CN202427522U - Blade pulverizer - Google Patents

Abstract

The utility model relates to a blade pulverizer, which mainly includes a feed port, a shell, a blade assembly, a belt pulley, a transmission shaft and a sieve. The blade assembly consists of blades, spacers, strips and connecting discs. The blade is installed on the connection plate, the blade is provided with two fixing holes, the threading strip passes through the fixing holes to fix the blade, and every two blades are separated by a spacer. The pulverizer is provided with 3 to 5 separation chambers, the separation chambers are located on the upper part of the blade assembly, and the separation chambers are separated by partitions. The material of the blade is Q235 steel or stainless steel, the cutting edge of the blade is coated with a wear-resistant paint layer, and the paint of the grinding paint layer is cobalt-based alloy X-40. The utility model effectively separates large and small particles inside the pulverizer through the structure of the separation chamber, avoids excessive crushing of small particle materials, and reduces the powder content in the product. The utility model has a blade with a wear-resistant coating layer with small thickness, high strength, good durability and convenient installation. Compared with the traditional pulverizer, the finished product rate of pulverized products is increased by more than 20%.

Description

A blade grinder

technical field

The utility model belongs to the technical field of food, medical treatment, chemical industry and feed processing, relates to a blade pulverizer, in particular to a separation chamber type blade pulverizer.

Background technique

In modern large-scale industry, many products need to crush block materials into granular materials without powder. Generally, sieving equipment is used to remove the powder in the crushed materials. At present, there is a problem of excessive crushing in the pulverizer equipment, which makes the product forming rate of the granules low and the powder is more. Although equipment such as ACM impact mills can avoid excessive crushing, due to high cost and the need for an air distribution system, the scope of application is limited. The production of particles with a particle size of about 1 mm is mainly achieved by low-cost hammer or blade mills.

In recent years, improvements to hammer and blade mills have emerged, such as the use of toothed plates, water drop hammer mills, etc. However, the improvement of these crushing equipment is mainly carried out on improving production efficiency, and there is less improvement on avoiding excessive crushing of materials. A large amount of powdery materials generated during production either need to be reprocessed, granulated and then crushed, or are wasted as waste. For pulverizers that produce products with particle size requirements, the yield and production efficiency are equally important.

The Chinese invention patent application with the publication number CN102240580A discloses "a hammer mill, which mainly includes a feed port (1), a hammer (2), a rotor (3), a turntable (4) on the rotor, and blades (5) , motor (6), pulverizer outlet (7), machine body (8), sieve sheet (9), door (10), press screen frame (11), wherein, wind blade ( 5), there are 2 pieces installed in a 180-degree line between each gear, the fan blades of the two adjacent gears are at right angles to each other, and the turntable (4) has several ventilation holes near the rotating shaft, so that when the rotor rotates, The wind can enter from the gap between the shaft holes on both sides of the pulverizer, and then pass through the ventilation holes of the turntable. Under the fanning of the fan blades, the part of the material left in the center of the rotor that is inactive will be quickly pushed to the end of the hammer blade, and the hammer blade will be released. At the same time, the fan blades provide a pulsating wind pressure, which destroys the uniform centrifugal force of the material ring inside the screen and the negative pressure outside the screen, thereby increasing the output and material uniformity, and improving the screen blocking phenomenon.”. However, this patent application does not solve the problem of excessive pulverization of the pulverizer and improvement of the yield of pulverized products.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a blade pulverizer, which is an improvement on a blade pulverizer or a hammer pulverizer, so as to improve the production efficiency of the equipment and the product forming rate.

The blade pulverizer of the utility model mainly includes a feed inlet, a housing, a blade assembly, a belt pulley, a transmission shaft and a sieve. The blade assembly includes blades, spacers, threading strips and connecting discs. The blade is installed on the connection plate, the blade is provided with a fixing hole, and the threading strip passes through the fixing hole to fix the blade, and every two blades are separated by a spacer. The pulverizer is provided with 3 to 5 separation chambers, the separation chambers are located on the upper part of the blade assembly, and the separation chambers are separated by partitions.

The height B of the central partition is 30-60mm, the distance H between the partitions is 45-100mm, and the distance F from the partition to the end of the blade is 5-15 mm. The blade has two fixing holes. The material of the blade is Q235 steel or stainless steel, the thickness of the blade is 1-10mm, the cutting edge of the blade is coated with a wear-resistant paint layer, and the paint of the wear-resistant paint layer is cobalt-based alloy X-40. The mesh diameter of the sieve is 0.5-3mm, and the thickness of the sieve is 0.5-2mm.

The blade type pulverizer of the utility model adds a separation chamber structure to effectively separate large and small particles inside the pulverizer. Using a pulverizer with a separation chamber structure, large particle materials return to the blade rotation area to be pulverized again during the pulverization process, and small particles The material no longer enters the blade rotation area for re-grinding, avoiding excessive crushing of small particle materials and reducing the powder content in the product. In terms of the installation form and structure of the blade, the blade is fixed through two fixing holes, the thickness of the blade is reduced, and the installation is convenient. At the same time, due to the reduced thickness, the blade assembly is more compact, and the installation of the blade assembly group is more firm. The strength and durability of the blade are improved by spraying the wear-resistant paint layer on the blade. Compared with the traditional blade type pulverizer, hammer type pulverizer and water drop type pulverizer, the yield of pulverized products is increased by more than 20%, and the yield can be further improved by improving the installation method of the blade. .

