A sand dust separation system

Abstract

The present invention relates to the field of separation devices, and in particular to a sand material dust separation system, whose structure includes: a filter cartridge including 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 airflow injected by the first dust removal frame and the second dust removal frame can push the filter element to move. The present invention provides a sand material dust separation system with the following effects: two-way airflow recoil improves cleaning efficiency, and the two-way high-pressure airflow impact of the first dust removal frame (connected to the recoil bin nozzle) and the second dust removal frame forms a clamping cleaning of the filter element, which can reduce dust residue compared with unilateral recoil. During the recoil process of the horizontal movement vibration dust removal (first bracket, second bracket) of the filter element, the top rod is elastically deformed by the top pressure of the second dust removal frame, which drives the shaking rod to vibrate and beat the inner surface of the filter element at high frequency, and the dust shedding efficiency is improved in combination with the airflow action, while avoiding local excessive deformation of the filter plate.

Description

Technical Field

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

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

[0003] In the field of sandblasting, dust pollution and sand recovery issues have long constrained production efficiency and environmental friendliness. Traditional sandblasting systems typically use single-stage dust removal devices, such as bag filters or basic cartridge filters. Traditional single-sided high-pressure airflow backflushing devices can only remove dust on the surface of the filter cartridge, but deep-seated dust is difficult to remove. Conventional pulse backflushing technology uses instantaneous high pressure to expand the filter media to remove dust, but repeated deformation accelerates filter media aging. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a sand dust separation system to solve the above problems.

[0005] To achieve the above-mentioned object, the present invention is implemented through the following technical solutions: a sand material dust separation system, the structure of which includes: a dust removal device, the dust removal device is connected to a fan and a sand material recovery device through a pipeline, the bottom of the sand material recovery device is provided with a recovery tank, the dust removal device is also connected to a sandblasting room through a pipeline, the dust removal device includes a cavity formed by a recoil bin and a dust filter bin, two or more filter cartridges are installed in the cavity, the bottom of the recoil bin and the dust filter bin are provided with filter buckets, the filter cartridges are connected to a pressure pump through a connecting pipe, and the pressure pump is also connected to a nozzle inside the recoil bin;

[0006] 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 airflow injected into the first dust removal frame and the second dust removal frame can push the filter element to move.

[0007] Preferably, the filter element includes a filter plate, the filter plate forms a cylindrical body, and a second bracket for support is installed inside. The surface of the second bracket is provided with an inner groove arranged along the axial direction, and the first bracket is provided inside the inner groove.

[0008] Preferably, the first bracket includes a synchronization ring, a plurality of push rods are connected to the surface of the synchronization ring, a pull shaft is provided in the middle of the push rod, one side of the pull shaft is welded to the surface of the push rod, and a shaking rod is connected to the movable end, and the connection point is located in the middle of the shaking rod, and the push rods are nested with each other in the inner groove through the top.

[0009] Preferably, the first dust removal frame includes a connecting frame and a splint, which are respectively installed on both sides of the partition of the recoil bin and the dust filter bin. The surface of the splint is also installed with a telescopic sleeve formed by a telescopic groove and a ring. The ring is nested in the inner surface of the connecting frame, and an inner duct is also provided in the middle of the connecting frame.

[0010] Preferably, the second dust removal frame includes a ring, a top cavity is provided in the middle of the ring, a movable push shaft is provided inside the top cavity, a limit frame cooperating with the filter element is provided on one side of the push shaft, and the limit frame is nested with the filter element.

[0011] Preferably, the push shaft is connected to the slide plate inside the top cavity, and positioning springs are installed on both sides of the slide plate, so that the slide plate is located in the middle of the cavity of the top cavity through the positioning springs.

[0012] Preferably, a plurality of through holes are provided on the surface of the slide plate, and the through holes penetrate the positioning spring and the push shaft to connect the filter element with the outside.

[0013] Preferably, the push rod and the shaking rod are elastic rods.

[0014] 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 fitted with the groove body provided on the splint.

