A dust suppression system for sludge drying and carbonization

Abstract

The present invention discloses a dust reduction system for sludge drying and carbonization, comprising a fan; a circular pipe having a circular pipeline structure, the circular pipe being provided with a first dust reduction pipeline branch line and a second dust reduction pipeline branch line symmetrically distributed about the axis of the inlet and outlet, the first dust reduction pipeline branch line and the second dust reduction pipeline branch line being provided with dust reduction components of the same structural arrangement; the dust reduction component comprising a detachable dust reduction pipe and valves respectively installed at both ends of the dust reduction pipe and connected to the circular pipe; the dust reduction pipe comprising a dust reduction chamber and a filter screen movably connected to the inner wall of the dust reduction chamber and arranged in a staggered manner, and a semi-enclosed passage opening is formed between the dust reduction chamber and the inner wall. The present invention realizes the two-way use of the pipeline system by adopting the structure of the circular pipe, and realizes the sedimentation and adsorption of oily particles and dust particles in combination with the use of the detachable dust reduction pipe, effectively improving the use effect of the dust reduction system.

Description

Technical Field

[0001] The invention relates to the technical field of drying and carbonization, and in particular to a dust reduction system for sludge drying and carbonization. Background Art

[0002] In the technical field of sludge drying and carbonization, the high-temperature pyrolysis gas generated in the drying and carbonization process contains a certain amount of oily particles and dust particles. The prior art has been trying to find a device suitable for filtering the oily particles and dust particles in the sludge drying and carbonization. The piping system in the prior art is generally a whole pipe structure. After long-term use, a large amount of particulate matter settles at the bottom of the pipe, and a part of the oily particles are attached. The staff needs to dismantle the entire pipe for cleaning, which is not only difficult to dismantle, but also difficult to achieve quick cleaning. Summary of the invention

[0003] The object of the present invention is to provide a dust reduction system for sludge drying and carbonization to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a dust reduction system for sludge drying and carbonization, comprising:

[0005] Fan;

[0006] The round-shaped pipe has a round-shaped pipe structure, and has an inlet and an outlet arranged on the same axis at both ends, the inlet is connected to the fan, and the outlet is connected to the pipeline system outside the round-shaped pipe. The round-shaped pipe is provided with a first dust reduction pipeline branch line and a second dust reduction pipeline branch line symmetrically distributed about the axis of the inlet and the outlet, and the first dust reduction pipeline branch line and the second dust reduction pipeline branch line are both provided with dust reduction components of the same structural arrangement;

[0007] The dust reduction assembly includes a detachable dust reduction pipe and valves respectively installed at both ends of the dust reduction pipe and connected to the loop pipe; the dust reduction pipe includes a dust reduction chamber and filter screens movably connected to the inner wall of the dust reduction chamber and arranged in a staggered manner, and multiple filter screens are arranged along the radial line of the dust reduction pipe, and a semi-closed channel opening is formed between the filter screens and the inner wall of the dust reduction chamber.

[0008] The first dust reduction pipeline branch line includes an arc pipe 1 connected to the pipe inlet and an arc pipe 2 connected to the pipe outlet, respectively. A straight pipe parallel to the arrangement axis of the pipe inlet and the pipe outlet is arranged between the arc pipe 1 and the arc pipe 2, and the dust reduction component is installed in the middle of the straight pipe.

[0009] The dust reduction assembly includes a dust reduction pipe, a valve 1 connected to the inlet of the dust reduction pipe, and a valve 2 connected to the outlet of the dust reduction pipe. The valve 1 is connected to the arc pipe 1, and the valve 2 is connected to the arc pipe 2.

