amount of dust rich in recyclable resources (such as iron) is generated. To achieve resource recycling and environmental protection requirements, the industry generally prepares the dust into cold-pressed blocks and reuses them in the production process.

[0003] Traditional dust collection equipment often uses a single conveyor belt. Because the dust particles are small, have poor flowability, and are prone to clumping, the conveyor belt often gets blocked or slips during the conveying process, resulting in uneven feeding or even interruptions.

[0004] Currently, screw conveyors can also be used for dust collection and feeding equipment. These conveyors are driven by a motor to rotate a screw shaft, using the pushing action of the screw blades to transport the dust from the outlet of the storage tank to the inlet of the mixer, thus adapting to the production process of cold-pressed briquettes. However, because dust easily agglomerates and clumps, these clumps, after entering the screw conveyor from the outlet of the storage tank, can become stuck between the inlet and the screw blades, forming bridging blockages and affecting the conveying efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a dust removal and ash feeding device for preparing cold-pressed briquettes, which aims to solve the problem of dust removal ash caking and clogging the screw conveyor and improve the conveying efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a dust collection and feeding device for preparing cold-pressed briquettes, comprising: A screw conveyor is installed between the storage tank and the mixer; A screening cylinder has an inlet at its upper end, which is connected to the outlet of a storage tank, and an outlet at its lower end, which is connected to the inlet of a screw conveyor. A crushing assembly is located inside the screening cylinder. The crushing assembly includes a screen plate and a crushing roller assembly. The screen plate is disposed below the feed inlet and gradually slopes downward along the discharge direction. A material passage is formed between the discharge side of the screen plate and the side wall of the screening cylinder. The crushing roller assembly is located below the material passage and includes two horizontally parallel crushing rollers. The outer circumference of the two crushing rollers has interlocking crushing teeth. The two crushing rollers rotate to crush the agglomerated material discharged from the screen plate.

[0007] In another embodiment of this application, the sieve plate includes: The fixed frame includes a fixed frame installed on the inner wall of the screening cylinder and a discharge frame located on the discharge side; A screen is installed on the fixed frame, with the upper surface of the screen flush with the upper surface of the discharge frame.

[0008] In another embodiment of this application, the upper surface of the fixed frame is higher than the upper surface of the screen, and the side of the fixed frame close to the screen is provided with an inclined surface.

[0009] In another embodiment of this application, mounting portions are provided on both side frames of the fixed frame, and the mounting portions are used to connect the screening cylinder.

[0010] In another embodiment of this application, the mounting portion is fixed to the inner wall of the screening cylinder by means of a mounting base; the mounting base includes: The base is fixed inside the screening cylinder by bolts or welding; the base is provided with a mounting groove, the opening of the mounting groove facing away from the inner cavity of the screening cylinder; the free end of the mounting part extends into the mounting groove; A guide rod is longitudinally disposed within the mounting groove; the mounting part is sleeved on the guide rod and slides in cooperation with the guide rod. The lower elastic element is sleeved on the outside of the guide rod, and the two ends of the lower elastic element abut against the lower end of the mounting part and the lower end sidewall of the mounting groove, respectively. An upper elastic element is sleeved on the outside of the guide rod, and the two ends of the upper elastic element abut against the upper end of the mounting part and the upper side wall of the mounting groove, respectively.

[0011] In another embodiment of this application, there are at least two guide rods, which are spaced apart.

[0012] In another embodiment of this application, the mounting base further includes: A guide rail is provided at the bottom of the mounting groove, and the guide rail is arranged longitudinally; The slider is slidably mounted on the guide rail, and the free end of the mounting part is fixedly connected to the slider.

[0013] In another embodiment of this application, the mounting base further includes a sealing component located at the opening of the mounting groove; the sealing component includes: The upper sealing plate connects the upper end face of the mounting part and the upper side wall of the mounting groove; The lower sealing plate connects the lower end face of the mounting part and the lower end side wall of the mounting groove; Both the upper sealing plate and the lower sealing plate are corrugated plates.

[0014] In another embodiment of this application, the upper end of the mounting base has an inclined guide plate, the fixed end of the inclined guide plate is attached to the inner side wall of the screening cylinder, and the free end of the inclined guide plate extends to the top of the screen.

