Injection pipe and bag-type dust collector

Abstract

The utility model relates to the technical field of boiler dust removal equipment, and discloses a blowing pipe and a bag-type dust remover, the blowing pipe comprises a pipe body, an anticorrosive coating and a plurality of nozzles; according to the bag-type dust collector, the pipe body of the blowing pipe and the nozzle are arranged to be of the integrally-formed structure so that the nozzle can be prevented from falling off, the peripheral side wall of the blowing pipe is coated with the anti-corrosion coating so that the blowing pipe can be prevented from being abraded in the high-temperature and corrosion environment, the bag-type dust collector is simple in structure, and the bag-type dust collector can be conveniently disassembled only by disassembling the blowing pipe. And the surface anti-corrosion coating can be maintained and supplemented, so that the maintenance cost and the spare part cost can be reduced.

Description

Technical Field

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

[0002] The nozzles of existing bag dust collectors are easily damaged due to being in a high temperature and corrosive environment for a long time. In order to facilitate replacement, the nozzles are usually riveted and installed on the spray pipe.

[0003] Although this method makes it easier to replace the nozzle and can reduce the replacement frequency of the injection pipe, before assembly, it is necessary to open a positioning hole in the injection pipe in advance to install the nozzle, which leads to a weak pipe wall at the connection between the injection pipe and the nozzle. When the bag dust collector is working, the high-temperature, corrosive, and water-containing flue gas generated by the boiler will flush the injection pipe for a long time, and the nozzle on the injection pipe will become loose or even fall off, resulting in the nozzle on the injection pipe not being able to completely cover the positioning hole, and there is a hidden danger that the injection air leakage will affect the injection effect, which in turn affects the dust removal effect, causing the pressure drop to exceed the standard during boiler operation, a decrease in load capacity, and an increase in system power consumption. Utility Model Content

[0004] The utility model aims to provide a spray pipe and a bag dust collector, which can not only reduce the damage and falling off of the nozzle, but also have a simple structure and can reduce the inspection and maintenance costs and spare parts costs.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a blowing pipe, comprising: a pipe body, an anti-corrosion coating and a plurality of nozzles; the pipe body extends along a first direction, and the interior of the pipe body has a blowing chamber; the plurality of nozzles are arranged at intervals on the outer peripheral side wall of the pipe body along the first direction, the plurality of nozzles and the pipe body are an integrally formed structure, and the plurality of nozzles are all connected to the blowing chamber; the anti-corrosion coating is laid on the outer peripheral side wall of the pipe body and the outer peripheral side wall of the nozzle.

[0006] Optionally, the nozzle is cylindrical and extends along the second direction, the distance from the end of the nozzle away from the tube body in the second direction to the tube body is H, 8mm≤H≤10mm, and the interior of the nozzle has an output cavity, which is connected to the blowing cavity.

[0007] Optionally, the two ends of the tube body in the first direction are respectively a first end and a second end, and among the multiple nozzles, the one adjacent to the first end is the first nozzle, and the one adjacent to the second end is the second nozzle, the distance from the first nozzle to the first end in the first direction is L1, and the distance from the second nozzle to the second end in the first direction is L2, L1>0mm, L2>0mm.

[0008] Optionally, it also includes a support plate, which includes a first extension portion and a second extension portion connected to each other, the first extension portion extends along the second direction and is installed at one end of the blow pipe in the first direction, the second extension portion extends along the first direction, and the second extension portion is provided with a mounting hole for fixation.

[0009] In order to achieve the same purpose, the utility model also provides a bag dust collector, including: a bag, an air collecting box, a connecting pipe and the blowing pipe as described above, wherein the blowing pipe is located inside the bag, and one end of the tube body can be detachably mounted on the bag, and a connecting port is provided on the bag, one end of the connecting pipe passes through the connecting port and is detachably connected to the other end of the tube body, and the other end of the connecting pipe is connected to the air collecting box.

[0010] Optionally, it also includes an air collecting cover, the air collecting box also has an air inlet, and the air collecting cover can be detachably mounted on the air collecting box and covers the air inlet.

[0011] Optionally, it also includes a first connecting member and a second connecting member, having a first connecting cavity and a second connecting cavity that are connected to each other, the second connecting member having a third connecting cavity, one end of the tube body is inserted into the first connecting cavity, the second connecting member is clamped in the second connecting cavity, one end of the connecting tube is inserted into the third connecting cavity, and the first connecting cavity, the second connecting cavity and the third connecting cavity are connected in sequence.

[0012] Optionally, a bracket is further provided inside the cloth bag, and one end of the tube body is mounted on the bracket.

