Efficient spiral spraying wet dust collector

Abstract

The invention provides an efficient spiral spraying wet dust collector, and belongs to the technical field of separation. The wet dust collector solves the problem that the separation rate is insufficient when an existing wet dust collector is used for treating fine particles. The wet dust collector comprises a barrel and an air inlet pipe, wherein the air inlet pipe comprises a spiral section, an inlet section connected with the outer end of the spiral section and an outlet section connected with the inner end of the spiral section; the wet dust collector further comprises a water spraying assembly and multiple sets of water supplementing pipes, the water spraying assembly is located in the inlet section, multiple water supplementing holes are formed in the side wall of the spiral section and arranged in the extending direction of the side wall of the spiral section, and the multiple sets of water supplementing pipes are communicated with the multiple water supplementing holes in a one-to-one correspondence mode. The air inlet pipe of the wet dust collector comprises the spiral section, so that the water mist content in the air inlet pipe is increased by prolonging the flowing length of dust and water mist and continuously supplementing water, the dust collection efficiency is improved, the water consumption is reduced, and the height of the wet dust collector is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of separation, and relates to a wet dust collector, in particular to a high-efficiency spiral spray wet dust collector. Background Art

[0002] Shot peening is a common surface treatment process, mainly used for cleaning, strengthening or pre-treating the surface of workpieces. Shot peening processing includes not only coarse particles (>10μm) of shot fragments and larger impurities, but also fine particles (<10μm, even sub-micron level) formed by metal oxidation or coating decomposition.

[0003] In order to handle the dust formed by shot peening, a variety of special dust collectors have been proposed, such as the wet dust collector for shot peening machines recorded in Chinese patent documents (application number 201520615959.6), and the wet spray dust collector proposed by the inventor (application number 201810751019.8). Existing wet dust collectors have problems with the capture rate of fine particles. The reasons are as follows: 1. The fine particles, fine water mist (<10μm) entering the cylinder from the air inlet pipe and the fine water mist formed by the water mist spraying assembly are lighter, and most of them directly flow to the channel between the lowest inclined plate and the side wall of the cylinder; 2. Fine particles with high hydrophobicity such as stainless steel and paint are not easy to combine with water mist. Summary of the Invention

[0004] The present invention provides a high-efficiency spiral spray wet dust collector. The technical problem to be solved by the present invention is how to improve both the separation rate of fine particles and the separation rate of coarse particles in the wet dust collector.

[0005] The technical problem to be solved by the present invention can be achieved by the following technical solutions: An efficient spiral spray wet dust collector includes a cylinder body and an air inlet pipe. The cylinder body is vertically arranged, and a blower connected to the top of the inner cavity is installed on the top wall of the cylinder body. Multiple inclined and staggered separation plates are arranged in the upper part of the inner cavity of the cylinder body. The separation plates and the side wall of the cylinder body form a tortuous channel. A water discharge port is opened on the bottom wall of the cylinder body. An installation opening is opened on the side wall of the lower part of the inner cavity of the cylinder body. The air inlet pipe includes a spiral section in a spiral shape, 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 air inlet pipe is embedded in the installation opening, and the side wall of the cylinder body is fixedly connected to the side wall of the air inlet pipe in a sealed manner. The inner end area of the air inlet pipe is located in the inner cavity of the air inlet pipe, and the outer end area of the air inlet pipe is located outside the side wall of the air inlet pipe. The outlet section makes the inner port of the air inlet pipe located directly below the lowermost separation plate, and makes the orientation of the inner port of the air inlet pipe opposite to the air flow direction in the bending area between the lowermost separation plate and the side wall of the cylinder body in the tortuous channel. The wet dust collector also includes a water spraying assembly and multiple groups of water supply pipes. The water spraying assembly is located in the inlet section. Multiple water replenishing holes are opened on the side wall of the spiral section. The multiple water replenishing holes are arranged along the extending direction of the side wall of the spiral section. The multiple groups of water supply pipes are connected to the multiple water replenishing holes in a one-to-one correspondence.

