Barium sulfate pulverizing device with dust collection

Abstract

The utility model relates to barium sulfate processing technical field, concretely is a kind of barium sulfate crushing device with dust collection, including primary crushing mechanism, fine crushing mechanism and nano grinding mechanism, and the primary crushing mechanism, fine crushing mechanism and nano grinding mechanism between are equipped with sealed conveyer belt to be interconnected;The top of the primary crushing mechanism, fine crushing mechanism and nano grinding mechanism is equipped with dust collection mechanism and is interconnected, and all dust collection mechanisms are externally connected with material collecting bin. When using, by setting bag-type dust collector on the top of primary crushing mechanism, fine crushing mechanism and nano grinding mechanism, bag-type dust collector generates negative pressure by fan inside to extract the dust generated in the process of crushing barium sulfate, and the dust is collected into corresponding material collecting bin by air lock to be collected, the effect of avoiding dust overflow is achieved, and the loss of material can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of barium sulfate processing technology, and in particular to a barium sulfate pulverizing device with dust collection. Background Technology

[0002] Barium sulfate is a double contrast agent for X-rays. It is a high-density gastrointestinal contrast agent and can be prepared into suspensions of different proportions for use alone, but it is usually used in conjunction with low-density gas to achieve the purpose of double contrast imaging.

[0003] In the production of barium sulfide, the crude barium sulfide needs to be crushed and ground to meet the required dimensions. This grinding process involves multiple stages to form the final product. During this process, barium sulfide generates a large amount of dust particles, which, if directly released into the air, will cause air pollution.

[0004] Therefore, this application proposes a barium sulfate pulverizing device with dust collection, which is used to collect dust while pulverizing barium sulfide. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a barium sulfate pulverizing device with dust collection function to solve the dust pollution problem mentioned in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a barium sulfate pulverizing device with dust collection, including a primary crushing mechanism, a fine crushing mechanism, and a nano-grinding mechanism, wherein the primary crushing mechanism, the fine crushing mechanism, and the nano-grinding mechanism are connected by a sealed conveyor belt; The top of the primary crushing mechanism, the fine crushing mechanism, and the nano-grinding mechanism are all equipped with a dust collection mechanism connected to them, and all dust collection mechanisms are externally connected to a collection bin. Each of the dust collection mechanisms includes a bag filter, which is equipped with a shut-off valve and an exhaust pipe. The bag filter uses negative pressure to collect dust. The shut-off valve is connected to an external collection bin and controls the on / off state of the material.

[0007] Preferably, the negative pressure value of the bag filter is -0.02 to -0.03 MPa, and the filtration area of ​​the bag filter is 15 m².

[0008] Preferably, the primary crushing mechanism is equipped with a jaw crusher, and the jaw crusher has a crushing gap of 10-15mm.

[0009] Preferably, the fine crushing mechanism includes a fine crushing chamber, an impact crusher is provided in the upper part of the fine crushing chamber, and a first vibrating screen and a second vibrating screen are sequentially provided in the lower part of the impact crusher to divide the interior of the fine crushing chamber into three compartments, and the sealed conveyor belt is located below the second vibrating screen.

[0010] Preferably, both the first vibrating screen and the second vibrating screen include a support frame, a filter screen is provided in the middle of the support frame, a support foot is provided at the bottom edge of the support frame, and an elastic element is sleeved on the outer surface of the support foot; The support frame can be driven by external power to vibrate up and down.

[0011] Preferably, the filter screen in the first vibrating screen is a 1000-mesh filter screen, and the filter screen in the second vibrating screen is a 4000-mesh filter screen.

[0012] Preferably, the fine crushing chamber is provided with a return pipe, one end of which is located between the impact crusher and the first vibrating screen, and the other end of which is connected to the top of the primary crushing mechanism.

[0013] Preferably, the nano-grinding mechanism includes a nano-grinding chamber, and a horizontal ball mill is provided in the upper part of the nano-grinding chamber. The interior of the horizontal ball mill is connected to a sealed conveyor belt. The outside of the nano-grinding chamber is equipped with a drive motor, and the drive shaft of the drive motor is connected to the horizontal ball mill. The lower inner part of the nano-grinding chamber is provided with a discharge section, which extends to the outside of the nano-grinding chamber.

