Small blade for spiral classifier and spiral classifier
By improving the blade structure and optimizing the equipment, the problem of difficult replacement due to wear was solved, enabling rapid installation and efficient grading, reducing the labor intensity of operation, and improving the applicability and grading efficiency of the equipment.
Patent Information
- Application Number
- CN202421034599.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The small blades of existing spiral classifiers are severely worn, making replacement and maintenance time-consuming and labor-intensive, resulting in high operational labor intensity and low classification efficiency.
A small blade was designed, which simplifies the installation and replacement process by setting through grooves and positioning protrusions on the edge of the spiral body, combined with the connection method of fixing holes and fixing bolts, and uses polyurethane material to improve wear resistance; at the same time, the structural optimization of the spiral classifier includes hydraulic cylinder adjustment of tilt angle and lifting adjustment of overflow trough, which enhances the applicability and stability of the equipment.
It enables rapid fixing and efficient replacement of small blades, reduces labor intensity, improves connection tightness and maintenance efficiency, and enhances grading effect and equipment applicability.
Smart Images
Figure CN222325400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ore dressing equipment, in particular to a small blade used on a spiral classifier and the spiral classifier. Background Art
[0002] In the process of recycling and comprehensive utilization of valuable metals in ferroalloy waste slag, water-quenched slag needs to be graded after crushing to recover valuable metals in the slag slurry. The classifier is a very important equipment in the smelting waste slag recycling industry. It is used to grade the particles in the slag slurry. The commonly used spiral classifier currently uses the principle that solid particles have different specific gravities and therefore different precipitation speeds in the liquid for classification. However, the small blades installed on the spiral body of the spiral classifier are prone to wear due to long-term contact with mud, gravel, and hard sediments formed after the slag slurry is precipitated. Regular shutdowns are required for replacement during production. The existing small blades are fastened to the spiral body by two sets of bolts to tighten and install. In addition, two sets of wrenches are required to clamp the nuts and nuts of the screw rods front and back and then twist them. As a result, it takes a long time to replace all the small blades, which is time-consuming and labor-intensive. The operation labor intensity is high, and the replacement and maintenance efficiency is also low. Utility Model Content
[0003] The main purpose of the utility model is to overcome the defects of the above-mentioned background technology and provide a small blade used for a spiral classifier and a spiral classifier.
[0004] To achieve the above-mentioned purpose, the utility model proposes a small blade for a spiral classifier, wherein several small blades are installed around the edge of the spiral body of the spiral classifier, and a through groove corresponding to the thickness and curvature of the edge of the spiral body is provided on the bottom surface of the small blade, and positioning grooves are vertically provided on the two side walls in the through groove, and positioning convex strips corresponding to the positioning grooves are provided on the two side walls of the spiral body, and a first fixing hole is provided on the side wall of the small blade, and a second fixing hole corresponding to the first fixing hole is provided on the side wall of the spiral body, and nut retaining ribs are convex on both sides of the hole opening at one end of the first fixing hole, when the small blade is inserted on the edge of the spiral body through the through groove, the positioning convex strip is inserted into the positioning groove, and fixing bolts are inserted into the first fixing hole and the second fixing hole for fixed connection, and the matching nut of the fixing bolt is clamped between the two nut retaining ribs. After the small blade is inserted into the edge of the spiral body through the through groove and reaches the bottom, the positioning convex strip is inserted into the positioning groove to limit the left and right shaking of the small blade, and then the fixing bolt is inserted into the first fixing hole and the second fixing hole from the back of the spiral body, and the matching nut is stuck between the two nut locking ribs to limit the rotation. At this time, the operator only needs to use a wrench to clamp the fixing bolt and rotate it to quickly fix the small blade on the spiral body. The operation is simple and convenient, which effectively reduces the labor intensity and improves the tightness of the small blade connection and the maintenance and replacement efficiency.
[0005] To further optimize the technical solution, a plurality of sieve holes are provided on the small blades, through which the slurry can be screened while being pushed upward by the small blades, thereby preventing coarse particles from being mixed with a large amount of fine materials, and further improving the classification effect.
[0006] To further optimize the technical solution, the small blades are made of polyurethane material. Polyurethane material has good wear resistance and low friction coefficient, which can effectively reduce the use cost.