[0006] The cylinder body serves as the main structure of the dust collector and bears other components. When the wet dust collector is in use, the water discharge port is inserted into the water tank, and the cylinder body forms a closed space. When the blower operates, the air containing dust particles enters from the outer port of the air inlet pipe, flows spirally through the air inlet pipe, and then enters the cylinder body from the inner port. Then, the water mist and dust are separated through the tortuous channel, and finally the clean air is discharged through the blower.

[0007] The spiral section in a spiral shape is horizontally arranged or arranged with a small angle of inclination. Thus, the radius of the spiral section gradually increases from the inside to the outside. This spiral section not only reduces the required height of the wet dust collector, but also improves the separation rate of dust particles and is conducive to the discharge of water in the air inlet pipe. Specifically, the spiral section guides the air flow to flow in a spiral manner, and uses the centrifugal force to throw the dust particles towards the outer side wall, realizing the separation of particles in the air flow, especially the efficient separation of coarse particles in the air flow. Multiple groups of water supply pipes continuously inject water into the inner cavity of the air inlet pipe, not only forming a water film on the pipe wall, making the centrifugally separated particles mix into the water, but also the high-speed air flow makes the water injected into the air inlet pipe form water mists of different thicknesses, improving the water mist content and uniformity in the air inlet pipe. Especially, the spiral section is filled with water mists from the outer end to the inner end, increasing the possibility of the combination of water mists and fine particles and realizing the improvement of the separation rate of fine particles.

[0008] The orientation and position of the inner port of the air inlet pipe not only extend the air flow path, but also, because the cross-sectional area of the cylinder body is much larger than that of the air inlet pipe, the air flow velocity drops significantly when the air just enters the inner cavity of the cylinder body, increasing the possibility of the combination of water mist and fine particles and realizing the improvement of the separation rate of fine particles.

[0009] The separation plate separates the condensed water, and the large water droplets ejected from the air inlet pipe are discharged through the drain opening under the action of gravity.

[0010] Compared with the prior art, the air inlet pipe of this wet dust collector not only includes a spiral section, but also has the spiral section arranged horizontally or at a small angle of inclination, breaking through the traditional vertical spiral arrangement or tangential arrangement relative to the cylindrical body; both by extending the flow length of dust and water mist, and by continuously replenishing water, the water mist content in the air inlet pipe is increased, achieving the improvement of dust removal efficiency while reducing water consumption, and reducing the height of the wet dust collector.

[0011] In the above-mentioned wet dust collector, the spiral section gradually narrows from the outer end to the inner end.

[0012] In the above-mentioned wet dust collector, the cross-section of the air inlet pipe is rectangular, and the side walls of the air inlet pipe are arranged vertically; the outer side walls of the inlet section and the outlet section are both tangent to the outer side wall of the spiral section.

[0013] In the above-mentioned wet dust collector, the water replenishing holes are located on the outer side wall or the inner side wall of the spiral section, and the water replenishing holes are strip-shaped and arranged vertically.

[0014] In the above-mentioned wet dust collector, the water replenishing pipe includes a strip-shaped square pipe part and a circular pipe part for connecting with a water supply pipe. The square pipe part is arranged vertically, and the square pipe part is fixedly connected to the outer side wall of the air inlet pipe, or the inner side wall of the air inlet pipe, or the side wall of the cylindrical body. An open strip-shaped opening is formed on one side wall of the square pipe part, and the opening of the square pipe part is communicated with the water replenishing hole.

[0015] In the above-mentioned wet dust collector, the outer side wall of the spiral section has an arc region that fits the inner side surface of the cylindrical body, and the arc region of the outer side wall of the spiral section is in contact with the inner side surface of the cylindrical body.

[0016] In the above-mentioned wet dust collector, the outlet section is a straight pipe, the center line of the outlet section is perpendicular to the bottom edge of the lowermost separation plate, the bending region between the lowermost separation plate and the side wall of the cylindrical body in the detour channel is located in one side region of the inner cavity of the cylindrical body, and the inner port of the air inlet pipe faces the side wall of the other side region of the inner cavity of the cylindrical body.

