Screening equipment for molybdenum concentrate

Abstract

The invention relates to the technical field of ore screening, in particular to molybdenum concentrate screening equipment which comprises a screening box and two screens arranged on the inner wall of the screening box, the side face of the screening box is provided with a driving structure used for driving the screening box, and the two side faces of the screening box are each fixedly provided with two elastic supporting legs. Four transverse plates corresponding to the two screens are fixedly installed on the inner wall of the screening box, two reels are symmetrically arranged on the bottom faces of the transverse plates, and connecting ropes are arranged on the inner sides of the reels; before the anti-blocking bouncy ball is pulled up, the deformation assembly drives the four arc plates to gather together to form a sleeve, and when the bouncy ball passes through, the cleaning scraper made of the plastic material can flexibly scrape ore particles on the surface of the bouncy ball and penetrating into the bouncy ball, so that the problems of elasticity reduction, weight increase and the like caused by ore attachment are avoided, the situation that frequent replacement is needed due to failure of the bouncy ball is reduced, and the service life of the bouncy ball is prolonged. The maintenance cost and the downtime are reduced, and continuous and effective blockage prevention is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ore screening, in particular to a screening device for molybdenum concentrate. BACKGROUND

[0002] Ore screening is a key link in the field of mineral processing, which separates particles of different sizes by using the size difference of ore particles through specific equipment. The core purpose is to provide ore raw materials meeting the particle size requirements for subsequent beneficiation, smelting or application, and to achieve preliminary enrichment of useful minerals and removal of waste rock. Such equipment is not only used for ore screening, but also often used in green coal selection technology.

[0003] According to the search, a kind of ore screening machine is disclosed according to the announcement number CN111299140B, its structure includes underframe, support, outer spring, support, screening mechanism, support is vertically installed on the upper end of underframe, support is installed on the front of screening mechanism, outer spring is installed between support and support, screening mechanism is obliquely installed on the upper end of underframe, screening mechanism includes side plate, feed inlet, screening structure, upper discharge port, lower discharge port, conveying shaft, feed inlet is located in the upper end of side plate right, screening structure is installed between side plate, upper discharge port is obliquely installed on the left side of screening structure, lower discharge port is below upper discharge port, conveying shaft is evenly installed between side plate, screening port is arranged on the upper end of screening plate, so that ore can be sent out with vibration when being clamped inside, to prevent clogging and affect the screening speed;Activity structure is arranged inside the pipe body, which better sends out the ore clamped inside, prevents clogging during re-screening, and speeds up the screening speed of ore;However, the following problems still exist when the above screening device is used in actual use: When using the above screening device, in order to effectively alleviate the problem of screen clogging, a anti-blocking elastic ball matching the size of the screen is usually installed on the screening device. These anti-blocking elastic balls can play an important role in unblocking the screen and ensuring the continuous and stable operation of the screening operation due to their good elasticity. However, since the anti-blocking elastic ball is usually made of rubber or other materials with high elasticity, the hardness of such materials is relatively low. During the screening process, when small ore particles frequently contact and collide with the anti-blocking elastic ball during the intense movement of the screening device, the sharp corners are easily pierced into the elastic material inside the elastic ball. As the screening operation continues, more and more small ore particles will pierce and adhere to the surface of the elastic ball, which will not only cause the elasticity of the elastic ball to gradually decrease, but also weaken the impact force of the elastic ball on the screen, thereby affecting the anti-blocking effect.

[0004] Based on this, a screening device for molybdenum concentrate is disclosed. SUMMARY

