Distributed dust removal device for concrete processing

Abstract

The invention discloses a decentralized dust removal device for concrete processing, and belongs to the technical field of dust removal devices, the decentralized dust removal device comprises a cyclone separator, the inner side and the outer side of the cyclone separator are jointly provided with a flow guide component, the flow guide component comprises dust suction pipelines fixedly connected to the front side and the rear side of the cyclone separator, and the outer sides of the dust suction pipelines are sleeved with fixing covers; according to the dust collection device, dust-containing gas is guided through the arranged spiral channel, meanwhile, the total gas inlet amount can be increased through the double inlets, due to the fact that the dust-containing gas is sucked into the cyclone separator, the dust collection efficiency is improved, and the dust collection efficiency is improved. According to the cyclone separator, the spiral channel can guide dust-containing gas, meanwhile, the total gas inlet amount can be increased through the double inlets, the dust-containing gas can be more evenly distributed in the cyclone separator, the phenomena of short-circuit flow and bias flow are reduced, and then primary separation of dust and gas in the dust-containing gas is achieved.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, and more specifically, to a decentralized dust removal device for concrete processing. Background Technology

[0002] Concrete is a general term for engineering composite materials that bind aggregates together with cementing materials. The term "concrete" usually refers to cement concrete, also known as ordinary concrete, made by mixing cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion. It is widely used in civil engineering. Concrete processing involves the entire process of making building components through mixing, molding, and curing. The core processes include batching, mixing, transportation, pouring, vibration, and curing. It is widely used in construction and municipal engineering. Concrete processing generates a significant amount of dust, necessitating dust removal devices. These devices, also called dust collectors, are industrial equipment that separates dust from flue gas or air.

[0003] Decentralized dust collection systems connect multiple dust-generating points located close to each other within the same process and production flow. These points are linked by dust collection hoods and short pipelines, all connected to a single dust collection device and a ventilation fan, forming a "multi-source, one-system" localized dust collection unit. This system does not need to cover the entire plant or workshop; it only targets specific dust-generating areas for purification. The working principle of decentralized dust collection systems is mainly based on physical separation technology, including mechanical dust collection and filtration dust collection. Taking a bag filter as an example, dust-laden gas enters the middle chamber through the inlet, then enters the filter bags from the outside. Dust is trapped on the outer surface of the filter bags, and the purified air enters the inside of the bags, then enters the upper chamber from the top of the filter bags, and finally exits through the exhaust pipe.

[0004] In existing technologies, a large amount of dust is generated during concrete processing, and the dust particles are relatively large. Therefore, it is necessary to pre-separate the larger dust particles. Cyclone separators, as a common pre-dust removal device, mainly rely on centrifugal force to separate dust. However, fine particles (such as PM2.5) have small mass and weak inertia, which causes some gas to enter the exhaust pipe directly from the inlet without fully rotating, carrying dust and escaping, resulting in a decrease in separation efficiency. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a decentralized dust removal device for concrete processing.

[0006] To solve the above problems, the present invention adopts the following technical solution, which can realize the spiral channel to guide the dust-laden gas and make the dust-laden gas rotate fully. At the same time, the dual inlet can increase the total air intake and make the dust-laden gas more evenly distributed in the cyclone separator.

[0007] A decentralized dust removal device for concrete processing includes a cyclone separator and a dust collection base disposed at the bottom of the cyclone separator, wherein the inner and outer sides of the cyclone separator are provided with flow guiding components.

[0008] The flow guiding component includes a dust extraction pipe fixedly connected to the front and rear sides of the cyclone separator. A fixed cover is fitted on the outer side of the dust extraction pipe. Two dust extraction covers are fixedly connected to the other end of the dust extraction pipe. A top cover is provided at the top of the cyclone separator. An exhaust pipe is fixedly connected through the center of the upper side of the top cover. Air inlets are provided on both the front and rear sides of the upper part of the inner wall of the cyclone separator. A spiral channel is fixedly connected to the upper part of the inner wall of the cyclone separator. The spiral channel is fitted on the outer side of the exhaust pipe.

