Combined bag-type dust collector

Abstract

The invention discloses a combined bag-type dust remover, which relates to the technical field of dust removal and comprises a sealing box, an air inlet pipe and an air outlet pipe, a first horizontal plate and a second horizontal plate which are arranged up and down are mounted in the sealing box; a plurality of exhaust holes are formed in the first horizontal plate, a supporting ring is mounted at each exhaust hole, a cloth bag sleeves each supporting ring, and a disc is mounted at the bottom of each cloth bag; the cloth bag has a first tensioned state and a second twisted state; blanking holes are formed in the positions, corresponding to all the cloth bags, of the second horizontal plate, and adjusting assemblies used for adjusting the states of the cloth bags are installed at the blanking holes. The mode that a framework and a cloth bag are combined in a traditional bag-type dust collector is abandoned, and a framework-free structure is adopted. When the cloth bag is subjected to dust removal, the disc rotates, the cloth bag is twisted and deformed, part of floating dust can automatically fall off, meanwhile, when the cloth bag is twisted, wrinkles are generated on the outer surface of the cloth bag, the outer surfaces rub against each other, and falling of a compact dust layer is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal, in particular to a combined bag-type dust collector. BACKGROUND

[0002] The bag-type dust collector is a kind of dry high-efficiency dust removal equipment, which is widely used in industrial production to capture dust and particulate matter. The bag-type dust collector uses fiber filter bags to filter dust-containing gas, and its working process usually includes the stages of filtration, dust accumulation, dust cleaning and dust removal. There are researches on the bag-type dust collector in the prior art.

[0003] For example, the bag-type dust collector disclosed in the Chinese Utility Model Patent No. CN223351263U relates to the field of dust collectors. The bag-type dust collector comprises a tank body, a support plate fixedly connected in the tank body, a filter bag inserted into a plug-in slot formed in the support plate, and the filter bag is detachably connected with the support plate. The tank body is fixedly connected with an air inlet pipe and an air outlet pipe, and further comprises a cover plate detachably connected with the tank body, a lifting plate, and a rotating shaft arranged in the filter bag. One end of the rotating shaft penetrates through the cover plate and is rotatably connected with the lifting plate.

[0004] For example, the bag-type dust collector with cooling structure for waste gas treatment disclosed in the Chinese Utility Model Patent No. CN223336992U comprises a bag-type dust collector, and a cooling box connected with the air inlet of the bag-type dust collector through a connecting pipeline. The cooling box comprises a box body, an air inlet and an air outlet. The air inlet and the air outlet are fixed to the front end of the box body and the top of the air inlet respectively, and are in communication with the inner cavity of the box body. The air outlet is connected with the connecting pipeline. A cooling assembly is arranged in the box body. The waste gas enters the box body through the air inlet and contacts with the cooling assembly to realize heat exchange and cooling.

[0005] In the prior art, a framework is arranged on each bag to make the bag in an unfolded state to ensure the filtering effect of the bag on dust. Since the framework is attached to the bag, continuous friction will occur between the bag and the framework when the bag deforms. Therefore, when the bag is cleaned, the friction between the framework and the bag will cause the bag to wear and tear, reducing the service life of the bag. SUMMARY

[0006] The purpose of the present application is to provide a combined bag-type dust collector to solve the above-mentioned problems in the prior art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A combined cloth bag dust collector, comprising a sealed box, an air inlet pipe and an air outlet pipe connected with the sealed box; a first horizontal plate and a second horizontal plate arranged in sequence are installed in the sealed box; a plurality of exhaust holes are formed in the first horizontal plate, and a supporting ring is installed at each exhaust hole; a cloth bag is sleeved on the supporting ring; a disc is installed at the bottom of the cloth bag; the cloth bag has a first state of tension and a second state of torsion; a blanking hole is formed in the second horizontal plate at a position corresponding to each cloth bag; and an adjusting assembly for adjusting the state of the cloth bag is installed at the blanking hole.

[0008] As a preferred technical scheme of the present application, a pressing ring is arranged above the supporting ring to press the top of the cloth bag.

[0009] As a preferred technical scheme of the present application, a counterweight plate is fixedly installed at the bottom of the disc; the adjusting assembly comprises a horizontal ring rotatably installed on the second horizontal plate, a rigid arm fixedly installed on the inner side of the horizontal ring, and a round pin installed on the rigid arm; a vertical slot is formed in the counterweight plate and matched with the round pin.

[0010] As a preferred technical scheme of the present application, a ball is installed at the bottom of the horizontal ring and matched with the second horizontal plate.

