Efficient spiral spraying wet dust collector
By adopting a spiral spray structure and water inlet design in the wet scrubber, the problem of low fine particle separation rate is solved, achieving efficient particle separation and water conservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUAN COUNTY TAIPINGYANG MASCH FACTORY
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-15
AI Technical Summary
Existing wet scrubbers have problems with low fine particle capture rate and difficulty in combining hydrophobic particles with water mist during shot blasting. In particular, fine particles and fine water mist tend to flow to the side wall of the cylinder, resulting in low separation efficiency.
The wet dust collector adopts a spiral spray structure, including a spiral air inlet pipe and multiple sets of water supply holes. The spiral section is set horizontally or at a small angle. Combined with multiple sets of water supply pipes to continuously inject water, it enhances the water mist content and uniformity, and improves the particle separation rate by utilizing centrifugal force and extending the airflow path.
It significantly improves the separation rate of fine and coarse particles, reduces the height of the dust collector, reduces water consumption, and improves dust removal efficiency and stability.
Smart Images
Figure CN224236438U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of separation technology and relates to a wet dust collector, particularly a high-efficiency spiral spray wet dust collector. Background Technology
[0002] Shot blasting is a common surface treatment process, mainly used to clean, strengthen, or pre-treat workpiece surfaces. Shot blasting includes not only coarse particles (>10μm) such as shot fragments and larger impurities, but also fine particles (<10μm, or even submicron) formed by metal oxidation or coating decomposition.
[0003] To address the dust generated during shot blasting, various specialized dust collectors have been proposed, such as the wet dust collector for shot blasting machines described in Chinese patent literature (application number 201520615959.6), and the wet spray dust collector proposed by the inventor (application number 201810751019.8). Existing wet dust collectors suffer from a problem with fine particle capture efficiency. This is because: 1. Fine particles entering the cylinder from the inlet duct, fine water mist (<10μm), and the fine water mist formed by the water mist spraying components are relatively light, and most of them flow directly to the channel between the lower inclined plate and the cylinder sidewall; 2. Fine particles with high hydrophobicity, such as stainless steel and paint, do not readily bind with water mist. Summary of the Invention
[0004] This invention proposes a high-efficiency spiral spray wet dust collector. The technical problem to be solved by this invention is how to improve the separation rate of fine particles in the wet dust collector while ensuring the separation rate of coarse particles.
[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution: A high-efficiency spiral spray wet dust collector includes a cylinder and an inlet pipe. The cylinder is vertically arranged, and a fan connected to the top of the inner cavity is installed on the top wall of the cylinder. Multiple inclined and staggered separation plates are arranged in the upper part of the inner cavity of the cylinder. The separation plates and the side wall of the cylinder form a meandering channel. A drain port is opened on the bottom wall of the cylinder. An installation port is opened on the lower side wall of the inner cavity of the cylinder. The inlet pipe includes a spiral section, an inlet section connected to the outer end of the spiral section, and an outlet section connected to the inner end of the spiral section. The inlet pipe is embedded in the installation port, and the side wall of the cylinder is connected to the inlet pipe. The sidewalls of the duct are sealed and fixedly connected. The inner end area of the inlet duct is located in the inner cavity of the inlet duct, and the outer end area of the inlet duct is located outside the sidewall of the inlet duct. The outlet section positions the inner port of the inlet duct directly below the bottom separation plate, and the inner port of the inlet duct is positioned opposite to the airflow direction of the bend area between the bottom separation plate and the sidewall of the cylinder in the meandering channel. The wet dust collector also includes a water spray assembly and multiple sets of water supply pipes. The water spray assembly is located in the inlet section. Multiple water supply holes are opened on the sidewall of the spiral section. The multiple water supply holes are arranged along the extension direction of the sidewall of the spiral section. The multiple sets of water supply pipes are connected to the multiple water supply holes one by one.
