Long-bag low-pressure large pulse bag type dust collector

Abstract

The utility model discloses a long-bag low-pressure large pulse bag type dust collector, relates to the field of bag type dust collectors, and aims to solve the problems that in the prior art, most of existing large pulse bag type dust collectors inject gas into filter bags in a pulse mode through low-pressure gas, and dust on the outer side faces of the filter bags is removed in a reverse ventilation mode; however, the dust on the outer surface of the filter bag cannot be completely removed in the mode, and the residual dust can influence part of the dust removal efficiency. A gas purification chamber is arranged at the upper end in the pulse bag type dust collector main body, a purified gas outlet is formed in one side of the gas purification chamber, a partition plate is arranged between the interior of the pulse bag type dust collector main body and the gas purification chamber, a plurality of columnar filter bags are arranged at the lower end of the partition plate in an array manner, the upper end of each columnar filter bag is communicated with the gas purification chamber, and the lower end of each columnar filter bag is communicated with the gas purification chamber. A dust scraping ring is arranged at the upper end of the outer side end surface of each columnar filter bag, and a connecting frame is arranged among the plurality of dust scraping rings.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bag type dust collector, concretely to a long bag low pressure large -scale pulse bag type dust collector. BACKGROUND

[0002] Bag type dust collector is a dry type dust filtering device. It is suitable for capturing fine, dry and non-fibrous dust. The filter bag is made of woven filter cloth or felt. It uses the filtering effect of fiber fabric to filter dust-containing gas. When the dust-containing gas enters the bag type dust collector, the dust with large particles and specific gravity settles down due to gravity and falls into the ash bucket. The gas containing fine dust is filtered through filter material, and the dust is blocked, so that the gas is purified.

[0003] For example, application publication number CN 107213715 A, a long bag low pressure pulse bag type dust collector, including dust collector body, and located below the dust collector body and with the dust collector body connection's ash bucket, the ash bucket in set up for screening out coarse particle dust's screening assembly;The screening assembly includes the collection box body that is obliquely arranged in the ash bucket, the collection box body bottom installs with the air inflation tank of air permeable cloth, the air inflation tank is provided with the air inlet pipe, the air inlet pipe is connected with the ash bucket outside setting's roots blower's air outlet pipe connection. The long bag low pressure pulse bag type dust collector provided by the application can screen out coarse particle dust, collect and discharge it, prevent the subsequent process pipeline from being blocked, and has the characteristics of large air volume, small floor area and low energy consumption.

[0004] Most of the existing large pulse bag type dust collectors inject gas into the filter bag by low pressure gas in a pulse manner to remove dust on the outer surface of the filter bag by reverse ventilation. However, this method cannot completely remove the dust on the outer surface of the filter bag, and the residual dust will still affect the dust removal efficiency. Therefore, there is an urgent need to develop a long bag low pressure large pulse bag type dust collector to help people solve the existing problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a long bag low pressure large pulse bag type dust collector to solve the problem that most of the existing large pulse bag type dust collectors inject gas into the filter bag by low pressure gas in a pulse manner to remove dust on the outer surface of the filter bag by reverse ventilation, but this method cannot completely remove the dust on the outer surface of the filter bag, and the residual dust will still affect the dust removal efficiency.

[0006] To achieve the above object, the utility model provides the following technical scheme: a long bag low pressure large -scale pulse bag type dust collector, including pulse bag type dust collector main part, the inside upper end of pulse bag type dust collector main part is provided with clean gas chamber, one side of clean gas chamber is provided with clean gas export, the inside of pulse bag type dust collector main part is provided with the partition between clean gas chamber and is provided with the array of a plurality of cylindrical filter bags of partition lower end, every cylindrical filter bag upper end all is linked with clean gas chamber, every cylindrical filter bag outside end surface upper end all is provided with dust scraping ring, it is commonly provided with connecting frame between a plurality of dust scraping rings, connecting frame includes a plurality of connecting rods, internal thread pipe and guide scraping ring, the lower end of pulse bag type dust collector main part is provided with hopper, one side of hopper is provided with dust gas import, the lower end of hopper is fixedly connected with spiral dust discharger.