[0010] The dust reduction pipe includes a pipe body and a dust reduction chamber formed in the pipe body, wherein a filter screen 1 is detachably connected to a side of the dust reduction chamber near an inlet, and a filter screen 2 is detachably connected to a side of the dust reduction chamber near an outlet, wherein the filter screen 1 and the filter screen 2 divide the inlet of the dust reduction chamber into chamber 1, chamber 2 and chamber 3 from the outlet in sequence, wherein the inlet is connected to chamber 1, and the outlet is connected to chamber 3;

[0011] The edge of the filter screen 1 is partially connected to the inner wall of the dust removal chamber, and a channel opening 1 with a preset distance from the inner wall of the dust removal chamber is formed at the edge of the top, and the channel opening 1 connects the chamber 1 with the chamber 2;

[0012] The edge of the second filter screen is partially connected to the inner wall of the dust removal chamber, and a second channel opening having a preset distance from the inner wall of the dust removal chamber is formed at the edge of the bottom, and the second channel opening connects the second chamber with the third chamber.

[0013] The apertures of the inlet and outlet are the same and are both smaller than the inner diameter of the dust reduction chamber. The upper diameter pipe wall of the inlet is the upper pipe mouth wall, which is located on the same axial horizontal line as the top of the filter screen one. The lower diameter pipe wall of the outlet is the lower pipe mouth wall, which is located on the same axial horizontal line as the bottom of the filter screen two.

[0014] The connection between the inner wall of the inlet and the inner wall of the dust removal chamber forms an arc-shaped portion 1 bulging toward the inner side of the chamber, and the connection between the inner wall of the outlet and the inner wall of the dust removal chamber forms an arc-shaped portion 2 bulging toward the inner side of the chamber.

[0015] The second filter screen is detachably connected to the middle position of the dust removal chamber, and the first filter screen is detachably connected to the side close to the inlet.

[0016] The space ratio of chamber one, chamber two and chamber three in the dust reduction chamber is 1:2:3.

[0017] The filter screen 1 is a 10-mesh metal filter screen, and the filter screen 2 is a 30-mesh metal filter screen.

[0018] The vertical heights of the channel opening 1 and the channel opening 2 are both one-fourth of the inner diameter length of the dust removal chamber.

[0019] It can be seen from the above technical solution that the present invention realizes the two-way use of the pipeline system by adopting the structure of the ring-shaped pipe, and combines the use of the detachable dust reduction pipe to realize the sedimentation and adsorption of oily particles and dust particles, thereby effectively improving the use effect of the dust reduction system and preventing the blockage of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the dust suppression pipe structure of the present invention;

[0022] Figure 3 The front cross-sectional view of the dust suppression pipe of the present invention is a circular pipe Figure 1 ;

[0023] Figure 4 The front cross-sectional view of the dust suppression pipe of the present invention is a circular pipe Figure 2 ;

[0024] Figure 5 The front cross-sectional view of the dust suppression pipe of the present invention is a square pipe Figure 1 ;

[0025] Figure 6 The front cross-sectional view of the dust suppression pipe of the present invention is a square pipe Figure 2 .

[0026] In the figure: 1 fan, 2 loop pipe, 21 pipe inlet, 22 pipeline 1, 221 arc pipe 1, 222 straight pipe, 223 arc pipe 2, 23 pipeline 2, 24 pipe outlet, 3 dust suppression pipe, 31 flange 1, 32 flange 2, 33 inlet part, 331 upper pipe outlet wall, 34 outlet part, 341 lower pipe outlet wall, 35 pipe body, 36 chamber 1, 361 arc part 1, 362 channel outlet 1, 37 chamber 2, 371 channel outlet 2, 38 chamber 3, 381 arc part 2, 4 filter screen 1, 41 end 1, 5 filter screen 2, 51 end 2, 61 valve 1, 62 valve 2. DETAILED DESCRIPTION

[0027] In order to further understand the purpose, structure, characteristics and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0028] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a dust reduction system for sludge drying and carbonization according to an embodiment of the present invention, Figure 2 for Figure 1Schematic diagram of the structure of the dust reduction component. The dust reduction system for sludge drying and carbonization according to one embodiment of the present invention comprises a fan 1; a round pipe 2, which has a round pipe structure, and is respectively formed with an inlet 21 and an outlet 24 arranged on the same axis at both ends, the inlet 21 is connected to the fan 1, and the outlet 24 is connected to the pipeline system outside the round pipe 2, and the round pipe 2 is provided with a first dust reduction pipeline branch line and a second dust reduction pipeline branch line symmetrically distributed about the axis of the inlet 21 and the outlet 24, and the first dust reduction pipeline branch line and the second dust reduction pipeline branch line are both provided with dust reduction components with the same structural arrangement; the dust reduction component includes a dust reduction pipe and valves respectively installed at both ends of the dust reduction pipe and connected to the round pipe 2; the dust reduction pipe includes a dust reduction chamber and filter screens movably connected to the inner wall of the dust reduction chamber and arranged in a staggered manner, and a plurality of the filter screens are arranged along the radial line of the dust reduction pipe, and a semi-enclosed channel opening is formed between the filter screens and the inner wall of the dust reduction chamber.

