V-shaped adjustable powder selection machine and regulation method

Abstract

The present invention relates to an adjustable V-shaped powder selection machine, comprising a V-shaped structure shell, the two ends of the top of the shell are respectively provided with an air supply port and a fine material collection port, the bottom of the shell is provided with a coarse material collection port, in the shell, it is provided with a dispersion plate, a gradation plate, and a regulating part is movably arranged on the inner wall near the gradation plate inside the shell; the regulating part comprises an obstacle plate, and the obstacle plate is movably connected to the inner wall of the shell. The present invention includes an obstacle plate in the fines outlet channel of the powder selection machine, which increases the accuracy of the V-shaped powder selection machine without increasing the energy consumption.An obstacle plate regulating device is also provided, which can adjust the position of the obstacle plate according to the production needs, so as to adjust the grading efficiency of the V-shaped powder selection machine.

Description

Title of invention: Adjustable V-shaped powder selection machine and regulating method Technical field

[0001] The present invention relates to the technical field of powder selection machine, more precisely to a V-shaped adjustable powder selection machine and a regulating method. State of the art

[0002] The V-shaped powder selection machine is one of the most widely used gas-solid separation equipment in industry, with the function of dispersing, drying and separating particles, and is mainly used in chemical, metallurgical, building materials and other industries. The V-shaped powder selection machine mainly relies on the dispersing plate and the grading plate to break and disperse particles, which has the characteristics of simple structure, convenient operation and high grading efficiency.

[0003] The particles are dispersed and flow under the action of gravity in the dispersion zone, and under the blowing of high-temperature and high-speed gas from the side, the fine particles change their trajectory toward the grading plate, and the coarse particles continue to flow with little impact, and then the coarse and fine particles are separated. The internal baffle plate of the V-shaped powder selection machine is divided into a grading plate and a dispersing plate. The raw materials are broken by the dispersing plate, and the grading plate is combined with the incoming material of the dispersing plate to sort the raw materials. The arrangement of the position of the grading plate affects the internal movement of the airflow of the V-shaped powder selection machine, which in turn affects the sorting effect of the particles.In order to improve the separation efficiency of the V-shaped powder selection machine and reduce the energy consumption, it is necessary to optimize the V-shaped powder selection machine.

[0004] Patent CN 213726964 U: The invention is to place a material receiving box on the lower side of the V-shaped powder selection machine, and a mounting plate and a strainer are arranged in the receiving box. This improves the separation efficiency of the V-shaped powder selection machine. The purpose of the invention is to increase the separation efficiency, and the working energy efficiency of the V-shaped powder selection machine is not optimized, which will lead to an increase in energy consumption. Patent CN 211385800 U: The invention adds diversion blocks inside the V-shaped powder selection machine, so that the speed of the airflow circulating between the diversion blocks will continue to increase, so that during the falling of the material to the expulsion, the filtering effect of the airflow will be continuously strengthened and the filtering effect of the material is improved. The invention is provided with a second air outlet and a buffer plate at the same time, which will strengthen the airflow inside the body, thereby improving the filtering of the airflow. However, the invention does not optimize the energy consumption of the baffle plate.Patent CN 219003335 U: The invention forms a dispersing part by installing a plurality of dispersing frames in the V-shaped powder selecting machine, and improves the dispersing function of the V-shaped powder selecting machine. However, this solution does not consider the impact of the distribution of the baffle plates on the energy consumption and the grading efficiency.

[0005] Most of the existing improvements are concentrated in realizing a single job of the V-shaped powder selection machine, and there is no major change in the structure and working process of the V-shaped powder selection machine. Although the additional bypass blocks can increase the grading efficiency of the V-shaped powder selection machine, it is difficult to increase the grading accuracy of powder selection. The increase of the filter screen can increase the grading accuracy of the V-shaped powder selection machine, but greatly increase the pressure drop of the V-shaped powder selection machine and thus increase the energy consumption.

