A separation device

Abstract

The application discloses a separating device, which comprises a separator, a cavity is formed in the inside of the separator, a plurality of main separating holes which are communicated with the cavity are arranged on the side wall of the separator, a protective cylinder is arranged outside the separator, a plurality of slots are arranged on the outer side wall of the protective cylinder in the circumferential direction, and a transition gap is arranged between the inner side wall of the protective cylinder and the outer side wall of the separator. The protective cylinder is used as a buffer barrier of the separator, the impact and wear of the material on the separator are reduced, the discharge of the material in the separator is not affected, the service life of the separator is greatly prolonged, the maintenance cost is reduced, and the grinding and separating effects on the material are better ensured.

Description

Technical Field

[0001] The invention relates to a grinding structure, in particular to a separation device. Background Art

[0002] In the grinder, the material and the grinding medium are in the cavity, and are driven by the high-speed rotation of the rotor to perform high-speed circular motion. Under the action of centrifugal force, the large-mass grinding media and coarse-sized material particles are in the outer layer, and the fine material particles are in the inner layer. Due to the high-speed operation, the grinding media will collide with each other, which is easy to produce broken grinding media. Therefore, the inner layer grinding media and material must pass through the gap separator to separate the mixture of material and grinding media. Materials smaller than the separator gap can pass through the separator smoothly and come out of the cavity. Grinding media larger than the separator gap cannot pass through the separator and continue to be ground in the cavity.

[0003] During the grinding process, both the material and the grinding medium in the cavity and the material outside the cavity will have a huge impact on the separator under high-speed rotation. Especially for large-flow materials, the wear on the separator under high-speed operation is greater, which will greatly shorten the service life of the separator and affect the grinding effect of the material. Summary of the Invention

[0004] The purpose of the present invention is to provide a separation device to solve one or more technical problems existing in the prior art and at least provide a beneficial option or create conditions.

[0005] The solution of the present invention to solve its technical problems is:

[0006] A separation device comprises: a separator, which is internally enclosed to form a cavity, and the side wall of the separator is provided with a plurality of main separation holes connected to the cavity; a protective tube, which is arranged on the outside of the separator, and the outer wall of the protective tube is circumferentially provided with a plurality of notches, and a transition gap is provided between the inner wall of the protective tube and the outer wall of the separator.

[0007] This technical solution has at least the following beneficial effects: the separation device is installed in the grinding chamber of the external grinder, the grinding media and the material to be ground are both installed in the grinding chamber, and the external rotor rotates in the grinding chamber. The unground material and the grinding media with larger mass are located in the inner and outer layers of the grinding chamber, while the ground material is located in the inner layer of the grinding chamber due to its lighter mass. It first enters the transition gap from the notch, and then enters the cavity through the main separation hole from the transition gap. Some of the unground material and the grinding media enter the transition gap and are continuously driven by the high-speed rotation of the rotor and are discharged along the notch, so that most of the material and the grinding media are located outside the protective tube. In this way, the protective tube can withstand the impact friction first. The protective tube can serve as a buffer barrier for the separator, reducing the impact wear of the material on the separator without affecting the discharge of the material in the separator, greatly extending the service life of the separator, reducing maintenance costs, and better ensuring the grinding and separation effect of the material.

[0008] As a further improvement to the above technical solution, the sidewalls of the notch are inclined from the inside to the outside, forming an angle with the inner diameter of the protective tube. The notch's sidewalls are tilted so that the notch's orientation deviates from the radial direction of the protective tube. During use, the notch's direction aligns with the flow direction of the material and grinding media within the chamber, facilitating the discharge of unground material and grinding media from the transition gap out of the protective tube and preventing unground material and grinding media from flowing back inward through the notch.

[0009] As a further improvement to the above technical solution, the protective tube includes a protective ring and a protective plate. Two protective rings are spaced apart in the vertical direction. The upper and lower ends of the protective plate are detachably connected to the two protective rings. Multiple protective plates are arranged around the protective rings, and the notch is formed between any two adjacent protective plates. During use, the protective plates at different positions may experience inconsistent wear. If a single protective plate is severely worn, it can be removed and replaced, reducing maintenance costs and making assembly and disassembly more convenient.

[0010] As a further improvement to the above technical solution, the separator includes a separation barrel, a pressure cap, and an end cap. The bottom end of the separation barrel and the bottom end of the protective barrel are both connected to the end cap. A discharge port is provided in the center of the end cap. The pressure cap is connected to the top end of the separation barrel and the top end of the protective barrel. The pressure cap, the separation barrel, and the end cap enclose the cavity. The main separation hole is provided on the side wall of the separation barrel. After the material enters the cavity through the main separation hole, it is discharged outward from the discharge port. The pressure cap and end cap are respectively located at the ends of the separation barrel and the protective barrel, serving both to install and position the separation barrel and the protective barrel and to enclose and form the cavity.