[0015] In another embodiment of this application, the crushing roller is provided with multiple sets of crushing teeth along the axial direction, and adjacent sets of crushing teeth are staggered.

[0016] The beneficial effects of the dust collection and feeding equipment for preparing cold-pressed briquettes provided by this utility model are as follows: Compared with the prior art, the dust collection and feeding equipment for preparing cold-pressed briquettes of this utility model enables precise docking of the screw conveyor with the screening cylinder and storage tank, ensuring smooth material conveying, making the overall layout compact, and reducing the space occupied by the equipment; by setting a combination structure of screen plate and crushing roller group in the inner cavity of the screening cylinder, the screen plate first intercepts the agglomerated material, and then the crushing teeth of the crushing roller group crush the agglomerated material, so that the material entering the screw conveyor always remains in a uniform and agglomerated state, avoiding the fluctuation of the screw conveyor's feed rate caused by material agglomeration, as well as the pipe blockage and equipment jamming caused by dust collection ash agglomeration, thus improving the conveying efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a schematic diagram of the structure of the dust collection and feeding system for preparing cold-pressed blocks provided in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the screening cylinder and the screw conveyor provided in an embodiment of the present utility model; Figure 3 A longitudinal sectional view of the mounting base provided in an embodiment of this utility model; Figure 4 A schematic diagram of the sieve plate provided in an embodiment of this utility model; Figure 5 A cross-sectional view of the sieve plate provided in an embodiment of this utility model; Figure 6 This is a cross-sectional view of the crushing roller provided in an embodiment of the present utility model.

[0019] In the diagram: 100, storage tank; 200, screening cylinder; 300, screw conveyor; 400, mixer; 201. Feed pipe; 202. Screen plate; 2021. Screen mesh; 2022. Fixed frame; 2023. Discharge frame; 2024. Mounting part; 203. Crushing roller; 204. Crushing teeth; 205. Discharge pipe; 206. Mounting base; 2061. Mounting groove; 2062. Guide rod; 2063. Upper elastic element; 2064. Lower elastic element; 2065. Upper sealing plate; 2066. Lower sealing plate; 207. Guide rail; 208. Slider; 209. Inclined guide plate. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please see Figures 1 to 6 The dust collection and feeding equipment for preparing cold-pressed briquettes provided by this utility model will now be described. The dust collection and feeding equipment for preparing cold-pressed briquettes includes a screw conveyor 300, a screening cylinder 200, and a crushing assembly; the screw conveyor 300 is located between the storage tank 100 and the mixer 400; the upper end of the screening cylinder 200 has an inlet connected to the outlet of the storage tank 100, and the lower end of the screening cylinder 200 has an outlet connected to the inlet of the screw conveyor 300; the crushing assembly is located in the inner cavity of the screening cylinder 200, and the crushing assembly includes a screen plate 202. The crushing rollers 203 are arranged together, and the screen plate 202 is located below the feed inlet. The screen plate 202 is gradually inclined downward along the discharge direction, and a material passage is formed between the discharge side of the screen plate 202 and the side wall of the screening cylinder 200. The crushing rollers 203 are located below the material passage. The crushing rollers 203 include two horizontally parallel crushing rollers 203. The outer periphery of the two crushing rollers 203 has interlocking crushing teeth 204. The two crushing rollers 203 rotate to crush the agglomerated material discharged from the screen plate 202.

[0022] The working process of the dust collection and feeding equipment for preparing cold-pressed blocks provided by this utility model is as follows: The dust used for preparing cold-pressed blocks stored in the storage tank 100 first falls naturally through the outlet of the storage tank 100 and enters the feed port opened at the top of the screening cylinder 200, completing the transition of the material from the storage stage to the screening process stage, and providing initial raw materials for subsequent fine material processing.