[0006] Content of the invention

[0007] The objective of the present invention is to provide an adjustable V-shaped powder selection machine and a regulating method, to solve the problems mentioned in the prior art.

[0008] To achieve this objective, the present invention proposes the following technical solution:

[0009] A V-shaped adjustable powder selection machine, comprising a V-shaped structure shell, the two ends of the top of the shell are respectively provided with an air supply port and a fine material collection port, the bottom of the shell is provided with a coarse material collection port, characterized in that, in the shell, it is provided with a dispersion plate, a gradation plate, and a regulating part is movably arranged on the inner wall near the gradation plates inside the shell;

[0010] The regulating portion comprises an obstacle plate, and the obstacle plate is movably connected to the inner wall of the shell.

[0011] As a more advanced solution of the invention: the shell comprises an air inlet cylinder and an air outlet cylinder, the air inlet cylinder is obliquely connected to the air outlet cylinder to form a V-shaped structure, one side of the upper end of the shell near the air supply port is provided with a charging port, and the dispersion plate is located under the charging port.

[0012] As an even more advanced solution of the invention: it is equipped with several dispersion plates, it is equipped with several gradation plates, and the dispersion plates and the gradation plates are arranged obliquely relative to each other.

[0013] As an even more advanced solution of the invention: the obstacle plate is slidably connected to the inner wall of the shell in the airflow direction, and the obstacle plate is rotatably connected to the inner wall of the shell in the sliding direction.

[0014] As a further advanced solution of the invention: a sliding groove is formed in the shell, the sliding groove is arranged along the height direction of the shell, a sliding block is slidably connected in the sliding groove, the sliding block is connected to a sealing plate, and the obstacle plate is rotatably connected to the sealing plate at the top and bottom via a rotating shaft.

[0015] As an even more advanced solution of the invention: the lower end of the sliding block is connected to a telescopic cylinder to drive the rotation of the obstacle plate, and the piston end of the telescopic cylinder is rotatably connected to the obstacle plate.

[0016] As a further advanced solution of the invention: the outer wall of the shell is provided with a guide rail, the sliding block is slidably connected to the guide rail, the bottom plate of the shell is provided with a driving part for driving the sliding block to slide on the guide rail, the driving part comprises a threaded rod which is in threaded connection with the sliding block, the bottom plate of the shell is provided with a motor and the transmission shaft of the motor is powerfully connected to a main transmission rod, the main transmission rod is provided with a transmission gear, the bottom of the threaded rod is fixedly connected to a driven gear, and the driven gear is meshed with the transmission gear on the main transmission rod.

[0017] As an even more advanced solution of the invention: it is equipped with several sliding blocks, the inner side of each sliding block is rotatably connected an obstacle plate, and the sliding block is connected by a sealing plate.

[0018] A method for regulating a V-shaped adjustable powder selection machine, the material whose diameter is less than or equal to b is defined as a fine material, and the material whose diameter is greater than b is defined as a coarse material, and the regulating method comprises the following steps:

[0019] step 1, the gradation efficiency^ of the coarse material with a diameter greater than b is obtained at the fine material collection port;

[0020] step 2, the dimming efficiency q obtained in step 1 is compared with the regulation threshold, the angle of the obstacle plate is adjusted by the regulation part and step 1 is repeated; if l less than the dimming threshold, step 3 is executed;

[0021] step 3, complete the adjustment.

