Blowing cleaning device of bag-type dust collector

Abstract

The utility model provides a blowing cleaning device of a bag-type dust collector, and belongs to the technical field of bag-type dust collection. Comprising a cloth bag cage, a blowing cylinder arranged along the central axis of the cloth bag cage, and a cage cover fixedly arranged at a cage opening of the cloth bag cage, the cage cover is fixedly connected with the cloth bag cage; an air inlet pipe is coaxially arranged on the cage cover, and the outer diameter of the air inlet pipe is consistent with the inner diameter of the blowing cylinder; one end of the blowing cylinder sleeves the air inlet pipe, and the blowing cylinder is rotationally connected with the air inlet pipe; the other end of the blowing cylinder is blocked; a plurality of non-radial spray pipes with the same radial deflection angle are arranged on the circumferential face of the injection cylinder in a staggered mode, and all the spray pipes communicate with the interior of the injection cylinder. According to the utility model, the filter bag can be blown from inside to outside by utilizing the staggered spray pipes, so that the filter bag shakes to clean dust; a nozzle can be further arranged on the spray pipe, airflow sprayed by the nozzle can cover the filter bag, and the airflow outwards from the inside of the filter bag can blow off dust, so that the dust cleaning effect is improved.

Description

Technical Field

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

[0002] There are multiple groups of cylindrical bag cages installed vertically or horizontally in the bag filter. The bag cage is the support of the dust filter bag. It is installed inside the filter bag to prop it up and prevent the filter bag from collapsing. When the dust-laden gas passes through the bag filter, the dust adheres to the outer surface of the filter bag, and the clean gas enters the filter bag and is discharged from the bag opening (cage opening). After the bag filter has been used for some time, the filter bag has a large amount of dust retained, and the filter bag's filtration resistance increases. At this time, the filter bag needs to be cleaned.

[0003] At present, pulse jetting is mostly used to clean filter bags. During cleaning, the pulse valve at the mouth of the bag cage introduces pulse airflow into the filter bag. When the pulse airflow is transmitted along the filter bag, the filter bag is shaken, and the dust on it falls off to complete dust removal. However, when encountering a long filter bag, the cleaning effect on the rear of the filter bag is not ideal due to the attenuation of the pulse airflow transmission. Therefore, a more effective cleaning method is needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a blowing cleaning device for a bag dust collector in view of the deficiencies of the prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A spray cleaning device for a bag-type dust collector comprises a bag-type cage, a spray tube arranged along the central axis of the bag-type cage, and a cage cover fixedly arranged at the cage mouth of the bag-type cage; the cage cover is fixedly connected to the bag-type cage; an air inlet pipe is coaxially arranged on the cage cover, and the outer diameter of the air inlet pipe is consistent with the inner diameter of the spray tube; one end of the spray tube is sleeved on the air inlet pipe, and the spray tube is rotatably connected to the air inlet pipe; the other end of the spray tube is blocked; a plurality of non-radial nozzles with the same radial deflection angle are staggered on the circumferential surface of the spray tube, and the nozzles are all connected to the interior of the spray tube.

[0007] Furthermore, a nozzle is fixedly provided at the end of the nozzle.

[0008] Furthermore, the nozzle is in the shape of a flat bell, and the length direction of the nozzle opening is parallel to the axis of the blowing tube.

[0009] Furthermore, the nozzle is threadably connected to the nozzle pipe.

[0010] Furthermore, the internal air passage of the nozzle is tangent to the inner wall of the blowing tube.

[0011] Furthermore, the blowing tube is provided with multiple layers of the nozzles at intervals along the axial direction, each layer includes two nozzles symmetrically arranged at 180 degrees, and the nozzles between adjacent layers are staggered.

[0012] Furthermore, a connection plate is fixedly provided at the cage opening of the bag cage, and the cage cover is flange-connected to the connection plate.

[0013] Furthermore, a supporting bottom is fixedly provided at the bottom of the bag cage, the blowing tube is rotatably connected to the supporting bottom, and the supporting bottom provides circumferential limitation for the blowing tube.

[0014] Furthermore, the cage cover is provided with a hole for clean gas to flow out.

[0015] Furthermore, the air inlet pipe is connected to an external high-pressure air source.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model has a spray barrel arranged along the axis in the bag cage, and a plurality of staggered nozzles are arranged on the spray barrel, and the nozzles are all arranged obliquely and have the same radial deflection angle. When high-pressure gas is introduced into the spray barrel, the airflow is ejected from the nozzle, thereby driving the spray barrel to rotate at high speed along the axis. At the same time, the sprayed part of the filter bag expands outward, and the unsprayed part automatically shrinks. With the rotation of the spray barrel, the staggered nozzles will make the filter bag expand and shrink continuously, so the filter bag will shake to shake off the dust.

