Stirring device and mixer having the same
By setting contact areas with different adhesive properties and purging components on the stirring blades, ventilation slots are formed and gas is sprayed out, which solves the problem of stirring blade adhesion in the semi-dry desulfurization process, achieves uniform mixing and equipment stability, and reduces equipment wear and noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENHUA SHENDONG COAL GRP
- Filing Date
- 2023-11-09
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, during the semi-dry desulfurization process, the solid-liquid mixture tends to stick to the stirring blades during stirring, resulting in uneven mixing and unstable equipment operation. Existing methods cannot effectively solve this problem.
Design a stirring device with multiple contact areas on the stirring blades. Each area has a different adhesive layer, forming a ventilation channel. Combined with a purging component, gas is sprayed out during the stirring process. The gas carries away the adhering material through the ventilation channel, forming a vortex to clean the stirring blades.
It effectively prevents solid-liquid mixtures from sticking to the mixing blades, improves mixing uniformity, reduces equipment wear and noise, extends equipment life, and reduces operating costs.
Smart Images
Figure CN117298894B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of semi-dry desulfurization technology, and more specifically, to a stirring device and a mixer having the same. Background Technology
[0002] Semi-dry desulfurization is a commonly used flue gas desulfurization method, which has advantages such as high desulfurization efficiency, strong adaptability, and low equipment investment and operating costs. However, semi-dry desulfurization also has some problems in its application. One prominent issue is that when using an external desulfurizing agent humidifying mixer, more and more powder tends to adhere to the blades and inner wall of the humidifying mixer. This not only causes problems such as unstable rotation balance of the humidifying mixer and increased energy consumption, but may even lead to the shutdown of the humidifying mixer. It also causes problems such as uneven mixing of the solid-liquid mixture during stirring, solid deposition, gas generation, agglomeration, and clumping. Therefore, when mechanically stirring the solid-liquid mixture, it is necessary to solve the problem of powder adhering to the stirring components.
[0003] In existing technologies, the following methods are typically used to solve adhesion problems, especially when stirring mixtures with high viscosity or containing colloidal substances:
[0004] 1) When solid particles are large in size or have sticky substances on their surface, they are prone to agglomeration, leading to adhesion. Solutions include: using pretreatment equipment, such as crushers or grinders, to refine the solid particles; adding appropriate suspending or dispersing agents to improve particle dispersibility; and using suitable mixer parameters, such as speed and time, to enhance dispersion. However, this method, on the one hand, affects the desulfurization effect, and on the other hand, lacks theoretical and data support.
[0005] 2) When the mixture is highly viscous, the mixing paddle can easily become clogged by the adhering material, leading to a decrease in mixing efficiency. Solutions include: choosing mixing appliances with anti-sticking properties, such as scraper, anchor, or spiral mixers; increasing the number and length of mixers to increase the mixing area; and regularly cleaning and maintaining the mixing paddle and container walls to prevent the accumulation of buildup. However, even with these methods, sticking may still occur.
[0006] 3) When sticky substances adhere to the surface of the mixer, it causes operational difficulties and cleaning inconvenience. Solutions include: selecting a smooth, non-stick material for the mixer, such as stainless steel or a special adhesive layer; adding a cleaning system and using high-pressure water or cleaning agents for regular cleaning; and using anti-sticking agents or lubricants to reduce the adhesion of substances. However, this method cannot be used for online cleaning during the operation of desulfurization equipment.
[0007] 4) When the mixing speed, time, and agitator design are unsuitable for certain liquids or solids, adhesion problems may occur. Solutions include: optimizing parameters based on the properties of the mixture, appropriately adjusting the mixing speed, time, and agitator shape; and conducting tests and experiments to determine the optimal operating conditions. However, in semi-dry desulfurization applications, the operating parameters have little impact on adhesion.
[0008] 5) The adhesion problem can be solved by adding a mechanical dust removal device to the blades. However, this method has disadvantages such as aggravating blade wear, reducing equipment life, and significantly increasing equipment operating noise.
[0009] 6) Compressed air is used to clean the blades. However, since the blade surface is flat, the compressed air relies solely on the kinetic energy of the air itself when sweeping across the blade surface, and its ability to remove dust is very weak, making it of poor practical value.