[0011] As a further improvement to the above technical solution, the separation cylinder includes a fixed ring and a separation plate. The separation plate is bent around the outer wall of the fixed ring and connected to the fixed ring, and the two sides of the separation plate are connected to each other. The separation plate used to separate the grinding medium and the material is completely wrapped around the outside of the fixed ring, and the two sides of the separation plate are connected to each other. During grinding, the ground material can enter the cavity from the main separation hole due to its lower quality, while the unground material and the grinding medium are located outside the separation cylinder. This can reduce the impact of the material and the grinding medium on the connection position of the separation plate. The separation plate itself is a whole plate structure, not easily damaged, and has a more solid structure.

[0012] As a further improvement to the above technical solution, a support frame is connected to the inner side of the separation plate, and the fixing ring is connected to the end of the support frame. The support frame can improve the structural stability of the separation plate, making the separation plate less likely to deform under the continuous impact of the material and the grinding medium, further increasing the overall service life.

[0013] As a further improvement to the above technical solution, the support frame includes support rings and connecting ribs. Multiple support rings are spaced apart vertically, with the connecting ribs connecting any two adjacent support rings. The separator plates wrap around the outside of the support rings, allowing for better bending and forming, while also supporting the entire periphery of the separator plates. The connecting ribs connect the multiple support rings into a single unit, resulting in a more compact overall structure.

[0014] As a further improvement to the above technical solution, the gland includes an annular cover body and a cover plate. The annular cover body is connected to the top of the retaining ring and the top of the protective cylinder, and the cover plate is detachably connected to the inner side of the annular cover body. The annular cover body primarily serves to pressurize and connect the protective cylinder to the end of the separation cylinder, while the cover plate can be removed from the annular cover body for easy replacement and maintenance.

[0015] As a further improvement to the above technical solution, the cover plate is provided with a plurality of sub-separation holes. The sub-separation holes can increase the flow area of ​​the separator, and materials can also enter the cavity through the sub-separation holes, reducing the impact and extrusion of the materials on the gap separator, further extending the service life of the separator.

[0016] As a further improvement to the above technical solution, the top surface of the end cap is provided with at least two annular steps extending from the inside to the outside. The bottom end of the separation barrel is connected to the inner annular step, and the bottom end of the protective barrel is connected to the outer annular step. The top surface of the end cap has at least two pre-positioned annular steps, and the bottom ends of the separation barrel and the protective barrel can be mounted and fixed on the two annular steps, respectively. This improves structural installation stability and facilitates pre-positioning of the separation barrel and protective barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described only illustrate some embodiments of the present invention, not all of them. Those skilled in the art can derive other design solutions and drawings based on these drawings without inventive effort.

[0018] Figure 1 It is an overall stereogram of the present invention;

[0019] Figure 2 It is an overall front view of the present invention;

[0020] Figure 3 yes Figure 2 AA cross-sectional structural diagram;

[0021] Figure 4 yes Figure 2 Schematic diagram of the BB cross-section structure.

[0022] In the accompanying drawings: 110-separation cylinder, 111-main separation hole, 120-pressure cover, 121-annular cover body, 122-cover plate, 123-sub-separation hole, 130-end cover, 131-discharge port, 140-support frame, 200-protective cylinder, 210-slot, 220-transition gap. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0024] Reference Figures 1 to 4 A separation device includes: a separator, which is enclosed to form a cavity inside, and the side wall of the separator is provided with multiple main separation holes 111 connected to the cavity; a protective tube 200, which is arranged around the outside of the separator, and the outer wall of the protective tube 200 is provided with a plurality of notches 210 along the circumferential direction, and a transition gap 220 is provided between the inner wall of the protective tube 200 and the outer wall of the separator.

[0025] As can be seen from the above, the separation device is installed in the grinding chamber of the external grinder, the grinding media and the material to be ground are both loaded into the grinding chamber, and the external rotor rotates in the grinding chamber. The unground material and the grinding media with a larger mass are located in the inner and outer layers of the grinding chamber, while the ground material is located in the inner layer of the grinding chamber due to its lighter mass. It first enters the transition gap 220 from the notch 210, and then enters the chamber from the transition gap 220 through the main separation hole 111, as shown in FIG. Figure 3 As shown in the direction of the arrow, some unground materials and grinding media enter the transition gap 220 and are discharged along the slot 210 under the continuous drive of the high-speed rotation of the rotor, so that most of the materials and grinding media are located outside the protective cylinder 200. In this way, the protective cylinder 200 can bear the impact friction first. The protective cylinder 200 can serve as a buffer barrier for the separator, reducing the impact wear of the material on the separator without affecting the discharge of the material in the separator, greatly extending the service life of the separator, reducing maintenance costs, and better ensuring the grinding and separation effect of the material.

