Pulse dust removal device for quartz sand grinding

Abstract

The invention provides a pulse dust removal device for quartz sand grinding, and belongs to the technical field of quartz sand grinding dust removal equipment.The pulse dust removal device comprises a box body, a filtering unit and a pulse unit, the filtering unit comprises a filtering cylinder, and the outer side of the filtering cylinder is sleeved with a double-layer sleeve with openings in the two ends; the double-layer sleeve is provided with a plurality of air inlet channels capable of being opened and closed in the length direction, and a top opening of the double-layer sleeve is provided with a cover plate capable of being opened and closed. During filtering, the cover plate corresponding to the filter cartridge needing dust removal is closed, the filter cartridge in the double-layer sleeve is not affected by the induced draft fan, then the pulse air injection end, corresponding to the pulse unit, on the pulse unit is opened, compressed air is injected to the filter cartridge through the injection pipe, dust removal is conducted on the filter cartridge, and during dust removal, dust removal is conducted on the filter cartridge through the injection pipe. The filter cartridges which do not participate in dust removal can filter dust normally, the multiple filter units are controlled to remove dust one by one by using the control logic preset by the controller, the equipment does not need to be shut down while offline dust removal of the filter cartridges is realized, and the dust removal effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of quartz sand grinding and dust removal equipment, and specifically refers to a pulse dust removal device for quartz sand grinding. Background Art

[0002] The main purpose of quartz sand grinding is to refine the quartz sand particles to improve their purity and fineness to meet the application requirements of different fields. The quartz sand grinding process will produce dust, which will not only pollute the production environment, but also pose a threat to the health of operators. Therefore, it is very important to take effective dust removal measures. Through specific dust removal equipment, such as pulse dust collector, cyclone dust collector, etc., the dust particles generated during the grinding process can be captured and removed.

[0003] Pulse dust collector has high dust removal efficiency and is easy to maintain. Therefore, it is widely used in the field of quartz sand grinding and dust removal. The pulse dust collector uses a filter cartridge to filter the medium in the gas. The medium is attached to the outer wall of the filter cartridge. Then, compressed air is sprayed into the inside of the filter cartridge to make the filter cartridge expand and vibrate to remove the dust attached to the filter cartridge.

[0004] At present, when a pulse dust collector removes the medium on the filter cartridge, there are two methods, namely, shutdown cleaning and non-stop cleaning. For shutdown cleaning, the induced draft fan is turned off to stop air intake and exhaust inside the box, and then compressed air is blown into the filter cartridge for cleaning. Shutdown cleaning is more thorough, but repeated start and stop of the equipment will increase the risk of equipment damage, and shutdown will interrupt the dust removal of the grinding equipment, causing dust overflow. For non-stop cleaning, compressed air is blown into the filter cartridge for cleaning under normal air intake and exhaust conditions, but the blown compressed air is affected by the reverse airflow of the induced draft fan, resulting in large losses, incomplete cleaning of the filter cartridge, and the detached dust is easily re-adsorbed on the filter cartridge and adjacent filter cartridges under the action of the induced draft fan airflow, resulting in poor cleaning effect. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a pulse dust removal device for quartz sand grinding, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a pulse dust removal device for quartz sand grinding, comprising a box body and a partition, the partition being fixed inside the box body so that the inner cavity of the box body is divided by the partition body to form an upper cavity and a lower cavity, the box body is provided with an air inlet pipe and an air exhaust pipe, the air inlet pipe is connected to the lower cavity, and the air exhaust pipe is connected to the upper cavity; The partition is provided with a plurality of mounting holes arranged in an array, and each of the mounting holes is provided with a filter unit for filtering; A pulse unit, wherein the pulse unit is provided with a plurality of pulse jet ends, respectively connected to the plurality of filter units, and used for delivering compressed air into the filter units; The filter unit comprises a filter cartridge, the opening end of the filter cartridge faces the upper cavity, the outer side of the filter cartridge is sleeved with a double-layer sleeve with openings at both ends, the double-layer sleeve is provided with a plurality of air inlet channels that can be opened and closed along the length direction, and the top opening of the double-layer sleeve is provided with a cover plate that can be opened and closed; A blow pipe is arranged on the cover plate and passes through the cover plate, and a pulse jet end of the pulse unit is connected to the blow pipe.

