Screening device for ground phosphate rock

Abstract

The utility model relates to the technical field of screening devices, and discloses a ground phosphate rock screening device which comprises a frame body, a material returning barrel, a material conveying pipe, a crushing and grinding box and a material guiding frame, one side of the top end of the frame body is communicated with the crushing and grinding box, the bottom end of the frame body is communicated with the material guiding frame, the end portion of the material returning barrel is respectively communicated with the material conveying pipe and the frame body, and the material guiding frame is communicated with the material conveying pipe. The material conveying pipe is fixedly connected between the crushing and grinding box and the material returning barrel and is communicated with the crushing and grinding box and the material returning barrel, a centrifugal screening mechanism is arranged at one end of the frame body, the other end of the frame body is communicated with an automatic feeding circulating assembly, primary crushing is conducted through the crushing and grinding roller, materials are conveyed to the centrifugal screening mechanism through the inclined material conveying pipe, and then a centrifugal motor drives a rotating main shaft to rotate. The spiral blade is used for dispersing ground phosphate rock, multi-stage grading is achieved through the variable-aperture screen, meanwhile, the servo motor controls the auger blade to achieve automatic feeding circulation, and the problems that manual reverse screening is low in efficiency, uneven in screening and limited in screening quality are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screening device, specifically is a kind of phosphate rock powder screening device. BACKGROUND

[0002] In the field of phosphate rock deep processing, phosphate rock powder is converted into fine particles after being processed by crushing, grinding and other processes, and it is a key raw material for manufacturing phosphate fertilizer, phosphate and other phosphorus chemical products. However, phosphate ore contains materials of different particle sizes, which need to be effectively separated by screening technology to meet the needs of different purposes.

[0003] The existing patent with the publication number CN218945595U discloses a low-grade phosphate rock powder screening device, which includes a screening cylinder, a vibration motor, a hollow tube, a servo motor and other components. The servo motor drives the hollow tube to rotate, and the crushing knife and the scattering rod are used to pre-scatter the phosphate rock powder. The throwing disc and the cleaning brush are uniformly distributed and timely clean the screening net, improving the screening efficiency and the quality of phosphate rock powder. However, this scheme requires the operator to manually re-screen the screened phosphate rock particles, which consumes a lot of working time and results in low work efficiency.

[0004] In view of the above-mentioned related technology, the present application provides a phosphate rock powder screening device that can eliminate the drawbacks of existing devices. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of phosphate rock powder screening device, using the device to work, to solve the problems of low efficiency, uneven screening and limited screening quality of manual re-screening.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of phosphate rock powder screening device including frame body, return material cylinder, material conveying pipe, broken mill box and guide frame, the top end side of the frame body is connected with broken mill box, the bottom end of the frame body is connected with guide frame, the end part of the return material cylinder is respectively communicated with material conveying pipe and frame body, the material conveying pipe is fixedly connected between broken mill box and return material cylinder and is mutually communicated, one end of the frame body is equipped with centrifugal screening mechanism, the other end of the frame body is communicated with automatic feeding circulation assembly.

[0007] The centrifugal screening mechanism comprises a centrifugal motor, a rotating main shaft, a spiral blade, a linkage shaft rod and a horizontal cylindrical screen, the centrifugal motor is fixedly arranged on the outer wall of the end part of the frame body, one end of the rotating main shaft is fixedly connected with the output shaft of the centrifugal motor, the other end of the rotating main shaft is fixedly connected with the linkage shaft rod, the linkage shaft rod is clamped with the horizontal cylindrical screen, the horizontal cylindrical screen is arranged with screen hole sizes in the length direction, the screen hole sizes gradually increase from the feeding end to the discharging end, and the rotating main shaft is fixedly provided with the spiral blade.

[0008] Preferably, the automatic feeding and circulating assembly comprises a servo motor, a transmission shaft and an auger blade, the servo motor is fixedly arranged in the middle part of the top end of the return cylinder, the output shaft of the servo motor is fixedly connected with the transmission shaft, and the transmission shaft is fixedly provided with the auger blade.

[0009] Preferably, a plurality of crushing and grinding rollers are arranged in the crushing and grinding box.

[0010] Preferably, the material conveying pipe is arranged between the crushing and grinding box and the return cylinder in a tilted mode.

[0011] Preferably, a discharging bevel is arranged at the communication part between the frame body and the return cylinder.