[0014] Preferably, the horizontal ball mill includes a filter cylinder with a mesh diameter of no more than 200 nm. Both ends of the filter cylinder are provided with support baffles to maintain the shape of the filter cylinder. A drive shaft is provided at the axis of one end of the support baffle, and the drive shaft is connected to the output shaft of a drive motor. A hollow support shaft is provided at the axis of the other end of the support baffle. The axis of the hollow support shaft is hollow. The end of the sealed conveyor belt communicates with the interior of the filter cylinder from the axis of the hollow support shaft. The filter cylinder contains several zirconium oxide balls.

[0015] Preferably, the outlet of the discharge section is equipped with an online laser particle size analyzer and an adjustable speed classifier.

[0016] As described above, the barium sulfate pulverizing device with dust collection function of this utility model has the following beneficial effects: 1. This utility model installs baghouse dust collectors at the top of the primary crushing mechanism, the fine crushing mechanism, and the nano-grinding mechanism. The baghouse dust collectors generate negative pressure through their internal fans to extract the dust generated during the crushing of barium sulfate. The dust is then collected in the corresponding collection bins by the airlock, thus preventing dust overflow and reducing material loss.

[0017] 2. This utility model achieves the effect of simultaneous processing of barium sulfate with multiple particle sizes by setting up a primary crushing mechanism, a fine crushing mechanism, and a nano-grinding mechanism, which are interconnected by a sealed conveyor belt. At the same time, a first vibrating screen and a second vibrating screen are set up inside the fine crushing chamber to divide the interior of the fine crushing chamber into three compartments. During fine crushing, the barium sulfate can be separated into coarse slag, 1000-mesh powder, and 4000-mesh powder by the cooperation of the first and second vibrating screens. The coarse slag is then transported to the primary crushing mechanism for further crushing through a return pipe. This achieves the purpose of layering and repeated grinding as needed, thereby improving the crushing efficiency.

[0018] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0019] Figure 1 The diagram shown is a structural schematic of this utility model.

[0020] Figure 2 The diagram shown is a cross-sectional view of the crushing mechanism of this utility model.

[0021] Figure 3 The diagram shown is a structural schematic of the vibrating screen of this utility model.

[0022] Figure 4 The diagram shown is a cross-sectional view of the nano-grinding mechanism of this invention.

[0023] Figure 5 The diagram shown is a structural schematic of the horizontal ball mill of this utility model.

[0024] Component designation explanation: 1. Initial crushing mechanism; 2. Fine crushing mechanism; 21. Fine crushing chamber; 22. Impact crusher; 23. First vibrating screen; 24. Second vibrating screen; 25. Support frame; 26. Filter screen; 27. Support legs; 28. Elastic element; 3. Nano-grinding mechanism; 31. Nano-grinding chamber; 32. Horizontal ball mill; 321. Filter screen; 322. Support baffle; 323. Drive shaft; 324. Hollow support shaft; 33. Drive motor; 34. Discharge section; 4. Sealed conveyor belt; 5. Dust collection mechanism; 51. Baghouse dust collector; 52. Airlock; 53. Exhaust pipe; 6. Return pipe. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0026] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0027] like Figure 1 As shown, this utility model provides a barium sulfate pulverizing device with dust collection, including a primary crushing mechanism 1, a fine crushing mechanism 2, and a nano-grinding mechanism 3 to coarsely crush, finely crush, and nano-grind barium sulfate respectively; a sealed conveyor belt 4 connects the primary crushing mechanism 1, the fine crushing mechanism 2, and the nano-grinding mechanism 3. After coarse crushing by the primary crushing mechanism 1, the barium sulfate falls into the inner bottom of the primary crushing mechanism 1 and is conveyed to the inner top of the fine crushing mechanism 2 by the sealed conveyor belt 4, where it is finely crushed. The finely crushed barium sulfate falls into the inner bottom of the fine crushing mechanism 2 and is conveyed to the inner top of the nano-grinding mechanism 3 by the sealed conveyor belt 4 for final pulverization. The sealed conveyor belt 4 includes an external sealed pipe and an internal conveyor belt, with the conveyor belt wrapped by the sealed pipe to prevent the barium sulfate from being exposed to air during transport. To ensure the dryness of the barium sulfate, a hot air insulation layer is provided on the conveyor belt to control the temperature at 50-60℃, preventing the material from becoming damp and clumping.