[0007] Furthermore, the double-layer casing includes an inner tube and an outer tube, the inner tube is sleeved on the outside of the filter cartridge and connected to the partition, and the outer tube is sleeved on the outside of the inner tube; The inner tube is provided with a plurality of first air inlets along the length direction, the outer tube is provided with a plurality of second air inlets along the length direction, the air inlet channel is composed of the first air inlets and the second air inlets, and the outer tube is configured to be able to slide along the length direction of the inner tube so that the first air inlets and the second air inlets overlap or stagger; When the first air inlet and the second air inlet overlap, the air inlet channel is opened, and when the first air inlet and the second air inlet are completely staggered, the air inlet channel is closed.

[0008] Furthermore, the cover plate is configured to be able to slide synchronously with the outer tube. When the outer tube slides to the point where the first air inlet and the second air inlet overlap, the cover plate synchronously slides to an open state. When the outer tube slides to the point where the first air inlet and the second air inlet are completely intertwined, the cover plate synchronously slides to a closed state.

[0009] Furthermore, the filter unit also includes a lifting rod, which is slidably inserted on the partition plate, and the outer tube and the cover plate are both connected to the lifting rod, so that the outer tube and the cover plate can slide synchronously.

[0010] Furthermore, a cylinder is provided at one end of the lifting rod for driving the lifting rod to slide.

[0011] Furthermore, the filter unit also includes a bracket arranged inside the filter cartridge, which is used to support the filter cartridge from the inner side.

[0012] Furthermore, the inner wall of the inner tube is provided with a plurality of evenly distributed support rods, and a gap is provided between the support rods and the filter cartridge for expansion of the filter cartridge, and the gap is smaller than the expansion amplitude of the filter cartridge.

[0013] Furthermore, the pulse unit includes an air storage tank and an air supply pipe, the air supply pipe is connected to the air storage tank, the pulse jet end includes a connecting hose and an electromagnetic pulse valve, one end of the connecting hose is connected to the air supply pipe, the other end of the connecting hose is connected to the blowing pipe, and the electromagnetic pulse valve is connected to the connecting hose.

[0014] Furthermore, a ash hopper for aggregate is provided at the bottom of the box.

[0015] Furthermore, a guide plate for guiding airflow is provided on the inner side of the box body near the air inlet pipe.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. During filtering, close the cover corresponding to the filter cartridge that needs to be cleaned, so that the filter cartridge inside the double-layer casing is not affected by the induced draft fan (offline). Then, open the corresponding pulse jet end on the pulse unit, and use the spray pipe to spray compressed air to the filter cartridge to clean the filter cartridge. During cleaning, the equipment does not need to be shut down, and the filter cartridge that is not involved in the cleaning can filter dust normally. The control logic preset by the controller is used to control multiple filter units to be cleaned one by one. While realizing offline cleaning of the filter cartridge, the equipment does not need to be shut down, thereby improving the cleaning effect.

[0017] 2. When the cover is closed, the air inlet channel on the double-layer casing is also closed at the same time. At this time, the filter cartridge is closed around the periphery. When the compressed air is sprayed to expand the filter cartridge and vibrate to clean the dust, the detached dust is concentrated in the double-layer casing and falls into the ash hopper along the double-layer casing to prevent the detached dust from being adsorbed by the adjacent filter cartridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Figure 3 A schematic diagram of the position distribution of a filter unit in a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Figure 4 A schematic diagram of an air inlet channel and a cover plate in an open state in a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Figure 5 A schematic diagram of a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention, in which an air inlet channel and a cover plate are in a closed state; Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle; Figure 7 A cross-sectional view of an inner tube and an outer tube in a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Figure 8 A schematic diagram of the position of a bracket installed inside a filter cartridge in a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a bracket in a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention; Fig.10 The present invention is a schematic diagram of the positional relationship between a filter cartridge and a support rod in a pulse dust removal device for quartz sand grinding proposed in an embodiment of the present invention.

