Micro powder product preparation system

Abstract

The invention relates to the technical field of grinding processes, and provides a micro-powder product preparation system which comprises a grinding machine with an air inlet and a smoke outlet; the dust removal equipment is statically arranged relative to the grinder and located on one side of the grinder; two ends of the connecting pipe I are respectively communicated with the smoke outlet and dust removal equipment; two ends of the connecting pipe II are communicated with the dust-removing equipment and the air inlet respectively; the induced draft fan is arranged on the second connecting pipe. According to the technical scheme, the problem that in the prior art, when a vertical mill is used for preparing micro powder products, high-temperature flue gas is directly discharged, and the requirements for energy conservation and emission reduction are not met is solved.

Description

Technical Field

[0001] The invention relates to the technical field of powder grinding technology, and in particular to a micro powder product preparation system. Background Art

[0002] Vertical mills are usually used in the production process of micro-powder products. As a high-efficiency grinding equipment, vertical mills are widely used in cement, mineral powder, and various mineral processing industries. Due to the process and raw materials, the vertical mill grinding process requires a heat source to provide hot air for the vertical mill to dry the moisture in the material. At present, hot air furnaces are usually used to heat the air, which will produce high-temperature flue gas. Traditionally, the high temperature will be directly discharged. In the current ultra-low emission environment, hot air furnaces that use coal gas, natural gas, and biomass gas as fuel, as well as the emissions caused by the overall process, must be compliant. However, the traditional way of discharging all high-temperature flue gas does not meet the requirements of energy conservation and emission reduction. Summary of the invention

[0003] The present invention provides a micro powder product preparation system, which solves the problem that the vertical mill in the related art directly discharges high-temperature flue gas when preparing micro powder products and does not meet the requirements of energy conservation and emission reduction.

[0004] The technical solution of the present invention is as follows: A micro powder product preparation system, comprising: A grinder having an air inlet and a smoke exhaust port; A dust removal device, the dust removal device is arranged stationary relative to the grinder and is located on one side of the grinder; A connecting pipe 1, wherein both ends of the connecting pipe 1 are respectively connected to the smoke exhaust port and the dust removal device; A second connecting pipe, wherein both ends of the second connecting pipe are respectively connected to the dust removal device and the air inlet; An induced draft fan is arranged on the second connecting pipe.

[0005] As a further technical solution, the second connecting pipe has a smoke exhaust pipe and further comprises: A burner is arranged in the second connecting pipe.

[0006] As a further technical solution, the dust removal equipment is a bag dust collector, and the dust removal equipment includes: A dust removal body, wherein the dust removal body is arranged stationary relative to the grinding machine, the dust removal body has a dust removal space, the dust removal space has an inlet and an outlet, the two ends of the connecting pipe one are respectively connected to the smoke exhaust port and the inlet, and the two ends of the connecting pipe two are respectively connected to the outlet and the air inlet; A plurality of dust removal bag groups are provided in the dust removal space, and the plurality of dust removal bag groups are arranged along a matrix.

[0007] As a further technical solution, the dust removal bag group includes: A frame, which is detachably arranged on the inner wall of the dust removal body and is cylindrical; A dust removal bag, wherein the dust removal bag is covered on the outer wall of the frame; A recoil nozzle is disposed in the dust removal space and is configured to recoil the dust removal bag from the inner wall of the frame.

[0008] As a further technical solution, the dust bag is a flexible dust bag, the bottom of the frame has a through hole, and further includes: A top member, the top member is movably disposed in the dust removal space and is located below the frame, and the top member is configured to support and drive the bottom of the dust removal bag member after movement, and pass through the through hole into the frame; A brush member is arranged in the dust removal space and below the frame. The brush member is annular and is configured to clean the bottom of the outer wall of the dust removal bag member after the top member moves.

[0009] As a further technical solution, the frame has a stepped ring portion at the top, a storage groove at the bottom of the stepped ring portion, and the top of the dust bag is located in the storage groove, and further includes: An elastic member is arranged in the storage groove, two ends of the elastic member are respectively connected to the dust bag member and the stepped ring portion, and the elastic member is configured to prevent the top of the dust bag member from escaping from the storage groove.

