Ceramic slurry separator, separation, adjustment and anti-blocking method

Abstract

The present application relates to a ceramic mud sand material mud stone separator, separation, adjustment and anti-blocking method, the mud stone separator is by frame, the lower part of frame several separation rollers, the lower part of separation roller from top to bottom in the middle below the adjacent separation roller powder gear mud blocker is set for separating the mud material on the material distribution gear to prevent mud material from blocking, the mud blocking block is protruded on the mud blocker opposite to the gap between the two material distribution gears, the hopper assembly, the lower hopper is set on the upper end of the frame by the material blocking device support, the material blocking device is composed of; wherein the lower discharge pipe of the lower hopper is set on the upper end of the mud blocker after passing through the frame, the mud blocker is fixedly arranged below the material distribution gear of the separation roller and is installed next to the material distribution gear, when the mud material adhered on the material distribution gear does not fall, the mud material is separated by the mud blocker; the material blocking device comprises a material breaking wheel, and the gear teeth of the material breaking wheel are engaged with the gear teeth of the separation roller. The present application can quickly crush, separate, screen, classify and store the mud material and stones in the mud sand material, and the screening does not block.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ceramics, and particularly relates to a mudstone separator for ceramic mud and sand materials, a separation, adjustment and anti-blocking method. BACKGROUND

[0002] The mud material for preparing ceramics has high water content, large viscosity, and is mixed with stones and sands of different sizes, and is in the form of large blocks. If the raw materials are directly added into a ball mill for grinding, the efficiency of the ball mill is seriously affected, the power consumption for grinding is increased, and the composition of the mud material in different batches is uneven, which poses a certain risk to the stability of ceramic raw material production. Therefore, the stones and sands in the mud material often need to be removed through crushing and screening pretreatment, so as to ensure the stability of the composition and quality of the mud material.

[0003] At present, the ceramic mud and sand material is generally separated in the following ways: the first way is to dry and crush the mud and sand material. The mud and sand material separated through drying and screening has stable performance, is widely used, and is simple. The mud and sand material can be directly used with other materials, but a drying device and a homogenizing device need to be additionally arranged, a large amount of energy is needed when soft materials are dried, and therefore the first way is basically not used due to large investment and high energy consumption. The second way is to use a mudstone separator to screen. The mud and sand material is crushed and sliced through an eccentric crushing or a scraper type slicing, and then is screened through a certain mesh screen. The second way is simple and convenient, but the mud and sand material is not easy to be crushed and stirred due to high water content, and is easy to be bonded on the equipment to cause blocking. In addition, some stones with low particles are mixed in the mud material, which is not easy to be screened and separated, and is not conducive to the stability of the composition of the raw material. The third way is to treat the mud and sand material through slurry preparation. The raw material is sent into a large-capacity slurry tank, and then is stirred uniformly by a stirrer, and then is used. The third way is relatively simple, and the mud and sand material can be prepared into slurry without drying or crushing, and the separation effect of the mud and sand material is good. However, the slurry is not suitable for long-distance transportation, and can only be digested locally. In addition, the slurry needs to be modified in the traditional raw material adding mode to be applied to the ceramic raw material preparation process, and is inconvenient to use, has a narrow use range, and is difficult to meet the existing requirements of ceramic tile production.

[0004] CN202221885124.9 discloses a screening device of a mud-stone separator, which aims to ensure the uniform thickness of mud-stone materials on the screening mechanism and provides a screening device of a mud-stone separator. The technical solution: the screening device of the mud-stone separator includes a rack 1, a feeding track 2 hinged at the top end of the rack 1, and a rotating mechanism 3 for driving the feeding track 2 to overturn in the vertical plane, a plurality of crushing rollers 4 arranged in the rack 1 in the inclined direction, a flattening roller 5 located above the crushing rollers 4 and close to the feeding track 2 in the rack 1, a driving mechanism 6 provided on the rack 1 for driving the flattening roller 5 and all the crushing rollers 4 to rotate, and the rotating direction of the flattening roller 5 is opposite to that of the crushing rollers 4. The driving mechanism 6 includes a belt pulley 61 fixedly sleeved on the end of the crushing roller 4, each two adjacent belt pulleys 61 are commonly sleeved with the same belt 62, the end of the flattening roller 5 and the end of the crushing roller 4 close to the flattening roller 5 are fixedly sleeved with a gear 63, the two gears 63 are meshed with each other, a motor 64 is installed on the rack 1, and the output shaft of the motor 64 is fixedly connected to the end of any crushing roller 4. The rotating mechanism 3 includes two electric cylinders 31 hinged to the rack 1, a support plate 32 is fixedly installed in the rack 1 and arranged horizontally, the bottom end of the electric cylinder 31 is hinged to the support plate 32, and the top end of the electric cylinder 31 is hinged to the lower surface of the feeding track 2. The disadvantages of the technology are that all the crushing rollers have the same speed, no speed difference is formed, the mud-stone separation efficiency is not high, the mud with high water content and high viscosity is easy to form blockage, which affects the mud-stone screening effect, the crushing rollers are fixedly installed, and the machine is still likely to be stuck and stopped when encountering large stones; in addition, the device has no perfect anti-blocking operation measures, and cannot classify and process the stones according to their size, which is not convenient for subsequent processes. SUMMARY