[0011] As a preferred technical scheme of the present application, a gear is fixedly sleeved on the horizontal ring, and a rack engaged with the gear is slidably installed on the second horizontal plate; end plates are fixedly installed at the ends of the racks; an extension rod for controlling the end plates is installed on the sealed box.

[0012] As a preferred technical scheme of the present application, the disc comprises a base fixedly connected with the counterweight plate and a screw cap threadedly matched with the base; a vertical control rod is fixedly installed on the screw cap; and the cloth bag is located between the base and the screw cap.

[0013] As a preferred technical scheme of the present application, a limiting block is fixedly installed on the rigid arm and matched with the counterweight plate.

[0014] As a preferred technical scheme of the present application, the bottom edge of the screw cap is formed in a round shape; a wedge-shaped extrusion block is slidably installed on the inner bottom surface of the base along the radial direction thereof; and the outer side surface of the extrusion block is arc-shaped and used for pressing the cloth bag against the inner wall of the base.

[0015] As a preferred technical scheme of the present application, two horizontal semicircular plates are rotatably installed on the lower surface of the first horizontal plate at positions corresponding to each exhaust hole; the two semicircular plates have an open state of mutual separation and a sealed state of mutual adhesion; and the semicircular plates play a sealing role on the exhaust holes in the sealed state.

[0016] As a preferred embodiment of the present invention, a rotating shaft passing through the first horizontal plate is fixedly installed on the semicircular plate, and a torsion spring is connected between the rotating shaft and the first horizontal plate; a rotating arm is fixedly installed on the top of the control rod, and a driven plate that interacts with the rotating arm is fixedly installed on the top of the rotating shaft.

[0017] In the above technical solution, the present invention provides a combined bag filter dust collector that abandons the traditional method of combining the frame and the filter bag in bag filter dust collectors, and adopts a frameless structure. Specifically, a disc at the bottom of the filter bag applies a downward pulling force to the filter bag, keeping the filter bag in an unfolded state during normal filtration. When the filter bag needs to be cleaned, the disc rotates, causing the filter bag to twist and deform. During the deformation of the filter bag, some of the floating dust will automatically fall off. At the same time, when the filter bag twists, wrinkles are formed on its outer surface, causing the outer surfaces to rub against each other, promoting the shedding of the dense dust layer. In this way, there is no friction between the frame and the filter bag during the cleaning process, which greatly reduces the wear on the filter bag.

[0018] This invention allows for bag replacement without shutting down the machine, and prevents unfiltered gas from escaping. Specifically, it uses two semi-circular plates to seal the exhaust vents. These plates not only seal the exhaust vents during bag replacement but also automatically beat the bags during the dust removal process, further promoting dust separation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the external three-dimensional structure of the combined bag filter in Example 1;

[0021] Figure 2 This is a partial internal structure diagram of the combined bag filter in Example 1;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a first three-dimensional structural diagram of the disc, cloth bag, and adjustment assembly in Embodiment 2;

[0024] Figure 5 This is a schematic diagram of the second three-dimensional structure of the disc, bag, and adjustment assembly in Embodiment 2.

[0025] Figure 6 This is a schematic diagram showing the working state of the disc, cloth bag, and adjustment assembly in Example 2;

[0026] Figure 7 This is a first three-dimensional structural diagram of the bag, pressure ring, control rod, and rotating arm in Example 2;

[0027] Figure 8 This is a schematic diagram of the second three-dimensional structure of the cloth bag, pressure ring, control rod, and rotating arm in Example 2;

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Sealed box; 2. Air inlet pipe; 3. Air outlet pipe; 4. First horizontal plate; 5. Second horizontal plate; 501. Material drop hole; 6. Support ring; 7. Filter bag; 8. Disc; 801. Base; 802. Rotary cap; 803. Extrusion block; 9. Adjustment assembly; 901. Horizontal ring; 902. Rigid arm; 903. Round pin; 904. Ball bearing; 10. Pressure ring; 11. Counterweight plate; 1101. Vertical groove; 12. Gear; 13. Rack; 14. End plate; 15. Telescopic rod; 16. Control rod; 17. Limit block; 18. Semicircular plate; 19. Rotating shaft; 20. Rotating arm; 21. Driven plate. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides a combined bag filter dust collector, including a sealed box 1, an inlet pipe 2 and an outlet pipe 3 connecting the sealed box 1; the gas containing dust enters the sealed box 1 from the inlet pipe 2, is filtered and discharged from the outlet pipe 3.

