Multi-bag filter

Abstract

The utility model is suitable for the technical field of bag type dust collectors, and provides a multi-bag type filter which comprises a tank body with an opening at the top end, a tank cover is connected at the opening at the top end of the tank body, an exhaust port is arranged at the top end of the tank cover, and an air inlet is connected at the bottom end of the tank body. A hollow box of a hollow structure is fixedly connected to the lower portion of the inner wall of the tank body, an opening and closing mechanism extending to the position above the hollow box is installed in the hollow box, and the opening and closing mechanism discharges dust accumulated in the tank body. The opening and closing mechanism comprises a power unit, a moving unit and a discharging unit. The power unit is used for driving the moving unit to be opened or closed, and the moving unit in the closed state is used for closing the output end of the air inlet. By arranging the opening and closing mechanism, when a back flushing method is carried out, the problem that dust falls into the air inlet and makes contact with an air inlet valve to cause corrosion of the surface of the valve can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bag dust collectors, in particular to a multi-bag filter. Background Art

[0002] There are multiple bags inside the bag dust collector, which can effectively intercept impurities contained in the air. After long-term use, the dust and impurities intercepted on the surface of the bags can be blown off by backblowing, thereby improving the working efficiency of the bag dust collector.

[0003] In the prior art, the air inlet is generally arranged at the bottom of the device, and the exhaust port is generally arranged at the top of the device. When backblowing is performed, impurities and dust inevitably fall into the air inlet pipe and contact the outer wall of the valve in the air inlet pipe. The impurities contained in the air include but are not limited to chemical impurities such as sulfides. Such impurities can cause the valve (such as the valve core of a ball valve or the valve plate of a plate valve) to be damaged if they come into contact with the metal for a long time, resulting in insufficient air tightness after the valve is closed. Utility Model Content

[0004] The utility model provides a multi-bag filter, aiming to solve the problems mentioned in the above background technology.

[0005] The utility model is implemented as follows: a multi-bag filter comprises a tank body with an opening at the top, a tank cover is connected to the top opening of the tank body, an exhaust port is arranged at the top of the tank cover, an air inlet is connected to the bottom of the tank body, a hollow box with a hollow structure is fixedly connected to the lower part of the inner wall of the tank body, an opening and closing mechanism extending to the top of the hollow box is installed inside the hollow box, and the opening and closing mechanism discharges dust accumulated inside the tank body;

[0006] The opening and closing mechanism comprises: a power unit, a moving unit and a discharge unit;

[0007] The power unit is used to drive the moving unit to open or close, and the moving unit in the closed state is used to seal the output end of the air inlet;

[0008] When the moving unit is in a closed state, the discharge unit is opened to discharge the dust inside the tank body by back-blowing.

[0009] Preferably, a fixing plate is welded above the inner wall of the tank body, a dust bag for filtering gas is provided on the inner wall of the fixing plate, and the opening and closing mechanism is located below the dust bag.

[0010] Preferably, a hollow column aligned with the air inlet is formed at the center of the hollow box, and the power unit comprises a motor fixedly connected to the outer wall of the hollow column through a mounting frame, and a gear is connected to the output end of the motor, and the outer periphery of the gear is meshed with internal teeth;

[0011] A connecting disk extending upward is formed on the outer periphery of the inner teeth.

[0012] Preferably, the moving unit comprises a disc integrally formed on the top of the connecting disc, the top of the disc is provided with a plurality of arc grooves equidistantly arranged in the circumferential direction, and the inner wall of the arc groove is movably connected with a movable column extending upward;

[0013] The top of the movable column penetrates to the upper exterior of the hollow box, and a straight groove for the movable column to slide is provided at the contact position between the hollow box and the movable column.

[0014] Preferably, the mobile unit further comprises an opening and closing plate fixedly connected to the top of the movable column, and a dust shield is formed on the outer periphery of the opening and closing plate for shielding the top opening of the straight groove.

