Pulse dust collector

Abstract

The utility model discloses a pulse dust collector, which relates to the technical field of pulse dust collectors and comprises a dust collector main body and a pulse component, the dust collector main body consists of a dust collection box, a back-flushing bin, a dust collection bin, a spoiler and an air inlet, and the pulse component is used for deashing a filter bag; the pulse assembly comprises an air source unit and a flow dividing unit. The air source unit is used for providing high-pressure air flow for ash removal operation of the filter bag; and the shunting unit is used for guiding high-pressure airflow of the air source unit to different heights in the filter bag, so that synchronous blowing operation on different height positions of the filter bag is realized. Compared with a traditional structure that blowing is carried out only from the uppermost part of the filter bag, the flow cylinder and the plurality of air guide blowing pipes with different heights are arranged, so that high-pressure air flow is guided to different heights of the filter bag through the plurality of air guide blowing pipes with different heights, the bottom of the filter bag can be fully cleaned, and the cleaning efficiency is improved. And the backwashing effect of the dust remover is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulse dust collectors, in particular to a pulse dust collector. Background Art

[0002] The pulse dust collector is a new type of high-efficiency pulse dust collector improved on the basis of the bag dust collector. The working principle of the pulse dust collector is as follows:

[0003] When the dust-laden gas enters the dust collector from the air inlet, it first hits the inclined plate and baffle between the air inlet and outlet, and then the airflow turns to flow into the ash hopper. At the same time, the airflow speed slows down. Due to inertia, the coarse dust particles in the gas flow directly into the ash hopper, which plays the role of pre-dust collection.

[0004] The airflow entering the ash hopper then turns upward and passes through the filter bag with a metal frame inside. The dust is captured on the outer surface of the filter bag. The purified gas enters the clean room above the filter bag room and is collected at the air outlet for discharge.

[0005] During the purification process of dust-laden gas passing through the filter bag, more and more dust is accumulated on the filter bag with the increase of time, which increases the resistance of the filter bag and causes the processing air volume to gradually decrease. For normal operation, the resistance must be controlled within a certain range (140--170 mm water column). Once the range is exceeded, the filter bag must be cleaned. During cleaning, the pulse controller sequentially triggers each control valve to open the pulse valve, and the compressed air in the air bag is sprayed from the holes of the injection pipe through the venturi tube into the corresponding filter bag. The filter bag expands sharply in an instant, causing the dust accumulated on the surface of the filter bag to fall off, and the filter bag returns to its initial state. The removed dust falls into the ash hopper and is discharged from the machine body through the ash discharge system. In this way, the dust accumulated on the filter bag is periodically pulse-blasted and cleaned, so that the purified gas can pass normally and the dust removal system can be guaranteed to operate.

[0006] During the actual operation of the pulse dust collector, the nozzle for pulse spraying on the filter bag is located directly above the filter bag. The high-pressure airflow sprayed from the nozzle of the nozzle will slowly diffuse downward. As a result, when the filter bag is at a high height, the pressure of the airflow is relatively low when it reaches the bottom of the filter bag, so the cleaning effect on the bottom of the filter bag is relatively weak. Based on this, a pulse dust collector is provided. Utility Model Content

[0007] The purpose of the utility model is to provide a pulse dust collector in order to solve the above-mentioned background problems.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulse dust collector, comprising a dust collector body consisting of a dust collecting box, a recoil bin, a dust collecting box, a baffle, and an air inlet, wherein the recoil bin and the dust collecting box are sequentially formed on the inner side of the dust collecting box from top to bottom, the air inlet is fixed to the outer side of the dust collecting box and is communicated with the dust collecting box, a filter bag penetrating into the dust collecting box is installed inside the recoil bin, the baffle is fixed to the bottom of the inner wall of the dust collecting box and is distributed between the filter bag and the air inlet port, a fan is installed on the top of the dust collecting box away from the air inlet, the input end of the fan is communicated with the inner cavity of the recoil bin, a bag cage frame is clamped on the inner side of the filter bag, and the bag cage frame is used to form a support for the inner side of the filter bag;

[0009] A pulse assembly is distributed at one end of the outside of the dust removal box and the inside of the recoil bin, and the pulse assembly is used to clean the filter bag;

[0010] The pulse assembly includes a gas source unit and a flow diversion unit;

[0011] The air source unit is used to provide high-pressure airflow for the dust cleaning operation of the filter bag;

[0012] The flow diversion unit is used to guide the high-pressure airflow of the air source unit to different heights inside the filter bag, thereby realizing synchronous blowing operations on different height positions of the filter bag.