[0029] In this embodiment, the loop pipe 2 is configured to have two symmetrical and identically structured first dust reduction pipeline branches and second dust reduction pipeline branches, and the pipeline inspection and maintenance is achieved through valves installed on each dust reduction pipeline branch, and includes the following specific implementation process;

[0030] 1: When the loop pipe 2 is in a normal pipeline dust reduction state, the valves on the first dust reduction pipeline branch line and the second dust reduction pipeline branch line are both in an open state. Here, those skilled in the art can understand that the loop pipe 2 is in a fully open state, and the valve 1 61 at the front end of the dust reduction pipe 3 and the valve 2 62 at the rear end are both in an open state. In practice, both the valve 1 61 and the valve 2 62 used can be butterfly valves; at this time, the high-temperature airflow in the pipeline flows along the pipe-shaped direction of the loop switch 2, flows into the pipe inlet 21 through the fan 1, and is divided into the first dust reduction pipeline branch line and the second dust reduction pipeline branch line. When flowing through the first dust reduction pipeline branch line and the second dust reduction pipeline branch line, the oily particles and fine dust mixed in the high-temperature airflow are filtered through the dust reduction pipe 3. Finally, the filtered high-temperature airflow enters the external pipeline system of the loop pipe 2 through the pipe outlet 24;

[0031] Second: When the loop pipe 2 needs to unload and clean one of the dust reduction components on the first dust reduction pipeline branch line and the second dust reduction pipeline branch line, the pipeline branch lines on the loop pipe 2 can be operated in an alternating manner. Specifically, for example, when the dust reduction components on the first dust reduction pipeline branch line need to be disassembled and cleaned, the dust reduction components on the second dust reduction pipeline branch line are in a working state, that is, the two valves on the second dust reduction pipeline branch line are in an open state. At the same time, the valves on the first dust reduction pipeline branch line are in a closed state, and valve one 61 and valve two 62 are both in a closed state. At this time, the dust reduction pipe 3 can be disassembled. Similarly, when the dust reduction components on the second dust reduction pipeline branch line need to be disassembled and cleaned, the dust reduction components on the first dust reduction pipeline branch line are in a working state, that is, the two valves on the first dust reduction pipeline branch line are in an open state, and the two valves on the second dust reduction pipeline branch line are in a closed state.

[0032] In this embodiment, the dust reduction pipe 3 is a detachable part, and the two ends of the dust reduction pipe 3 are respectively fixed to the loop pipe 2 by flange 1 31 and flange 2 32. The dust reduction pipe 3 implements dust reduction for oily particles and dust particles in the high-temperature airflow through the internal chamber structure and the filter screen for oil removal and dust removal. Specifically, the dust reduction pipe 3 includes a tube body 35 and a dust reduction chamber formed in the tube body 35. The dust reduction chamber is detachably connected with a filter screen 1 4 on the side close to the inlet 33, and is detachably connected with a filter screen 2 5 on the side close to the outlet 34. The filter screen 1 4 and the filter screen 2 5 separate the inlet 33 of the dust reduction chamber from the outlet The mouth 34 is divided into chamber one 36, chamber two 37 and chamber three 38 in sequence, the inlet portion 33 is connected to chamber one 36, and the outlet portion 34 is connected to chamber three 38; the edge of the filter screen 4 is partially connected to the inner wall of the dust reduction chamber, and a channel opening 362 with a preset distance from the inner wall of the dust reduction chamber is formed at the top edge, and the channel opening 362 connects chamber one 36 with chamber two 37; the edge of the filter screen 2 5 is partially connected to the inner wall of the dust reduction chamber, and a channel opening 2 371 with a preset distance from the inner wall of the dust reduction chamber is formed at the bottom edge, and the channel opening 2 371 connects chamber two 37 with chamber three 38.

