Lifting control system of double-spiral classifier

Abstract

The utility model relates to a lifting control system of a double-spiral classifier. According to the lifting control system of the double-spiral classifier, a support is installed at the tail end of a machine groove, a base is installed on the support, a transmission assembly is installed on the base, and a motor is connected with the transmission assembly through a speed reducer; the transmission gear is rotatably installed on the base and meshed with the transmission assembly, a center through hole of the transmission gear is provided with threads, the lead screw penetrates through the base and the transmission gear to form a lead screw structure, and the lower end of the lead screw is connected with the underwater connecting assembly; a connecting rod and a lifting rod are installed at the top of the lead screw, a blocking piece is installed at the bottom of the lifting rod, a distance sensor is installed below the blocking piece, and the lifting height of the lead screw is detected through the distance sensor. According to the scheme, the motor is matched with the lead screw and the transmission gear, electric lifting control is carried out on the screw, the lifting speed of the screw is increased, and detection of the lifting height of the lead screw is achieved by installing the connecting rod, the lifting rod and the blocking piece on the lead screw and matching with the distance sensor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spiral classifier control, in particular to a double-spiral classifier lifting control system. TECHNICAL BACKGROUND

[0002] The double-spiral classifier is one of the ore dressing equipment. The spiral classifier is a kind of equipment for mechanical classification by means of the principle that the sedimentation speed of solid particles in liquid is different. It can filter the material ground in the mill, and the coarse material is rotated into the mill inlet by the spiral blade, and the filtered fine material is discharged from the overflow pipe. The double-spiral classifier is widely used in ore dressing plants to match with ball mills, to circulate and separate the sand, or to be used in gravity ore dressing plants to classify the sand and fine mud, and to be used in the metal ore dressing process to classify the particle size of the ore slurry, and to be used in the washing operation to remove mud and water.

[0003] When the double-spiral classifier stops working, in order to avoid the solid in the ore slurry from pressing the spiral to cause overload operation, and to meet the needs of maintenance work, the spiral must be lifted out of the tank so that most of the spiral is away from the ore slurry, and the spiral needs to be lowered to the working position when the classifier works.

[0004] However, the current lifting device of the double-spiral classifier is mainly manually operated, and the lifting of the spiral is controlled by a hand wheel and a lead screw assembly. The current double-spiral classifier does not have a limiting device, so that the spiral cannot be lowered to the position, which affects the classification effect of the material, or the spiral is lowered too much, which causes the hollow shaft of the spiral to be broken due to overload. In addition, different particle sizes of the material require the spiral to work at different heights, and the current lifting device cannot accurately control the height of the spiral, which needs to be adjusted constantly, consumes time and effort, and affects the efficiency of ore dressing.

[0005] Therefore, it is necessary to design an electric double-spiral classifier lifting device with a limiting and distance measuring function, which can automatically control the lifting height of the spiral while electrically controlling the lifting of the spiral. CONTENT OF THE NEW TYPE

[0006] In order to solve or partially solve the problems in the related art, the present application provides a double-spiral classifier lifting control system, which aims to solve the problem of poor operability of the lifting device of the double-spiral classifier.

[0007] The present application provides a double-spiral classifier lifting control system, which comprises:

[0008] The tank, the spiral, and the lifting device are installed at the end of the spiral.

[0009] The lifting device comprises a motor, a lead screw, a transmission gear, a support, a lifting rod, a speed reducer, a transmission assembly, a base, a connecting rod, a baffle, a distance sensor, and an underwater connecting assembly.

[0010] The support is installed at both sides of the end of the machine groove, the base is installed at the top of the support, the transmission assembly is installed on the base, the transmission assembly is connected with the output shaft of the speed reducer, the motor is installed on the speed reducer, and the output shaft of the motor is connected with the input shaft of the speed reducer.

[0011] The transmission gear is rotatably installed on the base, the transmission gear is engaged with the transmission assembly, a thread matched with the lead screw is arranged in the center through hole of the transmission gear, the lead screw passes through the base and the transmission gear to form a lead screw structure, and the lower end of the lead screw is connected with the underwater connecting assembly.

[0012] The connecting rod is installed at the top of the lead screw, the lifting rod is connected to the other end of the connecting rod, the baffle is installed at the bottom of the lifting rod, the distance sensor is installed on the corresponding base below the baffle, the lifting height of the lead screw is detected through the distance sensor, and feedback is fed to the control system of the double-spiral classifier.