[0019] Among them, 1. box body; 101. upper cavity; 102. lower cavity; 11. partition; 111. mounting hole; 12. air inlet pipe; 13. exhaust pipe; 14. ash hopper; 15. guide plate; 2. filter unit; 201. air inlet channel; 21. filter cartridge; 22. inner tube; 221. first air inlet; 23. outer tube; 231. second air inlet; 24. lifting rod; 25. cover plate; 26. cylinder; 27. bracket; 28. support rod; 3. pulse unit; 31. gas tank; 32. air supply pipe; 33. connecting hose; 34. electromagnetic pulse valve; 4. blowing pipe.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] 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 only part of the embodiments of the present invention, rather than all 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.

[0022] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] like Figure 1 , Figure 2 and Figure 3As shown, the present invention proposes a pulse dust removal device for quartz sand grinding, including a box body 1, an air inlet pipe 12, an air exhaust pipe 13, a filter unit 2 and a pulse unit 3.

[0024] The partition 11 is fixed to the inside of the box body 1, dividing the cavity inside the box body 1 into an upper cavity 101 and a lower cavity 102. The air inlet pipe 12 is connected to the lower cavity 102, and the exhaust pipe 13 is connected to the upper cavity 101, and the exhaust pipe 13 is externally connected to an induced draft fan. A plurality of mounting holes 111 are arranged in an array on the partition 11, and filter units 2 for filtering are installed in the mounting holes 111. The dust-containing gas enters the lower cavity 102 through the air inlet pipe 12. Under the action of the induced draft fan, the dust-containing gas enters the upper cavity 101 after being filtered by the filter unit 2, and is discharged by the exhaust pipe 13, and the dust in the gas adheres to the filter unit 2.

[0025] Furthermore, a guide plate 15 for guiding the airflow is provided on the inner side of the box body 1 near the air inlet pipe 12. The dust-containing gas input through the air inlet pipe 12 can be evenly distributed under the action of the guide plate 15. By balancing the airflow, large particles of dust in the flue gas can be more effectively slowed down by collision and then settled at the bottom of the ash hopper, which helps to reduce the filtering load of the filter bag and improve the dust removal efficiency.

[0026] The pulse unit 3 is provided with a plurality of pulse jet ends, which are respectively connected to a plurality of filter units 2 one by one. The pulse unit 3 delivers compressed air to the filter unit 2 through the pulse jet ends, so that the dust attached to the filter unit 2 falls off and the filtering efficiency of the filter unit 2 is restored.

[0027] An ash hopper 14 for collecting materials is provided at the bottom of the box body 1. The fallen dust falls into the ash hopper 14 and is collected and then discharged uniformly.

[0028] Combination Figure 4 and Figure 5 As shown, the filter unit 2 includes a filter cartridge 21, which is a cylindrical structure with an opening at one end. The open end of the filter cartridge 21 is connected to the mounting hole 111, and the open end of the filter cartridge 21 faces the upper cavity 101, so that the filter cartridge 21 is connected to the upper cavity 101. Therefore, when filtering dust, the induced draft fan connected to the exhaust pipe 13 extracts air in the box body 1. Since the exhaust pipe 13 is connected to the upper cavity 101, the dust-containing gas inside the lower cavity 102 needs to pass through the filter cartridge 21 and enter the upper cavity 101 from the open end of the filter cartridge 21, and then be discharged through the exhaust pipe 13. When the dust-containing gas passes through the filter cartridge 21, the dust is blocked and attached to the outside of the filter cartridge 21, thereby filtering the dust-containing gas; Combination Figure 8 and Fig. 9As shown, the filter unit 2 also includes a bracket 27 disposed inside the filter cartridge 21 for supporting the filter cartridge 21 from the inside to prevent the inner wall of the filter cartridge 21 from deforming and fitting due to negative pressure suction, thereby maintaining the shape of the filter cartridge 21.