[0006] The cylinder serves as the main structure of the dust collector, supporting other components. When the wet scrubber is in use, the drain outlet is inserted into the water tank, forming a sealed space within the cylinder. When the fan is running, air containing dust particles enters from the outer port of the inlet pipe, flows spirally through the inlet pipe, and then enters the cylinder from the inner port. The water mist and dust are then separated through a meandering channel, and finally, the clean air is discharged by the fan.
[0007] The spiral segment, arranged horizontally or at a slight angle, gradually increases in radius from the inside to the outside. This spiral segment not only reduces the required height of the wet scrubber but also improves the separation rate of dust particles and facilitates water discharge from the inlet duct. Specifically, the spiral segment guides the airflow in a spiral manner, using centrifugal force to throw dust particles towards the outer wall, achieving particle separation in the airflow, especially for coarse particles. Multiple sets of water supply pipes continuously inject water into the inner cavity of the inlet duct, forming a water film on the duct wall, mixing the centrifugally separated particles with the water. The high-speed airflow also causes the water injected into the inlet duct to form water mist of varying coarseness, increasing the water mist content and uniformity within the inlet duct. In particular, the spiral segment is filled with water mist from the outer end to the inner end, increasing the possibility of water mist combining with fine particles and thus improving the separation rate of fine particles.
[0008] The orientation and position of the inner port of the air inlet not only extend the airflow path, but also, because the cross-sectional area of the cylinder is much larger than that of the air inlet, the airflow velocity drops significantly when the airflow first enters the inner cavity of the cylinder, increasing the possibility of water mist combining with fine particles and thus improving the separation rate of fine particles.
[0009] The separator separates the condensed water from the large water droplets sprayed from the air inlet pipe, which are then discharged through the drain outlet under the action of gravity.
[0010] Compared with existing technologies, the inlet pipe of this wet scrubber not only includes a spiral section, but also sets the spiral section horizontally or at a small angle, breaking through the traditional vertical spiral setting or tangential setting relative to the cylindrical body; by extending the flow length of dust and water mist and by continuously replenishing water, the water mist content in the inlet pipe is increased, thereby improving dust removal efficiency while reducing water consumption and lowering the height of the wet scrubber.
[0011] In the aforementioned wet dust collector, the spiral section gradually decreases in size from the outer end to the inner end.
[0012] In the aforementioned wet dust collector, the inlet pipe has a rectangular cross-section and its sidewalls are vertically arranged; the outer sidewalls of the inlet section and the outlet section are both tangent to the outer sidewall of the spiral section.
[0013] In the aforementioned wet dust collector, the water inlet is located on the outer or inner wall of the spiral section, and the water inlet is strip-shaped and vertically arranged.
[0014] In the aforementioned wet dust collector, the water supply pipe includes a strip-shaped square tube section and a round tube section for connecting to a water supply pipe. The square tube section is vertically arranged and is fixedly connected to the outer wall of the air inlet pipe, the inner wall of the air inlet pipe, or the side wall of the cylinder. One side wall of the square tube section has a strip-shaped opening, which is connected to the water supply hole.
[0015] In the aforementioned wet dust collector, the outer wall of the spiral section has an arcuate region that matches the inner surface of the cylindrical body, and the arcuate region of the outer wall of the spiral section is in contact with the inner surface of the cylinder.
[0016] In the aforementioned wet dust collector, the outlet section is a straight pipe, and the centerline of the outlet section is perpendicular to the bottom edge of the lowest separation plate. The bend area between the lowest separation plate and the side wall of the cylinder in the meandering channel is located in one side of the inner cavity of the cylinder, and the inner port of the air inlet pipe faces the side wall of the other side of the inner cavity of the cylinder.
[0017] In the aforementioned wet dust collector, the outlet section is a bend, and the inner port of the inlet pipe is set downwards.
[0018] In the aforementioned wet dust collector, an adjustment plate is provided in the inner end area of the air inlet pipe. The adjustment plate has multiple small holes arranged in an orderly manner. The adjustment plate is rotatably connected to the pipe wall of the air inlet pipe through a rotating shaft (15). A locking component for locking the adjustment plate to prevent rotation is also installed on the pipe wall of the air inlet pipe.
