Bag type dust collector with falling filter bag intercepting device

Abstract

The invention provides a bag type dust collector provided with a falling filter bag intercepting device. The bag type dust collector comprises an upper barrel and a lower barrel which are connected in a split manner, a tubesheet is arranged at the top of the upper barrel, and is connected with a filter bag assembly through a pressing plate mechanism; an ash bin is arranged at the lower part of the lower cylinder body, and an intercepting filter screen for intercepting the filter bag assembly is horizontally assembled in the lower cylinder body; the intercepting filter screen is located above the ash bin, and a manhole opposite to the intercepting filter screen in position is formed in the side wall of the lower barrel. According to the dust collection device, the falling filter bag assembly is blocked through the arranged intercepting filter screen, so that the filter bag assembly falls on the intercepting filter screen, the collecting efficiency of the filter bag assembly is improved while the intercepting filter screen does not affect normal dust filtration work, and the situation that workers need to cope with severe working environments is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bag dust removal in gas purification, and in particular to a bag dust collector provided with a device for intercepting fallen filter bags. Background Art

[0002] Bag dust collectors are widely used in furnace flue gas purification in the steel, non-ferrous metallurgy, building materials, and chemical industries. Bag dust collectors are a type of dry dust filtering device. The structure of a bag dust collector is mainly composed of an upper cylinder, a lower cylinder, an ash bin at the bottom, a dust cleaning mechanism, and an ash discharge mechanism. The dust filter bag is usually fixed in the circular hole of the upper cylinder plate using the clamping ring provided by the filter bag, and then the open end of the dust filter bag is pressed with a pressing plate. In order to prevent the filter holes of the dust filter bag from being blocked, the material adhering to the filter bag needs to be cleaned regularly. The cleaning method is to periodically inflate the dust filter bag through a pulse solenoid valve so that the dust filter bag is repeatedly inflated and contracted, thereby shaking off the material adhering to the filter bag.

[0003] When the above operations are repeated continuously during the operation of the bag filter, there will always be dust filter bags that fall off from the matching holes of the flower plate during the expansion and contraction process, causing the flower plate holes to short-circuit, reducing the working efficiency of the dust collector, and the dust filter bags that fall into the ash bin will be buried by the materials and mixed with the dust materials. Therefore, it is necessary to collect the fallen dust filter bags. The collection method in the prior art is: first shut down the dust removal equipment, open the manhole, and the workers enter the dust removal equipment through the manhole, and search for the filter bags in the materials in the ash bin. During this operation, the workers need to endure the harsh environment of high temperature and high dust, and the search is time-consuming and laborious. In addition, due to the shutdown of the dust collector, the entire set of continuously running production equipment has to be shut down, which seriously affects the working efficiency of the entire production equipment. Therefore, the method of retrieving the fallen dust bags needs to be further improved. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the present application provides a bag dust collector provided with a device for intercepting fallen filter bags, which can collect the fallen bags promptly and quickly, thus avoiding shutdown of the entire production device.

[0005] The present application provides a bag filter equipped with a falling filter bag interception device, comprising an upper cylinder and a lower cylinder connected in a split manner; wherein:

[0006] A flower plate is provided on the top of the upper cylinder, and a filter bag assembly is connected to the flower plate through a pressure plate mechanism;

[0007] An ash bin is provided at the lower part of the lower cylinder, and an interception filter for intercepting the filter bag assembly is horizontally installed inside the lower cylinder; the interception filter is located above the ash bin, and a manhole opposite to the interception filter is opened on the side wall of the lower cylinder.

[0008] In the present invention, the interception filter screen is provided to block the falling filter bag assembly, so that the filter bag assembly falls on the interception filter screen. The interception filter screen does not affect the normal dust filtering work, and improves the collection efficiency of the filter bag assembly, avoiding the workers from having to deal with the harsh working environment. The overall bag dust collector has a stable working efficiency, and when the bag dust removal subsystem is shut down, the supporting production equipment does not need to be shut down completely.

[0009] In a specific possible implementation scheme, the filter bag assembly includes: a dust filter bag and a clamping ring circumferentially arranged at the opening of the dust filter bag;

[0010] The flower plate is provided with a circular hole matched with the clamping ring box. The clamping ring is inserted into the circular hole to stabilize the position of the dust filter bag when it is in a periodic expansion and contraction state.

