Partitioned blowing device

Abstract

The utility model relates to the field of flue gas treatment, in particular to a partitioned blowing device, which comprises a gas distribution device, a blowing pipe and branch pipes communicated with the blowing pipe, one end of the blowing pipe is closed, the other end of the blowing pipe is used for feeding gas, the branch pipes are divided into a plurality of groups, and the opening and closing of the blowing pipe and the branch pipes are controlled by the gas distribution device. And when the air inlet of any group of branch pipes is communicated with the blowing pipe, the other groups of branch pipes and the blowing pipe are closed. By using the blowing pipe, when the dust of the filter bag needs to be removed, the flow of gas in the branch pipes of the blowing pipe can be multiplied as the flow of a high-pressure fan or an air compressor, so that the dust blowing capability is multiplied. And sufficient soot blowing can be carried out on large-area filter elements such as pleated filter cartridges and pleated filter bags. Meanwhile, the soot blower is small in size, the whole dust remover device is compact in structure, and flow field distribution is reasonable.

Description

Technical Field

[0001] The utility model belongs to the field of smoke treatment, in particular to a partitioned spraying device. Background Art

[0002] The most widely used methods at present are pulse jet cleaning and reverse air blow pipe cleaning.

[0003] When using pleated filter cartridges, pleated filter bags, and large-diameter filter bags, increasing the filtration area of ​​a single filter bag can reduce the size of the dust collector body, reduce the floor space of the dust collector, and easily achieve a lower filtration wind speed, thereby reducing resistance and reducing power consumption, bringing huge social benefits. Among them, when the pleated filter cartridge is used, the wind is blown into the blowpipe, and the wind in the blowpipe is blown into the corresponding branch pipe in turn and blown from the branch pipe into the corresponding pleated filter cartridge.

[0004] However, according to the current soot blowing capacity of pulse soot blowing devices, the filtration area of ​​a single filter bag can only be less than 5 square meters, otherwise the soot blowing will not be thorough due to too small air volume and too low wind speed. Utility Model Content

[0005] The utility model provides a partitioned blowing device to solve the defects in the prior art.

[0006] The utility model is realized through the following technical solutions:

[0007] A partitioned blowing device comprises a gas distribution device, a blow pipe and a branch pipe connected to the blow pipe, wherein one end of the blow pipe is closed and the other end is for air intake. The branch pipe is divided into groups. The conduction and closing between the blow pipe and the branch pipes are controlled by the gas distribution device, and when the air inlet of any group of branch pipes is connected to the blow pipe, the other groups of branch pipes are closed to the blow pipe.

[0008] When the present application is in use, gas is blown in through the blowpipe, wherein, under the action of the gas distribution device, the air inlet of one group of branch pipes is connected to the blowpipe and the remaining groups of branch pipes are shielded from the blowpipe, so that the gas can only flow through the connected group of gas branch pipes, thereby multiplying the gas flow in the branch pipes and multiplying the soot blowing capacity, so that even if the filtration area of ​​a single filter bag exceeds 5 square meters, thorough soot blowing can still be achieved.

[0009] Preferably, the gas distribution device comprises a distribution orifice plate arranged in the blowpipe, the distribution orifice plate is in contact with the inner wall of the blowpipe and is driven by a driving device to move back and forth along its length direction, and a plurality of gas outlet holes adapted to the branch pipe are provided on the distribution orifice plate, and when any group of gas outlet holes is connected to the corresponding branch pipe, the remaining groups of gas outlet holes are staggered with the air inlet of the branch pipe. When the driving device drives the distribution orifice plate to move, when one group of gas outlet holes is connected to the corresponding branch pipe, the remaining groups of gas outlet holes are staggered with the air inlet of the branch pipe, so that the gas can only flow from the connected group.

[0010] Preferably, the driving device comprises a push rod, which is fixedly connected to the distribution orifice plate, and is driven to move back and forth by a fixed cylinder. The extension and retraction of the cylinder can drive the push rod to move repeatedly.

[0011] Preferably, the cylinder is arranged outside the blowpipe, and the push rod penetrates the blowpipe and the penetration point is slidably sealed. The cylinder is located outside the blowpipe, which is not only convenient for arrangement and maintenance, but also avoids the cylinder from blocking the gas flow, thus ensuring smooth gas flow.

