CN215140544U - Ball mill discharge screening plant in soda is made in circulation in pit - Google Patents
Ball mill discharge screening plant in soda is made in circulation in pit Download PDFInfo
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- CN215140544U CN215140544U CN202121542995.6U CN202121542995U CN215140544U CN 215140544 U CN215140544 U CN 215140544U CN 202121542995 U CN202121542995 U CN 202121542995U CN 215140544 U CN215140544 U CN 215140544U
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Abstract
The utility model discloses a ball mill ejection of compact screening plant in soda is made in circulation in pit, it includes the rotary screen that is fixed in the ball mill discharge gate of ball mill, cover the protection casing of rotary screen, be located the buffer tank of rotary screen and protection casing below, be located the long-pending material device of rotary screen exit end front lower place and buffer tank top, wherein, be equipped with the spiral that extends to the rotary screen exit end from the rotary screen entry end in the rotary screen, the upper portion of buffer tank is equipped with opening and protection casing bottom intercommunication, be equipped with first sieve on the opening, the thick liquid can flow into inside the buffer tank through the sieve after the ball mill grinds, the rotary screen exit end exposes from the protection casing, through second sieve intercommunication between the top of long-pending material device bottom and buffer tank. The utility model discloses a ball mill ejection of compact screening plant can effectual solution return stone and return sand and grind the back and appear large granule impurity or the jam of steel ball to the pump body and epilogue pipeline.
Description
Technical Field
The utility model relates to a ball mill ejection of compact screening plant among system soda under pit circulates.
Background
In soda production enterprises, underground circulation soda production is mainly a production process for producing soda by an ammonia-soda process, but in the prior art, when the soda is produced by the ammonia-soda process, return sand is inevitably generated in a limestone calcining process, and the applicant company is already put into a ball mill to grind and pulp waste sand. In the normal production process of the ball mill, the reduction of the processing capacity of the ball mill can be caused to cause that micro sand return particles with the size of more than 10mm appear at the discharge port of the ball mill, and even after the discharge grid plate of the ball mill is damaged, impurities such as large-particle hard steel balls enter the buffer barrel along with slurry. And large granular substances enter the buffer barrel, so that a stirrer of the buffer barrel is damaged, a pump and a pipeline are extremely easy to block, and serious inconvenience is brought to subsequent work. Also can discover that the ball mill can't be normal after equipment blocks up or can't use because of large granule impurity gets into the buffering bucket, not only increases the maintenance cost of equipment, still brings serious unfavorable for the subsequent handling.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving above technical problem, provide a ball mill ejection of compact screening plant among system soda circulates in the pit, can effectual solution return stone return sand and appear large granule impurity or the jam of steel ball to the pump body and epilogue pipeline after grinding.
This device is mainly including increasing a screen frame at the ball mill discharge gate, through utilizing ball mill self moving characteristics to go out the installation at the ball mill discharge gate and change the sieve, and the screen frame adopts the screw fixation at the ball mill discharge gate, can be along with the ball mill in normal operation in-process synchronous working, and the screen frame is installed to buffering bucket top, and the thick liquid directly gets into in the buffering bucket after the screening of being convenient for.
The utility model adopts the technical scheme as follows:
a discharge screening device of a ball mill in underground circulation soda production comprises a rotary screen (cylindrical screen) fixed at a discharge port of the ball mill, a protective cover covering the rotary screen, a buffer barrel positioned below the rotary screen and the protective cover, and a material accumulation device positioned at the front lower part of an outlet end of the rotary screen and above the buffer barrel,
wherein, be equipped with in the rotary screen and extend to the spiral of rotary screen exit end from rotary screen entry end (the one end that is close to the ball mill exit end), the direction of rotation of spiral (spiral is left-handed or dextrorotation, will be decided according to ball mill direction of rotation) guarantees that the spiral can push out the ball mill sieve body with not ground solid particle.