[0017] In the above-mentioned wet dust collector, the outlet section is a bent pipe, and the inner port of the air inlet pipe is arranged downward.

[0018] In the above-mentioned wet dust collector, an adjusting plate is arranged in the inner end region of the air inlet pipe. A plurality of small holes are arranged in an orderly manner on the adjusting plate. The adjusting plate is rotatably connected to the pipe wall of the air inlet pipe through a rotating shaft (15), and a locking member for locking the rotation of the adjusting plate is also installed on the pipe wall of the air inlet pipe.

[0019] In the above wet dust collector, a baffle for changing the flow direction of the air flow is arranged in the spiral section. A channel is left between one edge of the baffle and one side wall of the spiral section, and the remaining three edges of the baffle are fixedly connected to the remaining three side walls of the spiral section in one-to-one correspondence. A plurality of orderly arranged air passing holes are formed in the baffle; the number of baffles is one or more, and the plurality of baffles are arranged along the extending direction of the side wall of the spiral section.

[0020] In the above wet dust collector, a water replenishing hole is arranged on the side wall of the spiral section opposite to the baffle. Description of the Drawings

[0021] Figure 1 and Figure 2 are schematic three-dimensional structural diagrams of the wet dust collector from different perspectives.

[0022] Figure 3 is the schematic front view structural diagram of the wet dust collector.

[0023] Figure 4 is Figure 3 the schematic cross-sectional structural diagram taken along A-A in

[0024] Figure 5 is Figure 4 the schematic cross-sectional structural diagram taken along B-B in

[0025] Figure 6 is the schematic exploded structural diagram of the wet dust collector.

[0026] Figure 7 is the schematic three-dimensional structural diagram of the air inlet pipe in the second embodiment.

[0027] Figure 8 is the schematic cross-sectional structural diagram taken along A-A in the third embodiment.

[0028] In the figure, 1, cylinder body; 1a, installation opening; 2, air inlet pipe; 2a, inlet section; 2b, spiral section; 2c, outlet section; 3, water tank; 4, fan; 5, support feet; 6, separation plate; 7, tortuous channel; 8, drain opening; 9, drain pipe; 10, spraying assembly; 11, water replenishing pipe; 11a, square pipe part; 11b, round pipe part; 12, water replenishing hole; 13, communication hole; 14, adjusting plate; 15, rotating shaft; 16, water pump; 17, baffle. Detailed Embodiments

[0029] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by 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. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0031] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0034] Example 1: As Figures 1 to 6 shown, a wet dust collector with a horizontal spiral section inlet duct includes a cylinder body 1, an inlet duct 2, a water tank 3 and a fan 4.

[0035] On the ground where the water tank 3 is placed, the cylinder 1 is vertically arranged above the water tank 3, and the cylinder 1 is fixedly connected to the water tank 3 through multiple support feet 5. The attached drawing of the specification shows that the cylinder 1 is cylindrical, and according to the actual situation, the cylinder 1 can also be square-columnar.

[0036] The fan 4 is installed on the top wall of the cylinder 1. The fan 4 is communicated with the top of the inner cavity of the cylinder 1. When the fan 4 operates, it extracts the gas in the inner cavity of the cylinder 1 to form a negative pressure. Multiple inclined and staggered separation plates 6 are arranged in the upper part of the inner cavity of the cylinder 1, and a circuitous channel 7 is formed in the upper part of the inner cavity of the cylinder 1. The attached drawing of the specification shows that the number of separation plates 6 is 3. According to the actual situation, the number of separation plates 6 can be increased or decreased adaptively, such as 2 or 4.

[0037] The bottom wall of the cylinder 1 is conical and a drain opening 8 is opened at the center. The drain opening 8 is communicated with a drain pipe 9 inserted into the water tank 3. When the water tank 3 stores water and the inner cavity of the cylinder 1 is in a negative pressure state, the above structure can prevent air from entering the inner cavity of the cylinder 1 through the drain opening 8.