[0009] Furthermore, the air inlet is connected to the dust extraction pipe, the exhaust pipe is located at the center of the spiral channel, and the connection end of the dust extraction pipe and the cyclone separator is inclined and connected to the air inlet.

[0010] Furthermore, the cyclone separator is equipped with an anti-back-mixing component, which includes a constricted tube located at the bottom of the exhaust pipe.

[0011] Furthermore, a first limiting block is fixedly connected to both the left and right sides of the inner wall of the exhaust pipe, a second limiting block is fixedly connected to both the left and right sides of the inner wall of the constricted pipe, a first internal thread is provided on the lower side of the exhaust pipe, a first external threaded ring is fixedly connected to the upper side of the constricted pipe, the first external threaded ring is threadedly connected to the inside of the first internal thread, and a honeycomb frame is inserted into the inside of the constricted pipe.

[0012] Furthermore, the upper and lower sides of the honeycomb frame are respectively pressed and contacted with the opposing surfaces of the first limiting block and the second limiting block, the exhaust pipe is connected to the constricted pipe, and the spiral channel is located outside the constricted pipe.

[0013] Furthermore, the inner and outer sides of the constricted tube are provided with a locking component, which includes locking grooves opened on the left and right sides of the honeycomb frame.

[0014] Furthermore, movable grooves are provided on both the left and right sides of the outer surface of the constricted tube, and rotating grooves are provided on both the front and rear sides inside the movable grooves. Rotating rods are rotatably connected inside the rotating grooves, and locking strips are fixedly connected to one end of the opposite face of the rotating rods on both the front and rear sides. The locking strips are rotatably connected inside the movable grooves.

[0015] Furthermore, both the movable groove and the locking bar are bent. The locking bar is inserted into the inside of the locking groove on the upper horizontal part near the locking groove. A pressure spring is fixedly connected between the side of the movable groove near the locking groove and the side of the vertical part of the locking bar near the locking groove.

[0016] Furthermore, the inner and outer sides of the constricted tube are provided with a secondary vortex component, which includes a second internal thread formed on the lower side of the constricted tube.

[0017] Furthermore, the second internal thread is internally threaded to a second external threaded ring, and a fixed cylinder is fixedly connected to the lower side of the second external threaded ring. Inside the fixed cylinder, guide strips are fixedly connected in a ring array, and the guide strips are spirally arranged.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) The present invention guides the dust-laden gas through the spiral channel and the dual inlets can increase the total air intake. After the dust-laden gas is drawn into the cyclone separator, the spiral channel will guide the dust-laden gas. At the same time, the dual inlets can increase the total air intake, which can make the dust-laden gas more evenly distributed in the cyclone separator, reduce short-circuit flow and deflection phenomenon, and thus achieve the initial separation of dust and gas in the dust-laden gas.

[0020] (2) The present invention reduces the flow rate of dust-laden gas by setting a honeycomb frame. Since the honeycomb frame can stabilize the airflow, it helps to maintain the settling state of dust in the cyclone separator, further improving the separation efficiency. At the same time, it increases the flow resistance, which reduces the airflow speed in the exhaust pipe. The lower airflow speed helps to reduce the secondary lifting of dust.

[0021] (3) The present invention guides the gas to make spiral motion again by setting the guide strip, so that the fine dust particles remaining in the gas are further separated under the action of centrifugal force. When the dust-laden gas passes through the inside of the fixed cylinder, the guide strip inside the fixed cylinder will cause the dust-laden gas to rotate twice. The secondary swirling flow can block part of the airflow from rushing directly to the exhaust pipe, reduce the escape of fine particles, prevent the formation of short-circuit flow, and thus achieve deep purification of the gas generated by concrete processing, effectively improving the separation efficiency of fine particles. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the cyclone separator of the present invention;

[0025] Figure 4 This is a cross-sectional view of the cyclone separator of the present invention;

[0026] Figure 5 This is a schematic diagram of the constricted tube structure of the present invention;

[0027] Figure 6 This is a cross-sectional view of the exhaust pipe of the present invention.

