Bin top filter bag dust removal equipment

Abstract

The utility model discloses bin top filter bag dust removal equipment, which belongs to the technical field of dust filtration and comprises a box pipe, a connecting reducer connected to the bottom of the box pipe, a dust inlet arranged at the bottom of the connecting reducer and used for being connected with an exhaust port of the equipment, and a top cover arranged at the top of the box pipe, an access door is arranged at the front part of the box pipe, and a filter bag mechanism is arranged in the box pipe. The filter bag mechanism is used for filtering dust in the upper exhaust gas; a powder blowing mechanism is arranged on the upper side of the front part of the box pipe and is used for downwards blowing dust filtered from the filter bag mechanism out of the filter bag mechanism; one side of the upper part of the box pipe is connected with an air outlet pipe, one end of the air outlet pipe is connected with a pressurizing exhaust mechanism, and the pressurizing exhaust mechanism is used for accelerating exhaust of air filtered by the filter bag mechanism. According to the bin top filter bag dust removal equipment, the dust blowing mechanism applies the filter bag mechanism, dust adsorbed at the bottom of a filter bag can be promoted to be discharged downwards, and the bidirectional air outlet silencer is arranged, so that the exhaust noise of the centrifugal fan can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal, and in particular relates to a silo top filter bag dust removal device. Background Art

[0002] With the development of economy and the progress of society, environmental protection is a basic national policy of our country. Environmental protection industry is an important material basis and technical guarantee for environmental protection, and is one of the new economic growth points of the national economy. Vigorously developing environmental protection industry is an important measure to implement the sustainable development strategy. Silo top filter bag dust removal equipment is widely used in industrial dust control in shipbuilding, automobile, casting, non-ferrous metal processing, light industry and medicine and other industries.

[0003] This type of silo top filter bag dust removal equipment is mostly installed on the top of the storage room, and consists of a silo, multi-directional pipes connected to the lower side of the silo, and a filter bag dust removal equipment connected to the top of the silo. The multi-directional pipes are equipped with ventilation equipment, which can suck air from various areas into the silo and continuously introduce it upward to the filter bag dust removal equipment.

[0004] The filter bag dust removal equipment currently used on the top of the silo is mainly composed of a box tube connected to the top of the silo and an air outlet pipe set on one side of the box tube. A filter bag mechanism is set inside the box tube, and one end of the air outlet pipe is connected to a centrifugal fan. Then, when the centrifugal fan is running, the air is discharged faster, and the dust can be filtered down by the filter bag. When the centrifugal fan stops running, the dust in the filter bag falls into the silo due to its own weight, which is beneficial to the recovery of dust.

[0005] However, the filter bag is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter dust-containing gas. When the dust-containing gas enters the bag filter, the dust with large particles and high specific gravity settles down due to gravity and falls into the tank. When the gas containing finer dust passes through the filter bag, the dust is blocked and difficult to fall due to adsorption by the surface material of the filter bag, which makes the air permeability of the filter bag decrease faster; secondly, the gas discharged by the centrifugal fan is noisy.

[0006] Therefore, it is necessary to set up a silo top filter bag dust removal equipment which can promote the downward discharge of dust adsorbed by the bottom of the filter bag and reduce the noise of the centrifugal fan exhaust. Utility Model Content

[0007] The utility model aims to provide a silo top filter bag dust removal device which can promote the downward discharge of dust adsorbed by the bottom of the filter bag, so as to solve the problems existing in the prior art.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silo top filter bag dust removal device, comprising a box pipe, a connecting reducer connected to the bottom of the box pipe, a dust inlet arranged at the bottom of the connecting reducer and used to be connected to the exhaust port of the equipment, and a top cover arranged at the top of the box pipe, the front part of the box pipe is provided with an inspection door, and a filter bag mechanism is arranged in the box pipe, and the filter bag mechanism is used to filter dust in the upper exhaust gas;

[0009] A powder blowing mechanism is provided on the upper front side of the box pipe, and the powder blowing mechanism is used to blow the dust filtered by the filter bag mechanism downward out of the filter bag mechanism; an air outlet pipe is connected to one side of the upper part of the box pipe, and a pressurized exhaust mechanism is connected to one end of the air outlet pipe, and the pressurized exhaust mechanism is used to accelerate the discharge of air filtered by the filter bag mechanism.

[0010] In order to filter the dust in the upper row, preferably, the filter bag mechanism includes a support frame arranged in the box tube, and a filter bag is arranged on the top of the support frame.