[0022] As an even more advanced solution of the invention: the dimming efficiency

[0023] [Math.l] 4» .mltecu 3« p&sràrÈ fias par»r lia s:s:ruisî âisxn&brs nia fsisî'tsi'üis: ।00^4 in us -certsi» diwaètiæ ; The regulation threshold includes a coarse regulation threshold m, a fine regulation threshold n;

[0024] Step 2 includes the following steps:

[0025] Step 2.1, judging whether the dimming efficiency q obtained in step 1 is greater than the coarse regulation threshold m, and if it is greater than the coarse regulation threshold m, the coarse regulation is performed by adjusting the height of the obstacle plate, and then step 1 is executed; if the coarse regulation threshold m is lower, step 2.2 is executed;

[0026] step 2.2, judging whether the dimming efficiency q obtained in step 1 is greater than the fine regulation threshold n, and if it is greater than the fine regulation threshold n, the fine regulation is performed by adjusting the angle of the obstacle plate, and then step 1 is executed; if the fine regulation threshold n is lower, step 3 is executed.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has improved the accuracy of the powder selection machine being provided with a baffle in the fine material discharge channel of the powder selection machine, without increasing the energy consumption, and is also equipped with the obstacle plate regulating equipment, and the position of the obstacle plate can be adjusted according to different production needs, then the grading efficiency of the V-shaped powder selection machine is adjusted. Description of the drawings

[0028] [Fig. 1] is a schematic diagram of the structure of the V-shaped powder selection machine in the present embodiment;

[0029] [Fig.2] is a diagram of the external structure of the regulating part of the present embodiment;

[0030] [Fig.3] is a diagram of the internal structure of the regulating part of the present embodiment;

[0031] [Fig.4] is a diagram of the structure of the driving part of the present embodiment;

[0032] [Fig.5] is the raw material particle distribution map of the V-shaped powder selection machine;

[0033] [Fig.6] is a comparative table of the on-site measurement of the dimming efficiency of the equipment with or without the obstacle plate;

[0034] [Fig.7] is a flowchart of the control method of the present embodiment;

[0035] [Fig.8] is a diagram of the position of the obstacle plate after the regulation of embodiment 1.

[0036] In the figures: 1 the air supply port, 2 the loading port, 3 the coarse material collection port, 4 the dispersion plates, 5 the gradation plates, 6 the fine material collection port, 7 the motor, 8 the main transmission rod, 9 the driven gear, 10 the screw rods, 11 the guide rails, 12 the sliding blocks, 13 the telescopic cylinder, 14 the obstacle plates, 15 the sealing plates, 16 the rotary shaft.

[0037] The specific embodiment

[0038] The technical solutions in the embodiments of the present invention will be clearly and fully described below in conjunction with the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without performing any creative work fall within the scope of protection of the present invention.

[0039] Referring to Figures 1-4, in the embodiment of the present invention, a V-shaped adjustable powder selection machine comprises a V-shaped structure shell, the two ends of the top of the shell are respectively equipped with an air supply port 1 and a fine material collection port 6, the bottom of the shell is provided with a coarse material collection port 2, a dispersion plate 4 and a grading plate 5 are arranged in the shell, the shell comprises an air inlet cylinder and an air outlet cylinder, the air inlet cylinder is obliquely connected to the air outlet cylinder to form a V-shaped structure, one side of the upper end of the shell close to the air supply port 1 is provided with a charging port 2, the dispersion plate 4 is positioned below the charging port 2, and it is equipped with several dispersion plates 4 and several grading plates 5, and the dispersion plates 4 and the grading plates 5 are obliquely arranged relative to each other.

