Steel part casting dust removal device

Abstract

The utility model relates to the technical field of dust removal equipment, in particular to a steel part casting dust removal device which comprises a dust removal box, an upper box is fixedly mounted at the top of the dust removal box, a dust hopper is fixedly mounted at the bottom of the dust removal box, a dust discharge assembly is arranged at the bottom of the dust hopper, and an air outlet pipe is fixedly mounted on one side of the upper box. A dust-gas inlet pipe is fixedly mounted on one side of the dust hopper, a plurality of dust removal assemblies are arranged at the bottom of the upper box body and extend into the dust removal box body, and a pulse assembly used for blowing airflow into the dust removal assemblies is fixedly mounted in the upper box body; the dust removal device has the beneficial effects that by arranging the dust removal assembly and the torsion assembly, the torsion part of the filter bag can be unfolded, meanwhile, the contracted part of the filter bag can be expanded, and particulate matter attached to the surface of the filter bag can fall off again in the unfolding and expanding process of the filter bag; dust particles attached to the outside of the filter bag are completely separated in cooperation with blowing, and the dust removal effect of the filter bag is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, and specifically to a dust removal device for steel casting. Background Technology

[0002] Dust and fumes generated during the steel casting process have a significant impact on the environment and workers' health. Therefore, specialized dust removal equipment is needed to control and reduce pollution. Conventional steel casting dust removal equipment uses pneumatic conveying to transport waste gas to a bag filter for dust treatment.

[0003] Baghouse dust collector: It filters out dust from dust-laden gas through filter bags, and the cleaned gas is discharged into the atmosphere. The collected dust can be further processed and utilized.

[0004] A uniform filtration bag filter dust collector disclosed in Chinese Patent Publication No. CN117839334A features a diverter design that allows for velocity regulation of dust-laden gas as it passes through an adjustable flow channel. The regulated dust-laden gas is then directly sprayed onto different rows of cage-type filter elements, ensuring that filter elements near or far from the diverter can contact the dust-laden gas immediately. This achieves efficient and uniform filtration of the dust-laden gas by all filter elements, improving the overall filtration effect of the dust collector.

[0005] However, since the dust or impurities generated during the steel casting process contain moisture or oil, during filtration, the moisture or oil will cause the dust to clump and adhere to the outside of the filter cartridge. Simply using pulse jet cleaning cannot blow away the clumps of dust, thus affecting the subsequent filtration effect of the filter cartridge. At the same time, since the dust may contain a lot of fine particles, some larger dust particles attached to the filter bag will be cleaned by the pulse jet, but some smaller dust particles will adhere to the gaps in the filter bag. Since the air generated by the pulse jet gradually weakens from the top to the bottom of the filter bag, it cannot be completely cleaned by the pulse jet alone. After a long period of dust processing, the filter bag of the baghouse dust collector is prone to clogging, especially near the bottom. These particles can easily clog the filter media, leading to increased system resistance and affecting the dust removal effect and the working efficiency of the fan. Summary of the Invention

[0006] This invention provides a dust removal device for steel casting to solve the problems mentioned in the background art.

[0007] The present invention provides a dust removal device for steel casting, comprising a dust removal chamber, an upper chamber fixedly mounted on the top of the dust removal chamber, a dust hopper fixedly mounted on the bottom of the dust removal chamber, a dust discharge assembly at the bottom of the dust hopper, an air outlet pipe fixedly mounted on one side of the upper chamber, a dust inlet pipe fixedly mounted on one side of the dust hopper, multiple dust removal assemblies at the bottom of the upper chamber, all extending into the interior of the dust removal chamber, and a pulse assembly for spraying airflow into the multiple dust removal assemblies fixedly mounted inside the upper chamber; each dust removal assembly includes a connector threadedly connected to the upper chamber. The outer surface of the connector is provided with a groove, and a first clamping member and a second clamping member are slidably arranged inside the groove. The first clamping member and the second clamping member are connected to the groove through an elastic member. A filter bag is fixedly installed at the bottom of the first clamping member and the second clamping member. The bottom of the connector is provided with a torsion assembly for controlling the deformation of the filter bag. When the filter bag is blocked, its own weight causes the first clamping member and the second clamping member to press down on the elastic member and fall down. Then, the torsion assembly causes multiple parts of the filter bag to contract and torsion. When the shape of the filter bag changes, most of the dust particles attached to its outside fall off.