[0010] In summary, due to the numerous factors influencing the adhesion problem in solid-liquid mixing mixers, the above measures cannot effectively solve the problem of the mixture adhering to the mixing blades during mechanical mixing of solid and liquid mixtures in the semi-dry desulfurization process. Summary of the Invention
[0011] The main objective of this invention is to provide a stirring device and a mixer having the same, so as to solve the problem that the mixture sticks to the stirring blades when stirring solid-liquid mixtures in the prior art.
[0012] To achieve the above objectives, according to one aspect of the present invention, a stirring device is provided, comprising: a stirring blade rotatably disposed, the stirring blade having a stirring contact surface, the stirring contact surface including a plurality of contact areas, each contact area having an adhesive layer disposed thereon, the adhesive layers of any two adjacent contact areas having different adhesive properties, so that when stirring the material to be stirred, different volumes of the material to be stirred adhere to the two adjacent contact areas, so that the material to be stirred adhered at the two adjacent contact areas has a height difference, thereby forming a ventilation groove; and a purging component having a nozzle disposed toward the stirring contact surface, so as to spray gas toward the stirring contact surface during the stirring process of the stirring blade, and when the ventilation groove is formed on the stirring contact surface, the gas is blown toward the inner wall of the ventilation groove.
[0013] Furthermore, when the material to be stirred has electrostatic adsorption properties, the adhesive layers with different adhesion at two adjacent contact areas are adhesive layers with different electrostatic adsorption degrees; or when the material to be stirred has surface roughness properties, the adhesive layers with different adhesion at two adjacent contact areas are adhesive layers with different roughness.
[0014] Furthermore, the multiple contact areas are multiple strip-shaped areas arranged in parallel to each other; the ventilation slots are strip-shaped slots; or the multiple contact areas are multiple annular areas, with the axes of each contact area coinciding; the ventilation slots are annular slots or polygonal slots.
[0015] Furthermore, the multiple contact areas include multiple first contact areas and multiple second contact areas arranged in sequence; wherein, a second contact area is provided between any two adjacent first contact areas, and there are multiple ventilation slots.
[0016] Furthermore, the nozzle is strip-shaped, and the extension direction of the nozzle is the same as the extension direction of the contact area; and / or the axis of the ventilation cavity of the purging component forms a first angle with the plane of the stirring contact surface, the first angle being greater than 0° and less than 90°, so that the gas blown out by the nozzle forms a vortex in the ventilation slot; and / or the width dimension of the contact area is d1, 0.5cm≤d1≤1.5cm.
[0017] Furthermore, the contact area is a mesh area, and at least part of the contact area is an array of circular or polygonal areas; the ventilation slot is a circular or polygonal slot; or the ventilation slot is a mesh slot.
[0018] Furthermore, the multiple contact areas include multiple first contact areas and at least one second contact area; wherein, a second contact area is provided between any two adjacent first contact areas.
[0019] Furthermore, the end of the purging component near the nozzle is strip-shaped, and there are multiple nozzles, which are spaced apart along the extension direction of the purging component; and / or the axis of the ventilation cavity of the purging component forms a first angle with the plane of the stirring contact surface, the first angle being greater than 0° and less than 90°, so that the gas blown out by the nozzle forms a vortex in the ventilation groove; and / or the distance between any two adjacent contact areas is d2, 0.5cm≤d2≤1.5cm.
[0020] Furthermore, the stirring device also includes: a sensing component disposed at one end of the purging component near the nozzle, the sensing component being communicatively connected to the purging component to transmit a start signal to the purging component when the sensing component senses the stirring blades; and / or an additive pipeline, the outlet of the additive pipeline being connected to the nozzle to deliver additives to the material to be stirred through the nozzle.
[0021] Furthermore, the stirring device also includes: a device housing, with a purging component disposed on the inner wall of the device housing; a stirring shaft, rotatably disposed, with stirring blades disposed on the stirring shaft; wherein, there are multiple sets of stirring blades, and the multiple sets of stirring blades are spaced apart along the axial direction of the stirring shaft; each set of stirring blades includes multiple stirring blades, and the multiple stirring blades are spaced apart along the circumferential direction of the stirring shaft; there are multiple purging components, and the multiple purging components are disposed one-to-one with the multiple sets of stirring blades.
[0022] According to another aspect of the present invention, a mixer is provided, comprising: the above-described stirring device; and a humidifying spraying component disposed at the inlet of the stirring device.