[0029] Furthermore, the outer side of the filter cartridge 21 is provided with a double-layer sleeve with openings at both ends, and the double-layer sleeve is provided with a plurality of air inlet channels 201 that can be opened and closed along the length direction, and the top opening of the double-layer sleeve is provided with a cover plate 25 that can be opened and closed, and the cover plate 25 is provided with a blowing pipe 4 connected to the pulse jet end of the pulse unit 3, and the blowing pipe 4 passes through the cover plate 25.

[0030] When the air inlet channel 201 and the cover plate 25 are both in an open state, the dust-laden gas inside the lower cavity 102 can enter the filter cartridge 21 through the air inlet channel 201, and after being filtered by the filter cartridge 21, it is discharged from the top opening of the filter cartridge 21; When the cover plate 25 is in a closed state, the top of the double-layer casing is sealed. At this time, the filter cartridge 21 inside the double-layer casing is not affected by the induced draft fan (offline), that is, the dust-containing gas no longer passes through the filter cartridge 21 for filtering.

[0031] In this way, during filtering, the cover plate 25 corresponding to the filter cartridge 21 that needs to be cleaned is closed, and the top of the double-layer casing is sealed, so that the filter cartridge 21 inside the double-layer casing is not affected by the induced draft fan (offline). Then, the pulse jet end corresponding to the pulse unit 3 is opened, and the blowpipe 4 is used to blow compressed air to the filter cartridge 21 to clean the filter cartridge 21. During cleaning, the equipment does not need to be shut down, and the filter cartridge 21 that is not involved in the cleaning can filter dust normally. The control logic preset by the controller is used to control multiple filter units 2 to be cleaned one by one. While realizing the offline cleaning of the filter cartridge 21, the equipment does not need to be shut down, thereby improving the cleaning effect.

[0032] Furthermore, when the cover plate 25 is closed, the air inlet channel 201 on the double-layer sleeve is also closed at the same time. At this time, the filter cartridge 21 is closed around one side. When the compressed air is sprayed to expand the filter cartridge 21 and vibrate to clean the dust, the detached dust is concentrated in the double-layer sleeve and falls along the double-layer sleeve into the ash hopper 14, thereby preventing the detached dust from being adsorbed by the adjacent filter cartridge 21.

[0033] Combination Figure 5 and Figure 6 As shown, the double-layer casing includes an inner tube 22 and an outer tube 23. The inner tube 22 is sleeved on the outside of the filter cartridge 21 and connected to the partition 11. The inner diameter of the inner tube 22 is larger than the outer diameter of the filter cartridge 21, so that there is a gap between the inner tube 22 and the filter cartridge 21 for dust-containing gas to flow; The outer tube 23 is sleeved on the outer side of the inner tube 22. The inner tube 22 is provided with a plurality of first air inlets 221 along the length direction. The outer tube 23 is provided with a plurality of second air inlets 231 along the length direction. The air inlet channel 201 is composed of the first air inlets 221 and the second air inlets 231. The outer tube 23 is configured to be able to slide along the length direction of the inner tube 22, so that the first air inlets 221 and the second air inlets 231 overlap or stagger. When the first air inlet 221 and the second air inlet 231 overlap, the air inlet channel 201 is in an open state, and the dust-containing gas can enter the inner tube 22 through the air inlet channel 201 and be filtered by the filter cartridge 21. When the first air inlet 221 and the second air inlet 231 are completely staggered, the outer tube 23 shields the first air inlet 221, thereby closing the air inlet channel 201. At this time, the side wall of the inner tube 22 is in a closed state. When pulse air is blown into the filter cartridge 21 for cleaning, the dust that falls off due to the vibration of the filter cartridge 21 falls downward along the inner tube 22 and falls into the ash hopper 14 from the bottom opening of the inner tube 22, thereby preventing the fallen dust from being adsorbed by the adjacent filter cartridge 21.