[0033] like Figure 2 and Figure 3 As shown, the sealed box 1 is equipped with a first horizontal plate 4 and a second horizontal plate 5 arranged vertically. Both the first horizontal plate 4 and the second horizontal plate 5 are horizontal. The first horizontal plate 4 has several vent holes, and a support ring 6 is installed at each vent hole. The inner ring surface of the support ring 6 is flush with the edge of the vent hole. A cloth bag 7 is fitted on the support ring 6. A pressure ring 10 is provided above the support ring 6 to press the top of the cloth bag 7. The edge of the pressure ring 10 is made of rubber, which generates a squeezing force between the inner wall of the vent hole and the cloth bag 7 to press the cloth bag 7. A disc 8 is installed at the bottom of the cloth bag 7. A counterweight plate 11 is fixedly installed at the bottom of the disc 8. The cloth bag 7 has a first tensioned state and a second twisted state. A material discharge hole 501 is provided on the second horizontal plate 5 corresponding to the position of each cloth bag 7.

[0034] Under normal operating conditions, the top of the filter bag 7 is pressed tightly against the support ring 6 by the pressure ring 10, ensuring that the filter bag 7 will not fall downwards. The weight of the counterweight plate 11 acts on the disc 8, causing the disc 8 to exert a vertical downward pulling force on the filter bag 7, thus ensuring that the filter bag 7 is in a stretched and taut state. Dust-laden gas is outside the filter bag 7. When the air pressure outside the filter bag 7 reaches a certain value, the gas will flow through the filter bag 7 into the filter bag 7. During this process, dust is filtered onto the outer surface of the filter bag 7. When a certain amount of dust accumulates, the outer surface of the filter bag 7 needs to be cleaned. Specifically, the counterweight plate 11 is rotated by external force, causing the disc 8 to rotate, thereby twisting the filter bag 7 at a certain angle. When the filter bag 7 deforms, some floating dust will fall off its outer surface. At the same time, the filter bag 7 wrinkles, causing its outer surfaces to rub against each other, further promoting the shedding of the dust layer. It should be noted that when the filter bag 7 is twisted, the disc 8 and the counterweight plate 11 will rise to a certain height. When the external force acting on the counterweight plate 11 disappears, the disk 8 and the counterweight plate 11 will descend to their initial height under their own gravity.

[0035] like Figure 3 As shown, an adjustment assembly 9 for adjusting the state of the cloth bag 7 is installed at the material discharge hole 501. The adjustment assembly 9 includes a horizontal ring 901 rotatably mounted on the second horizontal plate 5, a rigid arm 902 fixedly mounted on the inner side of the horizontal ring 901, and a round pin 903 mounted on the rigid arm 902. A vertical groove 1101 that mates with the round pin 903 is provided on the counterweight plate 11. A ball bearing 904 that mates with the second horizontal plate 5 is installed at the bottom of the horizontal ring 901 to reduce the friction between the two. In the initial state, the horizontal ring 901 remains stationary, and the round pin 903 is located at the top of the vertical groove 1101. When the horizontal ring 901 rotates under the action of an external force, the rigid arm 902 and the round pin 903 rotate synchronously. The round pin 903 drives the counterweight plate 11 to rotate. During the rotation of the counterweight plate 11, it rises, and the round pin 903 descends relative to the vertical groove 1101.

[0036] like Figure 2 and Figure 3 As shown, a gear 12 is fixedly sleeved on the horizontal ring 901, and a rack 13 that meshes with the gear 12 is slidably installed on the second horizontal plate 5; an end plate 14 is fixedly installed at the end of each rack 13; a telescopic rod 15 for controlling the end plate 14 is installed on the sealing box 1, and the telescopic rod 15 is an electrically controlled telescopic structure. When the filter bag 7 needs to be cleaned, it is only necessary to control the telescopic rod 15 to reciprocate. The telescopic rod 15 will drive the end plate 14 and each rack 13 to reciprocate and translate, and the rack 13 will drive the gear 12 that meshes with it to rotate reciprocally, thereby causing the horizontal ring 901 to rotate reciprocally, realizing the process of the filter bag 7 returning to its original state after multiple twists, and completing the cleaning of the outer surface of the filter bag 7.

[0037] Example 2

[0038] Traditional baghouse dust collectors require system shutdown for bag replacement, necessitating the installation of two separate dust collectors for continuous production. This undoubtedly increases equipment costs and floor space requirements. This embodiment addresses this issue by enabling bag replacement without shutting down the system.