[0023] Applying the technical solution of this invention, the present invention provides a stirring device, which includes stirring blades and a purging component. The stirring blades are rotatably arranged; the stirring blades have a stirring contact surface, which includes multiple contact areas, each of which is provided with an adhesive layer. The adhesive layers of any two adjacent contact areas have different adhesive strengths. The purging component has a nozzle facing the stirring contact surface. By setting adhesive layers with different adhesive strengths, different volumes of the material to be stirred adhere to adjacent contact areas during stirring, creating a height difference between the materials adhered to adjacent contact areas, thus forming a ventilation groove. By setting the purging component to spray gas onto the stirring contact surface during the stirring process of the stirring blades, and when the ventilation groove is formed on the stirring contact surface, the gas blows towards the inner wall of the ventilation groove, so that the gas carries away the material adhering to the stirring contact surface when passing through the ventilation groove. This solves the problem in the prior art where the mixture adheres to the stirring blades when stirring solid-liquid mixtures in humidifying mixers. Attached Figure Description
[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:
[0025] Figure 1 A schematic diagram of an embodiment of the stirring device according to the present invention is shown;
[0026] Figure 2 A schematic diagram of the stirring blades of the stirring device according to the present invention when not in use is shown; and
[0027] Figure 3 A schematic diagram of the structure of the stirring device according to the present invention, showing the material to be stirred adhering to the stirring blades, is shown.
[0028] The above figures include the following reference numerals:
[0029] 1. Stirring blades; 11. Stirring contact surface; 111. First contact area; 112. Second contact area; 2. Material to be stirred; 3. Ventilation slot; 4. Blowing component; 41. Nozzle; 5. Sensing component; 6. Stirring shaft. Detailed Implementation
[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0031] Please refer to Figures 1 to 3 The present invention provides a stirring device, including a stirring blade 1 and a purging component 4. The stirring blade 1 is rotatably arranged and has a stirring contact surface 11. The stirring contact surface 11 includes multiple contact areas, and each contact area is provided with an adhesive layer. The adhesive layers of any two adjacent contact areas have different adhesive properties, so that when stirring the object to be stirred 2, different volumes of the object to be stirred 2 are adhered to the adjacent contact areas, so that the object to be stirred 2 adhered to the adjacent contact areas has a height difference, thereby forming a ventilation groove 3. The purging component 4 has a nozzle 41, which is arranged towards the stirring contact surface 11, so that gas is sprayed onto the stirring contact surface 11 during the stirring process of the stirring blade 1, and when the ventilation groove 3 is formed on the stirring contact surface 11, the gas is blown toward the inner wall of the ventilation groove 3.
[0032] This invention provides a stirring device, which includes stirring blades 1 and a purging component 4. By setting adhesive layers with different adhesive properties, different volumes of the material to be stirred 2 are adhered to adjacent contact areas during stirring, creating a height difference between the material to be stirred 2 at adjacent contact areas, thus forming a ventilation groove 3. By setting the purging component 4, gas is sprayed onto the stirring contact surface 11 during the stirring process of the stirring blades 1. When the ventilation groove 3 is formed on the stirring contact surface 11, the gas is blown towards the inner wall of the ventilation groove 3, so that the gas carries away the material to be stirred adhering to the stirring contact surface 11 when passing through the ventilation groove 3. This causes the compressed air pulse blown out by the nozzle 41 to form a strong vortex zone in the ventilation groove 3 when passing through the stirring blades 1, and applies lateral stress to the side wall of the ventilation groove 3, thereby cleaning the stirring contact surface 11. This solves the problem in the prior art where the mixture sticks to the stirring blades when stirring solid-liquid mixtures in humidifying mixers.
[0033] Specifically, the adhesive layer with different adhesion to the material to be stirred 2, which is disposed on any two adjacent contact areas among the multiple contact areas, depends on the characteristics of the material to be stirred 2. The specific implementation of the adhesive layer in this embodiment is as follows:
[0034] The first specific implementation is as follows: when the object to be stirred 2 has electrostatic adsorption characteristics, the adhesive layers with different adhesion at two adjacent contact areas are adhesive layers with different electrostatic adsorption degrees, so that the degree of adsorption between the adhesive layer set on the two adjacent contact areas and the object to be stirred 2 is different, thereby making the volume of the object to be stirred that is adhered to on any two adjacent contact areas different, so that a height difference is generated between any two adjacent contact areas, thereby forming a ventilation groove 3.
