CN107051861A - A kind of material screening collection device detected based on sample preparation - Google Patents

Abstract

The present invention relates to universal machine, it is used for the fields such as food, coal, medicinal material, specifically related to a kind of novel linear vibratory sieve and corresponding supporting hopper, shortage and the deficiencies in the prior art of the present invention for the current screening plant dedicated for sample preparation, can be to coal dust there is provided one kind, flour, medicinal powder etc. carries out the novel linear screen device and supporting sample collection device efficiently accurately sieved, solves screening insufficient；Screening efficiency is low；The sample preparation time is long；The problems such as screening plant is heavy, with being easy to carry, screening is quick, and screening is accurate, is simple to manufacture, the advantages of easy to operate.

Description

A material screening and collection device based on sample preparation and detection

technical field

The invention relates to a material screening and collecting device based on sample preparation and detection, which belongs to the technical field of food, coal and medicinal material processing.

Background technique

With the continuous development of social economy, on the one hand, in order to establish an energy-saving social development model, the industry needs to efficiently develop and utilize mineral resources, such as coal mines, so it is very important to carry out convenient, fast and accurate sample preparation and testing necessary. On the other hand, with the continuous improvement of people's living standards, there is a higher pursuit of quality of life, especially in the fields of food safety and drug safety, so it is of great significance to sample preparation and testing of the above products. Screening equipment is an indispensable equipment in the sample preparation process, and the accuracy of the screening results directly determines the reliability of the test results. However, there is still a lack of equipment specifically for material sample preparation and screening. Most of the existing sample preparation equipment is bulky, not suitable for portability, and has high manufacturing costs, resulting in slow sample preparation and incomplete screening, which indirectly leads to inaccurate test results, and the screening efficiency of the current equipment still needs to be improved. Therefore, it is very necessary to design a device specially used for material sample preparation and screening.

There are three main types of screening devices currently in use:

(1) Fixed sieve

There are two types of fixed sieves: fixed sieve and bar sieve. The sieve holes are generally square or round, and the bar-shaped sieve holes are generally sieve slots; the angle of the screen surface is generally between 25 degrees and 85 degrees; the working part is fixed, and the materials are sieved by sliding along the working surface. point. Fixed grid screen is one of the most widely used mineral processing plants, and is generally used for pre-screening before coarse crushing or medium crushing. It is simple in structure and convenient to manufacture. Without power consumption, the ore can be directly unloaded onto the screen surface. The main disadvantages are low productivity and low screening efficiency, generally only 50-60%.

(2) Vibrating screen

The vibrating screen structure consists of four parts, high-frequency vibration motor, first-level fixed grid screen and second-level fixed grid screen, vibration spring and casing. The inclination of the sieve surface is inversely proportional to the screening rate, the greater the inclination of the sieve surface, the faster the flow rate. Vibrating sieve has an absolute advantage in all screening equipment due to its simple structure, large processing capacity, and reliable operation. Its share is about 95%, but there is still a lack of vibrating screening equipment for sample preparation.

(3) Motion sieve

The working principle of the moving screen: the working mechanism of the roller screen is that several screen shafts are arranged in parallel in the horizontal plane, and each screen shaft rotates in the same direction to make the material move forward along the screen surface. At the same time, the material is conveyed, the particles smaller than the size of the sieve fall from the sieve, and the particles larger than the size of the sieve stay on the screen and continue to move forward and fall into the material collection device. The disadvantage is that it takes up a lot of space and is not suitable for For small-scale sample preparation and screening.

Contents of the invention

The present invention overcomes the deficiencies in the prior art, and provides a material screening and collecting device based on sample preparation detection, which is specially aimed at the sample preparation of materials, and adopts a motor to drive an eccentric device to generate the principal excitation vector and the principal excitation moment. During the sieving process, the vibrating linear sieve part is used for sieving and the sample collection part is used to complete the sample collection.