[0011] In order to effectively blow the dust filtered in the filter bag mechanism into the interior of the tank, preferably, the powder blowing mechanism includes an air tank bracket arranged on the upper side of the box pipe, a gas tank is arranged on the top of the air tank bracket, a connecting pipe is evenly connected to the top of the gas tank in the horizontal direction and the connecting pipe is connected to the gas tank, one end of the connecting pipe is connected to a solenoid valve, the exhaust end of the solenoid valve is connected to a spray pipe, and the spray pipe is connected to the box pipe;

[0012] The gas storage tank is provided with a solenoid valve wire groove, and the cables connected to the control wiring terminals of the solenoid valve are all inserted into the solenoid valve wire groove.

[0013] In order to protect the solenoid valve and its upper connecting member from rain, preferably, a solenoid valve rain cap is provided at the front of the box pipe and at the upper position of the powder blowing mechanism.

[0014] In order to discharge the filtered gas in the box tube more quickly, preferably, the pressurized exhaust mechanism includes a fan support frame arranged on the upper part of one side of the box tube, a centrifugal fan is arranged on the top of the fan support frame, and the four sides of the bottom of the centrifugal fan are connected to the fan shock absorber, and the fan shock absorber is fixed on the top of the fan support frame, and the air inlet end of the centrifugal fan is connected to the air outlet pipe;

[0015] The exhaust end of the centrifugal fan is connected to a two-way air outlet muffler, and the two-way air outlet muffler is used to reduce the air noise discharged from the centrifugal fan.

[0016] In order to reduce the wind noise during the centrifugal fan exhaust process, preferably, the two-way air outlet silencer includes an outer tube, a middle partition is arranged on the inner middle side of the outer tube, a row of hole pipe 1 is arranged at the bottom of the outer tube, and the lower end of the row of hole pipe 1 is connected to an external pipe and the external pipe is connected to the exhaust end of the centrifugal fan;

[0017] Inner partitions are evenly arranged on both sides of the outer tube in a transverse direction, and the upper and lower parts of the inner partitions are respectively penetrated by a second row of hole tubes and a third row of hole tubes, and baffles are arranged on both sides of the outer tube.

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

[0019] In the utility model, the application of the powder blowing mechanism to the filter bag mechanism can promote the downward discharge of dust adsorbed at the bottom of the filter bag, and the provision of a two-way air outlet silencer can reduce the exhaust noise of the centrifugal fan in the silo top filter bag dust removal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a main schematic diagram of the utility model;

[0022] Figure 3 for Figure 2 A partial cutaway diagram of

[0023] Figure 4 It is a right side schematic diagram of the utility model;

[0024] Figure 5 It is a cutaway schematic diagram of the bidirectional air outlet silencer in the utility model.

[0025] In the figure: 1 box pipe, 2 connecting reducer, 3 dust inlet, 4 support frame, 5 filter bag, 6 top cover, 7 inspection door, 8 gas tank bracket, 9 gas tank, 10 solenoid valve, 11 spray pipe, 13 solenoid valve wire groove, 14 fan support frame, 15 centrifugal fan, 16 two-way air outlet silencer, 101 solenoid valve rain cap, 151 air outlet pipe, 152 fan shock absorber, 160 middle partition, 161 outer pipe, 162 row of perforated pipes one, 163 inner partition, 164 row of perforated pipes two, 165 row of perforated pipes three, 166 baffle. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the embodiment of the utility model provides a silo top filter bag dust removal device, including a box pipe 1, a connecting reducer 2 connected to the bottom of the box pipe 1 by a flange, a dust inlet 3 integrally arranged at the bottom of the connecting reducer 2 and used to be connected to the exhaust port flange of the equipment, and a top cover 6 fixed to the top of the box pipe 1 by annular bolts. An inspection door 7 is installed at the front of the box pipe 1. Through the arrangement of the inspection door 7, it is convenient for maintenance workers to enter the box pipe 1 to check the filter bag mechanism 5. The box pipe 1 is provided with a filter bag mechanism, and the filter bag mechanism is used to filter dust in the upper exhaust gas;

[0028] A powder blowing mechanism is provided on the upper front side of the box pipe 1, which is used to blow the dust filtered by the filter bag mechanism downward out of the filter bag mechanism; an air outlet pipe 151 is seamlessly welded on the right side of the upper part of the box pipe 1, and the box pipe 1 and the air outlet pipe 151 are interconnected, and the right end of the air outlet pipe 151 is connected to a pressurized exhaust mechanism, which is used to accelerate the discharge of air filtered by the filter bag mechanism.