[0023] Dust collector ash enters the screening cylinder 200 and first contacts the screen plate 202 located below the feed inlet. As the screen plate 202 gradually tilts downwards along the discharge direction, the dust collector ash will naturally slide along the tilt direction of the screen plate 202 under the action of gravity. During this process, fine dust collector ash with particle size that meets the requirements for cold-pressed briquettes falls directly through the screen holes of the screen plate 202 and is discharged through the discharge outlet; while agglomerated materials formed due to moisture, accumulation, etc. are intercepted by the screen plate 202 and slide towards the discharge side of the screen plate 202 according to the tilt angle of the screen plate 202, and finally enter the material passage and are precisely guided to the crushing roller group 203 below. Since the two crushing rollers 203 of the crushing roller group 203 are arranged horizontally parallel and have interlocking crushing teeth 204 on their outer circumference, when the two crushing rollers 203 rotate synchronously, the interlocking crushing teeth 204 will squeeze and shear the incoming agglomerated material, crushing the agglomerated material into fine materials with the required particle size. These materials are mixed in the inner cavity of the screening cylinder 200 and then pass through the discharge port at the lower end of the screening cylinder 200 into the feed port of the screw conveyor 300, which is connected to the discharge port. Subsequently, the screw conveyor 300 stably transports the qualified dust to the mixer 400, completing the dust feeding process required for the entire cold-pressed block preparation.

[0024] The dust collection and feeding equipment for preparing cold-pressed briquettes provided by this utility model, compared with the prior art, features precise docking between the screw conveyor 300, the screening cylinder 200, and the storage tank 100, ensuring smooth material conveying, making the overall layout compact, and reducing the space occupied by the equipment. By setting a combination structure of screen plate 202 and crushing roller 203 in the inner cavity of the screening cylinder 200, the screen plate 202 first intercepts agglomerated materials, and then the crushing teeth 204 of the crushing roller 203 crush the agglomerated materials, so that the materials entering the screw conveyor 300 always remain uniform and free of agglomerates. This avoids fluctuations in the feed rate of the screw conveyor 300 caused by material agglomeration, as well as pipe blockage and equipment jamming caused by dust collection ash agglomeration, thus improving conveying efficiency.

[0025] Specifically, the screening cylinder 200 has a rectangular cross-section. A feed pipe 201 is provided at the feed inlet of the screening cylinder 200, and a flange is provided at the end of the feed pipe 201. The feed pipe 201 is fixed to the discharge outlet of the storage tank 100 via the flange. Similarly, a discharge pipe 205 is provided at the discharge outlet of the screening cylinder 200, and a flange is provided at the end of the discharge pipe 205. The discharge pipe 205 is fixed to the feed inlet of the screw conveyor 300 via a flange.

[0026] The sieve plate 202 can be fixedly installed inside the screening cylinder 200, and the tilt angle of the sieve plate 202 can be 30°-60°.

[0027] The rotating shaft of the crushing roller 203 passes through the screening cylinder 200 and extends to the outside of the screening cylinder 200. A drive motor is installed on the outside of the screening cylinder 200, and the output end of the drive motor is fixedly connected to the rotating shaft to drive the rotating shaft. The two crushing rollers 203 rotate synchronously relative to each other, thereby crushing the agglomerated material located between them.

[0028] In some possible embodiments, please refer to Figure 4 , Figure 5 The screen plate 202 includes a fixed frame and a screen 2021; the fixed frame includes a fixed frame 2022 installed on the inner side wall of the screening cylinder 200 and a discharge frame 2023 located on the discharge side; the screen 2021 is installed on the fixed frame, and the upper end face of the screen 2021 is flush with the upper end face of the discharge frame 2023.

[0029] The screen 2021 can be made of steel wire mesh, and its edges are fixed to the fixed frame by welding or clips. The fixed frame is rectangular. The fixed frame 2022 is a C-shaped frame, and the discharge frame 2023 is connected to the open side of the fixed frame 2022, forming a rectangular frame together with the fixed frame 2022.

[0030] The fixed frame supports and tensions the screen 2021. It is securely connected to the inner wall of the screening cylinder 200 via a fixed side frame 2022, ensuring that the screen plate 202 does not shake or deform during material impact and sliding, thus improving overall structural stability. The discharge side frame 2023 is flush with the upper surface of the screen 2021, ensuring that agglomerated materials on the screen 2021 can be smoothly discharged through the discharge side frame 2023.

[0031] The screen 2021 is detachably connected to the fixed frame. When the screen 2021 is worn or clogged due to long-term use, it is not necessary to disassemble the entire screen plate 202. Only the screen 2021 needs to be replaced or cleaned separately.

