Sand material and dust separation system

Abstract

The invention relates to the field of separation devices, in particular to a sand dust separation system which structurally comprises a filter cartridge, the filter cartridge comprises a first dust removal frame, a filter element and a second dust removal frame, the first dust removal frame and the second dust removal frame are nested on the two sides of the filter element respectively, and airflow is injected into the first dust removal frame and the second dust removal frame to push the filter element to move; the sand material dust separation system has the following effects that the cleaning efficiency is improved through bidirectional airflow backflushing, clamping type cleaning of a filter element is formed through bidirectional high-pressure airflow impact of the first dust removal frame (connected with a backflushing bin spray head) and the second dust removal frame, dust residues can be reduced compared with single-side backflushing, and the dust removal efficiency is improved. In the filter element horizontal movement vibration dust removal (the first support and the second support) back-flushing process, the ejector rod is ejected by the second dust removal frame to generate elastic deformation, the shaking rod is driven to vibrate at high frequency to beat the inner surface of the filter element, the dust falling efficiency is improved by combining the airflow effect, and meanwhile local excessive deformation of the filter plate is avoided.

Description

Technical Field

[0001] The present invention is a sand and dust separation system, belonging to the field of separation devices. Background Art

[0002] The sand and dust separation system is a key device used in industrial production to process the mixture of sand and dust and achieve efficient separation of the two.

[0003] In the field of sandblasting operations, the problems of dust pollution and sand recovery have long restricted production efficiency and environmental friendliness. Traditional sandblasting room systems usually adopt single-stage dust removal devices, such as bag filters or basic cartridge filters. The traditional single-sided high-pressure air flow backwashing device can only remove the dust on the surface of the cartridge, and it is difficult to peel off the deep accumulated dust. The conventional pulse backwashing technology makes the filter material expand and peel off the dust through instantaneous high pressure, but the repeated deformation accelerates the aging of the filter material. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a sand and dust separation system to solve the above problems.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions: A sand and dust separation system, the structure of which includes: a dust removal device, the dust removal device is connected with a fan and a sand recovery device through pipelines, a recovery tank is arranged at the bottom of the sand recovery device, the dust removal device is also connected with a sandblasting room through a pipeline, the dust removal device includes a cavity formed by a backwashing chamber and a dust filtering chamber, more than two filter cartridges are installed in the cavity, a filter hopper is arranged at the bottom of the backwashing chamber and the dust filtering chamber, the filter cartridge is connected with a pressure pump through a connecting pipe, and the pressure pump is also connected with a spray head inside the backwashing chamber; The filter cartridge includes a first dust removal frame, a filter element, and a second dust removal frame. The first dust removal frame and the second dust removal frame are respectively nested on both sides of the filter element, and the injection of air flow into the first dust removal frame and the second dust removal frame can push the filter element to move.

[0006] Preferably, the filter element includes filter plates, the filter plates form a cylinder, and a second support for support is installed inside. Axially arranged inner grooves are provided on the surface of the second support, and a first support is arranged inside the inner grooves.

[0007] Preferably, the first support includes a synchronous ring, multiple ejector rods are connected to the surface of the synchronous ring, a pull shaft is arranged in the middle of the ejector rod, one side of the pull shaft is welded to the surface of the ejector rod, the movable end is connected with a shaking rod, and the connection point is located in the middle of the shaking rod. The ejector rod is nested with the inner groove through a top head.

[0008] Preferably, the first dust removal rack includes a connecting rack and a clamping plate. The connecting rack and the clamping plate are respectively installed on both sides of the partition between the backwash bin and the dust filter bin. The surface of the clamping plate is also equipped with a telescopic sleeve formed by a telescopic groove and a ring. The ring is nested on the inner surface of the connecting rack, and an inner conduit is provided in the middle of the connecting rack.

[0009] Preferably, the second dust removal rack includes a ferrule. A top cavity is provided in the middle of the ferrule. A movable push shaft is arranged inside the top cavity. A limiting rack for cooperating with the filter element is arranged on one side of the push shaft, and the limiting rack is nested and cooperated with the filter element.

[0010] Preferably, the push shaft is connected to a slide plate inside the top cavity. Positioning springs are installed on both sides of the slide plate, and the slide plate is located in the middle of the cavity of the top cavity through the positioning springs.

[0011] Preferably, a plurality of through holes are provided on the surface of the slide plate. The through holes penetrate through the positioning springs and the push shaft to communicate the filter element with the outside.

[0012] Preferably, the top rod and the shaking rod are made of elastic rod bodies.

[0013] Preferably, the telescopic groove is made of telescopic rubber and is buckled with the inner groove of the ring. The inner wall of the ring is embedded in the inner wall of the telescopic groove and is sleeved with the groove provided on the clamping plate.