[0007] To further optimize the technical solution, the nut retaining rib is arranged on the front side of the small blade in the rotation direction, and the thread direction of the fixing bolt is set as reverse thread, so that the top of the fixing bolt is subjected to the friction force in the same direction as the tightening. By setting the fixing bolt as reverse thread, the friction force on the fixing bolt is in the same direction as the tightening, preventing the small blade from loosening due to friction.
[0008] The utility model also proposes a spiral classifier, including a trough body, a rotating shaft, a spiral body, a power device, a frame, a base and a small blade, wherein the rotating shaft can be rotatably mounted in the trough body, the spiral body is arranged on the rotating shaft, the small blade is arranged on the edge of the spiral body, the trough body and the power device are both installed on the frame, the output end of the power device is connected to one end of the rotating shaft, the frame is tiltedly arranged on the base, a return port is arranged at the bottom of the upper end of the trough body, an overflow trough is arranged at the lower end of the trough body, and a feed port is arranged on the side wall of the trough body. After the slurry to be classified enters the trough body from the feed port, it is continuously stirred by the small blade, and the slurry is pushed upward at a certain angle, so that the fine particles in the ore slurry are suspended on the surface and flow to the overflow trough to overflow, while the coarse particles sink to the bottom of the trough body and are sent to the return port by the spiral body and the small blade to be discharged as returned sand to achieve classification.
[0009] To further optimize the technical solution, one end of the frame is hinged to one end of the base, a hydraulic cylinder is provided in the middle of the base, one end of the hydraulic cylinder is hinged to the base, and the other end is hinged to the bottom surface of the frame. The trough can be pushed by the hydraulic cylinder to adjust the tilt angle to meet the classification requirements of different particle sizes and increase applicability.
[0010] To further optimize the technical solution, a triangular support frame is provided on both sides of the base, and a support rod is provided on the triangular support frame along the mid-vertical line, and a plurality of positioning holes are provided on the support rod, and a cross bar is inserted into the positioning holes at two same horizontal heights, and the cross bar abuts against the bottom end of the frame. When the tank body rotates to the required angle, the frame is supported by the cross bar to prevent the frame and the tank body from falling back, thereby increasing stability.
[0011] Further optimize the technical solution, the female pair, the nut pair is connected with a screw rod, the tail of the trough body is provided with a gantry, the upper end of the screw rod passes through the gantry and is provided with a first bevel gear, the gantry is rotatably provided with a driving rod, the two sides of the driving rod are respectively provided with second bevel gears, the second bevel gear is meshed and connected with the first bevel gear, and one end of the driving rod is connected with a driving member. The driving rod is driven to rotate by the driving member, the second bevel gear drives the first bevel gear to rotate synchronously, and the screw rods on both sides also rotate synchronously, thereby driving the overflow trough to rise and fall, adjusting the overflow height, and changing the area of the sedimentation zone, thereby adjusting the grading particle size.
[0012] To further optimize the technical solution, guide rails are provided on both sides of the tail end of the trough body, guide grooves are provided on two opposite surfaces of the guide rails, and convex edges corresponding to the guide grooves are provided on both sides of the contact surface between the overflow trough and the trough body. The convex edges on both sides of the overflow trough are inserted into the guide groove, so that the entire overflow trough cannot be separated front and back or left and right.
[0013] Further optimizing the technical solution, the overflow trough is a rectangular trough structure with an open top, a discharge port is provided at the bottom of the overflow trough, the height of the contact surface between the overflow trough and the trough body is lower than the other three surfaces, and a sealing strip is provided on the contact surface between the overflow trough and the trough body. The sealing strip prevents liquid from leaking between the overflow trough and the trough body.
[0014] The beneficial effects of the utility model include: after the small blade is inserted into the edge of the spiral body to the bottom through the through groove, the positioning convex strip is inserted into the positioning groove to limit the left and right shaking of the small blade, and then the fixing bolt is inserted into the first fixing hole and the second fixing hole, and the matching nut of the fixing bolt is stuck between the two nut locking ribs and cannot rotate. At this time, the operator only needs to use a wrench to clamp the nut of the fixing bolt and rotate it to quickly fix the small blade on the spiral body. The operation is simple and convenient, and effectively improves the tightness of the small blade connection and the maintenance and replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of a small blade used on a spiral classifier in an embodiment of the utility model.
[0016] Figure 2 It is a cross-sectional schematic diagram of the spiral body in the embodiment of the utility model.
[0017] Figure 3 It is an overall schematic diagram of the spiral classifier in the embodiment of the utility model.
