Negative pressure type cyclone dust collector

Abstract

The utility model provides a negative pressure type cyclone dust collector which comprises a stock bin, and materials are temporarily stored in the stock bin. The lower end of the conveying bent pipe is connected with the bottom of the stock bin; the cyclone dust collector is connected with the conveying bent pipe and receives the materials conveyed by the conveying bent pipe; the main conveying pipeline is arranged at the bottom of the cyclone dust collector; the upper end of the stirrer is connected with the main conveying pipeline, and the stirrer is used for stirring the materials; the material returning system comprises a centrifugal pipeline connected with the cyclone dust collector, the centrifugal pipeline is connected with a pulse dust collector, the lower end of the pulse dust collector is connected with a material returning pipeline, and the lower end of the material returning pipeline is connected with a stirring machine, and the environment-friendly dust collector has the advantages that dust collection can be achieved, the environment-friendly effect is good, and the environment-friendly dust collector has no requirement for a site.

Description

Technical Field

[0001] The utility model relates to the technical field of cyclone dust collectors, in particular to a negative pressure cyclone dust collector. Background Art

[0002] A cyclone dust collector is a mechanical dust collector suitable for removing non-sticky and non-fibrous dust. It is generally used to capture particles with a particle size of 5-15μm. The dust removal efficiency can reach 80%. It is mostly used in pre-dust removal and multi-stage dust removal systems for dust-containing gases in industries such as steel, building materials, metallurgy, and boilers. The working principle of a cyclone dust collector is that the dust-containing gas enters the dust collector tangentially through the air inlet pipe, changes from linear motion to rotational motion, and spirals downward under the influence of fluid pressure and the shape of the inner wall of the cylinder, moving toward the cone. The dust-containing gas generates centrifugal force during the rotation process, causing dust particles heavier than the gas to overcome the air flow resistance and move toward the wall. Once the particles come into contact with the wall, they lose inertia and slide down the wall surface driven by gravity and the rotating fluid, and fall into the ash hopper. After the rotating downward airflow reaches a certain position near the bottom of the cone, it turns back and moves upward in the dust collector in the same direction of rotation, spirals upward on the inside of the downward airflow, and is finally discharged from the exhaust pipe together with some unseparated fine particles. The downward airflow on the outer side is usually called the external vortex flow, and the upward airflow on the inner side is called the internal vortex flow.

[0003] The cyclone dust collector in the prior art has some shortcomings, for example, the environmental protection effect needs to be improved, and the spiral conveying method is generally adopted, which is easy to generate dust in the workplace. Especially for the conveying of relatively light materials, more dust is generated.

[0004] The patent publication number CN219815726U was retrieved, and the patent name was a public material of a dust collection device for a grain machine, which specifically disclosed a dust collection device for a grain machine, including a grain machine, a dust cover was arranged on the top of the grain machine, a cyclone dust collector and a pulse dust collector were also arranged on the side of the grain machine, a first air duct was connected to the top of the dust cover and the air inlet of the cyclone dust collector, the cyclone dust collector was also connected to a negative pressure air duct, a negative pressure fan was installed at the outlet of the negative pressure air duct, and the negative pressure fan and the pulse dust collector were connected to each other. The air inlet of the pulse dust collector is connected to a second air duct. Compared with the prior art, the beneficial effects of the utility model are as follows: the dust generated by the feed machine is sucked into the cyclone dust collector, and the cyclone dust collector removes the larger dust. At the same time, the large dust can absorb most of the moisture, which can reduce the dust and moisture entering the pulse dust collector, thereby improving the "bag sticking" phenomenon caused by a large amount of dust adsorbed on the bag and the phenomenon of a "porridge"-like dust layer on the bag surface caused by moisture, thereby increasing the service life of the pulse dust collector bag.

[0005] Through the analysis of the above-mentioned public materials, it can be known that the service life of the pulse dust collector bag can be improved, but the environmental protection requirements for the workplace are poor. In addition, this method has requirements for site settings, which is not conducive to the installation of dust removal equipment. Utility Model Content

[0006] In view of this, the utility model provides a negative pressure cyclone dust collector, which can not only achieve dust removal, but also has good environmental protection effect and has no requirements for the site.