[0005] In view of the above-mentioned deficiencies of the prior art, the present application provides a mud-stone separator for ceramic mud-sand materials, which can quickly crush and separate mud and stones in mud-sand materials, has high separation efficiency, is not easy to block, is easy to operate, has wide applicability, and can classify and store the crushed and separated mud and stones.

[0006] The first technical solution of the present application is the mudstone separator of the ceramic mud sand material, which is characterized in that the mudstone separator is composed of a frame, a plurality of separation rollers arranged at the lower part of the frame, a mud baffle arranged at the lower part of the separation roller and located below the middle of the adjacent separation roller, a mud baffle protruding block arranged on the mud baffle and facing the gap between the two central separation gears, a hopper assembly, a lower hopper arranged on one side of the upper part of the frame, and a material blocking device arranged on the upper end of the frame; wherein the discharge pipe of the lower hopper is arranged on the upper end of the mud baffle through the frame, the mud baffle is fixedly arranged at the lower part of the separation gear of the separation roller and is arranged adjacent to the separation gear, and the mud baffle separates the mud material adhered to the separation gear when the mud material does not fall off; wherein the material blocking device comprises a material breaking wheel, and the teeth of the material breaking wheel are engaged with the teeth of the separation roller.

[0007] As a preferred embodiment, the material blocking device comprises a support, a first counterweight shaft arranged at the upper part of the support, a baffle arm pivotally connected to the first counterweight shaft and a second counterweight shaft parallel to the first counterweight shaft, a plurality of sawtooth-shaped material breaking wheels sleeved on the second counterweight shaft, a counterweight plate welded on the baffle arm and flush with the end surface of the baffle arm, and a spring connected between the top end pin of the support and the baffle arm.

[0008] As a preferred embodiment, the support of the material blocking device is in the shape of a door, and a hole is formed at the upper end of the support to support the first counterweight shaft, the combination of the baffle arm and the counterweight plate can rotate around the first counterweight shaft, and the baffle arm and the horizontal plane form an included angle of 10-45 degrees; and the material breaking wheel is provided with three.

[0009] As a preferred embodiment, the separation roller comprises a motor and a speed reducer arranged on the frame, a bearing seat arranged on both sides of the top of the frame, a driving shaft pivotally connected between the opposite bearing seats, a plurality of parallel separation gears coaxially arranged on the driving shaft, anti-blocking pins inserted into the wheel shafts on both sides of the separation gears in the radial direction, and a chain wheel and a transmission chain sleeved on the driving shaft adjacent to the end of the bearing seat away from the motor, so that the first separation roller rotates synchronously through the transmission chain and the chain wheel, and the size and the number of teeth of the transmission chain and the chain wheel are adjusted to realize the speed difference of the separation roller, so that the separation effect of the mud sand material is better; a proximity switch is welded on one side of the top of the frame adjacent to one of the bearing seats through a fixing support, which is used for detecting the rotation state of the transmission chain and the chain wheel, and a pulse signal is sent to the control system by the proximity switch every time the separation gear rotates one tooth; and the separation roller is provided with at least one level or more.