In order to solve the above technical problems, the technical solution adopted in the present invention is: a material screening and collection device based on sample preparation and detection, including a linear vibrating screen mechanism and a sample collection mechanism, and the sample collection mechanism is arranged behind the linear vibrating screen mechanism , used to collect the materials screened out by the linear vibrating screen mechanism. The structure of the linear vibrating screen mechanism is: including a right side plate, an upper plate, a polarizing wheel, a motor, a screen, a front side plate, a left side plate, a bottom plate, a support Rod, fixed seat, spring support, spring, rear plate, eccentric block and motor seat plate, the right side plate, left side plate, front side plate and rear plate are matched with each other to form a closed cylinder with upper and lower ends open. Shaped structure, the bottom plate is obliquely arranged at the bottom of the cylindrical structure, three sides of the bottom plate are respectively connected with the lower ends of the right side plate, left side plate, and front side plate, and the other side is connected with the lower end of the rear plate. There is a gap between them, as the outlet, the upper plate is fixed on the upper end surface of the cylindrical structure, the screen is divided into four layers in total, the first layer is arranged on the upper part of the cylindrical structure, and the screen The first layer of the screen is located under the upper plate, and the second, third, and fourth layers of the screen are installed in sequence between the first layer of the screen and the bottom plate. The structure is completely similar to the first layer, and the size of the screen hole and the surrounding Dimensions vary slightly. The upper plate is provided with a polarizing wheel and a motor, and the motor drives the polarizing wheel to rotate and drive the screen to vibrate, and the screened materials are dropped from the screen surface of the first layer of screens into the sample collection mechanism, and the unscreened materials are Falling from the bottom of the first layer of screen to the second layer, the same screened material falls into the sample collection mechanism from the screen surface, and the unscreened material falls from the bottom of the second layer of screen to the third layer, similarly, in this way By analogy, after the fourth layer of screening is completed, the unscreened materials fall to the inclined bottom plate and are discharged from the discharge port. The entire screening process is divided into four mesh sizes of materials, which are sequentially separated from each layer of inclined screens. fall into the corresponding hoppers of each layer in the sample collection mechanism. The cylindrical structure is vertically arranged on the fixed seat through the support rod and the spring support, the spring support is arranged on the upper end of the support rod, and the spring is sleeved on the spring support;

The structure of the sample collection mechanism is: comprising a hopper seat plate, a first hopper, a second hopper, a third hopper, a fourth hopper and an angle steel support, the hopper seat plate is vertically fixed on the angle steel support, and the angle steel support Set on the fixed seat, the first hopper, the second hopper, the third hopper and the fourth hopper are vertically staggered on the hopper seat plate, the first hopper, the second hopper, the third hopper and the fourth hopper It is used to screen the materials from the screen surface of the first layer to the fourth layer of screen in turn.

The materials of the right side board, upper board, front side board, left side board, bottom board and rear board are all thin iron sheets, and are assembled together by screws and nuts.

The polarizing wheel is directly connected to the motor to provide polarization force as the motor shaft rotates, and the motor is fixed on the upper plate through the motor seat plate.

The upper plate is provided with eccentric blocks, and according to actual needs, eccentric blocks with different thickness specifications can be selected to be connected to achieve the best screening effect.

The hopper seat plate is provided with four hoppers with different heights, and the hoppers are correspondingly arranged at the lower ends of the first hopper, the second hopper, the third hopper and the fourth hopper, and the silos are used for the collected Temporary storage of samples, or for real-time transport of sieved samples.

The fixed seat and the angle steel bracket are fixed with screws and nuts with long slot holes, which is convenient for real-time adjustment of the relative positions of the two according to different working conditions, so that the sieved samples can accurately fall into the corresponding hopper.

The upper board is fixed between the left side board and the right side board.

Compared with the prior art, the present invention has the beneficial effects that: the present invention has the characteristics of small size, light weight, portability, etc., and has accurate screening, fast screening speed, multi-functional integration, simple operation and convenient manufacture.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a diagram of the use state of the present invention.

