Inverted cloth bag dust removal device

Abstract

The utility model discloses an upside-down hanging type cloth bag dust removal device which comprises an outer bag body and an inner bag body, an air inlet is formed in the bottom of the inner bag body, and a first air outlet is formed in the top of the inner bag body; the bottom of the outer bag body is connected with the outer wall of the bottom of the inner bag body, a second air outlet is formed in the top of the outer bag body, a second opening and closing assembly is arranged at the second air outlet, when the second opening and closing assembly opens the second air outlet, the first opening and closing assembly closes the first air outlet, and air filtered by the inner bag body enters the space between the outer bag body and the inner bag body; and when the second opening and closing assembly closes the second air outlet, the first opening and closing assembly opens the first air outlet, so that at least part of air in the inner bag body enters the cavity between the outer bag body and the inner bag body through the first air outlet. According to the embodiment, the two layers of dust collecting cloth bags are used for filtering in a sleeved combination manner, so that the dust collecting device can work in environments with various airflow environments, dust densities and filtering pressure intensities.

Description

Technical Field

[0001] The utility model relates to the technical field of bag dust removal devices, in particular to an inverted bag dust removal device. Background Art

[0002] The existing seed drying air circulation system is usually equipped with an ash collection chamber, which is used to pass the dust-carrying airflow with residual heat after the seeds are dried in the drying tower into the ash collection chamber, filter the dust from the residual heat airflow, deposit the dust, and transport the clean airflow with heat and after filtering to the environment where the heat pump unit is located, so as to circulate air energy and ensure a clean working environment that meets environmental protection and safety standards. Usually, multiple inverted dust removal bags are distributed on the upper part of the dust collection chamber, so that the dust-carrying airflow in the ash collection chamber enters the inverted dust removal bags.

[0003] In bag dust removal operations, the bags are usually in a single columnar layer with the other end of the bag closed, allowing airflow to enter from the air inlet at one end of the bag and filter the dust in the airflow within a certain mesh range through the pores on the surface of the bag. Single-layer dust removal bags can meet the work requirements of small volume and short operation time involved in the drying system.

[0004] However, for long working hours and high airflow filtration requirements, the filtering effect of a single-layer dust bag will become poor over time due to the clogging of the filter pores by the surface adhesion of dust. In addition, when the airflow pressure entering the dust bag is low and the airflow carrying dust is relatively humid, the dust is easily adhered to the surface of the dust bag after being captured by the single-layer dust bag, resulting in poor dust removal and filtration efficiency.

[0005] Therefore, the existing bag dust collector has technical problems in actual working process, such as single working scene and poor dust collection and filtration effect during long-term working. Utility Model Content

[0006] The utility model aims to provide an inverted bag dust removal device to solve the technical problem of poor dust removal efficiency in the prior art due to the fact that the existing bag dust removal devices usually adopt a single bag body.

[0007] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0008] An inverted bag dust removal device, comprising:

[0009] An outer bag body and an inner bag body sleeved in the outer bag body;

[0010] The bottom of the inner bag body is open to form an air inlet, and the top of the inner bag body forms a first air outlet. A first opening and closing component is provided at the first air outlet, and the first opening and closing component is used to open and close the first air outlet;

[0011] The bottom of the outer bag body is connected to the bottom outer wall of the inner bag body, and the top of the outer bag body forms a second air outlet, and a second opening and closing component is provided at the second air outlet, and the second opening and closing component is used to open and close the second air outlet;

[0012] Wherein, when the second opening and closing component opens the second air outlet, the first opening and closing component closes the first air outlet, and the gas filtered by the inner bag body enters the cavity between the outer bag body and the inner bag body;

[0013] When the second opening and closing component closes the second air outlet, the first opening and closing component opens the first air outlet, so that the gas in the inner bag body at least partially enters the cavity between the outer bag body and the inner bag body through the first air outlet.

[0014] As a preferred solution of the utility model, the diameter of the first air outlet is opened by the first opening and closing component to adjust the ratio of the gas in the inner bag body entering the cavity through the first air outlet and filtering through the inner bag body into the cavity.