[0008] Furthermore, the torsion assembly includes a fixed ring fixedly installed at the bottom of the connector. A conical ring is fixedly installed at the bottom of the fixed ring. Multiple torsion tightening grooves are formed on the outer surface of the conical ring. Torsion pull rods are slidably installed inside the multiple torsion tightening grooves. The torsion pull rods are slidably engaged with the torsion tightening grooves through a hinge assembly. A turntable is movably connected to one end of the multiple torsion pull rods away from the torsion tightening grooves. A fixed plate is rotatably installed at the bottom of the turntable. Multiple fixed support rods are fixedly installed on the outer surface of the fixed plate.

[0009] Furthermore, the fixing plate is fixedly installed on the bottom surface inside the filter bag, and multiple torsion rods and multiple fixing support rods are connected to the inner wall of the filter bag.

[0010] Furthermore, the fixing ring has a mating groove at the upper opening of each of the multiple torsion tightening grooves.

[0011] Furthermore, the hinge assembly includes a movable block slidably disposed inside the torsion tightening groove. A spherical groove is provided on the side of the movable block near the torsion rod. A spherical component is movably connected inside the spherical groove, and the outer surface of the spherical component is fixedly connected to the end of the torsion rod.

[0012] Furthermore, the torsion tightening groove is an arc-shaped groove with a T-shaped cross-section. The movable block slides into the torsion tightening groove, and the movable block is adapted to the mating groove opening.

[0013] Furthermore, a rotating shaft is fixed at the center of the top of the fixed disk, and a rotating hole is opened on the turntable corresponding to the position of the rotating shaft. The rotating shaft is connected to the rotating hole through a bearing, and an insertion hole is opened on the end of the turntable corresponding to the ends of multiple torsion rods.

[0014] Furthermore, both the first clamping member and the second clamping member are semicircular, and the first clamping member and the second clamping member are connected by bolts and nuts.

[0015] Furthermore, the ash discharge assembly includes an ash discharge pipe fixedly installed at the bottom of the ash hopper, and a solenoid valve is provided on the ash discharge pipe.

[0016] Furthermore, the pulse assembly includes an air tank fixedly installed on the outside of the upper housing. Multiple blow pipes are fixedly provided on the outer surface of the air tank. The multiple blow pipes extend into the interior of the upper housing. Venturi tubes are fixedly provided at the openings of the multiple blow pipes corresponding to the openings of the multiple dust removal components.

[0017] The beneficial effects of this invention are as follows: by setting up a dust removal component and a twisting component, the filter bag can be kept in a contracted and twisted state when it is clogged. When the shape of the filter bag changes, most of the dust particles attached to its outside will fall off, and at the same time, some dust attached to the inside of the filter bag gap will be squeezed out. When the filter bag is blown by a jet, the twisted part of the filter bag will be unfolded, and its contracted part will also be stretched open. During the unfolding and stretching process, the particles attached to the surface of the filter bag can fall off again, and with the jet blowing, the dust particles attached to the outside of the filter bag will be completely removed, effectively ensuring the dust removal effect of the filter bag. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of the dust collector housing of the present invention;

[0020] Figure 2 This is a schematic diagram of the dust removal component of the present invention;

[0021] Figure 3 This is a schematic diagram showing the state of the torsion bar when the filter bag of the present invention is unfolded;

[0022] Figure 4 This is a schematic diagram showing the state of the filter bag of the present invention when it is unfolded;

[0023] Figure 5 This is a schematic diagram showing the state of the torsion bar when the filter bag of the present invention contracts and twists;

[0024] Figure 6 This is a schematic diagram showing the state of the filter bag during shrinkage and twisting according to the present invention;

[0025] Figure 7This is a partial cross-sectional view of the conical ring of the present invention.