[0007] In order to solve the above technical problems, the utility model provides a negative pressure cyclone dust collector, comprising:

[0008] A silo, in which materials are temporarily stored;

[0009] A conveying elbow, the lower end of which is connected to the bottom of the silo;

[0010] A cyclone dust collector, the cyclone dust collector is connected to the conveying elbow and receives the material conveyed by the conveying elbow;

[0011] A main conveying pipeline, wherein the main conveying pipeline is arranged at the bottom of the cyclone dust collector;

[0012] A mixer, the upper end of which is connected to the main conveying pipeline and is used to mix the materials;

[0013] The material return system comprises a centrifugal pipe connected to a cyclone dust collector, the centrifugal pipe is connected to a pulse dust collector, the lower end of the pulse dust collector is connected to a material return pipe, and the lower end of the material return pipe is connected to a mixer.

[0014] Furthermore, the lower end of the conveying elbow is connected to the bottom of the silo through a flange, and the upper end is connected to the inlet end of the cyclone dust collector through a flange.

[0015] Furthermore, the cyclone dust collector is a centrifugal silo, the upper air outlet is connected to a centrifugal pipeline, and the bottom of the cyclone dust collector is connected to the main conveying pipeline through a flange.

[0016] Furthermore, a centrifugal fan is installed on the pulse dust collector, and the centrifugal fan vacuums the interior of the pulse dust collector and sucks dust into the pulse dust collector.

[0017] Furthermore, the upper end of the return pipe is connected to the bottom of the pulse dust collector through a flange, and the lower end of the return pipe is connected to the feed end of the mixer through a flange.

[0018] Furthermore, the upper portion of the centrifugal pipe is a bent pipe structure, which is a telescopic pipe.

[0019] Furthermore, both ends of the conveying curved pipe are curved pipe structures, and the structures are telescopic pipes.

[0020] The beneficial effects of the above technical solution of the utility model are as follows:

[0021] 1. It can realize dust removal. The generated dust can be removed through cyclone dust collector and pulse dust collector.

[0022] 2. Good environmental protection effect, no requirements for the site, by using negative pressure to transport light materials, the site can be dust-free. In addition, some sections on the conveying pipeline and centrifugal pipeline adopt telescopic pipe structure, which can meet the needs of the site. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 for Figure 1 A top view of

[0025] Figure 3 for Figure 1 Stereoscopic image of

[0026] Figure 4 for Figure 2 Cross-section of the middle AA;

[0027] In the figure: 1. Silo; 2. Conveying elbow; 3. Cyclone dust collector; 4. Centrifugal pipe; 5. Pulse dust collector; 6. Main conveying pipe; 7. Return pipe; 8. Mixer; 9. Centrifugal fan. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-4 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0029] like Figure 1-4 As shown: Example

[0030] A negative pressure cyclone dust collector comprises a silo 1 in which materials are temporarily stored; a conveying elbow 2, the lower end of which is connected to the bottom of the silo 1; a cyclone dust collector 3, which is connected to the conveying elbow 2 and receives materials conveyed by the conveying elbow 2; a main conveying pipeline 6, which is arranged at the bottom of the cyclone dust collector 3; a mixer 8, the upper end of which is connected to the main conveying pipeline 6 and stirs the materials; a return system, which comprises a centrifugal pipeline 4 connected to the cyclone dust collector 3, the centrifugal pipeline 4 is connected to a pulse dust collector 5, the lower end of which is connected to a return pipeline 7, and the lower end of which is connected to the mixer 8.

[0031] In this embodiment, the silo 1 is used to temporarily store materials. The conveying elbow 2 is connected to the silo 1. The materials are transported to the cyclone dust collector 3 through the conveying elbow 2. After the cyclone dust collector 3, the dust is extracted by the centrifugal pipe 4, and the materials flow from the main conveying pipe 6 to the mixer 8. A centrifugal fan is installed on the pulse dust collector 5. By using negative pressure, the dust is sucked into the pulse dust collector 5 for dust removal. The negative pressure method can solve the problem of dust generation around the equipment. Then a return system is installed on the pulse dust collector 5 to return the dust-removed materials to the mixer 8. Example

[0032] The lower end of the conveying elbow 2 is connected to the bottom of the silo 1 through a flange, and the upper end is connected to the inlet end of the cyclone dust collector 3 through a flange.

[0033] Different from the above-mentioned embodiment, in this embodiment, the design of the conveying elbow 2 can solve the problem of site adaptability. If spiral conveying or hard pipes are used, there are certain requirements on the site, such as site size, equipment placement, etc. Example

[0034] The cyclone dust collector 3 is a centrifugal silo 1, and the upper air outlet is connected to a centrifugal pipeline 4, and the bottom of the cyclone dust collector 3 is connected to the main conveying pipeline 6 through a flange.