[0018] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.
[0019] Figure 5 It is a schematic diagram of the overflow trough in the embodiment of the utility model.
[0020] Figure numerals: 1 small blade; 101 through groove; 102 positioning groove; 103 first fixing hole; 104 nut locking rib; 105 sieve hole; 2 spiral body; 201 positioning convex strip; 202 second fixing hole; 3 fixing bolt; 301 matching nut; 4 trough body; 401 return port; 402 feed port; 403 gantry; 404 guide rail; 405 guide groove; 5 rotating shaft; 6 power unit; 7 frame; 8 base; 801 hydraulic cylinder; 802 triangular support frame; 803 support rod; 8031 positioning hole; 8032 cross bar; 9 overflow groove; 901 nut pair; 902 screw rod; 903 first bevel gear; 904 drive rod; 905 second bevel gear; 906 drive member; 907 flange; 908 discharge port; 909 sealing strip. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.
[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0025] Example 1
[0026] See also Figure 1 and Figure 2 In this embodiment, a small blade 1 for a spiral classifier is disclosed. A plurality of small blades 1 are installed around the edge of a spiral body 2 of the spiral classifier. A through groove 101 corresponding to the thickness and curvature of the edge of the spiral body 2 is provided on the bottom surface of the small blade 1. Positioning grooves 102 are vertically provided on both side walls of the through groove 101. Positioning convex strips 201 corresponding to the positioning grooves 102 are provided on both side walls of the spiral body 2. A first fixing hole 103 is provided on the side wall of the small blade 1. The first fixing hole 103 passes through the through groove 101 area. A second fixing hole 202 corresponding to the first fixing hole 103 is provided on the side wall of the spiral body 2. Nut locking ribs 104 are provided on both sides of the hole opening at one end of the first fixing hole 103. When the small blade 1 passes through the through groove 1 After 01 is inserted on the edge of the spiral body 2, the positioning convex strip 201 is inserted into the positioning groove 102, and the fixing bolt 3 is inserted into the first fixing hole 103 and the second fixing hole 202 for fixed connection. The matching nut 301 of the fixing bolt 3 is stuck between the two nut locking ribs 104. Specifically, a plurality of sieve holes 105 are also opened on the small blade 1, and the sieve holes 105 are arranged in the area above the through groove 101. When the small blade 1 rotates to push the coarse-grained material to move, it can be screened simultaneously through the sieve holes 105 to avoid the coarse-grained material being mixed with more fine materials. The small blade 1 is made of polyurethane material. Compared with metal material (cast iron), polyurethane material has good wear resistance and low friction coefficient, which can effectively extend the service life and reduce the use cost. In this embodiment, after the through groove 101 of the small blade 1 is inserted into the edge of the spiral body 2 to the bottom, the positioning convex strip 201 is inserted into the positioning groove 102 to limit the left and right shaking of the small blade 1, and the first fixing hole 103 and the second fixing hole 202 are just aligned. The fixing bolt 3 is inserted into the first fixing hole 103 and the second fixing hole 202 from the back of the spiral body 2, and the matching nut 301 is stuck between the two nut locking ribs 104 to prevent the matching nut 301 from rotating. At this time, the operator only needs to use a wrench to clamp the fixing bolt 3 and rotate it to quickly fix the small blade 1 on the spiral body 2. The operation is simple and convenient, which effectively reduces the labor intensity and improves the tightness of the connection of the small blade 1 and the maintenance and replacement efficiency.
[0027] In a preferred embodiment, the nut retaining rib 104 is arranged on the front side of the rotation direction of the small blade 1, and the thread direction of the fixing bolt 3 is set to be reverse thread, so that the top of the fixing bolt 3 is subjected to the friction force in the same direction as the tightening. When the small blade 1 rotates, the front side is subjected to a large friction force. Since the nut retaining rib 104 has the function of buffering friction and preventing deformation, it effectively prevents the matching nut 301 from loosening due to the friction force. Moreover, after the fixing bolt 3 is set to be reverse thread, the friction force it is subjected to is in the same direction as the tightening, which effectively prevents the small blade 1 from loosening, and further improves the tightness of the connection of the small blade 1.
