Automatic powder raw material adding and metering device for dust suppressant preparation

Abstract

The invention discloses an automatic powder raw material adding and metering device for dust suppressant preparation, and belongs to the field of dust suppressant production. Comprising a material storage box, a liquid storage cavity and a powder storage cavity, the liquid storage cavity and the powder storage cavity are formed in the material storage box, the lower end of the material storage box is connected with a feeding metering unit used for feeding powder raw materials in the powder storage cavity, and the lower end of the material storage box is further fixedly connected with two metering pumps used for conveying liquid raw materials in the liquid storage cavity; a discharging part of the feeding metering unit is connected with a material distributing part; a graded feeding mode is adopted, a powder raw material is divided into two parts, one part is directly added into a stock bin and can be mixed with a liquid raw material, the other part can be conveyed into a Venturi mixing part, mixed with the liquid raw material and then directly conveyed to the lower portion in the liquid raw material, and the two modes are combined, so that a local high-concentration area of powder can be avoided; and particles can be dispersed more efficiently, the long-time stirring requirement is reduced, the energy consumption is reduced, and meanwhile, the long-term abrasion of equipment is reduced.

Description

Technical Field

[0001] The invention relates to the field of dust suppressant production, and more specifically to an automatic adding and metering device for powder raw materials used in the preparation of dust suppressants. Background Art

[0002] Dust suppressants are chemical materials or compounds that can effectively reduce dust by changing the physical or chemical properties of dust particles to reduce dust dispersion. Such products are widely used to suppress dust pollution in road, construction, mining, storage yards, material yards, and other scenes.

[0003] At present, in the production process of dust suppressants, directly adding powder materials into liquid materials is a common feeding method. For example, the prior art (China Utility Model Patent No. CN221471740U) discloses a raw material batching device for the production of dust suppressants. During batching, the powder materials and liquid materials are directly added into the batching tank, and then the powder and liquid materials are stirred by a stirring mechanism to achieve the batching of the dust suppressant.

[0004] Although this feeding method is relatively simple and easy to operate, when the powder material directly enters the liquid, it is easy to form lumps due to surface tension and insufficient wetting, affecting the mixing uniformity. The powder is difficult to disperse quickly in the liquid and is prone to sedimentation, floating or local excessive concentration problems, which increases the difficulty of subsequent stirring or homogenization. Summary of the invention

[0005] In view of the problem that the feeding device existing in the prior art cannot be adjusted according to the feeding needs of steel bars of different length specifications and can only realize the feeding of steel bars of fixed length, the purpose of the present invention is to provide an automatic adding and metering device for powder raw materials for preparing dust suppressants.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] An automatic metering device for adding powder raw materials for preparing dust suppressants, comprising a material storage box, a liquid storage chamber and a powder storage chamber provided inside the material storage box, a feeding metering unit for feeding the powder raw materials in the powder storage chamber connected to the lower end of the material storage box, and two metering pumps for conveying liquid raw materials in the liquid storage chamber fixedly connected to the lower end of the material storage box;

[0008] The discharging part of the feeding metering unit is connected to the distributing part, and the feeding end of the distributing part is connected to the feeding unit;

[0009] The feeding unit comprises a second silo, a cover plate fixedly connected to the upper end of the second silo, a hollow rod body 1 movably connected inside the cover plate and rotatably connected at the lower end to the inner wall of the second silo, a plurality of discharge ports provided inside the first hollow rod body, and a rotary joint 1 connected to the upper end of the cover plate and having an inner tube fixedly inserted in the first hollow rod body;

[0010] The material distribution part includes a hollow material guiding part fixedly connected to the upper end of the cover plate, a silo one fixedly connected to the upper end of the hollow material guiding part, a material discharge chute opened in the silo one and connected to the hollow material guiding part, a material distribution box fixedly connected to the inside of the silo one, a screw feeder two fixedly connected to the outside of the silo one, a Venturi mixing part whose throat is connected to the output end of the screw feeder two, and the discharge end of the material distribution box is connected to the feed end of the screw feeder two, the diffusion end of the Venturi mixing part is connected to the input end of the rotary joint one through a pipeline, and the feed end of the Venturi mixing part is connected to the output end of one of the metering pumps through a pipeline.