[0032] In some possible embodiments, please refer to Figure 4 The upper surface of the fixed frame 2022 is higher than the upper surface of the screen 2021, and the fixed frame 2022 has an inclined surface on the side close to the screen 2021.

[0033] The fixed frame 2022 is used to fix the screen 2021 and connect it to the screening cylinder 200. To improve its installation strength, the thickness of the fixed frame 2022 must be greater than the thickness of the screen 2021.

[0034] The fixed frame 2022 intercepts and guides the material, preventing it from directly impacting the side wall of the screening cylinder 200 or splashing out of the screen plate 202, and reducing material accumulation between the frame and the side wall of the screening cylinder 200. The material falls onto the fixed frame 2022 and then slides along the inclined surface inside the fixed frame 2022 onto the surface of the screen 2021, reducing material accumulation at the junction of the fixed frame 2022 and the screen 2021, ensuring that dust evenly covers the screen 2021.

[0035] In some possible embodiments, please refer to Figure 3 The fixed frame has mounting parts 2024 on both side frames, which are used to connect the screening cylinder 200.

[0036] The mounting part 2024 can be a sheet-like body. The mounting part 2024 increases the contact area between the fixing frame and the screening cylinder 200. A bevel can be provided on the mounting part 2024 to facilitate welding and fixing with the screening cylinder 200. Alternatively, bolt holes can be provided on the mounting part 2024 to facilitate fixing the mounting part 2024 to the screening cylinder 200 with bolts.

[0037] To prevent material from accumulating on the inner wall of the screening cylinder 200, the feed pipe 201 is positioned directly above the screen 2021 and corresponding to the center of the screen 2021. At this point, the screen 2021 can completely cover the feeding area. The edge of the screen plate 202 does not need to extend to the inner wall of the screening cylinder 200; therefore, a mounting part 2024 is provided on the outer side of the fixing frame 2022. The mounting part 2024 acts as an extension arm for fixing to the inner wall of the screening cylinder 200.

[0038] In some possible embodiments, please refer to Figure 3 The mounting part 2024 is fixed to the inner wall of the screening cylinder 200 by means of the mounting base 206; the mounting base 206 includes a base body, a guide rod 2062, a lower elastic element 2064, and an upper elastic element 2063; the base body is fixed in the screening cylinder 200 by bolts or welding; the base body is provided with a mounting groove 2061, the opening of the mounting groove 2061 facing away from the inner cavity of the screening cylinder 200; the free end of the mounting part 2024 extends into the mounting groove 2061; the guide rod 2062 is arranged longitudinally in the mounting groove. Inside 2061; the mounting part 2024 is sleeved on the guide rod 2062 and slides in cooperation with the guide rod 2062; the lower elastic member 2064 is sleeved on the outside of the guide rod 2062, and the two ends of the lower elastic member 2064 abut against the lower end of the mounting part 2024 and the lower end side wall of the mounting groove 2061 respectively; the upper elastic member 2063 is sleeved on the outside of the guide rod 2062, and the two ends of the upper elastic member 2063 abut against the upper end of the mounting part 2024 and the upper end side wall of the mounting groove 2061 respectively.

[0039] In this embodiment, the mounting base 206 is fixed on the inner wall of the screening cylinder 200, and the mounting part 2024 extends into the mounting base 206 as an extension arm and is fixedly connected to the mounting base 206 to limit the position of the screen plate 202.

[0040] The mounting section 2024 is a horizontal plate-like structure extending outward, and its width is adapted to the width of the mounting groove 2061 in the mounting base 206.

[0041] When installing the screen plate 202, the mounting base 206 must first be installed inside the screening cylinder 200. The base of the mounting base 206 can be fixed by bolts or welding. Then, the screen plate 202 and the mounting base 206 are connected: the free end of the mounting part 2024 on the side frame of the fixed frame extends into the mounting groove 2061, and the mounting part 2024 is sleeved on the guide rod 2062, forming a sliding fit with the guide rod 2062. At this time, the two ends of the lower elastic member 2064 abut against the lower end of the mounting part 2024 and the lower side wall of the mounting groove 2061, respectively, and the two ends of the upper elastic member 2063 abut against the upper end of the mounting part 2024 and the upper side wall of the mounting groove 2061, respectively. Through the elastic support of the upper and lower elastic members, the mounting part 2024 is flexibly fixed in the mounting groove 2061, finally completing the stable connection between the screen plate 202 and the screening cylinder 200, providing a structural foundation with both stability and buffering for subsequent screening.