The upper part of the buffer barrel is provided with an opening communicated with the bottom of the protective cover, the opening is provided with a first sieve plate, the slurry ground by the ball mill can flow into the buffer barrel through the sieve plate,
the rotary screen outlet end is exposed from the protective cover, the bottom of the material accumulation device is communicated with the top of the buffer barrel through a second sieve plate, and large solid particles are pushed to the rotary screen outlet through the spiral in the rotary screen and fall into the material accumulation device.
Further, the length of the upper opening of the buffer barrel is 20-60cm, preferably 25-50cm, and more preferably about 30 cm; the width is 15-50cm, preferably 20-40cm, for example 20 cm.
Furthermore, one side of the outlet of the rotary screen is in a truncated cone shape, the diameter of the outlet is gradually reduced towards the outlet end, and a baffle is arranged at the periphery of the discharge port end of the rotary screen body surrounding the whole rotary screen, so that the liquid is prevented from flowing down through the conical surface and then being thrown out along the discharge port to cause environmental pollution.
Further, the baffle is located inside the shield at a distance of 1-10mm, preferably 3-7mm, more preferably 4-5mm from the shield. The height of the baffle is greater than the distance between the shield and the outlet end of the rotary screen (usually less than 10mm, for example 5-10mm), generally 10-20mm, the thickness can be 2-8mm, and the material can be metal such as steel or plastic.
The diameter of the rotary screen is generally slightly smaller than that of a discharge port of the ball mill, the diameter of an outlet end (the top end of a truncated cone) of the rotary screen is generally 20-30cm, the diameter of the protective cover can be 20-100cm larger than that of the rotary screen, one side of the protective cover is provided with an opening for the outlet of the ball mill to penetrate through, and the other side of the protective cover is provided with an opening for the outlet end of the rotary screen to expose.
Further, the rotary screen body is fixed on the outlet end of the ball mill through a bolt, the screen body is made of stainless steel, the screen body is not too thick in order to ensure that liquid can smoothly flow out, holes with the diameter of 5-10mm, preferably 6, 7, 8 and 9mm, and preferably about 8mm are formed in the screen body, and the screen body is preferably made of 304 stainless steel in order to prevent abrasion and corrosion of the screen body, wherein the screen body is generally selected from 1-6mm, preferably 2-4mm and further 3 mm. The aperture of the second screen plate is generally the same as the aperture of the screen body of the rotary screen. For example, a first fixing plate is arranged on the outer wall of one end of the screen body of the rotary screen, a second fixing plate matched with the first fixing plate is arranged at the outlet end of the ball mill, holes for bolts to pass through are formed in the first fixing plate and the second fixing plate, and the bolts are fixed by nuts after passing through the holes in the first fixing plate and the second fixing plate.
Preferably, the spiral is welded inside the sieve body of the rotary sieve, the direction of the spiral is determined according to the turning direction of the ball mill, overflow ports are arranged on the spiral at intervals, the spiral is made of flat iron with the length of 4-6cm, preferably 5cm, the overflow ports with the length of 8-12cm x 1.5-3cm, preferably 10 x 2cm are arranged on the spiral, and the distance between the two overflow ports along the spiral is 20-40cm, preferably about 30 cm. When the rotary screen body works, solid particles are pushed to the outlet of the rotary screen body through the screen body in a spiral mode, but the solid particles contain partial moisture, the moisture is poured back to the inside of the screen body through the overflow port formed in the spiral mode, the moisture flows into the buffer barrel through the opening holes in the screen body, and the solid particles screened out by the screen body are prevented from containing a large amount of moisture and polluting the environment.
The protection casing covers the whole screen frame that will change the sieve, and liquid throws away when avoiding the screen frame to rotate and pollutes the sanitation of surrounding environment, simultaneously at screen frame discharge gate end preparation baffle, in an embodiment, the baffle is 5mm apart from the protection casing, because the screen frame discharge gate is the toper, avoids liquid to throw away along the discharge gate after flowing down through the conical surface and leads to the pollution of environment.