[0033] From the above, those skilled in the art can understand that the dust reduction system for sludge drying and carbonization implements dust reduction through the internally arranged chamber structure and filter screen 1 4 and filter screen 2 5. The dust reduction principle is to form a positive impact along the length direction of the pipeline during the rapid flow of the airflow, and to preliminarily filter the oily particles and dust particles in the high-temperature airflow that first contacts the filter screen 4. This filtering process is mainly used for filtering oily particles. Then, an airflow channel with a tortuous path is formed by channel opening 1 362 and channel opening 2 371. Due to the formation of the tortuous path, a small amount of high-temperature airflow that has not been filtered by filter screen 1 4 and most of the high-temperature airflow that has been filtered by filter screen 1 4 can be effectively further filtered. At this time, the high-temperature airflow is filtered by filter screen 2 5 and is finally discharged through the outlet 34. It is important to explain that the arrangement of the channel opening 1 362 and the channel opening 2 371 and the relationship between their positions are formed. In practice, the airflow that first flows through the chamber 1 36 and passes through the filter 1 4 occupies most of the airflow, but the channel opening 1 362 left directly above can still flow out a small amount of unfiltered high-temperature airflow. Due to the blocking effect of the filter 1 4, the airflow velocity flowing through the filter 1 4 drops sharply, which results in three flow direction relationships between the oily particles and dust particles in the high-temperature airflow:

[0034] 1. The dust particles in the chamber 1 36 will settle due to the airflow with a rapidly decreasing flow rate and gather at the bottom of the chamber 1 36;

[0035] Second: Most of the high-temperature airflow is filtered through the filter screen 14, most of the oily particles are attached to the filter screen 14, and some dust particles are attached to the filter screen 14;

[0036] 3: A small amount of high temperature airflow enters into chamber 2 through channel 1 362 .

[0037] In addition, it is necessary to focus on the positional relationship between the channel opening 1 362 and the channel opening 2 371, so as to further explain the filtering effect of the high-temperature airflow flowing through the filter screen 2 5. In this embodiment, the channel opening 1 362 and the channel opening 2 371 form an airflow channel with a curved path. At the same time, the channel opening 1 362 is located at the top, and the channel opening 2 371 is located at the bottom, which makes it possible for a small portion of the unfiltered high-temperature airflow passing through the channel opening 1 362 to be filtered through the filter screen 2 5, and most of the dust particles filtered by the filter screen 2 5 are dust particles. At the same time, since the channel opening 1 362 intersects with the dust removal pipe 3 with a smaller inner diameter, the high-temperature airflow has the effect of accelerating the airflow when flowing through the channel opening 1 362. When the high-temperature airflow passing through the channel opening 1 362 enters the chamber 2 37, and the high-temperature airflow flowing out to the chamber 2 37 through the filter screen 1 4, the airflow velocity flowing through the filter screen 2 5 drops sharply due to the blocking effect of the filter screen 2 5, which makes the oily particles and dust particles in the high-temperature airflow have three flow direction relationships:

[0038] 1. The dust particles in the second chamber 37 will settle due to the airflow with a rapidly decreasing flow rate and gather at the bottom of the second chamber 37;

[0039] 2. Most of the high-temperature airflow is filtered through the filter 2 5, most of the dust particles are filtered through the filter 2 5, and a small part of the oily particles are attached to the filter 2 5;

[0040] 3: The filtered high-temperature airflow passes through chamber 2 37 and filter 2 5 and enters chamber 3 38 .

[0041] After entering the chamber three 38 , a small amount of dust particles that have not been filtered can still settle to the bottom of the chamber three 38 under the action of gravity.