[0039] like Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, based on the previous embodiment, the disc 8 includes a base 801 fixedly connected to the counterweight plate 11 and a screw cap 802 threadedly connected to the base 801. The outer wall of the screw cap 802 matches the inner surface size of the cloth bag 7. A vertical control rod 16 is fixedly installed on the screw cap 802, and the control rod 16 passes through the corresponding exhaust hole on the first horizontal plate 4. The cloth bag 7 is located between the base 801 and the screw cap 802. The bottom edge of the screw cap 802 forms a rounded corner. A wedge-shaped pressing block 803 is slidably installed radially on the inner bottom surface of the base 801. The outer side of the pressing block 803 is arc-shaped and used to press the cloth bag 7 tightly against the inner wall of the base 801. Two horizontal semicircular plates 18 are rotatably installed on the lower surface of the first horizontal plate 4 corresponding to the position of each exhaust hole. The two semicircular plates 18 have an open state that is separated from each other and a sealed state that is fitted together. In the sealed state, the semicircular plates 18 seal the exhaust holes.

[0040] Under normal operating conditions, the base 801 and the rotating cap 802 are connected together by a threaded connection. There is an interaction force between the rotating cap 802 and the pressing block 803, which causes the pressing block 803 to press the cloth bag 7, ensuring that the cloth bag 7 will not fall off between the base 801 and the rotating cap 802. When the counterweight plate 11 rotates, the base 801, the rotating cap 802, the pressing block 803 and the control rod 16 will rotate synchronously. Since the bottom of the cloth bag 7 is pressed between the base 801 and the rotating cap 802, the cloth bag 7 will twist synchronously. When the cloth bag 7 needs to be replaced, the operator first rotates the control lever 16, causing the control lever 16 and the rotating cap 802 to move upwards until the rotating cap 802 separates from the base 801. It should be noted that since the rack 13 and the gear 12 are in a meshing state, and the rack 13 does not move freely under the action of the electric telescopic rod 15, but only moves under the drive of the telescopic rod 15, the gear 12, the horizontal ring 901, the rigid arm 902, the round pin 903, the counterweight plate 11, and the base 801 will not rotate, thus ensuring that the rotating cap 802 can smoothly separate from the base 801. After separation, the filter bag 7 is no longer compressed by the compression block 803. The operator can then pull up the control lever 16, the cap 802, and the filter bag 7 until the bottom of the filter bag 7 moves to a position flush with the exhaust hole corresponding to the first horizontal plate 4. During this process, the outer wall of the cap 802 remains in contact with the inner surface of the filter bag 7, ensuring that dusty gas does not enter the filter bag 7. Next, the operator rotates the semicircular plate 18, causing the two semicircular plates 18 to move from a separated open state to a sealed closed state, thereby sealing the exhaust hole. The operator can then replace the filter bag 7. After replacement, first insert the control lever 16 into the filter bag 7 from top to bottom until the cap 802 reaches a position near the bottom of the filter bag 7. Then, insert the filter bag 7 into the corresponding exhaust hole on the first horizontal plate 4 using the control lever 16. Next, rotate the semicircular plate 18 to return the two semicircular plates 18 to their separated open state. Continue to extend the filter bag 7 and cap 802 to the predetermined position using the control lever 16, and then rotate the cap 802 to compress the filter bag 7 using the compression block 803, thus completing the replacement of the filter bag 7. During the above process of replacing the filter bag 7, it is not necessary to stop the dust collector, and the gas containing dust will not escape.

[0041] like Figure 4 As shown, a limiting block 17 that fits against the counterweight plate 11 is fixedly installed on the rigid arm 902 to ensure that the counterweight plate 11 remains vertical and does not tilt.

[0042] like Figure 7 and Figure 8As shown, a rotating shaft 19 penetrating the first horizontal plate 4 is fixedly installed on the semicircular plate 18, and a torsion spring connects the rotating shaft 19 and the first horizontal plate 4; a rotating arm 20 is fixedly installed on the top of the control rod 16, and a driven plate 21 interacting with the rotating arm 20 is fixedly installed on the top of the rotating shaft 19. After the operator installs the rotating cap 802 in place, the rotating arm 20 and the driven plate 21 are in a close contact state. When cleaning the filter bag 7, the disc 8 drives the control rod 16 to rotate back and forth, and the control rod 16 drives the rotating arm 20 to rotate back and forth. The thrust applied by the rotating arm 20 to the driven plate 21 and the rebound force of the torsion spring cooperate with each other, causing the rotating shaft 19 and the semicircular plate 18 to swing back and forth. During the back and forth swing of the semicircular plate 18, the filter bag 7 is patted, which further promotes the separation of the ash layer from the outer wall of the filter bag 7. Thus, the semicircular plate 18 not only seals the vent when replacing the filter bag 7, but also promotes the separation of the ash layer from the filter bag 7 during cleaning. It should be noted that when no external force is applied, the driven plate 21 and the rotating shaft 19 remain in their initial state under the action of the torsion spring, with the two semicircular plates 18 remaining in an open, separated state. When replacing the filter bag 7, the operator rotates the driven plate 21, causing the two semicircular plates 18 to come into contact with each other. The position of the two driven plates 21 is then limited by a sleeve plate that matches the shape of the driven plate 21, thus keeping the two semicircular plates 18 in a close-fitting state. The specific structure of the sleeve plate is existing technology in this field and will not be elaborated upon here.

