An upright metal separator

Abstract

The utility model provides a kind of vertical metal separator, including shell, reel, electrostatic cylinder and separation magnetic plate;Shell is hollow box, the top of which is provided with feeding inlet, the bottom of feeding inlet is provided with reel, first comb tooth is arranged on it, electrostatic cylinder is arranged on the side of reel, and the side of electrostatic cylinder is provided with toothed groove, first comb tooth and toothed groove are engaged with each other, and form feeding channel;The bottom of feeding channel is provided with separation magnetic plate;Separation magnetic plate includes first magnetic plate and second magnetic plate, and the magnetic pole of first magnetic plate and second magnetic plate is oppositely arranged, and is arranged at a certain distance to form magnetic field separation channel;The utility model is in application, metal impurities are carried charge in falling process, and the Lorentz force generated by magnetic field is used, metal impurities are deviated in falling process, and then material and metal impurities can be separated.Therefore, the utility model realizes the separation of metal impurities at lower cost, and waste is reduced.

Description

Technical Field

[0001] This invention relates to a separator, belonging to the field of powder separation technology, and particularly to a vertical metal separator. Background Technology

[0002] In industrial production, some powdered (or granular) products (such as pharmaceutical powders, food, or additives) may contain metallic impurities in the initial stages of processing. These impurities can affect the purity of the powdered products and also impact some detection processes during processing. Vertical metal separators are mainly used for separating metallic impurities from powdered materials. When the powder falls through the metal separator, once a metallic impurity is detected, the system immediately activates the separation mechanism to discharge the impurity. Typically, this traditional vertical metal separator consists of two parts: a detector for detecting metallic substances and a separation device. However, due to the limitations of detector accuracy, some metallic impurities may go undetected during the separation process, resulting in less than ideal performance.

[0003] Patent application number 201420231747.3, filed on May 7, 2014, discloses a device for removing non-metallic inclusions from metal powder. The device includes a separation chamber with a powder feeding mechanism at the upper opening and a powder collecting tank at the lower part. The separation chamber is connected to a gas system and a vacuum system. An electrostatic separation device is installed inside the separation chamber, comprising a high-voltage corona electrode connected to a high-voltage rectifier. A conveyor belt made of conductive material is located below the high-voltage corona electrode, and the conveyor belt is grounded and at a 20° angle to the vertical. The device features a 40° angle, a powder scraper behind the conveyor belt, and a waste powder collection channel extending outside the separation chamber. This device uses a corona field generated by a high-voltage corona electrode to charge the powder particles, and utilizes the conveyor belt to increase the contact area with the powder. A multi-stage electrostatic separation device is then employed to increase the number of times inclusions are removed, achieving the effect of separating metallic impurities. However, this device has a complex structure and requires inert gas protection during operation, resulting in high manufacturing and operating costs. Furthermore, the frequent contact between the powder and the conveyor belt leads to some waste during long-term use.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings and problems of high cost and powder waste in the existing technology, and to provide a vertical metal separator with lower cost and less powder waste.

[0006] To achieve the above objectives, the technical solution of the present invention is: a vertical metal separator, the separator comprising a casing, a drum, an electrostatic drum, and a separating magnetic plate;

[0007] The casing is a hollow box. The top of the casing has a feed inlet. The bottom of the feed inlet has a roller. The roller has a first comb tooth. The electrostatic cylinder is located on one side of the roller. The side of the electrostatic cylinder has a toothed groove. The first comb tooth and the toothed groove mesh with each other to form a feed channel.

[0008] A separation magnetic plate is provided at the bottom of the feeding channel; the separation magnetic plate includes a first magnetic plate and a second magnetic plate, the magnetic poles of the first magnetic plate and the second magnetic plate are arranged opposite each other, and the first magnetic plate and the second magnetic plate are arranged at a certain distance to form a magnetic field separation channel.

[0009] The housing includes an upper housing and a lower housing. The upper housing is a rectangular box with a feed inlet. The top of the feed inlet is rectangular, and the bottom of the feed inlet is elongated. The feed inlet gradually narrows and extends from the top to the bottom.