[0011] In a specific embodiment, the cross section of the interception filter is the same as the internal cross section of the lower cylinder, so that the interception direction is more comprehensive.

[0012] In a specific embodiment, the interception filter screen is densely covered with a plurality of through holes, which does not affect the material shedding effect of the dust filter bag in the normal expansion and contraction state.

[0013] In a specific possible implementation manner, the interception filter is fixedly connected to the interior of the lower cylinder, or;

[0014] The interception filter is detachably fixedly connected to the interior of the lower cylinder. The fixed connection or detachable fixed connection can ensure the position stability of the interception filter in the lower cylinder.

[0015] In a specific embodiment, when the interception filter is fixedly connected to the interior of the lower cylinder,

[0016] A filter support is circumferentially arranged on the inner wall of the lower cylinder, and the intercepting filter is welded to the filter support. The welding connection has stable performance and a simple and convenient fixing method.

[0017] In a specific embodiment, when the interception filter is detachably fixedly connected to the interior of the lower cylinder,

[0018] The inner wall of the lower cylinder is circumferentially provided with a filter support, and the intercepting filter is connected to the filter support via a bolt pressure plate assembly. The bolt pressure plate assembly can better realize a detachable connection relationship.

[0019] In a specific possible implementation scheme, the bolt pressure plate assembly includes: a nut pre-buried in the filter support, a fixed pressure plate circumferentially connected to the interception filter, and a movable pressure plate pressed on the top of the interception filter;

[0020] The bolt pressure plate assembly also includes a screw rod, which passes through the movable pressure plate, the interception filter, and the fixed plate and is threadedly connected to the nut. The method of fixing the interception filter is simple and quick by connecting the bolt rod and the nut.

[0021] In a specific possible implementation manner, the interiors of the upper cylinder and the lower cylinder are connected;

[0022] When the dust filter bag freely falls along the upper cylinder to the interior of the lower cylinder, the interception filter screen intercepts the dust filter bag. The interception filter screen intercepts the dust filter bag to prevent the dust filter bag from falling into the material in the ash bin.

[0023] In a specific embodiment, the lowest point of the manhole is flush with the plane of the interception filter. By opening the manhole, the dust filter bags on the interception filter can be quickly and conveniently collected, reducing the time workers need to deal with the harsh working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a bag filter provided with a falling filter bag interception device according to an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a bolt pressure plate assembly provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the structure of the interception filter provided for this application.

[0027] Figure Number:

[0028] Upper cylinder-1, pressure plate mechanism-2, flower plate-3, dust filter bag-4, lower cylinder-5, manhole-6, interception filter-7, through hole-71, filter bracket-8, fixed pressure plate-81, movable pressure plate-82, screw member-83, ash bin-9. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] In order to facilitate understanding of the bag-type dust collector provided with a falling filter bag interception device provided in the embodiment of the present application, its application scenario is first explained. The present invention is applied to the bag dust removal subsystem in the carbon production device. The carbon production device is a continuous production method. When the bag dust removal subsystem is shut down, the entire production device must also be shut down. The dust filter bag is a dust filter component of a vulnerable part. During the periodic expansion and contraction, it often falls off from the matching holes of the flower plate and falls into the ash bin and is buried by the material. At present, when collecting the fallen dust filter bags, the filter bags are retrieved from the materials in the ash bin through the manhole, because the dust filter bags fall into the materials in the ash bin. When searching for dust filter bags in the materials, workers need to endure the harsh environment of high temperature and high dust, and the search is time-consuming and laborious. In view of this, the present application provides a bag-type dust collector provided with a falling filter bag interception device, and uses an interception filter net to intercept the dust filter bags, so that the dust filter bags can be collected quickly and conveniently, and the working environment is improved.

[0032] refer to Figure 1 and Figure 2 The bag filter provided with a bag-falling interception device provided in the embodiment of the present application comprises an upper cylinder 1 and a lower cylinder 5 connected in a split manner; the upper cylinder 1 and the lower cylinder 5 are arranged to overlap each other, and the interiors of the upper cylinder 1 and the lower cylinder 5 are in a through-connected state, the dust filter bag 4 is installed on the top of the upper cylinder 1, and the interception device is installed inside the lower cylinder 5, so that when the dust filter bag 4 is periodically inflated through the pulse solenoid valve to allow the dust filter bag 4 to swell and shrink so that the material adhering to the filter bag falls off, the material passes through the interception device and falls into the ash bin 9 at the bottom of the lower cylinder 5. When the dust filter bag 4 falls during the periodic expansion and contraction, the interception device intercepts the dust filter bag 4 to ensure that the dust filter bag 4 does not fall into the material in the ash bin 9, which is convenient for workers to hook it out through the manhole 6, and the operation of collecting the dust filter bag 4 is simple and convenient.