[0040] A regulating portion is movably provided on the inner wall near the dimming plate 5 inside the shell, the regulating portion comprises an obstacle plate 14, and the obstacle plate 14 is movably connected to the inner wall of the shell, in the present embodiment, the obstacle plate 14 is slidably connected to the inner wall of the shell along the airflow direction, and the obstacle plate 14 is rotatably connected to the inner wall of the shell in the sliding direction, a sliding groove is formed in the shell, the sliding groove is provided along the height direction of the shell, a sliding block 12 is slidably connected in the sliding groove, and the sliding block 12 is connected to a sealing plate 15,and the obstacle plate 14 is rotatably connected to the sealing plate 15 and the sliding block 12 at the top and bottom via the rotating shaft 16, the lower end of the sliding block 12 is connected to a telescopic cylinder 13 which is used to drive the obstacle plate 14 to rotate, the piston end of the telescopic cylinder 13 is rotatably connected to the obstacle plate 14, the outer wall of the shell is provided with a guide rail 11, the sliding block 12 is slidably connected to the guide rail 11, the bottom plate of the shell is provided with a driving part for sliding the sliding block 12 on the guide rail 11, the driving part comprises a threaded rod 10 which is threaded with the sliding block 12, and the bottom plate of the shell is provided with a motor 7, The transmission shaft of the motor 7 is connected to the power supply with a rod of main transmission 8,and the rear end of the main transmission rod 8 has a transmission gear, as shown in [Fig.4], the transmission gear on the main transmission rod 8 which is connected to the output shaft of the motor 7, the bottom of the threaded rod 10 is fixedly connected to the driven gear 9, the driven gear 9 is fixedly connected to the threaded rod 10, then the main transmission rod 8 can be driven to rotate by the motor, the main transmission rod 8 drives the driven gear 9 to rotate, then the threaded rod 10 is driven to rotate by the driven gear 9. ,

[0041] It is equipped with several sliding blocks 12, the inner side of each sliding block 12 is rotatably connected an obstacle plate 14, and a sealing plate 15 is arranged on the sliding groove 15. The sealing plate is larger than the slot to ensure that no matter how the sliding block moves, the sealing plate can cover the slot and initially realize the sealing of powder particles. Then, the long groove opened in the shell is further equipped with a rubber bellows which is consistent with the shape of the long groove, and the bellows must be able to extend at least 50% of its length to achieve complete gas sealing.

[0042] A regulating method of the V-shaped adjustable powder selection machine defines that the material whose diameter is less than or equal to b is a fine material, and the material whose diameter is greater than b is a coarse material, and the grading efficiency is:

[0043] [Math.2] _.eetoîSæ «te iwîlte Sse «h cerîata diam&r® of jwdi'aîe of tWharg® as

[0044] In the present embodiment, the dimming efficiency is first defined:

[0045] [Math.3] ^ôriace de deœtsdrefisse jwr sa œrtas»dïamêtr® of ïj =---------:--------------------------------------------x Iü8% to pass a certain amount of time

[0046] As shown in Figures 5, 6 and 7 of the instructions, the flow field velocity of the V-shaped powder selection machine gradually increases from right to left at the outlet, and the particles affected by the flow field can be divided into two areas: the exhaust area with a particle size less than 80 pm and the exhaust area with a particle size of 200 to 600 pm. The use of a V-shaped powder selection machine hopes to collect as many raw material particles less than 80 pm as possible in the subdivision outlet, and reduce the raw material particles of more than 200 pm at the same time. The higher the grading efficiency of raw materials with particle size less than 80 pm, and the lower the grading efficiency of particle size greater than 200 pm, the higher the grading accuracy of the V-shaped powder selection machine.

[0047] Therefore, an obstacle plate is added to the side wall of the outlet to block the airflow in the exhaust area of ​​200-600 pm, so as to realize the screening of particles in this particle size range. According to the field measurement, the V-shaped powder selection machine with the addition of the obstacle plate can effectively reduce the grading efficiency of medium particles. and coarse (200-600pm) by about 50% while ensuring that the grading efficiency of fine particles remains unchanged, and realize the accurate screening of particles. At the same time, the overall pressure drop of the V-shaped powder selection machine remains basically unchanged.

[0048] The regulation threshold comprises a coarse regulation threshold m, a fine regulation threshold n. In this embodiment, the coarse regulation diameter range is 200 to 400 qm, the coarse regulation threshold is 20% and the fine regulation threshold is 10%, and the regulation method comprises the following steps:

[0049] Step 1, the gradation efficiency q of the coarse material with a diameter greater than b is obtained at the fine material collection port 6;

[0050] In step 1: the test V-shaped powder selection machine equipment cannot directly obtain the gradation efficiency q of the coarse material with a particle size larger than b under different working conditions in real time by means such as actual measurement. According to the definition formula of the gradation efficiency q , the present invention uses computational fluid dynamics software to realize accurate and real-time calculation of the gradation efficiency of the coarse material with a diameter larger than b of the obstacle plate 14 at a certain position.

