A dust removal device for a dry-mix mortar machine

Abstract

The utility model discloses a dust removal equipment of dry -mixed mortar machine, including annular cover, first connecting pipe, dust removal box, induced draft fan and ash pipe, the annular cover is located in the upper portion circumferential side of dry -mixed mortar machine to be in communication with dry -mixed mortar machine, first connecting pipe one end is in communication with the annular cover, and the other end is communicated in dust removal box upper end one side, the dust removal box is away from first connecting pipe communication's one end through the pipeline connection with induced draft fan, dust removal box lower extreme is communicated ash pipe upper extreme, ash pipe lower extreme is communicated with the discharge pipe, the discharge pipe is communicated in dry -mixed mortar machine lower extreme. The utility model has the advantages of: through annular cover effective collection dry -mixed mortar machine produces the dust, utilizes the filter screen of multistage gradient filtration to improve filtration efficiency and dust capacity, and the V -shaped box bottom combines the dust scraping plate design and is convenient for the concentration and cleaning of dust, and the dust after cleaning is directly backflowed to the discharge pipe through the ash pipe, realizes recycling, reduces raw material waste and secondary pollution.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal device technical field, especially a kind of dust removal equipment of dry-mixed mortar machine. BACKGROUND

[0002] Dry-mixed mortar machine can proportionally measure, mix dry aggregate (such as sand), cementitious material (such as cement), filler and additive to form dry mixture, which can be directly used by adding water during use. The existing dry-mixed mortar machine is prone to dust during production of dry-mixed mortar. The existing dust removal equipment has poor dust treatment effect and cannot be well recycled. SUMMARY

[0003] The utility model solves the technical problem to provide a kind of dust removal equipment of dry-mixed mortar machine.

[0004] To solve the above technical problem, the technical scheme of the utility model is as follows:

[0005] A kind of dust removal equipment of dry-mixed mortar machine, including annular cover, first connecting pipe, dust removal box, induced draft fan and ash pipe;The annular cover is located in the upper part of the dry-mixed mortar machine and is communicated with the dry-mixed mortar machine;The first connecting pipe is communicated with the annular cover at one end, and the other end is communicated with the upper end of the dust removal box on one side;The dust removal box is connected with induced draft fan by pipeline at the end far from the first connecting pipe communication;The lower end of the dust removal box is communicated with the upper end of ash pipe;The lower end of the ash pipe is communicated with the discharge pipe;The discharge pipe is communicated with the lower end of the dry-mixed mortar machine.

[0006] Further, a valve is arranged at the connection between the dust removal box and the ash pipe.

[0007] Further, the dust removal box comprises a box body, a dust separation member and a dust scraping plate;The dust scraping plate is fixedly connected to the opening at the upper end of the box body;The box body is V-shaped;The dust separation member is inserted into the dust scraping plate, and the upper end is detachably connected to the box body, and the lower end is inclined to abut against one side of the V-shaped bottom surface of the lower end of the box body.

[0008] Further, the dust separation member comprises a sealing cover and a plurality of filter screens with inclined direction towards the induced draft fan;The filter screens are gradually shortened towards the induced draft fan, and the lower end abuts against the inner lower end of the box body.

[0009] Further, the ash pipe comprises a vertical section and an inclined section fixedly connected to the vertical section.

[0010] Further, the pore size of the plurality of filter screens gradually decreases towards the induced draft fan.

[0011] The utility model has the advantages of:

[0012] The dust generated by the dry-mixed mortar machine is effectively collected by the ring cover; the filter screen with multi-stage gradient filtration is used to improve the filtration efficiency and dust capacity; the V-shaped box bottom combined with the dust scraping plate design facilitates the concentration and cleaning of the dust; the cleaned dust is directly returned to the discharge pipe through the ash discharge pipe, realizing recycling, reducing raw material waste and secondary pollution. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the utility model;

[0014] Fig. 2 It is a structural schematic view of the dust removal box.

