Collecting device for superfine silicon-titanium powder for cloth bag dust removal

Abstract

A superfine silicon-titanium powder collecting device for cloth bag dust removal comprises a waste gas pipe, a waste gas reversing valve and two cloth bag dust removers, the two cloth bag dust removers are arranged side by side, the upper portions of the cloth bag dust removers are provided with gas purification chambers, the middle portions of the cloth bag dust removers are provided with cloth bag chambers, the lower portions of the cloth bag dust removers are provided with powder collecting chambers, and exhaust ports are formed in the tops of the gas purification chambers. A plurality of orderly-arranged cloth bags are arranged in the cloth bag chamber, an air inlet is formed in the side face of the powder collecting chamber, and an ash discharging opening is formed in the bottom of the powder collecting chamber; according to the bag-type dust collector, a back-blowing frame is arranged in an upper air purification chamber, bag back-blowing pipes with the same number as the bags are arranged on the back-blowing frame in a suspended mode, and the bag back-blowing pipes extend downwards to the positions close to openings of the bags. According to the utility model, the collection rate of superfine silicon-titanium powder can be improved, dust leakage is reduced, and the dust cleaning effect of the cloth bag is enhanced, so that the environmental protection property and economical efficiency of the whole production process are improved.

Description

Technical Field

[0001] This application relates to the field of powder production equipment technology, specifically to a bag filter dust collector for collecting ultrafine silicon titanium powder. Background Technology

[0002] The main functions of silicon-titanium powder as a fertilizer include promoting plant growth, increasing crop yield and quality, and enhancing crop disease resistance and adaptability. Silicon-titanium powder can promote root development, improve the plant's ability to absorb and utilize nutrients, thereby increasing crop yield and quality. It can also enhance crop disease resistance, reduce the occurrence of diseases, and ensure crop growth and yield.

[0003] The process of producing silicon-titanium powder in the factory involves ball milling silicon- and titanium-containing ores into a slurry using a ball mill, then removing most of the water using a filter press to make mud cakes. After the mud cakes are dried, they are processed into fine powder using a Raymond mill and can be used directly as fertilizer.

[0004] The Raymond mill is a high-fineness powder processing device. During operation, the material to be pulverized is fed into the mill through the feed hopper on the side of the casing. The grinding rollers, suspended on the main frame, revolve around the vertical axis while simultaneously rotating on their own axis. Due to centrifugal force during rotation, the grinding rollers swing outwards, pressing tightly against the grinding ring. A scraper scoops up the material and delivers it between the grinding rollers and the grinding ring, where the rolling and crushing action of the rollers achieves the purpose of pulverizing the material. After grinding, a blower blows air into the main casing, agitating the powder. The powder is then sorted by an analyzer located above the grinding chamber. Material that is too coarse falls back into the grinding chamber for regrinding, while material of the correct fineness enters the cyclone collector with the airflow. After collection, it is discharged through the powder outlet as the finished product. Because some silicon-titanium powder is ground into ultrafine powder in the Raymond mill, this ultrafine powder continues to drift under the influence of the airflow after passing through the cyclone collector and does not settle, eventually being discharged through the exhaust pipe. To prevent dust pollution, a dust removal device is installed on the exhaust gas pipeline, so that the discharged exhaust gas is free of dust pollution.

[0005] Because this portion of ultrafine silicon titanium powder was previously neglected and treated as solid waste, resulting in enormous waste, collecting it and using it as fertilizer is a problem that needs to be solved. Utility Model Content

[0006] In view of this, this application provides a bag filter dust collector for collecting ultrafine silicon titanium powder, which collects ultrafine silicon titanium powder produced by Raymond mill, avoiding waste. This device can improve the collection rate of ultrafine silicon titanium powder, reduce dust leakage, and enhance the dust removal effect of bag filter, thereby improving the environmental protection and economy of the entire production process.

[0007] According to one aspect of this application, one embodiment provides a bag filter ultrafine silicon titanium powder collection device, including an exhaust gas pipe, an exhaust gas reversing valve, and a bag filter. There are two bag filters arranged side by side. The exhaust gas pipe includes a main exhaust gas pipe and branch exhaust gas pipes. The main exhaust gas pipe is connected to the exhaust gas reversing valve, and the exhaust gas reversing valve is connected to the two branch exhaust gas pipes. The branch exhaust gas pipes are respectively connected to the air inlets of the two bag filters.