[0005] To solve the problem of the elastic ball made of low-hardness elastic material being easily pierced and attached by small particles with sharp edges in the ore, which reduces the elasticity of the elastic ball, increases the weight, weakens the anti-blocking effect, increases the load of the device and energy consumption, even causes deformation, accelerates the wear of the device and the screen, shortens the service life, increases the maintenance and labor costs, and affects the production progress, the present application provides a screening device for molybdenum concentrate, which comprises a screening box and two screens arranged on the inner wall of the screening box, a driving structure is arranged on the side of the screening box for driving the screening box, two elastic legs are fixedly installed on the two sides of the screening box, four horizontal plates corresponding to the two screens are fixedly installed on the inner wall of the screening box, two reels are symmetrically arranged on the bottom surface of the horizontal plate, a connecting rope is arranged on the inner side of the reel, a anti-blocking elastic ball is fixedly installed at the bottom end of the connecting rope, a driving assembly is arranged on the bottom surface of the horizontal plate for driving the two reels, and two sets of containing assemblies corresponding to the two anti-blocking elastic balls are symmetrically arranged on the bottom surface of the horizontal plate. The driving assembly comprises a driving shaft arranged on the bottom surface of the horizontal plate, a transmission wheel is arranged at the end of the driving shaft, the reel is fixedly sleeved on the outer wall of the driving shaft, and an adjusting structure is arranged between the driving shaft and the transmission wheel. The containing assembly comprises a mounting plate fixedly installed on the bottom surface of the protection box, four arc plates are arranged on the bottom surface of the mounting plate, cleaning scrapers are fixedly installed on the inner wall of the arc plate, a connecting structure is arranged between the arc plate and the mounting plate, and a deformation assembly is arranged on the containing assembly for driving deformation.

[0006] Since the amount of ore processed by the screening device may be large, the ore on the screen within the range of the elastic ball may be blocked, and the elastic ball needs to be collected when cleaning; the bottom surface of the horizontal plate is fixedly installed with a protection box, the driving shaft is rotatably installed on the inner wall of the protection box, and the end of the driving shaft connected with the transmission wheel penetrates through the side of the protection box.

[0007] As a further improvement of the technical solution, the adjusting structure comprises a slot opened at one end of the driving shaft located outside the protection box, an adjusting screw is slidably installed on the inner wall of the slot through a sliding groove and a sliding block, a threaded sleeve is rotatably installed at the end of the driving shaft located outside the protection box, the threaded sleeve is screwed with the adjusting screw, and the end of the adjusting screw located outside the slot is fixedly connected with the transmission wheel.

[0008] On this basis, due to the different plugging conditions of the screen when screening different batches of ores, if the uniform pull-up and release frequency is adopted, the anti-blocking effect of the screen will be poor; the frequency adjusting assembly comprises a driving roller rotatably installed between the inner wall of the screening box and the protective box, a reciprocating lead screw is rotatably installed between the inner wall of the screening box and the protective box, and the reciprocating lead screw is located at the position between the driving roller and the transmission wheel, a guide rod corresponding to the reciprocating lead screw is fixedly installed between the inner wall of the screening box and the protective box, and a supporting circular plate is sleeved on the outer wall of the guide rod and the reciprocating lead screw, a transmission ring is rotatably sleeved on the outer wall of the supporting circular plate, and the outer wall of the transmission ring is attached to the outer walls of the transmission wheel and the driving roller.

[0009] As a further improvement of the technical solution, the end of the reciprocating lead screw and the end of the driving roller are fixedly installed with driving wheels with attached outer walls, the end of the reciprocating lead screw is fixedly installed with a transmission shaft, and the transmission shaft is drivingly connected with the output end of the driving structure through a driven wheel and a synchronous belt.

[0010] As a further improvement of the technical solution, the outer walls of the driving roller, the transmission ring, the transmission wheel and the driving wheel are provided with anti-skid patterns.

[0011] In another scheme, when the anti-blocking elastic ball is retracted, its outer surface may be pierced by small and sharp ores, so these ores need to be scraped off in time to avoid being embedded too deeply and being difficult to clean; the connecting structure comprises a connecting plate fixedly installed on the outer wall of the mounting plate, four guide grooves arranged in a ring array are formed in the bottom surface of the mounting plate, the arc plates are slidingly installed on the inner wall of the guide grooves through guide blocks, and springs are fixedly installed between the guide blocks and the inner wall of the guide grooves.

[0012] As a further improvement of the technical solution, the cleaning scraper is made of plastic material.

[0013] Since the arc plates need to be located at different positions to achieve different effects when the anti-blocking elastic ball is pulled up and released, the arc plates need to be driven; the deformation assembly comprises an electric push rod fixedly installed on the bottom surface of the connecting plate, a guide plate is fixedly installed on the bottom surface of the connecting plate, the outer walls of two arc plates away from the electric push rod among the four arc plates are fixedly installed with rope sleeves, the extension end of the electric push rod is fixedly installed with a pulling seat, a pulling rope is arranged on the inner side of the two rope sleeves, and the pulling end of the pulling rope is fixedly connected with the pulling seat twice through the guide plate, the extension end of the electric push rod is fixedly installed with a push rod, and the end of the push rod is fixedly installed with a push plate corresponding to the other two arc plates.