[0014] Preferably, the inner conduit has a double-segment diameter, and the diameter of the inlet is larger than that of the outlet.

[0015] A sand material dust separation system of the present invention has the following effects: The two-way air flow backwash improves the cleaning efficiency. Through the impact of the two-way high-pressure air flow of the first dust removal rack (connecting the backwash bin nozzle) and the second dust removal rack, a clamping type cleaning of the filter element is formed, and compared with the single-side backwash, the dust residue can be reduced.

[0016] During the backwash process of the horizontal movement and vibration dust removal of the filter element (the first bracket and the second bracket), the top rod generates elastic deformation under the top pressure of the second dust removal rack, driving the shaking rod to vibrate at a high frequency and beat the inner surface of the filter element. Combined with the air flow effect, the dust shedding efficiency is improved, and at the same time, local excessive deformation of the filter plate is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings: Figure 1 It is a schematic structural diagram of a sand material dust separation system of the present invention.

[0018] Figure 2 It is a schematic cross-sectional structural diagram of the dust removal device of the present invention.

[0019] Figure 3This is a schematic structural diagram of the first bracket of the present invention.

[0020] Figure 4 This is a schematic structural diagram of the first dust removal bracket of the present invention.

[0021] Figure 5 This is a schematic structural diagram of the filter cartridge of the present invention.

[0022] Figure 6 This is a schematic cross-sectional structural diagram of the second dust removal bracket of the present invention.

[0023] In the figure: 1. Dust removal device; 2. Fan; 3. Sand material recycler; 4. Recovery tank; 5. Sandblasting room; 11. Backwash bin; 12. Filter cartridge; 13. Pressure pump; 14. Dust filtration bin; 15. Filter hopper; 16. Connecting pipe; 121. First dust removal bracket; 122. Filter element; 123. Second dust removal bracket; 201. Synchronous ring; 202. Ejector rod; 203. Shaking rod; 204. Pulling shaft; 205. Ejecting head; 211. Connecting frame; 212. Clamping plate; 213. Telescopic groove; 214. Ring; 215. Inner conduit; 221. Filter plate; 222. First bracket; 223. Second bracket; 224. Inner groove; 231. Ferrule; 232. Top cavity; 233. Pushing shaft; 234. Limiting frame; 235. Slide plate; 236. Positioning spring. Detailed implementation manners

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0026] Existing traditional single-sided high-pressure air flow backwashing devices can only remove the dust on the surface layer of the filter cartridge, and it is difficult to peel off the deep accumulated dust. Conventional pulse backwashing technology makes the filter material expand and peel off the dust through instantaneous high pressure, but repeated deformation accelerates the aging of the filter material. Therefore, in order to solve the above problems, the following technical solutions are proposed in this case: Please refer to Figures 1 to 6 , the present invention provides a technical solution for a sand and dust separation system: its structure includes: a dust removal device 1, the dust removal device 1 is connected to a fan 2 and a sand material recovery device 3 through pipelines, a recovery tank 4 is arranged at the bottom of the sand material recovery device 3, the dust removal device 1 is also connected to a sandblasting room 5 through a pipeline, the dust removal device 1 includes a cavity formed by a backwashing chamber 11 and a dust filtering chamber 14, more than two filter cartridges 12 are installed in the cavity, a filter hopper 15 is arranged at the bottoms of the backwashing chamber 11 and the dust filtering chamber 14, the filter cartridge 12 is connected to a pressure pump 13 through a connecting pipe 16, and the pressure pump 13 is also connected to a spray head inside the backwashing chamber 11; The filter cartridge 12 includes a first dust removal frame 121, a filter element 122, and a second dust removal frame 123. The first dust removal frame 121 and the second dust removal frame 123 are respectively nested on both sides of the filter element 122, and the injection of air flow into the first dust removal frame 121 and the second dust removal frame 123 can push the filter element 122 to move.

[0027] The main structure of this system lies in the dust removal device 1 for the recovery of dust; the fan 2 for outputting the cleaned air flow inside the dust removal device 1; the sandblasting room 5, which serves as the working area for sandblasting, is connected to the dust removal device 1 through a pipeline to filter the air. At the same time, the sandblasting room 5 is also connected to the sand material recovery device 3 to recycle the sand material into the recovery tank 4 at the bottom of the sand material recovery device 3 for the sandblasting device inside the sandblasting room 5 to recycle.

[0028] The dust removal device 1 uses the filter cartridge 12 to filter dust, separating dust from air to improve the environmental protection effect. The filter cartridge 12 is installed inside the dust filtering chamber 14. The top of the dust filtering chamber 14 is connected to the sandblasting room 5 and the sand material recovery device 3 through pipelines. The air flow passes through the outer surface of the filter cartridge 12 and gradually settles inside the filter hopper 15 for recovery.