[0007] Preferably, the guide scraping ring is arranged on the inner wall of the pulse bag type dust collector main body, the internal thread pipe is arranged in the middle of the pulse bag type dust collector main body, and the guide scraping ring, the internal thread pipe and the plurality of dust scraping rings are fixedly connected into an integral whole through the connecting rods.

[0008] Preferably, a screw rod is rotatably connected to the middle of the pulse bag type dust collector main body, and the screw rod is threadedly connected through the middle of the internal thread pipe.

[0009] Preferably, a driving device is fixedly arranged on the middle of the upper end surface of the pulse bag type dust collector main body, the upper end of the screw rod extends out of the upper end surface of the pulse bag type dust collector main body through the clean gas chamber and is fixedly connected to the output end of the driving device.

[0010] Preferably, a cross support rod is fixedly arranged at the lower end of the pulse bag type dust collector main body, the cross support rod is fixedly connected between the outer side and the inner wall of the pulse bag type dust collector main body through a fixing ring, a limiting ring is arranged in the middle of the cross support rod, and the lower end of the screw rod is inserted into the limiting ring.

[0011] Preferably, four guide rods are annularly and fixedly connected between the upper end of the fixing ring and the lower end of the partition, and four guide holes are annularly arranged on the guide scraping ring.

[0012] Preferably, the four guide rods respectively pass through the guide holes on the guide scraping ring.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. In the utility model, the combination structure of the dust scraping ring and the connecting frame, combined with the driving mechanism of the driving device and the screw rod, realizes the deep cleaning of the outer surface of the cylindrical filter bag. The dust scraping ring closely adheres to the surface of the filter bag during the lifting process, effectively removes the dust that may be left after pulse dust cleaning, significantly improves the dust removal efficiency and the cleanliness of the filter bag, and thus prolongs the service life of the filter bag.

[0015] 2、The design of the guide scraping ring and the guide rod not only provides stable guidance for the lifting of the connecting frame, but also effectively cleans the inner wall of the pulse bag type dust collector. The guide scraping ring lifts together with the connecting frame, scraping off the dust attached to the inner wall, avoiding the influence of dust accumulation on the performance of the dust collector, and ensuring the continuous and efficient operation of the dust collector.

[0016] 3、The internal structure of the pulse bag type dust collector is optimized in the utility model, such as the cross-shaped supporting rod, the limiting ring, and the fixing ring, which enhances the structural stability and durability of the dust collector. These designs not only improve the adaptability of the dust collector in harsh working environments, but also reduce the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of a long-bag low-pressure large-scale pulse bag type dust collector of the utility model;

[0018] Figure 2 It is a side sectional view of the utility model;

[0019] Figure 3 It is a main sectional view of the utility model;

[0020] Figure 4 It is a plan view of the utility model;

[0021] Figure 5 It is an enlarged view of A detail of the utility model.