[0034] Combination Fig.10 As shown, the inner wall of the inner tube 22 is provided with a plurality of evenly distributed support rods 28, and a gap is provided between the support rods 28 and the outer wall of the filter cartridge 21 for the expansion of the filter cartridge 21. At the same time, according to the maximum expansion amplitude allowed by the filter cartridge 21, the length of the support rods 28 is set so that the gap between the support rods 28 and the filter cartridge 21 is smaller than the maximum expansion amplitude allowed by the filter cartridge 21. When pulse jet is injected into the filter cartridge 21 to expand the filter cartridge 21, the support rods 28 support and limit the filter cartridge 21 to prevent the filter cartridge 21 from excessive expansion causing damage to the fibers or even surface holes.

[0035] Since the support rod 28 supports the filter cartridge 21 from the outside, it can also prevent the filter cartridge 21 from fitting against the inner tube 22 when it expands, so that a gap is formed between the filter cartridge 21 and the inner tube 22 for airflow and dust to pass through. The airflow inside the filter cartridge 21 can flow outward, blowing the dust adsorbed on the outside of the filter cartridge 21 in the opposite direction, and the dust adsorbed on the outside of the filter cartridge 21 can fall downward along the gap.

[0036] Combination Figure 4 and Figure 5 As shown, the cover plate 25 is configured to be able to slide synchronously with the outer tube 23. When the outer tube 23 slides to the point where the first air inlet 221 and the second air inlet 231 overlap, the cover plate 25 can synchronously slide upward to an open state. When the outer tube 23 slides to the point where the first air inlet 221 and the second air inlet 231 are completely intertwined, the cover plate 25 can synchronously slide downward to close the top opening of the double-layer sleeve.

[0037] In a specific embodiment, the filter unit 2 further includes a lifting rod 24, which is slidably plugged into the partition 11, and the outer tube 23 and the cover plate 25 are both connected to the lifting rod 24, so that the outer tube 23 and the cover plate 25 can slide up and down synchronously, according to the sliding distance required for switching the open and closed states of the air inlet channel 201, therefore, the outer tube 23 needs to slide downward synchronously with the cover plate 25, so that the first air inlet 221 and the second air inlet 231 are completely staggered, thereby closing the air inlet channel 201; The installation height of the cover plate 25 is set. When the outer tube 23 slides downward until the first air inlet 221 and the second air inlet 231 are completely staggered to close the air inlet channel 201, the cover plate 25 can also close the top opening of the double-layer sleeve at the same time.

[0038] Furthermore, a cylinder 26 is provided at one end of the lifting rod 24, and the cylinder 26 is fixed to the top outer side of the box body 1. The telescopic end of the cylinder 26 extends into the box body 1 and is connected to the lifting rod 24 to drive the lifting rod 24 to slide up and down.

[0039] The cylinder 26 is connected to an external air supply device through an air pipe, and each cylinder 26 is provided with an independent control valve. The control valve of the cylinder 26 is electrically connected to the controller, and the movement of each cylinder 26 can be automatically controlled by the controller.

[0040] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the pulse unit 3 includes an air tank 31 and an air supply pipe 32, the air supply pipe 32 is connected to the air tank 31, the air tank 31 is externally connected to an air supply device, the air supply device supplies air to the air tank 31, so that the air tank 31 always stores sufficient compressed air, the pulse jet end includes a connecting hose 33 and an electromagnetic pulse valve 34, one end of the connecting hose 33 is connected to the air supply pipe 32, the other end of the connecting hose 33 is connected to the blowing pipe 4, the electromagnetic pulse valve 34 is connected to the connecting hose 33, and the connecting hose 33 is connected to the air tank 31 through the air supply pipe 32; When the electromagnetic pulse valve 34 is opened, the air tank 31 delivers compressed air to the filter cartridge 21 through the air supply pipe 32, the connecting hose 33 and the blowing pipe 4 in sequence. When the air pressure in the air tank 31 is insufficient, the external air supply equipment replenishes air into the air tank 31 to restore the air pressure in the air tank 31.