[0011] Optionally, the feeding metering unit includes a screw feeder fixedly connected to the lower end of a storage box, a dynamic weighing hopper located below the discharge end of the screw feeder, and a discharge valve fixedly connected to the discharge end of the dynamic weighing hopper. The discharge end of the powder storage chamber is connected to the feed end of the screw feeder, the discharge end of the screw feeder is connected to the feed end of the dynamic weighing hopper, and the discharge end of the discharge valve is connected to the feed end of the silo.

[0012] Optionally, a conical material discharge flange is fixedly connected to the bottom wall of the inner cavity of the silo.

[0013] Optionally, a feeding pump for conveying liquid raw materials is also fixedly connected to the upper end of the material storage box, and a material discharge anti-blocking stirring part is connected to the powder storage cavity.

[0014] Optionally, a motor is fixedly connected to the upper end of the cover plate, and the lower end of the cover plate is rotatably connected to gear 1 and gear 2 meshing with gear 1, the output shaft of the motor passes through the cover plate and is fixedly connected to gear 1, and gear 2 is movably sleeved on the outside of hollow rod body 1.

[0015] Optionally, a powder spraying and lubrication promoting unit is also connected to the lower end of the cover plate, and the powder spraying and lubrication promoting unit includes a connecting rod fixedly connected to the lower end of the cover plate, a disk body fixedly connected to the lower end of the connecting rod, a plurality of hollow rod bodies 2 whose two ends are rotatably connected to the disk body and the cover plate respectively, a plurality of exhaust holes opened inside the hollow rod bodies 2, a plurality of rotary joints 2 fixedly connected to the upper end of the cover plate and whose inner tubes are inserted into the plurality of hollow rod bodies 2, and an atomizing part fixedly connected to the lower end of the cover plate, and the input end of the atomizing part is connected to the output end of another metering pump through a pipeline.

[0016] Optionally, the lower end of the cover plate is also rotatably connected to an inner gear ring meshing with the gear one and a plurality of gears three meshing with the inner gear ring, and the plurality of gears three are respectively fixed to the outside of the plurality of hollow rod bodies two.

[0017] Optionally, a powder disturbance and contact enhancement unit is also connected to the lower end of the disk body, and the powder disturbance and contact enhancement unit includes a turntable rotatably connected to the lower end of the disk body, a slanted top flange integrally formed on the outer surface of the turntable, a plurality of plates slidably connected to the lower end of the turntable, a tooth key 1 opened at the upper end of the plate body, a plurality of rotating seats rotatably connected to the edge of the turntable, a tooth key 2 opened at the lower end of the rotating seat and meshing with the tooth key 1, an air jet fixedly connected to the inside of the rotating seat, a plurality of guide pillars fixedly connected to the lower end of the disk body, a plurality of springs 2 sleeved on the outside of the plurality of guide pillars, and the turntable is movably sleeved on the outside of the hollow rod body 1, one end of the guide pillar is movably inserted into the inside of the plate body, an air pipe joint is fixedly connected to the upper end of the cover plate, an input end of the air jet head is connected to a pipeline, and the other end of the pipeline passes through the disk body and the cover plate and is connected to the air pipe joint.

[0018] Optionally, a centering column is fixedly connected to the inner bottom wall of the second silo, and a centering groove for accommodating the centering column is opened at the bottom of the first hollow rod body, and the first hollow rod body is movably sleeved on the outside of the centering column through the centering groove.

[0019] Optionally, a layered feeding assembly is connected to the upper end of the cover plate, and the layered feeding assembly includes multiple guide rods fixedly connected to the upper end of the cover plate, a sleeve movably sleeved on the outside of the multiple guide rods and fixed to the outer surface of a rotating joint, and multiple springs sleeved on the outside of the multiple guide rods, and the two ends of the multiple springs are respectively connected to the guide rods and the sleeve; a plurality of protrusions are integrally formed at a lower end of the hollow rod body, and a plurality of protrusions are provided with an inclined surface on one side; and an inclined lifting block for cooperating with the inclined surface to lift the protrusions is fixedly connected to the inner bottom wall of the second silo.

[0020] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0021] In the above scheme, a graded feeding method is adopted to divide the powder raw material into two parts, one part of which is directly added to the silo to be mixed with the liquid raw material. With the help of the tension and eddy current on the liquid surface, the powder can be preliminarily dispersed to prevent the powder from sinking directly to the bottom and agglomerating. The other part can be transported into the Venturi mixing section and mixed with the liquid raw material before being directly sent to the bottom of the liquid raw material. Since the powder and the liquid have been fully in contact to form a relatively uniform suspension, it can merge with the liquid in the silo more quickly to further reduce the risk of agglomeration. The combination of the two methods can not only avoid local high concentration areas of powder, but also disperse the particles more efficiently, reduce the need for long-term stirring, reduce energy consumption, and reduce long-term wear of equipment.