[0012] Preferably, the return cylinder is a cylinder structure with an outer square and an inner circle.

[0013] Preferably, the frame body and the horizontal cylindrical screen are connected through a support plate frame.

[0014] Compared with the prior art, the phosphorite powder screening device has the following beneficial effects:

[0015] 1. The phosphorite powder screening device provided by the utility model realizes the grading screening of phosphorite powder by utilizing the centrifugal motor to drive the rotating main shaft, cooperating with the spiral blade and the horizontal cylindrical screen, the screen hole sizes are designed according to the action range of the centrifugal force, the material is effectively separated according to the particle size, the screening efficiency and precision are improved, the automatic separation and collection mechanism not only optimizes the production process, reduces the equipment downtime, reduces the material waste, improves the utilization efficiency of resources, enhances the stability and reliability of production.

[0016] 2. The phosphorite powder screening device provided by the utility model realizes the uniform and continuous feeding by the auger blade driven by the servo motor, avoids the blocking and uneven phenomenon in the screening process, ensures the stability and high efficiency of the screening process, the design reduces the manual intervention, reduces the labor intensity, and improves the automation level of the screening operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 is a top view of the present application;

[0019] Figure 3 is a disassembled structural schematic view of the centrifugal screening mechanism of the present application;

[0020] Figure 4 is a detailed structural schematic view of A of the present application;

[0021] Figure 5 is a detailed structural schematic view of B of the present application;

[0022] Figure 6 is a sectional structural schematic view of the centrifugal screening mechanism of the present application;

[0023] Figure 7 is a structural schematic view of the automatic feeding and circulating assembly of the present application.

[0024] In the figure: 100, frame body; 200, material returning cylinder; 101, centrifugal motor; 102, rotating main shaft; 103, helical blade; 104, linkage shaft rod; 105, horizontal cylindrical screen; 201, servo motor; 202, transmission shaft; 203, auger blade; 300, material conveying pipe; 400, crushing mill box; 500, material guiding frame; 600, support plate frame. DETAILED DESCRIPTION

[0025] 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, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] In order to further understand the content of the present application, the present application will be described in detail with reference to the drawings.

[0027] In combination with Figures 1-7The utility model provides a kind of phosphorite powder screening device, including frame body 100, back material cylinder 200, material pipe 300, broken mill box 400 and material guide frame 500, the top end side of the frame body 100 is connected with broken mill box 400, is used to preliminary broken phosphorite, facilitate subsequent screening, the broken mill box 400 is equipped with multiple broken mill compression roller, can effectively preliminary broken phosphorite, reduce the influence of large block material to screening effect, improve screening efficiency, the bottom of the frame body 100 is connected with material guide frame 500, for guiding and collecting the material after screening, facilitate subsequent processing or transportation, the end outer wall of the frame body 100 away from broken mill box 400 is fixedly connected with back material cylinder 200, for recycling material that does not meet the requirement, screening or processing again, the communication of the frame body 100 and back material cylinder 200 is equipped with a slope to facilitate guiding, back material cylinder 200 is the cylinder structure of outer square inner circle, increase the flow space of material in cylinder, help to improve the fluidity of material, reduce the jamming phenomenon in screening process, the end of back material cylinder 200 is connected with material pipe 300 and frame body 100 respectively, material pipe 300 is fixedly connected between broken mill box 400 and back material cylinder 200 and is mutually communicated, ensure that material is continuously conveyed from broken mill to screening, material pipe 300 is obliquely arranged between broken mill box 400 and back material cylinder 200, help phosphorite powder to flow into back material cylinder 200 from broken mill box 400 smoothly, reduce material jamming and accumulation, guarantee the continuity of screening process, one end of the frame body 100 is equipped with centrifugal screening mechanism, the other end of the frame body 100 is connected with automatic feeding circulation assembly;

[0028] The centrifugal screening mechanism includes a centrifugal motor 101, a rotating main shaft 102, a spiral blade 103, a linkage shaft rod 104, and a horizontal cylindrical screen 105. The centrifugal motor 101 is fixedly arranged on the outer wall of the end of the frame body 100, ensuring the stability of the driving force of the screening mechanism. One end of the rotating main shaft 102 is fixedly connected with the output shaft of the centrifugal motor 101. The other end of the rotating main shaft 102 is fixedly connected with the linkage shaft rod 104, realizing the synchronous movement of the main shaft and the screening component. The linkage shaft rod 104 is clamped with the horizontal cylindrical screen 105, facilitating the installation and replacement of the screen. The horizontal cylindrical screen 105 is graded in terms of screen size along the length direction. The screen size gradually increases from the inlet end to the outlet end. Through the arrangement of different screen sizes, different particle sizes of materials are effectively separated, improving the screening precision. The rotating main shaft 102 is fixedly provided with the spiral blade 103, which is used to uniformly disperse and push the phosphorite powder to the screen.