[0010] As a further technical solution, the cross-sectional area of ​​the top piece is smaller than the cross-sectional area of ​​the through hole, the recoil nozzle is located in the frame, the bottom of the recoil nozzle has a nozzle, and the nozzle is spaced apart from the through hole, and the top piece moves closer to or away from the nozzle.

[0011] As a further technical solution, the recoil nozzle further comprises a stopper, the stopper being located on the outer wall of the nozzle, and further comprising: The partition is movably arranged in the frame and is located in the interval. After the partition moves, it abuts or cancels the abutment against the blocking portion. The partition is configured to isolate the nozzle from spraying air upward after moving. The top piece is configured to support and drive the bottom of the dust bag after moving, pass through the through hole into the frame, and drive the partition to move.

[0012] As a further technical solution, the partition has an avoidance hole, and further comprises: The force-bearing cylinder is arranged at the bottom of the partition, and the top member is configured to drive the partition to move through the force-bearing cylinder after moving. The force-bearing cylinder has a plurality of communication ports, and the plurality of communication ports are arranged along the circumference of the force-bearing cylinder.

[0013] As a further technical solution, the recoil nozzle further comprises a threaded portion, the threaded portion is located above the stop portion, and further comprises: A rotating disk, the rotating disk is sleeved on the recoil nozzle and threadedly connected with the threaded portion, and the bottom of the rotating disk has an annular groove; A knocking piece, wherein the knocking piece is arranged at the edge of the rotating disk through a torsion spring, and the rotating disk drives the knocking piece to knock the inner wall of the frame after the rotating disk rotates; A plurality of support rods are arranged on the top of the partition plate, and one end of the plurality of support rods is located in the annular groove. When the partition plate moves, the rotating disk is driven to rotate.

[0014] The working principle and beneficial effects of the present invention are: 1. Energy saving and emission reduction: Different from the traditional way of directly discharging high-temperature flue gas, this system re-introduces the flue gas treated by the dust removal equipment into the air inlet of the grinder, thereby realizing the recycling of part of the flue gas, reducing external emissions, and making full use of the waste heat in the flue gas to dry the material, etc., which meets the requirements of energy saving and emission reduction. At the same time, the flue gas moisture content during vertical milling is high (the comprehensive moisture content of the inlet material during slag micropowder production is about 8%), and combined with the linear burner, it is even lower in nitrogen.

[0015] 2. Improve energy utilization: The heat energy in the high-temperature flue gas that was originally discharged as exhaust gas can continue to play a role in the grinder, such as continuously providing heat for material drying, so that energy can be more fully utilized in the entire micro-powder product preparation process, reducing the energy cost in the production process.

[0016] 3. Environmental compliance support: Under the current ultra-low emission environment requirements, the recycling and reasonable disposal of high-temperature flue gas, combined with the purification of flue gas by dust removal equipment, will help to make the emissions involved in the entire micro-powder product preparation process better meet the compliance standards and reduce the risk of excessive emissions due to the use of hot air furnaces and process processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of a micro powder product preparation system in the present invention; Figure 2 It is a schematic diagram of the internal structure of the dust removal equipment in the present invention; Figure 3 It is a schematic diagram of the structure of the dust removal bag in the present invention; Figure 4 It is a schematic diagram of the internal structure of the dust removal bag in the present invention; Figure 5 For the present invention Figure 4 Enlarged view of part A in the middle; Figure 6 For the present invention Figure 4 Enlarged view of middle part B; Figure 7 It is a schematic diagram of the through hole structure in the present invention; Figure 8 For the present invention Figure 6 Enlarged view of part C in the middle.