[0022] By setting up a powder spraying and wetting promotion unit, when the powder material to be mixed with the liquid raw material directly added into the silo enters the silo, the gas discharged from the exhaust hole can discharge the airflow, and the falling powder is sprayed and dispersed by the airflow, so that the powder particles can be refined and evenly distributed on the liquid surface to prevent the powder from accumulating or agglomerating on the liquid surface. The airflow makes the powder particles fully dispersed to avoid large agglomerations, thereby enhancing the contact area between the powder and the liquid. At the same time, the dispersed powder raw material can also be combined with the atomized liquid raw material, which helps to improve the contact efficiency between the liquid and the powder. The atomized liquid can wrap the powder particles more evenly, promote faster wetting and dispersion, quickly wet the surface of the powder particles, greatly reduce the possibility of agglomeration, and reduce the sedimentation or floating of the powder in the liquid. By pre-wetting the powder raw material in the feeding stage, the powder raw material is already in a relatively dispersed state before formal stirring and mixing, the mixing efficiency is significantly improved, and the stirring time is greatly shortened.

[0023] By setting up a powder disturbance and contact enhancement unit, the airflow discharged from the exhaust hole can blow the powder raw material to diffuse the powder raw material, and then the diffused powder raw material is blown away again through the nozzle at the edge of the disk. Since the nozzle can also be swung and adjusted, the powder is further disturbed by swinging and blowing to form a larger diffusion area. The path of the powder particles in the liquid spray becomes more complicated, increasing the possibility of contact and mixing. Through this multi-level airflow disturbance, the distribution is more uniform, reducing the occurrence of high-concentration or low-concentration areas, and the path length and time of contact between the powder and the atomized liquid are significantly extended, creating conditions for sufficient wetting and preliminary dispersion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the liquid storage chamber, the powder storage chamber and the material feeding anti-blocking stirring part of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the dynamic weighing hopper, the unloading valve and the material distribution part of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the material distribution box and the hollow material guiding part of the present invention;

[0029] Figure 5 It is a cross-sectional view of a silo 1 of the present invention;

[0030] Figure 6 This is a schematic diagram of the upper structure of the cover plate of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the feeding unit, the bump and the inclined surface of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the powder spraying and lubrication promoting unit of the present invention;

[0033] Fig. 9 This is a schematic diagram of the structure of the powder disturbance and contact enhancement unit of the present invention;

[0034] Fig.10 For the present invention Fig. 9 A schematic diagram of the structure enlargement in the middle;

[0035] Fig.11 It is a schematic structural diagram of the centering column and the inclined top block of the present invention.

[0036] [Reference Signs]

[0037] 1. Storage box; 11. Liquid storage chamber; 12. Feeding pump; 13. Powder storage chamber; 14. Discharging anti-blocking stirring section; 2. Screw feeder 1; 3. Metering pump; 4. Dynamic weighing hopper; 5. Discharging valve; 6. Distributing section; 61. Silo 1; 62. Distributing box; 63. Screw feeder 2; 64. Venturi mixing section; 65. Conical discharging flange; 66. Discharging chute; 67. Hollow guide section; 7. Feeding unit; 71. Silo 2; 72. Cover plate; 73. Rotary joint 1; 74. Motor; 75. Hollow rod 1; 76. Gear 1; 77. Gear 2; 78. Discharging port; 79. Centering Column; 8, powder spraying and promoting lubrication unit; 81, rotary joint 2; 82, hollow rod body 2; 83, inner gear ring; 84, gear 3; 85, exhaust hole; 86, atomizing part; 87, disk body; 88, connecting rod; 9, powder disturbance and contact increasing unit; 91, turntable; 92, inclined top flange; 93, plate body; 94, gear key 1; 95, rotating seat; 96, gear key 2; 97, nozzle; 98, air pipe joint; 10, layered feeding assembly; 101, sleeve body; 102, guide rod; 103, spring 1; 104, bump; 105, inclined surface; 106, inclined top block; 15, guide column; 16, spring 2.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0039] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0040] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0041] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0042] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0043] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0044] like Figures 1 to 11As shown, an embodiment of the present invention provides an automatic metering device for adding powder raw materials for preparing dust suppressants, comprising a storage box 1, a liquid storage chamber 11 and a powder storage chamber 13 provided inside the storage box 1, a feeding pump 12 for conveying liquid raw materials is also fixedly connected to the upper end of the storage box 1, and a material unloading anti-blocking stirring part 14 is connected to the powder storage chamber 13. A feeding metering unit for feeding the powder raw materials in the powder storage chamber 13 is connected to the lower end of the storage box 1, and two metering pumps 3 for conveying the liquid raw materials in the liquid storage chamber 11 are also fixedly connected to the lower end of the storage box 1.