[0010] The second technical solution of the present application is a separation method of the ceramic mud sand material mudstone separator, which is characterized by comprising the following steps:

[0011] 1. System starts, sets the total flow of screening, the rotating speed of the first, second and third separation rollers, anti-blocking time and reverse time parameters on the man-machine interface;

[0012] 2. Press the start button, the rotating motor starts to rotate, drives the shaft through the speed reducer, and drives the shaft to rotate, the ceramic mud sand material containing stones falls into the first hopper through the belt conveying mode, and is sent to the upper part of the first separation roller through the first hopper;

[0013] 3. The mud material is crushed by the crushing wheel, falls between the separation gears of the separation roller, and then falls into the first hopper, and the mud material is conveyed to the storage bin for standby;

[0014] 4. The relatively fine stones in the mud sand material pass through the first and second separation rollers in turn, fall into the second hopper, and the second hopper is provided with a belt conveyor at the lower part to convey the fine stones to other storage bins for other purposes;

[0015] 5. The relatively coarse stones in the mud sand material pass through the first, second and third separation rollers in turn, fall into the third hopper, and the second hopper is provided with a belt conveyor at the lower part to convey the relatively coarse stones to other storage bins for other purposes.

[0016] The third technical solution of the present application is the adjusting method of the ceramic mud sand material stone separation machine, which is characterized by comprising the following steps:

[0017] 1. The mud sand material stone separation speed is adjusted by adjusting the total flow of the material on the man-machine interface, and the separation speed is faster when the total flow of the material is larger; the rotating speed of the first, second and third separation rollers is faster when the total flow of the material is larger;

[0018] 2. When the mud material in the form of a group cannot fall into the hopper naturally through the separation roller, the second counterweight plate shaft and the counterweight plate stop the movement of the first separation roller to the third separation roller, and the crushing wheel crushes the mud material in the form of a group into smaller groups, which then fall into the first hopper naturally.

[0019] The fourth technical solution of the present application is the anti-blocking method of the ceramic mud sand material stone separation machine, which is characterized by comprising the following steps:

[0020] 1. When the larger stones are blocked between the two separation rollers, i.e. in the gap between the separation gears, the separation gears are provided with anti-blocking nails in the left and right directions, the outer diameter of the anti-blocking nail is smaller than the effective sawtooth outer diameter of the separation gear, the anti-blocking nail moves with the separation gear to drive the larger stones to move a set distance and then be taken out by the separation gear, and the anti-blocking state is ended,

[0021] (2) with the movement of the first separation roller, the second separation roller and the third separation roller, the larger stones fall into different discharge hoppers; the distance between the second separation roller and the third separation roller is adjusted to 30-50 mm, so that small stones can pass through, and the distance between the third separation roller and the machine frame shell is more than 200 mm, so that large stones can pass through and fall into the third hopper.

[0022] The fifth technical solution of the present application is a method for preventing the ceramic mud sand material and stone separator from being blocked, which is characterized by comprising the following steps:

[0023] (1) when the separation roller is blocked by a large stone, if the large stone cannot be removed by the anti-blocking nails, the motor speed R1 will decrease, when the speed decreases to the set speed 600R / M, the PLC trigger signal delay T1 reaches, the proximity switch KA1 signal is stopped, the frequency converter is stopped, and the motor is stopped rotating forward;

[0024] (2) then the proximity switch KA2 is turned on, the frequency converter is reversed, the motor is also reversed, and after the delay T2, it is reset and continues to normally pass through the material;

[0025] (3) the speed detection generates a pulse signal by the proximity switch, the proximity switch detects the gear teeth installed on the transmission chain, the gear generates a fixed number of pulses per revolution, and the pulse signal is sent to the PLC, when the PLC does not detect the pulse alternation, after the delay set time T3, it is judged that the separation roller has been seriously blocked and cannot work, the PLC instructs the motor to stop rotating and sends a warning to the staff for further processing.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] (1) the ceramic mud sand material and stone separator and the separation method disclosed by the present application can crush and separate the ceramic mud sand material by using the material blocking device and the separation roller, and automatically classify and store the screened mud and stones, the separation efficiency is high, the screening effect is good, it can be applied to the separation and processing of ceramic mud sand materials with different water contents, the application range is wide, and the continuous production requirements of the ceramic raw material industry are met.

[0028] (2) the present application sets multiple sets of separation rollers, the distance between the separation rollers is arranged from small to large according to the process requirements, the multiple material separation gears on the separation rollers rapidly crush and screen the mud sand material, the crushed mud enters the first hopper and is transported and stored, and the stones in the mud continue to pass through different separation rollers and are classified and stored in the corresponding hoppers according to the diameter of the stones, the mud and stone screening effect is controllable, and the processing efficiency of the ceramic raw material is improved.