[0026] Figure 8 This is a schematic diagram of the torsion tie rod and fixed support rod of the present invention;

[0027] Figure 9 This is a schematic diagram of the hinge assembly of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the first clamping member, the second clamping member, and the filter bag of the present invention;

[0029] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point A;

[0030] Figure 12 This is a schematic diagram of the socket structure of the present invention.

[0031] In the diagram: 1. Dust collector housing; 2. Upper housing; 201. Exhaust pipe; 3. Ash hopper; 301. Dust inlet pipe; 4. Ash discharge assembly; 401. Ash discharge pipe; 402. Solenoid valve; 5. Dust collector assembly; 501. Connector; 5011. Slide groove; 5012. Elastic element; 502. First clamping element; 503. Second clamping element; 504. Filter bag; 6. Pulse assembly; 601. Air tank; 60 2. Blowpipe; 603. Venturi tube; 7. Torsion assembly; 701. Fixing ring; 7011. Connecting groove; 702. Conical ring; 703. Torsion tightening groove; 704. Torsion tie rod; 705. Turntable; 7051. Insertion hole; 706. Fixing plate; 7061. Rotating shaft; 707. Fixing support rod; 8. Hinge assembly; 801. Moving block; 802. Spherical groove; 803. Spherical component. 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] An embodiment of the dust removal device for steel casting according to the present invention is as follows: Figures 1 to 12As shown, the system includes a dust collector housing 1, an upper housing 2 fixedly mounted on the top of the dust collector housing 1, a dust hopper 3 fixedly mounted on the bottom of the dust collector housing 1, a dust discharge assembly 4 at the bottom of the dust hopper 3, an air outlet pipe 201 fixedly mounted on one side of the upper housing 2, a dust inlet pipe 301 fixedly mounted on one side of the dust hopper 3, and multiple dust collector assemblies 5 at the bottom of the upper housing 2, all of which extend into the interior of the dust collector housing 1. A pulse assembly 6 for blowing airflow into the multiple dust collector assemblies 5 is fixedly mounted inside the upper housing 2. Each dust collector assembly 5 includes a connector 501 threadedly connected to the upper housing 2, and a groove 5011 is formed on the outer surface of the connector 501. The groove 5011 has a sliding groove inside. The device is equipped with a first clamping member 502 and a second clamping member 503. The first clamping member 502 and the second clamping member 503 are connected to the slide groove 5011 through an elastic member 5012. A filter bag 504 is fixedly installed at the bottom of the first clamping member 502 and the second clamping member 503. The bottom of the connecting member 501 is provided with a torsion assembly 7 for controlling the deformation of the filter bag 504. When the filter bag 504 is blocked, its own weight causes the first clamping member 502 and the second clamping member 503 to press down on the elastic member 5012 and fall down. Then, the torsion assembly 7 causes multiple parts of the filter bag 504 to contract and torsion. When the shape of the filter bag 504 changes, most of the dust particles attached to its outside fall off.