[0015] Preferably, the inner conduit is provided with a double diameter section, and the diameter of the inlet is larger than the diameter of the outlet.

[0016] The present invention provides a sand material dust separation system, which has the following effects: bidirectional airflow recoil improves cleaning efficiency, and the bidirectional high-pressure airflow impact of the first dust removal frame (connected to the recoil bin nozzle) and the second dust removal frame forms a clamping cleaning of the filter element, which can reduce dust residue compared with unilateral recoil.

[0017] During the recoil process of the horizontal movement vibration dust removal of the filter element (first bracket, second bracket), the top rod is elastically deformed by the top pressure of the second dust removal frame, driving the shaking rod to vibrate at high frequency and beat the inner surface of the filter element. Combined with the effect of airflow, the dust shedding efficiency is improved while avoiding local excessive deformation of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 This is a structural schematic diagram of a sand material dust separation system of the present invention.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the dust removal device of the present invention.

[0021] Figure 3 Schematic diagram of the structure of the first bracket of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the first dust removal frame of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the filter cartridge of the present invention.

[0024] Figure 6 It is a schematic cross-sectional structural diagram of the second dust removal frame of the present invention.

[0025] In the picture:

[0026] 1. Dust removal device; 2. Fan; 3. Sand recovery device; 4. Recovery tank; 5. Sand blasting room;

[0027] 11. Backflush chamber; 12. Filter cartridge; 13. Pressure pump; 14. Dust filter chamber; 15. Filter hopper; 16. Connecting pipe;

[0028] 121, first dust removal rack; 122, filter element; 123, second dust removal rack;

[0029] 201, synchronization ring; 202, ejector rod; 203, shaking rod; 204, pull shaft; 205, ejector head;

[0030] 211, connecting frame; 212, splint; 213, telescopic slot; 214, ring; 215, inner conduit;

[0031] 221, filter plate; 222, first bracket; 223, second bracket; 224, inner tank;

[0032] 231. Ring; 232. Top cavity; 233. Push shaft; 234. Limit frame; 235. Slide plate; 236. Positioning spring. DETAILED DESCRIPTION

[0033] In order 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection 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 invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0035] The existing traditional single-sided high-pressure airflow backflushing device can only remove dust on the surface of the filter cartridge, and deep-layer dust is difficult to remove. Conventional pulse backflushing technology uses instantaneous high pressure to expand the filter material to remove dust, but repeated deformation accelerates the aging of the filter material. Therefore, in order to solve the above problems, this case proposes the following technical solutions:

[0036] See also Figures 1 to 6 The present invention provides a technical solution for a sand material 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 a pipeline, a recovery tank 4 is provided 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 recoil bin 11 and a dust filter bin 14, two or more filter cartridges 12 are installed in the cavity, filter buckets 15 are provided at the bottom of the recoil bin 11 and the dust filter bin 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 nozzle inside the recoil bin 11;

[0037] The filter cartridge 12 includes a first dust collecting frame 121 , a filter element 122 and a second dust collecting frame 123 . The first dust collecting frame 121 and the second dust collecting frame 123 are respectively nested on both sides of the filter element 122 , and the airflow injected into the first dust collecting frame 121 and the second dust collecting frame 123 can push the filter element 122 to move.

[0038] The main structure of this system is a dust removal device 1 for recovering dust; a fan 2 for outputting the cleaned airflow inside the dust removal device 1; a sandblasting room 5, which serves as the sandblasting work area and 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, which recovers the sand into the recovery tank 4 at the bottom of the sand material recovery device 3 for recycling use by the sandblasting device inside the sandblasting room 5.

[0039] The dust removal device 1 uses a filter cartridge 12 to filter dust, separate dust from air and improve environmental protection effects. The filter cartridge 12 is installed inside the dust filter bin 14. The top of the dust filter bin 14 is connected to the sandblasting room 5 and the sand material recovery device 3 by pipes. The airflow passes through the outer surface of the filter cartridge 12 and gradually settles inside the filter bucket 15 for recovery.