[0015] In the drawings,

[0016] 1-ring cover, 2-first connecting pipe, 3-dust removal box, 4-inducing fan, 5-ash discharge pipe, 6-dry-mixed mortar machine, 7-discharge pipe, 8-valve;

[0017] 31-box, 32-dust isolation piece, 33-dust scraping plate;

[0018] 321-sealing cover, 322-filter screen;

[0019] 51-vertical section, 52-inclined section. DETAILED DESCRIPTION

[0020] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] Referring to Figs. 1-2 Fig. 1, a dust removal equipment of dry-mixed mortar machine includes ring cover 1, first connecting pipe 2, dust removal box 3, inducing fan 4 and ash discharge pipe 5; ring cover 1 is arranged on the upper part of the side of dry-mixed mortar machine 6 and communicates with dry-mixed mortar machine 6; one end of first connecting pipe 2 communicates with ring cover 1, and the other end communicates with one side of the upper end of dust removal box 3; the end of dust removal box 3 far from the communication of first connecting pipe 2 is connected with inducing fan 4 through pipeline; the lower end of dust removal box 3 communicates with the upper end of ash discharge pipe 5; the lower end of ash discharge pipe 5 communicates with discharge pipe 7; discharge pipe 7 communicates with the lower end of dry-mixed mortar machine 6.

[0022] It should be noted that the dry-mix mortar machine 6 is equipped with a dust removal device according to this utility model. The dust removal device is mainly used to collect the dust generated during the mixing process of the dry-mix mortar machine 6, improve the working environment, and recover some raw materials. The annular cover 1 is generally circular or has a shape matching the upper contour of the dry-mix mortar machine 6 (e.g., a square annular shape). It is fixedly fitted onto the upper circumference of the cylinder of the dry-mix mortar machine 6. The inner edge of the annular cover 1 forms an annular gap with the outer wall of the cylinder of the dry-mix mortar machine 6 or is sealed by flanges or other connecting parts, ensuring that the dust-laden gas generated inside the dry-mix mortar machine 6 can be effectively drawn into the inner cavity of the annular cover 1, that is, the inner cavity of the annular cover 1 is connected to the internal space of the dry-mix mortar machine 6. The annular cover 1 is usually made of metal plates (such as stainless steel or carbon steel) welded or bolted together. The first connecting pipe 2 is a section of pipe, preferably a steel pipe with a circular cross-section or a wear-resistant flexible hose. One end (the inlet end) is connected to an exhaust port fixed on the outer wall of the annular cover 1 by flange connection or welding. The exhaust port can be positioned on the top or upper side of the annular hood 1 as needed. The other end (outlet end) of the first connecting pipe 2 is connected to the air inlet fixed on one side of the upper end of the dust collector 3. The function of the first connecting pipe 2 is to transport the dust-laden gas collected by the annular hood 1 to the dust collector 3. The dust collector 3 is the core component for dust separation. The induced draft fan 4 is connected to the air outlet of the dust collector 3 via a pipe (such as a steel pipe or flexible hose connected by a flange). The induced draft fan 4 provides negative pressure to sequentially draw the dust-laden gas in the dry mortar mixer 6 through the annular hood 1, the first connecting pipe 2, and the dust collector 3 (filtered by filter screen 322), and then discharges the purified gas. The power and air volume of the induced draft fan 4 need to be selected according to the specifications of the dry mortar mixer 6 and the amount of dust generated. The dust discharge pipe 5 is used to discharge the dust collected in the dust collector 3. Its upper end is connected to the bottom outlet of the V-shaped funnel fixed at the lower end of the dust collector 3. The lower end of the dust discharge pipe 5 is connected and fixed to the discharge pipe 7 at the lower end of the dry-mix mortar machine 6. This design allows the collected dust to flow directly back into the discharge pipe 7, mix with the finished mortar, and then be discharged, thus realizing the recycling of dust and reducing waste.

[0023] Specifically, a valve 8 is installed at the connection between the dust collector 3 and the ash discharge pipe 5. The valve 8 controls the flow of dust from the dust collector 3 into the ash discharge pipe 5. The valve 8 can be a manual slide gate valve, a manual butterfly valve, a pneumatic butterfly valve, or an electric butterfly valve, etc. During normal filtration, the valve 8 is closed to prevent short-circuiting of the airflow; when ash needs to be discharged or the dust accumulated at the bottom of the dust collector 3 needs to be cleaned, the valve 8 is opened, and the dust falls into the ash discharge pipe 5 under gravity. Pneumatic or electric valves are preferred for easier automatic control.