[0019] In the aforementioned wet dust collector, a baffle plate for changing the airflow direction is provided inside the spiral section. A channel is left between one edge of the baffle plate and one side wall of the spiral section, and the other three edges of the baffle plate are fixedly connected to the other three side walls of the spiral section one by one. Multiple orderly arranged air passage holes are opened on the baffle plate. The number of baffle plates is one or more, and multiple baffle plates are arranged along the extension direction of the side wall of the spiral section.
[0020] In the aforementioned wet dust collector, a water inlet is provided on the side wall of the spiral section opposite to the baffle plate. Attached Figure Description
[0021] Figure 1 and Figure 2 This is a three-dimensional structural diagram of a wet dust collector from different perspectives.
[0022] Figure 3 This is a schematic diagram of the main structure of a wet dust collector.
[0023] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of AA.
[0024] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of BB.
[0025] Figure 6 This is an exploded structural diagram of a wet dust collector.
[0026] Figure 7 This is a three-dimensional structural diagram of the air inlet pipe in Embodiment 2.
[0027] Figure 8 This is a cross-sectional structural diagram of AA in Example 3.
[0028] In the diagram, 1. Cylinder; 1a. Mounting port; 2. Air inlet pipe; 2a. Inlet section; 2b. Spiral section; 2c. Outlet section; 3. Water tank; 4. Fan; 5. Support foot; 6. Separation plate; 7. Detour channel; 8. Drain outlet; 9. Drain pipe; 10. Water spray assembly; 11. Water supply pipe; 11a. Square tube section; 11b. Round tube section; 12. Water supply hole; 13. Connecting hole; 14. Adjusting plate; 15. Rotating shaft; 16. Water pump; 17. Baffle plate. Detailed Implementation
[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0034] Example 1: As Figures 1 to 6 As shown, a wet dust collector with a horizontal spiral section inlet duct includes a cylinder 1, an inlet duct 2, a water tank 3, and a fan 4.
[0035] The water tank 3 is placed on the ground, and the cylinder 1 is vertically positioned above the water tank 3. The cylinder 1 is fixedly connected to the water tank 3 by multiple support legs 5. The attached diagram in the instruction manual shows the cylinder 1 as cylindrical, but depending on the actual situation, the cylinder 1 can also be rectangular.
[0036] The blower 4 is installed on the top wall of the cylinder 1, and the blower 4 is connected to the top of the inner cavity of the cylinder 1. When the blower 4 is running, it draws out the gas from the inner cavity of the cylinder 1 to create a negative pressure. Multiple inclined and staggered separation plates 6 are provided in the upper part of the inner cavity of the cylinder 1, forming a meandering channel 7 in the upper part of the inner cavity of the cylinder 1. The attached drawings in the instruction manual show that there are 3 separation plates 6. The number of separation plates 6 can be increased or decreased according to the actual situation, such as 2 or 4.
[0037] The bottom wall of the cylinder 1 is conical and has a drain port 8 at the center. The drain port 8 is connected to the drain pipe 9 inserted into the water tank 3. When the water tank 3 is filled with water and the inner cavity of the cylinder 1 is under negative pressure, the above structure can prevent air from entering the inner cavity of the cylinder 1 through the drain port 8.
[0038] The air inlet duct 2 has a rectangular cross-section, and its sidewalls are vertically arranged. From the outside to the inside, the air inlet duct 2 consists of an inlet section 2a, a spiral section 2b, and an outlet section 2c. The spiral section 2b is horizontally arranged and spiral-shaped; it gradually narrows from its outer end to its inner end. The spiral section 2b not only causes the airflow to flow in a spiral, increasing the centrifugal force of dust particles, but also increases the possibility of dust and water mist combining by narrowing the airflow channel. The outer walls of both the inlet section 2a and the outlet section 2c are tangent to the outer wall of the spiral section 2b. This structure improves the smoothness of the outer wall of the air inlet duct 2, thereby enhancing the stability and smoothness of the airflow.