In the figure: 1 is the hopper seat plate, 2 is the nut, 3 is the right side plate, 4 is the upper plate, 5 is the polarizing wheel, 6 is the motor, 7 is the screen, 8 is the front side plate, 9 is the left side plate, 10 is the screw, 11 is the fourth hopper, 12 is the third hopper, 13 is the second hopper, 14 is the first hopper, 15 is the angle steel bracket, 16 is the bottom plate, 17 is the support rod, 18 is the fixing seat, 19 is the spring Bearing, 20 are springs, 21 are back plates, 22 are feed bins, 23 are eccentric blocks, and 24 are motor seat plates.

detailed description

As shown in Fig. 1 and Fig. 2, a material screening and collecting device based on sample preparation and detection of the present invention includes a linear vibrating sieve mechanism and a sample collection mechanism, and the sample collection mechanism is arranged behind the linear vibrating sieve mechanism for Collect the materials screened by the linear vibrating screen mechanism. The structure of the linear vibrating screen mechanism is: including the right side plate 3, the upper plate 4, the polarizing wheel 5, the motor 6, the screen 7, the front side plate 8, and the left side plate 9 , base plate 16, support rod 17, fixed seat 18, spring support 19, spring 20, rear plate 21, eccentric block 23 and motor seat plate 24, described right side plate 3, left side plate 9, front side plate 8 and The rear plates 21 are matched with each other to form a cylindrical structure with closed sides and open upper and lower ends. The bottom plate 16 is obliquely arranged at the bottom of the cylindrical structure. Three sides of the bottom plate 16 are connected to the right side plate 3 and the left side plate respectively The lower ends of the plate 9 and the front side plate 8 are correspondingly connected, and there is a gap between the other side and the lower end of the rear plate 21 as a discharge port. The upper plate 4 is fixedly arranged on the upper end surface of the cylindrical structure, and the screen The net 7 is divided into four layers in total, the first layer is arranged on the upper part of the cylindrical structure, and the first layer of the screen 7 is located below the upper plate 4, and is sequentially installed between the first layer of the screen 7 and the bottom plate 16 The second layer, the third layer and the fourth layer of the screen 7 are completely similar in structure to the first layer, but the size of the screen hole and the peripheral size are slightly different. The upper plate 4 is provided with a polarizing wheel 5 and a motor 6, and the motor 6 drives the polarizing wheel 5 to rotate and drive the screen 7 to vibrate, and the screened material falls from the first layer of screen 7 into the sample collection Mechanism, the unscreened material falls from the bottom of the first layer of screen 7 to the second layer, and the same screened material falls into the sample collection mechanism from the screen surface, and the unscreened material falls from the bottom of the second layer of screen 7 to the The third layer is the same, and so on. After the fourth layer of screening is completed, the unscreened materials fall to the inclined bottom plate 16 and are discharged from the discharge port. The entire screening process is divided into four mesh sizes. , and in turn fall from each layer of inclined sieve surface into each corresponding layer of hopper in the sample collection mechanism. The cylindrical structure is vertically arranged on the fixed seat 18 through the support rod 17 and the spring support 19, the spring support 19 is arranged on the upper end of the support rod 17, and the spring 20 is sleeved on the spring support 19;

The structure of the sample collection mechanism is: comprising a hopper seat plate 1, a first hopper 14, a second hopper 13, a third hopper 12, a fourth hopper 11 and an angle steel bracket 15, and the hopper seat plate 1 is vertically fixed on the angle steel On the bracket 15, the angle steel bracket 15 is arranged on the fixed seat 18, and the first hopper 14, the second hopper 13, the third hopper 12 and the fourth hopper 11 are vertically staggered and arranged on the hopper seat plate 1. The first hopper 14, the second hopper 13, the third hopper 12 and the fourth hopper 11 are used to receive the material screened out from the screen 7, the first hopper 14, the second hopper 13, the third hopper 12 And the shape of the fourth hopper 11 is different.

The materials of the right side plate 3 , upper plate 4 , front side plate 8 , left side plate 9 , base plate 16 and back plate 21 are all thin iron sheets, and are combined by screws 10 and nuts 2 .

The polarizing wheel 5 is directly connected to the motor 6 to provide a polarization force as the motor 6 rotates, and the motor 6 is fixed on the upper plate 4 through the motor seat plate 24 .