[0028] Figure 7 This is a cross-sectional view of the constricted tube of the present invention;

[0029] Figure 8 This is a cross-sectional view of the top cover of the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1. Cyclone separator; 11. Dust collection base; 2. Flow guiding component; 21. Dust extraction pipe; 22. Fixing cover; 23. Dust extraction hood; 24. Top cover; 25. Exhaust pipe; 26. Air inlet; 27. Spiral channel; 28. Anti-back-mixing component; 281. Narrowing pipe; 282. First limiting block; 283. Second limiting block; 284. First internal thread; 285. First external thread ring; 286. Honeycomb frame; 29. ​​Locking component; 291. Locking groove; 292. Movable groove; 293. Rotating groove; 294. Rotating rod; 295. Locking strip; 296. Pressure spring; 3. Secondary cyclone component; 31. Second internal thread; 32. Second external thread ring; 33. Fixing cylinder; 34. Flow guiding strip. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 8 A decentralized dust removal device for concrete processing includes a cyclone separator 1 and a dust collection base 11 disposed at the bottom of the cyclone separator 1. The inner and outer sides of the cyclone separator 1 are provided with a flow guiding component 2.

[0034] The flow guiding component 2 includes a dust extraction pipe 21 fixedly connected to the front and rear sides of the cyclone separator 1. A fixed cover 22 is fitted on the outside of the dust extraction pipe 21. Two dust extraction covers 23 are fixedly connected to the other end of the dust extraction pipe 21. A top cover 24 is provided at the top of the cyclone separator 1. An exhaust pipe 25 is fixedly connected through the center of the upper side of the top cover 24. Air inlets 26 are provided on both the front and rear sides of the upper part of the inner wall of the cyclone separator 1. A spiral channel 27 is fixedly connected to the upper part of the inner wall of the cyclone separator 1. The spiral channel 27 is fitted on the outside of the exhaust pipe 25.

[0035] The air inlet 26 is connected to the dust extraction pipe 21, and the exhaust pipe 25 is located at the center of the spiral channel 27. The connection end of the dust extraction pipe 21 and the cyclone separator 1 is inclined and connected to the air inlet 26.

[0036] By adopting the above technical solution, during the concrete processing, dust-laden gas generated at multiple dust-generating points is drawn into the dust extraction pipe 21 through the dust extraction hood 23 fixed by the fixed cover 22. Since the air inlet 26 is connected to the dust extraction pipe 21, and both dust extraction pipes 21 are inclined to the air inlet 26 at their connection points with the cyclone separator 1, the dust-laden gas enters the air inlet 26 on the upper part of the inner wall of the cyclone separator 1 along the dust extraction pipe 21. Simultaneously, the exhaust pipe 25 is located at the center of the spiral channel 27. After entering the cyclone separator 1, the dust-laden gas, guided by the spiral channel 27, flows along the spiral channel 27... 7. The spiral motion downwards causes the dust-laden gas to generate centrifugal force. Larger dust particles are thrown towards the inner wall of the cyclone separator 1 under the action of centrifugal force and slide down the inner wall to the dust collection base 11 at the bottom. The gas continues to move upwards. After the dust-laden gas is drawn into the cyclone separator 1, the spiral channel 27 guides the dust-laden gas, allowing it to rotate fully. At the same time, the dual inlets can increase the total air intake, making the dust-laden gas more evenly distributed in the cyclone separator 1, reducing short-circuit flow and flow deviation, and thus achieving the initial separation of dust and gas in the dust-laden gas.

[0037] like Figure 2 , Figures 4 to 6 and Figure 8 As shown, the cyclone separator 1 is equipped with an anti-back-mixing component 28, which includes a constriction pipe 281 located at the bottom of the exhaust pipe 25.