[0013] Optionally, in some embodiments, the double-spiral classifier lifting control system further comprises:

[0014] The limiting table and the mounting plate;

[0015] The mounting plate is installed on the corresponding base below the baffle, the limiting table is installed on the mounting plate, and the limiting table is provided with a through hole;

[0016] The distance sensor is installed on the mounting plate, the detection head of the distance sensor passes through the through hole of the limiting table, and the top of the detection head of the distance sensor is flush with the upper surface of the limiting table.

[0017] Optionally, in some embodiments, the transmission assembly is provided with a transmission gear pair and a transmission rod, the upper end of the transmission rod is connected with the output shaft of the speed reducer, and the transmission gear pair is installed on the transmission rod and engaged with the transmission gear.

[0018] Optionally, in some embodiments, the underwater connecting assembly comprises:

[0019] The lifting rod, the universal joint, the forked hanger, the underwater bearing and the hanging ear;

[0020] The lifting rod is connected with the lower end of the lead screw, the lower end of the lifting rod is connected with the universal joint, the universal joint is installed on the forked hanger, and the lower end of the forked hanger is rotatably installed on the hanging ears at both sides of the underwater bearing;

[0021] The main shaft of the screw is installed on the underwater bearing.

[0022] Optionally, in some embodiments, a bearing is arranged between the transmission gear and the base, the transmission gear is connected with the inner ring of the bearing, and the outer ring of the bearing is fixed on the base, so as to realize the rotation of the transmission gear.

[0023] Optionally, in some embodiments, the double-spiral classifier lifting control system further comprises:

[0024] Auxiliary fixing device

[0025] The auxiliary fixing device comprises a support rod and a collar, the support rod is installed on the mounting plate, the collar is installed on the top of the support rod, the lifting rod passes through the collar, and the offset of the connecting rod and the lifting rod is blocked, so that the distance sensor always faces the baffle.

[0026] Optionally, in some embodiments, two sets of lifting devices are arranged and installed on the two screw ends respectively, and are used for lifting or lowering the screw from the machine groove or adjusting the height of the screw.

[0027] The technical scheme provided in the application can have the following beneficial effects:

[0028] The motor is matched with the screw rod and the transmission gear to electrically control the lifting of the screw, the lifting speed of the screw is effectively improved, the connecting rod, the lifting rod and the baffle are installed on the screw rod, and the lifting height of the screw rod is detected in cooperation with the distance sensor, the detection result is fed back to the control system of the double-screw classifier, the control system controls the forward and reverse rotation and the starting time of the motor, the lifting height of the screw is accurately controlled, and the beneficiation efficiency of the double-screw classifier is improved.

[0029] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description of exemplary embodiments of the present application taken in conjunction with the accompanying drawings, in which like reference characters generally refer to the same parts throughout the different views of the drawings.

[0031] Figure 1 is a structural schematic diagram of the lifting control system of the double-screw classifier shown in the embodiments of the application;

[0032] Figure 2 is a structural schematic diagram of the lifting device of the lifting control system of the double-screw classifier shown in the embodiments of the application;

[0033] Figure 3 is a connection schematic diagram of the underwater bearing of the lifting control system of the double-screw classifier shown in the embodiments of the application.

[0034] Reference signs: 1-machine groove, 2-screw, 3-motor, 4-screw rod, 5-transmission gear, 6-lifting rod, 7-support, 8-lifting rod, 9-reducer, 10-transmission assembly, 11-base, 12-connecting rod, 13-baffle, 14-distance sensor, 15-limiting table, 16-mounting plate, 17-universal joint, 18-forked lifting frame, 19-underwater bearing, 20-hanging ear, 21-auxiliary fixing device. DETAILED DESCRIPTION

[0035] Embodiments of the present application will be described in more detail with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0036] It should be understood that, although the terms "first", "second", "third", etc. can be used in this application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0037] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] Unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] When the double screw classifier stops working, in order to avoid the solid in the slurry from depositing and pressing the screw, causing overload operation, and the need for maintenance work, the screw must be lifted out of the tank to make most of the screw away from the slurry, and the screw needs to be lowered to the working position when the classifier is working. However, the current lifting device of the double screw classifier is mainly manually operated, and the screw is lifted and lowered through the hand wheel and screw rod assembly. The current double screw classifier does not set a limiting device, so that the screw cannot be lowered to the position, which makes the material classification effect poor, or the screw is lowered too much, which makes the hollow main shaft of the screw broken due to overload. And different particle size materials need the screw to work at different heights, but the current lifting device cannot accurately control the height of the screw, and needs to be adjusted constantly, which consumes time and effort and affects the efficiency of mineral processing.