[0042] Optionally, the guide rod 2062 can be a threaded rod that passes through one end of the seat body from bottom to top or from top to bottom, and it is threaded into the seat body of the mounting base 206. During installation, first, the guide rod 2062 is rotated partially into the seat body, then the lower elastic element 2064, the mounting part 2024, and the upper elastic element 2063 are installed on the outside of the guide rod 2062, and finally the guide rod 2062 is moved until the free end of the guide rod 2062 abuts against the side wall of the mounting cavity. A hexagonal nut is provided at the bottom of the threaded rod for easy installation.

[0043] During operation, the dust collected in the screening cylinder 200 falls onto the screen mesh 2021 of the screen plate 202. Due to material impact and equipment vibration, the screen plate 202 tends to shift slightly. When the screen plate 202 experiences a downward impact, the mounting part 2024 slides downward along the guide rod 2062, compressing the lower elastic element 2064. The lower elastic element 2064 generates an upward reaction force to offset part of the impact force. When the screen plate 202 experiences an upward vibration or rebound force, the mounting part 2024 slides upward along the guide rod 2062, compressing the upper elastic element 2063. The upper elastic element 2063 generates a downward reaction force to buffer the vibration. Therefore, with the cooperation of the upper elastic element 2063 and the lower elastic element 2064, the screen mesh 2021 maintains a certain vibration amplitude to improve the screening effect. Furthermore, when the screen 2021 is subjected to a large impact from agglomerates, the upper elastic element 2063 and the lower elastic element 2064 can adaptively adjust the buffering force through their own deformation, providing stronger buffering when the impact force is large.

[0044] Optionally, the mounting base 206 and the mounting part 2024 are arranged in pairs, and multiple mounting bases 206 can be provided, with multiple mounting bases 206 symmetrically arranged on both sides of the screen plate 202.

[0045] In some possible embodiments, there are at least two guide rods 2062, which are spaced apart.

[0046] To improve the installation stability of the mounting part 2024, two or more guide rods 2062 can be set within the same mounting cavity. This allows for sliding engagement between the multiple guide rods 2062 and the mounting part 2024, keeping the mounting part 2024 horizontal and improving its stability, while ensuring smooth sliding with the guide rods 2062. The lateral constraint structure formed by the multiple guide rods 2062 effectively restricts the displacement of the mounting part 2024 beyond the axial direction of the guide rods 2062, preventing the mounting part 2024 from tilting or shifting during sliding.

[0047] During operation, when the screen plate 202 is subjected to a downward impact force, the mounting part 2024 slides downward synchronously along all the guide rods 2062, and the lower elastic members 2064 on the outer side of each guide rod 2062 are compressed synchronously, together generating an upward reaction force to offset the impact force; when the screen plate 202 is subjected to an upward vibration or rebound force, the mounting part 2024 slides upward synchronously along all the guide rods 2062, and the upper elastic members 2063 are compressed synchronously, together buffering the vibration.

[0048] In some possible embodiments, please refer to Figure 3The mounting base 206 also includes a guide rail 207 and a slider 208. The guide rail 207 is located at the bottom of the mounting groove 2061 and is arranged longitudinally. The slider 208 is slidably mounted on the guide rail 207, and the free end of the mounting part 2024 is fixedly connected to the slider 208.

[0049] During installation, the free end of the mounting part 2024 on the side frame of the fixed frame is first fixedly connected to the slider 208, and then, together with the slider 208, it is fitted onto the guide rod 2062, so that the mounting part 2024 forms a sliding engagement with the guide rail 207 through the slider 208, and simultaneously forms a synchronous sliding engagement with the guide rod 2062. The mounting part 2024 has a through hole corresponding to the guide rod 2062. During installation, the guide rail 207 and slider 208 can be installed first, and the guide rod 2062 can be installed after the mounting part 2024 is fixed to the slider 208.

[0050] The cooperation between the slider 208 and the guide rail 207 further constrains the sliding direction of the mounting part 2024, completing the stable connection between the screen plate 202 and the screening cylinder 200, and providing a structural foundation with stability, buffering and smooth sliding for subsequent screening.