[0038] The exhaust pipe 25 has a first limiting block 282 fixedly connected to both the left and right sides of its inner wall, and the constricted pipe 281 has a second limiting block 283 fixedly connected to both the left and right sides of its inner wall. The exhaust pipe 25 has a first internal thread 284 on its lower side, and the constricted pipe 281 has a first external thread ring 285 fixedly connected to its upper side. The first external thread ring 285 is threaded into the inside of the first internal thread 284, and a honeycomb frame 286 is inserted into the inside of the constricted pipe 281.

[0039] The upper and lower sides of the honeycomb frame 286 are pressed and contacted with the opposite surfaces of the first limiting block 282 and the second limiting block 283, respectively. The exhaust pipe 25 is connected to the constricted pipe 281, and the spiral channel 27 is located outside the constricted pipe 281.

[0040] By adopting the above technical solution, the constriction tube 281 is connected to the first internal thread 284 on the lower side of the exhaust port via the first external threaded ring 285. When the dust-laden gas undergoes spiral motion to separate dust in the cyclone separator 1, the gas moves upward to the exhaust pipe 25. The bottom end of the exhaust pipe 25 is provided with a constriction tube 281. The structure of the constriction tube 281 narrows the passage and increases the airflow speed when the gas passes through. According to the principles of fluid mechanics, the increased airflow speed will reduce the pressure, forming a certain negative pressure area. This helps to draw the purified gas more smoothly into the exhaust pipe 25 for discharge, while reducing the gas pressure in the exhaust pipe 25. 5. The back mixing phenomenon at the bottom end, and the honeycomb frame 286 is provided inside the constriction tube 281 through the first limiting block 282 and the second limiting block 283. The honeycomb structure of the honeycomb frame 286 is composed of multiple small channels. When the airflow passes through, it needs to go through multiple turns and contractions, which can stabilize the airflow and reduce the interference of turbulence on the separated dust. Since the honeycomb frame 286 can stabilize the airflow, it helps to maintain the settling state of the dust in the cyclone separator 1, further improving the separation efficiency. At the same time, it increases the flow resistance, which reduces the airflow velocity in the exhaust pipe 25. The lower airflow velocity helps to reduce the secondary lifting of dust.

[0041] like Figures 5 to 7 As shown, the inner and outer sides of the constricted tube 281 are provided with locking components 29, and the locking components 29 include locking grooves 291 opened on the left and right sides of the honeycomb frame 286.

[0042] The outer surface of the constricted tube 281 is provided with movable grooves 292 on both the left and right sides. The movable grooves 292 are provided with rotating grooves 293 on both the front and rear sides. Rotating rods 294 are rotatably connected inside the rotating grooves 293. Locking strips 295 are fixedly connected to the opposite ends of the rotating rods 294 on both the front and rear sides. Locking strips 295 are rotatably connected inside the movable grooves 292.

[0043] Both the movable groove 292 and the locking bar 295 are bent. The locking bar 295 is inserted into the inside of the locking groove 291 on the upper horizontal part near the locking groove 291. A pressure spring 296 is fixedly connected between the side of the movable groove 292 near the locking groove 291 and the side of the vertical part of the locking bar 295 near the locking groove 291.

[0044] By adopting the above technical solution, when it is necessary to install the honeycomb frame 286 into the constricted tube 281, the elastic force of the pressure spring 296 is first overcome, causing the locking strip 295 to rotate within the movable groove 292. When the upper horizontal part of the locking strip 295 moves away from the locking groove 291, the honeycomb frame 286 can be inserted into the constricted tube 281 until the upper and lower sides of the honeycomb frame 286 are pressed into contact with the first limiting block 282 and the second limiting block 283, respectively. Then, the locking strip 295 is released, and under the elastic force of the pressure spring 296, the locking strip 295... The rotating rod 294 rotates inside the rotating groove 293, and its upper horizontal part inserts into the locking groove 291, thereby locking the honeycomb frame 286. Since both the movable groove 292 and the locking strip 295 are bent, the honeycomb frame 286 can be stably locked in the constricted tube 281, ensuring that the honeycomb frame 286 can normally play its role in the anti-back-mixing component 28. At the same time, after the honeycomb frame 286 captures small particles through its honeycomb structure, the small particles inside the honeycomb frame 286 can be cleaned by quick disassembly to prevent the dust from being raised again.