[0012] As a preferred method, it also includes a nozzle, one end of which enters compressed gas, and the other end of which penetrates into the blowpipe and is closed. The nozzle is located in the blowpipe and is connected to a plurality of air outlet pipes. The air outlet pipes are opposite to the branch pipes one by one. The air outlet pipes are blocked by a distribution orifice plate, and the top surface of the distribution orifice plate is in contact with the lower end surface of the air outlet pipe. Compressed gas is introduced into the nozzle, and the nozzle is connected or blocked by the distribution orifice plate and the branch pipe. When the air outlet is connected to the branch pipe, the air outlet pipe is also connected to the branch pipe, so that both compressed gas and ordinary gas can be blown into the branch pipe, further improving the dust removal effect.

[0013] Preferably, the gas distribution device comprises a rotating tube located in the blowpipe, the rotating tube is driven by a driving mechanism to rotate along its axis, the rotating tube is connected to the blowpipe, the outer wall of the rotating tube is in contact with the inner wall of the blowpipe and the air inlet of the branch pipe is blocked by the rotating tube, and a plurality of gas outlets adapted to the branch pipe are provided on the rotating tube, and when any group of gas outlets is connected to the air inlet of the branch pipe, the remaining groups of gas outlets are staggered with the air inlets of the corresponding branch pipes. The gas enters the rotating tube through the blowpipe and flows out from the gas outlet on the rotating tube, and when one group of gas outlets is connected to the air inlet of the branch pipe, the remaining groups of gas outlets are staggered with the air inlets of the corresponding branch pipes, so as to ensure that the gas can only flow from the connected gas outlets to the branch pipes.

[0014] Preferably, the driving mechanism comprises a fixedly arranged rotating cylinder, the rotating shaft of the rotating cylinder is coaxial with and fixedly connected to the rotating tube, and the rotation of the rotating shaft of the rotating cylinder drives the rotation of the rotating tube.

[0015] Preferably, the rotating cylinder is located outside the blowpipe, and the rotating shaft penetrates into the blowpipe and is rotatably connected to the blowpipe through a bearing. The rotating cylinder is located outside the blowpipe, which is not only convenient for arrangement and maintenance, but also avoids the obstruction of the rotating cylinder to the gas flow, thereby ensuring smooth gas flow.

[0016] The beneficial effects of the utility model are as follows: when the filter bag needs to be cleaned, the flow rate of the high-pressure fan or air compressor can double the gas flow rate in the blowpipe branch pipe, and the soot blowing capacity can be doubled. It can fully blow the soot of large-area filter elements, such as pleated filter cartridges and pleated filter bags. At the same time, the soot blowing device is small in size, the entire dust collector device is compact in structure, and the flow field distribution is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a schematic structural diagram of Example 1;

[0019] Figure 2 is a schematic structural diagram of Example 2;

[0020] Figure 3 yes Figure 2 A-direction view;

[0021] Figure 4 It is a structural schematic diagram of Example 3.

[0022] As shown in the figure:

[0023] 1. Blow pipe, 2. Branch pipe, 3. Distribution orifice plate, 4. Air outlet, 5. Cylinder, 6. Rotating pipe, 7. Rotating cylinder, 8. Air outlet, 9. Air bag, 10. High-pressure fan, 11. Push rod, 12. Nozzle, 13. Air outlet pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0025] Embodiment 1:

[0026] A partitioned blowing device, such as Figure 1 As shown. It includes a gas distribution device, a blowpipe 1 and a branch pipe 2 connected to the blowpipe 1. One end of the blowpipe 1 is closed and the other end is connected to the air bag 9. The air inlet of the air bag 9 is fed through a high-pressure blower 10. The branch pipes 2 are divided into groups, and the number of each group is the same and there are two branches. The blowpipe 1 and the branch pipes 2 are connected and blocked by the gas distribution device. When the air inlet of any group of branch pipes 2 is connected to the blowpipe 1, the other groups of branch pipes 2 are blocked from the blowpipe 1.