[0013] As a further solution of the utility model: the air source unit includes an air bag, a backflush pipe, a connector, and a blowing head;

[0014] The air bag is installed at one end of the outside of the dust removal box, and the output end of the air bag passes through a plurality of pulse solenoid valves to one end of the inside of the recoil bin;

[0015] The back-blowing pipe is installed at the output end of the pulse solenoid valve connected to the air bag and is distributed in parallel above a row of filter bags. A plurality of the blowing heads are provided and evenly fixed at the bottom of the back-blowing pipe. The plurality of the blowing heads correspond to the positions of the plurality of filter bags in a row of filter bags one by one.

[0016] The blowing head is installed on the other end of the inner wall of the recoil bin, and the other end of the recoil pipe is connected and fixed to the blowing head by bolts.

[0017] As a further solution of the utility model: the diversion unit includes a connecting pipe, a diversion tube, a connecting head, a 7-type fixing frame, and an air guide blowing pipe;

[0018] The 7-type fixing frame is provided in multiple pieces and is fixed to the outside of the diversion tube in a circumferential manner, and the bottom of the 7-type fixing frame is fixed to the top edge of the bag cage frame;

[0019] The connector is fixed on the top of the diverter tube, and the connector is connected to the spray head through a connecting pipe;

[0020] There are multiple air-guiding blowing pipes, which are evenly fixed at the bottom of the diverter tube and communicated with the inner cavity of the diverter tube. The bottom of the air-guiding blowing pipe extends to the inner side of the bag cage frame, so as to guide the high-pressure airflow to the inner side of the filter bag.

[0021] As a further solution of the utility model: the heights of the plurality of air-guiding blowing pipes are increased successively, and the bottom of the highest air-guiding blowing pipe is close to but does not touch the bottom of the bag cage frame.

[0022] As a further solution of the utility model: there is a gap between the bottom of the diverter tube and the top of the bag cage frame, so as to prevent the diverter tube from blocking the filtered airflow.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] By setting up a pulse component, the overall efficient cleaning of the filter bag can be achieved. Compared with the traditional structure that only blows from the top of the filter bag, the high-pressure airflow is guided to different heights of the filter bag through multiple air blowing pipes at different heights. The bottom of the filter bag can also be fully cleaned, further improving the backwashing effect of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the internal structure of the dust removal box of the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the recoil bin of the utility model;

[0027] Figure 3 It is a schematic diagram of the disassembly of the utility model;

[0028] Figure 4 It is a schematic diagram of the connection between some parts of the pulse assembly and the bag cage frame of the utility model;

[0029] Figure 5 It is a schematic diagram of the disassembly of some parts of the pulse assembly and the bag cage frame of the utility model;

[0030] Figure 6 It is a structural cross-sectional view of the flow divider and the air guide blowing pipe of the utility model.

[0031] In the figure: 1. Dust collector body; 101. Dust removal box; 102. Recoil chamber; 103. Dust removal chamber; 104. Baffle; 105. Air inlet; 2. Filter bag; 3. Fan; 4. Pulse assembly; 401. Air bag; 402. Recoil pipe; 403. Connector; 404. Blowing head; 405. Connecting pipe; 406. Diverter tube; 407. Connecting head; 408. Type 7 fixing frame; 409. Air guide blowing pipe; 5. Bag cage frame. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figures 1 to 6 In the embodiment of the utility model, a pulse dust collector includes a dust collector body 1 composed of a dust removal box 101, a recoil bin 102, a dust removal bin 103, a baffle 104, and an air inlet 105. The recoil bin 102 and the dust removal bin 103 are sequentially formed on the inner side of the dust removal box 101 from top to bottom. The air inlet 105 is fixed to the outer side of the dust removal box 101 and is connected to the dust removal bin 103. A filter bag 2 that penetrates into the dust removal bin 103 is installed inside the recoil bin 102. The baffle 104 is fixed to the bottom of the inner wall of the dust removal bin 103 and is distributed between the filter bag 2 and the air inlet 105 port. A fan 3 is installed on the side of the top of the dust removal box 101 away from the air inlet 105. The input end of the fan 3 is connected to the inner cavity of the recoil bin 102. A bag cage frame 5 is clamped on the inner side of the filter bag 2, and the bag cage frame 5 is used to form a support for the inner side of the filter bag 2.

