Diffusion type cyclone separator

Abstract

The utility model discloses a diffusion type cyclone separator which comprises an upper cylinder body and a lower cylinder body detachably connected with the upper cylinder body, a gas collection section is arranged in the upper cylinder body in a matched mode, a filter screen is arranged at a gas collection inlet in the bottom of the gas collection section, and an exhaust pipe at the top of the gas collection section is connected with an electrostatic dust collector. Compared with the prior art, secondary filtering dust removal is carried out through the filter screen, then the dust enters the gas collection section from the gas collection inlet in the bottom of the gas collection section, is discharged into the electrostatic dust remover through the exhaust pipe, is subjected to electrostatic dust removal again and then is discharged, and the dust removal effect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of gas separation technology, specifically to a diffusion cyclone separator. Background Technology

[0002] The diffusion cyclone separator is a high-efficiency gas-solid separation device based on the centrifugal separation principle. Its core advantage lies in its ability to significantly improve the collection efficiency of fine particles by traditional cyclone separators through structural optimization and flow field design, making it particularly suitable for industrial applications with strict requirements for dust emissions.

[0003] For example, CN217527868U discloses a diffusion-type cyclone separator, including a main cylinder. The main cylinder includes: an upper cylinder with an air inlet and an air outlet; the upper cylinder is a conical cylinder with an upper port diameter smaller than its lower port diameter; and a lower cylinder with a powder outlet; the upper end of the lower cylinder is connected to the lower end of the upper cylinder, the lower cylinder is a conical cylinder with an upper port diameter larger than its lower port diameter. The separator also includes a gas collecting cylinder, which is disposed within the main cylinder. The main cylinder and the gas collecting cylinder form an outer swirling zone, and the gas collecting cylinder forms an inner swirling zone. The air inlet is connected to the outer swirling zone. The gas collecting cylinder has a gas collecting inlet at its lower end and a gas collecting outlet at its upper end. The gas collecting outlet is connected to the air outlet. The gas collecting cylinder includes a conical gas collecting section. The upper port diameter of the gas collecting section is smaller than its lower port diameter. The lower end of the gas collecting section forms a gas collecting inlet. The gas collecting section is at least partially located inside the upper cylinder.

[0004] The aforementioned diffusion cyclone separator uses a conical gas collection section inside the upper cylinder to physically separate the outer cyclone flow zone used for separation from the inner cyclone flow zone used for air outlet. However, a small amount of dust will still enter the gas collection section with the gas, resulting in a relatively poor dust removal effect. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a diffusion cyclone separator to solve the problem that a small amount of dust will enter the gas collection section with the gas, resulting in a relatively poor dust removal effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a diffusion cyclone separator, comprising an upper cylinder and a lower cylinder detachably connected thereto, wherein an air collecting section is provided inside the upper cylinder, a filter screen is provided at the air collecting inlet at the bottom of the air collecting section, and an electrostatic precipitator is connected to the exhaust pipe at the top of the air collecting section.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] In this diffusion-type cyclone separator, after the dust-laden gas enters the upper cylinder for separation, the dust falls into the lower cylinder and is discharged. The gas rises and enters the filter screen for secondary filtration and dust removal. Then, it enters the gas collection section from the gas collection inlet at the bottom of the gas collection section and is discharged into the electrostatic precipitator through the exhaust pipe for electrostatic dust removal again before being discharged, which greatly improves the dust removal effect. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0010] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0011] Figure 3 for Figure 1 A partial sectional view;

[0012] Figure 4 for Figure 1 A schematic diagram of the structure of the gas gathering section.

[0013] The reference numerals in the accompanying drawings include: upper cylinder 1, lower cylinder 2, air collection section 3, contraction structure 31, filter screen 4, electrostatic precipitator 5, air inlet pipe 6, air return pipe 7, regulating valve 8, detachable connector 9, locking block 91, adjustable support frame 10, base plate 101, support plate 102, adjusting handle 103, connecting part 104, and collection bucket 11. Detailed Implementation

[0014] The present invention will be further described in detail below through specific embodiments:

[0015] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown in the figure, this utility model embodiment proposes a diffusion cyclone separator, including an upper cylinder 1 and a lower cylinder 2 detachably connected thereto. An air collecting section 3 is provided inside the upper cylinder 1. A filter screen 4 is provided at the air collecting inlet at the bottom of the air collecting section 3, and an electrostatic precipitator 5 is connected to the exhaust pipe at the top of the air collecting section 3.

[0016] In this embodiment, the upper cylinder 1 and the lower cylinder 2 are symmetrically arranged and both are conical. The upper cylinder 1 and the lower cylinder 2 are detachably connected by multiple bolts, which facilitates disassembly for periodic maintenance. The electrostatic precipitator 5 is an existing structure.