[0040] The dust filter bin 14 serves as a passage for dusty gas and is connected to the recoil bin 11 on one side of the filter cartridge 12. The recoil bin 11 is a clean airflow outlet and is connected to the fan 2 to discharge the clean airflow.

[0041] Since the filter cartridge 12 may be clogged due to dust accumulation after long-term use, a pressure pump 13 is used to clean the filter cartridge 12. The specific pressure pump 13 is a high-pressure air pump connected to the filter cartridge 12 through a connecting pipe 16. When cleaning is required, the nozzle inside the recoil chamber 11 is used. Figure 2 As shown, the high-pressure airflow separates the dust from the filter cartridge 12, so that the cleaning efficiency of the filter cartridge 12 can be guaranteed.

[0042] The existing dust removal method usually uses high-pressure airflow to expand the filter element 122 of the filter cartridge 12 to 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 backflushing. The present device has improved this. The specific structure of the filter cartridge 12 includes a filter element 122, and a first dust removal rack 121 and a second dust removal rack 123 are respectively provided on both sides of the filter element 122. The first dust removal rack 121 is opposite to the nozzle inside the backflushing bin 11, and the second dust removal rack 123 is connected to the external connecting pipe 16. The filter element 122 is backflushed by a two-way airflow, and the filter element 122 moves horizontally during the backflushing process, thereby improving the dust removal efficiency of the filter element 122.

[0043] The specific structure of the first dust removal frame 121 includes a connecting frame 211 and a clamping plate 212 installed on the surfaces of the recoil bin 11 and the dust filter bin 14. The clamping plate 212 and the flange of the connecting frame 211 are clamped and sealed. An inner duct 215 is provided in the middle of the connecting frame 211. When the high-pressure airflow passes through the inner duct 215, the flow rate of the airflow will be increased, thereby reducing the intensity of the input pressure and improving the airflow utilization rate. A telescopic groove 213 is extended on the surface of the clamping plate 212, and a ring 214 is provided 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 provided 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 to the second dust removal frame 123.

[0044] The structure of the first bracket 222 includes a synchronization ring 201, and the synchronization ring 201 is welded with multiple push rods 202. The push rods 202 are connected to the shaking rod 203 through the pull shaft 204. The push rods 202 and the push rods 202 both adopt elastic structures, such as elastic metal strips. A top head 205 is set at the free end of the push rod 202 and nested with the inner groove of the second bracket 223. The second dust removal frame 123 presses the push rod 202 to deform. When the push rod 202 bends, the shaking rod 203 connected to the pull shaft 204 vibrates, and then the inner surface of the filter element 122 can be slapped. During the slapping process, since the shaking rod 203 adopts a long structure, the overall force can be evenly distributed during shaking, and the vibration frequency is increased by using a small airflow and high frequency method, and the shaking-off effect is better.

[0045] The structure of the second dust removal frame 123 includes a ring 231, which is installed on the side of the dust filter bin 14 and serves as a replacement channel for the filter element 122. The top cavity 232 and the ring 231 are threadedly connected. The top cavity 232 and the ring 231 are rotationally fixed. Rotary disassembly can facilitate the disassembly and assembly of the filter element 122.

[0046] A slide 235 pushed by the airflow is installed inside the top cavity 232. Positioning springs 236 are set on both sides of the slide 235 for limiting. The slide 235 is connected to the push shaft 233, and cooperates with the limit frame 234 through the push shaft 233. The limit frame 234 adopts a frame structure and is provided with a groove on the side opposite to the filter element 122. The groove cooperates with the synchronization ring 201 of the filter element 122, and a plurality of through holes are provided on the surface of the slide 235 to allow airflow to pass through. When the airflow reaches a certain thrust, the slide 235 can be moved. By turning on and off the airflow, the filter element 122 can be shaken at a certain frequency, which can be better controlled during cleaning.

[0047] The above only describes the basic principles and preferred embodiments of the present invention. Those skilled in the art may make many changes and improvements based on the above description, and these changes and improvements should fall within the scope of protection of the present invention.

