Bag type dust collector

Abstract

The utility model discloses a bag type dust collector which comprises a dust collector main body, a motor, a fan, a cantilever air pipe and a ventilation pipe, a plurality of filter bags are arranged in the dust collector main body, and a dust hopper is arranged at the lower part of the dust collector main body; the cantilever air pipe is arranged above the filter bag, and a plurality of reverse blowing air ports facing the filter bag are formed in the cantilever air pipe; the output end of the motor is connected with the cantilever air pipe, the top end of the ventilation pipe is communicated with an air inlet of the cantilever air pipe, and the lower end of the ventilation pipe extends downwards into the ash hopper and is communicated with an air outlet pipe of the fan; branch air pipes which are communicated with each other are arranged on the ventilation pipe, and an air outlet is formed in the branch air pipe positioned in the ash bucket and faces the side wall of the ash bucket. The dust hopper solves the problem that dust on the inner wall of the dust hopper is difficult to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal equipment, and in particular relates to a bag type dust collector. Background Art

[0002] Bag dust collector is a common dust removal equipment that uses fiber woven bags as filter layers to filter industrial dust-containing gases. Bag dust collectors are usually external filtration negative pressure dust removal mode. This dust collector has good dust cleaning effect, is safe and reliable, and is easy to maintain. However, the dust on the inner wall of the ash hopper at the bottom of the bag dust collector is difficult to clean during use.

[0003] China Utility Model Patent Authorization Announcement No. CN210097183U discloses a pulse bag dust collector, which includes a dust removal box and an ash hopper fixedly connected to the bottom. The outside of the ash hopper is provided with support plates around it, and a rapping device is provided on the support plate. The rapping device shakes off the dust inside the ash hopper by hitting the outer wall of the ash hopper. This bag dust collector has a certain cleaning effect by shaking off the dust pile in the ash hopper through an external rapping device. However, the rapping device only exists on one side of the outer wall of the ash hopper. During the rapping process, the overall force on the ash hopper is uneven, and the cleaning effect on the side away from the rapping device will be significantly reduced. In addition, long-term mechanical rapping of the ash hopper shell will cause damage to the ash hopper and affect the air tightness of the dust removal equipment.

[0004] China Utility Model Patent Authorization Announcement No. CN218249074U discloses a pulse bag dust collector, the top wall of which is provided with a hot air pipe, which extends into the ash hopper, and the bottom of the hot air pipe is provided with a rotating pipe, which is connected to a rotating shaft, and scrapers are installed on the side of the rotating shaft. The scrapers are driven to rotate by the rotation of the rotating shaft to scrape and crush the dust on the inner wall of the ash hopper. The jet arm of the dust cleaning backflush port of this pulse bag dust collector is independent of the hot air pipe. The rotation of the hot air pipe, rotating pipe, rotating shaft and scrapers requires an additional source of hot air, which increases the energy consumption of the equipment. In addition, the scrapers are horizontally located at the cleaning port of the ash hopper. When faced with large pieces of dust with strong adhesion, if the scrapers are not completely crushed, the scrapers will hinder the discharge of dust. Utility Model Content

[0005] In view of the current technical problems, the utility model aims to provide a bag dust collector which can solve the problem that the dust on the inner wall of the ash hopper is difficult to clean.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A bag dust collector comprises a dust collector body, wherein a plurality of filter bags are arranged in the dust collector body, and an ash hopper is arranged at the lower part of the dust collector body; its structural features are: it also comprises a motor, a fan, a cantilever air duct and a ventilation duct; the cantilever air duct is arranged above the filter bag, and the cantilever air duct is provided with a plurality of back-blowing air outlets arranged toward the filter bag; the output end of the motor is connected to the cantilever air duct, the top end of the ventilation duct is connected to the air inlet of the cantilever air duct, the lower end of the ventilation duct extends downward into the ash hopper and is connected to the air outlet duct of the fan; the ventilation duct is provided with interconnected branch air ducts, and the branch air duct located in the ash hopper is provided with an air outlet, and the air outlet faces the side wall of the ash hopper.

[0008] When the bag dust collector of the utility model is cleaning, the fan sprays air into the ventilation duct, the airflow in the ventilation duct flows upward to the cantilever air duct, and sprays into the filter bag through the back-blowing air port, the motor drives the cantilever air duct to rotate, thereby cleaning the filter bag in the dust collector, and the dust on the outer surface of the filter bag falls into the ash hopper. When the cantilever air duct rotates, it drives the ventilation duct and the branch air duct to rotate synchronously, and when the airflow flows in the ventilation duct, it sprays toward the side wall of the ash hopper through the air outlet of the branch air duct, so that the adhesive dust on the side wall of the ash hopper is blown off, thereby solving the problem that the dust on the inner wall of the ash hopper is difficult to clean. In the bag dust collector of the utility model, the cantilever air duct drives the ventilation duct and the branch air duct to rotate synchronously when rotating for cleaning, and the agglomerated dust and shaped adhesive dust on the inner wall of the ash hopper are crushed and blown off, without the need for an additional power source.