[0028] The top of the primary crushing mechanism 1, the fine crushing mechanism 2, and the nano-grinding mechanism 3 are all equipped with a dust collection mechanism 5 connected to them. During the crushing of barium sulfate, the dust collection mechanism 5 collects the powder generated during the crushing process to prevent the powder from overflowing into the air and causing pollution. All dust collection mechanisms 5 are connected to a collection bin to collect the dust captured by the dust collection mechanism 5. The collected dust is then used for further processing to reduce material loss.

[0029] Specifically, each dust collection unit 5 includes a bag filter 51. The bag filter 51 is equipped with a shut-off fan 52 and an exhaust pipe 53. The bag filter 51 generates negative pressure through a fan to collect dust and isolates the dust through its internal filter. The shut-off fan 52 is connected to an external collection bin and controls the opening and closing of the dust. The isolated dust is finally transported to the collection bin for collection through the shut-off fan 52, while the filtered gas is discharged into the air through the exhaust pipe 53.

[0030] It should be noted that the negative pressure value of the bag filter 51 of this utility model is -0.02 to -0.03 MPa, which can prevent larger particles of barium sulfate from being adsorbed into the interior of the bag filter 51 due to the negative pressure while collecting dust. The filter area of ​​the bag filter 51 is 15㎡. After collecting dust through the above structure, the dust removal efficiency is ≥99.5% and the dust recovery rate is ≥98%, which effectively improves environmental protection and reduces material loss.

[0031] It is worth mentioning that the primary crushing mechanism 1 of this utility model is equipped with a jaw crusher, which has a simple structure and can efficiently crush large particles of barium sulfate; the crushing gap of the jaw crusher is 10-15mm, which can be adapted to 10-20 mesh barite after hopping.

[0032] like Figure 2 As shown in some embodiments, the fine crushing mechanism 2 of this utility model includes a fine crushing chamber 21 for concentrating the coarsely crushed barium sulfate; an impact crusher 22 is provided in the upper part of the fine crushing chamber 21, the rotation speed of the impact crusher 22 is set to 3000-3500 r / min, and it is used to produce 1000 mesh coarse powder; a first vibrating screen 23 and a second vibrating screen 24 are sequentially provided in the lower part of the impact crusher 22 to divide the interior of the fine crushing chamber 21 into three compartments. The barium sulfate crushed by the impact crusher 22 is blocked and screened by the first vibrating screen 23 and the second vibrating screen 24 in sequence to achieve the separation of coarse particles, fine particles and ultrafine particles. A sealed conveyor belt 4 is provided below the second vibrating screen 24 to transport the ultrafine barium sulfate particles to the nano-grinding mechanism 3 for final crushing.

[0033] like Figure 3As shown in some embodiments, the first vibrating screen 23 and the second vibrating screen 24 of this utility model have the same structure, both including a support frame 25. A filter screen 26 is provided in the middle of the support frame 25 for screening barium sulfate particles. A support foot 27 is provided at the bottom edge of the support frame 25. An elastic element 28 is sleeved on the outer surface of the support foot 27. The support foot 27 is connected to the support body inside the fine crushing chamber 21 to limit the support frame 25 and to provide support force to the support frame 25 through the elastic element 28. The support frame 25 can be driven by external power such as a motor or magnetic drive and shakes up and down under the force of the elastic element 28 to achieve efficient screening. Its specific working principle is the same as that of existing vibrating screens.

[0034] It should be noted that in some embodiments, the filter screen 26 in the first vibrating screen 23 of this invention is a 1000-mesh filter screen, and the filter screen 26 in the second vibrating screen 24 is a 4000-mesh filter screen, thereby achieving the upper and lower stratification of barium sulfate particles.

[0035] like Figure 1 As shown, in some embodiments, the fine crushing chamber 21 of this utility model is provided with a return pipe 6. One end of the return pipe 6 is located between the impact crusher 22 and the first vibrating screen 23, and the other end of the return pipe 6 is connected to the top of the primary crushing mechanism 1. The coarse residue left after being screened by the first vibrating screen 23 will be transported from the fine crushing chamber 21 to the primary crushing mechanism 1 for further crushing under the action of pneumatic, auger and other driving equipment, so as to achieve the effect of cyclic crushing to improve the quality and crushing efficiency of barium sulfate particles.