[0008] The baghouse dust collector is a sealed container structure with a clean air chamber at the top, a baghouse chamber in the middle, and a powder collection chamber at the bottom. An exhaust port is located at the top of the clean air chamber. Multiple orderly arranged filter bags are arranged in the baghouse chamber, with their openings facing downwards. An air inlet is located on the side of the powder collection chamber, and a dust discharge port is located at the bottom of the powder collection chamber. A reverse-blowing frame is installed in the upper clean air chamber of the baghouse dust collector. The reverse-blowing frame is equipped with a reverse-blowing pipe, the same number as the filter bags, which extends downwards to near the openings of the filter bags.

[0009] Furthermore, the lower half of the powder collection chamber is cone-shaped, allowing the powder to converge towards the ash discharge port.

[0010] Furthermore, the ash discharge port is equipped with an ash discharge valve.

[0011] Furthermore, the powder collection chamber is provided with a layer of parallel herringbone-shaped feed grids at the junction of the air inlet and the cone-shaped body. The feed inlet is located between the herringbone-shaped feed grids, and the powder below the herringbone-shaped feed grids will not fly around again due to the back-blowing effect of the bag filter pipe.

[0012] Furthermore, the baghouse is equipped with a perforated plate, a bag cage is installed on the perforated plate, and a cloth bag is placed on the bag cage. The perforated plate is sealed to the side wall of the baghouse, so that the exhaust gas can only enter the bag through the bag opening.

[0013] Furthermore, a high-pressure air pipe is installed on the back-blowing frame, which is connected to the bag filter back-blowing pipe. The high-pressure air pipe passes through the side wall of the bag filter and is connected to an external high-pressure air source.

[0014] Furthermore, the bag back-blowing pipe is shaped like a crank handle, with its upper part located at the center of the bag and capable of rotating around the bag. The bag back-blowing pipe has multiple nozzles on the side of the bag, with the nozzles facing the bag.

[0015] Furthermore, the nozzle is a Venturi nozzle.

[0016] Furthermore, the nozzles are equidistantly arranged on one side of the bag backflush pipe located on the side of the bag.

[0017] Furthermore, the bag backflush pipe is equipped with a gear at the top and a geared drive motor is located next to it, which can drive the bag backflush pipe to rotate.

[0018] Furthermore, the bag backflush pipe is equipped with a rotary joint at the top, which is connected to a high-pressure gas pipe, and gas is continuously supplied during the rotation of the bag backflush pipe.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model discloses a bag filter dust collector for collecting ultrafine silicon titanium powder. It comprises two bag filters arranged side-by-side. An exhaust gas pipe connects to an exhaust gas reversing valve, which in turn connects to two branch exhaust gas pipes, each connected to the inlet of one of the two bag filters. This arrangement allows for the diversion and treatment of exhaust gas, improving collection efficiency. Furthermore, when one bag filter requires maintenance, the system can be switched to the other via the exhaust gas reversing valve, ensuring continuous production.

[0021] 2. This utility model discloses a bag filter dust collector for collecting ultrafine silicon titanium powder. Each bag is equipped with a rotatable bag back-blowing pipe. When the bag needs to be back-blown for cleaning, the back-blowing pipe blows out high-pressure air, which acts directly on the bag. This effectively blows the ultrafine silicon titanium powder inside the bag back into the powder collection chamber. This not only enables efficient bag regeneration and ensures the dust removal effect of the bag, but also ensures that all the ultrafine silicon titanium powder collected by the bag is collected, thus improving the collection rate of ultrafine silicon titanium powder. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the bag cage of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the bag filter backflush tube of this utility model.