[0015] As a preferred solution of the utility model, the first opening and closing assembly includes a tube seat, a column cavity is arranged in the tube seat along the axial direction of the tube seat, a guide column is arranged in the column cavity, and a cone cavity is arranged below the column cavity;

[0016] A plurality of connecting rods are evenly distributed on the circumferential edge of the bottom of the guide column, the connecting rods are movably connected to the guide column, and the connecting rods are provided with penetrating guide grooves along the length direction of the rods;

[0017] A plurality of slots are circumferentially arranged at the bottom of the tube seat, and the plurality of slots correspond to the plurality of connecting rods one by one. A movable bolt is arranged in the slot, and the movable bolt is inserted into the through guide slot.

[0018] As a preferred solution of the utility model, multiple connecting rods are evenly distributed on the outer wall edge of the first air outlet, and the guide column moves along the axial direction of the column cavity, so that the connecting rods rotate with the movable bolt as a fulcrum, and multiple connecting rods are unfolded in an umbrella shape to open the first air outlet or multiple connecting rods are retracted into the conical cavity to close the first air outlet.

[0019] As a preferred solution of the utility model, a lifting device is arranged on the upper part of the outer bag body, and the lifting device is used to pull the outer bag body upward or downward to adjust the tightness of the surface of the outer bag body.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model realizes continuous filtering and cleaning of the airflow carrying dust by overlapping two dust removal bags, and can complete the replacement of the airflow filtering cavity by alternately opening and closing the tops of the two dust removal bags, and can complete the self-cleaning of the dust removal bags to avoid the adhesion of dust on the surface of the dust removal bags, and can thus adapt to airflows of different pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the outer bag body of an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the inner bag body of an embodiment of the utility model;

[0026] Figure 4 This is a schematic structural diagram of a first opening and closing assembly according to an embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the internal structure of a tube holder according to an embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the connecting rod structure of an embodiment of the utility model.

[0029] The numbers in the figure represent the following:

[0030] 10-outer bag body; 11-second air outlet; 20-inner bag body; 21-air inlet; 22-first air outlet; 30-first opening and closing assembly; 31-tube seat; 32-column cavity; 33-guide column; 34-conical cavity; 35-connecting rod; 36-through guide groove; 37-slot; 38-movable bolt; 40-second opening and closing assembly; 50-lifting device. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1 and Figure 6 As shown, the utility model provides an inverted bag dust removal device, comprising:

[0033] An outer bag body 10 and an inner bag body 20 sleeved inside the outer bag body 10;

[0034] The bottom of the inner bag body 20 is opened to form an air inlet 21, and the top of the inner bag body 20 forms a first air outlet 22. A first opening and closing component 30 is provided at the first air outlet 22, and the first opening and closing component 30 is used to open and close the first air outlet 22;

[0035] The bottom of the outer bag body 10 is connected to the bottom outer wall of the inner bag body 20 , and the top of the outer bag body 10 forms a second air outlet 11 , at which a second opening and closing component 40 is provided, and the second opening and closing component 40 is used to open and close the second air outlet 11 .

[0036] In this embodiment, two layers of dust removal bags are used in a set combination for filtering, so that it can work in a variety of airflow environments, dust densities and filtering pressure environments, including:

[0037] In a general working environment:

[0038] When the second opening and closing assembly 40 opens the second air outlet 11 , the first opening and closing assembly 30 closes the first air outlet 22 , and the gas filtered by the inner bag body 20 enters the cavity between the outer bag body 10 and the inner bag body 20 .

[0039] The airflow entering the cavity is the airflow filtered by the inner bag body 20. When the sufficient filtering conditions of the outer bag body 10 are not met and only partial filtering can be performed, the airflow entering the cavity will be discharged from the first air outlet 22 at the top of the outer bag body 10 along the length direction of the outer bag body 10, and part of the airflow entering the cavity will be filtered for the second time by the outer bag body 10.

[0040] The cavity is equivalent to providing a guide channel for the filtered airflow. For equipment that needs to centrally utilize the filtered airflow, a pipeline can be connected to the top of the outer bag body 10.