[0009] Preferably, the ventilation duct is provided with a plurality of interconnected branch air ducts, and the plurality of branch air ducts are arranged along the circumference of the ventilation duct.

[0010] Preferably, the axis of the branch wind is parallel to the side wall of the ash hopper. The branch wind duct is arranged above the ash discharge port of the ash hopper and will not hinder the discharge of dust.

[0011] Specifically, a gas inlet and a gas outlet are provided on the side wall of the dust collector body, the gas inlet is arranged between the ash hopper and the filter bag, and the gas outlet is arranged above the filter bag. Dust-containing gas enters the dust collector body through the gas inlet, and after being filtered by the outer surface of the filter bag, the clean gas moves upward through the inside of the filter bag and is discharged through the gas outlet.

[0012] Preferably, the gas outlet is connected to the air inlet of the fan. The dust collector of the utility model is a negative pressure dust removal device, which has little wear on the fan and is suitable for high-concentration dust airflow.

[0013] Specifically, the fan is arranged outside the ash hopper, and the air outlet pipe of the fan penetrates the side wall of the ash hopper and is connected with the ventilation pipe through a bearing seal.

[0014] Specifically, the bearing is a ball bearing, and sealing rings are provided at the connection between the ball bearing and the air outlet pipe and the ventilation pipe of the fan.

[0015] Preferably, a one-way valve is provided on the air outlet, and the one-way valve faces the side wall of the ash hopper.

[0016] Preferably, the ventilation pipe is arranged vertically.

[0017] Preferably, the ventilation duct is integrally connected to the cantilever air duct.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. In the bag dust collector of the utility model, the cantilever air duct drives the ventilation pipe and the branch air duct to rotate synchronously when rotating to clean dust, so as to break and blow off the dust on the inner wall of the ash hopper without the need for an additional power source.

[0020] 2. The bag dust collector of the utility model is a negative pressure dust removal device, which causes less wear on the fan and is suitable for high-concentration dust airflow.

[0021] 3. In the bag dust collector of the utility model, the branch air duct is arranged above the ash discharge port of the ash hopper, which will not hinder the discharge of dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a bag dust collector of the utility model;

[0023] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 3 for Figure 1 Schematic diagram of the connection between the central ventilation duct and the fan.

[0025] In the figure:

[0026] 1-dust collector body; 101-gas inlet; 102-gas outlet; 103-ash hopper; 2-filter bag; 3-cantilever air duct; 301-back-blowing air outlet; 4-motor; 5-fan; 6-ventilation pipe; 7-branch air duct; 8-air outlet; 9-check valve; 10-bearing; 11-sealing ring. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0028] like Figure 1As shown, a bag dust collector of the present embodiment includes a dust collector body 1, a cantilever air duct 3, a motor 4, a fan 5 and a ventilation duct 6. A plurality of fiber filter bags 2 for filtering dust are arranged in the upper half of the dust collector body 1, and a truncated cone-shaped ash hopper 103 is arranged at the lower part of the dust collector body 1. A gas inlet 101 and a gas outlet 102 are arranged on the side wall of the dust collector body 1, and the gas inlet 101 is arranged between the ash hopper 103 and the filter bag 2, and the gas outlet 102 is arranged above the filter bag 2. The cantilever air duct 3 is arranged above the filter bag 2, and a plurality of back-blowing air ports 301 arranged toward the filter bag 2 are arranged on the cantilever air duct 3. The output end of the motor 4 is connected to the cantilever air duct 3, and the cantilever air duct 3 is integrally connected to the ventilation duct 6. The ventilation duct 6 is arranged vertically, and the top end of the ventilation duct 6 is connected to the air inlet of the cantilever air duct 3, and the lower end of the ventilation duct 6 extends downward into the ash hopper 103 and is connected to the air outlet duct of the fan 5. As shown Figure 2 As shown, the fan 5 is arranged outside the ash hopper 103, and the air outlet pipe of the fan 5 penetrates the side wall of the ash hopper 103 and is sealed and connected to the ventilation pipe 6 through the bearing 10. Figure 3 As shown, the bearing 10 is a ball bearing, and a sealing ring 11 is provided at the connection between the ball bearing and the air outlet pipe of the fan 5 and the ventilation pipe 6. Figure 1 and Figure 3 As shown, the ventilation pipe 6 is provided with a plurality of interconnected branch air pipes 7, the plurality of branch air pipes 7 are arranged along the circumference of the ventilation pipe 6, the axis of the branch air pipe 7 is parallel to the side wall of the ash hopper 103, and the branch air pipe 7 is located in the ash hopper 103. The branch air pipe 7 is provided with an air outlet 8, and the air outlet 8 is provided with a one-way valve 9, which faces the side wall of the ash hopper 103.