[0015] Preferably, a wire hole penetrating into the inner cavity of the hollow box is opened at a non-central portion of the bottom of the tank body, and a wire is connected to the power connection box of the motor, and the wire passes through the wire hole to the outside of the tank body.

[0016] Preferably, a plurality of the opening and closing plates in the initial state form a cone in a closed state, and the top of the dust shield plate is formed with an inclined arc surface having the same arc as the cone surface of the cone.

[0017] Preferably, the discharge unit comprises a dust discharge hole opened on the outside of the tank body and penetrating into the inner cavity of the tank body, the inner wall of the dust discharge hole is threadedly connected with a rubber plug, the dust discharge hole is inclined, and the high point of the dust discharge hole is located inside the tank body;

[0018] The inclined arc surface at the top of the hollow box matches the inclined surface of the dust exhaust hole.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0020] The utility model is provided with an opening and closing mechanism, so that when the back-blowing method is performed, the problem of corrosion of the valve surface caused by dust falling into the air inlet and contacting the air inlet valve can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram provided by the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure provided by the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the opening and closing mechanism provided by the utility model;

[0024] Figure 4 The utility model provides Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 It is a schematic diagram of the power unit structure provided by the utility model.

[0026] In the figure: 1. tank body; 2. tank cover; 3. exhaust port; 4. air inlet; 5. fixing plate; 6. dust bag; 7. hollow box; 8. motor; 9. connecting plate; 10. dust exhaust hole; 11. rubber plug; 12. wire; 13. opening and closing plate; 14. dust shield plate; 15. hollow column; 16. movable column; 17. straight groove; 18. arc groove; 19. inner teeth; 20. gear; 21. disc. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] The utility model embodiment provides a multi-bag filter, such as Figure 1-5 As shown, it comprises a tank body 1 with an opening at the top, a tank cover 2 is connected to the top opening of the tank body 1, an exhaust port 3 is arranged at the top of the tank cover 2, an air inlet 4 is connected to the bottom end of the tank body 1, a hollow box 7 with a hollow structure is fixedly connected to the bottom of the inner wall of the tank body 1, an opening and closing mechanism extending to the top of the hollow box 7 is installed inside the hollow box 7, and the opening and closing mechanism discharges dust accumulated inside the tank body 1;

[0030] The opening and closing mechanism includes: a power unit, a moving unit and a discharge unit;

[0031] The power unit is used to drive the moving unit to open or close, and the moving unit in the closed state is used to seal the output end of the air inlet 4;

[0032] When the moving unit is in the closed state, the discharge unit is opened to discharge the dust inside the tank body 1 by back-blowing;

[0033] A fixing plate 5 is welded on the upper inner wall of the tank body 1 , and a dust bag 6 for filtering gas is arranged on the inner wall of the fixing plate 5 , and the opening and closing mechanism is located below the dust bag 6 .

[0034] In this embodiment, air containing smoke and dust is input into the tank body 1 through the air inlet 4, and after being filtered by the dust bag 6, the air is discharged to the outside through the exhaust port 3. After long-term use, the outer wall of the dust bag 6 is stained with many impurities. When cleaning, the back-blowing method is generally used for cleaning, that is, compressed high-pressure air is output through the exhaust port 3, and the high-pressure air removes the impurities attached to the dust bag 6 through the air pressure, and falls down by its own weight;

[0035] Before back-blowing cleaning, start the power unit first, which drives the mobile unit to close, and then use the back-blowing method for cleaning. After cleaning, open the discharge unit and connect it to the dust removal pipe. The air pump sucks out the cleaned impurities through the dust removal pipe to complete the operation.

[0036] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a hollow column 15 aligned with the air inlet 4 is formed at the center of the hollow box 7, and the power unit includes a motor 8 fixedly connected to the outer wall of the hollow column 15 through a mounting frame, and a gear 20 is connected to the output end of the motor 8, and the outer periphery of the gear 20 is meshed with internal teeth 19;

[0037] The outer circumference of the inner teeth 19 is formed with a connecting plate 9 extending upward.