[0029] The dust filtering chamber 14 serves as a channel for the dust-containing gas and is connected to the backwashing chamber 11 on one side of the filter cartridge 12. The backwashing chamber 11 is the outlet for the clean air flow, and the backwashing chamber 11 is connected to the fan 2 to discharge the clean air flow.

[0030] Due to the clogging of the filter cartridge 12 caused by dust accumulation during long-term use, a pressure pump 13 is used to clean the filter cartridge 12. Specifically, the pressure pump 13 is a high-pressure air pump, which is connected to the filter cartridge 12 through a connecting pipe 16. When cleaning is required, the nozzle inside the backwashing chamber 11 is backwashed. As Figure 2 shown, the high-pressure air flow separates the dust from the filter cartridge 12, ensuring the cleaning efficiency of the filter cartridge 12.

[0031] The existing dust removal method usually uses high-pressure air flow to expand the filter element 122 of the filter cartridge 12 and blow out the dust. However, this method will cause the filter plate 221 of the filter element 122 to age and be easily damaged during frequent backwashing. Therefore, this device is improved. Specifically, the structure of the filter cartridge 12 includes a filter element 122. A first dust removal rack 121 and a second dust removal rack 123 are respectively arranged on both sides of the filter element 122. The first dust removal rack 121 faces the nozzle inside the backwashing chamber 11, and the second dust removal rack 123 is connected to the external connecting pipe 16. The filter element 122 is backwashed by bidirectional air flow, and the filter element 122 moves horizontally during the backwashing process, improving the dust removal efficiency of the filter element 122.

[0032] Specifically, the structure of the first dust removal rack 121 includes a connecting rack 211 and a clamping plate 212 installed on the surfaces of the backwashing chamber 11 and the dust filtering chamber 14. The clamping plate 212 clamps and seals the flange of the connecting rack 211. An inner conduit 215 is arranged in the middle of the connecting rack 211. When the high-pressure air flow passes through the inner conduit 215, the flow rate of the air flow will increase, thereby reducing the intensity of the input pressure and making the air flow utilization rate higher. A telescopic groove 213 extends on the surface of the clamping plate 212, and a ring 214 is arranged on the surface of the telescopic groove 213 for connection. The telescopic groove 213 is connected to the ring body installed on the side of the filter plate 221 of the filter element 122 through the ring 214, thereby forming a seal. A first bracket 222 is arranged inside the filter plate 221, and the first bracket 222 is installed inside the inner groove 224 of the second bracket 223. The first bracket 222 is linked with the second dust removal rack 123.

[0033] The structure of the first bracket 222 includes a synchronous ring 201. A plurality of ejector rods 202 are welded to the synchronous ring 201. The ejector rods 202 are connected to a shaking rod 203 through a pull shaft 204. The ejector rods 202 and the ejector rods 202 both adopt an elastic structure, such as an elastic metal strip. A top head 205 is arranged at the free end of the ejector rod 202 and nested with the inner groove of the second bracket 223. When the second dust removal rack 123 presses, the ejector rod 202 deforms. When the ejector rod 202 bends, the shaking rod 203 connected by the pull shaft 204 shakes, thereby being able to pat the inner surface of the filter element 122. During the patting process, since the shaking rod 203 adopts a long structure, the overall force can be made uniform during shaking, and the vibration frequency is increased by using a small air flow with a high frequency, and the shaking-off effect is better.

[0034] The structure of the second dust removal rack 123 includes a ferrule 231 which is installed on the side of the dust filter bin 14 and serves as the replacement channel for the filter element 122. The top cavity 232 is threadedly connected to the ferrule 231 and rotationally fixed to the ferrule 231. Rotational disassembly facilitates the disassembly and assembly of the filter element 122.

[0035] Inside the top cavity 232, a slide plate 235 driven by air flow is installed. Positioning springs 236 are arranged on both sides of the slide plate 235 for limiting. The slide plate 235 is connected to a push shaft 233, which cooperates with a limit frame 234. The limit frame 234 adopts a frame structure, and a groove is provided on the side opposite to the filter element 122. The groove cooperates with the synchronous ring 201 of the filter element 122. Moreover, a plurality of through holes are provided on the surface of the slide plate 235 to allow air flow to pass through. When the air flow reaches a certain thrust, the slide plate 235 can be moved. By turning the air flow on and off, the filter element 122 can be vibrated at a certain frequency, which is better controlled during cleaning.

[0036] Only the basic principles and preferred embodiments of the present invention are described above. Those skilled in the art can make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of the present invention.