[0014] As a further improvement of the technical solution, the outer diameter of the pulling rope is at least smaller than the inner diameter of the rope sleeve.

[0015] Compared with the prior art, the present application has the following advantages: 1. In the molybdenum concentrate screening device, before pulling up the anti-blocking elastic ball, the deformation assembly drives four arc plates to gather into a sleeve, when the elastic ball passes, the plastic material cleaning scraper can flexibly scrape the surface and the embedded ore particles, which avoids the problems of elastic force reduction, weight increase and other problems caused by ore adhesion, reduces the frequent replacement due to the failure of the elastic ball, reduces the maintenance cost and downtime, and ensures the continuous and effective anti-blocking.

[0016] 2. In the molybdenum concentrate screening device, the position of the transmission wheel can be adjusted by rotating the threaded sleeve, which can change the time interval between pulling up and releasing the anti-blocking elastic ball. When the position of the transmission wheel between the frequency modulation components is changed, the time interval between the two driving of the anti-blocking elastic ball can be changed, and the time interval between the pulling up and releasing of the anti-blocking elastic ball can be changed. This can flexibly match the anti-blocking rhythm for different types of ore, avoid the problems of insufficient anti-blocking or excessive energy consumption caused by fixed frequency, and improve the adaptability of the screening device to complex working conditions and use scenarios.

[0017] 3. In the molybdenum concentrate screening device, the driving structure drives the transmission ring to move back and forth through the reciprocating screw, the driving roller and other components, only drives the transmission wheel when it is in contact, and cooperates with the arc plate gathering and resetting action of the deformation assembly to realize the connection of the pulling up, cleaning and releasing process. When pulling up, the arc plate gathers and cleans, and when releasing, the arc plate separates without interference, reducing manual intervention, avoiding the problem of equipment jam caused by asynchronous cleaning and driving, and ensuring continuous and stable screening operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure of the transverse plate of the present application Figure 1 Figure 3 It is a schematic diagram of the structure of the transverse plate of the present application Figure 1 Figure 4 It is a schematic diagram of the structure of the transverse plate of the present application Figure 2 Figure 5 It is a schematic diagram of the structure of the transverse plate of the present application Figure 4 Figure 6 It is a schematic diagram of the structure of the transverse plate of the present application Figure 7 It is a schematic diagram of the structure of the transverse plate of the present application Figure 8 It is a schematic diagram of the structure of the transverse plate of the present application Figure 9 It is a schematic diagram of the structure of the transverse plate of the present application

[0019] The meanings of the various labels in the figure are:​​​​ 1, screening box; 2, screen; 3, drive structure; 4, cross plate; 5, drive assembly; 6, frequency modulation assembly; 7, containing assembly; 8, deformation assembly; 9, reel; 10, connecting rope; 11, anti-blocking elastic ball; 12, elastic leg; 51, protection box; 52, drive shaft; 53, transmission wheel; 54, slot; 55, adjusting screw; 56, threaded sleeve; 61, drive roller; 62, reciprocating screw; 63, guide rod; 64, support disc; 65, transmission ring; 66, transmission shaft; 67, drive wheel; 71, mounting plate; 72, connecting plate; 73, guide slot; 74, arc plate; 75, spring; 76, cleaning scraper; 81, electric push rod; 82, guide plate; 83, rope sleeve; 84, pull rope; 85, pulling seat; 86, push rod; 87, push plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] The elastic balls on the existing screening device are mostly made of low-hardness elastic material, which is easy to be pierced and attached by small particles with sharp edges in the ore, which will reduce the elasticity and increase the weight of the elastic ball, weaken the anti-blocking effect, increase the load of the device and energy consumption, and even cause deformation, accelerate the wear of the elastic ball and the screen, shorten the service life, increase the maintenance and labor costs, and affect the production progress.