[0034] like Figures 2 to 6 As shown, the torsion assembly 7 includes a fixing ring 701 fixedly installed at the bottom of the connector 501. A conical ring 702 is fixedly installed at the bottom of the fixing ring 701. Multiple torsion tightening grooves 703 are formed on the outer surface of the conical ring 702. Torsion pull rods 704 are slidably installed inside each of the multiple torsion tightening grooves 703. The torsion pull rods 704 are slidably engaged with the torsion tightening grooves 703 via a hinge assembly 8. A turntable 705 is movably connected to one end of each torsion pull rod 704 away from the torsion tightening groove 703. A fixed disk 706 is rotatably installed at the bottom of the turntable 705. Multiple fixed support rods 707 are fixedly installed on the outer surface of the fixed disk 706. The fixed disk 706 is fixedly installed on the bottom surface inside the filter bag 504. The multiple torsion pull rods 704 and the multiple fixed support rods 707 are all connected to the inner wall of the filter bag 504. The fixing ring 701 has mating slots 7011 at the upper openings of the multiple torsion tightening grooves 703. Figure 9 As shown, the hinge assembly 8 includes a movable block 801 slidably disposed inside the torsion tightening groove 703. A spherical groove 802 is formed on the side of the movable block 801 near the torsion rod 704. A spherical component 803 is movably connected inside the spherical groove 802. The outer surface of the spherical component 803 is fixedly connected to the end of the torsion rod 704. Figures 7 to 9As shown, the torsion tightening groove 703 is an arc-shaped groove with a T-shaped cross-section. The movable block 801 slides into the torsion tightening groove 703, and the movable block 801 is adapted to the mating groove 7011. A rotating shaft 7061 is fixedly provided at the center of the top of the fixed disk 706. A rotating hole is provided on the turntable 705 corresponding to the position of the rotating shaft 7061. The rotating shaft 7061 is connected to the rotating hole through a bearing. An insertion hole 7051 is provided on the end of each of the multiple torsion tie rods 704 on the turntable 705. Figure 4 and Figure 6 As shown, by utilizing the designed bearings, the frictional force during the rotation of the turntable 705 can be reduced, thereby allowing the movable block 801 to slide downwards from above the torsion tightening groove 703, as... Figure 12 As shown, the torsion rod 704 and the insertion hole 7051 are engaged to allow the torsion rod 704 to rotate the turntable 705, while the end of the torsion rod 704 can be inserted into the insertion hole 7051. Figures 2 to 6 As shown, when the filter bag 504 is clogged, its own weight causes the first clamping member 502 and the second clamping member 503 to press down on the elastic member 5012 and fall. When the filter bag 504 falls, the cooperation between the movable block 801, the torsion tightening groove 703, and the conical surface of the conical ring 702 allows the torsion lever 704 to twist while pulling the filter bag 504, thereby changing the shape of the filter bag 504. This keeps part of the filter bag 504 in a contracted state. When the shape of the filter bag 504 changes, most of the dust particles attached to its outside fall off, and at the same time, some of the dust attached to the gaps inside the filter bag 504 is squeezed out.

[0035] like Figure 10 and Figure 11 As shown, both the first clamping member 502 and the second clamping member 503 are semicircles. The first clamping member 502 and the second clamping member 503 are connected by bolts and nuts. The first clamping member 502 and the second clamping member 503 can be quickly separated by bolts and nuts, which facilitates the separation of the first clamping member 502 and the second clamping member 503 from the slide groove 5011 and makes it convenient to replace the filter bag 504.

[0036] like Figure 1 As shown, the ash discharge assembly 4 includes an ash discharge pipe 401 fixedly installed at the bottom of the ash hopper 3. The ash discharge pipe 401 is equipped with a solenoid valve 402. After the dust falls off, it will accumulate inside the ash hopper 3. Then, by opening the solenoid valve 402, the dust can be discharged from the ash discharge pipe 401, thereby enabling the dust to be recycled and reused.

[0037] like Figure 1As shown, the pulse assembly 6 includes an air tank 601 fixedly installed on the outside of the upper housing 2. Multiple blowpipes 602 are fixedly provided on the outer surface of the air tank 601, extending into the interior of the upper housing 2. Venturi tubes 603 are fixedly provided at the openings of the multiple blowpipes 602 corresponding to the openings of the multiple dust collection components 5. Figures 1 to 6 As shown, by activating the gas tank 601, high-pressure gas is sequentially injected from the blowpipe 602 into multiple venturi tubes 603. The high-pressure gas then flows from the venturi tubes 603 into the filter bag 504. After the filter bag 504 is blown through, the dust adhering to its surface is detached, thus reducing the weight of the filter bag 504. Figures 2 to 9 As shown, when the weight of the filter bag 504 becomes lighter, the first clamping member 502 and the second clamping member 503 no longer press down on the elastic member 5012. Then, the elastic member 5012 can pull back the first clamping member 502, the second clamping member 503 and the filter bag 504. Afterwards, the cooperation between the movable block 801, the torsion tightening groove 703 and the conical surface of the conical ring 702 allows the torsion rod 704 to change from a pulling and torsioning state to a tensioning state. The torsion part of the filter bag 504 will be unfolded, and its contracted part will also be stretched open. During the unfolding and stretching process, the particles attached to the surface of the filter bag 504 can be detached again. In addition, the blowing can promote the complete removal of dust particles attached to the outside of the filter bag 504, effectively ensuring the dust removal effect of the filter bag 504.