[0037] Dual-direction air flow backwashing improves the cleaning efficiency. Through the dual-direction high-pressure air flow impact of the first dust removal rack 121 (connected to the nozzle of the backwashing bin 11) and the second dust removal rack 123, a sandwich-style cleaning of the filter element 122 is formed, which can reduce dust residue compared with single-side backwashing.

[0038] During the backwashing process of horizontal movement and vibration dust removal of the filter element (the first bracket 222, the second bracket 223), the ejector rod 202 undergoes elastic deformation under the top pressure of the second dust removal rack 123, driving the shaking rod 203 to vibrate at a high frequency and beat the inner surface of the filter element 122. Combining with the air flow effect, the efficiency of dust shedding is improved, and at the same time, local excessive deformation of the filter plate 221 is avoided.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sand dust separation system, the structure of which includes: Dust removal device (1), the dust removal device (1) is connected with a blower (2) and a sand material recovery device (3) through pipelines, a recovery tank (4) is arranged at the bottom of the sand material recovery device (3), and the dust removal device (1) is also connected with a sandblasting room (5) through a pipeline, and is characterized in that: The dust removal device (1) comprises a cavity formed by a backflush bin (11) and a dust filtering bin (14), more than two filter cartridges (12) are installed in the cavity, a filter hopper (15) is arranged at the bottoms of the backflush bin (11) and the dust filtering bin (14), the filter cartridges (12) are connected with a pressure pump (13) through a connecting pipe (16), and the pressure pump (13) is also connected with a spray head inside the backflush bin (11); The filter cartridge (12) comprises a first dust removal frame (121), a filter element (122) and a second dust removal frame (123), the first dust removal frame (121) and the second dust removal frame (123) are respectively nested on two sides of the filter element (122), and airflow injected into the first dust removal frame (121) and the second dust removal frame (123) can push the filter element (122) to move.

2. The sand and dust separation system according to claim 1, wherein: The filter element (122) comprises filter plates (221), the filter plates (221) form a cylinder, a second support (223) for support is installed inside, inner grooves (224) arranged axially are formed on the surface of the second support (223), and a first support (222) is arranged inside the inner grooves (224).

3. The sand and dust separation system according to claim 2, wherein: The first support (222) comprises a synchronous ring (201), a plurality of ejector rods (202) are connected to the surface of the synchronous ring (201), a pull shaft (204) is arranged in the middle of the ejector rod (202), one side of the pull shaft (204) is welded to the surface of the ejector rod (202), a shaking rod (203) is connected to the movable end, the connection point is located in the middle of the shaking rod (203), and the ejector rod (202) is nested with the inner groove (224) through an ejector head (205).

4. A sand dust separation system according to claim 1, characterized in that: The first dust removal frame (121) comprises a connecting frame (211) and a clamping plate (212), the connecting frame (211) and the clamping plate (212) are respectively installed on two sides of a partition plate of the backflush bin (11) and the dust filtering bin (14), a telescopic sleeve formed by a telescopic groove (213) and a ring (214) is further installed on the surface of the clamping plate (212), the ring (214) is nested on the inner surface of the connecting frame (211), and an inner conduit (215) is further arranged in the middle of the connecting frame (211).

5. The sand and dust separation system according to claim 1, wherein: The second dust removal frame (123) comprises a sleeve (231), a top cavity (232) is arranged in the middle of the sleeve (231), a movable push shaft (233) is arranged inside the top cavity (232), a limiting frame (234) matched with the filter element (122) is arranged on one side of the push shaft (233), and the limiting frame (234) is nested and matched with the filter element (122).

6. The abrasive dust separation system according to claim 5, characterized in that: The push shaft (233) is connected with a slide plate (235) inside the top cavity (232), positioning springs (236) are installed on two sides of the slide plate (235), and the slide plate (235) is located in the middle of the cavity of the top cavity (232) through the positioning springs (236).

7. The sand and dust separation system as claimed in claim 6, wherein: The surface of the skateboard (235) is provided with a plurality of through holes, and the through holes penetrate through the positioning spring (236) and the push shaft (233) to communicate the filter element (122) with the outside.

8. The sand and dust separation system according to claim 3, wherein: The ejector rod (202) and the vibrating rod (203) are made of elastic rod bodies.

9. The sand and dust separation system according to claim 4, wherein: The telescopic groove (213) is a cylindrical telescopic structure made of rubber and is buckled with the inner groove of the ring (214). The inner wall of the ring (214) is embedded in the inner wall of the telescopic groove (213) and is sleeved with the groove provided in the clamping plate (212).

10. A sand and dust separation system according to claim 4, characterized in that: The inner conduit (215) has a double-section diameter, and the diameter of the inlet is larger than that of the outlet.

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