[0035] Different from the above-mentioned embodiment, in this embodiment, the cyclone dust collector 3 is also a vacuum chamber, and the materials are sucked into the cyclone dust collector 3 by negative pressure. Example

[0036] The pulse dust collector 5 is equipped with a centrifugal fan, which evacuates the interior of the pulse dust collector 5 and sucks dust into the pulse dust collector 5 .

[0037] Different from the above-mentioned embodiment, in this embodiment, the centrifugal fan provides the power for vacuuming, vacuuming the pulse dust collector 5, and then through the centrifugal pipe 4, the cyclone dust collector 3 is also vacuumed. Example

[0038] The upper end of the return pipe 7 is connected to the bottom of the pulse dust collector 5 through a flange, and the lower end of the return pipe 7 is connected to the feed end of the mixer 8 through a flange.

[0039] Different from the above-mentioned embodiment, in this embodiment, the return pipe 7 is used to send the dust-removed material into the mixer 8, and the material passing through the return pipe 7 is in the minority. Example

[0040] The upper part of the centrifugal pipe 4 is a bent pipe structure, which is a telescopic pipe.

[0041] Different from the above-mentioned embodiment, in this embodiment, the centrifugal pipe 4 is configured as a telescopic pipe to cope with different sites. Example

[0042] Both ends of the conveying elbow 2 are elbow structures, and the structures are telescopic tubes.

[0043] Different from the above-mentioned embodiment, in this embodiment, both ends of the conveying pipeline are telescopic pipe structures, which have wider site adaptability and do not require spiral conveying.

[0044] The working method (or working principle) of the utility model:

[0045] When this technology is working, it adopts negative pressure for lighter materials, which can meet environmental protection requirements and will not generate dust in the workplace. Because the material is transported by suction, the generated dust will not escape. In this technology, a centrifugal fan is installed on the pulse dust collector 5. In addition, the pulse dust collector 5 is a device in the return system, and the lower end is connected to the mixer 8, which can transport a small amount of material to the mixer 8, which can save materials and be environmentally friendly.

[0046] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A negative pressure cyclone dust collector, characterized in that: include, A silo (1), wherein materials are temporarily stored in the silo (1); A conveying elbow (2), the lower end of which is connected to the bottom of the silo (1); A cyclone dust collector (3), the cyclone dust collector (3) being connected to the conveying elbow (2) and receiving materials conveyed by the conveying elbow (2); A main conveying pipeline (6), wherein the main conveying pipeline (6) is arranged at the bottom of the cyclone dust collector (3); A mixer (8), the upper end of which is connected to the main conveying pipeline (6) and is used to mix the materials; A return material system, the return material system comprises a centrifugal pipe (4) connected to a cyclone dust collector (3), the centrifugal pipe (4) is connected to a pulse dust collector (5), the lower end of the pulse dust collector (5) is connected to a return material pipe (7), and the lower end of the return material pipe (7) is connected to a mixer (8).

2. A negative pressure cyclone dust collector according to claim 1, characterized in that: The lower end of the conveying elbow (2) is connected to the bottom of the silo (1) through a flange, and the upper end is connected to the inlet end of the cyclone dust collector (3) through a flange.

3. A negative pressure cyclone dust collector according to claim 2, characterized in that: The cyclone dust collector (3) is a centrifugal silo (1), the upper air outlet of which is connected to a centrifugal pipeline (4), and the bottom of the cyclone dust collector (3) is connected to a main conveying pipeline (6) via a flange.

4. A negative pressure cyclone dust collector according to claim 3, characterized in that: The pulse dust collector (5) is equipped with a centrifugal fan, which evacuates the interior of the pulse dust collector (5) and sucks dust into the pulse dust collector (5).

5. A negative pressure cyclone dust collector according to claim 4, characterized in that: The upper end of the return pipe (7) is connected to the bottom of the pulse dust collector (5) through a flange, and the lower end of the return pipe (7) is connected to the feed end of the mixer (8) through a flange.

6. A negative pressure cyclone dust collector according to claim 5, characterized in that: The upper part of the centrifugal pipeline (4) is a bent pipe structure, which is a telescopic pipe.

7. A negative pressure cyclone dust collector according to claim 6, characterized in that: Both ends of the conveying curved pipe (2) are curved pipe structures, which are telescopic pipes.

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