[0024] Specifically, the dust collector 3 includes a housing 31, a dust separator 32, and a dust scraper 33. The dust scraper 33 is fixedly connected to the opening at the upper end of the housing 31. The housing 31 is V-shaped. The dust separator 32 is inserted into the dust scraper 33, and its upper end is detachably connected to the housing 31, while its lower end inclined against one side of the V-shaped bottom surface of the housing 31. The housing 31 is constructed as a container with a specific shape. Its key feature is that the lower end is V-shaped like a funnel, meaning that the bottom of the housing 31 is formed by two inclined sidewalls converging downwards to create a pointed or narrow bottom that facilitates dust concentration and downward movement. The included angle of the V-shaped bottom surface is between 120° and 180° (e.g., 150° or 160°). The upper end of the housing 31 has an opening. A dust scraper 33 is fixedly connected to the opening at the upper end of the housing 31 (see the dust scraper description below for specific connection details). The housing 31 is generally welded from steel plates, possessing sufficient strength and sealing. An air inlet is provided on one side of the upper end of the housing 31 to connect to the first connecting pipe 2, and an air outlet is provided on the other end (upper or side end) to connect to the duct of the induced draft fan 4. A dust separator 32 is used to clean dust from the airflow; a dust scraper 33 is located at the upper opening of the housing 31. Specifically, the dust scraper 33 is a component with a specific shape (e.g., a rectangular frame or a flat plate with scraping blades), and its fixed connection (e.g., welding or bolting) is at the edge of the upper opening of the housing 31. When the dust separator 32 (especially the sealing cover 321 and the filter screen 322) is installed in place, the position of the dust scraper 33 is usually close to or slightly gapped from the upper end of the filter screen 322. The function of the dust scraper 33 is to clean the dust accumulated on the surface of the filter screen 322 when necessary. During operation, the filter screen 322 can be moved upward relative to the stationary dust scraper 33 by lifting or removing the sealing cover 321. During this process, the edge or scraper of the dust scraper 33 scrapes off the dust adhering to the outer surface of the filter screen 322, causing it to fall into the V-shaped bottom of the housing 31. The material of the dust scraper 33 should be wear-resistant, such as hard plastic or metal.

[0025] Specifically, the dustproof component 32 includes a sealing cover 321 and several filter screens 322 inclined towards the induced draft fan 4; the filter screens 322 gradually shorten towards the induced draft fan 4, and their lower ends abut against the lower inner side of the housing 31. The sealing cover 321 covers the upper opening of the housing 31, and its shape matches the opening (e.g., rectangular or circular). The sealing cover 321 is typically fixedly connected to the upper edge of the housing 31 by a detachable method such as bolts, clips, or quick clamps to ensure the airtightness of the upper part of the housing 31. Several filter screens 322 (e.g., 3, 4, or 5) are fixedly installed on the lower surface of the sealing cover 321 and inserted into the housing 31 along with the sealing cover 321. These filter screens 322 are all arranged at an angle, with their inclination direction facing the side where the induced draft fan 4 is located (i.e., towards the air outlet of the housing 31). The key feature is that the lengths (dimensions along or perpendicular to the airflow direction) of these filters 322 decrease sequentially along the direction towards the induced draft fan 4 (i.e., the airflow direction). For example, the first filter (closest to the air inlet) is the longest, and the last filter (closest to the air outlet) is the shortest. The lower ends of the filters 322 abut against the housing, or hang freely or approach the side wall of the V-shaped bottom surface of the lower inner side of the housing 31. The function of the filters 322 is to intercept dust particles in the gas.

[0026] Specifically, the ash discharge pipe 5 includes a vertical section 51 and an inclined section 52 fixedly connected to the vertical section 51. The vertical section 51 facilitates the falling of dust, while the inclined section 52 facilitates smooth connection with the discharge pipe 7, which also has a certain inclination angle. The angle β between the inclined section 52 and the horizontal plane is preferably between 35° and 55° (e.g., 45°) to ensure that the dust falls smoothly.