The screen frame below and protection casing internally mounted have first sieve, and first sieve aperture is generally selected to be 1-5cm, preferred 2-4cm, further about 3cm, and inside the guarantee ball mill ground back thick liquid can flow into the buffer tank through first sieve, and first sieve mainly ensures that the screen frame damages the back and in time discovers and leads to buffer tank stirring to damage, and inside first sieve inserted the protection casing along the buffer tank plane simultaneously, makes things convenient for first sieve to take out the clearance at any time. The buffer vessel may be cylindrical and may have a height of 1.5-2.5 meters, for example about 1.8 meters, and a diameter of 1.5-2.5 meters, for example about 2 meters.
The material accumulating device is arranged outside the discharge port of the screen body and the protective cover, the material accumulating device can be a square material accumulating box, the length, the width and the height can be 15-50cm x 10-30cm, a second screen plate which is preferably the same as the aperture of the screen body is arranged at the bottom of the material accumulating device, solid particles screened by the screen body are enabled to be aired again, the cleaning is convenient, the rotating speed of the ball mill can be adjusted according to the size and the number of the solid particles of the second screen plate, and the damage condition of the discharging device in the ball mill (such as the large-particle solid material is discharged for a long time, and the damage of the discharging grid plate of the ball mill is explained).
During operation, the useless sand of solid that produces in the system alkali process becomes the thick liquid after grinding through the ball mill, the large granule coke that can't grind, or ball mill throughput reduces and leads to the ball mill discharge gate to appear the small sand return granule more than 10mm, damage the back and lead to big solid particle such as the hard steel ball of large granule to sieve through the screen frame even at ball mill ejection of compact comb board, big solid particle pushes away to long-pending material device through the inside spiral of screen frame, the thick liquid flows into to inside the buffer bin through the screen hole on the screen frame.
Partial moisture content that solid particle smugglied secretly will have the overflow mouth to fall back to the screen frame inside through the spiral, in the trompil inflow buffer tank above the screen frame, avoid the solid particle that the screen frame sieve was divided to contain a large amount of moisture content and pollute sanitation.
The utility model has the advantages that:
(1) the utility model discloses utilize equipment self moving characteristics to go out the installation at the ball mill discharge gate and change the sieve, turn and adopt the bolt to install to ball mill discharge gate end, can avoid dropping into screening equipment and increase power consumption and maintenance cost along with the ball mill in normal operation in-process synchronous operation.
(2) The utility model discloses a bolt structure has not only made things convenient for the clearance of screen frame for follow-up production process, also is convenient for simultaneously to the transformation upgrade of ball-milling existing equipment.
(3) The protective cover is manufactured outside the screen body to cover the screen body, firstly, the screen body is used for the safety function, the screen body is rotated reversely and positively to hurt people, and secondly, the screen body is used for preventing the rotating screen from splashing slurry.
(4) The utility model discloses a spiral area is gone up and is opened the chute, avoids the solid slurry that can smuggle secretly to get rid of to around through the discharge gate, and the polluted environment health.
(5) And the filtering sieve with the same aperture and the same hole distance as the rotary sieve is paved on the hole of the buffer barrel, so that the impurities screened by the sieve body can be directly placed above the buffer barrel, not only can the moisture carried by the impurities be dried, but also the screened impurities are prevented from polluting the surrounding environmental sanitation, and whether the ball mill normally works or not can be checked through the screened impurities more clearly.
Drawings
FIG. 1 is a schematic structural diagram of a discharge screening device of a ball mill;
FIG. 2 is an enlarged view of a portion II of FIG. 1;
FIG. 3 is an enlarged view of a portion I of FIG. 1 (the structure of the overflow launder between the spiral belt and the screen body);
FIG. 4 is an enlarged view of a portion of III in FIG. 2.