[0029] 4. The present application sets up a baffle at the left and right direction of the distributing gear, and installs a mud baffle at the lower part of the distributing gear, which can push out the stones blocked between the separating rollers and the mud adhered to the gear during the rotation of the separating rollers, and also can make the separating rollers run reversely by setting the system, so as to effectively prevent the mud and sand from blocking, and realize the high efficient, fast, stable and continuous screening effect of the ceramic mud and sand. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the front view of the mud and stone separator of the ceramic mud and sand material of the present application;

[0031] Figure 2 is the right view of the mud and stone separator of the ceramic mud and sand material of the present application;

[0032] Figure 3 is the top view of the mud and stone separator of the ceramic mud and sand material of the present application;

[0033] Figure 4 is the structure diagram of the material baffle of the mud and stone separator of the ceramic mud and sand material of the present application;

[0034] Figure 5 is the top view of the material baffle of the mud and stone separator of the ceramic mud and sand material of the present application;

[0035] Figure 6 is the structure diagram of the distributing gear of the mud and stone separator of the ceramic mud and sand material of the present application;

[0036] Figure 7 is the structure diagram of the anti-blocking nail of the mud and stone separator of the ceramic mud and sand material of the present application;

[0037] Figure 8 is the electric control schematic diagram of the anti-blocking material of the mud and stone separator of the ceramic mud and sand material of the present application.

[0038] Main component symbol explanation:

[0039] DETAILED DESCRIPTION

[0040] The present application will be further described in detail below with reference to the accompanying drawings:

[0041] Please refer to Figures 1-2As shown in the drawings, the ceramic slurry and sand separator of the present application is composed of a frame 1, a lower hopper 2, a material blocking device 3, a separating roller 4, a mud blocking device 5 and a hopper 6. The frame 1 is welded from a square metal cylinder. The lower hopper 2 is installed on the upper part of the frame 1. The hopper 6 is composed of a first hopper 61, a second hopper 62 and a third hopper 63, which are installed in sequence on the lower part of the frame 1. The separating roller 4 is composed of a first separating roller 491, a second separating roller 492 and a third separating roller 493, which are installed above the hopper 6 and correspond to the first hopper 61, the second hopper 62 and the third hopper 63 in sequence. The material blocking device 3 is arranged at the front end of the separating roller 4. The mud blocking device 5 is installed below the separating gear 45 of the separating roller 4 and is adjacent to the separating gear. The mud blocking device 5 is provided with a mud blocking protrusion 51, which is opposite to the gap between the two separating gears.

[0042] As shown in the drawings, Figure 4 and Figure 5 As shown in the drawings, the material blocking device 3 is composed of a material blocking device support 31, a first counterweight plate shaft 321, a second counterweight plate shaft 322, a pin 33, a spring 34, a baffle arm 35, a counterweight plate 36 and a material breaking wheel 37. The material blocking device 3 is installed on the upper end of the frame 1 through the material blocking device support 31. The material blocking device support 31 is provided with the first counterweight plate shaft 321. The material breaking wheel 37 in the shape of a sawtooth is installed on the second counterweight plate shaft 322. The first counterweight plate shaft 321 of the material blocking device support 31 is connected with the second counterweight plate shaft 322 of the material breaking wheel 37 through the baffle arm 35. The counterweight plate 36 is welded on the baffle arm 35, and the end surface of the counterweight plate 36 is flush with the baffle arm 35. One end of the spring 34 is fixed on the upper end of the material blocking device support 31 through the pin 33, and the other end is fixed on the connecting baffle arm 35 through the pin 33. The baffle arm 35 and the combination can be pulled upwards, so that the baffle arm 35 forms an angle of 10-30 degrees with the horizontal plane. There are three material breaking wheels 37, which are coaxial with the baffle arm 35.

[0043] The material blocking device support 31 is in the shape of a door, and a hole is formed on the upper end to support the left and right ends of the first counterweight plate shaft 321. The combination of the baffle arm 35 and the counterweight plate 36 can rotate around the first counterweight plate shaft 321.