The upper plate 4 is provided with an eccentric block 23, and according to actual needs, the eccentric block 23 with different thickness specifications can be selected and connected to achieve the best screening effect.

The hopper seat plate 1 is provided with four hoppers 22 of different heights, and the hoppers 22 are correspondingly arranged at the lower ends of the first hopper 14, the second hopper 13, the third hopper 12 and the fourth hopper 11. The bin 22 is used for temporary storage of collected samples, or for real-time transportation of screened samples.

The fixed seat 18 and the angle steel bracket 15 are fixed with screws 10 and nuts 2 to adopt long slotted holes, which is convenient for real-time adjustment of the relative positions of the two according to different working conditions, so that the sieved samples accurately fall into the corresponding hoppers.

The upper board 4 is fixed between the left side board 9 and the right side board 3 .

Working process of the present invention:

When the device starts to work, first put the material box under the hopper seat plate 1, turn on the power, and make the motor 6 drive the polarizing wheel 5 to start rotating, and then allow the material to enter from the upper end of the screen 7 to start screening. The material is thrown on the screen 7 under the throwing action of gravity and polarization force, and the screening of each layer of the screen is completed in turn. Slightly adjust the relative position of the hopper seat plate 1 and the fixed seat 18, so that the sieved sample enters the hopper from the lower end of the sieve surface. The first hopper 14, the second hopper 13, the third hopper 12, and the fourth hopper 11 are staggered up and down, with different shapes. The sieved material falls into the corresponding material box through the silo 22, and the rest of the material passes through the bottom plate 16 The diversion effect with the rear plate 21 is discharged from the discharge port at the lower part of the screen body. Then just can carry out follow-up detection to the sample in the magazine.

In addition, because the lower part of the hopper seat plate 1 of the device is suspended, it can be used in conjunction with the grooved belt to realize the automation of material sample preparation and detection. The specific operation steps are: the device is fixed above the trough belt, the outlet of the feed bin 22 is aligned with the middle position of the trough belt, and then the power is turned on. When the device starts to work, the motor 6 drives the polarizing wheel 5 to start rotating, and then let the The material enters from the upper end of the screen 7 and begins to sieve. The material is thrown on the screen 7 under the throwing action of gravity and polarization force, and the screening of each layer of the screen is completed in turn. Slightly adjust the relative position of the hopper seat plate 1 and the fixed seat 18, so that the sieved sample enters the hopper from the lower end of the sieve surface. The first hopper 14, the second hopper 13, the third hopper 12, and the fourth hopper 11 are staggered up and down, with different shapes. The sieved materials fall into the corresponding trough through the hopper 22, and the rest of the materials pass through the bottom plate 16 The diversion effect with the rear plate 21 is discharged from the lower part of the screen body. In practice, according to different detection requirements, you can choose to transport materials for detection in real time or wait for the first hopper 14 , the second hopper 13 , the third hopper 12 , the fourth hopper 11 and the silo 22 to be filled before starting to transport materials.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge of those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. kind of change.

Claims (7)