[0029] The automatic feeding circulating assembly comprises a servo motor 201, a transmission shaft 202 and auger blades 203, the servo motor 201 is fixedly arranged in the middle part of the top end of the material returning cylinder 200, the transmission shaft 202 is fixedly connected to the output shaft of the servo motor 201, and the auger blades 203 are fixedly arranged on the transmission shaft 202.

[0030] The frame body 100 and the horizontal cylindrical screen 105 are connected through the support plate frame 600, so that a stable support structure is formed, and the stability and screening precision of the screening process are ensured.

[0031] Working principle: the device preliminarily crushes the phosphate ore through the crushing roller in the crushing box 400, then the material is conveyed to the centrifugal screening mechanism through the inclined conveying pipe 300, the centrifugal motor 101 drives the rotating shaft 102 to rotate, the spiral blade 103 uniformly disperses the phosphate ore powder and screens the phosphate ore powder along the horizontal cylindrical screen 105, the screen hole size of the screen 105 gradually increases from the feeding end to the discharging end, so that multi-stage classification of the material is realized, and then the servo motor 201 controls the rotation of the auger blades 203 on the transmission shaft 202, so that the automatic feeding and circulating screening of the phosphate ore powder are realized.

[0032] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or device.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A phosphate rock powder screening device, comprising a frame (100), a return material cylinder (200), a feed pipe (300), a crushing and grinding box (400) and a material guide frame (500), wherein the top side of the frame (100) is connected to the crushing and grinding box (400), and the bottom end of the frame (100) is connected to the material guide frame (500), and the return material cylinder (200) is fixedly connected to the outer wall of the end of the frame (100) away from the crushing and grinding box (400), and the ends of the return material cylinder (200) are respectively connected to the feed pipe (300) and the frame (100), and the feed pipe (300) is fixedly connected between the crushing and grinding box (400) and the return material cylinder (200) and are connected to each other, characterized in that: One end of the frame (100) is provided with a centrifugal screening mechanism, and the other end of the frame (100) is connected to an automatic feeding circulation component; The centrifugal screening mechanism comprises a centrifugal motor (101), a rotating main shaft (102), a spiral blade (103), a linkage shaft (104) and a horizontal cylindrical screen (105). The centrifugal motor (101) is fixedly arranged on the outer wall of the end of the frame (100). One end of the rotating main shaft (102) is fixedly connected to the output shaft of the centrifugal motor (101). The other end of the rotating main shaft (102) is fixedly connected to the linkage shaft (104). The horizontal cylindrical screen (105) is clamped on the linkage shaft (104). The horizontal cylindrical screen (105) has sieve hole sizes arranged in stages along the length direction, and the sieve hole size gradually increases from the feed end to the discharge end. The spiral blade (103) is fixedly provided on the rotating main shaft (102).

2. The phosphate rock powder screening device according to claim 1, characterized in that: The automatic feeding circulation assembly comprises a servo motor (201), a transmission shaft (202) and an auger blade (203); the servo motor (201) is fixedly arranged at the middle of the top end of the return barrel (200); the transmission shaft (202) is fixedly connected to the output shaft of the servo motor (201); and the auger blade (203) is fixedly arranged on the transmission shaft (202).

3. The phosphate rock powder screening device according to claim 1, characterized in that: A plurality of crushing rollers are provided in the crushing and grinding box (400).

4. The phosphate rock powder screening device according to claim 1, characterized in that: The material delivery pipe (300) is arranged obliquely between the crushing box (400) and the return drum (200).

5. The phosphate rock powder screening device according to claim 1, characterized in that: A material discharge groove is provided at the connection point between the frame (100) and the return barrel (200).

6. The phosphate rock powder screening device according to claim 1, characterized in that: The return cylinder (200) is a cylindrical structure with a square outer surface and a round inner surface.

7. The phosphate rock powder screening device according to claim 1, characterized in that: The frame (100) and the horizontal cylindrical screen (105) are connected via a support frame (600).

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