[0045] The discharging portion of the feeding metering unit is connected to a distributing portion 6 , and the unloading end of the distributing portion 6 is connected to a feeding unit 7 .

[0046] The feeding unit 7 includes a silo 71, a cover plate 72 fixedly connected to the upper end of the silo 71, a hollow rod body 75 movably connected inside the cover plate 72 and rotatably connected at the lower end to the inner wall of the silo 71, a plurality of discharge ports 78 opened inside the hollow rod body 75, and a rotary joint 73 connected to the upper end of the cover plate 72 and with an inner tube fixedly inserted in the hollow rod body 75.

[0047] The material distribution part 6 comprises a hollow material guide part 67 fixedly connected to the upper end of the cover plate 72, a silo 1 61 fixedly connected to the upper end of the hollow material guide part 67, a material discharge chute 66 opened in the silo 1 61 and connected to the hollow material guide part 67, a material distribution box 62 fixedly connected to the inside of the silo 1 61, a screw feeder 2 63 fixedly connected to the outside of the silo 1 61, a venturi mixing part 64 whose throat is connected to the output end of the screw feeder 2 63, and the material discharge end of the material distribution box 62 is connected to the feed end of the screw feeder 2 63, the diffusion end of the venturi mixing part 64 is connected to the input end of the rotary joint 1 73 through a pipeline, and the feed end of the venturi mixing part is connected to the output end of one of the metering pumps 3 through a pipeline. A conical material discharge flange 65 is also fixedly connected to the bottom wall of the inner cavity of the silo 1 61.

[0048] The feeding metering unit includes a screw feeder 2 fixedly connected to the lower end of the storage box 1, a dynamic weighing hopper 4 located below the discharge end of the screw feeder 2, and a discharge valve 5 fixedly connected to the discharge end of the dynamic weighing hopper 4. The discharge end of the powder storage chamber 13 is connected to the feed end of the screw feeder 2, the discharge end of the screw feeder 2 is connected to the feed end of the dynamic weighing hopper 4, and the discharge end of the discharge valve 5 is connected to the feed end of the silo 61.

[0049] The upper end of the cover plate 72 is fixedly connected to a motor 74, and the lower end of the cover plate 72 is rotatably connected to a gear 1 76 and a gear 2 77 meshing with the gear 1 76. The output shaft of the motor 74 passes through the cover plate 72 and is fixedly connected to the gear 1 76. The gear 2 77 is movably sleeved on the outside of the hollow rod body 1 75.