[0033] Specifically, a flower plate 3 is provided on the top of the upper cylinder 1, and a filter bag assembly is connected to the flower plate 3 through a pressure plate mechanism 2; the pressure plate mechanism 2 is used to fix the filter bag assembly, and the setting of the pressure plate mechanism 2 can stabilize the filter bag assembly for a long time and multiple cycles of expansion and contraction. The filter bag assembly includes: a dust filter bag 4 and a clamping ring circumferentially arranged at the opening of the dust filter bag 4; a circular hole that cooperates with the clamping ring box is opened on the flower plate 3. The dust filter bag 4 is fixed in the circular hole by the clamping ring, so that the position of the dust filter bag 4 is stable when it is subjected to periodic expansion and contraction. The dust filter bag 4 is positioned by the combination of the clamping ring and the pressure plate mechanism 2, so that the number of cycles of expansion and contraction that can be effectively worked is increased.

[0034] The lower part of the lower cylinder 5 is provided with an ash bin 9, and the lower cylinder 5 is equipped with an interception filter 7 for intercepting the filter bag assembly; the cross section of the interception filter 7 is the same as the inner cross section of the lower cylinder 5. The interception direction is more comprehensive. In addition, combined with Figure 3 As shown in the figure, the intercepting filter screen 7 is densely covered with a plurality of through holes 71. The material shedding effect of the dust filter bag 4 in the normal expansion and contraction state is not affected. By providing a plurality of through holes 71 on the intercepting filter screen 7, the dust filter bag 4 is allowed to detach the material in the periodic expansion and contraction state, and the detached material falls through the plurality of through holes 71 into the ash bin 9 for collection.

[0035] The interception filter 7 is located above the ash bin 9, and the side wall of the lower cylinder 5 is provided with a manhole 6 opposite to the interception filter 7. The interception filter 7 is opposite to the manhole 6, which can ensure that after the manhole 6 is opened, the dust filter bag 4 on the interception filter 7 can be hooked out and collected by general tools such as auxiliary long hooks, and the overall operation is simple and fast. Specifically, the lowest point of the manhole 6 is level with the plane of the interception filter 7. By opening the manhole 6, the dust filter bag 4 on the interception filter 7 can be quickly and conveniently collected, reducing the time workers need to deal with the harsh working environment.

[0036] At the same time, when the interception filter 7 is specifically fixed, the interception filter 7 is fixedly connected to the inside of the lower cylinder 5 or the interception filter 7 is detachably fixedly connected to the inside of the lower cylinder 5. The two different methods are actually installed for different application scenarios, and the fixed connection or detachable fixed connection method can ensure the position stability of the interception filter 7 in the lower cylinder 5.

[0037] For example, when the intercepting filter 7 is fixedly connected to the interior of the lower cylinder 5, a filter bracket 8 is circumferentially provided on the inner wall of the lower cylinder 5, and the intercepting filter 7 is welded to the filter bracket 8. The welding connection has stable performance and a simple and convenient fixing method.

[0038] Combination Figure 2As shown in , when the intercepting filter 7 is detachably fixedly connected to the interior of the lower cylinder 5, a filter bracket 8 is circumferentially provided on the inner wall of the lower cylinder 5, and the intercepting filter 7 is connected to the filter bracket 8 via a bolt pressure plate assembly. The use of a bolt pressure plate assembly can better achieve a detachable connection relationship. The bolt pressure plate assembly includes: a nut pre-embedded in the filter bracket 8, a fixed pressure plate 81 circumferentially connected to the intercepting filter 7, and a movable pressure plate 82 pressed on the top of the intercepting filter 7; the bolt pressure plate assembly also includes a screw member 83, and the screw member 83 passes through the movable pressure plate 82, the intercepting filter 7, and the fixed plate and is threadedly connected to the nut. The method of fixing the intercepting filter 7 is simple and quick by connecting the bolt rod and the nut.