[0022] In the drawings: 1, pulse bag type dust collector body; 101, clean gas chamber; 102, partition plate; 103, clean gas outlet; 2, ash bucket; 201, spiral dust discharging machine; 202, dust-containing gas inlet; 3, columnar filter bag; 4, dust scraping ring; 5, connecting frame; 501, connecting rod; 502, internal threaded pipe; 503, guide scraping ring; 504, guide hole; 6, cross-shaped supporting rod; 601, limiting ring; 602, fixing ring; 603, guide rod; 7, screw rod; 701, driving device. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Please refer to Figures 1-5The utility model provides an embodiment: a long bag low pressure large -scale pulse bag type dust collector, including pulse bag type dust collector main part 1, pulse bag type dust collector main part 1 inside upper end is provided with clean gas chamber 101, and one side of clean gas chamber 101 is provided with clean gas export 103, and pulse bag type dust collector main part 1 inside is provided with the partition 102 between clean gas chamber 101, and the partition 102 lower end array is provided with a plurality of cylindrical filter bags 3, and every cylindrical filter bag 3 upper end all are communicated with clean gas chamber 101, and every cylindrical filter bag 3 outer side end surface upper end all are provided with dust scraping ring 4, and a plurality of dust scraping rings 4 are commonly provided with connecting frame 5, and connecting frame 5 includes a plurality of connecting rods 501, inner thread pipe 502 and guide scraping ring 503, and pulse bag type dust collector main part 1 lower end is provided with hopper 2, and one side of hopper 2 is provided with dust gas inlet 202, and hopper 2 lower end is fixedly connected with spiral dust discharger 201, and guide scraping ring 503 sets up on the inner wall of pulse bag type dust collector main part 1, and inner thread pipe 502 sets up in the middle part inside pulse bag type dust collector main part 1, and guide scraping ring 503, inner thread pipe 502 and a plurality of dust scraping rings 4 are commonly fixedly connected into an entirety through connecting rod 501, make connecting frame 5 lift when synchronous drive a plurality of dust scraping rings 4 and guide scraping ring 503 lift, through dust scraping ring 4 inner wall stick to cylindrical filter bag 3 outer side end face, when dust scraping ring 4 lift can the dust that cylindrical filter bag 3 outer side end face remained after low pressure pulse mechanism dust removal is scraped, when guide scraping ring 503 lift can synchronous dust that remained on the inner wall of pulse bag type dust collector main part 1 is scraped, realize the cleaning of the inner wall of pulse bag type dust collector main part 1.

[0025] Please refer to Figure 3 and Figure 5 The middle part inside pulse bag type dust collector main part 1 is rotatably connected with screw rod 7, and screw rod 7 passes through the middle part screw connection of inner thread pipe 502, and the middle part of the upper end surface of pulse bag type dust collector main part 1 is fixedly provided with driving device 701, and the upper end of screw rod 7 extends out the upper end surface of pulse bag type dust collector main part 1 through clean gas chamber 101 and is fixedly connected with the output end of driving device 701, and driving device 701 drives screw rod 7 to rotate, and screw rod 7 rotates and drives inner thread pipe 502 to lift, so that inner thread pipe 502 drives connecting frame 5 to lift.

[0026] Please refer to Figure 2 and Figure 3The lower end of the pulse bag type dust collector main body 1 is fixedly provided with a cross support rod 6, the outer side of the cross support rod 6 is fixedly connected with the inner wall of the pulse bag type dust collector main body 1 through a fixed ring 602, the middle part of the cross support rod 6 is provided with a limiting ring 601, the lower end of a screw rod 7 is inserted into the inside of the limiting ring 601, the lower end of the screw rod 7 is limited through the limiting ring 601, the stability of the screw rod 7 during rotation is ensured, four guide rods 603 are fixedly connected in an annular array between the upper end of the fixed ring 602 and the lower end of the partition plate 102, four guide holes 504 are arranged in an annular array on the guide scraping ring 503, the four guide rods 603 respectively pass through the inside of the guide holes 504 on the guide scraping ring 503, when the connecting frame 5 is lifted, the lifting of the guide scraping ring 503 is guided through the four guide rods 603, the vertical lifting of the guide scraping ring 503 is ensured, and then the lifting of the whole connecting frame 5 is kept stable.