[0022] Therefore, the present application provides a screening device for molybdenum concentrate, as shown in Figures 1-9 The device includes a screening box 1 and two screens 2 arranged on the inner wall of the screening box 1. The side of the screening box 1 is provided with a drive structure 3 for driving the screening box 1. The two sides of the screening box 1 are each fixedly installed with two elastic legs 12. The inner wall of the screening box 1 is fixedly installed with four cross plates 4 corresponding to the two screens 2. The bottom surface of the cross plate 4 is symmetrically provided with two reels 9. The inner side of the reel 9 is provided with a connecting rope 10. The bottom end of the connecting rope 10 is fixedly installed with an anti-blocking elastic ball 11. The bottom surface of the cross plate 4 is provided with a drive assembly 5 for driving the two reels 9. The inner wall of the screening box 1 is provided with four groups of frequency modulation assemblies 6 corresponding to the drive assembly 5. The bottom surface of the cross plate 4 is symmetrically provided with two groups of containing assemblies 7 corresponding to the two anti-blocking elastic balls 11. The containing assembly 7 is provided with a deformation assembly 8 for driving deformation.

[0023] In work, the screening box 1 can be installed at the use position under the support of the elastic legs 12, when screening the ore, the ore can enter the inside of the screening box 1 through the feeding device, the driving structure 3 is opened, the screening box 1 is driven to vibrate under the action of the elastic legs 12, the ore in the screening box 1 can be screened through the screen 2 when vibrating, so as to realize the screening of the ore, and in the process of screening the ore, the reel 9 can be driven through the action of the frequency adjusting assembly 6 and the driving assembly 5, so that the reel 9 is wound and unwound, the connecting rope 10 pulls and releases the anti-blocking elastic ball 11, through the pulling and releasing of the anti-blocking elastic ball 11, the local blockage of the ore at the position of the anti-blocking elastic ball 11 can be effectively avoided, and the practicability of the anti-blocking elastic ball 11 is improved; the anti-blocking elastic ball 11 can be located on the screen 2 and vibrate with the screen 2 at different frequencies when the screen 2 vibrates, so as to vibrate the screen 2 and reduce the blockage of the screen 2 by the ore, and the containing assembly 7 can be gathered under the action of the deforming assembly 8 when the anti-blocking elastic ball 11 is pulled up, so as to store the anti-blocking elastic ball 11, and the containing assembly 7 can clean the surface of the anti-blocking elastic ball 11, scrape off the stone slag pierced into the outer wall of the anti-blocking elastic ball 11, and prolong the service life of the anti-blocking elastic ball 11.

[0024] Specifically, referring to Figure 2 、 Figure 4 and Figure 6 As shown, the amount of ore processed by the screening device can be large, so the ore on the screen 2 in the use range of the elastic ball can be blocked, and the elastic ball needs to be collected when cleaning; the driving assembly 5 includes a protection box 51 fixedly installed on the bottom surface of the horizontal plate 4, a driving shaft 52 is rotatably installed on the inner wall of the protection box 51, one end of the driving shaft 52 close to the driving structure 3 penetrates through the side surface of the protection box 51 and is provided with a slot 54, an adjusting screw 55 is slidably installed on the inner wall of the slot 54 through a sliding groove and a sliding block, a threaded sleeve 56 is rotatably installed on one end of the driving shaft 52 located outside the protection box 51, the threaded sleeve 56 is screwed with the adjusting screw 55, a transmission wheel 53 is fixedly installed on one end of the adjusting screw 55 located outside the slot 54, and the reel 9 is fixedly sleeved on the outer wall of the driving shaft 52.

[0025] When working, the frequency modulation assembly 6 can drive the transmission wheel 53, so that the drive shaft rod 52 rotates. When the drive shaft rod 52 rotates forward, the connecting rope 10 on the reel 9 can be wound to pull up the anti-blocking elastic ball 11. When the transmission wheel 53 is separated from the frequency modulation assembly 6, the deformation assembly 8 drives the containing assembly 7 to reset. Under the action of gravity, the anti-blocking elastic ball 11 pulls the reel 9 through the connecting rope 10, the drive shaft rod 52 reverses, and the anti-blocking elastic ball 11 can be released onto the screen 2 for use. The position of the transmission wheel 53 can be adjusted by rotating the threaded sleeve 56. When the threaded sleeve 56 rotates, the adjusting screw 55 can drive the adjusting screw 55 to slide through the sliding groove and the sliding block, thereby changing the position of the transmission wheel 53. When the transmission wheel 53 is located at different positions, the anti-blocking elastic ball 11 can be pulled up and released at different frequencies. For example, when the transmission wheel 53 is located near the end of the frequency modulation assembly 6 or at the middle position of the frequency modulation assembly 6, the frequency modulation assembly 6 can drive the transmission wheel 53 twice, but the interval time of the two driving times is different, and the time interval between the two times can be determined by the position of the transmission wheel 53, so as to increase the use range of the equipment.