[0040] To solve the above problems, the embodiment of the present application provides a double screw classifier lifting control system, which can control the screw to be lifted and lowered by the motor, the screw rod and the transmission gear, effectively improve the lifting speed of the screw, install the connecting rod, the lifting rod and the baffle on the screw rod, cooperate with the distance sensor to detect the lifting height of the screw rod, and feed back to the control system of the double screw classifier. The control system controls the forward and reverse rotation and starting time of the motor to realize accurate control of the lifting height of the screw, and improves the efficiency of the double screw classifier.

[0041] The technical scheme of the embodiment of the present application is described in detail below with reference to the drawings.

[0042] Figure 1 It is the structure diagram of the double screw classifier lifting control system shown in the embodiment of the present application.

[0043] Referring to Figure 1 A double screw classifier lifting control system, comprising:

[0044] A tank 1, a screw 2 and a lifting device;

[0045] The lifting device is provided with two groups, which are respectively installed at the ends of the two screws 2, and is used for lifting or lowering the screw 2 from the tank 1 or adjusting the height of the screw 2.

[0046] The lifting device comprises a motor 3, a lead screw 4, a transmission gear 5, a support 7, a lifting rod 8, a speed reducer 9, a transmission assembly 10, a base 11, a connecting rod 12, a baffle 13, a distance sensor 14, a limiting table 15, a mounting plate 16, an underwater connecting assembly and an auxiliary fixing device 21. The support 7 is bolted and installed at the two sides of the end of the machine groove 1, the base 11 is bolted and installed at the top of the support 7, the transmission assembly 10 is installed on the base 11, the transmission assembly 10 is connected with the output shaft of the speed reducer 9, the transmission assembly 10 is provided with a transmission gear pair and a transmission rod, the upper end of the transmission rod is connected with the output shaft of the speed reducer 9, and the transmission gear pair is installed on the transmission rod. The motor 3 is installed on the speed reducer 9, the output shaft of the motor 3 is connected with the input shaft of the speed reducer 9, and the rotating speed of the output shaft of the motor 3 is transmitted to the transmission assembly 10 after being reduced by the speed reducer 9.

[0047] The transmission gear 5 is rotatably installed on the base 11, a bearing is arranged between the transmission gear 5 and the base 11, the transmission gear 5 is connected with the inner ring of the bearing, the outer ring of the bearing is fixed on the base 11, and the rotation of the transmission gear 5 is realized. The transmission gear 5 is engaged with the transmission gear pair of the transmission assembly 10, and the transmission gear 5 is rotated by the transmission assembly 10. A thread matched with the lead screw 4 is arranged in the central through hole of the transmission gear 5, the upper end of the lead screw 4 passes through the base 11 and the transmission gear 5 to form a lead screw structure, and the lower end of the lead screw 4 is connected with the underwater connecting assembly. The rotation of the transmission gear 5 drives the lead screw 4 to ascend and descend under the action of the thread, so that the lifting or lowering of the underwater connecting assembly is realized.

[0048] The connecting rod 12 is movably installed at the top of the lead screw 4, the other end of the connecting rod 12 is fixedly connected with the top of the lifting rod 8, and the bottom of the lifting rod is welded with the baffle 13. The distance sensor 14, the limiting table 15 and the mounting plate 16 are installed below the baffle 13, the mounting plate 16 is installed on the corresponding base 11 below the baffle 13, the limiting table 15 is installed on the mounting plate 16, the limiting table 15 is provided with a through hole, the distance sensor 14 is installed on the mounting plate 16, the detection head of the distance sensor 14 passes through the through hole of the limiting table 15, the top of the detection head of the distance sensor 14 is flush with the upper surface of the limiting table 15, the displacement of the baffle 13 and the lifting rod 8 is detected by the distance sensor 14, so as to represent the lifting height of the lead screw 4, and the lifting distance of the spiral 2 is obtained. The distance sensor 14 and the motor 3 are connected with the electric control system of the double-spiral grading machine, the electric control system controls the start-stop and forward-reverse rotation of the motor 3 according to the displacement feedback of the distance sensor 14, and the lifting control of the spiral 2 is realized.

[0049] The auxiliary fixing device 21 is installed on the mounting plate 16, the auxiliary fixing device 21 comprises a support rod and a sleeve ring, the support rod is welded on the mounting plate 16, the sleeve ring is installed at the top of the support rod, the lifting rod 8 passes through the sleeve ring, the offset of the connecting rod 12 and the lifting rod 8 is blocked, and the distance sensor 14 always faces the baffle 13.