[0036] like Figure 4 As shown, in some embodiments, the nano-grinding mechanism 3 of this utility model includes a nano-grinding chamber 31, and a horizontal ball mill 32 is provided in the upper part of the nano-grinding chamber 31. The interior of the horizontal ball mill 32 is connected to the sealed conveyor belt 4. The barium sulfate crushed by the fine crushing mechanism 2 is transported to the interior of the horizontal ball mill 32 by the sealed conveyor belt 4, and the barium sulfate is ground at the nanoscale by the horizontal ball mill 32. The barium sulfate after nanoscale grinding falls into the bottom of the nano-grinding chamber 31 through the holes on the surface of the horizontal ball mill 32. A drive motor 33 is provided outside the nano-grinding chamber 31. The drive shaft of the drive motor 33 is connected to the horizontal ball mill 32. The drive motor 33 is used to drive the horizontal ball mill 32 to rotate, thereby causing the grinding balls in the horizontal ball mill 32 to rub against the barium sulfate. A discharge section 34 is provided at the lower inner part of the nano-grinding chamber 31. The discharge section 34 extends to the outside of the nano-grinding chamber 31, and the final barium sulfate product is transported to the outside of the equipment and collected through the discharge section 34.

[0037] like Figure 5As shown, in some embodiments, the horizontal ball mill 32 of this utility model includes a filter cylinder 321. The mesh diameter of the filter cylinder 321 is no greater than 200 nm. Barium sulfate particles with a particle diameter of less than 200 nm can fall into the bottom of the nano-grinding chamber 31 through the filter cylinder 321 and be collected. Both ends of the filter cylinder 321 are provided with support baffles 322 to maintain the shape of the filter cylinder 321. A drive shaft 323 is provided on the axis of one end of the support baffle 322. The drive shaft 323 is connected to the drive motor 3. The output shaft of 3 is connected to drive the filter cylinder 321 through the transmission shaft 323, so that the filter cylinder 321 rotates and the grinding balls inside it rub against the barium sulfate. The other end of the support baffle 322 has a hollow support shaft 324. The core of the hollow support shaft 324 is hollow. The end of the sealed conveyor belt 4 is connected to the inside of the filter cylinder 321 from the core of the hollow support shaft 324, so that the barium sulfate in the fine crushing mechanism 2 can be transported to the inside of the filter cylinder 321 through the sealed conveyor belt 4. The filter cylinder 321 has several zirconium oxide balls inside, with a ball-to-material ratio of 3:1. The grinding time is generally 2 to 3 hours, and it is used to produce nano-barium sulfate with a wavelength of less than 200 nm.

[0038] It should be noted that the outlet of the discharge section 34 of this utility model is equipped with a laser particle size online detector and an adjustable speed classifying wheel. The laser particle size online detector is used to monitor the particle size in real time. When the particle size is >200nm, the material is returned to the horizontal ball mill 32 for secondary grinding through the circulation pipe by pneumatic or auger conveying. The speed of the classifying wheel is set at 5000-8000r / min to classify the final product into layers and to facilitate the laser particle size online detector to monitor the particle size of the product.

[0039] In summary, the barium sulfate pulverizing device with dust collection of this utility model, by installing bag dust collectors 51 at the top of the primary crushing mechanism 1, the fine crushing mechanism 2 and the nano-grinding mechanism 3, and by generating negative pressure through the internal fan of the bag dust collector 51 to extract the dust generated during the pulverization of barium sulfate, and collecting the dust into the corresponding collection bin through the airlock 52, achieves the effect of avoiding dust overflow and reducing material loss.

[0040] This invention achieves simultaneous processing of barium sulfate with multiple particle sizes by separately setting up a primary crushing mechanism 1, a fine crushing mechanism 2, and a nano-grinding mechanism 3, and interconnecting them through a sealed conveyor belt 4. Simultaneously, a first vibrating screen 23 and a second vibrating screen 24 are respectively installed inside the fine crushing chamber 21, dividing the interior of the chamber 21 into three compartments. During fine crushing, the barium sulfate can be separated into coarse slag, 1000-mesh powder, and 4000-mesh powder through the cooperation of the first vibrating screen 23 and the second vibrating screen 24. The coarse slag is then transported to the primary crushing mechanism 1 through the return pipe 6 for further crushing, achieving the purpose of layering and repeated grinding as needed, thus improving the crushing efficiency.