[0018] The nozzle end of the utility model can also be provided with a nozzle, which is in the shape of a flat trumpet, and the airflows sprayed by the nozzles between adjacent layers can cover each other, so that the sprayed airflow can completely cover the filter bag, and the airflow from the inside of the filter bag to the outside can blow off the dust, thereby improving the dust cleaning effect. At the same time, when the staggered nozzles spray the filter bag, the filter bag will still shake and still shake off the dust.

[0019] The utility model has a flange-shaped connection plate fixedly arranged at the cage mouth of the bag cage, and the cage cover is connected to the connection plate flange, and the connection is firmly connected. A coaxial air inlet pipe is fixedly arranged on the cage cover, and the outer diameter of the air inlet pipe is consistent with the inner diameter of the spray tube. The spray tube is sleeved on the air inlet pipe and can rotate along the air inlet pipe; at the same time, a support bottom is arranged at the bottom of the bag cage, and the end of the spray tube is rotatably connected to the support bottom, and the support bottom provides circumferential limit for the spray tube, so that the spray tube will not deviate or shake when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Figure 1: A schematic diagram of the structure of the utility model;

[0022] Figure 2 : A cross-sectional view of the cage cover of the utility model;

[0023] Figure 3 : A cross-sectional view of the nozzle of the utility model;

[0024] Figure 4 : A cross-sectional view of the bottom support of the utility model;

[0025] Among them: 1-bag cage, 11-connecting plate, 12-bottom support, 2-blowing tube, 21-spray pipe, 22-nozzle, 3-cage cover, 31-air inlet pipe. DETAILED DESCRIPTION

[0026] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0027] Example 1: See Figure 1-Figure 4 The purpose of this embodiment is to provide a spray cleaning device for a bag dust collector.

[0028] In the current bag filter, multiple groups of cylindrical bag cages 1 are arranged vertically or horizontally. The bag cage 1 is the support of the dust filter bag, which is arranged inside the filter bag to prop it up and prevent the filter bag from collapsing. When the dust-laden gas passes through the bag filter, the dust adheres to the outer surface of the filter bag, and the clean gas enters the filter bag and is discharged from the bag opening (cage opening). The utility model is used to clean the dust attached to the outside of the filter bag.

[0029] like Figure 1 As shown, the spray cleaning device includes a spray tube 2 arranged inside the bag cage 1 and a cage cover 3 arranged at the cage opening of the bag cage 1.

[0030] like Figure 2 As shown, the spray tube 2 is a hollow cylinder. The spray tube 2 is arranged along the central axis of the bag cage 1 and extends to the bottom of the bag cage 1. The end of the spray tube 2 away from the bag cage 1 is blocked. A plurality of nozzles 21 connected to the inside are arranged obliquely (non-radially) on the surface of the spray tube 2. The axis of the nozzle 21 does not intersect with the axis of the spray tube 2. The nozzles 21 all have the same radial deflection angle. When high-pressure gas is introduced into the spray tube 2, the nozzle 21 sprays air outward, which can drive the spray tube 2 to rotate at high speed along the axis on the one hand, and can spray the filter bag from the inside to the outside on the other hand to clean the dust outside the filter bag.

[0031] like Figure 3 As shown, the axis of the nozzle 21 is perpendicular to the axis of the spray tube 2, and the wall thickness of the nozzle 21 is consistent with the wall thickness of the spray tube 2. The outermost edge of the nozzle 21 is tangent to the outer wall of the spray tube 2, so that the internal airway of the nozzle 21 is tangent to the inner wall of the spray tube 2, so that the nozzle 21 can more easily drive the spray tube 2 to rotate after spraying the air flow.

[0032] The spray tube 2 is provided with multiple layers of spray tubes 21 at intervals along the axial direction. Each layer of spray tubes 21 is provided with two spray tubes 21. The two spray tubes 21 are symmetrically arranged 180 degrees along the axis of the spray tube 2, and the spray tubes 21 between adjacent layers are vertically staggered. In this way, the airflows of the spray tubes 21 between different layers will be staggered and sprayed onto the filter bag (see Figure 3 For example, when the front layer nozzle 21 sprays the filter bag at the 3 o'clock and 9 o'clock positions, the adjacent upper and lower layer nozzles 21 will spray the filter bag at the 12 o'clock and 6 o'clock positions). The sprayed part of the filter bag expands outward, and the unsprayed part automatically shrinks. At the same time, as the spray tube 2 rotates, various parts of the filter bag will continue to expand and shrink, thereby shaking, thereby shaking off the dust.