[0025] In the diagram: 1. Exhaust gas pipe; 11. Main exhaust gas pipe; 12. Branch exhaust gas pipe; 2. Exhaust gas reversing valve; 3. Baghouse dust collector; 31. Clean air chamber; 311. Air outlet; 312. Axial flow fan; 313. Back-blowing frame; 314. Bag back-blowing pipe; 3141. Gear; 3142. Drive motor; 3143. Rotary joint; 3144. Nozzle; 32. Baghouse; 321. Bag; 322. Bag cage; 323. Tube sheet; 33. Powder collection chamber; 331. Air inlet; 332. Herringbone discharge grid; 333. Discharge port; 334. Ash discharge valve. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] Example:

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 According to one aspect of this application, one embodiment provides a bag filter ultrafine silicon titanium powder collection device, including an exhaust pipe 1, an exhaust gas reversing valve 2, and a bag filter 3. There are two bag filters 3 arranged side by side. The exhaust pipe 1 includes a main exhaust pipe 11 and branch exhaust pipes 12. The main exhaust pipe 11 is connected to the exhaust gas reversing valve 2, and the exhaust gas reversing valve 2 is connected to the two branch exhaust pipes 12. The branch exhaust pipes 12 are respectively connected to the air inlets 331 of the two bag filters 3.

[0031] The bag filter 3 is a sealed container structure with a clean air chamber 31 at the top, a bag chamber 32 in the middle, and a powder collection chamber 33 at the bottom.

[0032] The top of the clean air chamber 31 is provided with an exhaust port 311, which is connected to an axial flow fan 312. The axial flow fan 312 is connected to an exhaust pipe, and the exhaust pipes of the two bag filters can be connected in series.

[0033] A back-blowing frame 313 is provided in the upper clean air chamber 31. A high-pressure air pipe is provided on the back-blowing frame 313. The high-pressure air pipe is connected to the bag back-blowing pipe 314. The high-pressure air pipe passes through the side wall of the bag dust collector 3 and is connected to an external high-pressure air source. The back-blowing frame 313 is suspended with the same number of bag back-blowing pipes 314 as the number of bags 321. The bag back-blowing pipes 314 extend downward to near the opening of the bag 321.

[0034] The bag backflush pipe 314 is a crank-shaped, rigid tube, typically made of stainless steel or aluminum alloy. Its upper part is located at the center of the bag 321. A gear 3141 is installed at the top of the bag backflush pipe 314, and a geared drive motor 3142 is located next to it, driving the bag backflush pipe 314 to rotate around the bag 321. Multiple nozzles 3144 are arranged on the side of the bag 321, facing the bag. These nozzles are venturi nozzles, equidistantly spaced on one side of the bag backflush pipe 314 located on the side of the bag 321. A rotary joint 3143 is installed at the top of the bag backflush pipe 314, connecting to a high-pressure air pipe, continuously supplying gas during the rotation of the bag backflush pipe 314.

[0035] The bag chamber 32 contains a plurality of orderly arranged cloth bags 321, the openings of which face downwards.

[0036] The baghouse 32 is equipped with a perforated plate 323, on which bag openings are arranged in an orderly manner. A bag cage 322 is mounted on the perforated plate, positioned at each opening. A filter bag 321 is fitted onto the bag cage 322. The perforated plate 323 is sealed to the side wall of the baghouse 32, allowing exhaust gas to enter the filter bag 321 only through its opening. To improve the collection rate of ultrafine silicon titanium powder, the surfaces of the perforated plate 323 and the bag cage 322 are coated with a layer of polytetrafluoroethylene (PTFE) to form a non-stick layer. For better collection of ultrafine silicon titanium powder, the filter bag 321 can be made of PTFE fiber.

[0037] The powder collection chamber 33 has an air inlet 331 on its side and an ash discharge port 333 at its bottom. The lower half of the powder collection chamber is conical, allowing the powder to converge at the ash discharge port 333. Below the air inlet 331, at the junction of the powder collection chamber and the conical body, there is a layer of parallel herringbone-shaped feed grids 332. The herringbone-shaped feed grids 332 form the powder discharge outlet. The powder below the herringbone-shaped feed grids 332 will not fly around again under the back-blowing action of the bag filter pipe 314. The ash discharge port 333 is equipped with an ash discharge valve 334.