[0038] In this embodiment, by starting the motor 8, the motor 8 drives the gear 20 to rotate, the gear 20 drives the inner teeth 19 to rotate, and the inner teeth 19 can drive the connecting disk 9 to rotate, thereby achieving the purpose of transmitting torque to the connecting disk 9.

[0039] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the mobile unit includes a disc 21 integrally formed at the top of the connecting disc 9, and a plurality of arc grooves 18 are circumferentially and equidistantly formed at the top of the disc 21, and an upwardly extending movable column 16 is movably connected to the inner wall of the arc groove 18;

[0040] The top of the movable column 16 penetrates to the upper exterior of the hollow box 7 , and a straight groove 17 for the movable column 16 to slide is provided at the contact position between the hollow box 7 and the movable column 16 .

[0041] In this embodiment, the connection disk 9 can rotate to drive the disk 21 integrally formed on the top to rotate. When the disk 21 rotates, it drives the arc groove 18 to rotate. Since the arc groove 18 and the disk 21 are not concentrically arranged, the rotation of the arc groove 18 squeezes the outer wall of the movable column 16, and the movable column 16 moves along the straight groove 17 toward the center of the disk 21.

[0042] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the mobile unit also includes an opening and closing plate 13 fixedly connected to the top of the movable column 16 , and a dust shield 14 is formed on the outer periphery of the opening and closing plate 13 to cover the top opening of the straight groove 17 .

[0043] In this embodiment, when the multiple movable columns 16 move toward the center of the disc 21 at the same time, the movable columns 16 drive the opening and closing plates 13 to move, and the multiple opening and closing plates 13 with triangular cross sections form a conical structure to close the port of the hollow column 15. A circular opening aligned with the hollow column 15 is opened in the disc 21;

[0044] In the above process, the opening and closing plate 13 drives the dust shield plate 14 to move synchronously. Since a seal is provided at the contact position between the dust shield plate 14 and the top plane of the hollow box 7, the dust shield plate 14 can effectively prevent dust and impurities from entering the interior of the hollow box 7.

[0045] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a wire hole penetrating into the inner cavity of the hollow box 7 is opened at a non-central portion of the bottom of the tank body 1 , and a wire 12 is connected to the power connection box of the motor 8 , and the wire 12 passes through the wire hole to the outside of the tank body 1 .

[0046] In this embodiment, external electrical energy is transmitted to the motor 8 through the wire 12 to realize the operation of the motor 8, and the inner wall of the wire hole should be provided with a seal. During the process of contact and compression with the wire 12, the seal can effectively form a sealing effect to prevent dust from entering the hollow box 7.

[0047] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a plurality of opening and closing plates 13 in the initial state form a closed cone, and the top of the dust shield plate 14 is formed with an inclined arc surface with the same arc as the cone surface of the cone;

[0048] The discharge unit includes a dust discharge hole 10 opened outside the tank body 1 and penetrating into the inner cavity of the tank body 1 . The inner wall of the dust discharge hole 10 is threadedly connected with a rubber plug 11 . The dust discharge hole 10 is inclined, and the highest point of the dust discharge hole 10 is located inside the tank body 1 .

[0049] In this embodiment, after the back-flushing cleaning is completed, the multiple opening and closing plates 13 are still in a closed state. The rubber plug 11 is unscrewed, and the threaded connection end of the dust removal pipe is threadedly connected to the dust discharge hole 10, and then the other end of the dust removal pipe is connected to the air pump. The suction force generated by the air pump sucks out the cleaned dust;

[0050] During the suction process, since the multiple closed opening and closing plates 13 and the dust shielding plates 14 on their peripheries are all in a closed state, the dust will move along the arc-shaped inclined surface of the surface, pass through the inclined surface at the top of the hollow box 7, and then be discharged from the dust discharge hole 10. This inclined structural setting can reduce the resistance encountered by dust and impurities during the movement process, thereby improving the dust and impurity discharge efficiency;

[0051] After the dust and impurities are discharged in the above manner, it can be avoided that the dust falls into the inside of the air intake duct during the back-flushing cleaning and contacts with the valve inside the air intake duct, thereby causing corrosion on the valve surface.