[0045] like Figure 2 and Figures 4 to 8 As shown, the inner and outer sides of the constricted tube 281 are provided with a secondary vortex component 3, which includes a second internal thread 31 formed on the lower side of the constricted tube 281.

[0046] The second internal thread 31 is internally threaded to a second external thread ring 32. A fixed cylinder 33 is fixedly connected to the lower side of the second external thread ring 32. Inside the fixed cylinder 33, guide strips 34 are fixedly connected in a ring array and are arranged in a spiral shape.

[0047] By adopting the above technical solution, when the gas enters the fixed cylinder 33 from the constriction tube 281 upwards, the guide strip 34 will guide the gas to make a spiral motion again. During this spiral motion, the fine dust particles remaining in the gas are further separated under the action of centrifugal force and adhere to the inner wall of the fixed cylinder 33 or the guide strip 34. Subsequently, the airflow enters the honeycomb frame 286 upwards. The honeycomb frame 286 acts as a rectifier to quickly eliminate the rotational kinetic energy of the airflow and form a "zero vortex" region above the fixed cylinder 33. This "lower swirling, upper straightening" structural design utilizes the lower swirling flow to "pin" the dust to the cylinder wall, while the upper straightening flow prevents the separated dust from being re-raised by the central rising airflow. When the equipment stops, the dust agglomerates attached to the inner wall of the fixed cylinder 33 naturally peel off due to the loss of centrifugal support, or can be manually cleaned by unscrewing the fixed cylinder 33. This achieves deep capture and removal of fine dust, while the gas after secondary purification is discharged from the top of the fixed cylinder 33. When the fixed cylinder 33 needs to be cleaned, it can be twisted to disengage the second external threaded ring 32 on the upper side of the fixed cylinder 33 from the second internal threaded ring 31 on the lower side of the constricted tube 281. As the dust-laden gas passes through the inside of the fixed cylinder 33, the guide strip 34 inside the fixed cylinder 33 will cause the dust-laden gas to rotate secondary. The secondary swirling flow can block part of the airflow from directly rushing towards the exhaust pipe 25, reducing the escape of fine particles and preventing the formation of short-circuit flow. This achieves deep purification of the gas generated during concrete processing and effectively improves the separation efficiency of fine particles.

[0048] Working principle: During concrete processing, dust-laden gas from multiple dust-generating points is drawn into the dust extraction pipe 21 through the dust extraction hood 23 and enters the cyclone separator 1 from the air inlet 26 along the inclined connection end. Guided by the spiral channel 27, it moves downward in a spiral. Large dust particles are thrown against the inner wall and slide down to the dust collection base 11, achieving preliminary separation. The purified gas rises to the exhaust pipe 25. The constriction pipe 281 at the bottom of the exhaust pipe 25 narrows the airflow channel and increases the speed, forming a negative pressure to facilitate gas discharge and reduce back mixing. The honeycomb frame 286 inside the constriction pipe 281 is stably installed under the combined action of the first and second limit blocks 283 and the locking component 29, further ensuring the anti-back mixing effect. In addition, when the gas enters the constriction pipe 281 from the fixed cylinder 33, the guide strips 34 arranged in a ring array and spiral shape inside the fixed cylinder 33 guide the gas to swirl twice, so that the residual fine dust is separated under the action of centrifugal force, ultimately achieving deep purification of the gas.