[0043] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A combined cloth bag dust collector comprising a sealed box (1), an air inlet pipe (2) and an air outlet pipe (3) connected to the sealed box (1), characterized in that, The sealing box (1) is internally provided with a first horizontal plate (4) and a second horizontal plate (5) arranged in a vertical manner; a plurality of exhaust holes are formed in the first horizontal plate (4), and a supporting ring (6) is arranged at each exhaust hole; a cloth bag (7) is sleeved on the supporting ring (6); and a disc (8) is arranged at the bottom of the cloth bag (7); the cloth bag (7) has a first state of tension and a second state of torsion; a blanking hole (501) is formed in the second horizontal plate (5) at a position corresponding to each cloth bag (7), and an adjusting assembly (9) for adjusting the state of the cloth bag (7) is arranged at the blanking hole (501).

2. A combined baghouse according to claim 1, characterized in that A pressing ring (10) is arranged above the supporting ring (6) and used for pressing the top of the cloth bag (7).

3. The combined cloth bag dust collector according to claim 1, characterized in that, The disc (8) is fixedly provided with a counterweight plate (11) at the bottom; the adjusting assembly (9) comprises a horizontal ring (901) rotatably arranged on the second horizontal plate (5), a rigid arm (902) fixedly arranged on the inner side of the horizontal ring (901), and a round pin (903) arranged on the rigid arm (902); a vertical slot (1101) is formed in the counterweight plate (11) and matched with the round pin (903).

4. A combined cloth bag dust collector according to claim 3, wherein The horizontal ring (901) is provided with a ball (904) matched with the second horizontal plate (5) at the bottom.

5. The combined cloth bag dust collector according to claim 3, wherein A gear (12) is fixedly sleeved on the horizontal ring (901), a rack (13) engaged with the gear (12) is slidably arranged on the second horizontal plate (5); end plates (14) are fixedly arranged at the ends of the racks (13); and a telescopic rod (15) for controlling the end plates (14) is arranged on the sealing box (1).

6. A combined cloth bag dust collector according to claim 3, wherein The disc (8) comprises a base (801) fixedly connected with the counterweight plate (11) and a screw cap (802) threadedly matched with the base (801); a vertical control rod (16) is fixedly arranged on the screw cap (802); and the cloth bag (7) is located between the base (801) and the screw cap (802).

7. A combined cloth bag dust collector according to claim 6, wherein The rigid arm (902) is fixedly provided with a limiting block (17) matched with the counterweight plate (11).

8. A combined cloth bag dust collector according to claim 7, characterized in that, The bottom edge of the screw cap (802) is formed in a round shape; a wedge-shaped extrusion block (803) is slidably arranged on the inner bottom surface of the base (801) along the radial direction; and the outer side surface of the extrusion block (803) is arc-shaped and used for pressing the cloth bag (7) against the inner wall of the base (801).

9. A combined cloth bag dust collector according to claim 8, characterized in that, Two horizontal semicircular plates (18) are rotatably arranged on the lower surface of the first horizontal plate (4) at positions corresponding to each exhaust hole; the two semicircular plates (18) have an open state of mutual separation and a sealing state of mutual adhesion; and the semicircular plates (18) play a sealing role on the exhaust holes in the sealing state.

10. The combined cloth bag dust collector according to claim 9, wherein A rotating shaft (19) penetrating through the first horizontal plate (4) is fixedly arranged on the semicircular plate (18); a torsion spring is connected between the rotating shaft (19) and the first horizontal plate (4); a rotating arm (20) is fixedly arranged on the top of the control rod (16); and a driven plate (21) interacting with the rotating arm (20) is fixedly arranged on the top of the rotating shaft (19).

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