[0019] In the figure: 1. grinder, 2. dust removal equipment, 201. dust removal body, 202. dust bag group, 2021. frame, 2022. dust bag parts, 2023. recoil nozzle, 2024. through hole, 2025. step ring part, 2026. storage groove, 2027. nozzle, 2028. baffle, 2029. threaded part, 3. connecting pipe one, 4. connecting pipe two, 401. smoke exhaust pipe, 5. induced draft fan, 6. burner, 7. top part, 8. brush part, 9. elastic part, 10. partition, 1001. avoidance hole, 11. interval, 12. force cylinder, 1201. connecting port, 13. turntable, 1301. ring groove, 14. knocking part, 15. support rod. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0021] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, proposes a micro powder product preparation system, including: a grinder 1 having an air inlet and a smoke exhaust port; a dust removal device 2 is arranged stationary relative to the grinder 1 and is located on one side of the grinder 1; both ends of the connecting pipe 1 3 are respectively connected to the smoke exhaust port and the dust removal device 2; both ends of the connecting pipe 2 4 are respectively connected to the dust removal device 2 and the air inlet; and an induced draft fan 5 is arranged on the connecting pipe 2 4.

[0025] Furthermore, the connecting pipe 2 4 has a smoke exhaust pipe 401 , and also includes: a burner 6 is arranged in the connecting pipe 2 4 .

[0026] In this embodiment, the working process of the micro powder product preparation system is as follows: Firstly, in the preparation process of micro powder products, the vertical mill - grinder 1 will generate high-temperature flue gas with impurities such as dust when working. These high-temperature flue gases are discharged from the exhaust port and enter the dust removal equipment 2 through the connecting pipe 1 3. The high-temperature flue gas is subjected to dust removal treatment to remove impurities such as dust particles therein, so that the flue gas is purified. Finally, the flue gas after dust removal is reintroduced into the air inlet of the grinder 1 through the connecting pipe 2 4 under the action of the induced draft fan 5, and re-participates in the drying process of the material, etc., and the cycle is repeated to continuously improve the energy utilization efficiency and reduce external emissions.

[0027] Part of the flue gas will be discharged from the smoke exhaust 401, and the remaining gas will be fully burned by the burner 6 to reduce the generation and emission of nitrogen. In this solution, the refractory material is coated in the connecting pipe 2 4 as a combustion chamber, and the air distribution does not require a separate blower. The combustion process uses as much flue gas in the secondary return air as possible. The principle of low nitrogen is to use the porous burner of the linear burner 6 to disperse the local temperature of the natural gas, thereby reducing the generation of nitrogen; The proportion and volume of air required for combustion in the entire production line are adjusted by the valves on the smoke exhaust chimney 401 and the connecting pipe 2 4 as well as the cold mixing valve at the pipe outlet. The advantage of this system is that it reduces the emission of hazardous flue gas. Flue gas recirculation can reduce the generation of nitrogen oxides during combustion, achieving ultra-low emissions for environmental protection. In addition, it reduces the investment in a single hot blast furnace combustion chamber and gas outlet pipeline, does not take up space, simplifies pipelines, reduces heat dissipation, and allows better control and adjustment of the production line operation.

[0028] Specific installation form: Grinding machine 1 selects a vertical mill of appropriate specifications and models as grinding machine 1 according to the required output of micro-powder products and material characteristics (such as hardness, particle size, etc.), and determines its power, grinding chamber size, inlet and outlet pipe diameter and other parameters to ensure that it can meet the production scale and the requirements of good connection with subsequent equipment. For example, if you are processing minerals with higher hardness to prepare micro-powder, you need to choose a vertical mill model with stronger grinding force and better wear resistance. At the same time, you need to determine the appropriate processing capacity specifications based on the estimated output, and reasonably reserve the inlet and outlet pipe diameters to connect to subsequent pipelines; and common dust removal equipment 2 includes bag dust collectors, electrostatic dust collectors, cyclone dust collectors, etc., and you can choose a single type or use them in combination according to actual conditions. In this solution, a bag dust collector is used to ensure that it has sufficient dust removal capacity to ensure the cleanliness of the flue gas for subsequent recycling.