[0010] The lower housing is a right-angled trapezoidal box, and its interior is formed as a hollow right-angled trapezoidal lower cavity. A partition is provided in the middle of the bottom surface of the lower cavity.

[0011] A semi-cylindrical recessed drum cavity is provided on one side of the bottom of the feed inlet. The bottom surface of the drum cavity is a continuous inclined surface. A semi-cylindrical recessed electrostatic drum cavity is provided on the opposite side of the drum cavity. The bottom end of the inclined surface and the electrostatic drum cavity are spaced at a certain distance to form a feeding channel.

[0012] Both the first magnetic plate and the second magnetic plate are disposed in the lower cavity. Both the first magnetic plate and the second magnetic plate are right-angled trapezoidal plates. The small-diameter end of the first magnetic plate is vertically fixed to one side of the feeding channel. The second magnetic plate is symmetrically disposed to the first magnetic plate. The small-diameter end of the second magnetic plate is vertically fixed to the other side of the feeding channel.

[0013] The roll includes a roll body and a first comb tooth. The first comb tooth is in the shape of an inverted trapezoid. Multiple first comb teeth are evenly arranged in a single row along the length direction of the roll body at a certain distance, and form a multi-row structure of first comb teeth around the outer surface of the roll body. The roll is rotatably disposed in the roll cavity.

[0014] The electrostatic cylinder includes a toothed groove and an electrostatic cylinder body. The electrostatic cylinder body is in the shape of a semi-cylinder, and a toothed groove is formed on one side plane. The electrostatic cylinder is fixedly installed inside the electrostatic cylinder cavity.

[0015] The outer surfaces of both the first and second magnetic plates are covered with insulating material.

[0016] The outer surface of the roll is covered with insulating material or is made of insulating material.

[0017] A high-voltage electrostatic generator is installed outside the casing, and the high-voltage electrostatic generator is connected to an electrostatic cylinder, which is made of metal.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention discloses a vertical metal separator, comprising a casing, a drum, an electrostatic drum, and a separating magnetic plate. The casing is a hollow box with a feed inlet at the top. A drum is located at the bottom of the feed inlet and has first comb teeth. The electrostatic drum is located on one side of the drum and has toothed grooves on one side. The first comb teeth and the toothed grooves mesh with each other to form a feed channel. A separating magnetic plate is located at the bottom of the feed channel. The separating magnetic plate includes a first magnetic plate and a second magnetic plate, with their magnetic poles facing each other. The first magnetic plate and the second magnetic plate are spaced a certain distance apart to form a magnetic field separation channel. In application, this design causes metal impurities to carry an electric charge during the descent. The Lorentz force generated by the magnetic field causes the metal impurities to deflect during the descent, while the powder without impurities is not affected by the magnetic field and falls vertically, thus separating the material from the metal impurities. This device does not require a complex structure or operation, achieving the separation of metal impurities at a lower cost. Moreover, during the separation process, the material powder has less contact with the equipment, reducing waste. Therefore, the present invention can not only separate metal impurities, but also has low cost and less waste.

[0020] 2. In this invention, a vertical metal separator, both a first magnetic plate and a second magnetic plate are disposed within the lower chamber. Both the first and second magnetic plates are right-angled trapezoidal plates. The smaller diameter end of the first magnetic plate is vertically fixed to one side of the feeding channel. The second magnetic plate is symmetrically arranged with its smaller diameter end vertically fixed to the other side of the feeding channel. In application, the separation channel formed by the magnetic fields of the first and second magnetic plates not only generates the magnetic field but also serves as a limiting channel for the powder material, ensuring that the powder material is not affected by external airflow. During the separation stage, the free-fall vertical motion time is short, resulting in high separation efficiency. Therefore, this invention can not only separate metal impurities but also achieve high efficiency.