[0027] Working principle: in use, the pulse valve on the external compressed air storage tank is connected with the gas distribution pipe in the clean gas chamber 101 through the gas conveying pipe, the gas distribution pipe is further branched and extended to the inside upper end of each columnar filter bag 3 and fixedly connected with the blowing pipe. When the dust collector works, the dust-containing gas enters the hopper 2 from the dust-containing gas inlet 202, then passes through the columnar filter bag 3 for filtration, the purified gas enters the clean gas chamber 101 and is discharged through the clean gas outlet 103. In order to remove the dust accumulated on the outer surface of the columnar filter bag 3, the pulse valve is periodically opened, compressed air is injected into the blowing pipe, a pulse airflow is generated to blow back the filter bag in the reverse direction, and the dust is shaken off to the hopper 2. At this time, the driving device 701 is started, the whole connecting frame 5 is driven to vertically lift along the guide rod 603 through the thread cooperation of the screw rod 7 and the internal thread pipe 502. The dust scraping ring 4 moves with the connecting frame 5, tightly abuts the outer side of the columnar filter bag 3, and scrapes the residual dust after pulse dust cleaning. At the same time, the guide scraping ring 503 slides on the inner wall of the pulse bag type dust collector main body 1, and cleans the dust attached to the inner wall. Finally, the dust collected in the hopper 2 is continuously discharged through the spiral dust discharger 201, and the dust removal process is completed. The design not only improves the dust removal efficiency, but also ensures the internal cleanliness of the dust collector and prolongs the service life.

[0028] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A long-bag low-pressure large-scale pulse bag-type dust collector comprising a pulse bag-type dust collector main body (1), characterized in that: The pulse bag type dust collector body (1) is provided with a clean gas chamber (101) at the upper end inside, the clean gas chamber (101) is provided with a clean gas outlet (103) on one side, a partition plate (102) is arranged between the inside of the pulse bag type dust collector body (1) and the clean gas chamber (101), a plurality of columnar filter bags (3) are arranged in an array at the lower end of the partition plate (102), the upper end of each columnar filter bag (3) is communicated with the clean gas chamber (101), a dust scraping ring (4) is arranged on the upper end of the outer side end face of each columnar filter bag (3), a plurality of dust scraping rings (4) are commonly provided with a connecting frame (5), the connecting frame (5) comprises a plurality of connecting rods (501), an internally threaded pipe (502) and a guide scraping ring (503), a dust hopper (2) is arranged at the lower end of the pulse bag type dust collector body (1), a dust gas inlet (202) is arranged on one side of the dust hopper (2), and a spiral dust discharging machine (201) is fixedly connected to the lower end of the dust hopper (2).

2. A long bag low pressure large scale pulse bag filter according to claim 1, characterized in that: The guide scraping ring (503) is arranged on the inner wall of the pulse bag type dust collector body (1), the internally threaded pipe (502) is arranged in the middle of the inside of the pulse bag type dust collector body (1), and the guide scraping ring (503), the internally threaded pipe (502) and the plurality of dust scraping rings (4) are fixedly connected into an integral whole through the connecting rods (501).

3. A long bag low pressure large scale pulse bag filter according to claim 1, characterized in that: The screw rod (7) is rotatably connected to the middle of the inside of the pulse bag type dust collector body (1), and the screw rod (7) is threadedly connected through the middle of the internally threaded pipe (502).

4. A long bag low pressure large scale pulse bag filter according to claim 3, characterized in that: The driving device (701) is fixedly arranged on the middle of the upper end face of the pulse bag type dust collector body (1), and the upper end of the screw rod (7) extends out of the upper end face of the pulse bag type dust collector body (1) through the clean gas chamber (101) and is fixedly connected to the output end of the driving device (701).

5. A long-bag low-pressure large-scale pulse bag-type dust collector according to claim 4, characterized in that: The cross support rod (6) is fixedly arranged at the lower end inside of the pulse bag type dust collector body (1), the cross support rod (6) is fixedly connected between the outer side and the inner wall of the pulse bag type dust collector body (1) through the fixing ring (602), the middle of the cross support rod (6) is provided with a limiting ring (601), and the lower end of the screw rod (7) is inserted into the inside of the limiting ring (601).

6. A long bag low pressure large scale pulse bag filter according to claim 5, characterized in that: The four guide rods (603) are respectively inserted into the guide holes (504) in the guide scraping ring (503).

7. A long bag low pressure large scale pulse bag filter according to claim 6, characterized in that: The four guide rods (603) are respectively inserted into the guide holes (504) in the guide scraping ring (503).

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