[0051] Compared to the direct contact and sliding between the mounting part 2024 and the wall of the mounting groove 2061, the sliding fit between the slider 208 and the guide rail 207 can significantly reduce the friction area and friction resistance, thereby reducing wear between the mounting part 2024 and the mounting base 206. At the same time, the structural design of the guide rail 207 and the slider 208 makes the sliding force more uniform, avoiding damage to parts caused by excessive local friction, significantly extending the service life of the mounting part 2024 and the mounting base 206, and reducing the frequency and cost of equipment maintenance and replacement.

[0052] In some possible embodiments, please refer to Figure 3 The mounting base 206 also includes a sealing assembly located at the opening of the mounting groove 2061. The sealing assembly includes an upper sealing plate 2065 and a lower sealing plate 2066. The upper sealing plate 2065 connects the upper end face of the mounting part 2024 and the upper side wall of the mounting groove 2061; the lower sealing plate 2066 connects the lower end face of the mounting part 2024 and the lower side wall of the mounting groove 2061. Both the upper sealing plate 2065 and the lower sealing plate 2066 are corrugated plates. The expandable and contractible nature of the corrugated plates ensures that the sealing assembly can freely expand and contract with the sliding of the mounting part 2024, achieving a complete seal on the opening of the mounting groove 2061 and preventing materials from entering the mounting groove 2061 and causing blockage or wear of the guide rod 2062, elastic element, guide rail 207, and slider 208.

[0053] When the screen plate 202 is subjected to a downward impact force, the mounting part 2024 drives the slider 208 to slide downward along the guide rail 207, and simultaneously slides downward along all the guide rods 2062. At this time, the lower corrugated sealing plate is compressed as the mounting part 2024 moves downward, and the upper corrugated sealing plate is stretched as the mounting part 2024 moves downward. The two always fit tightly against the mounting part 2024 and the side wall of the mounting groove 2061, maintaining a seal on the opening of the mounting groove 2061. Conversely, when the screen plate 202 is subjected to an upward vibration or rebound force, the mounting part 2024 drives the slider 208 to slide upward along the guide rail 207, and simultaneously slides upward along all the guide rods 2062. The upper corrugated sealing plate is compressed and the lower corrugated sealing plate is stretched, still maintaining a sealed state.

[0054] In some possible embodiments, please refer to Figure 2 , Figure 3 The upper end of the mounting base 206 has an inclined guide plate 209. The fixed end of the inclined guide plate 209 is attached to the inner side wall of the screening cylinder 200, and the free end of the inclined guide plate 209 extends above the screen 2021.

[0055] During the material falling process, some of the material close to the inner wall of the screening cylinder 200 will come into contact with the inclined guide plate 209 at the upper end of the mounting base 206. Since the guide plate is inclined downward along the material discharge direction and the free end is located above the screen 2021, the material is guided by the guide plate and slides smoothly down the inclined surface of the guide plate to the surface of the screen 2021, avoiding the material from directly impacting the mounting base 206 or accumulating in the gap between the side wall of the screening cylinder 200 and the screen plate 202.

[0056] The inclined guide plate 209 can extend laterally along the inner wall of the screening cylinder 200 and cover the entire length of the screen plate 202.

[0057] In some possible embodiments, please refer to Figure 6 The crushing roller 203 is provided with multiple sets of crushing teeth 204 along the axial direction, and adjacent sets of crushing teeth 204 are staggered.

[0058] Each crushing roller 203 is provided with multiple sets of crushing teeth 204 spaced along the axial direction, and adjacent sets of crushing teeth 204 are staggered. The crushing teeth 204 of the two crushing rollers 203 mesh with each other to ensure that the agglomerated material can be fully sheared during rotation, improving the crushing effect. In addition, the adjacent staggered crushing teeth 204 will form inter-tooth misalignment shearing during rotation, dividing the transverse section of the agglomerated material and preventing large agglomerates from failing to be crushed due to uneven force. The meshing crushing teeth 204 of the two crushing rollers 203 compress the agglomerated material, and together with the shearing action of the staggered teeth, the agglomerates are quickly crushed into fine materials with the required particle size, avoiding agglomerate residue caused by uneven distribution of crushing teeth 204.