[0026] Further, as shown in Figure 3 、 Figure 4 and Figure 8 , because the blocking situation of the screen 2 is different when different batches of ores are screened, if the same pull-up and release frequency is used, the anti-blocking effect of the screen 2 will be poor. The frequency modulation assembly 6 includes a drive roller 61 rotatably installed between the inner wall of the screening box 1 and the protective box 51. A reciprocating lead screw 62 is rotatably installed between the inner wall of the screening box 1 and the protective box 51, and the reciprocating lead screw 62 is located between the drive roller 61 and the transmission wheel 53. A guide rod 63 corresponding to the reciprocating lead screw 62 is fixedly installed between the inner wall of the screening box 1 and the protective box 51. A support circular plate 64 is sleeved on the outer wall of the guide rod 63 and the reciprocating lead screw 62. A transmission ring 65 is rotatably sleeved on the outer wall of the support circular plate 64. The outer wall of the transmission ring 65 is in contact with the outer walls of the transmission wheel 53 and the drive roller 61. Drive wheels 67 in contact with each other are fixedly installed on the ends of the reciprocating lead screw 62 and the drive roller 61. A transmission shaft 66 is fixedly installed on the end of the reciprocating lead screw 62, and the transmission shaft 66 is drivingly connected to the output end of the drive structure 3 through a driven wheel and a synchronous belt.

[0027] When the driving structure 3 is started, the transmission shaft 66 is driven to rotate by the driven wheel and the synchronous belt. Since the outer walls of the two driving wheels 67 are in close contact, the transmission shaft 66 drives the reciprocating lead screw 62 to rotate, which drives the driving roller 61 to rotate through the cooperation of the driving wheel 67. When the reciprocating lead screw 62 rotates, it drives the support circular plate 64 to reciprocate along the guide rod 63. During the reciprocating movement of the support circular plate 64, the outer wall of the transmission ring 65 is in close contact with the outer wall of the driving roller 61. Therefore, when the driving roller 61 rotates, it drives the transmission ring 65 to rotate. When the transmission ring 65 moves to the position of the transmission wheel 53, it drives the transmission wheel 53 to rotate, thereby driving the transmission wheel 53 and the driving shaft 52. When the transmission ring 65 is separated from the transmission wheel 53, the driving of the transmission wheel 53 is stopped.

[0028] Specifically, as shown in Figure 2 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 9 , when the anti-blocking elastic ball 11 is retracted, its outer surface may be inserted into small and sharp ore, which needs to be removed in time to avoid embedding too deep and inconvenient to clean. The containing assembly 7 includes a mounting plate 71 fixedly installed on the bottom surface of the protection box 51. The end of the connecting rope 10 is fixedly connected with the anti-blocking elastic ball 11 in sequence through the protection box 51, the mounting plate 71, and the anti-blocking elastic ball 11. The outer wall of the mounting plate 71 is fixedly installed with a connecting plate 72. Four guide grooves 73 arranged in a ring array are formed on the bottom surface of the mounting plate 71. The inner wall of the guide groove 73 is slidably installed with an arc plate 74 through a guide block. The guide block and the inner wall of the guide groove 73 are fixedly installed with a spring 75. The inner wall of the arc plate 74 is fixedly installed with a cleaning scraper 76 corresponding to the anti-blocking elastic ball 11. The cleaning scraper 76 is made of plastic material.

[0029] When the anti-blocking elastic ball 11 is pulled up, before being pulled up, the deforming assembly 8 is started to drive the arc plate 74, so that the four arc plates 74 slide along the guide groove 73 in the direction of gathering through the guide block. The four arc plates 74 can be gathered into a whole sleeve. During the process of the anti-blocking elastic ball 11 entering the four arc plates 74, the outer wall of the anti-blocking elastic ball 11 will contact the cleaning scraper 76. Since the cleaning scraper 76 is made of plastic material and has a certain flexibility, the anti-blocking elastic ball 11 can pass through the four cleaning scrapers 76, and in the process of passing through, the cleaning scraper 76 can clean the outer wall of the anti-blocking elastic ball 11, thereby realizing the cleaning of the inserted ore, so as to continue to be used. Before the anti-blocking elastic ball 11 is released, the deforming assembly 8 can be released from the limiting, and the four arc plates 74 can slide and reset in the direction of moving away from each other under the action of the spring 75, so that the cleaning scraper 76 does not affect the release of the anti-blocking elastic ball 11, so as to release and use the anti-blocking elastic ball 11.