[0038] The dust collector housing 1, upper housing 2, ash hopper 3, ash discharge assembly 4, filter bag 504 and pulse assembly 6 described in this application are all known technologies in this field, therefore their specific structures and working principles are not described in detail.

[0039] The work process is as follows:

[0040] S1, such as Figure 1 As shown, the dust generated during the casting of steel parts will be sucked into the ash hopper 3 through the dust inlet pipe 301, and then filtered by the filter bag 504, allowing the gas to enter the upper box 2 from the inside of the filter bag 504, and then discharged through the outlet pipe 201.

[0041] S2, such as Figure 2 , Figure 3 , Figure 4 and Figure 7 When the filter bag 504 is not clogged, its own weight is insufficient to press down the elastic member 5012 and cause it to fall. At this time, the fixed support rod 707 and the torsion rod 704 will tighten the inner wall of the filter bag 504, thereby keeping the filter bag 504 in the unfolded state.

[0042] S3, such as Figure 2 and Figure 5As shown, when the filter bag 504 is clogged, its own weight causes the first clamping member 502 and the second clamping member 503 to press down on the elastic member 5012 and fall.

[0043] S4, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, when the filter bag 504 falls, the cooperation between the movable block 801, the torsion tightening groove 703, and the conical surface of the conical ring 702 allows the torsion lever 704 to twist while pulling the filter bag 504, thereby changing the shape of the filter bag 504. This keeps part of the filter bag 504 in a contracted state. When the shape of the filter bag 504 changes, most of the dust particles attached to its outside fall off, and at the same time, some of the dust attached to the gaps inside the filter bag 504 is squeezed out.

[0044] S5, such as Figure 1 As shown, by activating the gas tank 601, high-pressure gas is sequentially injected from the blow pipe 602 into multiple venturi tubes 603, and then the high-pressure gas is injected from the venturi tubes 603 into the filter bag 504.

[0045] S6, such as Figure 1 and Figure 2 As shown, after the filter bag 504 is blown, the dust attached to the surface of the filter bag 504 will fall off again, thereby making the filter bag 504 lighter.

[0046] S7, such as Figures 2 to 9 As shown, when the weight of the filter bag 504 becomes lighter, the first clamping member 502 and the second clamping member 503 no longer press down on the elastic member 5012. Then, the elastic member 5012 can pull back the first clamping member 502, the second clamping member 503 and the filter bag 504. Afterwards, the cooperation between the movable block 801, the torsion tightening groove 703 and the conical surface of the conical ring 702 allows the torsion rod 704 to change from a pulling and torsioning state to a tensioning state. The torsion part of the filter bag 504 will be unfolded, and its contracted part will also be stretched open. During the unfolding and stretching process, the particles attached to the surface of the filter bag 504 can be detached again. In addition, the blowing can promote the complete removal of dust particles attached to the outside of the filter bag 504, effectively ensuring the dust removal effect of the filter bag 504.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust removal device for steel casting, comprising a dust removal box (1), characterized in that: The top of the dust collector (1) is fixedly installed with an upper box (2), the bottom of the dust collector (1) is fixedly installed with a ash hopper (3), the bottom of the ash hopper (3) is provided with an ash discharge assembly (4), an air outlet pipe (201) is fixedly installed on one side of the upper box (2), a dust inlet pipe (301) is fixedly installed on one side of the ash hopper (3), a plurality of dust collector assemblies (5) are provided at the bottom of the upper box (2), and the plurality of dust collector assemblies (5) extend into the interior of the dust collector (1). The interior of the upper box (2) is fixedly installed with a pulse assembly (6) for blowing airflow into the interior of the plurality of dust collector assemblies (5). The dust removal assembly (5) includes a connector (501) threadedly connected to the upper housing (2). A groove (5011) is formed on the outer surface of the connector (501). A first clamping member (502) and a second clamping member (503) are slidably disposed inside the groove (5011). The first clamping member (502) and the second clamping member (503) are connected to the groove (5011) via an elastic member (5012). The bottoms of the first clamping member (502) and the second clamping member (503) are... A filter bag (504) is fixedly installed. The bottom of the connector (501) is provided with a torsion assembly (7) for controlling the deformation of the filter bag (504). When the filter bag (504) is blocked, its own weight causes the first clamping member (502) and the second clamping member (503) to press down on the elastic member (5012) and fall down. Then, the torsion assembly (7) causes multiple parts of the filter bag (504) to contract and twist. When the shape of the filter bag (504) changes, most of the dust particles attached to its outside fall off.