[0013] Compared with the prior art, the blow pipe and bag dust collector in the embodiment of the utility model have the following beneficial effects: the pipe body and the nozzle of the blow pipe are arranged as an integrally formed structure to avoid the nozzle from falling off, and the anti-corrosion coating is applied on the outer peripheral side wall of the blow pipe to avoid the wear of the blow pipe in a high temperature and corrosive environment, and the bag dust collector has a simple structure, and it only needs to disassemble the blow pipe to maintain and replenish the surface anti-corrosion coating, which can reduce the inspection and maintenance costs and spare parts costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the blowing pipe of the embodiment of the utility model;

[0015] Figure 2 It is an embodiment of the utility model Figure 1 The enlarged view of point A in the middle;

[0016] Figure 3 is a schematic diagram of the bag dust collector according to an embodiment of the utility model;

[0017] Figure 4 It is a schematic diagram of the connection structure of the tube body, the first connecting piece, the second connecting piece and the connecting pipe in an embodiment of the utility model.

[0018] In the figure, 1, blowing tube; 11, tube body; 111, blowing chamber; 112, first end; 113, second end; 12, nozzle; 121, output chamber; 13, first nozzle; 14, second nozzle; 15, support plate; 151, first extension portion; 152, second extension portion; 2, cloth bag; 3, air collecting box; 4, connecting pipe; 5, air collecting cover; 6, first connecting piece; 61, first connecting chamber; 62, second connecting chamber; 7, second connecting piece; 71, third connecting chamber; 8, bracket; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] like Figure 1 As shown, a preferred embodiment of the utility model embodiment is a blowing pipe 1, comprising: a pipe body 11, an anti-corrosion coating and a plurality of nozzles 12; the pipe body 11 extends along a first direction X, and the interior of the pipe body 11 has a blowing chamber 111; the plurality of nozzles 12 are arranged at intervals along the first direction X on the outer peripheral side wall of the pipe body 11, the plurality of nozzles 12 and the pipe body 11 are an integrally formed structure, and the plurality of nozzles 12 are all connected to the blowing chamber 111; the anti-corrosion coating is laid on the outer peripheral side wall of the pipe body 11 and the outer peripheral side wall of the nozzle 12.

[0023] Based on the above scheme, the tube body 11 and the nozzle 12 of the blow pipe 1 are set as an integrally formed structure to prevent the nozzle 12 from falling off, and an anti-corrosion coating is applied on the outer peripheral side wall of the blow pipe 1 to prevent the blow pipe 1 from wearing in a high temperature and corrosive environment.

[0024] In this embodiment, the anti-corrosion coating is made of silicone material to ensure that the corrosion resistance of the injection pipe 1 meets the requirements.

[0025] like Figure 1 As shown, in order to improve the dust removal effect, the nozzle 12 is cylindrical and extends along the second direction Y. The distance between the end of the nozzle 12 away from the tube body 11 in the second direction Y is H, 8mm≤H≤10mm. The interior of the nozzle 12 has an output cavity 121, and the output cavity 121 is connected to the blowing cavity 111. Compared with the structure of narrow upper and wide lower in the existing riveting process, the dust removal effect can be improved, and it is also convenient to correspond to the relevant structure on the cloth bag 2, which is convenient for positioning during production.

[0026] In one embodiment, the plurality of nozzles 12 are evenly distributed on the tube body 11 .

[0027] In one embodiment, the plurality of nozzles 12 are evenly distributed on both sides of the center point of the tube body 11 in the first direction X, and the plurality of nozzles 12 on the same side are evenly spaced, with an interval of 149.9 mm-150.1 mm, and the distance from the nozzle 12 adjacent to the center point to the center point is 119.5 mm-120.5 mm. During the production process, the blow pipe 1 and the cloth bag 2 are adapted by adjusting the above data.

[0028] like Figure 1 As shown, in order to ensure the dust removal effect, the two ends of the tube body 11 in the first direction X are respectively a first end 112 and a second end 113. Among the multiple nozzles 12, the first nozzle 13 is adjacent to the first end 112, and the second nozzle 14 is adjacent to the second end 113. The distance from the first nozzle 13 to the first end 112 in the first direction X is L1, and the distance from the second nozzle 14 to the second end 113 in the first direction X is L2, L1>0mm, L2>0mm, by leaving a distance between the first end 112 and the first nozzle 13, disturbance of the dust removal gas in the first nozzle 13 is avoided; by leaving a distance between the second nozzle 14 and the second end 113, impact turbulence between the dust removal gas and the second end 113 is avoided.

[0029] like Figure 2As shown, in order to facilitate installation, it also includes a support plate 15, and the support plate 15 includes a first extension portion 151 and a second extension portion 152 connected to each other, the first extension portion 151 extends along the second direction Y and is installed at one end of the blow pipe 1 in the first direction X, the second extension portion 152 extends along the first direction X, and the second extension portion 152 is provided with a mounting hole for fixation.

[0030] like Figure 3 As shown, a bag dust collector of a preferred embodiment of the utility model comprises: a bag 2, an air collecting box 3, a connecting pipe 4 and the blowing pipe 1 as mentioned above, wherein the blowing pipe 1 is located inside the bag 2, and one end of the tube body 11 is detachably mounted on the bag 2, a connecting port is provided on the bag 2, one end of the connecting pipe 4 is detachably connected to the other end of the tube body 11 through the connecting port, and the other end of the connecting pipe 4 is connected to the air collecting box 3.