[0026] In the above embodiment, the sidewalls of the slot 210 extend in a direction parallel to the inner diameter of the protective tube 200 from the inside to the outside. However, to better allow the grinding media entering the transition gap 220 to be ejected from the slot 210, the slot 210 can be designed to extend in a direction along the material flow direction. Specifically, the sidewalls of the slot 210 are inclined from the inside to the outside and form an angle with the inner diameter of the protective tube 200. The inclined sidewalls of the slot 210 are arranged so that the slot 210 is tilted away from the radial extension direction of the protective tube 200. During use, the slot 210 is oriented in the same direction as the flow direction of the material and grinding media in the cavity, facilitating the discharge of unground material and grinding media from the transition gap 220 to the outside of the protective tube 200 and preventing unground material and grinding media from flowing back inward from the slot 210.

[0027] The protective cylinder 200 primarily acts as a buffer and barrier for materials, subjecting it to varying degrees of wear during use. In this embodiment, the protective cylinder 200 comprises a protective ring and a protective plate. Two protective rings are spaced apart vertically, with the upper and lower ends of the protective plates removably connected to the two protective rings. Multiple protective plates are arranged around the protective rings, with the notch 210 formed between any two adjacent protective plates. During use, protective plates in different locations may experience inconsistent wear. If a single protective plate becomes severely worn, it can be removed and replaced, reducing maintenance costs and facilitating assembly and disassembly.

[0028] As a specific embodiment of the separator, the separator includes a separation cylinder 110, a pressure cap 120, and an end cap 130. The bottom end of the separation cylinder 110 and the bottom end of the protective cylinder 200 are both connected to the end cap 130. A discharge port 131 is provided in the center of the end cap 130. The pressure cap 120 is connected to the top end of the separation cylinder 110 and the top end of the protective cylinder 200. The pressure cap 120, the separation cylinder 110, and the end cap 130 enclose the cavity. The main separation hole 111 is provided on the side wall of the separation cylinder 110. After the material enters the cavity from the main separation hole 111, it is discharged outward from the discharge port 131. The pressure cap 120 and the end cap 130 are respectively located at the two ends of the separation cylinder 110 and the protective cylinder 200, and play a role in installing and positioning the separation cylinder 110 and the protective cylinder 200, and also play a role in enclosing and forming the cavity.

[0029] In the above embodiment, the separation cylinder 110 can be formed by splicing a plurality of sheet metal parts. During use, the material will collide with the spliced ​​parts of the sheet metal parts, making it easy for the sheet metal parts to separate from each other. In this embodiment, the separation cylinder 110 includes a fixed ring and a separation plate. The separation plate is bent around the outer wall of the fixed ring and connected to the fixed ring, and the two sides of the separation plate are connected to each other. The separation plate used to separate the grinding medium and the material is completely wrapped around the outside of the fixed ring, and the two sides of the separation plate are connected to each other. When used for grinding, the ground material can enter the cavity from the main separation hole 111 due to its low quality, while the unground material and the grinding medium are located outside the separation cylinder 110. This can reduce the impact of the material and the grinding medium on the connection position of the separation plate. The separation plate itself is a whole plate structure, not easy to be damaged, and the structure is more solid.

[0030] To improve the separation plate's resistance to bending, in this embodiment, a support frame 140 is connected to the inner side of the separation plate, and the fixing ring is connected to the end of the support frame 140. The support frame 140 improves the structural stability of the separation plate, making it less likely to deform under the continuous impact of the material and the grinding medium, further extending its overall service life.

[0031] As a specific embodiment of the support frame 140 structure, it includes support rings and connecting ribs. Multiple support rings are spaced apart vertically, with connecting ribs connecting any two adjacent support rings. The separator plates wrap around the support rings, allowing for better bending and forming, while also supporting the entire perimeter of the separator plates. The connecting ribs connect the multiple support rings to form a single unit, resulting in a more compact overall structure.

[0032] In practical applications, the connections between the fixed ring and the separation plate, the connections between the two sides of the separation plate, and the connection between the separation plate and the support ring can all be welded. Multiple weld points greatly improve the stability of the overall structure, thereby ensuring the separation effect. In addition, the support ring and the connecting ribs can be an integrated structure, such as forming a single integral casting with multiple support rings and multiple connecting ribs, or a separate structure, such as welding multiple support rings and multiple connecting ribs.

[0033] To prevent damage to the connecting structure on both sides of the separation plate, in this embodiment, connecting ribs are positioned directly opposite the junctions of the two sides of the separation plate. The connecting ribs support the junctions of the two sides of the separation plate, preventing deformation when material and grinding media collide with the junctions, further improving the stability of the overall structure.