[0021] 3. In the vertical metal separator of the present invention, the outer surfaces of the first magnetic plate and the second magnetic plate are both covered with insulating material, and the outer surface of the drum is covered with insulating material or made of insulating material. In application, the insulating properties of the magnetic plate and the drum can prevent the electrical loss of metal impurities and also prevent metal impurities from adsorbing upon contact, which would lead to malfunction or frequent maintenance, increasing maintenance costs. Therefore, the maintenance cost of the present invention is low.

[0022] 4. This invention provides a vertical metal separator, comprising a casing, a drum, an electrostatic drum, and a separating magnetic plate. In application, this design achieves the separation of metal impurities from powder particles through a relatively simple structure. Compared to complex mechanical structures, the simplified machine structure further reduces the probability of malfunctions. Therefore, this invention not only effectively separates metal impurities but also has a low failure rate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is one of the cross-sectional views of the present invention.

[0025] Figure 3 This is the second cross-sectional view of the present invention.

[0026] Figure 4 This is a schematic diagram of the upper shell structure in this invention.

[0027] Figure 5 This is a schematic diagram showing the relative positions of the separating magnetic plates in this invention.

[0028] Figure 6 This is a schematic diagram of the structure of the roll in this invention.

[0029] Figure 7 This is a schematic diagram of the electrostatic cylinder in this invention.

[0030] Figure 8 This is a schematic diagram of the separation principle in this invention.

[0031] In the diagram: 1. Casing; 11. Feed inlet; 12. Feed channel; 13. Upper casing; 14. Lower casing; 141. Lower chamber; 142. Baffle plate; 2. Drum; 21. First comb tooth; 22. Toothed groove; 23. Drum body; 24. Electrostatic cylinder; 3. Separating magnetic plate; 4. First magnetic plate; 41. Second magnetic plate; 42. Magnetic field separation channel; 43. Drum cavity; 5. Inclined surface; 51. Feed channel; 52. Electrostatic cylinder cavity; 6. Lower chamber 141; Baffle plate; 7. High-voltage electrostatic generator. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] See Figure 1 — Figure 8 A vertical metal separator, the separator comprising a housing 1, a drum 2, an electrostatic drum 3, and a separating magnetic plate 4;

[0034] The housing 1 is a hollow box. The top of the housing 1 is provided with a feed inlet 11. The bottom of the feed inlet 11 is provided with a roller 2. The roller 2 is provided with a first comb tooth 21. The electrostatic roller 3 is provided on one side of the roller 2. The side of the electrostatic roller 3 is provided with a toothed groove 22. The first comb tooth 21 and the toothed groove 22 mesh with each other to form a feed channel 12.

[0035] The bottom of the feed channel 12 is provided with a separation magnetic plate 4; the separation magnetic plate 4 includes a first magnetic plate 41 and a second magnetic plate 42, the magnetic poles of the first magnetic plate 41 and the second magnetic plate 42 are arranged opposite to each other, and the first magnetic plate 41 and the second magnetic plate 42 are arranged at a certain distance to form a magnetic field separation channel 43.

[0036] The housing 1 includes an upper housing 13 and a lower housing 14. The upper housing 13 is a rectangular box with an inlet 11. The top of the inlet 11 is rectangular, and the bottom of the inlet 11 is a long and thin strip. The inlet 11 gradually narrows and extends from the top to the bottom.

[0037] The lower housing 14 is a right-angled trapezoidal box, and its interior forms a hollow right-angled trapezoidal lower cavity 141. A partition 142 is provided in the middle of the bottom surface of the lower cavity 141.

[0038] A semi-cylindrical recessed drum cavity 5 is provided on one side of the bottom of the feed inlet 11. The bottom surface of the drum cavity 5 is a continuous inclined surface 51. A semi-cylindrical recessed electrostatic drum cavity 6 is provided on the opposite side of the drum cavity 5. The bottom end of the inclined surface 51 and the electrostatic drum cavity 6 are spaced a certain distance apart to form a feeding channel 52.