2. The dust removal device for steel casting according to claim 1, characterized in that: The torsion assembly (7) includes a fixed ring (701) fixedly installed at the bottom of the connector (501). A conical ring (702) is fixedly installed at the bottom of the fixed ring (701). A plurality of torsion tightening grooves (703) are provided on the outer surface of the conical ring (702). A torsion pull rod (704) is slidably provided inside each of the plurality of torsion tightening grooves (703). The torsion pull rod (704) is slidably engaged with the torsion tightening groove (703) through a hinge assembly (8). A turntable (705) is movably connected to one end of the plurality of torsion pull rods (704) away from the torsion tightening groove (703). A fixed plate (706) is rotatably provided at the bottom of the turntable (705). A plurality of fixed support rods (707) are fixedly installed on the outer surface of the fixed plate (706).

3. The dust removal device for steel casting according to claim 2, characterized in that: The fixing plate (706) is fixedly installed on the bottom surface inside the filter bag (504), and the plurality of torsion rods (704) and the plurality of fixing support rods (707) are all connected to the inner wall of the filter bag (504).

4. The dust removal device for steel casting according to claim 2, characterized in that: The fixing ring (701) has a docking slot (7011) at the upper opening of each of the multiple torsion tightening grooves (703).

5. A dust removal device for steel casting according to claim 4, characterized in that: The hinge assembly (8) includes a movable block (801) slidably disposed inside the torsion tightening groove (703). The movable block (801) has a spherical groove (802) on the side near the torsion rod (704). A spherical component (803) is movably connected inside the spherical groove (802). The outer surface of the spherical component (803) is fixedly connected to the end of the torsion rod (704).

6. A dust removal device for steel casting according to claim 5, characterized in that: The torsion tightening groove (703) is an arc-shaped groove with a T-shaped cross-section. The movable block (801) slides with the torsion tightening groove (703) and is adapted to the docking slot (7011).

7. A dust removal device for steel casting according to claim 2, characterized in that: A rotating shaft (7061) is fixedly provided at the center of the top of the fixed disk (706). A rotating hole is provided on the turntable (705) corresponding to the position of the rotating shaft (7061). The rotating shaft (7061) is connected to the rotating hole through a bearing. An insertion hole (7051) is provided on the end of each of the multiple torsion rods (704) of the turntable (705).

8. A dust removal device for steel casting according to claim 2, characterized in that: Both the first clamping member (502) and the second clamping member (503) are semicircular, and the first clamping member (502) and the second clamping member (503) are connected by bolts and nuts.

9. A dust removal device for steel casting according to claim 1, characterized in that: The ash discharge assembly (4) includes an ash discharge pipe (401) fixedly installed at the bottom of the ash hopper (3), and a solenoid valve (402) is provided on the ash discharge pipe (401).

10. A dust removal device for steel casting according to claim 1, characterized in that: The pulse assembly (6) includes an air tank (601) fixedly installed on the outside of the upper housing (2). Multiple blow pipes (602) are fixedly provided on the outer surface of the air tank (601). The multiple blow pipes (602) extend into the interior of the upper housing (2). Venturi tubes (603) are fixedly provided at the openings of the multiple dust removal assemblies (5) corresponding to the multiple blow pipes (602).

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