[0017] The upper cylinder 1 is connected to an air inlet pipe 6 that is tangent to it, and the inner wall of the air inlet pipe 6 has an acceleration spiral groove formed along its axial direction.

[0018] The air inlet pipe 6 guides the dust-laden gas into the upper cylinder 1. Under the action of centrifugal force, the gas and dust in the dust-laden gas are separated. The dust falls to the bottom of the lower cylinder 2 and is discharged from the dust discharge pipe at the bottom of the lower cylinder 2. The separated gas rises in the lower cylinder 2 and is filtered and dusted again through the filter screen 4. Then it enters the gas collection section 3 and is discharged into the electrostatic precipitator 5 through the exhaust pipe for electrostatic dust removal again before being discharged, which greatly improves the dust removal effect.

[0019] The accelerating spiral grooves arranged on the inner wall of the air inlet pipe 6 can accelerate the dust-laden gas, which is beneficial to improving the separation effect between the gas and dust in the dust-laden gas.

[0020] To further improve the dust removal effect, a return air pipe 7 is provided between the air inlet pipe 6 and the electrostatic precipitator 5, and a regulating valve 8 is provided on the return air pipe 7. The regulating valve 8 is used to open or close the return air pipe 7 as needed. When the return air pipe 7 is opened, the gas in the electrostatic precipitator 5 can be guided back into the upper cylinder 1. On the one hand, it can be used for cyclone separation again, and on the other hand, it can guide the dust-laden gas introduced into the air inlet pipe 6 to accelerate the speed at which the dust-laden gas enters the upper cylinder 1 for cyclone separation.

[0021] To facilitate the replacement and cleaning of filter screen 4, such as Figure 2 and Figure 3 As shown, according to another embodiment of the present invention, in a diffusion cyclone separator, the filter screen 4 is detachably connected to the air inlet at the bottom of the air collection section 3 via a detachable connector 9. The detachable connector 9 includes a mounting groove and a locking block 91. The mounting groove is formed by recessing into the inner side of the bottom of the air collection section 3, and the filter screen 4 is embedded in the mounting groove. There are multiple locking blocks 91 arranged circumferentially on the outer side of the filter screen 4. One end of each locking block 91 is rotatably connected to the bottom of the air collection section 3, and the other end rotates to abut against the bottom surface of the filter screen 4 or disengages from abutting.

[0022] In this embodiment, since the bottom of the air collection section 3 is circular, the edge of the mounting groove is also circular, and the filter screen 4 is also circular. After the filter screen 4 is fitted into the mounting groove, the bottom surface of the filter screen 4 and the bottom surface of the air collection section 3 are on the same plane. Multiple locking blocks 91 are rotated to make the working ends of the multiple locking blocks 91 abut against the bottom edge of the filter screen 4 to limit the position of the filter screen 4.

[0023] When the filter screen 4 needs to be removed for cleaning, first separate the upper cylinder 1 and the lower cylinder 2 to open the port at the bottom of the upper cylinder 1; then rotate the multiple locking blocks 91 so that their working ends are disengaged from the bottom surface of the filter screen 4. At this time, the filter screen 4 is released from the lock and can be removed from the mounting slot for subsequent cleaning.

[0024] To facilitate the removal of filter screen 4, a handle can be attached to the bottom of filter screen 4. Holding the handle makes it easy to remove filter screen 4 from the mounting slot.

[0025] Each of the locking blocks 91 can be detachably connected to the bottom of the air collection section 3 by means of a rotating shaft.

[0026] In this embodiment, the number of locking blocks 91 is shown as four, but the number can be adjusted reasonably according to the actual situation.

[0027] To increase the difficulty for dust to enter the gas collection section 3, such as Figure 2 and Figure 3 As shown, according to another embodiment of the present invention, the diffusion cyclone separator wherein the bottom of the gas collecting section 3 extends downward and gradually contracts inward to form a contraction port structure 31.

[0028] Specifically, in this embodiment, the contraction structure 31 is a cone-shaped structure integrally formed at the bottom of the gas collecting section 3, which reduces the size of the gas collecting inlet of the gas collecting section 3 and causes some gas to collide with the outer wall of the contraction structure 31 during the rising process, thereby increasing the difficulty for dust to enter the gas collecting section 3 and improving the separation effect of dust and gas.

[0029] Specifically, the detachable connector 9 is installed on the bottom of the contraction structure 31.

[0030] To facilitate the collection of dust discharged from the dust exhaust pipe of the lower cylinder 2, such as Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, in the diffusion cyclone separator, a collection bucket 11 is arranged below the dust discharge pipe of the lower cylinder 2 via an adjustable support frame 10, and the adjustable support frame 10 can be used to adjust the height of the collection bucket 11.