[0029] Furthermore, the dust removal equipment 2 is a bag dust collector, and the dust removal equipment 2 includes: a dust removal body 201 is arranged stationary relative to the grinder 1, the dust removal body 201 has a dust removal space, the dust removal space has an inlet and an outlet, the two ends of the connecting pipe 3 are respectively connected to the smoke exhaust port and the inlet, and the two ends of the connecting pipe 2 4 are respectively connected to the outlet and the air inlet; a plurality of dust bag groups 202 are arranged in the dust removal space, and the plurality of dust bag groups 202 are arranged along a matrix.

[0030] Furthermore, the dust bag group 202 includes: a frame 2021 that is detachably arranged on the inner wall of the dust removal body 201, and the frame 2021 is cylindrical; the dust bag part 2022 is covered on the outer wall of the frame 2021; the recoil nozzle 2023 is arranged in the dust removal space, and the recoil nozzle 2023 is configured to recoil the dust bag part 2022 from the inner wall of the frame 2021.

[0031] In this embodiment, a plurality of dust bag groups 202 arranged along a matrix are used, which greatly increases the filtration area and can effectively capture tiny dust particles in the flue gas, significantly reducing the dust content of the exhaust gas. The cylindrical dust bag members 2022 cooperate with the frame 2021 to provide a stable filtration structure, ensuring continuous and efficient interception of dust during long-term operation, thereby improving the stability and reliability of the entire micro-powder product preparation system.

[0032] At the same time, the frame 2021 of the dust bag group 202 is detachably arranged on the inner wall of the dust removal body 201. When the dust bag 2022 reaches the end of its service life or is damaged and needs to be replaced, the operator can easily and quickly remove it for separate replacement, and the setting of the recoil nozzle 2023 can regularly perform recoil cleaning operations on the dust bag 2022. By recoiling the dust bag 2022 from the inner wall of the frame 2021, the dust attached to the surface of the bag can fall off and fall into the ash hopper under the impact of the airflow, thereby effectively restoring the air permeability of the dust bag.

[0033] During operation, the high-temperature dust-containing flue gas generated by the grinder 1 is discharged from the exhaust port, enters the inlet of the dust removal body 201 of the bag dust collector through the connecting pipe 1 3, and then enters the dust removal space. At this time, the flue gas begins to contact with a number of dust removal bag groups 202 arranged along the matrix. When the flue gas passes through the dust removal bag group 202, the dust particles are adsorbed on the outer surface of the dust removal bag 2022 due to inertial collision, interception, diffusion, etc., and the clean flue gas after filtration passes through the bag into the bag and flows toward the outlet direction of the dust removal body 201. It is then introduced into the air inlet of the grinder 1 by the induced draft fan 5 (5) through the connecting pipe 2 4 and re-participates in the material drying and grinding process, thereby realizing the recycling of flue gas, improving energy utilization efficiency, and reducing pollution emissions to the environment.

[0034] Specific installation forms of each component: The dust collector body 201 adopts common shapes such as a rectangular parallelepiped or a cylinder to ensure that there is enough space inside to accommodate the dust bag group 202, and the position distribution of the smoke inlet and outlet is taken into consideration during the design so that it can be efficiently and sealedly connected to the connecting pipe 1 3 and the connecting pipe 2 4, and is made of high-temperature resistant and corrosion-resistant metal materials (such as carbon steel lining with anti-corrosion coating or stainless steel). At the same time, necessary inspection doors, observation windows and other components are provided on the outer casing to facilitate operators to inspect, maintain and replace bags inside the equipment. The remaining components can adopt the traditional bag dust collector structure.

[0035] Furthermore, the dust bag 2022 is a flexible dust bag, and the bottom of the frame 2021 has a through hole 2024, and also includes: a top piece 7 is movably arranged in the dust removal space, and is located below the frame 2021. The top piece 7 is configured to support and drive the bottom of the dust bag 2022 after movement, and pass through the through hole 2024 to the frame 2021; the brush piece 8 is arranged in the dust removal space, and is located below the frame 2021. The brush piece 8 is annular, and the brush piece 8 is configured so that after the top piece 7 moves, the brush piece 8 cleans the bottom of the outer wall of the dust bag 2022.