[0048] Bidirectional airflow recoil improves cleaning efficiency. The bidirectional high-pressure airflow impact of the first dust removal rack 121 (connected to the recoil bin 11 nozzle) and the second dust removal rack 123 forms a clamping cleaning of the filter element 122, which can reduce dust residue compared to unilateral recoil.

[0049] During the recoil process of the filter element's horizontal movement and vibration dust removal (first bracket 222, second bracket 223), the push rod 202 is elastically deformed by the pressure of the second dust removal bracket 123, driving the shaking rod 203 to vibrate at high frequency and beat the inner surface of the filter element 122. Combined with the action of airflow, the dust shedding efficiency is improved, while avoiding local excessive deformation of the filter plate 221.

[0050] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sand material dust separation system, the structure of which includes: A dust removal device (1) is connected to a fan (2) and a sand material recovery device (3) via a pipeline, a recovery trough (4) is provided at the bottom of the sand material recovery device (3), and the dust removal device (1) is further connected to a sand blasting room (5) via a pipeline, characterized in that: The dust removal device (1) comprises a cavity formed by a recoil bin (11) and a dust filter bin (14), wherein two or more filter cartridges (12) are installed in the cavity, filter buckets (15) are provided at the bottom of the recoil bin (11) and the dust filter bin (14), the filter cartridges (12) are connected to a pressure pump (13) via a connecting pipe (16), and the pressure pump (13) is also connected to a nozzle inside the recoil bin (11); The filter cartridge (12) comprises a first dust removal frame (121), a filter element (122), and a second dust removal frame (123), wherein 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 airflow injected into the first dust removal frame (121) and the second dust removal frame (123) can push the filter element (122) to move; The filter element (122) comprises a filter plate (221), the filter plate (221) forms a cylindrical body, a second bracket (223) for support is installed inside, the surface of the second bracket (223) is provided with an inner groove (224) arranged along the axial direction, and the first bracket (222) is provided inside the inner groove (224); The first bracket (222) includes a synchronization ring (201), and a plurality of push rods (202) are connected to the surface of the synchronization ring (201). A pull shaft (204) is provided in the middle of the push rod (202). One side of the pull shaft (204) is welded to the surface of the push rod (202), and 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 push rod (202) is nested with the inner groove (224) through the top head (205).

2. The 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), wherein the connecting frame (211) and the clamping plate (212) are respectively mounted on both sides of a partition of the recoil bin (11) and the dust filter bin (14), and a telescopic sleeve formed by a telescopic groove (213) and a ring (214) is further mounted on the surface of the clamping plate (212), wherein the ring (214) is nested in the inner surface of the connecting frame (211), and an inner conduit (215) is further provided in the middle of the connecting frame (211).

3. The sand dust separation system according to claim 1, characterized in that: The second dust removal frame (123) comprises a ferrule (231), a top cavity (232) is provided in the middle of the ferrule (231), a movable push shaft (233) is provided inside the top cavity (232), and a limiting frame (234) that cooperates with the filter element (122) is provided on one side of the push shaft (233), and the limiting frame (234) and the filter element (122) are nested and cooperated.

4. The sand dust separation system according to claim 3, characterized in that: The push shaft (233) is connected to the slide plate (235) inside the top cavity (232). Positioning springs (236) are installed on both sides of the slide plate (235). The slide plate (235) is located in the middle of the cavity of the top cavity (232) through the positioning springs (236).

5. The sand dust separation system according to claim 4, characterized in that: The surface of the slide plate (235) is provided with a plurality of through holes, which penetrate the positioning spring (236) and the push shaft (233) to connect the filter element (122) with the outside.

6. The sand dust separation system according to claim 1, characterized in that: The push rod (202) and the shaking rod (203) are elastic rods.

7. The sand dust separation system according to claim 2, characterized in that: The telescopic groove (213) is a cylindrical telescopic structure made of rubber material and is engaged 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 fitted with the groove body provided on the splint (212).

8. The sand material dust separation system according to claim 2, characterized in that: The inner conduit (215) is provided with a double diameter, with the diameter of the inlet being larger than the diameter of the outlet.

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