[0033] like Figure 4 As shown, a support base 12 is provided at the bottom of the bag cage 1, and the end of the spray tube 2 is rotatably connected to the support base 12. The support base 12 provides circumferential limitation for the spray tube 2 to prevent it from deflecting or shaking during rotation.

[0034] like Figure 2 As shown, a flange-shaped connecting plate 11 is fixedly provided at the cage mouth of the bag cage 1, and the cage cover 3 is flange-connected to the connecting plate 11. A hole is hollowed out on the cage cover 3 for clean gas to flow out. At the same time, an air inlet pipe 31 is provided along the axis of the cage cover 3. The air inlet pipe 31 is coaxial with the blowing tube 2. At the same time, the outer diameter of the air inlet pipe 31 is consistent with the inner diameter of the blowing tube 2. The air inlet pipe 31 extends into the blowing tube 2, so that the blowing tube 2 is rotatably connected to the air inlet pipe 31. The air inlet pipe 31 is used to connect to an external high-pressure gas source.

[0035] Example 2: See Figure 1-Figure 4 The blowing cleaning device for the bag dust collector provided in this embodiment mainly makes the following changes compared with Embodiment 1.

[0036] The ends of the nozzles 21 are each provided with a nozzle 22. Figure 2-Figure 3As shown, the nozzle 22 is in the shape of a flat trumpet, and the length direction of its opening is parallel to the axis of the spray tube 2. In this way, the airflow sprayed from the nozzle 22 will be in a planar shape, and the airflows sprayed from the nozzles 22 between adjacent layers can cover each other, so that the spraying airflow can completely cover the filter bag, and the airflow from the inside of the filter bag to the outside can blow off the dust, thereby improving the dust cleaning effect. At the same time, when the staggered nozzles 22 spray the filter bag, the filter bag will still shake and still shake off the dust.

[0037] Preferably, the nozzle 22 and the nozzle pipe 21 are connected by threads, so that the nozzle 22 can be easily removed and replaced with a nozzle of other specifications.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A blowing cleaning device for a bag dust collector, comprising a bag cage, characterized in that: It also includes a blowing tube arranged along the central axis of the bag cage and a cage cover fixedly arranged at the cage opening of the bag cage; The cage cover is fixedly connected to the bag cage; An air inlet pipe is coaxially arranged on the cage cover, and the outer diameter of the air inlet pipe is consistent with the inner diameter of the blowing tube; one end of the blowing tube is sleeved on the air inlet pipe, and the blowing tube is rotatably connected to the air inlet pipe; the other end of the blowing tube is blocked; A plurality of non-radial nozzles with the same radial deflection angle are staggeredly arranged on the circumferential surface of the blowing tube, and the nozzles are all connected to the interior of the blowing tube.

2. The blowing cleaning device for bag dust collector according to claim 1 is characterized in that: The ends of the spray pipes are all fixedly provided with nozzles.

3. The blowing cleaning device for bag dust collector according to claim 2 is characterized in that: The nozzle is in a flat bell-mouth shape, and the length direction of the nozzle opening is parallel to the axis of the blowing tube.

4. The blowing cleaning device for bag dust collector according to claim 2, characterized in that: The nozzle is threadedly connected to the nozzle pipe.

5. The blowing cleaning device for bag dust collector according to claim 1, characterized in that: The internal air passage of the nozzle is tangent to the inner wall of the blowing tube.

6. The blowing cleaning device for bag dust collector according to claim 1, characterized in that: The blowing tube is provided with multiple layers of the nozzles at intervals along the axial direction, each layer includes two nozzles symmetrically arranged at 180 degrees, and the nozzles between adjacent layers are staggered.

7. The spray cleaning device for bag dust collector according to claim 1, characterized in that: A connection plate is fixedly arranged at the cage opening of the bag cage, and the cage cover is flange-connected to the connection plate.

8. The blowing cleaning device for bag dust collector according to claim 1, characterized in that: A supporting bottom is fixedly arranged at the bottom of the bag cage, the blowing tube is rotatably connected to the supporting bottom, and the supporting bottom provides circumferential limitation for the blowing tube.

9. The blowing cleaning device for bag dust collector according to claim 1, characterized in that: The cage cover is provided with a hole for clean gas to flow out.

10. The spray cleaning device for bag dust collector according to claim 1, characterized in that: The air inlet pipe is connected to an external high-pressure air source.

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