[0039] The first magnetic plate 41 and the second magnetic plate 42 are both disposed in the lower box cavity 141. The first magnetic plate 41 and the second magnetic plate 42 are both right-angled trapezoidal plates. The small diameter end of the first magnetic plate 41 is vertically fixed to one side of the feeding channel 52. The second magnetic plate 42 is symmetrically disposed with the first magnetic plate 41. The small diameter end of the second magnetic plate 42 is vertically fixed to the other side of the feeding channel 52.

[0040] The roll 2 includes a roll body 23 and a first comb tooth 21. The first comb tooth 21 is in the shape of an inverted trapezoid. Multiple first comb teeth 21 are evenly arranged in a single row along the length direction of the roll body 23 at a certain distance, and form a multi-row structure of first comb teeth 21 around the outer surface of the roll body 23. The roll 2 is rotatably disposed in the roll cavity 5.

[0041] The electrostatic cylinder 3 includes a toothed groove 22 and an electrostatic cylinder body 24. The electrostatic cylinder body 24 is in the shape of a semi-cylinder, and a toothed groove 22 is formed on one side plane. The electrostatic cylinder 3 is fixedly installed in the electrostatic cylinder cavity 6.

[0042] The outer surfaces of both the first magnetic plate 41 and the second magnetic plate 42 are covered with insulating material.

[0043] The outer surface of the roll 2 is covered with insulating material or is made of insulating material.

[0044] A high-voltage electrostatic generator 7 is installed outside the housing 1. The high-voltage electrostatic generator 7 is connected to the electrostatic cylinder 3, which is made of metal.

[0045] The principle of this invention is explained as follows:

[0046] In this invention, the principle of magnetic field deflection rather than magnetic adsorption is utilized. Metal impurities are deflected by force under the action of magnetic field without contact. The lack of contact also avoids the loss of power of the impurities. At the same time, the artificial magnet has strong magnetism, is easy to produce, has a long service life, and does not require complicated maintenance. In addition, in order to avoid the casing 1 from interfering with the magnetic field, it should have the characteristic of not inducing the magnetic field, so as to select a suitable material for covering or manufacturing.

[0047] In this invention, the powdered material refers to powdered or granular substances such as pharmaceutical powder, food powder, or additives, which do not themselves induce a magnetic field, but may induce a magnetic field due to metallic impurities within them. Therefore, substances that can induce a magnetic field themselves (e.g., iron powder, cobalt powder, ferrite powder, etc.) are not applicable to this design.

[0048] Example 1:

[0049] See Figure 1 — Figure 8 A vertical metal separator includes a housing 1, a drum 2, an electrostatic drum 3, and a separating magnetic plate 4. The housing 1 is a hollow box with an inlet 11 at the top and a drum 2 at the bottom. The drum 2 has first comb teeth 21. The electrostatic drum 3 is located on one side of the drum 2 and has a toothed groove 22 on one side. The first comb teeth 21 and the toothed groove 22 mesh with each other to form an inlet channel 12. The separating magnetic plate 4 is located at the bottom of the inlet channel 12. The separating magnetic plate 4 includes a first magnetic plate 41 and a second magnetic plate 42. The magnetic poles of the first magnetic plate 41 and the second magnetic plate 42 are arranged opposite each other, and the first magnetic plate 41 and the second magnetic plate 42 are spaced apart to form a magnetic field separation channel 43.

[0050] In application, the powder material is first placed into the feed inlet 11, and the drum 2 is started to rotate continuously clockwise to loosely guide the powder material through the feed channel 12. During this process, the static electricity generated by the electrostatic drum 3 will cause the metal impurities in the powder material to be charged. Then, during the falling process, the powder material passes through the magnetic field separation channel 43 and the magnetic field generated by the separation magnetic plate 4, which causes the metal impurities to be deflected during the descent due to the influence of the Lorentz force, while the powder particles without metal will fall vertically, thereby separating the desired material from the metal impurities.