[0035] The second specific implementation is as follows: when the object to be stirred 2 has a rough surface, the adhesive layers with different adhesion at two adjacent contact areas are adhesive layers with different roughness, so that the friction between the adhesive layers set on the two adjacent contact areas and the object to be stirred 2 is different, thereby making the volume of the object to be stirred that is adhered to on any two adjacent contact areas different, so that a height difference is generated between any two adjacent contact areas, thereby forming a ventilation groove 3.
[0036] In the first embodiment:
[0037] like Figure 1 As shown, the multiple contact areas are multiple strip-shaped areas arranged in parallel to each other; the ventilation slot 3 is a strip slot.
[0038] Specifically, such as Figure 3 As shown, in order to facilitate the setting of the adhesive layer, the multiple contact areas include multiple first contact areas 111 and multiple second contact areas 112 arranged in sequence; wherein, a second contact area 112 is provided between any two adjacent first contact areas 111, and there are multiple ventilation slots 3.
[0039] Optionally, the adhesion between the adhesive layer on the first contact area 111 and the object to be stirred 2 is higher than that between the adhesive layer on the second contact area 112 and the object to be stirred 2, so that during the stirring process, the amount of object to be stirred 2 adhering to the second contact area 112 is less than the amount of object to be stirred adhering to the first contact area 111, thereby forming a ventilation groove 3 between any two first contact areas 111 and the second contact area 112 sandwiched therein.
[0040] Furthermore, the nozzle 41 is strip-shaped, and the extension direction of the nozzle 41 is the same as the extension direction of the contact area, so that the nozzle 41 and the ventilation groove 3 are arranged opposite each other during the stirring process; the axis of the ventilation cavity of the blowing component 4 forms a first angle with the plane of the stirring contact surface 11, the first angle being greater than 0° and less than 90°, so that the gas blown out by the nozzle 41 forms a vortex in the ventilation groove 3.
[0041] Preferably, the ventilation cavity of the purging component 4 is flat, and the length of the nozzle 41 is greater than or equal to the width of the stirring blade 1; the width of the contact area is d1, 0.5cm≤d1≤1.5cm. Experiments have shown that the ventilation groove formed by the width of the contact area within this range has the best impact effect on the side wall of the ventilation groove 3 during use, resulting in better purging effect on the stirring blade 1.
[0042] In this embodiment, by setting the contact area as a strip, the ventilation groove 3 is a strip groove, and the nozzle 41 is set as a strip opposite to the contact area, so that the gas passing through the ventilation groove 3 forms a vortex, which facilitates the removal of the object to be stirred 2 adhering to the stirring contact surface 11.
[0043] In the second embodiment:
[0044] Multiple contact areas are multiple annular areas, and the axes of each contact area coincide; ventilation slot 3 is an annular slot or a polygonal slot.
[0045] The contact area can be either a circular or polygonal ring-shaped region.
[0046] Specifically, in order to facilitate the setting of the adhesive layer, the multiple contact areas include multiple first contact areas 111 arranged in sequence and multiple second contact areas 112 arranged in sequence; wherein, a second contact area 112 is provided between any two adjacent first contact areas 111, and there are multiple ventilation slots 3.
[0047] Optionally, the adhesion between the adhesive layer on the first contact area 111 and the object to be stirred 2 is higher than that between the adhesive layer on the second contact area 112 and the object to be stirred 2, so that during the stirring process, the amount of object to be stirred 2 adhering to the second contact area 112 is less than the amount of object to be stirred adhering to the first contact area 111, thereby forming a ventilation groove 3 between any two first contact areas 111 and the second contact area 112 sandwiched therein.
[0048] Furthermore, the nozzle 41 is strip-shaped, and the extension direction of the nozzle 41 is the same as the extension direction of the contact area, so that the nozzle 41 and the ventilation groove 3 are arranged opposite each other during the stirring process; the axis of the ventilation cavity of the blowing component 4 forms a first angle with the plane of the stirring contact surface 11, the first angle being greater than 0° and less than 90°, so that the gas blown out by the nozzle 41 forms a vortex in the ventilation groove 3.
[0049] Preferably, the ventilation cavity of the purging component 4 is flat, and the length of the nozzle 41 is greater than or equal to the width of the stirring blade 1; the width of the contact area is d1, 0.5cm≤d1≤1.5cm. Experiments have shown that the ventilation groove formed by the width of the contact area within this range has the best impact effect on the side wall of the ventilation groove 3 during use, resulting in better purging effect on the stirring blade 1.