[0038] This utility model discloses a bag filter dust collector for collecting ultrafine silicon titanium powder. The exhaust pipe of the Raymond mill cyclone separator is connected to the main exhaust pipe, which in turn connects to an exhaust gas reversing valve. The exhaust gas then enters the bag filter dust collector through a branch pipe. Since there are two bag filters, the exhaust gas can be used by one bag filter while the other is being cleaned, as the exhaust gas reversing valve allows the exhaust gas to pass through. When the bag filter dust collector is working, the exhaust gas carrying ultrafine silicon titanium powder enters the filter bags and, without being blocked by the bags, falls into the powder collection chamber. Some of the powder adheres to the inner wall of the filter bags. After a period of time, the more ultrafine silicon titanium powder adheres to the inner wall of the filter bags, the lower the dust collection efficiency of the bags becomes. When the efficiency drops to a certain level, the exhaust gas from the bag filter dust collector will not be sufficient to meet the intake exhaust gas demand. At this point, the bag filter dust collector needs to be shut down for backflushing and cleaning. In order to enable the bag filter to operate continuously for a longer period of time, an axial flow fan is connected to the exhaust port. Under the combined action of the positive pressure of the cyclone separator and the negative pressure of the axial flow fan, the filter bag can work for a longer period of time.

[0039] When a baghouse dust collector needs to be shut down for cleaning, the exhaust gas reversing valve is activated, diverting the exhaust gas into another baghouse dust collector, allowing that other baghouse dust collector to operate. Once no more exhaust gas is being introduced into the baghouse dust collector, high-pressure gas is introduced into the bag backflushing pipe located in the clean air chamber. Simultaneously, the drive motor of the bag backflushing pipe starts, causing the pipe to rotate around the filter bag. The airflow from the nozzles of the backflushing pipe will circulate around the filter bag once or several times. This high-pressure airflow acts on the filter bag, flushing the ultrafine silicon titanium powder inside the bag down, causing it to fall into the powder collection chamber, thus regenerating the filter bag.

[0040] The herringbone grid plate installed in the powder collection chamber of the bag filter can effectively block the back-blowing airflow from directly acting on the powder, preventing the powder from flying again.

[0041] The powder collected in the powder collection chamber can be discharged through the ash discharge valve at the discharge port, thus achieving the purpose of collecting ultrafine silicon titanium powder.

[0042] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A cloth bag dust removal ultrafine silicon-titanium powder collecting device, characterized in that: The exhaust pipe, the exhaust valve and the bag filter are included, the bag filter has two and is arranged side by side, the exhaust pipe is connected with the exhaust valve, the exhaust valve is connected with two branch exhaust pipes, and the branch exhaust pipes are connected with the air inlets of the two bag filters respectively; The bag filter is a sealed container structure, the upper part is a clean gas chamber, the middle part is a bag chamber, and the lower part is a powder collecting chamber, the top of the clean gas chamber is provided with an exhaust port, a plurality of bags in an orderly arrangement are arranged in the bag chamber, the opening of the bag faces downward, the side of the powder collecting chamber is provided with an air inlet, and the bottom of the powder collecting chamber is provided with an ash discharge port; the bag filter is provided with a back blowing frame in the upper clean gas chamber, the same number of bag back blowing pipes as the bags are suspended on the back blowing frame, and the bag back blowing pipes extend downward to the position close to the opening of the bag.

2. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 1, characterized in that: The lower half of the powder collecting chamber is a conical body.

3. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 1, characterized in that: The ash discharge port is provided with an ash discharge valve.

4. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 1, characterized in that: The powder collecting chamber is provided with a layer of mutually parallel herringbone unloading grating at the junction of the conical body below the air inlet.

5. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 1, characterized in that: The bag chamber is provided with a flower plate, the flower plate is provided with a bag cage, the bag cage is provided with a bag, and the flower plate is sealingly connected with the side wall of the bag chamber.

6. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 1, characterized in that: The back blowing frame is provided with a high-pressure gas pipe, the high-pressure gas pipe is connected with the bag back blowing pipe, and the high-pressure gas pipe penetrates through the side wall of the bag filter and is connected with the external high-pressure gas source.

7. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 6, characterized in that: The bag back blowing pipe is in the shape of a crank handle, the upper part is located at the central part of the bag, and the bag back blowing pipe can rotate around the bag, a plurality of nozzles are arranged on the side of the bag back blowing pipe, and the nozzles face the bag.

8. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 7, characterized in that: The nozzles are Venturi nozzles, and the nozzles are equidistantly arranged on the side of the bag back blowing pipe.

9. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 7, characterized in that: The bag back blowing pipe is provided with a gear at the top, and a driving motor with a gear is arranged beside the gear.

10. The cloth bag dedusting superfine silicon-titanium powder collecting device according to claim 7, characterized in that: The bag back blowing pipe is provided with a rotary joint at the top and is connected with the high-pressure gas pipe.

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