[0041] Furthermore, the length of the connecting hose 33 is sufficiently redundant, and since the connecting hose 33 is soft, when the cover plate 25 moves up and down, the connecting hose 33 can also maintain a stable connection with the blowing pipe 4.

[0042] Working principle of the present invention: During filtering, the air inlet channel 201 and the cover plate 25 on the double-layer casing are both in an open state, and the dust-containing gas enters the lower cavity 102 through the air inlet pipe 12. Under the action of the induced draft fan, the dust-containing gas enters the interior of the inner tube 22 through the air inlet channel 201, passes through the filter cartridge 21, and then enters the upper cavity 101 from the open end of the filter cartridge 21, and is finally discharged through the exhaust pipe 13. When the dust-containing gas passes through the filter cartridge 21, the dust is blocked and attached to the outside of the filter cartridge 21, thereby filtering the dust-containing gas; When it is necessary to clean the designated filter cartridge 21, the cylinder 26 at the corresponding position is used to push the lifting rod 24 downward, and the cover plate 25 and the outer tube 23 connected thereto are pushed downward, and the cover plate 25 closes the top of the double-layer casing, so that the filter cartridge 21 inside the double-layer casing is not affected by the induced draft fan (offline). At the same time, the first air inlet 221 and the second air inlet 231 are completely staggered, and the air inlet channel 201 is closed. Then, the corresponding electromagnetic pulse valve 34 is opened, and the filter cartridge 21 is blown toward the filter cartridge 21 by the blowing pipe 4. Compressed air is sprayed inside the cartridge 21 to clean the filter cartridge 21. Since the filter cartridge 21 is closed around one side, the fallen dust falls into the ash hopper 14 along the double-layer casing to prevent the fallen dust from being adsorbed by the adjacent filter cartridge 21. During cleaning, the equipment does not need to be shut down, and the filter cartridge 21 that is not involved in the cleaning can filter the dust normally. The control logic preset by the controller is used to control multiple filter units 2 to be cleaned one by one. While realizing offline cleaning of the filter cartridge 21, the equipment does not need to be shut down, thereby improving the cleaning effect.

[0043] In summary of the above embodiments: during filtering, the cover plate 25 corresponding to the filter cartridge 21 that needs to be cleaned is closed, so that the filter cartridge 21 inside the double-layer casing is not affected by the induced draft fan (offline), and then the pulse jet end corresponding to it on the pulse unit 3 is opened, and the compressed air is sprayed to the filter cartridge 21 by the spray pipe 4 to clean the filter cartridge 21, and during the cleaning, the equipment does not need to be shut down, and the filter cartridge 21 that is not involved in the cleaning can filter dust normally, and the control logic preset by the controller is used to control multiple filter units 2 to be cleaned one by one, and while the filter cartridge 21 is offline cleaned, the equipment does not need to be shut down, thereby improving the cleaning effect; When the cover plate 25 is closed, the air inlet channel 201 on the double-layer sleeve is also closed at the same time. At this time, the filter cartridge 21 is closed around one side. When the compressed air is sprayed to expand the filter cartridge 21 and vibrate to clean the dust, the fallen dust is concentrated in the double-layer sleeve and falls along the double-layer sleeve into the ash hopper 14, so as to prevent the fallen dust from being adsorbed by the adjacent filter cartridge 21.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A pulse dust removal device for quartz sand grinding, characterized in that: The invention comprises a box body (1) and a partition (11), wherein the partition (11) is fixed inside the box body (1), so that the internal cavity of the box body (1) is divided by the partition (11) into an upper cavity (101) and a lower cavity (102), and the box body (1) is provided with an air inlet pipe (12) and an air outlet pipe (13), wherein the air inlet pipe (12) is connected to the lower cavity (102), and the air outlet pipe (13) is connected to the upper cavity (101); A plurality of mounting holes (111) are arranged in an array on the partition plate (11), and a filtering unit (2) for filtering is installed in each of the mounting holes (111); A pulse unit (3) comprising a plurality of pulse jet ends, each of which is connected to the plurality of filter units (2) and is used to deliver compressed air into the filter unit (2); The filter unit (2) comprises a filter cartridge (21), the open end of the filter cartridge (21) faces the upper cavity (101), the outer side of the filter cartridge (21) is sleeved with a double-layer sleeve with openings at both ends, the double-layer sleeve is provided with a plurality of openable and closable air inlet channels (201) along the length direction, and the top opening of the double-layer sleeve is provided with an openable and closable cover plate (25); A blow pipe (4) is arranged on the cover plate (25), and the blow pipe (4) penetrates the cover plate (25), and the pulse jet end of the pulse unit (3) is connected to the blow pipe (4).