[0029] The cantilever air duct 3 and the ventilation duct 6 are integrated and connected. When the motor 4 drives the cantilever air duct 3 to rotate horizontally, the ventilation duct 6 rotates synchronously. The bottom of the ventilation duct 6 is connected to the fan 5 but not integrated. The two are connected by a sealed bearing 11. When the ventilation duct 6 rotates, the ball bearing 10 ensures that the ventilation duct 6 rotates unhindered and keeps the air outlet duct of the fan 5 fixed. At the same time, the sealing ring 11 maintains the air tightness when the back-blowing air enters the ventilation duct 6 from the fan 5.

[0030] The dust-laden gas enters the upper part of the dust collector body 1 from the gas inlet 101, and after being filtered by the outer surface of the filter bag 2, the clean gas passes through the inside of the fiber filter bag 2 and is discharged from the gas outlet 102. When the filter bag 2 is cleaned, the gas inlet 101 and the gas outlet 102 are closed, and the motor 4 and the fan 5 are turned on. After the back-blowing air passes upward through the ventilation pipe 6 through the bearing 10, it reaches the back-blowing air port 301 of the cantilever air duct 3 to clean the filter bag 2. When the cantilever air duct 3 rotates to clean the fiber filter bag 2, the dust on the outer surface of the fiber filter bag 2 falls into the ash hopper 103. When the cantilever air duct 3 rotates, the cantilever air duct 3 drives the ventilation pipe 6 to rotate, and the branch air duct 7 on the side of the ventilation pipe 6 rotates synchronously to break the agglomerated dust in the ash hopper 103. In the bag dust collector of the utility model, when the cantilever air duct 3 performs back-blowing to clean dust, the branch air duct 7 can simultaneously perform back-blowing to effectively blow off the adhesive dust on the surface of the ash hopper 103 .

[0031] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A bag dust collector, comprising a dust collector body (1), wherein a plurality of filter bags (2) are arranged inside the dust collector body (1), and an ash hopper (103) is arranged at the lower part of the dust collector body (1); the characteristics are: It also includes a motor (4), a fan (5), a cantilever air duct (3) and a ventilation duct (6); The cantilever air duct (3) is arranged above the filter bag (2), and the cantilever air duct (3) is provided with a plurality of back-blowing air ports (301) arranged toward the filter bag (2); The output end of the motor (4) is connected to the cantilever air duct (3), the top end of the ventilation pipe (6) is connected to the air inlet of the cantilever air duct (3), and the lower end of the ventilation pipe (6) extends downward into the ash hopper (103) and is connected to the air outlet pipe of the fan (5); The ventilation pipe (6) is provided with a connected branch air pipe (7), and the branch air pipe (7) located in the ash hopper (103) is provided with an air outlet (8), and the air outlet (8) faces the side wall of the ash hopper (103).

2. The bag filter according to claim 1, characterized in that: The ventilation pipe (6) is provided with a plurality of interconnected branch air pipes (7), and the plurality of branch air pipes (7) are arranged along the circumference of the ventilation pipe (6).

3. The bag filter according to claim 2, characterized in that: The axis of the branch air duct (7) is parallel to the side wall of the ash hopper (103).

4. The bag filter according to claim 1, characterized in that: A gas inlet (101) and a gas outlet (102) are provided on the side wall of the dust collector body (1); the gas inlet (101) is arranged between the ash hopper (103) and the filter bag (2); and the gas outlet (102) is arranged above the filter bag (2).

5. The bag filter according to claim 4, characterized in that: The gas outlet (102) is in communication with the air intake port of the fan (5).

6. The bag filter according to claim 1, characterized in that: The fan (5) is arranged outside the ash hopper (103), and an air outlet pipe of the fan (5) penetrates the side wall of the ash hopper (103) and is sealed and connected to the ventilation pipe (6) via a bearing (10).

7. The bag filter according to claim 6, characterized in that: The bearing (10) is a ball bearing, and sealing rings (11) are provided at the connection between the ball bearing and the air outlet pipe of the fan (5) and the ventilation pipe (6).

8. The bag dust collector according to any one of claims 1 to 7, characterized in that: The air outlet (8) is provided with a one-way valve (9), and the one-way valve (9) faces the side wall of the ash hopper (103).

9. The bag dust collector according to any one of claims 1 to 7, characterized in that: The ventilation pipe (6) is arranged vertically.

10. The bag dust collector according to any one of claims 1 to 7, characterized in that: The ventilation pipe (6) is integrally connected to the cantilever air duct (3).

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