[0029] See also Figure 3 The filter bag mechanism includes a support frame 4 fixed to the lower side of the inner wall of the box tube 1 by annular bolts, the outer wall of the support frame 4 is pressed against the inner wall of the box tube 1, and a filter bag 5 is embedded on the top of the support frame 4. The filter bag 5 is made of non-woven felt and uses the filtering effect of the fiber fabric to filter the dust-containing gas.

[0030] See also Figure 1 , Figure 2 and Figure 4 The powder blowing mechanism includes an air tank bracket 8 bolted to the upper front side of the box pipe 1, and an air tank 9 is bolted to the top of the air tank bracket 8. A connecting pipe is evenly connected to the top of the air tank 9 in the horizontal direction and is connected to the air tank 9. The upper end of the connecting pipe is connected to the air inlet end of the electromagnetic valve 10, and the exhaust end of the electromagnetic valve 10 is connected to the ejection pipe 11, and the ejection pipe 11 is connected to the box pipe 1; in addition, an air connecting pipe is connected to the lower end of the air tank 9, and the air connecting pipe is connected to an external compressed air pump through an air connecting hose, and the air pressure of the air injected into the air tank 9 can be set. When the electromagnetic valve 10 is opened, the air inside the air tank 9 is discharged into the box pipe 1 through the ejection pipe 11, and the instantaneous air pressure impacts the filter bag 5 downward, causing the filter bag 5 to flip down, and the air is quickly discharged from the upper part of the filter bag 5 to the lower part, and the dust adsorbed under the filter bag 5 is quickly rushed down, thereby causing the dust to fall.

[0031] A solenoid valve wire groove 13 is screwed on the gas storage tank 9, and the cables connected to the control terminals of the solenoid valve 10 are all inserted into the solenoid valve wire groove 13, and the control terminals of the solenoid valve 10 are connected to the power control input end of the cable pulse controller. Through the pulse controller, the opening and closing of the solenoid valve 10 at each position can be controlled, thereby controlling the amount of air instantly rushing into the box pipe 1 and adjusting the force of the downward flushing of the filter bag 5.

[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A solenoid valve rainproof cap 101 is screwed to the front of the box pipe 1 and located at the upper position of the powder blowing mechanism.

[0033] Such a configuration can provide the solenoid valve 10 with the effect of shielding rainwater on rainy days.

[0034] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The pressurized exhaust mechanism includes a fan support frame 14 fixed by bolts to the upper right side of the box pipe 1, a centrifugal fan 15 is arranged on the top of the fan support frame 14, and a fan shock absorber 152 is screwed on four sides of the bottom of the centrifugal fan 15. The fan shock absorber 152 is a rubber shock-absorbing pad with a stud embedded in the middle, and the fan shock absorber 152 is fixed to the top of the fan support frame 14 by annular bolts, and the air inlet end of the centrifugal fan 15 is flange-connected to the air outlet pipe 151 through an air duct check valve;

[0035] When the centrifugal fan 15 is running, the valve plate of the air duct check valve turns up, and the gas can be sucked away from the upper part of the box pipe 1 and then discharged. When the centrifugal fan 15 stops running, the valve plate of the air duct check valve is closed; at this time, the air blown into the box pipe 1 by the powder blowing mechanism is blocked by the valve plate of the air duct check valve, thereby ensuring the operating reliability of the powder blowing mechanism.

[0036] A two-way air outlet muffler 16 is connected to the exhaust end of the centrifugal fan 15 , and the two-way air outlet muffler 16 is used to reduce the air noise discharged from the centrifugal fan 15 .

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The two-way air outlet silencer 16 includes an outer tube 161, a middle partition 160 is welded on the inner middle side of the outer tube 161, and the inner side of the outer tube 161 is divided into two left and right spaces by the middle partition 160. Two row hole pipes 162 of different heights are welded on the lower middle side of each space of the outer tube 161, and strip holes are evenly arranged on the row hole pipe 162. The lower end of the row hole pipe 162 is connected to an external pipe, and the external pipe is connected to the exhaust end of the centrifugal fan 15;

[0038] Three inner partitions 163 are uniformly and seamlessly welded laterally on the left and right sides of the two spaces of the outer tube 161. The upper and lower parts of the inner partitions 163 are penetrated and seamlessly welded with a second row of hole tubes 164 and a third row of hole tubes 165, respectively. Among them, the second row of hole tubes 164 is connected to the middle space of the outer tube 161 but not to the outside, and the third row of hole tubes 165 is not connected to the middle space but to the outside. In addition, the second row of hole tubes and the third row of hole tubes 165 are uniformly provided with circular holes at the positions of the inner partitions 163, and baffles 166 are seamlessly welded on the left and right sides of the outer tube 161.