[0059] The screw conveyor 300 can be a conventional screw conveyor 300, which is existing technology and will not be described in detail here.

[0060] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust collection and feeding device for preparing cold-pressed briquettes, characterized in that, include: A screw conveyor (300) is located between the storage tank (100) and the mixer (400); A screening cylinder (200) is provided with an inlet at its upper end, which is connected to the outlet of a storage tank (100). A discharge port is provided at the lower end of the screening cylinder (200), which is connected to the inlet of a screw conveyor (300). The crushing assembly is located in the inner cavity of the screening cylinder (200). The crushing assembly includes a screen plate (202) and a crushing roller (203) assembly. The screen plate (202) is located below the feed inlet. The screen plate (202) gradually tilts downward along the discharge direction. A material passage is formed between the discharge side of the screen plate (202) and the side wall of the screening cylinder (200). The crushing roller (203) assembly is located below the material passage. The crushing roller (203) assembly includes two horizontally parallel crushing rollers (203). The outer periphery of the two crushing rollers (203) has interlocking crushing teeth (204). The two crushing rollers (203) rotate to crush the agglomerated material discharged from the screen plate (202).

2. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 1, characterized in that, The sieve plate (202) includes: The fixed frame includes a fixed frame (2022) installed on the inner wall of the screening cylinder (200) and a discharge frame (2023) located on the discharge side; A screen (2021) is installed on the fixed frame, and the upper surface of the screen (2021) is flush with the upper surface of the discharge frame (2023).

3. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 2, characterized in that, The upper surface of the fixed frame (2022) is higher than the upper surface of the screen (2021), and the fixed frame (2022) has an inclined surface on the side close to the screen (2021).

4. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 2, characterized in that, The fixed frame is provided with mounting parts (2024) on both side frames, and the mounting parts (2024) are used to connect the screening cylinder (200).

5. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 4, characterized in that, The mounting part (2024) is fixed to the inner wall of the screening cylinder (200) by means of a mounting base (206); the mounting base (206) includes: The base is fixed inside the screening cylinder (200) by bolts or welding; the base is provided with a mounting groove (2061), the opening of the mounting groove (2061) facing away from the inner cavity of the screening cylinder (200); the free end of the mounting part (2024) extends into the mounting groove (2061); A guide rod (2062) is longitudinally disposed within the mounting groove (2061); the mounting part (2024) is sleeved on the guide rod (2062) and slides in cooperation with the guide rod (2062); The lower elastic element (2064) is sleeved on the outside of the guide rod (2062), and the two ends of the lower elastic element (2064) abut against the lower end of the mounting part (2024) and the lower end side wall of the mounting groove (2061), respectively. The upper elastic element (2063) is sleeved on the outside of the guide rod (2062), and the two ends of the upper elastic element (2063) abut against the upper end of the mounting part (2024) and the upper side wall of the mounting groove (2061), respectively.

6. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 5, characterized in that, There are at least two guide rods (2062), and the two guide rods (2062) are spaced apart.

7. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 6, characterized in that, The mounting base (206) also includes: A guide rail (207) is provided at the bottom of the mounting groove (2061), and the guide rail (207) is arranged longitudinally; The slider (208) is slidably disposed on the guide rail (207), and the free end of the mounting part (2024) is fixedly connected to the slider (208).

8. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 5, characterized in that, The mounting base (206) further includes a sealing assembly located at the opening of the mounting groove (2061); the sealing assembly includes: The upper sealing plate (2065) connects the upper end face of the mounting part (2024) and the upper side wall of the mounting groove (2061); The lower sealing plate (2066) connects the lower end face of the mounting part (2024) and the lower end sidewall of the mounting groove (2061); Both the upper sealing plate (2065) and the lower sealing plate (2066) are corrugated plates.

9. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 5, characterized in that, The upper end of the mounting base (206) has an inclined guide plate (209), the fixed end of the inclined guide plate (209) is attached to the inner side wall of the screening cylinder (200), and the free end of the inclined guide plate (209) extends above the screen (2021).

10. The dust collection and feeding equipment for preparing cold-pressed blocks as described in claim 1, characterized in that, The crushing roller (203) is provided with multiple sets of crushing teeth (204) along the axial direction, and adjacent sets of crushing teeth (204) are staggered.

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