[0034] A pulse assembly 4 is distributed at one end of the outer portion of the dust removal box 101 and the inner side of the recoil chamber 102, and the pulse assembly 4 is used to perform dust cleaning operation on the filter bag 2;

[0035] The pulse assembly 4 includes a gas source unit and a flow distribution unit;

[0036] The air source unit is used to provide high-pressure airflow for the dust cleaning operation of the filter bag 2;

[0037] The flow distribution unit is used to guide the high-pressure airflow of the air source unit to different heights inside the filter bag 2, so as to realize the synchronous blowing operation on different height positions of the filter bag 2;

[0038] The air source unit includes an air bag 401, a backflush pipe 402, a connecting piece 403, and a blowing head 404;

[0039] The air bag 401 is installed at one end of the outside of the dust removal box 101, and the output end of the air bag 401 passes through a plurality of pulse solenoid valves to one end of the inside of the recoil chamber 102;

[0040] The back-blowing pipe 402 is installed at the output end of the pulse electromagnetic valve connected to the air bag 401 and is distributed in parallel above a row of filter bags 2. A plurality of blowing heads 404 are provided and evenly fixed at the bottom of the back-blowing pipe 402. The plurality of blowing heads 404 correspond to the positions of the plurality of filter bags 2 in a row of filter bags 2 one by one.

[0041] The blowing head 404 is installed at the other end of the inner wall of the recoil chamber 102, and the other end of the recoil pipe 402 is connected and fixed to the blowing head 404 by bolts;

[0042] The flow distribution unit includes a connecting pipe 405, a flow distribution tube 406, a connecting head 407, a 7-type fixing frame 408, and an air guide blowing pipe 409;

[0043] A plurality of 7-type fixing frames 408 are provided and are circumferentially fixed to the outside of the diversion tube 406, and the bottom of the 7-type fixing frame 408 is fixed to the top edge of the bag cage frame 5;

[0044] The connector 407 is fixed to the top of the diverter tube 406, and the connector 407 is connected to the blowing head 404 through the connecting pipe 405;

[0045] A plurality of air guide blowing pipes 409 are provided, and the plurality of air guide blowing pipes 409 are evenly fixed at the bottom of the diverter tube 406 and communicate with the inner cavity of the diverter tube 406. The bottom of the air guide blowing pipe 409 extends to the inner side of the bag cage frame 5, and is used to guide the high-pressure airflow to the inner side of the filter bag 2;

[0046] The heights of the plurality of air-guiding blowing pipes 409 are increased in sequence, and the bottom of the highest air-guiding blowing pipe 409 is close to but does not touch the bottom of the bag cage frame 5 .

[0047] In this embodiment, when the filter bag 2 needs to be backwashed and cleaned, the operation steps are as follows:

[0048] During dust cleaning, the pulse controller sequentially triggers each control valve to open the pulse solenoid valve, and the compressed air in the air bag 401 is sprayed into each corresponding filter bag 2 through the backblowing pipe 402 and the spray head 404 at the bottom thereof. During this process, the high-pressure airflow enters the inside of the diverter tube 406 through the spray head 404, the connecting pipe 405, and the connecting head 407, and then flows along the air-guiding spray pipes 409 of different heights to spray to different heights of the filter bag 2, so that the entire filter bag 2 expands sharply instantly, so that the dust accumulated on the surface of the filter bag 2 falls off, and the filter bag 2 returns to its initial state;

[0049] Compared with the traditional structure that only sprays from the top of the filter bag 2, the high-pressure airflow is guided to different heights of the filter bag 2 through multiple air-guiding blowing pipes 409 at different heights, and the bottom of the filter bag 2 can also be fully cleaned, further improving the backwashing effect of the dust collector.

[0050] Please refer to Figures 1 to 5 There is a gap between the bottom of the diverter tube 406 and the top of the bag cage frame 5 to prevent the diverter tube 406 from blocking the filtered airflow.