[0051] Example 2:

[0052] The basic content is the same as in Example 1, except that:

[0053] The housing 1 includes an upper housing 13 and a lower housing 14. The upper housing 13 is a rectangular box with an inlet 11. The top of the inlet 11 is rectangular, and the bottom of the inlet 11 is elongated. The inlet 11 gradually narrows and extends from the top to the bottom. The lower housing 14 is a right-angled trapezoidal box with a hollow right-angled trapezoidal lower cavity 141 inside. A partition 142 is provided in the middle of the bottom surface of the lower cavity 141.

[0054] In application, the funnel-shaped structure of the inlet 11 facilitates the feeding of powder materials and can guide the powder materials directly into the feed channel 12, which facilitates the centralized dispersion and charging of the powder. After the powder materials are separated, the partition 142 can isolate the materials and metal impurities, which is convenient for subsequent collection work.

[0055] Example 3:

[0056] The basic content is the same as in Example 2, except that:

[0057] A semi-cylindrical recessed drum cavity 5 is provided on one side of the bottom of the feed inlet 11. The bottom surface of the drum cavity 5 is a continuous inclined surface 51. A semi-cylindrical recessed electrostatic drum cavity 6 is provided on the opposite side of the drum cavity 5. The bottom end of the inclined surface 51 and the electrostatic drum cavity 6 are spaced apart by a certain distance to form a feeding channel 52. The first magnetic plate 41 and the second magnetic plate 42 are both provided in the lower box cavity 141. The shape of the first magnetic plate 41 and the second magnetic plate 42 is a right-angled trapezoidal plate. The small diameter end of the first magnetic plate 41 is vertically fixed to one side of the feeding channel 52. The second magnetic plate 42 is symmetrically arranged with respect to the first magnetic plate 41. The small-diameter end of plate 42 is vertically fixed to the other side of the feeding channel 52; the roll 2 includes a roll body 23 and a first comb tooth 21. The first comb tooth 21 is in the shape of an inverted trapezoid. Multiple first comb teeth 21 are evenly arranged in a single row along the length direction of the roll body 23 at a certain distance, and form a multi-row structure of first comb teeth 21 around the outer surface of the roll body 23. The roll 2 is rotatably disposed in the roll cavity 5; the electrostatic roll 3 includes a toothed groove 22 and an electrostatic roll body 24. The electrostatic roll body 24 is in the shape of a semi-cylinder, and a toothed groove 22 is formed on one side plane. The electrostatic roll 3 is fixedly disposed in the electrostatic roll cavity 6.

[0058] In application, the feeding channel 52 formed by the meshing of the first comb teeth 21 and toothed grooves 22 in the multi-row structure allows the powder material to be dispersed by rotation when it enters the feeding channel 52, increasing the contact area between the powder and the electrostatic cylinder 3, so that the metal impurities can be fully charged, improving the accuracy of the device. In addition, the inclined surface 51 of the bottom surface of the drum cavity 5 can guide the powder material directly into the magnetic field separation channel 43, improving efficiency and reducing powder waste. The distance between the first magnetic plate 41 and the second magnetic plate 42 is relatively close, which plays a certain role in limiting the powder material. Furthermore, the casing 1 is not affected by the external airflow, so the powder material will not scatter everywhere.

[0059] Example 4:

[0060] The basic content is the same as in Example 3, except that:

[0061] The outer surfaces of the first magnetic plate 41 and the second magnetic plate 42 are both covered with insulating material (preferably artificial magnets).

[0062] In applications, the insulating material covering the magnetic plate prevents metallic impurities from contacting the magnet and losing their charge.

[0063] Example 5:

[0064] The basic content is the same as in Example 4, except that:

[0065] The outer surface of the roll 2 is covered with insulating material or is made of insulating material.

[0066] In application, the insulating properties of drum 2 can prevent metal impurities from being attracted to drum 2 after being charged, thus preventing them from falling off; at the same time, drum 2 is driven by a motor to rotate clockwise during operation, and can also be rotated in reverse during maintenance.

[0067] Example 6:

[0068] The basic content is the same as in Example 5, except that:

[0069] A high-voltage electrostatic generator 7 is installed outside the housing 1. The high-voltage electrostatic generator 7 is connected to the electrostatic cylinder 3, which is made of metal.