[0049] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A decentralized dust removal device for concrete processing, comprising a cyclone separator (1) and a dust collection base (11) disposed at the bottom end of the cyclone separator (1), characterized in that: The cyclone separator (1) has a flow guide component (2) on both its inner and outer sides. The flow guiding component (2) includes a dust extraction pipe (21) fixedly connected to the front and rear sides of the cyclone separator (1). A fixed cover (22) is fitted on the outer side of the dust extraction pipe (21). Two dust extraction covers (23) are fixedly connected to the other end of the dust extraction pipe (21). A top cover (24) is provided at the top of the cyclone separator (1). An exhaust pipe (25) is fixedly connected through the center of the upper side of the top cover (24). Air inlets (26) are provided on both the front and rear sides of the upper part of the inner wall of the cyclone separator (1). A spiral channel (27) is fixedly connected to the upper part of the inner wall of the cyclone separator (1). The spiral channel (27) is fitted on the outer side of the exhaust pipe (25).

2. The decentralized dust removal device for concrete processing according to claim 1, characterized in that: The air inlet (26) is connected to the dust extraction pipe (21), the exhaust pipe (25) is located at the center of the spiral channel (27), and the dust extraction pipe (21) is connected to the cyclone separator (1) at an angle to the air inlet (26).

3. The decentralized dust removal device for concrete processing according to claim 1, characterized in that: The cyclone separator (1) is provided with an anti-back-mixing component (28), which includes a constricted pipe (281) located at the bottom of the exhaust pipe (25).

4. A decentralized dust removal device for concrete processing according to claim 3, characterized in that: The exhaust pipe (25) has a first limiting block (282) fixedly connected to both the left and right sides of its inner wall, and the constricted pipe (281) has a second limiting block (283) fixedly connected to both the left and right sides of its inner wall. The exhaust pipe (25) has a first internal thread (284) on its lower side, and the constricted pipe (281) has a first external thread ring (285) fixedly connected to its upper side. The first external thread ring (285) is threaded into the inside of the first internal thread (284), and a honeycomb frame (286) is inserted into the inside of the constricted pipe (281).

5. A decentralized dust collection device for concrete processing according to claim 4, characterized in that: The upper and lower sides of the honeycomb frame (286) are pressed and contacted with the opposite surfaces of the first limiting block (282) and the second limiting block (283), respectively. The exhaust pipe (25) is connected to the constricted pipe (281), and the spiral channel (27) is located outside the constricted pipe (281).

6. A decentralized dust removal device for concrete processing according to claim 5, characterized in that: The inner and outer sides of the constricted tube (281) are provided with a locking component (29), and the locking component (29) includes locking grooves (291) opened on the left and right sides of the honeycomb frame (286).

7. A decentralized dust removal device for concrete processing according to claim 6, characterized in that: The constricted tube (281) has movable grooves (292) on both the left and right sides of its outer surface. The movable grooves (292) have rotating grooves (293) on both the front and back sides. A rotating rod (294) is rotatably connected inside the rotating groove (293). A locking strip (295) is fixedly connected to one end of the opposite side of the rotating rod (294) on both the front and back sides. The locking strip (295) is rotatably connected inside the movable groove (292).

8. A decentralized dust removal device for concrete processing according to claim 7, characterized in that: Both the movable groove (292) and the locking bar (295) are bent. The locking bar (295) is inserted into the inside of the locking groove (291) on the upper horizontal part. A pressure spring (296) is fixedly connected between the side of the movable groove (292) near the locking groove (291) and the side of the vertical part of the locking bar (295) near the locking groove (291).

9. A decentralized dust removal device for concrete processing according to claim 8, characterized in that: The constricted tube (281) is provided with a secondary vortex component (3) on both the inner and outer sides. The secondary vortex component (3) includes a second internal thread (31) opened on the lower side of the constricted tube (281).

10. A decentralized dust removal device for concrete processing according to claim 9, characterized in that: The second internal thread (31) is internally threaded with a second external thread ring (32), and a fixed cylinder (33) is fixedly connected to the lower side of the second external thread ring (32). The fixed cylinder (33) is internally arranged in a ring array and fixedly connected with guide strips (34), which are spirally arranged.

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