[0027] The gas distribution device includes a distribution orifice plate 3 arranged in the blow pipe 1, the distribution orifice plate 3 is in contact with the inner wall of the blow pipe 1 and is driven by a driving device to move back and forth along its length direction. An array of gas outlet holes 4 adapted to the branch pipe 2 is opened on the distribution orifice plate 3. When any group of gas outlet holes 4 is connected to the corresponding branch pipe 2, the remaining groups of gas outlet holes 4 are staggered with the gas inlet of the branch pipe 2.

[0028] The driving device includes a push rod 11, which is fixedly connected to the distribution orifice plate 3. The push rod 11 is driven to move back and forth by a fixed cylinder 5. The cylinder 5 is arranged on the outside of the blow pipe 1. The push rod 11 penetrates into the blow pipe 1 and the penetration point is slidingly sealed.

[0029] When the present application is in use, the gas is blown into the air bag 9 through the high-pressure fan 10 and then blown into the blow pipe 1 through the air bag 9. The distribution orifice plate 3 moves in the blow pipe 1, and as the distribution orifice plate 3 moves, only one group of blowing holes can be connected to the branch pipe 2 at a time and the remaining groups of branch pipes 2 are blocked by the distribution orifice plate 3. Therefore, the gas flowing in the blow pipe 1 can only flow through the connected group of gas branch pipes 2, thereby multiplying the gas flow in the branch pipe 2 and multiplying the soot blowing capacity. Therefore, even if the filtration area of ​​a single filter bag exceeds 5 square meters, thorough soot blowing can still be achieved.

[0030] When air is needed to be introduced into another group of branch pipes, the push rod is moved by the cylinder 5, so that the air outlet at the branch pipe can be connected with the branch pipe, and the others are in a blocked state.

[0031] The cylinder 5 is located outside the blowpipe 1, which is not only convenient for arrangement and maintenance, but also can avoid the cylinder 5 from blocking the gas flow, thereby ensuring smooth gas flow.

[0032] The use of the present application can increase the gas flow in the blow pipe 1 branch pipe 2 by multiples when the filter bag needs to be cleaned, and the soot blowing capacity is increased by multiples. It can fully blow soot on large-area filter elements, such as pleated filter cartridges and pleated filter bags. At the same time, the soot blowing device is small in size, the entire dust collector device is compact in structure, and the flow field distribution is reasonable.

[0033] Embodiment 2:

[0034] like Figure 2 and Figure 3 As shown, compared with Example 1, the gas distribution device includes a rotating tube 6 located in the blow pipe 1, the rotating tube 6 is driven by the driving mechanism to rotate along its axis, the rotating tube 6 is connected to the blow pipe 1, the outer wall of the rotating tube 6 is in contact with the inner wall of the blow pipe 1 and the air inlet of the branch pipe 2 is blocked by the rotating tube 6, and an array of air outlets 8 adapted to the branch pipe 2 is opened on the rotating tube 6. When any group of air outlets 8 is connected to the air inlet of the branch pipe 2, the remaining groups of air outlets 8 are staggered with the air inlet of the corresponding branch pipe 2.

[0035] The driving mechanism includes a fixed rotating cylinder 7, the rotating shaft of which is coaxial with and fixedly connected to the rotating tube 6. The rotating cylinder 7 is located outside the blow tube 1, and the rotating shaft penetrates into the blow tube 1 and is rotatably connected to the blow tube 1 through a bearing.

[0036] When the gas distribution device is in use, the gas enters the rotating tube 6 through the blowpipe 1 and since one end of the rotating tube 6 is closed, the gas can only flow out from the gas outlet 8 on the rotating tube 6. When one group of gas outlets 8 is connected to the gas inlet of the branch pipe 2, the remaining groups of gas outlets 8 are staggered with the gas inlets of the corresponding branch pipes 2, thereby ensuring that the gas can only flow into the branch pipe 2 from the connected gas outlets 8.

[0037] When replacing the branch pipe 2 through which gas flows, it is only necessary to rotate the rotary cylinder 7. The rotation of the rotary shaft of the rotary cylinder 7 drives the rotation of the rotary tube 6, so that another group of gas outlets 8 are connected to the branch pipe 2 and the remaining group is shielded from the branch pipe 2.