[0051] Step 2, the dimming efficiency q obtained in step 1 is compared with the regulation threshold, then the angle of the obstacle plate 14 is adjusted through the regulation part and step 1 is repeated; if the dimming threshold is lower, step 3 is executed.

[0052] Step 2 includes the following steps:

[0053] Step 2.1, judging whether the dimming efficiency q obtained in step 1 is greater than the coarse regulation threshold m, if it is greater than the coarse regulation threshold m, the coarse regulation is performed by adjusting the height of the obstacle plate 14, then step 1 is executed; if the coarse regulation threshold m is lower, step 2.2 is executed.

[0054] Step 2.2, judging whether the dimming efficiency obtained q in step 1 is greater than the fine regulation threshold N, if it is greater than the fine regulation threshold n, the fine regulation is performed by adjusting the angle of the obstacle plate l4, then step 1 is executed; if the fine regulation threshold n is lower, step 3 is executed.

[0055] Step 3: Complete the adjustment.

[0056] Embodiment 1

[0057] For a kind of raw material granule with a density of 2786 kg / m3 and a d50 of 560pm, a 2500t / d type V-shaped powder separation equipment was used for powder separation, and the particle gradation efficiency of 300pm was controlled below 15%. The specific implementation is as follows:

[0058] (l)Without any regulation of the obstacle plate, the V-shaped powder selection machine is directly used, and the grading efficiency of 300pm particles is 35.76%.

[0059] (2)Gradually adjust the height of the obstacle plate, when the height of the obstacle plate is 4700mm from the upper outlet of the V-shaped powder selection machine, the V-shaped powder selection machine can achieve the grading efficiency of 300pm particles in 18.70%. At the same time, the grading efficiency of particles with a size less than 100pm was 98.22%.

[0060] (3)Based on (1), the gradation efficiency of 300pm particles can be reduced to 11.57% by rotating the obstacle plate clockwise by 7 degrees. At the same time, the gradation efficiency of particles smaller than 100pm was 97.3%.

[0061] As described in [Fig.8], the distance between the upper outlet of the V-shaped powder selection machine and the obstacle plate after adjustment is 4700 mm and the angle of the obstacle plate is 7 degrees.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention may be embodied in other concrete forms without departing from the spirit or essential characteristics of the present invention.

[0063] Thus, regardless of the aspects, the examples should be considered as examples and not as limiting. The scope of the present invention is delimited by the appended claims and not by the above description, so that it is intended to include all variations which fall within the meaning and scope of the equivalents of the claims. No figure number in the claims should be interpreted as limiting the subject matter of the relevant claims.

[0064] Furthermore, it should be understood that although this manuscript is described hereinafter in terms of application examples, it is not necessarily the case that each application example comprises an independent technical solution. This manner of proceeding in the description is only for clarification purposes, and persons skilled in the art should interpret the manuscript as a whole. The technical solutions of the examples may also be appropriately combined to form other application examples understandable by persons skilled in the art.

Claims

Claims

1. A V-shaped adjustable powder selection machine, comprising a V-shaped structure shell, the two ends of the top of the shell are respectively provided with an air supply port (1) and a fine material collection port (6), the bottom of the shell is provided with a coarse material collection port (2), characterized in that, in the shell, it is provided with a dispersion plate (4), a gradation plate (5), and a regulating part is movably arranged on the inner wall near the gradation plate (5) inside the shell; The regulating part comprises an obstacle plate (14), and the obstacle plate (14) is movably connected to the inner wall of the shell.