[0038] The cross-section of the air inlet pipe 2 is rectangular, and the side wall of the air inlet pipe 2 is vertically arranged. The air inlet pipe 2 includes an inlet section 2a, a spiral section 2b, and an outlet section 2c from outside to inside. The spiral section 2b is horizontally arranged and spiral; the spiral section 2b gradually narrows from the outer end to the inner end. The spiral section 2b not only makes the air flow spirally, increasing the centrifugal force of dust particles, but also improves the possibility of the combination of dust and water mist by narrowing the air flow channel. The outer side walls of the inlet section 2a and the outlet section 2c are both tangent to the outer side wall of the spiral section 2b. This structure improves the smoothness of the outer side wall of the air inlet pipe 2 and realizes the improvement of the stability and smoothness of the air flow.

[0039] According to the actual situation, the spiral section 2b can also be set with a small angle inclination to replace the above horizontal setting. The inclination angle is less than 5°. The inner end of the spiral section 2b is slightly lower than the outer end of the spiral section 2b. This is beneficial for water drainage. Especially after shutdown, the water in the air inlet pipe 2 can naturally drain under the action of gravity, significantly extending the service life of the air inlet pipe 2.

[0040] An installation opening 1a is opened on the side wall of the lower part of the inner cavity of the cylinder 1. The air inlet pipe 2 is embedded in the installation opening 1a, and the side wall of the cylinder 1 is hermetically 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 the air inlet pipe 2 and the cylinder 1 are fixedly connected by welding. The outer side wall of the spiral section 2b has an arc area that coincides with the inner side surface of the cylindrical cylinder 1. The arc area of the outer side wall of the spiral section 2b is attached to the inner side surface of the cylinder 1 to form a positioning structure, improving the convenience of installing 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, and the outer end area of the spiral section 2b and the inlet section 2a are located outside the side wall of the air inlet pipe 2.

[0041] The outlet section 2c is a straight pipe, and the center line of the outlet section 2c is vertically arranged with respect to the bottom edge of the lowermost separation plate 6. As Figure 5 shown, the inner port of the air inlet pipe 2 faces to the right. When the wet dust collector is operating, the air flow direction in the bending section area between the lowermost separation plate 6 and the side wall of the cylinder body 1 in the detour channel 7 is from right to left and from bottom to top. The arrows in the figure indicate the air flow direction. Thus, the inner port of the air inlet pipe 2 is arranged opposite to the air flow direction in the bending area between the lowermost separation plate 6 and the side wall of the cylinder body 1 in the detour channel 7. In other words, the bending area between the lowermost separation plate 6 and the side wall of the cylinder body 1 in the detour channel 7 is located in the left area of the cylinder body 1. Then, the outlet section 2c makes the inner port of the air inlet pipe 2 face to the right and the inner port of the air inlet pipe 2 is located on the right side of the above-mentioned bending area.

[0042] A water spraying assembly 10 is installed inside the inlet section 2a. The inlet section 2a is shown as a right-angle elbow pipe in the attached drawing of the specification. The outer port of the air inlet pipe 2 is arranged upward. A set of water spraying assemblies 10 are arranged inside both the vertical section and the straight section of the inlet section 2a. The water spraying assembly 10 includes a water spraying pipe, and strip-shaped water spraying openings are formed on the side wall of the water spraying pipe. According to the actual situation, the inlet section 2a can also be a straight pipe arranged horizontally, and a set of water spraying assemblies 10 can also be arranged inside the inlet section 2a. The water spraying assembly 10 includes a water supply pipe and a plurality of nozzles installed on the water supply pipe.