[0050] In this embodiment, by setting the contact area as an annular shape, the ventilation groove 3 is an annular groove, and the nozzle 41 is set as a strip opposite to the contact area, so that the gas passing through the ventilation groove 3 forms a vortex, which facilitates the removal of the material to be stirred 2 adhering to the stirring contact surface 11.
[0051] In the third embodiment:
[0052] The contact area is a mesh area, and at least part of the contact area is arrayed.
[0053] At least part of the contact area is set as a circular area or a polygonal area, so that the ventilation slot 3 is a circular slot or a polygonal slot.
[0054] Specifically, in order to facilitate the setting of the adhesive layer, the multiple contact areas include multiple first contact areas 111 and at least one second contact area 112; wherein, a second contact area 112 is provided between any two adjacent first contact areas 111.
[0055] Optionally, the second contact area is a circular area or a polygonal area, and the first contact area is a mesh area other than a circular or polygonal area; the adhesion between the adhesive layer on the first contact area 111 and the object to be stirred 2 is higher than the adhesion between the adhesive layer on the second contact area 112 and the object to be stirred 2, so that during the stirring process, the amount of object to be stirred 2 adhering to the second contact area 112 is less than the amount of object to be stirred adhering to the first contact area 111, thereby forming ventilation grooves 3 between the first contact area 111 and each of the second contact areas 112.
[0056] Furthermore, the end of the purging component 4 near the nozzle 41 is strip-shaped, and there are multiple nozzles 41. The multiple nozzles 41 are spaced apart along the extension direction of the purging component 4, so that during the stirring process, the multiple nozzles 41 are arranged one-to-one with the multiple contact areas. The axis of the ventilation cavity of the purging component 4 forms a first angle with the plane of the stirring contact surface 11. The first angle is greater than 0° and less than 90°, so that the gas blown out by the nozzle 41 forms a vortex in the ventilation groove 3.
[0057] Preferably, the ventilation cavity of the purging component 4 is set to be flat, and the distance between any two adjacent contact areas is d2, 0.5cm≤d2≤1.5cm. Experiments have shown that the ventilation groove formed by the width of the contact area within this range has the best impact effect on the side wall of the ventilation groove 3 when the blown gas generates vortex in the ventilation groove 3 during use, thus resulting in a better purging effect on the stirring blade 1.
[0058] In this embodiment, by setting the contact area as a mesh, making the ventilation slots 3 circular or polygonal, and setting multiple nozzles 41 opposite to multiple contact areas, the gas passing through the ventilation slots 3 forms a vortex, which facilitates the removal of the material to be stirred 2 adhering to the stirring contact surface 11. This arrangement results in multiple ventilation slots 3 being formed in a dispersed manner, thereby improving the peeling effect of the material to be stirred 2 adhering to the stirring contact surface 11.
[0059] In the fourth embodiment:
[0060] The contact area is a mesh area, and at least part of the contact area is arrayed.
[0061] Among them, at least part of the contact area is set as a circular area or a polygonal area, so that the ventilation slot 3 is a mesh slot other than the circular area or polygonal area.
[0062] Specifically, in order to facilitate the setting of the adhesive layer, the multiple contact areas include multiple first contact areas 111 and at least one second contact area 112; wherein, a second contact area 112 is provided between any two adjacent first contact areas 111.
[0063] Optionally, the first contact area is a circular area or a polygonal area, and the second contact area is a mesh area other than the circular or polygonal area; the adhesion between the adhesive layer on the first contact area 111 and the object to be stirred 2 is higher than the adhesion between the adhesive layer on the second contact area 112 and the object to be stirred 2, so that during the stirring process, the amount of object to be stirred adhering to the second contact area 112 is less than the amount of object to be stirred adhering to the first contact area 111, thereby forming ventilation grooves 3 between each first contact area 111 and the second contact area 112.
[0064] Furthermore, the end of the purging component 4 near the nozzle 41 is strip-shaped, and there are multiple nozzles 41, which are spaced apart along the extension direction of the purging component 4; the axis of the ventilation cavity of the purging component 4 forms a first angle with the plane of the stirring contact surface 11, which is greater than 0° and less than 90°, so that the gas blown out by the nozzle 41 forms a vortex in the ventilation groove 3.