2. The V-shaped adjustable powder selection machine according to claim 1, wherein the shell comprises an air inlet cylinder and an air outlet cylinder, the air inlet cylinder is obliquely connected to the air outlet cylinder to form a V-shaped structure, one side of the upper end of the shell near the air supply port (1) is provided with a charging port (2), and the dispersion plate (4) is located below the charging port (2).

3. The V-shaped adjustable powder selection machine according to claim 1, wherein it is equipped with several dispersion plates (4), it is equipped with several gradation plates (5), and the dispersion plates (4) and the gradation plates (5) are arranged obliquely to each other.

4. The V-shaped adjustable powder selection machine according to claim 1, wherein the obstacle plate (14) is slidably connected to the inner wall of the shell in the airflow direction, and the obstacle plate (14) is rotatably connected to the inner wall of the shell in the sliding direction.

5. The V-shaped adjustable powder selection machine according to claim 4, wherein a sliding groove is formed in the shell, the sliding groove is arranged along the height direction of the shell, a sliding block (12) is slidably connected in the sliding groove, the sliding block (12) is connected to a sealing plate (15), and the obstacle plate (14) is rotatably connected to the sealing plate (15) at the top and bottom via a rotating shaft (16).

6. The V-shaped adjustable powder selection machine according to claim 5, wherein the lower end of the sliding block (12) is connected to a telescopic cylinder (13) to drive the rotation of the obstacle plate (14), and the piston end of the telescopic cylinder (13) is rotatably connected to the obstacle plate (14).

7. The V-shaped adjustable powder selection machine according to claim 5, wherein the outer wall of the shell is provided with a guide rail (11), the sliding block (12) is slidably connected to the guide rail (11), the bottom plate of the shell is provided with a driving part for driving the sliding block (12) to slide on the guide rail (11), the driving part comprises a threaded rod (10) which is in threaded connection with the sliding block (12), the bottom plate of the shell is provided with a motor (7) and the transmission shaft of the motor (7) is powerfully connected to a main transmission rod (8), the main transmission rod (8) is provided with a transmission gear, the bottom of the threaded rod (10) is fixedly connected to a driven gear (9), and the driven gear (9) is meshed with the transmission gear on the main transmission rod (8).

8. The V-shaped adjustable powder selection machine according to claim 5, wherein it is equipped with several sliding blocks (12), the inner side of each sliding block (12) is rotatably connected to an obstacle plate (14), and the sliding block (12) is connected by a sealing plate (15).

9. A method for regulating a V-shaped adjustable powder selection machine, wherein, it uses a V-shaped adjustable powder selection machine according to any one of claims 1 to 8, the material whose diameter is less than or equal to b is defined as a fine material, and the material whose diameter is greater than b is defined as a coarse material, and the regulating method comprises the following steps: step 1, the gradation efficiency q of the coarse material with a diameter greater than b is obtained at the fine material collection port (6); step 2, the dimming efficiency q obtained in step 1 is compared with the regulation threshold, the angle of the obstacle plate (14) is adjusted by the regulation part and step 1 is repeated; if l less than the dimming threshold, step 3 is executed; step 3, complete the adjustment.

10. A method for regulating a V-shaped adjustable powder selection machine according to claim 9, wherein the gradation efficiency [Math. 4] rj —--------------------------------------------L------X 100¾ ; The regulation threshold comprises a coarse regulation threshold m, a fine regulation threshold n; Step 2 comprises the following steps: Step 2.1, by judging whether the gradation efficiency q obtained in step 1 is greater than the coarse regulation threshold m, and if it is greater than the coarse regulation threshold m, the coarse regulation is performed by adjusting the height of the obstacle plate (14), then step 1 is executed; if the coarse regulation threshold m is lower, step 2.2 is executed; step 2.2, judging whether the dimming efficiency q obtained in step 1 is greater than the fine regulation threshold n, and if it is greater than the fine regulation threshold n, the fine regulation is performed by adjusting the angle of the obstacle plate (14), and then step 1 is executed; if the fine regulation threshold n is lower, step 3 is executed.

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