[0041] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0042] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A barium sulfate pulverizing device with dust collection function, characterized in that, It includes a primary crushing mechanism (1), a fine crushing mechanism (2) and a nano-grinding mechanism (3), and a sealed conveyor belt (4) is provided between the primary crushing mechanism (1), the fine crushing mechanism (2) and the nano-grinding mechanism (3) for communication; The top of the primary crushing mechanism (1), the fine crushing mechanism (2) and the nano-grinding mechanism (3) are all equipped with a dust collection mechanism (5) connected to them, and all dust collection mechanisms (5) are connected to a material collection bin. Each of the dust collection mechanisms (5) includes a bag filter (51), which is equipped with a shut-off valve (52) and an exhaust pipe (53). The bag filter (51) uses negative pressure to collect dust. The shut-off valve (52) is connected to an external collection bin and controls the opening and closing of the dust.

2. The barium sulfate pulverizing apparatus with dust collection according to claim 1, characterized by: The negative pressure value of the bag filter (51) is -0.02 to -0.03 MPa, and the filtration area of ​​the bag filter (51) is 15 m².

3. The barite pulverizing apparatus with dust collection according to claim 1, wherein: The primary crushing mechanism (1) is equipped with a jaw crusher with a crushing gap of 10-15mm.

4. The barium sulfate pulverizing apparatus with dust collection according to claim 1, characterized by: The fine crushing mechanism (2) includes a fine crushing chamber (21), an impact crusher (22) is provided in the upper part of the fine crushing chamber (21), and a first vibrating screen (23) and a second vibrating screen (24) are provided in sequence in the lower part of the impact crusher (22) to divide the interior of the fine crushing chamber (21) into three compartments. The sealed conveyor belt (4) is located below the second vibrating screen (24).

5. The barium sulfate pulverizing device with dust collection according to claim 4, characterized in that: The first vibrating screen (23) and the second vibrating screen (24) both include a support frame (25), a filter screen (26) is provided in the middle of the support frame (25), a support foot (27) is provided at the bottom edge of the support frame (25), and an elastic element (28) is sleeved on the outer surface of the support foot (27). The support frame (25) can be driven by external power to shake up and down.

6. The barium sulfate pulverizing apparatus with dust collection according to claim 5, characterized by: The filter screen (26) in the first vibrating screen (23) is a 1000-mesh filter screen, and the filter screen (26) in the second vibrating screen (24) is a 4000-mesh filter screen.

7. The barite pulverizing apparatus with dust collection according to claim 6, characterized in that: The fine crushing chamber (21) is provided with a return pipe (6), one end of which is located between the impact crusher (22) and the first vibrating screen (23), and the other end of which is connected to the top of the primary crushing mechanism (1).

8. The barium sulfate pulverizing apparatus with dust collection according to claim 1, characterized by: The nano-grinding mechanism (3) includes a nano-grinding chamber (31), and a horizontal ball mill (32) is provided in the upper part of the nano-grinding chamber (31). The interior of the horizontal ball mill (32) is connected to the sealed conveyor belt (4). The outside of the nano-grinding chamber (31) is provided with a drive motor (33), and the drive shaft of the drive motor (33) is connected to the horizontal ball mill (32). The nano-grinding chamber (31) has a discharge section (34) located at its lower inner part, and the discharge section (34) extends to the outside of the nano-grinding chamber (31).

9. The barite pulverizing apparatus with dust collection according to claim 8, characterized in that: The horizontal ball mill (32) includes a filter cylinder (321) with a mesh diameter of no more than 200 nm. Both ends of the filter cylinder (321) are provided with support baffles (322) to maintain the shape of the filter cylinder (321). A drive shaft (323) is provided at the axis of one end of the support baffle (322), and the drive shaft (323) is connected to the output shaft of the drive motor (33). A hollow support shaft (324) is provided at the axis of the other end of the support baffle (322), and the axis of the hollow support shaft (324) is hollow. The end of the sealed conveyor belt (4) is connected to the interior of the filter cylinder (321) from the axis of the hollow support shaft (324). The filter cylinder (321) has several zirconium oxide balls inside.

10. The barium sulfate comminution device with dust collection of claim 9, wherein: The outlet of the discharge section (34) is equipped with an online laser particle size analyzer and an adjustable speed classifier.

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