[0036] In this embodiment, since the nozzle 2027 of the recoil process usually takes in air at the top of the frame 2021, and the inlet of the bag filter is usually at the bottom, it is difficult to clean the bottom of the dust bag 2022 in the long term, so the top member 7 and the brush member 8 are provided, and the action process is as follows: First, the top piece 7 is located at the initial position below the frame 2021, and the driving device of the top piece 7 (such as a cylinder, an electric push rod, etc., depending on the actual design) is started. The top piece 7 begins to move upward, gradually approaches and supports the bottom of the dust bag 2022. As the top piece 7 continues to rise, it pushes the bottom of the flexible dust bag 2022 upward, so that the protrusion at the bottom of the bag gradually passes through the through hole 2024 at the bottom of the frame 2021 and extends into the frame 2021. The selection of the flexible material can have It has a certain tensile property to avoid being broken; at the same time, since the brush is located at the bottom of the frame 2021 and is arranged close to it, during the movement of the top piece 7, the bottom outer wall of the dust bag 2022 can gradually come into close contact with the brush piece 8, and the dust particles attached to the bottom of the bag are brushed off and collected in the ash hopper through the scraping and sweeping action of the bristles. The whole action will not be too long to avoid damaging the dust bag 2022, and because only the bottom outer wall of the dust bag 2022 needs to be cleaned.

[0037] After that, reset and start the descending driving device of the top member 7, the top member 7 slowly falls back to the initial position, and the dust bag member 2022 also needs to be restored to the initial state to ensure the continuous and efficient operation of the bag dust collector.

[0038] This structure can achieve deep cleaning of the bottom of the outer wall of the dust bag 2022 through the coordinated use of the top piece 7 and the brush piece 8, because this area is usually where dust is easily accumulated and difficult to completely remove through conventional recoil cleaning; the bottom of the bag is lifted up by the top piece 7 and passes through the through hole 2024 at the bottom of the frame 2021, so that the brush piece 8 can directly contact and clean the dust in this area, effectively preventing the problem of reduced air permeability and reduced filtration efficiency of the bag due to excessive dust accumulation at the bottom.

[0039] Furthermore, the frame 2021 has a stepped ring portion 2025 at the top, a storage groove 2026 at the bottom of the stepped ring portion 2025, and the top of the dust bag 2022 is located in the storage groove 2026. It also includes: an elastic member 9 is arranged in the storage groove 2026, and the two ends of the elastic member 9 are respectively connected to the dust bag 2022 and the stepped ring portion 2025, and the elastic member 9 is configured to prevent the top of the dust bag 2022 from escaping from the storage groove 2026.

[0040] In this embodiment, it is further considered that during the lifting process of the top piece 7, in order to prevent the top of the dust bag 2022 from detaching from the frame 2021, on the one hand, the connection area between the internal space of the frame 2021 and the dust removal space is increased, resulting in a worse backwashing effect; on the other hand, the resetting ability of the dust bag 2022 is taken into consideration.

[0041] Therefore, an elastic member 9 is added. Specifically, part of the top of the dust bag 2022 can be stacked in the storage slot 2026 at the bottom of the stepped ring 2025 in advance, instead of the traditional method of directly fixing the top with bolts, so as to adapt to the stretching process. Even if it is stretched, the top of the dust bag 2022 will not be separated from the storage slot 2026 through the stock of the stacked part and the action of the elastic member 9, thereby avoiding the increase of the connecting area. The setting of the elastic member 9 provides additional fastening force for the connection between the dust bag 2022 and the frame 2021. During the operation of the system, especially under the force generated by flue gas impact, equipment vibration, and recoil cleaning operations, the elastic member 9 can continuously apply tension to the top of the bag, making it fit tightly in the storage slot 2026, effectively preventing the top of the bag from accidentally detaching from the frame 2021 due to external forces.

[0042] Furthermore, the cross-sectional area of ​​the top member 7 is smaller than that of the through hole 2024 , the recoil nozzle 2023 is located in the frame 2021 , the bottom of the recoil nozzle 2023 has a nozzle 2027 , and the nozzle 2027 is spaced apart from the through hole 2024 , and the top member 7 moves closer to or away from the nozzle 2027 .