[0031] In this embodiment, the adjustable support frame 10 includes a base plate 101, a support plate 102, and an adjustment handle 103. The base plate 101 is located below the dust exhaust pipe and one side of it is connected to the lower cylinder 2 through a connecting part 104. The support plate 102 is disposed between the base plate 101 and the dust exhaust pipe and is used to place the collection bucket 11. The adjustment handle 103 is connected to the support plate 102 and is also threadedly connected to the base plate 101.

[0032] The connecting part 104 includes a connecting plate fixedly connected to the lower cylinder 2 and two connecting rods connected between the connecting plate and the bottom plate 101, so as to stably connect the bottom plate 101 and the structure is simple; the two connecting rods are located on one side of the bottom plate 101 so that the other side of the bottom plate 101 forms a space for the collection bucket 11 to be moved into or out of the support plate 102.

[0033] The specific process of connecting the collection bucket 11 with the dust exhaust pipe is as follows:

[0034] Place the collection bucket 11 on the support plate 102, then hold the adjustment handle 103 and rotate it to drive the support plate 102 towards the dust discharge pipe, so that the dust discharge port at the bottom of the dust discharge pipe is embedded into the collection bucket 11 to a certain depth. Then stop rotating the adjustment handle 103. At this time, the collection bucket 11 can stably collect the dust discharged from the dust discharge pipe, reducing the risk of dust escaping from the collection bucket 11.

[0035] When enough dust has been collected in collection bin 11 and needs to be emptied:

[0036] By holding the adjustment handle 103 and turning it in the opposite direction, the support plate 102 is driven to move away from the dust discharge pipe until the dust discharge port at the bottom of the dust discharge pipe is moved out of the collection bucket 11. Then, stop turning the adjustment handle 103. At this time, the collection bucket 11 can be removed from the support plate 102 to empty the dust in the collection bucket 11.

[0037] To make the collection bucket 11 more stable on the support plate 102, a limiting dike can be formed at the top edge of the support plate 102.

[0038] When using this diffusion-type cyclone separator:

[0039] First, connect the collection bucket 11 to the dust exhaust pipe;

[0040] Then, the dust-laden gas is introduced through the inlet pipe 6 and enters the upper cylinder 1 for cyclone separation;

[0041] The separated dust is collected in the collection bucket 11 through the dust discharge pipe. The separated gas is separated by the filter screen 4, enters the gas collection section 3, and is then discharged through the exhaust pipe into the electrostatic precipitator 5 after electrostatic dust removal.

[0042] Whether to open the regulating valve 8 depends on the needs.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A diffusion-type cyclone separator, comprising an upper cylinder and a lower cylinder detachably connected thereto, wherein a gas collecting section is provided within the upper cylinder, characterized in that, The gas collection inlet at the bottom of the gas collection section is equipped with a filter screen, and an electrostatic precipitator is connected to the exhaust pipe at the top of the gas collection section.

2. The diffusion-type cyclone separator according to claim 1, characterized in that, The filter screen is detachably connected to the air inlet at the bottom of the air collection section via a detachable connector, the detachable connector comprising: The mounting groove is formed by a recess inward on the inner side of the bottom of the air collection section, and the filter screen is embedded in the mounting groove. The locking blocks are multiple in number and arranged circumferentially on the outside of the filter screen. One end of each locking block is rotatably connected to the bottom of the air collection section, and the other end of each locking block rotates to abut against the bottom surface of the filter screen or disengages from abutting.

3. A diffusion-type cyclone separator according to claim 1, characterized in that, The bottom of the gas collecting section extends downwards and gradually contracts inwards to form a contraction port structure.

4. A diffusion-type cyclone separator according to claim 1, characterized in that, The upper cylinder is connected to an air intake pipe that is tangent to it, and the inner wall of the air intake pipe has an acceleration spiral groove formed along its axial direction.

5. A diffusion-type cyclone separator according to claim 4, characterized in that, A return air pipe is provided between the air inlet pipe and the electrostatic precipitator, and a regulating valve is installed on the return air pipe.

6. A diffusion-type cyclone separator according to claim 1, characterized in that, Below the dust discharge pipe of the lower cylinder, a collection bucket is arranged in conjunction with it via an adjustable support frame. The adjustable support frame can be used to adjust the height of the collection bucket.

7. A diffusion-type cyclone separator according to claim 6, characterized in that, The adjustable support frame includes: A base plate, which is located below the dust discharge pipe and is connected to the lower cylinder on one side by a connecting part; A support plate is disposed between the base plate and the dust discharge pipe and is used to place the collection bucket. An adjustment handle is connected to a support plate and also threadedly connected to a base plate.

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