[0039] Depending on the actual situation, the spiral section 2b can also be replaced by a small-angle tilt setting instead of the above-mentioned horizontal setting. The tilt angle is less than 5°, and the inner end of the spiral section 2b is slightly lower than the outer end of the spiral section 2b. This is conducive to water discharge, especially after the machine stops, the water in the air inlet pipe 2 can be discharged naturally under the action of gravity, which significantly extends the service life of the air inlet pipe 2.
[0040] An installation port 1a is provided on the lower side wall of the inner cavity of the cylinder 1. The air inlet pipe 2 is embedded in the installation port 1a, and the side wall of the cylinder 1 is sealed and fixedly connected to the side wall of the air inlet pipe 2. Both the air inlet pipe 2 and the cylinder 1 are made of metal materials and are fixedly connected by welding. The outer side wall of the spiral section 2b has an arc-shaped area that matches the inner side of the cylindrical cylinder 1. The arc-shaped area of the outer side wall of the spiral section 2b fits against the inner side of the cylinder 1 to form a positioning structure, which improves the ease of installation of the air inlet pipe 2 and the connection stability between the air inlet pipe 2 and the cylinder 1. The inner end area of the spiral section 2b and the outlet section 2c of the air inlet pipe 2 are located in the inner cavity of the air inlet pipe 2, while the outer end area of the spiral section 2b and the inlet section 2a are located on the outer side wall of the air inlet pipe 2.
[0041] The outlet section 2c is a straight pipe, and its centerline is perpendicular to the bottom edge of the lowest separation plate 6. Figure 5 As shown, the inner port of the inlet pipe 2 faces to the right. During operation of the wet dust collector, the airflow direction in the bend section between the lowermost separation plate 6 and the side wall of the cylinder 1 in the detour channel 7 is from right to left and from bottom to top. The arrows in the figure indicate the airflow direction. Therefore, the orientation of the inner port of the inlet pipe 2 is opposite to the airflow direction in the bend section between the lowermost separation plate 6 and the side wall of the cylinder 1 in the detour channel 7. In other words, the bend section between the lowermost separation plate 6 and the side wall of the cylinder 1 in the detour channel 7 is located on the left side of the cylinder 1. Then, the outlet section 2c makes the inner port of the inlet pipe 2 face to the right and the inner port of the inlet pipe 2 is located on the right side of the aforementioned bend section.
[0042] A water spray assembly 10 is installed inside the inlet section 2a. The attached diagram in the instruction manual shows that the inlet section 2a is a right-angle bend, with the outer end of the air inlet pipe 2 facing upwards. A set of water spray assemblies 10 is installed in both the vertical and straight sections of the inlet section 2a. The water spray assembly 10 includes a water spray pipe, and strip-shaped spray nozzles are opened on the side wall of the water spray pipe. Depending on the actual situation, the inlet section 2a can also be a horizontally installed straight pipe, or a set of water spray assemblies 10 can be installed inside the inlet section 2a. The water spray assembly 10 includes a water supply pipe and multiple nozzles installed on the water supply pipe.
[0043] The wet scrubber also includes multiple sets of water supply pipes 11. Multiple water supply holes 12 are provided on the sidewall of the spiral section 2b, arranged along the extension direction of the sidewall of the spiral section 2b. The multiple sets of water supply pipes 11 are connected to the multiple water supply holes 12 in a one-to-one correspondence. The accompanying drawings show that the water supply holes 12 are located on the outer sidewall of the spiral section 2b, are strip-shaped and vertically arranged; there are eight water supply holes 12, and they are evenly spaced. The number of water supply holes 12 can be increased or decreased according to actual conditions, or the spacing between adjacent water supply holes 12 can be reduced from the outer end to the inner section of the spiral section 2b. The water supply pipe 11 includes a strip-shaped square tube section 11a with an opening on one sidewall and a round tube section 11b connected to a water supply pipe. The opening of the square tube section 11a is connected to the water supply holes 12. Water supply holes 12 are also provided on the arc-shaped area of the outer wall of the spiral section 2b. Water supply pipes 11 corresponding to the water supply holes 12 on the arc-shaped area are fixed on the cylinder 1. A connecting hole 13 matching the water supply hole 12 is provided on the cylinder 1. The remaining square tube section 11a is fixed on the outer wall of the spiral section 2b.