[0065] Preferably, the ventilation cavity of the purging component 4 is set to be flat, and the distance between any two adjacent contact areas is d2, 0.5cm≤d2≤1.5cm. Experiments have shown that the ventilation groove formed by the width of the contact area within this range has the best impact effect on the side wall of the ventilation groove 3 when the blown gas generates vortex in the ventilation groove 3 during use, thus resulting in a better purging effect on the stirring blade 1.
[0066] In this embodiment, by setting the contact area as a mesh, the ventilation channel 3 is a mesh channel except for circular or polygonal areas, so that the gas passing through the ventilation channel 3 forms a vortex, which facilitates the removal of the object to be stirred 2 adhering to the stirring contact surface 11.
[0067] In addition, to facilitate control of the start-up of the purging component 4, the stirring device also includes a sensing component 5. The sensing component 5 is located at the end of the purging component 4 near the nozzle 41. The sensing component 5 is communicatively connected to the purging component 4 so that when the sensing component 5 senses the stirring blade 1, it transmits a start signal to the purging component 4. This arrangement allows for control of the start-up of the purging component when needed, saving compressed air and reducing energy waste.
[0068] Optionally, since the environment in which the purging component 4 and the stirring blade 1 are located is an atomized environment during the stirring process, in order to improve the sensing effect of the sensing component 5, the sensing component 5 includes a transmitter and a receiver. The receiver is disposed on the purging component 4, and the transmitter is disposed on the stirring blade 1 to improve the sensing efficiency.
[0069] Preferably, during the stirring process, when it is necessary to add additives to the material to be stirred, the stirring device also includes an additive pipe. The outlet of the additive pipe is connected to the nozzle 41 to deliver the additive to the material to be stirred 2 through the nozzle 41. When compressed air is blown onto the stirring blades 1, the additive is added to the material to be stirred 2 that is adhering to the stirring contact surface 11. At this time, under the entrainment effect of the vortex, the additive and the blown-off material to be stirred 2 will produce a high-intensity mixing effect, thereby enhancing the mixing effect.
[0070] Furthermore, in order to set the stirring blades 1 and the purging component 4, the stirring device also includes a device housing (not shown in the figure) and a stirring shaft 6. The purging component 4 is set on the inner wall of the device housing. The stirring shaft 6 is rotatably set, and the stirring blades 1 are set on the stirring shaft 6.
[0071] Among them, there are multiple sets of stirring blades 1, and the multiple sets of stirring blades 1 are arranged at intervals along the axial direction of the stirring shaft 6; each set of stirring blades 1 includes multiple stirring blades 1, and the multiple stirring blades 1 are arranged at intervals along the circumferential direction of the stirring shaft 6; there are multiple purging components 4, and the multiple purging components 4 are arranged one-to-one with the multiple sets of stirring blades 1.
[0072] Specifically, the device housing is provided with multiple mounting ports, which are arranged along the extension direction of the stirring shaft 6. Multiple purging components 4 are arranged one-to-one on the multiple mounting ports so that the external pipes of the purging components 4 can be connected to the air compressor. This arrangement facilitates the periodic cleaning, maintenance or replacement of the purging components 4, reducing maintenance costs.
[0073] The present invention also provides a mixer, including the above-mentioned stirring device and humidifying spray component, wherein the humidifying spray component is disposed at the inlet of the stirring device to humidify the material 2 to be stirred that enters the mixer for stirring.
[0074] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:
[0075] The present invention provides a stirring device, which includes a stirring blade 1 and a purging component 4. The stirring blade 1 is rotatably arranged. The stirring blade 1 has a stirring contact surface 11, which includes multiple contact areas. Each contact area is provided with an adhesive layer. The adhesive layer of any two adjacent contact areas has different adhesion. The purging component 4 has a nozzle 41, which is arranged toward the stirring contact surface 11. By setting adhesive layers with different adhesive properties, different volumes of the material to be stirred 2 are adhered to the adjacent contact areas when stirring the material to be stirred 2, so that the material to be stirred 2 adhered to the adjacent contact areas has a height difference, thus forming a ventilation groove 3. By setting a blowing component 4 to spray gas onto the stirring contact surface 11 during the stirring process of the stirring blade 1, and when the ventilation groove 3 is formed on the stirring contact surface, the gas blows towards the inner wall of the ventilation groove 3, so that the gas carries away the material to be stirred adhering to the stirring contact surface 11 when passing through the ventilation groove 3. Thus, the compressed air pulse blown out by the nozzle 41 forms a strong vortex zone in the ventilation groove 3 when passing through the stirring blade 1, and applies lateral stress to the side wall of the ventilation groove 3, so as to clean the stirring contact surface 11. This solves the problem that the mixture will stick to the stirring blade when stirring the solid-liquid mixture in the prior art humidifying mixer.