[0042] In order to further improve the utilization efficiency of the dust reduction system for sludge drying and carbonization, in this embodiment, the first dust reduction pipeline branch line includes an arc pipe 1 221 connected to the pipe inlet 21 and an arc pipe 2 223 connected to the pipe outlet 24, and a straight pipe 222 parallel to the arrangement axis of the pipe inlet 21 and the pipe outlet 24 is arranged between the arc pipe 1 221 and the arc pipe 2 223. The dust reduction component is installed in the middle of the straight pipe 222. The structural setting of this arc pipe can effectively improve the fluidity of the high-temperature airflow in the pipeline, and effectively prevent the problem of particle blockage in the high-temperature airflow.

[0043] Furthermore, the apertures of the inlet portion 33 and the outlet portion 34 are the same and are both smaller than the inner diameter of the dust reduction chamber. This structure allows the high-temperature airflow to have a sudden drop in velocity after flowing into the dust reduction chamber, effectively achieving the sedimentation of oily particles and dust particles under the action of gravity; the upper diameter tube wall of the inlet portion 33 is an upper tube mouth wall 331, and the upper tube mouth wall 331 and the top of the filter screen 4 are located on the same axial horizontal line, that is, the upper tube mouth wall 331 is flush with the end 41. This structural setting can effectively achieve that the high-temperature airflow can directly enter the chamber 36 after entering. It impacts the filter screen 4, and at the same time, a certain size of the channel opening 362 can be reserved to accelerate the high-temperature airflow; the lower diameter tube wall of the outlet portion 34 is the lower tube opening wall 341, and the lower tube opening wall 341 and the bottom of the filter screen 5 are located on the same axial horizontal line, that is, the lower tube opening wall 341 is flush with the end 2 51. This structural setting corresponds to the position setting of the upper tube opening wall 331 and the end 41, so that the high-temperature airflow has an effective filtering area when impacting the filter screen 5, and at the same time, a certain size of the channel opening 371 can be reserved to accelerate the high-temperature airflow.

[0044] Furthermore, at the connection between the inner wall of the aperture of the inlet portion 33 and the inner wall of the dust reduction chamber, there is formed an arc-shaped portion 361 protruding toward the inner side of the chamber. The arc-shaped portion 361 is formed around the edge of the inlet portion 33, which ensures the stability of the airflow to a certain extent. On the other hand, the dust reduction chamber is formed with a cavity structure larger than the aperture size of the inlet portion 22, thereby realizing the sedimentation effect. At the connection between the inner wall of the aperture of the outlet portion 34 and the inner wall of the dust reduction chamber, there is formed an arc-shaped portion 381 protruding toward the inner side of the chamber. Similarly to the arc-shaped portion 361, the arc-shaped portion 381 is formed around the edge of the outlet portion 34, which ensures first-class stability to a certain extent.

[0045] Furthermore, the filter screen 2 5 is detachably connected to the middle position of the dust removal chamber, and the filter screen 1 4 is detachably connected to the side close to the inlet. This layout ensures that chamber 1 36, chamber 2 37 and chamber 3 38 have different space sizes, and combined with the sedimentation effect, the sedimentation effect is effectively improved. On this basis, the space ratio of chamber 1 36, chamber 2 37 and chamber 3 38 in the dust removal chamber is 1:2:3.

[0046] Furthermore, the filter screen 1 4 is a 10-mesh metal filter screen, and the filter screen 2 5 is a 30-mesh metal filter screen.

[0047] Furthermore, the vertical heights of the channel opening 1 362 and the channel opening 2 371 are both one-fourth of the inner diameter of the dust reduction chamber.

[0048] In practice, Figure 3 and Figure 4As shown, the dust removal pipe 3 can adopt a circular pipe structure, and the filter screen 1 4 and the filter screen 2 5 installed inside it are fan-shaped structures adapted to the inner diameter of the dust removal chamber.

[0049] In practice, Figure 4 and Figure 5 As shown, the dust removal pipe 3 may adopt a square pipe structure, and the filter screen 1 4 and the filter screen 2 5 installed inside the dust removal pipe 3 are square structures adapted to the inner contour of the dust removal chamber.