In the figure: 1, a ball mill; 2, discharging a material outlet of the ball mill; 3, rotating the screen; 4, a protective cover; 5, spiral; 5-1 overflow port; 6 a first screen deck; 7 material accumulation device (material accumulation groove); 8 buffer barrels, 9 baffles and 10 second sieve plates.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in figures 1-4, the utility model provides a ball mill discharging screening device in the underground circulation soda production, which comprises a rotary screen (cylindrical screen) 3 fixed at the ball mill discharging port 2 of the ball mill 1, a protective cover 4 covering the rotary screen, a buffer barrel 8 positioned below the rotary screen and the protective cover, a material accumulating device 7 positioned in front of and below the outlet end of the rotary screen and above the buffer barrel,
wherein, be equipped with in the rotary screen 3 and extend to the spiral 5 of rotary screen exit end from rotary screen entry end (the one end that is close to the ball mill exit end), the direction of rotation of spiral 5 (spiral is left-handed or dextrorotation, will be decided according to ball mill direction of rotation) guarantees that the spiral can push out the ball mill sieve body with not ground solid particle.
The upper part of the buffer barrel 8 is provided with an opening communicated with the bottom of the protective cover, the opening is provided with a first sieve plate 6, the slurry ground by the ball mill can flow into the buffer barrel 8 through the sieve plate,
the rotary screen outlet end is exposed from the protective cover 4, the bottom of the material accumulation device 7 is communicated with the top of the buffer barrel 8 through a second screen plate 10, and large solid particles are pushed to the rotary screen outlet through the spiral in the rotary screen and fall into the material accumulation device 7.
The size of the upper opening of the buffer barrel can be as follows: a length of 20-60cm, preferably 25-50cm, more preferably about 30 cm; the width is 15-50cm, preferably 20-40cm, for example 20 cm.
In the preferred embodiment, one side of the outlet of the rotary screen is in a truncated cone shape, the diameter of the outlet is gradually reduced towards the outlet end, and a baffle plate 9 is arranged at the discharge port end of the rotary screen body and surrounds the periphery of the whole rotary screen, so that the liquid is prevented from flowing down through the conical surface and then being thrown out along the discharge port to cause environmental pollution.
In a further embodiment, the baffle 9 is located inside the hood 4 at a distance of 1-10mm, preferably 3-7mm, more preferably 4-5mm from the hood 4. The height of the baffle 9 is greater than the distance between the shield 4 and the outlet end of the rotary screen (typically less than 10mm, for example 5-10mm), typically 10-20mm, and may be 2-8mm thick, and the material may be metal such as steel or plastic.
The diameter of the rotary screen 3 is generally slightly smaller than that of a discharge port of the ball mill, the diameter of an outlet end (the top end of a truncated cone) is generally 20-30cm, the diameter of the protective cover can be 20-100cm larger than that of the rotary screen, one side of the protective cover is provided with an opening for the outlet of the ball mill to pass through, and the other side of the protective cover is provided with an opening for the outlet end of the rotary screen to expose.
In one embodiment, the screen body of the rotary screen 3 is fixed on the outlet end of the ball mill by bolts, the screen body is made of stainless steel, in order to ensure that liquid can smoothly flow out, the screen body is not too thick, generally 1-6mm, preferably 2-4mm, and further 3mm, holes with the diameter of 5-10mm, preferably 6, 7, 8, 9mm, and preferably about 8mm are arranged on the screen body, and in order to prevent the wear and corrosion of the screen body, the screen body is preferably made of 304 stainless steel. The aperture of the second screen plate is generally the same as the aperture of the screen body of the rotary screen. For example, a first fixing plate is arranged on the outer wall of one end of the screen body of the rotary screen, a second fixing plate matched with the first fixing plate is arranged at the outlet end of the ball mill, holes for bolts to pass through are formed in the first fixing plate and the second fixing plate, and the bolts are fixed by nuts after passing through the holes in the first fixing plate and the second fixing plate.