[0043] In this embodiment, the cross-sectional area of ​​the top piece 7 is smaller than that of the through hole 2024, which can reduce excessive friction and collision when the top piece 7 frequently rises and falls through the through hole 2024, and avoid space for the ejected part to facilitate better recoil, avoiding jamming or obstruction due to being too close to the size of the through hole 2024.

[0044] The setting of the interval 11 between the nozzle 2027 of the recoil nozzle 2023 and the through hole 2024 allows the recoil airflow to form a relatively closed and concentrated airflow field at the bottom of the bag. The powerful airflow can more effectively impact and peel off the dust attached to the bottom of the bag. Compared with the traditional recoil method, the cleaning effect of this local area is significantly improved, and the recoil effect on the dust removal bag 2022 as a whole is not affected, and it is more conducive to the recoil effect during the movement of the top piece 7.

[0045] Furthermore, the recoil nozzle 2023 also has a blocking portion 2028, which is located on the outer wall of the nozzle 2027, and also includes: a partition 10 is movably set in the frame 2021, located in the interval 11, and the inner partition 10 abuts or cancels the abutment against the blocking portion 2028 after moving, and the partition 10 is configured to isolate the nozzle 2027 from jetting upward after moving, and the top member 7 is configured to support and drive the bottom of the dust bag 2022 after moving, pass through the through hole 2024 to the frame 2021, and drive the partition 10 to move.

[0046] Furthermore, the partition 10 has an avoidance hole 1001, and also includes: a force-bearing cylinder 12 is arranged at the bottom of the partition 10, and the top piece 7 is configured to drive the partition 10 to move through the force-bearing cylinder 12 after moving, and the force-bearing cylinder 12 has a plurality of connecting ports 1201, and the plurality of connecting ports 1201 are arranged along the circumference of the force-bearing cylinder 12.

[0047] In this embodiment, the installation of the partition 10 and the cooperation with the baffle 2028 enable the jet direction of the recoil nozzle 2023 to be accurately controlled. When there is no need to recoil and clean the bottom of the bag, that is, when the bottom of the dust bag 2022 is forcefully cleaned, the top piece 7 gradually lifts the partition 10 to abut the baffle 2028, preventing the nozzle 2027 from jetting upward, thereby avoiding unnecessary recoil of other parts of the bag by the recoil airflow and increasing the recoil pressure on the bottom of the dust bag 2022. The configuration of the force-bearing cylinder 12 is an adaptive adjustment made to achieve the above purpose, which avoids the top piece 7 from blocking the nozzle 2027 and smoothly pushes the partition 10 up.

[0048] Specific action process: the partition 10 is located below the blocking part 2028 in the initial position. When the recoil cleaning operation is required, the nozzle 2027 sprays air, and the top piece 7 starts to start the upward movement to contact the force-bearing cylinder 12 set at the bottom of the partition 10, pushing the partition 10 to rise until it abuts against the blocking part 2028. At this time, the upward airflow is blocked, and the compressed air in the recoil nozzle 2023 is ejected downward from the nozzle 2027 to form a strong recoil airflow, so as to realize high-pressure recoil at the bottom of the dust bag 2022.

[0049] Due to the presence of several connecting ports 1201 on the force-bearing cylinder 12, when the top piece 7 pushes the partition 10 to move, the air pressure inside and outside the force-bearing cylinder 12 can be kept balanced, ensuring that the partition 10 can move upward smoothly, while avoiding affecting the recoil action and suppressing the airflow in the force-bearing cylinder 12; and the avoidance hole 1001 is similarly for avoiding the position of the nozzle 2027.

[0050] When the top piece 7 drives the bottom of the dust bag 2022 to pass through the through hole 2024, it simultaneously drives the partition 10 to move, thereby releasing the isolation of the nozzle 2027, so that the recoil airflow can accurately act on the key area of ​​the bottom of the bag. This linkage mechanism ensures that the recoil airflow to this part is only turned on when the bottom of the bag needs to be cleaned, which greatly enhances the targetedness and effect of cleaning, can more effectively remove the stubborn dust accumulated at the bottom of the bag, and improve the air permeability and filtration performance of the bag.