[0043] The wet dust collector further includes multiple groups of water supply pipes 11. A plurality of water replenishing holes 12 are formed on the side wall of the spiral section 2b. The plurality of water replenishing holes 12 are arranged along the extending direction of the side wall of the spiral section 2b. The multiple groups of water supply pipes 11 are connected to the plurality of water replenishing holes 12 in a one-to-one correspondence. The water replenishing holes 12 are shown on the outer side wall of the spiral section 2b in the attached drawing of the specification. The water replenishing holes 12 are strip-shaped and vertically arranged. The number of the water replenishing holes 12 is 8, and the water replenishing holes 12 are arranged at equal intervals. The number of the water replenishing holes 12 can be adaptively increased or decreased according to the actual situation, or the distance between adjacent water replenishing holes 12 is reduced from the outer end to the inner section of the spiral section 2b. The water supply pipe 11 includes a square pipe portion 11a with a strip shape and an open end on one side wall and a circular pipe portion 11b connected to the water supply pipeline. The open end of the square pipe portion 11a is connected to the water replenishing hole 12. Water replenishing holes 12 are also formed on the arc area of the outer side wall of the spiral section 2b. The water supply pipe 11 corresponding to the water replenishing holes 12 on the arc area is fixed on the cylinder body 1, and a communication hole 13 matching the water replenishing hole 12 is formed on the cylinder body 1; the remaining square pipe portions 11a are fixed on the outer side wall of the spiral section 2b.

[0044] An adjusting plate 14 is arranged in the inner end area of the air inlet pipe 2. A plurality of orderly arranged small holes are formed in the adjusting plate 14. The adjusting plate 14 is rotationally connected to the pipe wall of the air inlet pipe 2 through a rotating shaft 15. A locking member for locking the rotation of the adjusting plate 14 is also installed on the pipe wall of the air inlet pipe 2. When the adjusting plate 14 is in a rotatable state, the coincidence degree of the adjusting plate 14 and the cross-section of the air inlet pipe 2 is adjusted by rotating the adjusting plate 14, so as to adjust the pressure difference between the inside of the air inlet pipe 2 and the inside of the cylinder body 1. The adjusting plate 14 also has the functions of dispersing air flow and forming water mist, improving the water mist content and uniformity in the air flow.

[0045] The outlet section 2c includes a fixed part integrally connected with the spiral section 2b and a tail part detachably connected to the fixed part. The adjusting plate 14 is installed on the tail part, thereby further improving the water mist content and uniformity in the cylinder body 1; the tail part is removed to facilitate the cleaning and maintenance of the adjusting plate 14 and replace the tail part according to the actual working conditions. Usually, the above adjustment operations are carried out according to different fine dust contents. The higher the fine dust content, the higher the coincidence degree of the two.

[0046] The outer port of the air inlet pipe 2 is connected to the shot blasting equipment through a pipeline. By elaborating on the operation process of the wet dust collector, the functions and advantages of each component are further explained. Water is stored in the water tank 3. A filter screen is installed in the water tank 3. A water pump 16 is installed on the water tank 3. All the water supply pipes 11 and the water spraying assemblies 10 are connected to the water pump 16 through pipelines; the operation of the water pump 16 makes water continuously spray out from the water spraying assemblies 10 and the water replenishing holes 12.

[0047] The operation of the fan 4 makes the inner cavity of the cylinder body 1 form a negative pressure. Then, the gas containing dust in the shot blasting equipment enters the air inlet pipe 2 through the pipeline, and then enters the cylinder body 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 through the fan 4.

[0048] The water spraying assembly 10 mixes a large amount of water droplets and water mist with the dust in the air flow, that is, the water droplets and water mist are pre-mixed with the dust at the inlet section 2a. The spiral section 2b guides the air flow to flow in a spiral manner. Thus, both water and dust form centrifugal forces, and usually the coarse particulate matter in the dust can be efficiently separated; since water has a larger specific gravity than air, most of the water droplets and water mist are also thrown towards the outer side wall. Multiple groups of water supply pipes 11 continuously inject water into the inner cavity of the air inlet pipe 2, and the air flow makes the water re-form water mist, thereby significantly increasing the water mist content and uniformity in the air flow from the outer end to the inner end of the spiral section 2b, realizing the improvement of the possibility of the combination of water mist and fine particles; if the fine particles are combined with the water mist, usually the fine particles are captured and no longer return to the air flow.