[0050] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A dust reduction system for sludge drying and carbonization, characterized by: Include: Fan; The round-shaped pipe has a round-shaped pipe structure, and has an inlet and an outlet arranged on the same axis at both ends, the inlet is connected to the fan, and the outlet is connected to the pipeline system outside the round-shaped pipe. The round-shaped pipe is provided with a first dust reduction pipeline branch line and a second dust reduction pipeline branch line symmetrically distributed about the axis of the inlet and the outlet, and the first dust reduction pipeline branch line and the second dust reduction pipeline branch line are both provided with dust reduction components of the same structural arrangement; The dust reduction assembly includes a detachable dust reduction pipe and valves respectively installed at both ends of the dust reduction pipe and connected to the loop pipe; the dust reduction pipe includes a dust reduction chamber and filter screens movably connected to the inner wall of the dust reduction chamber and arranged in a staggered manner, and a plurality of the filter screens are arranged along the radial line of the dust reduction pipe, and a semi-enclosed passage opening is formed between the filter screens and the inner wall of the dust reduction chamber; The dust reduction pipe includes a pipe body and a dust reduction chamber formed in the pipe body, a filter screen 1 is detachably connected to a side of the dust reduction chamber near the inlet, and a filter screen 2 is detachably connected to a side of the dust reduction chamber near the outlet, the inlet is connected to chamber 1, and the outlet is connected to chamber 3, the filter screen 1 and the filter screen 2 divide the inlet of the dust reduction chamber into chamber 1, chamber 2 and chamber 3 from the outlet, and the space ratio of chamber 1, chamber 2 and chamber 3 in the dust reduction chamber is 1:2:3; The apertures of the inlet and outlet are the same and are both smaller than the inner diameter of the dust reduction chamber. The upper diameter pipe wall of the inlet is the upper pipe mouth wall, which is located on the same axial horizontal line as the top of the filter screen one. The lower diameter pipe wall of the outlet is the lower pipe mouth wall, which is located on the same axial horizontal line as the bottom of the filter screen two.

2. A dust reduction system for sludge drying and carbonization according to claim 1, characterized in that: The first dust reduction pipeline branch line includes an arc pipe 1 connected to the pipe inlet and an arc pipe 2 connected to the pipe outlet, respectively. A straight pipe parallel to the arrangement axis of the pipe inlet and the pipe outlet is arranged between the arc pipe 1 and the arc pipe 2, and the dust reduction component is installed in the middle of the straight pipe.

3. A dust reduction system for sludge drying and carbonization according to claim 2, characterized in that: The dust reduction assembly includes a dust reduction pipe, a valve 1 connected to the inlet of the dust reduction pipe, and a valve 2 connected to the outlet of the dust reduction pipe. The valve 1 is connected to the arc pipe 1, and the valve 2 is connected to the arc pipe 2.

4. A dust reduction system for sludge drying and carbonization according to claim 1, characterized in that: The edge of the filter screen 1 is partially connected to the inner wall of the dust removal chamber, and a channel opening 1 with a preset distance from the inner wall of the dust removal chamber is formed at the edge of the top, and the channel opening 1 connects the chamber 1 with the chamber 2; The edge of the second filter screen is partially connected to the inner wall of the dust removal chamber, and a second channel opening having a preset distance from the inner wall of the dust removal chamber is formed at the edge of the bottom, and the second channel opening connects the second chamber with the third chamber.

5. The dust reduction system for sludge drying and carbonization according to claim 1, characterized in that: The connection between the inner wall of the inlet and the inner wall of the dust removal chamber forms an arc-shaped portion 1 bulging toward the inner side of the chamber, and the connection between the inner wall of the outlet and the inner wall of the dust removal chamber forms an arc-shaped portion 2 bulging toward the inner side of the chamber.

6. A dust reduction system for sludge drying and carbonization according to claim 4, characterized in that: The second filter screen is detachably connected to the middle position of the dust removal chamber, and the first filter screen is detachably connected to the side close to the inlet.

7. A dust reduction system for sludge drying and carbonization according to claim 4, characterized in that: The filter screen 1 adopts a 10-mesh metal filter screen, and the filter screen 2 adopts a 30-mesh metal filter screen.

8. The dust reduction system for sludge drying and carbonization according to claim 4, characterized in that: The vertical heights of the channel opening 1 and the channel opening 2 are both one-fourth of the inner diameter of the dust reduction chamber.

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