[0044] An adjusting plate 14 is installed in the inner end area of the air inlet duct 2. The adjusting plate 14 has multiple orderly arranged small holes. The adjusting plate 14 is rotatably connected to the wall of the air inlet duct 2 via a rotating shaft 15. A locking device is also installed on the wall of the air inlet duct 2 to prevent the adjusting plate 14 from rotating. When the adjusting plate 14 is in a rotatable state, rotating it adjusts the overlap between the adjusting plate 14 and the cross-section of the air inlet duct 2, thereby adjusting the pressure difference between the air inlet duct 2 and the cylinder 1. The adjusting plate 14 also disperses the airflow and causes water to form a mist, improving the water mist content and uniformity in the airflow.
[0045] The outlet section 2c includes a fixed part integrated with the spiral section 2b and a tail section detachably connected to the fixed part. An adjusting plate 14 is installed on the tail section, thereby further improving the water mist content and uniformity inside the cylinder 1. The tail section can be removed for easy cleaning and maintenance of the adjusting plate 14, as well as for replacement of the tail section according to actual working conditions. The above adjustment operation is usually performed according to different fine dust contents; the higher the fine dust content, the higher the overlap between the two.
[0046] The outer port of the air inlet pipe 2 is connected to the shot blasting equipment through a pipe. By describing the operation process of the wet dust collector, the function and advantages of each component are further explained. Water is stored in the water tank 3, and a filter screen is installed in the water tank 3. A water pump 16 is installed on the water tank 3. All water supply pipes 11 and water spray components 10 are connected to the water pump 16 through pipes. The operation of the water pump 16 causes water to be continuously sprayed out of the water spray components 10 and the water supply holes 12.
[0047] The operation of the blower 4 creates a negative pressure inside the cylinder 1, which causes the gas containing dust in the shot blasting equipment to enter the air inlet pipe 2 through the pipeline, and then enter the cylinder 1 after being guided by the air inlet pipe 2. Then, the water mist and dust are separated through the detour channel 7, and finally the clean air is discharged by the blower 4.
[0048] The water spray assembly 10 mixes a large number of water droplets and mists with the dust in the airflow, meaning that the water droplets and mists are pre-mixed with the dust in the inlet section 2a. The spiral section 2b guides the airflow in a spiral manner, thereby generating centrifugal force for both water and dust, which can usually efficiently separate coarse particles in the dust; since water also has a higher specific gravity than air, most of the water droplets and mists are also thrown towards the outer wall. Multiple sets of water supply pipes 11 continuously inject water into the inner cavity of the air inlet duct 2, and the airflow causes the water to reform into mist, thereby significantly increasing the water mist content and uniformity in the airflow from the outer end to the inner end of the spiral section 2b, and increasing the possibility of water mist combining with fine particles; if fine particles combine with water mist, the fine particles are usually captured and do not return to the airflow.
[0049] Because the airflow velocity inside cylinder 1 is low, the water mist concentration is high, and the travel distance is long, the water mist inside cylinder 1 can still efficiently capture fine particles, thereby improving dust removal efficiency.
[0050] The water flowing out of the air inlet duct 2 and the water separated by the separator 6 both flow downwards under the action of gravity until they flow back into the water tank 3 through the drain outlet 8 and the drain pipe 9.
[0051] Example 2: Figure 7 As shown, the structure and principle of this embodiment are basically the same as those of Embodiment 1. The similarities will not be repeated here; only the differences will be described. The difference lies in the following: the outlet section 2c is a bend, and the attached diagram shows a right-angle bend. The inner port of the inlet pipe 2 faces downwards. During operation of the wet scrubber, the airflow direction in the bend section between the lowermost separation plate 6 and the side wall of the cylinder 1 in the meandering channel 7 is from right to left and from bottom to top. Therefore, the orientation of the inner port of the inlet pipe 2 is opposite to the airflow direction in the bend section between the lowermost separation plate 6 and the side wall of the cylinder 1 in the meandering channel 7. In other words, the bend section between the lowermost separation plate 6 and the side wall of the cylinder 1 in the meandering channel 7 is located on the left side of the cylinder 1. Thus, the outlet section 2c causes the inner port of the inlet pipe 2 to face downwards and be located on the right side of the aforementioned bend section. Depending on the actual situation, other angles can be selected for the bend, such as a 45° bend or a 60° bend.