[0052] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0053] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0054] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0055] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A multi-bag filter, comprising a tank body (1) with an opening at the top, a tank cover (2) connected to the top opening of the tank body (1), an exhaust port (3) provided at the top of the tank cover (2), and an air inlet (4) connected to the bottom of the tank body (1), characterized in that: A hollow box (7) with a hollow structure is fixedly connected to the lower part of the inner wall of the tank body (1), and an opening and closing mechanism extending to the top of the hollow box (7) is installed inside the hollow box (7), and the opening and closing mechanism discharges dust accumulated inside the tank body (1); The opening and closing mechanism comprises: a power unit, a moving unit and a discharge unit; The power unit is used to drive the moving unit to open or close, and the moving unit in the closed state is used to seal the output end of the air inlet (4); When the moving unit is in a closed state, the discharge unit is opened to discharge the dust inside the tank body (1) by back-blowing.

2. A multi-bag filter as claimed in claim 1, characterized in that: A fixing plate (5) is welded above the inner wall of the tank body (1), a dust removal bag (6) for filtering gas is arranged on the inner wall of the fixing plate (5), and the opening and closing mechanism is located below the dust removal bag (6).

3. A multi-bag filter as claimed in claim 1, characterized in that: A hollow column (15) aligned with the air inlet (4) is formed at the center of the hollow box (7); the power unit comprises a motor (8) fixedly connected to the outer wall of the hollow column (15) via a mounting frame; an output end of the motor (8) is connected to a gear (20); an outer periphery of the gear (20) is meshed with internal teeth (19); The outer periphery of the inner tooth (19) is formed with a connecting disk (9) extending upward.

4. A multi-bag filter as claimed in claim 3, characterized in that: The moving unit comprises a disc (21) integrally formed on the top of the connecting disc (9), the top of the disc (21) being provided with a plurality of arc grooves (18) equidistantly arranged in the circumferential direction, and the inner wall of the arc groove (18) being movably connected to a movable column (16) extending upward; The top of the movable column (16) penetrates to the upper exterior of the hollow box (7), and a straight groove (17) for the movable column (16) to slide is provided at the contact position between the hollow box (7) and the movable column (16).

5. A multi-bag filter as claimed in claim 4, characterized in that: The mobile unit also includes an opening and closing plate (13) fixedly connected to the top of the movable column (16), and a dust shield (14) is formed on the outer periphery of the opening and closing plate (13) for shielding the top opening of the straight groove (17).

6. A multi-bag filter as claimed in claim 3, characterized in that: A wire hole is provided at a non-central portion of the bottom of the tank body (1) and penetrates into the inner cavity of the hollow box (7); a wire (12) is connected to the power connection box of the motor (8); and the wire (12) penetrates through the wire hole to the outside of the tank body (1).

7. A multi-bag filter as claimed in claim 5, characterized in that: A plurality of the opening and closing plates (13) in an initial state form a closed cone, and the top of the dust shield plate (14) is formed with an inclined arc surface having the same arc as the cone surface of the cone.

8. A multi-bag filter as claimed in claim 1, characterized in that: The discharge unit comprises a dust discharge hole (10) which is opened on the outside of the tank body (1) and penetrates into the inner cavity of the tank body (1); the inner wall of the dust discharge hole (10) is threadedly connected with a rubber plug (11); the dust discharge hole (10) is arranged in an inclined manner, and the highest point of the dust discharge hole (10) is located inside the tank body (1); The inclined arc surface at the top of the hollow box (7) matches the inclined surface of the dust discharge hole (10).

Images