[0050] By adopting the above technical solution, one of the metering pumps 3 can deliver the liquid raw material in the liquid storage chamber 11 into the Venturi mixing section 64, the liquid raw material is discharged from the Venturi mixing section 64 and enters the rotary joint 73, and enters the hollow rod body 75 from the rotary joint 73, and the liquid raw material is discharged from the discharge port 78 into the silo 71, and the powder raw material in the powder storage chamber 13 is discharged and falls into the screw feeder 2, and the screw feeder 2 can transport the powder raw material and transport the powder raw material into the dynamic weighing hopper 4, which is mainly composed of a hopper, a weighing sensor, a feeding and discharging control device and other structures, and belongs to a mature existing technology. The material weight can be measured in real time. The weight of the powder raw material is weighed by the dynamic weighing hopper 4. When a certain weight is reached, the screw feeder 2 stops working, and the discharge valve 5 is opened to allow the powder raw material in the dynamic weighing hopper 4 to fall into the silo 1 61. When the powder raw material falls into the silo 1 61, part of the powder raw material will fall into the dividing box 62, and the rest of the powder raw material will fall on the conical discharge flange 65 and slide down from the conical discharge flange 65 and fall into the discharge chute 66, enter the hollow guide part 67 from the discharge chute 66, and be discharged from the hollow guide part 67 into the silo 2 71. The powder raw material entering the silo 2 71 can fall into the liquid inside the silo 2 71. On the liquid surface, with the help of the tension and eddy current on the liquid surface during stirring, the powder can be preliminarily dispersed to prevent the powder from sinking directly to the bottom and agglomerating. The part of the powder raw material that falls into the dividing box 62 falls from the dividing box 62 into the screw feeder 2 63. After the screw feeder 2 63 discharges the powder raw material, the powder raw material falls into the throat of the Venturi mixing section 64. When the liquid raw material passes through the Venturi mixing section 64, based on the Venturi effect, the liquid raw material enters the pipeline through the inlet of the Venturi tube under the push of pressure. In the contraction section (throat) of the Venturi tube, the cross-sectional area of ​​the pipeline is reduced, the liquid flow rate is significantly increased, and the local pressure is reduced. At the same time, the low-pressure area of ​​the throat of the Venturi tube will form a negative pressure. The powder raw materials are sucked into the high-speed flowing liquid through negative pressure from the discharge end of the screw feeder 2 63 connected to the venturi tube. After the powder is sucked in, it is mixed with the liquid in the expansion section of the venturi tube. The mixed material is discharged from the discharge port 78 and directly enters the area below the liquid raw material in the silo 2 71. Since the powder and the liquid have been fully in contact to form a relatively uniform suspension, it can merge with the liquid in the silo more quickly when the stirring mechanism is stirring, further reducing the risk of agglomeration. The combination of the two methods can not only avoid local high concentration areas of powder, but also disperse the particles more efficiently, reduce the need for long-term stirring, reduce energy consumption, and reduce long-term wear of equipment.

[0051] like Figure 1 , Figures 6 to 8As shown, the lower end of the cover plate 72 is also connected to a powder spraying and lubrication promoting unit 8, and the powder spraying and lubrication promoting unit 8 includes a connecting rod 88 fixedly connected to the lower end of the cover plate 72, a disk 87 fixedly connected to the lower end of the connecting rod 88, a plurality of hollow rod bodies 82 rotatably connected to the disk 87 and the cover plate 72 at both ends, a plurality of exhaust holes 85 opened inside the hollow rod bodies 82, a plurality of rotary joints 81 fixedly connected to the upper end of the cover plate 72 and with inner tubes inserted into the plurality of hollow rod bodies 82, and an atomizing part 86 fixedly connected to the lower end of the cover plate 72, and the input end of the atomizing part 86 is connected to the output end of another metering pump 3 through a pipeline.

[0052] The lower end of the cover plate 72 is also rotatably connected to an inner gear ring 83 meshing with the gear one 76 and a plurality of gear threes 84 meshing with the inner gear ring 83 , and the plurality of gear threes 84 are respectively fixed to the outside of the plurality of hollow rod bodies two 82 .

[0053] By adopting the above technical solution, when the motor 74 works and drives the gear 1 76 to rotate, the gear 1 76 can drive the gear 2 77, the hollow rod body 1 75, the inner gear ring 83, the multiple gears 3 84 and the multiple hollow rod bodies 2 82 to rotate. The rotary joint 2 81 is externally connected to the air pipe, and the gas enters the hollow rod body 2 82 from the rotary joint 2 81 and is discharged from the exhaust hole 85. Therefore, during the rotation of the hollow rod body 2 82, the air flow is also discharged to the outside, and the powder raw materials discharged from the hollow guide part 67 and falling into the silo 2 71 will be blown away by the air flow during the falling process, and the powder particles are refined and evenly distributed on the liquid surface to prevent the powder from accumulating or agglomerating on the liquid surface. The air flow fully disperses the powder particles to avoid The large agglomeration increases the contact area between the powder and the liquid. At the same time, another metering pump 3 can pump the liquid raw material to the atomizing part 86. The atomizing part 86 (atomizing nozzle) atomizes the liquid raw material and discharges it. The powder raw material dispersed by the airflow can be combined with the atomized liquid raw material, which helps to improve the contact efficiency between the liquid and the powder. The atomized liquid can wrap the powder particles more evenly, promote faster wetting and dispersion, quickly wet the surface of the powder particles, greatly reduce the possibility of agglomeration, and reduce the sedimentation or floating of the powder in the liquid. By pre-wetting the powder raw material in the feeding stage, the powder raw material is already in a relatively dispersed state before formal stirring and mixing, the mixing efficiency is significantly improved, and the stirring time is greatly shortened.