[0028] Example 2
[0029] See also Figures 1 to 5 The spiral classifier disclosed in this embodiment includes a trough body 4, a rotating shaft 5, a spiral body 2, a power device 6, a frame 7, a base 8 and the small blades 1 in Example 1. The rotating shaft 5 can be rotatably mounted in the trough body 4. Specifically, the trough body 4 is a U-shaped trough structure, and the trough body 4 is welded by steel plates and various steel sections. The power device 6 is a motor equipped with a reduction box. The spiral body 2 is spirally arranged on the rotating shaft 5. A plurality of small blades 1 are spirally arranged along the edge of the spiral body 2 for fixed connection. The trough body 4 and the power device 6 are fixedly connected. The power devices 6 are all installed on the frame 7, the output end of the power device 6 is connected to one end of the rotating shaft 5, and the frame 7 is tilted on the base 8. After tilting, the end carrying the power device 6 is the upper end, and the bottom of the slope is the lower end. The tilt angle is between 10° and 20°, for example, 10°, 11°, 14°, 16°, 17°, 20°, etc. A return port 401 is provided at the bottom of the upper end of the trough body 4, an overflow tank 9 is provided at the tail of the lower end of the trough body 4, and a feed port 402 is provided on the side wall of the trough body 4. In this embodiment, the crushed material (water-quenched slag) enters the tank body 4 from the feed port 402, and the power device 6 drives the rotating shaft 5 to rotate. The spiral body 2 on the rotating shaft 5 rotates synchronously and the small blade 1 stirs continuously. The slurry is pushed upward at a certain angle, so that the fine particles in the slurry are suspended on the surface and flow to the overflow tank 9 to overflow, while the coarse particles sink to the bottom of the tank body 4 and are sent to the return port 401 by the spiral body 2 and the small blade 1 as returned sand for discharge and classification. When the small blade 1 rotates to push the slurry, the sieve holes 105 thereon can be screened synchronously to avoid the coarse particles being mixed with more fine materials, thereby further improving the classification efficiency.
[0030] In a preferred embodiment, one end (bottom end) of the frame 7 is hinged to one end of the base 8, and a hydraulic cylinder 801 is provided in the middle of the base 8, one end of the hydraulic cylinder 801 is hinged to the base 8, and the other end is hinged to the bottom surface of the frame 7. The entire frame 7 (tank body 4) can be rotated and adjusted to an inclination angle by the hydraulic cylinder 801 to meet the classification requirements of different particle sizes and increase applicability.
[0031] In a specific example, a triangular support frame 802 is provided on both sides of the base 8, and a support rod 803 is provided along the mid-vertical line of the triangular support frame 802. A plurality of positioning holes 8031 are vertically provided on the support rod 803. A cross bar 8032 is inserted into two positioning holes 8031 at the same level, and the cross bar 8032 abuts against the bottom end of the frame 7. When the hydraulic cylinder 801 supports the frame 7 to rotate around one end of the base 8 to a desired angle, the frame 7 is supported by inserting the corresponding cross bars 8032 into the positioning holes 8031 on both sides to prevent the frame 7 from falling back and increase stability.
[0032] In a preferred embodiment, nut pairs 901 are respectively provided on both sides of the overflow trough 9, a screw rod 902 is connected to the nut pair 901, and a gantry 403 is provided at the tail end of the trough body 4. Specifically, the gantry 403 is a gantry used in the lifting device of a traditional spiral classifier, and the upper end of the screw rod 902 passes through the gantry 403 and is provided with a first bevel gear 903. A driving rod 904 is rotatably provided on the gantry 403, and second bevel gears 905 are respectively provided on both sides of the driving rod 904. The second bevel gear 905 is meshed and connected with the first bevel gear 903, and one end of the driving rod 904 is connected to a driving member 906. In this embodiment, the driving member 906 uses a crank to manually drive the driving rod 904 to rotate. Of course, it can also be driven by a motor. When the driving rod 904 rotates, the second bevel gear 905 drives the first bevel gear 903 to rotate synchronously, and the screw rods 902 on both sides also rotate synchronously, thereby driving the overflow trough 9 to rise and fall, adjusting the overflow height, and changing the area of the sedimentation zone, thereby adjusting the grading particle size.
[0033] In a specific example, guide rails 404 are provided on both sides of the rear end of the tank body 4, guide grooves 405 are provided on two opposite surfaces of the guide rails 404, and convex edges 907 corresponding to the guide grooves 405 are provided on both sides of the contact surface between the overflow tank 9 and the tank body 4. The convex edges 907 on both sides of the overflow tank 9 are inserted into the guide groove 405, so that the entire overflow tank 9 cannot be separated front and back or left and right, and can only move up and down along the guide groove 405 to adjust the overflow height.