[0039] It can be seen from the above description that the interior of the upper cylinder 1 and the lower cylinder 5 are connected, and when the dust filter bag 4 falls freely along the upper cylinder 1 to the interior of the lower cylinder 5, the interception filter 7 intercepts the dust filter bag 4. The interception filter 7 intercepts the dust filter bag 4 to prevent the dust filter bag 4 from falling into the material in the ash bin 9. Moreover, in the embodiment of the present application, whether the interception filter 7 is fixedly assembled or detachably fixedly connected, the position stability of the interception filter 7 can be guaranteed. After the interception filter 7 is installed to intercept the dust filter bag 4, it is convenient to collect the dust filter bag 4 after it falls, and it does not affect the material falling into the ash bin 9 when the dust filter bag 4 works normally.

[0040] In the present invention, the interception filter screen is provided to block the falling filter bag assembly, so that the filter bag assembly falls on the interception filter screen. The interception filter screen does not affect the normal dust filtering work, and improves the collection efficiency of the filter bag assembly, avoiding the workers from having to deal with the harsh working environment. The overall bag dust collector has a stable working efficiency, and when the bag dust removal subsystem is shut down, the entire production device does not need to be shut down.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as above, which are not provided in detail for the sake of simplicity.

[0042] In addition, to simplify the description and discussion, and in order not to obscure one or more embodiments of the present specification, known power / ground connections of other components may or may not be shown in the provided figures. In addition, the device may be shown in the form of a block diagram so as to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification are to be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0043] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A bag dust collector provided with a falling filter bag interception device, characterized in that: include: The upper cylinder and the lower cylinder are connected in a split manner; wherein, A flower plate is provided on the top of the upper cylinder, and a filter bag assembly is connected to the flower plate through a pressure plate mechanism; An ash bin is provided at the lower part of the lower cylinder, and an interception filter for intercepting the filter bag assembly is horizontally installed inside the lower cylinder; the interception filter is located above the ash bin, and a manhole opposite to the interception filter is opened on the side wall of the lower cylinder.

2. The bag dust collector provided with a falling filter bag interception device according to claim 1, characterized in that: The filter bag assembly comprises: a dust filter bag and a clamping ring circumferentially arranged at the opening of the dust filter bag; The flower plate is provided with a circular hole matched with the snap ring box.

3. The bag dust collector provided with a falling filter bag interception device according to claim 1, characterized in that: The cross section of the intercepting filter is the same as the internal cross section of the lower cylinder.

4. The bag dust collector provided with a falling filter bag interception device according to claim 3, characterized in that: The intercepting filter is densely covered with a plurality of through holes.

5. The bag filter equipped with a falling filter bag interception device according to claim 4, characterized in that: The interception filter is fixedly connected to the interior of the lower cylinder, or; The interception filter is detachably fixedly connected to the interior of the lower cylinder.

6. The bag dust collector provided with a falling filter bag interception device according to claim 5, characterized in that: When the interception filter is fixedly connected to the interior of the lower cylinder, A filter bracket is circumferentially arranged on the inner wall of the lower cylinder, and the intercepting filter is welded to the filter bracket.

7. The bag dust collector provided with a falling filter bag interception device according to claim 5, characterized in that: When the interception filter is detachably fixedly connected to the interior of the lower cylinder, A filter bracket is circumferentially arranged on the inner wall of the lower cylinder, and the intercepting filter is connected to the filter bracket via a bolt pressure plate assembly.

8. The bag dust collector provided with a falling filter bag interception device according to claim 7, characterized in that: The bolt pressure plate assembly comprises: a nut pre-buried on the filter support, a fixed pressure plate circumferentially connected to the interception filter, and a movable pressure plate pressed on the top of the interception filter; The bolt pressure plate assembly also includes a screw member, which penetrates the movable pressure plate, the interception filter, and the fixed plate and is threadedly connected to the nut.

9. The bag dust collector provided with a falling filter bag interception device according to claim 2, characterized in that: The interiors of the upper cylinder and the lower cylinder are connected; When the dust filter bag freely falls along the upper cylinder to the interior of the lower cylinder, the interception filter screen intercepts the dust filter bag.

10. The bag filter equipped with a falling filter bag interception device according to claim 9, characterized in that: The lowest point of the manhole is flush with the plane of the intercepting filter.

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