[0027] Specifically, several filter screens 322 have progressively smaller pore sizes towards the induced draft fan 4. The first filter screen 322 near the air inlet has a larger pore size (e.g., 100 mesh) to intercept larger particles; the second filter screen 322 in the middle has a medium pore size (e.g., 200 mesh); and the third filter screen 322 near the air outlet has the smallest pore size (e.g., 300 mesh) to intercept fine dust. This gradient filtration design improves filtration efficiency and dust holding capacity, and reduces the clogging rate of a single filter layer. The filter screens 322 can be made of wire mesh, sintered mesh, or other suitable filter materials.

[0028] This application

[0029] The working principle of this utility model:

[0030] During operation, the induced draft fan 4 is started, generating negative pressure in the dust collection box 3; the dust-laden gas generated in the dry-mix mortar machine 6 is drawn into the annular hood 1; the dust-laden gas enters the dust collection box 3 through the first connecting pipe 2; the gas passes through the multi-stage filter screen 322 with decreasing pore size in the dust isolation component 32 in sequence, and the dust is intercepted step by step and adheres to the surface of the filter screen 322; the purified gas passes through the last stage filter screen 322 and is drawn out and discharged by the induced draft fan 4 through the outlet of the dust collection box 3; the dust adhering to the filter screen 322 gradually thickens. When cleaning is required, the induced draft fan 4 (optional) can be turned off, the sealing cover 321 can be opened and lifted (or removed), and the dust scraper 33 fixed on the housing 31 will scrape off the dust on the surface of the filter screen 322. The dust falls into the V-shaped bottom of the housing 31. The valve 8 is opened, and the dust collected at the V-shaped bottom of the housing 31 (including the scraped dust and a small amount of directly settled dust) falls into the discharge pipe 7 of the dry mortar mixer 6 through the ash discharge pipe 5 (through the vertical section 51 and the inclined section 52), mixes with the finished mortar, and is discharged. After cleaning, the sealing cover 321 and the filter screen 322 are reinstalled, the valve 8 is closed, and the system can be restarted.

[0031] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A dust removal apparatus for a dry mortar mixer, characterized by: It includes an annular cover (1), a first connecting pipe (2), a dust collector (3), an induced draft fan (4), and an ash discharge pipe (5); the annular cover (1) is located on the upper periphery of the dry-mixed mortar machine (6) and is connected to the dry-mixed mortar machine (6); one end of the first connecting pipe (2) is connected to the annular cover (1), and the other end is connected to the upper side of the dust collector (3); the end of the dust collector (3) that is away from the first connecting pipe (2) is connected to the induced draft fan (4) through a pipe; the lower end of the dust collector (3) is connected to the upper end of the ash discharge pipe (5); the lower end of the ash discharge pipe (5) is connected to the discharge pipe (7); the discharge pipe (7) is connected to the lower end of the dry-mixed mortar machine (6).

2. The dust removal apparatus for a dry-mix mortar machine according to claim 1, characterized in that: A valve (8) is provided at the connection between the dust collector (3) and the ash discharge pipe (5).

3. The dust removal apparatus for a dry-mix mortar machine according to claim 1, characterized in that: The dust collection box (3) includes a box body (31), a dust separator (32), and a dust scraper (33); the dust scraper (33) is fixedly connected to the opening at the upper end of the box body (31); the box body (31) is V-shaped; the dust separator (32) is inserted into the dust scraper (33), and its upper end is detachably connected to the box body (31), and its lower end is inclined to abut against one side of the V-shaped bottom surface at the lower end of the box body (31).

4. The dust removal apparatus for a dry-mix mortar machine according to claim 3, characterized in that: The dustproof component (32) includes a sealing cover (321) and several filter screens (322) inclined towards the induced draft fan (4); the filter screens (322) become shorter in sequence towards the induced draft fan (4), and the lower end abuts against the lower end of the inner side of the housing (31).

5. The dust removal apparatus for a dry-mix mortar machine according to claim 1, characterized in that: The ash discharge pipe (5) includes a vertical section (51) and an inclined section (52) fixedly connected to the vertical section (51).

6. The dust removal apparatus for a dry-mix mortar machine according to claim 4, characterized in that: The aperture of several filter screens (322) decreases sequentially in the direction of the induced draft fan (4).

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