[0049] Due to the low air flow velocity, high water mist concentration and long travel distance in the cylinder body 1, the water mist in the cylinder body 1 can still efficiently capture fine particles, realizing the improvement of the dust removal efficiency.

[0050] The water flowing out of the air inlet pipe 2 and the water separated by the separation plate 6 both flow downward under the action of gravity until they flow back into the water tank 3 through the drain port 8 and the drain pipe 9.

[0051] Embodiment 2: As Figure 7 shown, the structure and principle of this embodiment are basically the same as those of Embodiment 1, and the basic same parts will not be described redundantly. Only the different parts will be described. The different part is that the outlet section 2c is a bent pipe. The bent pipe shown in the attached drawing of the specification is a right-angle bent pipe. The inner port of the air inlet pipe 2 is arranged downward. When the wet dust collector is operating, the air flow direction in the bending section area between the lowermost separation plate 6 and the side wall of the cylinder body 1 in the detour channel 7 is from right to left and from bottom to top. Therefore, the inner port of the air inlet pipe 2 is arranged opposite to the air flow direction in the bending area between the lowermost separation plate 6 and the side wall of the cylinder body 1 in the detour channel 7. In other words, the bending area between the lowermost separation plate 6 and the side wall of the cylinder body 1 in the detour channel 7 is located in the left area of the cylinder body 1. Then, the outlet section 2c makes the inner port of the air inlet pipe 2 face downward and the inner port of the air inlet pipe 2 is located on the right side of the above-mentioned bending area. According to the actual situation, the bent pipe can be selected with other angles, such as a 45° bent pipe or a 60° bent pipe.

[0052] Embodiment 3: The structure and principle of this embodiment are basically the same as those of Embodiment 1, and the basic same parts will not be described redundantly. Only the different parts will be described. The different part is that the outlet section (2c) includes a straight pipe portion connected to the inner end of the spiral section (2b) at one end and a flared portion connected to the other end of the straight pipe portion.

[0053] Embodiment 4: The structure and principle of this embodiment are basically the same as those of Embodiment 1, and the basic same parts will not be described redundantly. Only the different parts will be described. The different part is that the outlet section (2c) includes a straight pipe portion connected to the inner end of the spiral section (2b) at one end and a reduced diameter portion connected to the other end of the straight pipe portion.

[0054] Embodiment 5: As Figure 8As shown, the structure and principle of this embodiment are basically the same as those of the first embodiment. The same parts will not be described redundantly, and only the different parts will be described. The differences are as follows: A baffle 17 for changing the flow direction of the air flow is arranged in the spiral section 2b. There is a channel left between one edge of the baffle 17 and one side wall of the spiral section 2b. The remaining three edges of the baffle 17 are fixedly connected to the remaining three side walls of the spiral section 2b in a one-to-one correspondence. A plurality of orderly arranged air passing holes are formed in the baffle 17. This structure not only makes part of the water attached to the pipe wall re-mix into the air flow, increasing the water mist content in the air flow, but also makes the water mist and dust flow through a narrow area, increasing the possibility of combination of the water mist and the dust. The number of the baffles 17 is one or more, and the multiple baffles 17 are arranged along the extending direction of the side wall of the spiral section 2b. Part of the water replenishing holes 12 can be formed in the inner side wall of the spiral section 2b, and then the water replenishing pipes 11 corresponding to the above water replenishing holes 12 are also installed on the inner side wall of the spiral section 2b. A water replenishing hole 12 is arranged on the side wall of the spiral section 2b opposite to the baffle 17, so that the air flow can be replenished with water at a narrow place, and the high-speed air flow can more effectively disperse the water to form water mist, that is, increase the water mist content in the air flow.