[0051] Furthermore, the recoil nozzle 2023 also has a threaded portion 2029, which is located above the blocking portion 2028, and also includes: a turntable 13 is sleeved on the recoil nozzle 2023 and threadedly connected to the threaded portion 2029, and the bottom of the turntable 13 has an annular groove 1301; a knocking piece 14 is arranged at the edge of the turntable 13 through a torsion spring, and the turntable 13 rotates to drive the knocking piece 14 to knock on the inner wall of the frame 2021; a plurality of support rods 15 are all arranged on the top of the partition 10, and one end of the plurality of support rods 15 are all located in the annular groove 1301, and the partition 10 moves to drive the turntable 13 to rotate.

[0052] In this embodiment, during the operation of the bag filter, only relying on the backwash airflow to clean the bags may not be able to completely remove some stubbornly attached dust particles. By designing the turntable 13, the knocking member 14 and the related linkage structure, mechanical knocking vibration is introduced to assist in cleaning.

[0053] The specific action process is as follows: first, the partition 10 is located in the interval 11, below the stopper 2028, and the knocking piece 14 is maintained in the initial position under the action of the torsion spring and does not contact the inner wall of the frame 2021. Since one end of the support rods 15 is located in the annular groove 1301 at the bottom of the turntable 13, the turntable 13 is also stably supported. Then, the backwash is started, and the top piece 7 begins to rise, driving the partition 10 to move upward, thereby pushing the turntable 13 to rotate along the threaded portion 2029 of the recoil nozzle 2023, and then the knocking piece 14 arranged at its edge begins to swing back and forth under the action of the torsion spring, and contacts the inner wall of the frame 2021 by reciprocating knocking. At the same time, recoil is also in progress, and the act of knocking the frame 2021 can further improve the recoil effect. This action is carried out until it abuts against the stopper 2028, and vice versa.

[0054] Through clever structural design, multiple cleaning actions are integrated into a linkage system, which reduces additional drive components and complex control systems, reduces the probability of equipment failure, and the coordinated work between various components makes the cleaning process more stable and reliable.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A micro powder product preparation system, characterized in that: include: A grinder (1), the grinder (1) having an air inlet and a smoke exhaust port; A dust removal device (2), the dust removal device (2) being arranged stationary relative to the grinder (1) and being located on one side of the grinder (1); A connecting pipe (3), wherein two ends of the connecting pipe (3) are respectively connected to the smoke exhaust port and the dust removal device (2); A second connecting pipe (4), the two ends of which are respectively connected to the dust removal device (2) and the air inlet; An induced draft fan (5), the induced draft fan (5) being arranged on the second connecting pipe (4).

2. A micro powder product preparation system according to claim 1, characterized in that: The connecting pipe 2 (4) has a smoke exhaust pipe (401) and also includes: A burner (6), wherein the burner (6) is arranged in the second connecting pipe (4).

3. A micro powder product preparation system according to claim 1, characterized in that: The dust removal device (2) is a bag dust collector, and the dust removal device (2) comprises: A dust removal body (201), the dust removal body (201) being arranged stationary relative to the grinding machine (1), the dust removal body (201) having a dust removal space, the dust removal space having an inlet and an outlet, the two ends of the connecting pipe 1 (3) being connected to the smoke exhaust port and the inlet respectively, and the two ends of the connecting pipe 2 (4) being connected to the outlet and the air inlet respectively; A plurality of dust removal bag groups (202), wherein the plurality of dust removal bag groups (202) are all arranged in the dust removal space, and the plurality of dust removal bag groups (202) are arranged along a matrix.