[0034] In the specific example, the overflow groove 9 is a rectangular groove structure with an open top, and a discharge port 908 is provided at the bottom of the overflow groove 9, wherein the height of the contact surface between the overflow groove 9 and the groove body 4 is lower than the other three surfaces, and a sealing strip 909 is provided on the contact surface between the overflow groove 9 and the groove body 4, and the sealing strip 909 prevents liquid from leaking from between the overflow groove 9 and the groove body 4.
[0035] The above content is a further detailed description of the utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the scope of protection of the utility model. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.
Claims
1. A small blade for a spiral classifier, wherein a plurality of the small blades are installed around the edge of the spiral body of the spiral classifier, characterized in that: The bottom surface of the small blade is provided with a through groove corresponding to the thickness and curvature of the edge of the spiral body, and the two side walls in the through groove are respectively vertically provided with positioning grooves, and the two side walls of the spiral body are provided with positioning convex strips corresponding to the positioning grooves, the side wall of the small blade is provided with a first fixing hole, and the side wall of the spiral body is provided with a second fixing hole corresponding to the first fixing hole, and nut retaining ribs are protruding on both sides of the hole opening at one end of the first fixing hole. When the small blade is inserted into the edge of the spiral body through the through groove, the positioning convex strip is inserted into the positioning groove, and fixing bolts are inserted into the first fixing hole and the second fixing hole for fixed connection, and the matching nut of the fixing bolt is clamped between the two nut retaining ribs.
2. The small blade for a spiral classifier according to claim 1, characterized in that: A plurality of sieve holes are formed on the small blades.
3. The small blade for spiral classifier according to claim 1, characterized in that: The small blades are made of polyurethane material.
4. The small blade for spiral classifier according to claim 1, characterized in that: The nut locking rib is arranged on the front side of the small blade in the rotation direction, and the thread direction of the fixing bolt is set as reverse thread, so that the top of the fixing bolt is subjected to the friction force in the same direction as the tightening.
5. A spiral classifier, characterized in that: It comprises a trough body, a rotating shaft, a spiral body, a power device, a frame, a base and the small blades as described in any one of claims 1 to 4, wherein the rotating shaft is rotatably mounted in the trough body, the spiral body is arranged on the rotating shaft, the small blades are arranged on the edge of the spiral body, the trough body and the power device are both installed on the frame, the output end of the power device is connected to one end of the rotating shaft, the frame is obliquely arranged on the base, a return port is provided at the bottom of the upper end of the trough body, an overflow tank is provided at the lower end of the trough body, and a feed port is provided on the side wall of the trough body.
6. The spiral classifier according to claim 5, characterized in that: One end of the frame is hinged to one end of the base, a hydraulic cylinder is provided in the middle of the base, one end of the hydraulic cylinder is hinged to the base, and the other end is hinged to the bottom surface of the frame.
7. The spiral classifier according to claim 6, characterized in that: Triangular support frames are arranged on both sides of the base, and support rods are arranged on the triangular support frames along the midline. A plurality of positioning holes are arranged on the support rods, and cross bars are inserted into the two positioning holes at the same level, and the cross bars are in contact with the bottom end of the frame.
8. The spiral classifier according to claim 5, characterized in that : Nut pairs are respectively provided on both sides of the overflow trough, and a screw rod is connected to the nut pair. A gantry is provided at the tail of the trough body. The upper end of the screw rod passes through the gantry and is provided with a first bevel gear. A driving rod is rotatably provided on the gantry, and second bevel gears are respectively provided on both sides of the driving rod. The second bevel gear is meshed with the first bevel gear, and one end of the driving rod is connected to a driving member.
9. The spiral classifier according to claim 8, characterized in that: Guide rails are arranged on both sides of the tail end of the trough body, guide grooves are arranged on two opposite surfaces of the guide rails, and convex edges corresponding to the guide grooves are arranged on both sides of the contact surface between the overflow trough and the trough body.
10. The spiral classifier according to claim 9, characterized in that: The overflow trough is a rectangular trough structure with an open top, a discharge port is provided at the bottom of the overflow trough, the height of the contact surface between the overflow trough and the trough body is lower than the other three surfaces, and a sealing strip is provided on the contact surface between the overflow trough and the trough body.