In a preferred embodiment, the spiral 5 is welded inside the rotary screen body, the direction of the spiral is determined according to the turning direction of the ball mill 1, overflow ports are arranged on the spiral at intervals, the spiral is made of 5cm flat iron, 10 x 2cm overflow ports 5-1 are arranged on the spiral, for example, one side of the spiral close to the wall of the rotary screen body is provided with the two overflow ports, the distance between the two overflow ports along the spiral is 30cm, when the rotary screen body works, solid particles are pushed to the outlet of the rotary screen body through the spiral of the screen body, but the solid particles contain partial moisture, the moisture is poured back to the inside of the screen body through the overflow ports arranged on the spiral, and the moisture flows into the buffer barrel through the openings on the screen body, so that the solid particles screened by the screen body are prevented from containing a large amount of moisture to pollute the environment.
The protection casing 4 covers the whole screen frame that will change the sieve, and liquid throws away when avoiding the screen frame to rotate and pollutes the sanitation of surrounding environment, simultaneously at screen frame discharge gate end preparation baffle, in an embodiment, the baffle is 5mm apart from the protection casing, because the screen frame discharge gate is the toper, avoids liquid to flow down the back through the conical surface and throws away along the discharge gate and lead to the pollution of environment.
The screen frame below and protection casing internally mounted have first sieve 6, 6 apertures of first sieve are generally selected to be 1-5cm, preferred 2-4cm, further about 3cm, guarantee that the thick liquid can flow into inside the buffer tank through first sieve 6 after the ball mill grinds, first sieve 6 mainly guarantee not in time discover and lead to buffer tank stirring to damage behind the screen frame damage, inside first sieve 6 inserted the protection casing along the buffer tank plane simultaneously, make things convenient for first sieve 6 to take out the clearance at any time. The buffer vessel 8 may be cylindrical and may have a height of 1.5-2.5 meters, e.g. about 1.8 meters, and a diameter of 1.5-2.5 meters, e.g. about 2 meters.
The material accumulating device 7 is arranged outside the screen body discharge port and the protective cover, the material accumulating device 7 can be a square material accumulating box, the length, the width and the height can be 15-50cm x 10-30cm, a second screen plate which is preferably the same as the aperture of the screen body is arranged at the bottom of the material accumulating device, solid particles screened by the screen body are enabled to be aired again, the cleaning is convenient, the rotating speed of the ball mill can be adjusted according to the size and the number of the solid particles of the second screen plate, and the damage condition of the discharging device in the ball mill is observed (for example, large solid material is discharged for a long time, and the damage of the discharging grid plate of the ball mill is explained).
Example 1
The useless sand of solid that produces in the system alkali process becomes the thick liquid after grinding through ball mill 1, the large granule coke that can't grind, or ball mill throughput reduces and leads to ball mill discharge gate 2 to appear the small sand return granule more than 10mm, damage the back and lead to big solid particles such as the hard steel ball of large granule to sieve through the screen frame even at ball mill discharge comb board, big solid particle pushes away to long-pending material device 7 through the inside spiral of screen frame, the thick liquid flows into to buffer bin 8 inside through the screen hole on the screen frame.
Part of water content carried by the solid particles is poured back to the inside of the screen body through the overflow port formed in the spiral mode, and flows into the buffer barrel 8 through the opening hole formed in the upper portion of the screen body, so that the solid particles screened out by the screen body are prevented from containing a large amount of water content and polluting the environment.
While specific embodiments of the present invention have been described in detail, it should be understood that the above description is intended for purposes of illustration only and is not intended to limit the scope of the present invention in any way. Numerous changes and substitutions may be made by those skilled in the art without departing from the spirit and scope of the invention, and all such changes and substitutions are intended to be within the scope of the claims of the invention.