4. A micro powder product preparation system according to claim 3, characterized in that: The dust removal bag assembly (202) comprises: A frame (2021), the frame (2021) being detachably arranged on the inner wall of the dust removal body (201), and the frame (2021) being cylindrical; A dust removal bag (2022), wherein the dust removal bag (2022) is covered on the outer wall of the frame (2021); A recoil nozzle (2023), wherein the recoil nozzle (2023) is arranged in the dust removal space, and the recoil nozzle (2023) is configured to recoil the dust removal bag (2022) from the inner wall of the frame (2021).

5. A micro powder product preparation system according to claim 4, characterized in that: The dust removal bag (2022) is a flexible dust removal bag, the bottom of the frame (2021) has a through hole (2024), and further comprises: A top piece (7), the top piece (7) being movably disposed in the dust removal space and located below the frame (2021), the top piece (7) being configured to support and drive the bottom of the dust removal bag (2022) after movement, and pass through the through hole (2024) into the frame (2021); A brush member (8), the brush member (8) being arranged in the dust removal space and located below the frame (2021), the brush member (8) being annular, and being configured such that after the top member (7) moves, the brush member (8) cleans the bottom of the outer wall of the dust removal bag member (2022).

6. A micro powder product preparation system according to claim 5, characterized in that: The frame (2021) has a stepped ring portion (2025) at the top, the stepped ring portion (2025) has a storage groove (2026) at the bottom, the top of the dust removal bag (2022) is located in the storage groove (2026), and further comprises: An elastic member (9), the elastic member (9) being arranged in the storage groove (2026), the two ends of the elastic member (9) being respectively connected to the dust removal bag member (2022) and the stepped ring portion (2025), the elastic member (9) being configured to prevent the top of the dust removal bag member (2022) from detaching from the storage groove (2026).

7. A micro powder product preparation system according to claim 5, characterized in that: The cross-sectional area of ​​the top member (7) is smaller than the cross-sectional area of ​​the through hole (2024); the recoil nozzle (2023) is located in the frame (2021); a nozzle (2027) is provided at the bottom of the recoil nozzle (2023); and the nozzle (2027) is spaced apart from the through hole (2024); the top member (7) moves closer to or farther away from the nozzle (2027).

8. A micro powder product preparation system according to claim 7, characterized in that: The recoil nozzle (2023) further comprises a stopper (2028), wherein the stopper (2028) is located on the outer wall of the nozzle (2027), and further comprises: A partition (10), wherein the partition (10) is movably arranged in the frame (2021) and is located in the interval (11), wherein the partition (10) abuts against or cancels the abutment against the blocking portion (2028) after movement, and the partition (10) is configured to isolate the nozzle (2027) from jetting upward after movement, and the top member (7) is configured to abut and drive the bottom of the dust bag member (2022) after movement, pass through the through hole (2024) into the frame (2021), and drive the partition (10) to move.

9. A micro powder product preparation system according to claim 8, characterized in that: The partition plate (10) has an avoidance hole (1001), and further comprises: A force-bearing cylinder (12), wherein the force-bearing cylinder (12) is arranged at the bottom of the partition (10), and the top member (7) is configured to drive the partition (10) to move through the force-bearing cylinder (12) after moving, and the force-bearing cylinder (12) has a plurality of connecting ports (1201), and the plurality of connecting ports (1201) are arranged along the circumference of the force-bearing cylinder (12).

10. A micro powder product preparation system according to claim 8, characterized in that: The recoil nozzle (2023) further comprises a threaded portion (2029), wherein the threaded portion (2029) is located above the blocking portion (2028), and further comprises: A rotating disk (13), the rotating disk (13) being sleeved on the recoil nozzle (2023) and being threadedly connected to the threaded portion (2029), and the bottom of the rotating disk (13) being provided with an annular groove (1301); A knocking member (14), wherein the knocking member (14) is arranged at the edge of the rotating disk (13) via a torsion spring, and when the rotating disk (13) rotates, the knocking member (14) is driven to knock against the inner wall of the frame (2021); A plurality of support rods (15), wherein the plurality of support rods (15) are arranged on the top of the partition plate (10), and one end of the plurality of support rods (15) is located in the annular groove (1301), and the partition plate (10) drives the rotating disk (13) to rotate after the movement.

Images