[0050] The underwater connecting assembly comprises a lifting rod 6, a universal joint 17, a forked hanger 18, an underwater bearing 19 and a hanging ear 20. The lifting rod 6 is connected with the lower end of the screw rod 4, the lower end of the lifting rod 6 is connected with the universal joint 17, the universal joint 17 is arranged on the forked hanger 18, the lower end of the forked hanger 18 is rotatably arranged on the hanging ears 20 arranged on the two sides of the underwater bearing 19, and the main shaft of the screw 2 is arranged on the underwater bearing 19.

[0051] The above has described the embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical application or improvement of the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A lifting control system for a double-spiral grading machine, comprising a trough (1) and a spiral (2), characterized in that, Also includes: A lifting device is installed on the end of the screw (2); The lifting device includes a motor (3), a lead screw (4), a transmission gear (5), a bracket (7), a lifting rod (8), a reducer (9), a transmission assembly (10), a base (11), a connecting rod (12), a baffle (13), a distance sensor (14), and an underwater connection assembly; The bracket (7) is installed on both sides of the end of the slot (1), the base (11) is installed on the top of the bracket (7), the transmission component (10) is installed on the base (11), the transmission component (10) is connected to the output shaft of the reducer (9), the motor (3) is installed on the reducer (9), and the output shaft of the motor (3) is connected to the input shaft of the reducer (9). The transmission gear (5) is rotatably mounted on the base (11). The transmission gear (5) meshes with the transmission assembly (10). The transmission gear (5) has a thread in the center through hole that matches the lead screw (4). The upper end of the lead screw (4) passes through the base (11) and the transmission gear (5) to form a lead screw structure. The lower end of the lead screw (4) is connected to the underwater connection assembly. A connecting rod (12) is installed on the top of the lead screw (4), and a lifting rod (8) is connected to the other end of the connecting rod (12). A baffle (13) is installed at the bottom of the lifting rod, and a distance sensor (14) is installed on the corresponding base (11) below the baffle (13). The lifting height of the lead screw (4) is detected by the distance sensor (14) and fed back to the control system of the double spiral classifier.

2. The lifting control system for the double-helix classifier according to claim 1, characterized in that, Also includes: Limiting platform (15) and mounting plate (16); The mounting plate (16) is installed on the base (11) corresponding to the baffle (13), and the limiting platform (15) is installed on the mounting plate (16). The limiting platform (15) is provided with a through hole. The distance sensor (14) is mounted on the mounting plate (16). The detection head of the distance sensor (14) passes through the through hole of the limiting stage (15), and the top of the detection head of the distance sensor (14) is flush with the upper surface of the limiting stage (15).

3. The lifting control system for the double-helix classifier according to claim 1, characterized in that: The transmission assembly (10) is equipped with a transmission gear pair and a transmission rod. The upper end of the transmission rod is connected to the output shaft of the reducer (9). The transmission gear pair is installed on the transmission rod and meshes with the transmission gear (5).

4. The lifting control system for the double-helix classifier according to claim 1, characterized in that: The underwater connection assembly includes: Lifting rod (6), universal joint (17), fork-type jack (18), underwater bearing (19) and lug (20); The lifting rod (6) is connected to the lower end of the lead screw (4). The lower end of the lifting rod (6) is connected to the universal joint (17). The universal joint (17) is installed on the fork-type hanger (18). The lower end of the fork-type hanger (18) is rotatably installed on the lugs (20) on both sides of the underwater bearing (19). The main shaft of the spiral (2) is mounted on an underwater bearing (19).

5. The lifting control system for the double-helix classifier according to claim 1, characterized in that: A bearing is provided between the transmission gear (5) and the base (11). The transmission gear (5) is connected to the inner ring of the bearing, and the outer ring of the bearing is fixed on the base (11) to realize the rotation of the transmission gear (5).

6. The lifting control system for the double-helix classifier according to claim 1 or 2, characterized in that, Also includes: Auxiliary fixing device (21); The auxiliary fixing device (21) includes a support rod and a collar. The support rod is mounted on the mounting plate (16), and the collar is mounted on the top of the support rod. The lifting rod (8) passes through the collar, blocking the connection rod (12) and the lifting rod (8) from shifting, so that the distance sensor (14) is always facing the baffle (13).

7. The lifting control system for the double-helix classifier according to claim 1, characterized in that: The lifting device is provided in two sets, which are respectively installed on the ends of the two spirals (2) for lifting the spirals (2) from the machine slot (1) or adjusting the height of the spirals (2).

Images