[0054] like Figures 7 to 10As shown, the lower end of the disk body 87 is also connected to a powder disturbance and contact enhancement unit 9, and the powder disturbance and contact enhancement unit 9 includes a turntable 91 rotatably connected to the lower end of the disk body 87, an inclined top flange 92 integrally formed on the outer surface of the turntable 91, a plurality of plates 93 slidably connected to the lower end of the turntable 91, a tooth key 1 94 provided at the upper end of the plate body 93, a plurality of rotating seats 95 rotatably connected to the edge of the turntable 91, a tooth key 2 96 provided at the lower end of the rotating seat 95 and meshing with the tooth key 1 94, and a fixed There is a nozzle 97 inside the rotating seat 95, a plurality of guide pillars 15 fixedly connected to the lower end of the disk body 87, and a plurality of springs 16 sleeved on the outside of the plurality of guide pillars 15, and the turntable 91 is movably sleeved on the outside of the hollow rod body 75, one end of the guide pillar 15 is movably inserted into the inside of the plate body 93, and an air pipe joint 98 is fixedly connected to the upper end of the cover plate 72, and the input end of the nozzle 97 is connected to a pipeline, and the other end of the pipeline passes through the disk body 87 and the cover plate 72 and is connected to the air pipe joint 98.

[0055] By adopting the above technical solution, when the hollow rod body 75 rotates, it can also drive the turntable 91 to rotate at the lower end of the disk body 87. When the turntable 91 rotates, the inclined top flange 92 can push the plate body 93 to slide at the lower end of the disk body 87, so that the spring 16 is compressed. When the plate body 93 moves, the rotating seat 95 is driven to rotate through the cooperation of the tooth key 1 94 and the tooth key 2 96. The rotation of the rotating seat 95 enables the nozzle 97 to rotate, so that the nozzle 97 can swing back and forth. The air pipe joint 98 is also connected to the air pipe, and the gas enters the pipeline from the air pipe joint 98 Finally, it is ejected from the nozzle 97 to scatter the powder raw materials diffused by the exhaust hole 85 again, and the powder is further disturbed by swinging and blowing to form a larger diffusion area. The path of the powder particles in the liquid spray becomes more complicated, which increases the possibility of contact and mixing. Through this multi-level airflow disturbance, the distribution is more uniform, the occurrence of high-concentration or low-concentration areas is reduced, and the path length and time of contact between the powder and the atomized liquid are significantly extended, creating conditions for sufficient wetting and preliminary dispersion.

[0056] like Figures 6 to 8 and Fig.11 As shown, a centering column 79 is fixedly connected to the inner bottom wall of the second silo 71, and a centering groove for accommodating the centering column 79 is opened at the bottom of the hollow rod body 1 75, and the hollow rod body 1 75 is movably sleeved on the outside of the centering column 79 through the centering groove.

[0057] The upper end of the cover plate 72 is connected to a layered feeding assembly 10, and the layered feeding assembly 10 includes a plurality of guide rods 102 fixedly connected to the upper end of the cover plate 72, a sleeve 101 movably sleeved on the outside of the plurality of guide rods 102 and fixedly connected to the outer surface of a rotary joint 73, and a plurality of springs 103 sleeved on the outside of the plurality of guide rods 102, and the two ends of the plurality of springs 103 are respectively connected to the guide rods 102 and the sleeve 101, a plurality of protrusions 104 are integrally formed at the lower end of the hollow rod body 75, and a slope 105 is provided on one side of the plurality of protrusions 104, and an inclined top block 106 for cooperating with the inclined top 105 to lift the protrusion 104 is fixedly connected to the inner bottom wall of the silo 71.