Description of drawings

Fig. 1 is the structural representation of the utility model blade pulverizer;

Fig. 2 is the side view of Fig. 1;

Figure 3 is a schematic diagram of the blade

Figure 4 is a schematic diagram of the separation chamber.

in:

1—shell, 2—blade, 3—spacer, 4—connecting plate, 5—threading strip, 6—key, 7—pulley, 9—drive shaft, 10—sieve, 11—inlet, 12— Separation chamber, 13—feed outlet, 14—partition plate, 15—fixing hole, 16—blade assembly, 17—coating layer.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

The utility model blade pulverizer as shown in Figure 1 and Figure 2 mainly includes a feed port 11, a housing 1, 4 separation chambers 12, a pulley 7, a bearing box 8, a transmission shaft 9 and a sieve 10. The blade assembly 16 is mainly composed of a blade 2 , a spacer 3 , a threading strip 5 and a connection plate 4 . Blade is installed on the connection plate 4, and blade has two fixing holes 15, and threading strip passes fixing hole fixing blade, separates with spacer 3 between every two blades. The separation chamber is located on the top of the blade assembly 16, and the separation chamber is separated by a partition 14. As shown in Figure 4, the height B of the central partition is 50 mm, the distance H between the partitions is 56 mm, and the distance F from the partition to the end of the blade is 8 mm. The material of the blade is Q235 steel, and the thickness of the blade is 1, 4, and 8 mm respectively. The specific blade thickness is determined according to the properties and requirements of the crushed material. As shown in Fig. 3, the blade portion of the blade is provided with a wear-resistant paint layer 17, and the paint of the wear-resistant paint layer is cobalt-based alloy X-40. The sieve hole diameter of the sieve sheet 10 is 0.5-3mm, and the thickness of the sieve sheet is 0.5-2mm, and the specific size is determined according to the crushed material.

The way of installing and replacing the blade is to open the upper cover of the pulverizer, turn the transmission shaft 9 and the blade assembly by hand, so that a group (2) of holes on the connecting plate 4 are located directly above the pulverizer, and the two wear strips 5 are respectively Insert through 2 holes. Arrange the blades 2, spacers 3, blades, and spacers alternately in sequence, penetrate the threading strips 5 and squeeze them tightly, and finally thread the threading strips into the holes of the connecting plate at the other end to complete the installation of the first set of blades. Rotate the transmission shaft and the blade assembly by 90°, install the second group of blades in the above-mentioned way, and then install the third and fourth groups of blades in the same way. After the pulverizer is installed, check the fastening of the fasteners of each part, and tighten them if they are loose. When removing the blades, rotate the transmission shaft and the blade assembly, place one group of blades directly above the pulverizer, pull out the threading strip, remove the blades, turn the transmission shaft and the blade assembly, and disassemble the remaining three sets of blades in the same way.

In order to verify the application effect of the present utility model, the barium carbonate sintered particles were used as raw materials, and the crushing test was carried out after sieving into pellets with a diameter of about 10 mm. The crushing test, the results are shown in Table 1. In the test, the yield is calculated based on the percentage of 14 mesh to 24 mesh sieve in the sample to the sampled product. The result shows that the finished product rate of the pulverized products of the utility model separation chamber type blade pulverizer is much higher than that of the other three pulverizers.

Table 1 Comparison of crushing test results between the utility model and the hammer mill, blade mill and water drop mill.

Note: 1. Unit: blade thickness (mm), rotational speed (rev/min), yield (wt%).

Claims (5)

1. A blade pulverizer, mainly comprising a feed port (11), a housing (1), a blade assembly (16), a pulley (7), a drive shaft (9) and a sieve (10), the blade assembly Including blade (2), spacer (3), threading strip (5) and connection plate (4), the blade is installed on the connection plate (4), the blade is provided with a fixing hole (15), threading strip passes through the fixed The hole (15) fixes the blade, and every two blades are separated by a spacer. It is characterized in that: the pulverizer is provided with 3 to 5 separation chambers (12), and the separation chamber is located at the blade assembly (16). The upper part is separated by a partition (14) between the separation chambers. 2. The pulverizer according to claim 1, characterized in that: the height B of the central partition is 30-60 mm, the distance H between the partitions is 45-100 mm, and the distance F from the partition to the end of the blade is 5-60 mm. 15mm. 3. The shredder according to claim 1 or 2, characterized in that: the blade (2) is provided with two fixing holes (15). 4. The pulverizer according to claim 3, characterized in that: the material of the blade is Q235 steel or stainless steel, the thickness of the blade is 1-10 mm, and the edge of the blade is coated with a wear-resistant paint layer (17). The coating of the wear-resistant coating layer is cobalt-based alloy X-40. 5. The pulverizer according to claim 3, characterized in that: the diameter of the sieve (10) is 0.5-3 mm, and the thickness of the sieve is 0.5-2 mm.

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