[0076] It is evident that the cleaning method for the stirring blades provided in this application has less impact on the surface wear and lifespan of the stirring blades compared to mechanical blade ash removal devices, while also avoiding significant noise generation. This extends the service life and reduces operating costs.
[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A stirring device, characterized in that, include: A stirring blade (1) is rotatably arranged. The stirring blade (1) has a stirring contact surface (11). The stirring contact surface (11) includes multiple contact areas. Each contact area is provided with an adhesive layer. The adhesive layer of any two adjacent contact areas has different adhesion properties, so that when stirring the object to be stirred (2), the object to be stirred (2) of different volumes is adhered to the two adjacent contact areas, so that the object to be stirred (2) adhered to the two adjacent contact areas has a height difference, so as to form a ventilation groove (3). The purging component (4) has a nozzle (41) which is arranged toward the stirring contact surface (11) so as to spray gas onto the stirring contact surface (11) during the stirring process of the stirring blade (1) and blow the gas toward the inner wall of the ventilation groove (3) when the ventilation groove (3) is formed on the stirring contact surface (11).
2. The stirring device according to claim 1, characterized in that, When the object to be stirred (2) has electrostatic adsorption characteristics, the adhesive layers with different adhesion at two adjacent contact areas are adhesive layers with different electrostatic adsorption degrees. or When the material to be stirred (2) has a rough surface, the adhesive layers with different adhesion at two adjacent contact areas are adhesive layers with different roughness.
3. The stirring device according to claim 1, characterized in that, The multiple contact areas are multiple parallel strip-shaped areas, and the ventilation slot (3) is a strip-shaped slot; or, The contact area is an annular area, and the axes of all the contact areas coincide. The ventilation groove (3) is an annular groove; or, The contact area is a polygonal annular area, and the axes of each contact area coincide. The ventilation slot (3) is a polygonal slot.
4. The stirring device of claim 3, wherein The plurality of contact areas include a plurality of first contact areas (111) arranged in sequence and a plurality of second contact areas (112) arranged in sequence. Among them, a second contact area (112) is provided between any two adjacent first contact areas (111), and there are multiple ventilation slots (3).
5. The stirring device according to claim 3, characterized in that, The nozzle (41) is strip-shaped, and the extending direction of the nozzle (41) is the same as the extending direction of the contact area; and / or The axis of the ventilation chamber of the purging component (4) forms a first angle with the plane of the stirring contact surface (11), the first angle being greater than 0° and less than 90°, so that the gas blown out by the nozzle (41) forms a vortex in the ventilation slot (3); and / or The width of the contact area is d1, where 0.5cm ≤ d1 ≤ 1.5cm.
6. The stirring device of claim 1, wherein The stirring device also includes: A sensing component (5) is disposed at one end of the purging component (4) near the nozzle (41). The sensing component (5) is communicatively connected to the purging component (4) to transmit a start signal to the purging component (4) when the sensing component (5) senses the stirring blade (1); and / or An additive pipeline, the outlet of which is connected to the nozzle (41) to deliver the additive to the material to be stirred (2) through the nozzle (41).
7. The stirring device according to any one of claims 1 to 6, characterized in that The stirring device also includes: The device housing, wherein the purging component (4) is disposed on the inner wall of the device housing; A stirring shaft (6) is rotatably disposed, and the stirring blades (1) are disposed on the stirring shaft (6); Among them, there are multiple sets of stirring blades (1), and the multiple sets of stirring blades (1) are arranged at intervals along the axial direction of the stirring shaft (6); each set of stirring blades (1) includes multiple stirring blades (1), and the multiple stirring blades (1) are arranged at intervals along the circumferential direction of the stirring shaft (6); there are multiple purging components (4), and the multiple purging components (4) are arranged one-to-one with the multiple sets of stirring blades (1).
8. A mixer characterized by, include: The stirring apparatus according to any one of claims 1 to 7; A humidifying spray component is installed at the inlet of the mixing device.