[0052] Example 3: This example is basically the same as Example 1 in structure and principle. The similarities will not be described again. Only the differences will be described. The difference is that the outlet section (2c) includes a straight pipe section connected to the inner end of the spiral section (2b) at one end and a flared section connected to the other end of the straight pipe section.
[0053] Example 4: This example is basically the same as Example 1 in structure and principle. The similarities will not be described again. Only the differences will be described. The difference is that the outlet section (2c) includes a straight pipe section connected to the inner end of the spiral section (2b) at one end and a constricted section connected to the other end of the straight pipe section.
[0054] Example 5: Figure 8As shown, this embodiment is basically the same in structure and principle as Embodiment 1. The similarities will not be repeated here; only the differences will be described. The difference lies in the following: a baffle plate 17 for changing the airflow direction is provided inside the spiral section 2b. A channel is left between one edge of the baffle plate 17 and one side wall of the spiral section 2b, and the other three edges of the baffle plate 17 are fixedly connected to the other three side walls of the spiral section 2b in a corresponding manner. Multiple orderly arranged air passage holes are provided on the baffle plate 17. This structure not only allows some water adhering to the pipe wall to re-mix into the airflow, increasing the water mist content in the airflow, but also allows water mist and dust to flow through narrow areas, increasing the possibility of water mist and dust combining. There can be one or more baffle plates 17, arranged along the extension direction of the side wall of the spiral section 2b. Some water supply holes 12 can be opened on the inner side wall of the spiral section 2b, and the water supply pipes 11 corresponding to the water supply holes 12 are also installed on the inner side wall of the spiral section 2b. A water inlet hole 12 is provided on the side wall of the spiral section 2b opposite to the baffle 17. This allows water to be added to the airflow in narrow places, and the high-speed airflow can further disperse the water to form water mist, thereby increasing the water mist content in the airflow.
Claims
1. A high-efficiency spiral spray wet dust collector, comprising a cylinder (1) and an air inlet pipe (2), wherein the cylinder (1) is vertically arranged and a fan (4) connected to the top of the inner cavity is installed on the top wall of the cylinder (1), and multiple inclined and staggered separation plates (6) are provided on the upper part of the inner cavity of the cylinder (1), the separation plates (6) and the side wall of the cylinder (1) form a meandering channel (7), and a drain outlet (8) is provided on the bottom wall of the cylinder (1); characterized in that, An installation port (1a) is provided on the lower side wall of the inner cavity of the cylinder (1). The air inlet pipe (2) includes a spiral section (2b), an inlet section (2a) connected to the outer end of the spiral section (2b), and an outlet section (2c) connected to the inner end of the spiral section (2b). The radius of the spiral section (2b) gradually increases from the inside to the outside. The air inlet pipe (2) is embedded in the installation port (1a) and the side wall of the cylinder (1) is sealed and fixedly connected to the side wall of the air inlet pipe (2). The inner end area of the air inlet pipe (2) is located in the inner cavity of the air inlet pipe (2), and the outer end area of the air inlet pipe (2) is located outside the side wall of the air inlet pipe (2). The outlet section (2c) makes the air inlet pipe... (2) The inner port is located directly below the bottom separation plate (6), and the inner port of the air inlet pipe (2) is set opposite to the airflow direction of the bend area between the bottom separation plate (6) and the side wall of the cylinder (1) in the detour channel (7); the wet dust collector also includes a water spray assembly (10) and multiple sets of water supply pipes (11). The water spray assembly (10) is located in the inlet section (2a), and multiple water supply holes (12) are opened on the side wall of the spiral section (2b). The multiple water supply holes (12) are arranged along the extension direction of the side wall of the spiral section (2b), and the multiple sets of water supply pipes (11) are connected to the multiple water supply holes (12) one by one.