[0058] By adopting the above technical solution, when the motor 74 works to drive the gear 2 77 and the hollow rod body 1 75 to rotate, the protrusion 104 also rotates with the hollow rod body 1 75, and the inclined surface 105 of the protrusion 104 can contact the inclined top block 106. The inclined surface 105 moves on the inclined top block 106, and the inclined top block 106 pushes the protrusion 104 and the hollow rod body 1 75 upward, so that the hollow rod body 1 75 moves upward inside the gear 2 77 and the turntable 91. At the same time, the sleeve 101 and the rotary joint 1 73 also move upward with the hollow rod body 1 75, and the sleeve 101 squeezes the spring 103. When the protrusion 104 is separated from the inclined top block 106, the spring 103 can push the sleeve 101 to move downward, and the sleeve 101 moves downward to drive the rotary joint 1 73. 3 and the hollow rod body 75 move downward and reset. When the hollow rod body 75 moves up and down, the position of the discharge port 78 will change, so that the material (a mixture of powder and liquid) can be discharged to different depths of the liquid. The powder mixture is released to different depths and mixed evenly with different layers of the liquid, which can significantly enhance the overall mixing uniformity of the liquid. Combined with a liquid stirring system (such as a stirring paddle or a vortex device, this application only provides a feeding scheme for the raw materials, and does not show a stirring scheme for the raw materials), the fluid dynamics in the entire liquid container can be further improved, so that each layer of liquid and powder can be more quickly merged. The vibration force generated by the up and down movement of the hollow rod body 75 can also prevent the accumulation of materials and blockage inside the hollow rod body 75.

[0059] The specific workflow of the technical solution provided by the present invention is as follows:

[0060] One of the metering pumps 3 can deliver the liquid raw material in the liquid storage chamber 11 into the Venturi mixing section 64, the liquid raw material is discharged from the Venturi mixing section 64 and enters the rotary joint 73, and enters the hollow rod body 75 from the rotary joint 73, and the liquid raw material is discharged from the discharge port 78 into the silo 71, and the powder raw material in the powder storage chamber 13 is discharged and falls into the screw feeder 2, and the screw feeder 2 can transport the powder raw material and transport the powder raw material into the dynamic weighing hopper 4, and the weight of the powder raw material is weighed by the dynamic weighing hopper 4. When a certain weight is reached, the screw feeder 2 stops working, and the discharge valve 5 is opened to allow the powder raw material in the dynamic weighing hopper 4 to fall into the silo 61. When the powder raw material falls into the silo 61, part of the powder raw material will fall into the dividing box 62, and the rest of the powder raw material will fall into the material distribution box 62. It falls on the conical discharge flange 65, slides down from the conical discharge flange 65 and falls into the discharge chute 66, enters the hollow guide part 67 from the discharge chute 66, and is discharged from the hollow guide part 67 into the silo 71. The powder raw material entering the silo 71 can fall on the liquid surface of the liquid principle inside the silo 71, and the part of the powder raw material falling into the dividing box 62 falls from the dividing box 62 into the screw feeder 63. After the screw feeder 63 discharges the powder raw material, the powder raw material falls into the throat of the Venturi mixing section 64. When the liquid raw material passes through the Venturi mixing section 64, the powder raw material discharged from the discharge end of the screw feeder 63 is sucked into the throat of the Venturi mixing section 64 by negative pressure, and mixed with the liquid in the expansion section of the Venturi tube. The mixed material is discharged from the discharge port 78 and directly enters the area below the liquid raw material in the silo 71.

[0061] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic metering device for adding powder raw materials for preparing dust suppressants, comprising a material storage box, a liquid storage chamber and a powder storage chamber opened inside the material storage box, characterized in that: The lower end of the material storage box is connected to a feeding metering unit for feeding the powder raw material in the powder storage chamber, and the lower end of the material storage box is also fixedly connected to two metering pumps for conveying the liquid raw material in the liquid storage chamber; The discharging part of the feeding metering unit is connected with a distributing part, and the unloading end of the distributing part is connected with a feeding unit; The feeding unit comprises a second silo, a cover plate fixedly connected to the upper end of the second silo, a hollow rod body 1 movably connected inside the cover plate and rotatably connected at the lower end to the inner wall of the second silo, a plurality of discharge ports provided inside the first hollow rod body, and a rotary joint 1 connected to the upper end of the cover plate and having an inner tube fixedly inserted in the first hollow rod body; The material distribution part includes a hollow material guiding part fixedly connected to the upper end of the cover plate, a silo one fixedly connected to the upper end of the hollow material guiding part, a material discharge chute opened in the silo one and connected to the hollow material guiding part, a material distribution box fixedly connected to the inside of the silo one, a screw feeder two fixedly connected to the outside of the silo one, a Venturi mixing part whose throat is connected to the output end of the screw feeder two, and the discharge end of the material distribution box is connected to the feed end of the screw feeder two, the diffusion end of the Venturi mixing part is connected to the input end of the rotary joint one through a pipeline, and the feed end of the Venturi mixing part is connected to the output end of one of the metering pumps through a pipeline.

2. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 1, characterized in that: The feeding metering unit includes a screw feeder 1 fixedly connected to the lower end of a storage box, a dynamic weighing hopper located below the discharge end of the screw feeder 1, and a discharge valve fixedly connected to the discharge end of the dynamic weighing hopper. The discharge end of the powder storage chamber is connected to the feed end of the screw feeder 1, the discharge end of the screw feeder 1 is connected to the feed end of the dynamic weighing hopper, and the discharge end of the discharge valve is connected to the feed end of the silo 1.

3. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 2, characterized in that: A conical material discharge flange is also fixedly connected to the bottom wall of the inner cavity of the silo.

4. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 3, characterized in that: The upper end of the material storage box is also fixedly connected with a feeding pump for conveying liquid raw materials, and the powder storage cavity is connected with a material discharge anti-blocking stirring part.

5. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 4, characterized in that: The upper end of the cover plate is fixedly connected to a motor, and the lower end of the cover plate is rotatably connected to a gear 1 and a gear 2 meshing with the gear 1, the output shaft of the motor passes through the cover plate and is fixedly connected to the gear 1, and the gear 2 is movably sleeved on the outside of the hollow rod body 1.

6. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 5, characterized in that: The lower end of the cover plate is also connected to a powder spraying and lubrication promoting unit, and the powder spraying and lubrication promoting unit includes a connecting rod fixedly connected to the lower end of the cover plate, a disk body fixedly connected to the lower end of the connecting rod, a plurality of hollow rod bodies 2 whose two ends are rotatably connected to the disk body and the cover plate respectively, a plurality of exhaust holes opened inside the hollow rod bodies 2, a plurality of rotary joints 2 fixedly connected to the upper end of the cover plate and whose inner tubes are inserted into the plurality of hollow rod bodies 2, and an atomizing part fixedly connected to the lower end of the cover plate, and the input end of the atomizing part is connected to the output end of another metering pump through a pipeline.

7. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 6, characterized in that: The lower end of the cover plate is also rotatably connected with an inner gear ring meshing with the gear one and a plurality of gears three meshing with the inner gear ring, and the plurality of gears three are respectively fixedly connected to the outside of the plurality of hollow rod bodies two.

8. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 7, characterized in that: The lower end of the disk body is also connected to a powder disturbance and contact enhancement unit, and the powder disturbance and contact enhancement unit includes a turntable rotatably connected to the lower end of the disk body, an inclined top flange integrally formed on the outer surface of the turntable, a plurality of plates slidably connected to the lower end of the turntable, a tooth key 1 provided at the upper end of the plate body, a plurality of rotating seats rotatably connected to the edge of the turntable, a tooth key 2 provided at the lower end of the rotating seat and meshing with the tooth key 1, an air jet fixedly connected to the inside of the rotating seat, a plurality of guide pillars fixedly connected to the lower end of the disk body, a plurality of springs 2 sleeved on the outside of the plurality of guide pillars, and the turntable is movably sleeved on the outside of the hollow rod body 1, one end of the guide pillar is movably inserted into the inside of the plate body, an air pipe joint is fixedly connected to the upper end of the cover plate, an input end of the air jet head is connected to a pipeline, and the other end of the pipeline passes through the disk body and the cover plate and is connected to the air pipe joint.

9. The automatic metering device for adding powder raw materials for preparing dust suppressants according to claim 8, characterized in that: A centering column is fixedly connected to the inner bottom wall of the second silo, and a centering groove for accommodating the centering column is opened at the bottom of the first hollow rod body, and the first hollow rod body is movably sleeved on the outside of the centering column through the centering groove.

10. The automatic adding and metering device for powder raw materials for preparing dust suppressants according to claim 9, characterized in that: The upper end of the cover plate is connected to a layered feeding assembly, and the layered feeding assembly includes multiple guide rods fixedly connected to the upper end of the cover plate, a sleeve body movably sleeved on the outside of the multiple guide rods and fixed to the outer surface of a rotating joint, and multiple springs sleeved on the outside of the multiple guide rods, and the two ends of the multiple springs are respectively connected to the guide rods and the sleeve body; a plurality of protrusions are integrally formed at a lower end of the hollow rod body, and one side of the plurality of protrusions is provided with an inclined surface; the inner bottom wall of the second silo is fixed with an inclined lifting block for cooperating with the inclined surface to lift the protrusion.

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