2. The pulse dust removal device for quartz sand grinding according to claim 1 is characterized in that: The double-layer casing comprises an inner tube (22) and an outer tube (23), wherein the inner tube (22) is sleeved on the outside of the filter cartridge (21) and connected to the partition plate (11), and the outer tube (23) is sleeved on the outside of the inner tube (22); The inner tube (22) is provided with a plurality of first air inlets (221) along the length direction, the outer tube (23) is provided with a plurality of second air inlets (231) along the length direction, the air inlet channel (201) is composed of the first air inlets (221) and the second air inlets (231), and the outer tube (23) is configured to be able to slide along the length direction of the inner tube (22), so that the first air inlets (221) and the second air inlets (231) overlap or stagger; When the first air inlet (221) and the second air inlet (231) overlap, the air inlet channel (201) is opened, and when the first air inlet (221) and the second air inlet (231) are completely staggered, the air inlet channel (201) is closed.

3. The pulse dust removal device for quartz sand grinding according to claim 2 is characterized in that: The cover plate (25) is configured to be able to slide synchronously with the outer tube (23); when the outer tube (23) slides to the point where the first air inlet (221) and the second air inlet (231) overlap, the cover plate (25) synchronously slides to an open state; and when the outer tube (23) slides to the point where the first air inlet (221) and the second air inlet (231) are completely interlaced, the cover plate (25) synchronously slides to a closed state.

4. The pulse dust removal device for quartz sand grinding according to claim 2 is characterized in that: The filter unit (2) further comprises a lifting rod (24), the lifting rod (24) being slidably plugged onto the partition plate (11), and the outer tube (23) and the cover plate (25) being connected to the lifting rod (24), so that the outer tube (23) and the cover plate (25) can slide synchronously.

5. The pulse dust removal device for quartz sand grinding according to claim 4 is characterized in that: A cylinder (26) is provided at one end of the lifting rod (24) for driving the lifting rod (24) to slide.

6. The pulse dust removal device for quartz sand grinding according to claim 1, characterized in that: The filter unit (2) further comprises a support (27) arranged inside the filter cartridge (21) and used for supporting the filter cartridge (21) from the inside.

7. The pulse dust removal device for quartz sand grinding according to claim 2 is characterized in that: The inner wall of the inner tube (22) has a plurality of evenly distributed support rods (28), and a gap is provided between the support rods (28) and the filter cartridge (21) for expansion of the filter cartridge (21), and the gap is smaller than the expansion amplitude of the filter cartridge (21).

8. The pulse dust removal device for quartz sand grinding according to claim 1 is characterized in that: The pulse unit (3) comprises an air storage tank (31) and an air supply pipe (32), wherein the air supply pipe (32) is connected to the air storage tank (31), and the pulse jet end comprises a connecting hose (33) and an electromagnetic pulse valve (34), wherein one end of the connecting hose (33) is connected to the air supply pipe (32), and the other end of the connecting hose (33) is connected to the jet pipe (4), and the electromagnetic pulse valve (34) is connected to the connecting hose (33).

9. The pulse dust removal device for quartz sand grinding according to claim 1, characterized in that: An ash hopper (14) for collecting aggregates is provided at the bottom of the box body (1).

10. The pulse dust removal device for quartz sand grinding according to claim 1, characterized in that: A guide plate (15) for guiding airflow is provided on the inner side of the box body (1) at a position close to the air inlet pipe (12).

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