[0051] In this embodiment: this structure ensures normal filtering and dust removal of dust-laden air. At the same time, when the filter bag 2 needs to be replaced, the connecting pipe 405 and the blowing head 404 can be separated first, and then the recoil pipe 402 can be removed. Finally, the bag cage frame 5 and the diverter pipe 406, the connecting head 407, the 7-type fixing frame 408, and the air guide blowing pipe 509 are removed as a whole. After that, the filter bag 2 can be replaced, and then the reverse operation can be performed. Compared with the traditional dust collector filter bag replacement steps, there is only one more step of separating and installing the connecting pipe 405 and the blowing head 404, and the overall operation is also relatively simple and convenient.

[0052] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pulse dust collector, comprising a dust collector body (1) consisting of a dust removal box (101), a recoil bin (102), a dust removal bin (103), a baffle (104), and an air inlet (105), wherein the recoil bin (102) and the dust removal bin (103) are sequentially formed on the inner side of the dust removal box (101) from top to bottom, and the air inlet (105) is fixed to one side of the outside of the dust removal box (101) and is in communication with the dust removal bin (103). The recoil bin (102) is internally installed with a filter bag (2) penetrating into the dust removal bin (103); the baffle (104) is fixed to the bottom of the inner wall of the dust removal bin (103) and is distributed between the filter bag (2) and the air inlet (105); a fan (3) is installed on the top of the dust removal box (101) away from the air inlet (105); the input end of the fan (3) is in conduction with the inner cavity of the recoil bin (102), and the characteristics are as follows: A bag cage frame (5) is clamped on the inner side of the filter bag (2), and the bag cage frame (5) is used to support the inner side of the filter bag (2); A pulse component (4) is distributed at one end of the outside of the dust removal box (101) and the inside of the recoil chamber (102), and the pulse component (4) is used to perform a dust cleaning operation on the filter bag (2); The pulse assembly (4) comprises a gas source unit and a flow distribution unit; The air source unit is used to provide a high-pressure airflow for the dust cleaning operation of the filter bag (2); The flow distribution unit is used to guide the high-pressure airflow of the air source unit to different heights inside the filter bag (2), thereby realizing synchronous blowing operations at different height positions of the filter bag (2).

2. A pulse dust collector according to claim 1, characterized in that: The air source unit comprises an air bag (401), a backflush pipe (402), a connecting piece (403), and a blowing head (404); The air bag (401) is installed at an external end of the dust removal box (101), and the output end of the air bag (401) passes through a plurality of pulse solenoid valves to an internal end of the recoil chamber (102); The back-blowing pipe (402) is installed at the output end of the pulse electromagnetic valve connected to the air bag (401) and is distributed in parallel above a row of filter bags (2); a plurality of the blowing heads (404) are provided and are evenly fixed at the bottom of the back-blowing pipe (402); the plurality of the blowing heads (404) correspond one-to-one to the positions of the plurality of filter bags (2) in the row of filter bags (2); The blowing head (404) is installed at the other end of the inner wall of the recoil chamber (102), and the other end of the recoil pipe (402) is connected and fixed to the blowing head (404) by bolts.

3. A pulse dust collector according to claim 2, characterized in that: The flow distribution unit comprises a connecting pipe (405), a flow distribution tube (406), a connecting head (407), a 7-type fixing frame (408), and an air guide blowing pipe (409); The 7-type fixing frame (408) is provided with a plurality of fixing frames (408) which are fixed to the outside of the diversion tube (406) in a circular shape, and the bottom of the 7-type fixing frame (408) is fixed to the top edge of the bag cage frame (5); The connecting head (407) is fixed to the top of the diverter tube (406), and the connecting head (407) is connected to the blowing head (404) via a connecting pipe (405); A plurality of the air-guiding blowing pipes (409) are provided, and the plurality of the air-guiding blowing pipes (409) are evenly fixed to the bottom of the diverter tube (406) and communicate with the inner cavity of the diverter tube (406). The bottom of the air-guiding blowing pipe (409) extends to the inner side of the bag cage frame (5) and is used to guide the high-pressure airflow to the inner side of the filter bag (2).

4. A pulse dust collector according to claim 3, characterized in that: The heights of the plurality of air-guiding blowing pipes (409) are increased in sequence, and the bottom of the tallest air-guiding blowing pipe (409) is close to but does not contact the bottom of the bag cage frame (5).

5. A pulse dust collector according to claim 3, characterized in that: There is a gap between the bottom of the diverter tube (406) and the top of the bag cage frame (5), so as to prevent the diverter tube (406) from blocking the filtered airflow.

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