[0038] The rotating cylinder 7 is located outside the blowpipe 1, which is not only convenient for arrangement and maintenance, but also can avoid the obstruction of the gas flow by the rotating cylinder 7, thereby ensuring smooth gas flow.

[0039] Embodiment 3:

[0040] like Figure 4 As shown, compared with Example 1, it also includes a nozzle 12, one end of the nozzle 12 is connected to the air bag, a valve is provided on the air bag and the air inlet end of the air bag is connected to the compressed gas through the air inlet pipe, a control valve is provided on the air inlet pipe, the other end of the nozzle penetrates into the blow pipe and is closed, the nozzle is located in the blow pipe and is connected to a plurality of outlet pipes on the pipe body, the outlet pipes are opposite to the branch pipes one by one, the outlet pipes are blocked by a distribution orifice plate, and the top surface of the distribution orifice plate is in contact with the lower end surface of the outlet pipe 13.

[0041] Compressed gas passes through the nozzle 12, and the nozzle 12 is connected or blocked by the distribution orifice plate 3 and the branch pipe 2. When the air outlet 4 is connected to the branch pipe 2, the air outlet pipe 13 is also connected to the branch pipe 2, so that the compressed gas enters the branch pipe 2 through the air outlet pipe 13, and the ordinary gas is blown into the branch pipe 2 through the gap between the air outlet pipe 13 and the air outlet 4. The two air flows merge and enter the filter bag, with a strong soot blowing ability, further improving the dust removal effect.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A partitioned blowing device, characterized in that: The invention comprises a gas distribution device, a blowpipe and a branch pipe connected to the blowpipe. One end of the blowpipe is closed and the other end is inlet. The branch pipe is divided into groups. The connection and closing between the blowpipe and the branch pipes are controlled by the gas distribution device. When the air inlet of any group of branch pipes is connected to the blowpipe, the other groups of branch pipes are closed to the blowpipe.

2. The partitioned spraying device according to claim 1 is characterized in that: The gas distribution device includes a distribution orifice plate arranged in the blowpipe, the distribution orifice plate is in contact with the inner wall of the blowpipe and is driven by a driving device to move back and forth along the length direction of the blowpipe. An array of gas outlet holes adapted to the branch pipe is provided on the distribution orifice plate. When any group of gas outlet holes is connected to the corresponding branch pipe, the remaining groups of gas outlet holes are staggered with the gas inlet of the branch pipe.

3. The partitioned spraying device according to claim 2 is characterized in that: The driving device comprises a push rod, which is fixedly connected to the distribution orifice plate and is driven to move back and forth by a fixed cylinder.

4. The partitioned spraying device according to claim 3 is characterized in that: The cylinder is arranged on the outside of the blow pipe, and the push rod penetrates into the blow pipe and the penetration point is slidably sealed.

5. The partitioned spraying device according to claim 4 is characterized in that: It also includes a nozzle, one end of which enters compressed gas, and the other end penetrates into the blowpipe and is closed. The nozzle is located in the blowpipe and is connected to a plurality of air outlet pipes on the pipe body. The air outlet pipes are opposite to the branch pipes one by one, and the air outlet pipes are blocked by a distribution orifice plate.

6. The partitioned spraying device according to claim 1 is characterized in that: The gas distribution device includes a rotating tube located in the blowpipe. The rotating tube is driven by a driving mechanism to rotate along its axis. The rotating tube is connected to the blowpipe. The outer wall of the rotating tube fits the inner wall of the blowpipe and the air inlet of the branch pipe is blocked by the rotating tube. An array of air outlets adapted to the branch pipe is opened on the rotating tube. When any group of air outlets is connected to the air inlet of the branch pipe, the remaining groups of air outlets are staggered with the air inlet of the corresponding branch pipe.

7. The zoned spraying device according to claim 6, characterized in that: The driving mechanism comprises a fixedly arranged rotating cylinder, the rotating shaft of which is coaxial with and fixedly connected to the rotating tube.

8. The zoned spraying device according to claim 7, characterized in that: The rotating cylinder is located at the outer side of the blow pipe, and the rotating shaft penetrates into the blow pipe and is rotatably connected with the blow pipe through a bearing.

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