[0030] Further, referring to Figure 7 and Figure 8 As the anti-blocking elastic ball 11 needs to be pulled up and released at different positions to achieve different effects, the arc plate 74 needs to be driven; the deformation assembly 8 comprises an electric push rod 81 fixedly installed on the bottom surface of the connecting plate 72, the bottom surface of the connecting plate 72 is fixedly installed with a guide plate 82, the outer walls of two arc plates 74 away from the electric push rod 81 among the four arc plates 74 are fixedly installed with rope sleeves 83, the telescopic end of the electric push rod 81 is fixedly installed with a pulling seat 85, the inner sides of the two rope sleeves 83 are provided with pulling ropes 84, and the pulling ends of the pulling ropes 84 are fixedly connected with the pulling seat 85 twice through the guide plate 82, the telescopic end of the electric push rod 81 is fixedly installed with a push rod 86, and the end of the push rod 86 is fixedly installed with a push plate 87 corresponding to the other two arc plates 74.

[0031] In work, when the arc plate 74 is driven, the electric push rod 81 can be turned on and elongated, and when the electric push rod 81 is turned on and elongated, the two arc plates 74 can be pushed by the push rod 86 and the push plate 87, so that the two arc plates 74 slide in the direction of gathering, and at the same time, the pulling rope 84 can be pulled by the pulling seat 85 when the electric push rod 81 is elongated, and the pulling rope 84 can be reversed after passing through the guide plate 82, so that the other two arc plates 74 can also move in the direction of gathering under the action of the pulling rope 84, and finally the four arc plates 74 can be gathered synchronously; when released, the electric push rod 81 is shortened, and the four arc plates 74 can be reset under the action of the spring 75.

[0032] In summary, the device can adjust the frequency of pulling up and releasing the anti-blocking elastic ball 11 through the cooperation of the frequency adjusting assembly 6 and the transmission wheel 53, and can be flexibly adapted to different types of ores to improve the screening applicability; at the same time, when the anti-blocking elastic ball 11 is pulled up, the deformation assembly 8 drives the arc plate 74 to gather to form a sleeve, and the plastic cleaning scraper 76 is used to clean the surface of the ball, effectively removing the embedded ore, ensuring the continuous use of the elastic ball and reducing the replacement frequency; in addition, the deformation assembly 8 realizes the gathering and resetting of the arc plate 74 through the electric push rod 81, the pulling rope 84, etc., which not only ensures the stability of the cleaning process, but also does not affect the release of the elastic ball, ensures the normal play of the anti-blocking function, reduces the maintenance cost and downtime, and improves the screening efficiency.

[0033] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0034] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. A screening device for molybdenum concentrate, comprising a screening box (1) and two screens (2) disposed on the inner wall of the screening box (1), wherein a driving structure (3) is provided on the side of the screening box (1), characterized in that: The inner wall of the screening box (1) is fixedly installed with four horizontal plates (4) corresponding to two screens (2) respectively. Two reels (9) are symmetrically arranged on the bottom surface of the horizontal plate (4). A connecting rope (10) is arranged on the inner side of the reel (9). An anti-clogging elastic ball (11) is fixedly installed at the bottom end of the connecting rope (10). A driving assembly (5) for driving the two reels (9) is arranged on the bottom surface of the horizontal plate (4). Two sets of receiving assemblies (7) corresponding to the two anti-clogging elastic balls (11) are symmetrically arranged on the bottom surface of the horizontal plate (4). Among them, the drive assembly (5) includes a drive shaft (52) set on the bottom surface of the horizontal plate (4), a transmission wheel (53) is set at the end of the drive shaft (52), the reel (9) is fixedly fitted on the outer wall of the drive shaft (52), an adjustment structure is set between the drive shaft (52) and the transmission wheel (53), and four sets of frequency tuning components (6) corresponding to the drive assembly (5) are set on the inner wall of the screening box (1). The receiving component (7) includes a mounting plate (71) fixedly installed on the bottom surface of the protective box (51). The bottom surface of the mounting plate (71) is provided with four arc plates (74). A cleaning scraper (76) is fixedly installed on the inner wall of the arc plates (74). A connection structure is provided between the arc plates (74) and the mounting plate (71). A deformation component (8) for driving deformation is provided on the receiving component (7).