1. a kind of material screening collection device detected based on sample preparation, it is characterised in that including straight-line oscillation screening mechanism and sample Collecting mechanism, the sample collection mechanism is arranged on behind straight-line oscillation screening mechanism, for collecting straight-line oscillation screening mechanism sieve The material elected, the structure of the straight-line oscillation screening mechanism is：Including right plate（3）, upper plate（4）, polarization wheel（5）, motor （6）, screen cloth（7）, front side board（8）, left plate（9）, bottom plate（16）, support bar（17）, fixed seat（18）, spring fastening（19）、 Spring（20）And back plate（21）, the right plate（3）, left plate（9）, front side board（8）And back plate（21）It is mutually matched and is assembled into One all round closure, the up and down tubular structure of end opening, the bottom plate（16）It is inclined at the bottom of tubular structure, the bottom Plate（16）Wherein three sides respectively with right plate（3）, left plate（9）, front side board（8）Lower end correspondence connect, another side With back plate（21）Lower end between leave gap, as discharging opening, the upper plate（4）It is fixedly installed on tubular structure upper surface On, the screen cloth（7）Four layers are always divided into, first layer is arranged on the top of tubular structure, and the screen cloth（7）First layer position In upper plate（4）Lower section, in screen cloth（7）First layer and bottom plate（16）Between screen cloth is installed successively（7）The second layer, third layer with 4th layer, structure is completely similar to first layer, and screen size and peripheral size are slightly different, the upper plate（4）On be provided with partially Shake wheel（5）And motor（6）, the motor（6）Driving polarization wheel（5）Rotate driving screen cloth（7）Vibration is produced, by the thing filtered out Expect from first layer screen cloth（7）Sample collection mechanism is fallen on compass screen surface, the material not being screened is from first layer screen cloth（7）Lower section is fallen To the second layer, what is equally screened falls into sample collection mechanism from compass screen surface, and the material not being screened is from second layer screen cloth（7） Lower section drops to third layer, similarly, by that analogy, and after the 4th layer of screening is finished, the material not being screened drops to inclined bottom Plate（16）Discharged afterwards from discharging opening, whole screening process is divided into the material of four mesh level granularities, and inclined from each layer successively Fallen on compass screen surface in sample collection mechanism in corresponding each layered material bucket, the tubular structure passes through support bar（17）With spring branch Seat（19）It is vertically arranged in fixed seat（18）On, the spring fastening（19）It is arranged on support bar（17）Upper end, the spring （20）It is sleeved on spring fastening（19）；

The structure of the sample collection mechanism is：Including hopper seat board（1）, the first hopper（14）, the second hopper（13）, the 3rd material Bucket（12）, the 4th hopper（11）And angle bar frame（15）, the hopper seat board（1）It is fixed on angle bar frame vertically（15）On, institute State angle bar frame（15）It is arranged on fixed seat（18）On, first hopper（14）, the second hopper（13）, the 3rd hopper（12）With 4th hopper（11）Longitudinal direction, which is staggered, is arranged on hopper seat board（1）On, first hopper（14）, the second hopper（13）, the 3rd material Bucket（12）With the 4th hopper（11）For receiving successively from first layer to the 4th layer of screen cloth（7）The thing that filters out above of compass screen surface Material.

2. a kind of material screening collection device detected based on sample preparation according to claim 1, it is characterised in that the right side Side plate（3）, upper plate（4）, front side board（8）, left side version（9）, bottom plate（16）And back plate（21）Material be sheet iron, and pass through Screw（10）And nut（2）Combine.

3. a kind of material screening collection device detected based on sample preparation according to claim 1 or 2, it is characterised in that institute The polarization wheel stated（5）It is connected directly between motor（6）On, with motor（6）Main axis and polarization power is provided, and the motor （6）Pass through motor seat board（24）It is fixed on upper plate（4）On.

4. a kind of material screening collection device detected based on sample preparation according to claim 3, it is characterised in that on described Plate（4）On be provided with eccentric block（23）, and the eccentric block of connection different-thickness specification according to actual needs, can be selected（23）Make sieve Point effect reaches most preferably.

5. a kind of material screening collection device detected based on sample preparation according to claim 4, it is characterised in that the material Struggle against seat board（1）On be provided with four highly different feed bins（22）, the feed bin（22）It is correspondingly arranged at the first hopper（14）, Two hoppers（13）, the 3rd hopper（12）With the 4th hopper（11）Lower end, the feed bin（22）For being collected into the temporary of sample When store, or for having sieved the Real-Time Transport of sample.

6. a kind of material screening collection device detected based on sample preparation according to claim 5, it is characterised in that described solid Reservation（18）With angle bar frame（15）Use screw（10）And nut（2）Bearing uses long slot bore, is easy to real according to different operating modes When adjustment both relative position so that the sample after screening is accurately fallen into corresponding hopper.

7. a kind of material screening collection device detected based on sample preparation according to claim 6, it is characterised in that on described Plate（4）It is fixed on left plate（9）With right plate（3）Between.