[0070] In application, the current generated by the high-voltage electrostatic generator 7 enables the electrostatic cylinder 3 to add charge to metal impurities through static electricity. At the same time, since the electrostatic cylinder 3 is a metal part, it does not require frequent maintenance, thus reducing maintenance costs.

[0071] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. A vertical metal separator, characterized in that: The separator includes a housing (1), a drum (2), an electrostatic drum (3), and a separating magnetic plate (4); The housing (1) is a hollow box. The top of the housing (1) is provided with a feed inlet (11). The bottom of the feed inlet (11) is provided with a roller (2). The roller (2) is provided with a first comb tooth (21). The electrostatic cylinder (3) is provided on one side of the roller (2). The side of the electrostatic cylinder (3) is provided with a toothed groove (22). The first comb tooth (21) and the toothed groove (22) mesh with each other to form a feed channel (12). The bottom of the feed channel (12) is provided with a separation magnetic plate (4); the separation magnetic plate (4) includes a first magnetic plate (41) and a second magnetic plate (42), the magnetic poles of the first magnetic plate (41) and the second magnetic plate (42) are arranged opposite to each other, and the first magnetic plate (41) and the second magnetic plate (42) are arranged at a certain distance to form a magnetic field separation channel (43). The housing (1) includes an upper housing (13) and a lower housing (14). The lower shell (14) is a right trapezoidal box, and its interior is formed as a hollow right trapezoidal lower cavity (141). A partition (142) is provided in the middle of the bottom surface of the lower cavity (141). A semi-cylindrical recessed drum cavity (5) is provided on one side of the bottom of the feed inlet (11). The bottom surface of the drum cavity (5) is a continuous inclined surface (51). A semi-cylindrical recessed electrostatic drum cavity (6) is provided on the opposite side of the drum cavity (5). The bottom end of the inclined surface (51) and the electrostatic drum cavity (6) are spaced a certain distance apart to form a feeding channel (52). The first magnetic plate (41) and the second magnetic plate (42) are both disposed in the lower box cavity (141). The first magnetic plate (41) and the second magnetic plate (42) are both right-angled trapezoidal plates. The small diameter end of the first magnetic plate (41) is vertically fixed to one side of the feeding channel (52). The second magnetic plate (42) is symmetrically disposed with the first magnetic plate (41). The small diameter end of the second magnetic plate (42) is vertically fixed to the other side of the feeding channel (52).

2. A vertical metal separator according to claim 1, characterized in that: The upper shell (13) is a rectangular box with an inlet (11) on it. The top of the inlet (11) is rectangular, and the bottom of the inlet (11) is long and thin. The inlet (11) gradually narrows and extends from the top to the bottom.

3. A vertical metal separator according to claim 1, characterized in that: The roll (2) includes a roll body (23) and a first comb tooth (21). The first comb tooth (21) is in the shape of an inverted trapezoid. Multiple first comb teeth (21) are evenly arranged in a single row along the length direction of the roll body (23) at a certain distance, and form a multi-row structure of first comb teeth (21) around the outer surface of the roll body (23). The roll (2) is rotatably disposed in the roll cavity (5).

4. A vertical metal separator according to claim 1, characterized in that: The electrostatic cylinder (3) includes a toothed groove (22) and an electrostatic cylinder body (24). The electrostatic cylinder body (24) is a semi-cylindrical body with a toothed groove (22) formed on one side plane. The electrostatic cylinder (3) is fixedly installed inside the electrostatic cylinder cavity (6).

5. A vertical metal separator according to claim 1, characterized in that: The outer surfaces of the first magnetic plate (41) and the second magnetic plate (42) are both covered with insulating material.

6. A vertical metal separator according to claim 1, characterized in that: The outer surface of the roll (2) is covered with insulating material or is made of insulating material.

7. A vertical metal separator according to claim 1, characterized in that: A high-voltage electrostatic generator (7) is provided outside the casing (1). The high-voltage electrostatic generator (7) is connected to the electrostatic cylinder (3), which is made of metal.

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