[0041] When repeated filtering or multiple filtering is required:

[0042] When the second opening and closing assembly 40 closes the second air outlet 11, the first opening and closing assembly 30 opens the first air outlet 22, so that at least part of the gas in the inner bag body 20 enters the cavity between the outer bag body 10 and the inner bag body 20 through the first air outlet 22;

[0043] At this time, the first air outlet 22 is not fully open (the size of the opening and closing aperture can be determined according to the dust density in the airflow, the smaller the dust density in the airflow, the smaller the opening and closing aperture, and vice versa). Since the top of the inner bag body 20 is not fully open (smaller than the set diameter of the inner bag body 20), the inner bag body 20 is a cone as a whole, and the interior of the inner bag body 20 is a conical cavity. The airflow entering the inner bag body 20 will increase the adhesion between dust as the aperture of the inner bag body 20 gradually decreases, thereby causing the dust to fall from the air inlet, and then the airflow entering the cavity through the first air outlet 22 will be filtered by the outer bag body 10. Since the volume of the cavity is smaller than that of the inner bag body 20, its radial width is smaller, thereby increasing the probability of dust adhesion in the airflow.

[0044] At the same time, due to the closure of the second air outlet 22, after closing the second air outlet 22 and opening the first air outlet 11, the airflow needs to pass from the inner top of the outer bag body 10 (cavity) to the inner bottom, and this process is conducive to the deposition of dust.

[0045] In this embodiment, the bottom of the outer bag body 10 is sealed and connected to the bottom of the inner bag body 20 for depositing dust. Of course, based on the dust collection consideration, the bottom of the outer bag body 10 can also be connected to a dust collection device to clean the dust deposited in the cavity. Specific design and description are not given in this embodiment.

[0046] Considering that the air flow humidity in the working environment is relatively high and dust is easily adhered to the surface of the dust removal bag, the second air outlet 22 can be intermittently controlled to be closed, and the first air outlet 11 can be opened to achieve self-cleaning of the surface of the inner bag body 10. This is mainly because at this time, the air flow acts on the surface of the inner bag body 20 upward along the surface of the inner bag body 20, so that the dust can be taken away from the inner surface of the inner bag body 20 and gathered and stuck at the first air outlet 11 to form larger dust particles.

[0047] Therefore, in this process, the first opening and closing assembly 30 is used to open the aperture of the first air outlet 22 to adjust the ratio of the gas in the inner bag body 20 entering the cavity through the first air outlet 22 and entering the cavity through the inner bag body 20 filtration.

[0048] In this embodiment, the first opening and closing assembly 30 and the second opening and closing assembly 40 have the same structure, and may adopt, for example, a shutter structure or a structure in which a plurality of clamping claws can be brought together and separated from each other, or the first opening and closing assembly 30 and the second opening and closing assembly 40 are both a valve structure, and both can realize the opening and closing of the first air outlet 11 and the second air outlet 22;

[0049] In order to more clearly illustrate the above implementation, this implementation method provides a specific embodiment of the first opening and closing component:

[0050] 30 includes a tube seat 31, a column cavity 32 is arranged in the tube seat 31 along the axial direction of the tube seat 31, a guide column 33 is arranged in the column cavity 32, and a cone cavity 34 is arranged below the column cavity 32. A plurality of connecting rods 35 are evenly distributed on the circumferential edge of the bottom of the guide column 33, the connecting rods 35 are movably connected to the guide column 33, and a through guide groove 36 is arranged on the rod body of the connecting rod 35 along the length direction of the rod body. A plurality of slots 37 are arranged on the circumference of the bottom of the tube seat 31, and the plurality of slots 37 correspond to the plurality of connecting rods 35 one by one, and a movable bolt 38 is arranged in the slot 37, and the movable bolt 38 is inserted into the through guide groove 36.

[0051] Among them, multiple connecting rods 35 are evenly distributed on the outer wall edge of the first air outlet 22, and the guide column 33 moves axially along the column cavity 32, so that the connecting rods 35 rotate with the movable bolt 38 as a fulcrum. Multiple connecting rods 35 are unfolded in an umbrella shape to open the first air outlet 22, or multiple connecting rods 35 are retracted into the conical cavity 34 to close the first air outlet 22.