[0031] Based on the above solution, the bag filter has a simple structure. It only needs to dismantle the injection pipe 1 to maintain and replenish the surface anti-corrosion coating, which can reduce the inspection and maintenance costs and spare parts costs.

[0032] like Figure 4 As shown, for ease of use, an air collecting cover 5 is also included. The air collecting box 3 also has an air inlet. The air collecting cover 5 can be detachably installed on the air collecting box 3 and covers the air inlet.

[0033] like Figure 3 and Figure 4 As shown, in order to be able to adapt to pipe bodies 11 of different specifications, it also includes a first connecting piece 6 and a second connecting piece 7, which have a first connecting cavity 61 and a second connecting cavity 62 that are connected to each other, and the second connecting piece 7 has a third connecting cavity 71. One end of the pipe body 11 is inserted into the first connecting cavity 61, and the second connecting piece is clamped in the second connecting cavity 62. One end of the connecting pipe 4 is inserted into the third connecting cavity 71. The first connecting cavity 61, the second connecting cavity 62 and the third connecting cavity 71 are connected in sequence to realize the connection between the connecting pipe 4 and the pipe body 11. When the specifications need to be changed, the specifications of the connecting pipe 4 and the air collecting box 3 do not need to be changed, and only the specifications of the pipe body 11 and the connecting piece 6 need to be changed. In addition, the setting of the connecting piece 6 also facilitates the connection between the pipe body 11 and the connecting pipe 4.

[0034] like Figure 4 As shown, in order to facilitate installation, a bracket 8 is further provided inside the cloth bag 2 , and one end of the tube body 11 is installed on the bracket 8 .

[0035] In this embodiment, the second extension portion 152 of the support plate 15 is mounted on the bracket 8 by bolts to achieve the installation of the tube body 11 .

[0036] In summary, the embodiments of the utility model provide a blow pipe and a bag dust collector, which arrange the tube body 11 and the nozzle 12 of the blow pipe 1 as an integrally formed structure to prevent the nozzle 12 from falling off, and apply an anti-corrosion coating on the outer peripheral side wall of the blow pipe 1 to prevent the blow pipe 1 from being worn in a high temperature and corrosive environment. The bag dust collector has a simple structure, and it only needs to disassemble the blow pipe 1 to maintain and replenish the surface anti-corrosion coating, which can reduce the inspection and maintenance costs and spare parts costs.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A blowing tube, It is characterized in that include: pipe body, anti-corrosion coating and multiple nozzles; The tube body extends along a first direction, and a blowing cavity is formed inside the tube body; The plurality of nozzles are arranged at intervals on the outer peripheral side wall of the tube body along the first direction, the plurality of nozzles and the tube body are an integrally formed structure, and the plurality of nozzles are all connected to the blowing chamber; The anti-corrosion coating is laid on the outer peripheral side wall of the pipe body and the outer peripheral side wall of the nozzle.

2. The blowing tube according to claim 1, It is characterized in that The nozzle is cylindrical and extends along the second direction. The distance between the end of the nozzle away from the tube body and the tube body in the second direction is H, 8mm≤H≤10mm. The interior of the nozzle has an output cavity, which is connected to the blowing cavity.

3. The blowing tube according to claim 1, It is characterized in that The two ends of the tube body in the first direction are respectively a first end and a second end. Among the multiple nozzles, the one adjacent to the first end is the first nozzle, and the one adjacent to the second end is the second nozzle. The distance from the first nozzle to the first end in the first direction is L1, and the distance from the second nozzle to the second end in the first direction is L2, L1>0mm, L2>0mm.

4. The blowing tube according to claim 1, It is characterized in that It also includes a support plate, which includes a first extension portion and a second extension portion connected to each other, the first extension portion extends along the second direction and is installed at one end of the blowing pipe in the first direction, the second extension portion extends along the first direction, and the second extension portion is provided with a mounting hole for fixing.

5. A bag dust collector, It is characterized in that include: A cloth bag, an air collecting box, a connecting pipe and a blow pipe as described in any one of claims 1 to 4, wherein the blow pipe is located inside the cloth bag, and one end of the tube body is detachably mounted on the cloth bag, a connecting port is provided on the cloth bag, one end of the connecting pipe passes through the connecting port and is detachably connected to the other end of the tube body, and the other end of the connecting pipe is connected to the air collecting box.

6. The bag filter according to claim 5, It is characterized in that It also includes an air collecting cover, the air collecting box also has an air inlet, and the air collecting cover can be detachably installed on the air collecting box and covers the air inlet.

7. The bag filter according to claim 5, It is characterized in that It also includes a first connecting member and a second connecting member, having a first connecting cavity and a second connecting cavity connected to each other, the second connecting member having a third connecting cavity, one end of the tube body is inserted into the first connecting cavity, the second connecting member is clamped in the second connecting cavity, one end of the connecting tube is inserted into the third connecting cavity, and the first connecting cavity, the second connecting cavity and the third connecting cavity are connected in sequence.

8. The bag filter according to claim 5, It is characterized in that A bracket is also provided inside the cloth bag, and one end of the tube body is mounted on the bracket.

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