Claims (10)
1. A discharge screening device of a ball mill in underground circulating soda production is characterized by comprising a rotary screen fixed at a discharge port of the ball mill, a protective cover covering the rotary screen, a buffer barrel positioned below the rotary screen and the protective cover, and a material accumulation device positioned in front of and below an outlet end of the rotary screen and above the buffer barrel,
wherein, a spiral extending from the inlet end of the rotary screen to the outlet end of the rotary screen is arranged in the rotary screen, the rotation direction of the spiral ensures that the spiral can push unground solid particles out of the screen body of the ball mill,
the upper part of the buffer barrel is provided with an opening communicated with the bottom of the protective cover, the opening is provided with a first sieve plate, the slurry ground by the ball mill can flow into the buffer barrel through the sieve plate,
the rotary screen outlet end is exposed from the protective cover, the bottom of the material accumulation device is communicated with the top of the buffer barrel through a second sieve plate, and large solid particles are pushed to the rotary screen outlet through the spiral in the rotary screen and fall into the material accumulation device.
2. A ball mill discharge screening apparatus as claimed in claim 1, wherein the opening at the upper portion of the buffer barrel is 20-60cm in length and 15-50cm in width.
3. A discharge screening device for a ball mill according to claim 1, characterized in that one side of the outlet of the rotary screen is in a truncated cone shape, the diameter of the outlet is gradually reduced towards the outlet end, and a baffle plate for preventing liquid from flowing down through the cone surface and then being thrown out along the discharge port to cause environmental pollution is arranged at the discharge port end of the rotary screen body around the periphery of the whole rotary screen.
4. A ball mill discharge screening apparatus as claimed in any one of claims 1 to 3 wherein the baffles are located within the shroud at a distance of 1 to 10mm from the shroud; and/or
The height of the baffle is 10-20mm larger than the distance between the protective cover and the outlet end of the rotary screen.
5. A ball mill discharge screening device according to claim 3, characterized in that the diameter of the rotary screen is slightly smaller than the diameter of the ball mill discharge port, the diameter of the outlet end is 20-30cm, and the diameter of the shield is 20-100cm larger than the diameter of the rotary screen; and/or
One side of the protective cover is provided with an opening for the outlet of the ball mill to pass through, and the other side is provided with an opening for the outlet end of the rotary screen to expose.
6. A ball mill discharging and screening device according to any one of claims 1-3, characterized in that the rotary screen body is fixed on the outlet end of the ball mill through bolts, the screen body is made of stainless steel, the thickness of the screen body is 1-6mm, and holes with the diameter of 5-10mm are opened on the screen body.
7. A ball mill discharge screening apparatus as claimed in any one of claims 1 to 3, wherein the second screen deck has the same aperture as the rotary screen body.
8. A ball mill discharge screening apparatus as claimed in any one of claims 1 to 3 wherein the screw is made of 5cm flat iron, 10 x 2cm overflow openings are provided in the screw, and the distance between the two overflow openings along the screw is 30 cm.
9. A ball mill discharge screening device according to any one of claims 1 to 3, characterized in that a first screen plate is mounted below the screen body and inside the shield, and the aperture of the first screen plate is selected to be 1-5 cm.
10. A ball mill discharge screening apparatus as claimed in any one of claims 1 to 3 wherein the buffer barrel is cylindrical, having a height of 1.5 to 2.5 metres and a diameter of 1.5 to 2.5 metres; and/or
And a material accumulating device is arranged outside the discharge port of the screen body and the protective cover, the material accumulating device is a square material accumulating box, and the length, the width and the height of the material accumulating box are 15-50cm x 10-30 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121542995.6U CN215140544U (en) | 2021-07-07 | 2021-07-07 | Ball mill discharge screening plant in soda is made in circulation in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121542995.6U CN215140544U (en) | 2021-07-07 | 2021-07-07 | Ball mill discharge screening plant in soda is made in circulation in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215140544U true CN215140544U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121542995.6U Active CN215140544U (en) | 2021-07-07 | 2021-07-07 | Ball mill discharge screening plant in soda is made in circulation in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215140544U (en) |
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2021
- 2021-07-07 CN CN202121542995.6U patent/CN215140544U/en active Active
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