[0052] Furthermore, in order to ensure that the airflow is filled in the outer bag body 10 or the inner bag body 20, and then the airflow is filtered through the mesh pores of the bag body, the surface of the bag body is usually stretched straight or the airflow can be stretched straight with very little pressure. Therefore, the existing dust removal bag is usually in a stretched state.

[0053] In the present application, a lifting device 50 is provided on the upper part of the outer bag body 10, and the lifting device 50 is used to pull the outer bag body 10 upward or downward to adjust the tightness of the surface of the outer bag body 10. Its purpose is to intermittently open and close the first air outlet 11 within a period of time, so that a pulse airflow can be generated in the outer bag body 10. When the lifting device 50, specifically a pneumatic cylinder or a hydraulic cylinder, makes the outer bag body 10 not in a tight state, the pulse airflow acts on the outer bag body 10 and can cause the outer bag body 10 to fluctuate, thereby shaking off the dust adhering to the inner surface of the outer bag body 10.

[0054] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. An inverted bag dust removal device, characterized in that: include: An outer bag body (10) and an inner bag body (20) sleeved inside the outer bag body (10); The bottom of the inner bag body (20) is open to form an air inlet (21), and the top of the inner bag body (20) forms a first air outlet (22), and a first opening and closing component (30) is provided at the first air outlet (22), and the first opening and closing component (30) is used to open and close the first air outlet (22); The bottom of the outer bag body (10) is connected to the bottom outer wall of the inner bag body (20), and the top of the outer bag body (10) forms a second air outlet (11). A second opening and closing component (40) is provided at the second air outlet (11), and the second opening and closing component (40) is used to open and close the second air outlet (11); When the second opening and closing component (40) opens the second air outlet (11), the first opening and closing component (30) closes the first air outlet (22), and the gas filtered by the inner bag body (20) enters the cavity between the outer bag body (10) and the inner bag body (20); When the second opening and closing component (40) closes the second air outlet (11), the first opening and closing component (30) opens the first air outlet (22), so that at least part of the gas in the inner bag body (20) enters the cavity between the outer bag body (10) and the inner bag body (20) through the first air outlet (22).

2. The inverted bag dust removal device according to claim 1 is characterized in that: The first opening and closing component (30) is used to open the aperture of the first air outlet (22), thereby adjusting the ratio of the gas in the inner bag body (20) entering the cavity through the first air outlet (22) and entering the cavity after being filtered through the inner bag body (20).

3. The inverted bag dust removal device according to claim 1 is characterized in that: The first opening and closing assembly (30) comprises a tube seat (31), a column cavity (32) is arranged in the tube seat (31) along the axial direction of the tube seat (31), a guide column (33) is arranged in the column cavity (32), and a cone cavity (34) is arranged below the column cavity (32); A plurality of connecting rods (35) are evenly distributed on the circumferential edge of the bottom of the guide column (33), the connecting rods (35) are movably connected to the guide column (33), and a penetrating guide groove (36) is arranged on the rod body of the connecting rod (35) along the length direction of the rod body; The bottom of the pipe seat (31) is circumferentially provided with a plurality of slots (37), the plurality of slots (37) corresponding one-to-one to the plurality of connecting rods (35), and a movable bolt (38) is provided in the slot (37), and the movable bolt (38) is inserted into the through guide groove (36).

4. The inverted bag dust removal device according to claim 3 is characterized in that: The plurality of connecting rods (35) are evenly distributed on the outer wall edge of the first air outlet (22), and the guide column (33) moves axially along the column cavity (32), so that the connecting rod (35) rotates with the movable bolt (38) as a fulcrum, and the plurality of connecting rods (35) are spread out in an umbrella shape to open the first air outlet (22), or the plurality of connecting rods (35) are gathered into the conical cavity (34) to close the first air outlet (22).

5. The inverted bag dust removal device according to claim 1, characterized in that: A lifting device (50) is provided on the upper part of the outer bag body (10), and the lifting device (50) is used to pull the outer bag body (10) upward or downward to adjust the tightness of the surface of the outer bag body (10).

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