[0044] As shown in the drawings, Figure 3 , Figure 6 and Figure 7As shown, the rack 1 is provided with multiple sets of separation rollers 4, which are composed of motor 41, speed reducer 42, shaft coupling 43, bearing seat 44, distribution gear 45, transmission chain 46, drive shaft 47, proximity switch 48. The motor 41 and the speed reducer 42 are installed on the rack 1. The variable frequency drive drags the motor 41 to adjust the speed individually. The speed reducer 42 rotates the drive shaft 47 through the shaft coupling 43. The bearing seat 44 is installed on the top of the rack 1 on both sides and connected together through the drive shaft 47. The drive shaft 47 is provided with multiple distribution gears 45. The bearing seat 44 is provided with the transmission chain 46 and the sprocket at one end. The transmission chain 46 and the sprocket drive the separation rollers to rotate synchronously. The size and the number of teeth of the transmission chain 46 and the sprocket can be adjusted to make the separation rollers rotate at different speeds, so that the separation effect of the mud and sand is better. The distribution gear 45 is in the shape of a sawtooth. A anti-blocking nail 451 is welded at each end of the distribution gear 45. The proximity switch 48 is installed beside one of the bearing seats 44 on the top of the rack 1 to detect the rotation state of the transmission chain 46 and the sprocket. The proximity switch 48 generates a pulse signal and sends it to the control system every time the distribution gear 45 rotates one tooth. The proximity switch 48 is welded on the side of the rack 1 through the fixed support.

[0045] The separation rollers 4 are provided with three sets of separation rollers 491, 492 and 493, which are installed on the top of the rack 1. The distribution gear 45 is composed of multiple series and coaxial with the shaft 48.

[0046] Please refer to Figures 1-8 The separation method of the ceramic mud and sand material stone separator is shown in the following steps.

[0047] (1) The system is started. The total flow of screening, the rotation speed of the first separation roller 491, the second separation roller 492 and the third separation roller 493, the anti-blocking time, the reverse rotation time parameters are set on the man-machine interface. The start button is pressed, and the separation roller starts to rotate.

[0048] (2) The motor 41 starts to rotate. The shaft coupling 43 is rotated after being decelerated by the speed reducer 42. Multiple distribution gears 45 also rotate. The ceramic mud and sand material containing stones is dropped into the lower hopper 2 by the belt conveying and other methods, and is sent to the upper part of the first separation roller 491 through the lower hopper 2.

[0049] (3) The mud material is crushed by the crushing wheel 37, falls between the distribution gears 45 of the separation roller, and then falls into the first hopper 61. The first hopper 61 is provided with a belt conveyor at the lower part to convey the mud material to the storage bin for standby.

[0050] (4) The finer stones in the mud and sand material fall into the second hopper 62 through the first separation roller 491 and the second separation roller 492 in turn. The second hopper 62 is provided with a belt conveyor at the lower part to convey the small stones to other storage bins for other purposes.

[0051] (5) The coarser stones in the mud and sand material pass through the first separating roller 491, the second separating roller 492 and the third separating roller 493 in sequence and fall into the third hopper 63. A belt conveyor is installed at the bottom of the third hopper 63 to transport the coarser stones to other silos for storage and other uses.

[0052] Adjustment method for ceramic mud and sand separator: including the following steps:

[0053] The total feed flow rate can be adjusted via the human-machine interface to control the separation speed of mud, sand and gravel. The larger the total feed flow rate, the faster the separation speed. The larger the total feed flow rate, the faster the rotation speed of the first separation roller 491, the second separation roller 492 and the third separation roller 493.

[0054] The baffle 3 is fixed to the bracket 31 by the spring 34. The baffle arm 35 is at an angle of 20 to 45 degrees to the horizontal plane. When a clump of mud cannot fall naturally into the hopper through the separating roller, it is blocked by the second counterweight plate shaft 322 and the counterweight plate as the first separating roller 491 moves to the third separating roller 493, so that it cannot move to the third separating roller 493. At the same time, the crushing wheel 37 breaks the clump of mud into smaller mud clumps, which then fall naturally into the first hopper 61.

[0055] The first method for preventing material blockage involves the separation rollers. When larger stones become stuck between the two separation rollers, they are actually blocked in the gap between the distribution gears 45. Each distribution gear 45 has an anti-blocking pin 451 positioned to the left and right. The outer diameter of the anti-blocking pin 451 is smaller than the effective serration outer diameter of the distribution gear 45. The anti-blocking pin 451 moves in a circular motion with the distribution gear 45, moving the larger stones up and down a certain distance, making them easier to remove from the blockage. Then, with the movement of the first separation roller 491, the second separation roller 492, and the third separation roller 493, the larger stones fall into different hoppers. The adjustable distance between the second separation roller 492 and the third separation roller 493 is 30-50mm to facilitate the passage of smaller stones. The distance between the third separation roller and the frame housing of the 493 is more than 200mm to facilitate the passage of larger stones and their falling into the third hopper.