2. The screening equipment for molybdenum concentrate according to claim 1, characterized in that: A protective box (51) is fixedly installed on the bottom surface of the horizontal plate (4). The drive shaft (52) is rotatably installed on the inner wall of the protective box (51), and one end of the drive shaft (52) connected to the transmission wheel (53) passes through the side of the protective box (51).

3. The screening equipment for molybdenum concentrate according to claim 2, characterized in that: The adjustment structure includes a slot (54) on one end of the drive shaft (52) located outside the protective box (51). An adjustment screw (55) is slidably installed on the inner wall of the slot (54) through a sliding groove and a slider. A threaded sleeve (56) is rotatably installed on one end of the drive shaft (52) located outside the protective box (51). The threaded sleeve (56) is screwed to the adjustment screw (55). One end of the adjustment screw (55) located outside the slot (54) is fixedly connected to the transmission wheel (53).

4. The screening equipment for molybdenum concentrate according to claim 1, characterized in that: The frequency modulation assembly (6) includes a drive roller (61) rotatably installed between the inner wall of the screening box (1) and the protective box (51). A reciprocating screw (62) is rotatably installed between the inner wall of the screening box (1) and the protective box (51), and the reciprocating screw (62) is located between the drive roller (61) and the transmission wheel (53). A guide rod (63) corresponding to the reciprocating screw (62) is fixedly installed between the inner wall of the screening box (1) and the protective box (51). A support circular plate (64) is fitted on the outer wall of the guide rod (63) and the reciprocating screw (62). A transmission ring (65) is rotatably fitted on the outer wall of the support circular plate (64). The outer wall of the transmission ring (65) is in contact with the outer wall of the transmission wheel (53) and the drive roller (61).

5. The screening equipment for molybdenum concentrate according to claim 4, characterized in that: The reciprocating screw (62) and the drive roller (61) are both fixedly mounted with drive wheels (67) whose outer walls are in contact with each other. The reciprocating screw (62) is fixedly mounted with a transmission shaft (66), and the transmission shaft (66) is connected to the output end of the drive structure (3) through a driven wheel and a synchronous belt.

6. The screening equipment for molybdenum concentrate according to claim 5, characterized in that: The outer walls of the drive roller (61), transmission ring (65), transmission wheel (53), and drive wheel (67) are all provided with anti-slip textures.

7. The screening equipment for molybdenum concentrate according to claim 1, characterized in that: The connection structure includes a connecting plate (72) fixedly installed on the outer wall of the mounting plate (71). The bottom surface of the mounting plate (71) is provided with four guide grooves (73) arranged in a ring array. The arc plate (74) is slidably installed on the inner wall of the guide groove (73) through a guide block. A spring (75) is fixedly installed between the guide block and the inner wall of the guide groove (73).

8. The screening equipment for molybdenum concentrate according to claim 7, characterized in that: The cleaning scraper (76) is made of plastic material.

9. The screening equipment for molybdenum concentrate according to claim 7, characterized in that: The deformable assembly (8) includes an electric push rod (81) fixedly installed on the bottom surface of the connecting plate (72). A guide plate (82) is fixedly installed on the bottom surface of the connecting plate (72). Rope loops (83) are fixedly installed on the outer walls of the two arc plates (74) that are away from the electric push rod (81) among the four arc plates (74). A pull seat (85) is fixedly installed on the telescopic end of the electric push rod (81). Pull ropes (84) are provided on the inner side of the two rope loops (83). The pull end of the pull rope (84) passes through the guide plate (82) twice and is fixedly connected to the pull seat (85). A push rod (86) is fixedly installed on the telescopic end of the electric push rod (81). A push plate (87) corresponding to the other two arc plates (74) is fixedly installed at the end of the push rod (86).

10. The screening equipment for molybdenum concentrate according to claim 9, characterized in that: The outer diameter of the pull rope (84) is at least smaller than the inner diameter of the rope loop (83).

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