Claims

1. An efficient spiral spray wet dust collector, comprising a cylinder body (1) and an air inlet pipe (2). The cylinder body (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 body (1). Multiple inclined and staggered separation plates (6) are arranged in the upper part of the inner cavity of the cylinder body (1). The separation plates (6) and the side wall of the cylinder body (1) form a meandering channel (7). A water discharge port (8) is opened on the bottom wall of the cylinder body (1); it is characterized in that A mounting opening (1a) is provided on the side wall of the lower part of the inner cavity of the cylinder (1); the air inlet pipe (2) comprises 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 mounting opening (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 region of the air inlet pipe (2) is located in the inner cavity of the air inlet pipe (2), the outer end region of the air inlet pipe (2) is located outside the side wall of the air inlet pipe (2), and the outlet section (2c) allows the air inlet pipe to be inserted into the mounting opening (1a). The inner port of the air inlet pipe (2) is located directly below the lowest separation plate (6), and the inner port of the air inlet pipe (2) is arranged in a direction opposite to the air flow direction of the bending area between the lowest 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 a plurality of water replenishment pipes (11), the water spray assembly (10) is located in the inlet section (2a), a plurality of water replenishment holes (12) are opened on the side wall of the spiral section (2b), the plurality of water replenishment holes (12) are arranged along the extension direction of the side wall of the spiral section (2b), and the plurality of water replenishment pipes (11) are connected to the plurality of water replenishment holes (12) in a one-to-one correspondence.

2. The high-efficiency spiral spray wet dust collector according to claim 1, characterized in that, The spiral section (2b) gradually decreases from the outer end to the inner end.

3. The high-efficiency spiral spray wet dust collector according to claim 1, wherein, The cross section of the air inlet pipe (2) is rectangular, and the side wall of the air inlet pipe (2) is arranged vertically; the outer side wall of the inlet section (2a) and the outer side wall of the outlet section (2c) are both arranged tangent to the outer side wall of the spiral section (2b).

4. The high-efficiency spiral spray wet dust collector according to claim 3, wherein The water replenishment hole (12) is located on the outer wall or the inner wall of the spiral section (2b), and the water replenishment 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 replenishment holes (12) are arranged at equal intervals or the intervals between adjacent water replenishment holes (12) decrease from the outer end to the inner section of the spiral section (2b).

6. The high-efficiency spiral spray wet dust collector according to claim 4, wherein The water supply pipe (11) comprises a strip-shaped square pipe portion (11a) and a round pipe portion (11b) for connecting to a water supply pipe. The square pipe portion (11a) is arranged vertically. The square pipe portion (11a) is fixedly connected to the outer wall of the air inlet pipe (2) or the inner wall of the air inlet pipe (2) or the side wall of the cylinder (1). One side wall of the square pipe portion (11a) is provided with a strip-shaped opening. The opening of the square pipe portion (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 section (2b) has an arc region that matches the inner side surface of the cylindrical body (1), and the arc region of the outer wall of the spiral section (2b) fits the inner side 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 arranged perpendicularly to the bottom edge of the lowest separation plate (6), the bending area between the lowest separation plate (6) and the side wall of the cylinder (1) in the detour channel (7) is located in an area on one side of the inner cavity of the cylinder (1), and the inner port of the air inlet pipe (2) faces the side wall of the area on the other side of the inner cavity of the cylinder (1); Or the outlet section (2c) is a curved pipe, and the inner end of the air inlet pipe (2) is arranged downward; Or the outlet section (2c) includes a straight pipe portion with one end connected to the inner end of the spiral section (2b) and a flared portion connected to the other end of the straight pipe portion; Or the outlet section (2c) includes a straight pipe portion with one end connected to the inner end of the spiral section (2b) and a reduced-diameter portion connected to the other end of the straight pipe portion.

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 arranged in the inner end region of the air inlet pipe (2). A plurality of small holes are arranged in an orderly manner on the adjusting plate (14). The adjusting plate (14) is rotatably connected to the pipe wall of the air inlet pipe (2) through a rotating shaft (15). A locking member for locking the rotation of 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 or 4 or 5 or 6, characterized in that, A baffle plate (17) for changing the air flow direction is arranged in 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). 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 one-to-one correspondence. A plurality of air passing holes are arranged in an orderly manner on the baffle plate (17); the number of baffle plates (17) is one or more, and multiple baffle plates (17) are arranged along the extending direction of the side wall of the spiral section (2b).

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