[0056] Please see Figure 8The second method of preventing blocking is shown. When the separating roller is stuck by a large stone, if the first method does not work, the motor 41 speed R1 will be reduced, when the speed is reduced to the set speed 600R / M, the PLC trigger signal delay T1, when T1 time to stop KA1 signal, make the frequency converter stop, the motor 41 stop positive rotation, then the proximity switch KA2 is turned on, the frequency converter is reversed, the motor 41 is also reversed, and after delay T2, it is reset and continues to normally pass the material; The speed detection is the pulse signal generated by the proximity switch 48. The proximity switch 48 detects the gear teeth installed on the transmission chain 46. The gear generates a fixed number of pulses per revolution. This pulse signal is sent to the PLC, which is converted by the program to calculate the shaft rotation speed, unit R / M; When the PLC does not detect the alternating change of the pulse, after a certain time T3, it is judged that the separating roller has been seriously blocked and cannot work. The motor 41 stops rotating, and the PLC sends a warning to the staff for further processing.

[0057] The third method of preventing blocking is shown. The material stopper 3 is adjusted. The mud stopper 3 is fixed below the separating roller 4 and is installed next to the separating roller 45. When the mud on the separating roller 45 does not fall off, it is separated by the mud stopper 5.

[0058] The above is only the preferred embodiment of the present application. Any equivalent changes and modifications made within the scope of the claims of the present application shall be covered by the claims of the present application.

Claims

1. A method for preventing material blockage in a ceramic slurry and stone separator, comprising a ceramic slurry and stone separator, the separator comprising a frame, a plurality of separating rollers arranged at the lower part of the frame, a mud baffle arranged at the lower part of the separating rollers and below the adjacent separating gear, a mud baffle protrusion arranged opposite the gap of the separating gear, a hopper assembly, a lower hopper arranged at the upper part of the frame, and a material blocking device mounted on the upper end of the frame through a support; the lower hopper discharge pipe passes through the frame and extends above the mud baffle, the mud baffle is fixedly arranged at the lower part of the separating gear and closely arranged with the separating gear; the material blocking device comprises a material breaking wheel, the teeth of the material breaking wheel are engaged with the teeth of the separating gear; the separating roller comprises a motor and a speed reducer mounted on the frame, a bearing block mounted on the top of the frame on both sides, and a drive shaft pivotally connected between the opposite bearing blocks, a plurality of parallel separating gears coaxially arranged on the drive shaft, anti-blocking nails radially inserted into the wheel shafts on both sides of the separating gears, and the outer diameter of the anti-blocking nails is smaller than the outer diameter of the effective sawtooth of the separating gear; the speed reducer rotates the drive shaft through a coupling, the chain wheel and the transmission chain are respectively sleeved on the drive shaft adjacent to the end of the bearing block away from the motor, the first separating roller is synchronously rotated through the transmission chain and the chain wheel, the size and the number of teeth of the transmission chain and the chain wheel are adjusted to realize the speed difference of different separating rollers, the proximity switch is welded on the bearing block beside the fixed support on the top of one side of the frame, which is used to detect the rotating state of the transmission chain and the chain wheel, the proximity switch generates a pulse signal for every tooth of the separating gear, which is sent to the PLC, and the rotating speed of the shaft is converted through the program conversion; The anti-blocking method comprises the following steps:

1. Adjust the total flow of the discharged material through the man-machine interface, and adjust the speed of the mud and sand separation; 2. When the larger stones are blocked between the two separation rollers, that is, in the gap between the material distribution gear, after the separation roller is stuck by the large stones, the anti-blocking nails in the left and right directions of the material distribution gear, the outer diameter of the anti-blocking nail is smaller than the effective sawtooth outer diameter of the material distribution gear, the anti-blocking nail follows the material distribution gear to make a circular motion, and the larger stones are driven up and down by a set distance and then taken out by the material distribution gear; 3. When the separation roller is stuck by the large stones, the anti-blocking nails in step 2 cannot solve the anti-blocking problem, at this time, the motor speed R1 is reduced, when the speed is reduced to the set speed 600R / M, the PLC triggers the signal delay T1, when the T1 time arrives, the proximity switch KA1 signal is stopped, the frequency converter is stopped, and the motor is stopped rotating forward; Then the proximity switch KA2 is turned on, the frequency converter is reversed, the motor is also reversed, and after the delay T2, it is reset and continues to normally pass the material; 4. When the PLC does not detect the alternating change of the pulse, after the delay time T3 is set, it is judged that the separation roller has been seriously blocked and cannot work, the PLC instructs the motor to stop rotating and sends a warning to the staff for further processing.

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