[0034] The gland 120 is primarily used to connect the protective tube 200 to the top of the separation tube 110 and plays a major role in shielding and enclosing the cavity. In this embodiment, the gland 120 includes an annular cover 121 and a cover plate 122. The annular cover 121 is connected to the top of the fixing ring and the top of the protective tube 200, and the cover plate 122 is detachably connected to the inner side of the annular cover 121. The annular cover 121 plays the main role in pressing and connecting the protective tube 200 and the end of the separation tube 110, while the cover plate 122 can be removed from the annular cover 121 for easy replacement and maintenance.

[0035] In actual applications, a sealing cover plate 122 that completely blocks the top of the cavity can be selected according to the needs of use, or a sealing cover plate 122 can be configured to also separate materials. Specifically, the cover plate 122 is provided with a plurality of sub-separation holes 123. The sub-separation holes 123 can increase the flow area of ​​the separator, and materials can also enter the cavity through the sub-separation holes 123, reducing the impact and extrusion of the materials on the gap separator, further extending the service life of the separator.

[0036] In practical applications, the structures of the main separation hole 111 and the sub-separation hole 123 are not single, and can be circular or irregular through holes, or strip-shaped through holes, or tapered holes that are larger on the outside and smaller on the inside.

[0037] In this embodiment, the top surface of the end cap 130 is provided with at least two annular steps from the inside out. The bottom end of the separation barrel 110 is connected to the inner annular step, and the bottom end of the protective barrel 200 is connected to the outer annular step. The top surface of the end cap 130 has at least two pre-positioned annular steps, and the bottom ends of the separation barrel 110 and the protective barrel 200 can be mounted and fixed on the two annular steps, respectively. This not only improves the structural installation stability but also facilitates the pre-positioning of the separation barrel 110 and the protective barrel 200.

[0038] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A separation device is installed in the grinding chamber of an external grinding machine, the grinding medium and the material to be ground are both loaded into the grinding chamber, and the external rotor rotates in the grinding chamber, characterized by: include: A separator, the interior of which is surrounded by a cavity, and a side wall of the separator is provided with a plurality of main separation holes (111) connected to the cavity; A protective tube (200) is arranged around the outside of the separator, and the outer wall of the protective tube (200) is provided with a plurality of notches (210) along the circumferential direction, and a transition gap (220) is provided between the inner wall of the protective tube (200) and the outer wall of the separator. The protective tube (200) includes a protective ring and a protective plate, and two protective rings are arranged at intervals in the vertical direction, and the upper and lower ends of the protective plate are detachably connected to the two protective rings, respectively. A plurality of protective plates are arranged around the protective ring, and the notch (210) is formed between any two adjacent protective plates.

2. A separation device according to claim 1, characterized in that: The side wall of the notch (210) is inclined from the inside to the outside and forms an angle with the inner diameter of the protective tube (200).

3. A separation device according to claim 1, characterized in that: The separator includes a separation cylinder (110), a pressure cover (120) and an end cover (130), the bottom end of the separation cylinder (110) and the bottom end of the protective cylinder (200) are both connected to the end cover (130), a discharge port (131) is provided at the center of the end cover (130), the pressure cover (120) is connected to the top end of the separation cylinder (110) and the top end of the protective cylinder (200), the pressure cover (120) and the separation cylinder (110) and the end cover (130) form the cavity, and the main separation hole (111) is provided on the side wall of the separation cylinder (110).

4. A separation device according to claim 3, characterized in that: The separation cylinder (110) comprises a fixed ring and a separation plate, the separation plate is bent around the outer side wall of the fixed ring and connected to the fixed ring, and both side edges of the separation plate are connected to each other.

5. A separation device according to claim 4, characterized in that: The inner side of the separation plate is connected to a support frame (140), and the fixing ring is connected to the end of the support frame (140).

6. A separation device according to claim 5, characterized in that: The support frame (140) comprises a support ring and a connecting rib, wherein a plurality of the support rings are arranged at intervals in the vertical direction, and the connecting rib is connected between any two adjacent support rings.

7. A separation device according to claim 4, characterized in that: The pressure cover (120) comprises an annular cover body (121) and a cover plate (122), wherein the annular cover body (121) is connected to the top end of the fixing ring and the top end of the protective tube (200), and the cover plate (122) is detachably connected to the inner side of the annular cover body (121).

8. A separation device according to claim 7, characterized in that: A plurality of sub-separation holes (123) are provided on the cover plate (122).

9. A separation device according to claim 3, characterized in that: The top surface of the end cover (130) is provided with at least two annular steps from the inside to the outside, the bottom end of the separation cylinder (110) is connected to the annular step located on the inside, and the bottom end of the protective cylinder (200) is connected to the annular step located on the outside.

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