[0039] When the centrifugal fan 15 discharges gas, it will be discharged to the middle space of the outer tube 161 through the perforated tube 1 162 of different lengths on both sides. The generated wind noise wave will be reflected and offset in the middle space of the outer tube 161, and then further reflected and offset when passing through the perforated tube 2 164 and the perforated tube 3 165, thereby reducing the wind noise.

[0040] The working principle of this embodiment is as follows:

[0041] When the centrifugal fan 15 is running, the two-way air outlet muffler 16 has multiple groups of perforated pipes of different lengths arranged inside and divides the sound chamber, so that the exhaust wind noise is weakened during the exhaust process.

[0042] When the centrifugal fan 15 stops running, the solenoid valve 10 opens, and the air inside the air storage tank 9 is discharged into the box pipe 1 through the ejection pipe 11. The instantaneous air pressure impacts the filter bag 5 downward, and the filter bag 5 turns down. The air is quickly discharged from the upper part of the filter bag 5 to the lower part, and the dust adsorbed under the filter bag 5 is quickly rushed down, thereby causing the dust to fall.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A silo top filter bag dust removal device, comprising a box tube (1), a connecting reducer (2) connected to the bottom of the box tube (1), a dust inlet (3) arranged at the bottom of the connecting reducer (2) and used to be connected to the exhaust port of the device, and a top cover (6) arranged at the top of the box tube (1), characterized in that: The front part of the box pipe (1) is provided with an inspection door (7), and a filter bag mechanism is provided inside the box pipe (1), and the filter bag mechanism is used to filter out dust in the upper exhaust gas; A powder blowing mechanism is provided on the upper front side of the box tube (1), and the powder blowing mechanism is used to blow the dust filtered by the filter bag mechanism downward out of the filter bag mechanism; an air outlet pipe (151) is connected to one side of the upper part of the box tube (1), and a pressurized exhaust mechanism is connected to one end of the air outlet pipe (151), and the pressurized exhaust mechanism is used to accelerate the discharge of air filtered by the filter bag mechanism; The pressurized exhaust mechanism comprises a fan support frame (14) arranged at the upper part of one side of the box tube (1); a centrifugal fan (15) is arranged on the top of the fan support frame (14); four sides of the bottom of the centrifugal fan (15) are connected to fan shock absorbers (152), and the fan shock absorbers (152) are fixed to the top of the fan support frame (14); the air inlet end of the centrifugal fan (15) is connected to the air outlet pipe (151); The exhaust end of the centrifugal fan (15) is connected to a two-way air outlet silencer (16), and the two-way air outlet silencer (16) is used to reduce the air noise discharged from the centrifugal fan (15).

2. A silo top filter bag dust removal device according to claim 1, characterized in that: The filter bag mechanism comprises a support frame (4) arranged in the box tube (1), and a filter bag (5) is arranged on the top of the support frame (4).

3. The silo top filter bag dust removal equipment according to claim 1 is characterized by: The powder blowing mechanism comprises an air tank support (8) arranged on the upper side of the box pipe (1), an air tank (9) is arranged on the top of the air tank support (8), a connecting pipe is evenly connected to the top of the air tank (9) in a transverse manner and the connecting pipe is in communication with the air tank (9), one end of the connecting pipe is connected to an electromagnetic valve (10), an exhaust end of the electromagnetic valve (10) is connected to an ejection pipe (11), and the ejection pipe (11) is in communication with the box pipe (1); The gas storage tank (9) is provided with a solenoid valve wire groove (13), and the cables connected to the control wiring terminals of the solenoid valve (10) are all inserted into the solenoid valve wire groove (13).

4. The silo top filter bag dust removal equipment according to claim 1, characterized in that: A solenoid valve rainproof cap (101) is arranged at the front of the box tube (1) and located above the powder blowing mechanism.

5. The silo top filter bag dust removal equipment according to claim 1, characterized in that: The two-way air outlet silencer (16) comprises an outer tube (161), a middle partition (160) is arranged on the inner middle side of the outer tube (161), a hole row tube (162) is arranged at the bottom of the outer tube (161), the lower end of the hole row tube (162) is connected to an external tube, and the external tube is connected to the exhaust end of the centrifugal fan (15); Inner partitions (163) are evenly arranged on both sides of the outer tube (161), and a second row of hole tubes (164) and a third row of hole tubes (165) are respectively penetrated through the upper and lower parts of the inner partitions (163). Baffles (166) are arranged on both sides of the outer tube (161).

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