2. The high-efficiency spiral spray wet dust collector according to claim 1, characterized in that, The spiral segment (2b) gradually decreases in size from the outer end to the inner end.
3. The high-efficiency spiral spray wet dust collector according to claim 1, characterized in that, The air inlet pipe (2) has a rectangular cross-section and the side wall of the air inlet pipe (2) is vertically arranged; the outer side wall of the inlet section (2a) and the outer side wall of the outlet section (2c) are both tangent to the outer side wall of the spiral section (2b).
4. The high-efficiency spiral spray wet dust collector according to claim 3, characterized in that, The water supply hole (12) is located on the outer or inner sidewall of the spiral section (2b), and the water supply hole (12) is strip-shaped and vertically arranged.
5. The high-efficiency spiral spray wet dust collector according to claim 4, characterized in that, The water supply holes (12) are arranged at equal intervals or the spacing between adjacent water supply holes (12) decreases from the outer end of the spiral section (2b) to the inner section.
6. The high-efficiency spiral spray wet dust collector according to claim 4, characterized in that, The water supply pipe (11) includes a strip-shaped square tube section (11a) and a round tube section (11b) for connecting to the water supply pipe. The square tube section (11a) is vertically arranged and is fixedly connected to the outer wall of the air inlet pipe (2), the inner wall of the air inlet pipe (2), or the side wall of the cylinder (1). One side wall of the square tube section (11a) has a strip-shaped opening, and the opening of the square tube section (11a) is connected to the water supply hole (12).
7. The high-efficiency spiral spray wet dust collector according to any one of claims 1 to 6, characterized in that, The outer wall of the spiral segment (2b) has an arcuate region that matches the inner surface of the cylindrical body (1), and the arcuate region of the outer wall of the spiral segment (2b) is in contact with the inner surface of the cylindrical body (1).
8. The high-efficiency spiral spray wet dust collector according to any one of claims 1 to 6, characterized in that, The outlet section (2c) is a straight pipe. The center line of the outlet section (2c) is set perpendicular to the bottom edge of the bottom separation plate (6). The bending area between the bottom separation plate (6) and the side wall of the cylinder (1) in the meandering channel (7) is located in the inner cavity of the cylinder (1) on one side. The inner port of the air inlet pipe (2) faces the side wall of the inner cavity of the cylinder (1) on the other side. Alternatively, the outlet section (2c) may be a bend, and the inner end of the inlet pipe (2) may be set downwards; The outlet section (2c) includes a straight pipe section whose one end is connected to the inner end of the spiral section (2b) and a flared section whose other end is connected to the straight pipe section; The outlet section (2c) includes a straight pipe section whose one end is connected to the inner end of the spiral section (2b) and a constricted section whose other end is connected to the straight pipe section.
9. The high-efficiency spiral spray wet dust collector according to any one of claims 1 to 6, characterized in that, An adjusting plate (14) is provided in the inner end area of the air inlet pipe (2). The adjusting plate (14) has multiple small holes arranged in an orderly manner. The adjusting plate (14) is rotatably connected to the pipe wall of the air inlet pipe (2) through a rotating shaft (15). A locking component for locking the adjusting plate (14) is also installed on the pipe wall of the air inlet pipe (2).
10. The high-efficiency spiral spray wet dust collector according to claim 3, 4, 5, or 6, characterized in that, The spiral section (2b) is provided with a baffle plate (17) for changing the direction of airflow. A channel is left between one edge of the baffle plate (17) and one side wall of the spiral section (2b). The other three edges of the baffle plate (17) are fixedly connected to the other three side walls of the spiral section (2b) one by one. Multiple air passage holes are opened on the baffle plate (17). The number of baffle plates (17) is one or more, and multiple baffle plates (17) are arranged along the extension direction of the side wall of the spiral section (2b).