Circular mould and sludge granulator

A granulator and ring die technology, used in sludge treatment, die extrusion granulation, fixed/solidified sludge treatment, etc., can solve the problem of inappropriate sludge raw material granulation, etc. Abrasiveness, the effect of reducing the cost of use

Pending Publication Date: 2021-05-28
郑州市格沃环保开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the structure parameters of the existing ring die are not suitable for sludge raw material granulation, the present invention provides a ring die and sludge granulator. By optimizing the structure parameters of the ring die and die holes, it is beneficial to sludge raw materials molding

Method used

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  • Circular mould and sludge granulator
  • Circular mould and sludge granulator
  • Circular mould and sludge granulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1~Figure 5 As shown, a ring die includes a ring die body 1 and a die hole 2, the ring die body 1 is a torus structure made of cold-work die steel, and the Rockwell hardness of the ring die body 1 is HRC20-70;

[0033] Compared with the commonly used stainless steel ring die, the ring die is made of cold work die steel with a Rockwell hardness of HRC20-70, which has good wear resistance, corrosion resistance and toughness, and is in line with the characteristics of sludge raw materials. For sludge granulation operations.

[0034] The upper and lower sides of the ring die body 1 form two symmetrical die hole areas, each of which is provided with a plurality of rows of die holes 2 that are dislocated up and down, and each row of die holes 2 is several One, and the ring direction are all set on the ring die body 1.

[0035] In this embodiment, the opening ratio of the die hole 2 on the ring die body 1 is in the range of 20-60%, and the three adjacent die h...

Embodiment 2

[0050] Such as Figure 6 As shown, this embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the depth L of the die hole 2 is 80 mm, that is, the thickness of the ring die body 1 is 80 mm, and the thicker the ring die body 1 , The deeper the die hole 2 and the smaller the hole diameter, the greater the resistance of the hole wall and the firmer the extrusion of the material;

[0051] Through multiple tests, for sludge raw materials with a moisture content of 8%-25%, it is more appropriate to use a ring die body 1 with a thickness of 80mm, which can obtain high-quality sludge particles and is not easy to block the die hole 2 at the same time.

[0052] In this embodiment, the length of the pre-compression section 21 is L 1 is 32mm, and the diameter of the large diameter end is D 1 24mm, length L of forming section 22 2 22mm, diameter D 2 18mm, release section 23 length L 3 26mm, diameter D 3 22mm;

[0053] The...

Embodiment 3

[0057] Such as Figure 7 As shown, the present embodiment is basically the same as Embodiment 2, and the similarities will not be repeated. The difference is that the depth L of the die hole 2 is 80mm, and the length L of the pre-compression section 21 1 35mm, the diameter of the large diameter end is D 1 26mm, length L of forming section 22 2 25mm, diameter D 2 20mm, release section 23 length L 3 20mm, diameter D 3 The ring die body 1 is made through the above parameters and applied to production, and columnar sludge particles with a diameter of φ20mm can be obtained.

[0058] The present invention optimizes the structural parameters of the die hole 2 to make it suitable for the granulation of sludge raw materials, improves the smooth discharge of sludge, is beneficial to the molding of the product, and ensures its molding quality. At the same time, it also makes the ring die body 1 The service life is extended and the cost of use is reduced.

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Abstract

The invention relates to a circular mold which comprises a circular mold body and mold holes, two symmetrical mold hole areas are formed on the upper side and the lower side of the circular mold body, a plurality of rows of mold holes are formed in each mold hole area in an up-down staggered mode, the number of the mold holes in each row is multiple, and the mold holes are annularly formed in the circular mold body; the die hole comprises a pre-pressing section, a forming section and a releasing section which sequentially penetrate through the inside and the outside of the circular die body, the pre-pressing section is in a conical hole shape, and the inlet taper angle of the pre-pressing section is a grabbing angle; and the forming section is in a straight hole shape, the forming section is matched with the small-diameter end of the pre-pressing section, and the releasing section and the forming section are communicated to form a stepped straight hole shape. The sludge granulator comprises a box body, a box cover, a main machine box body, a main motor, a baffle plate, a discharge hopper and a door cover, and further comprises the circular mould. According to the invention, the related parameters of the ring mold body and the mold hole structure are optimally designed, so that the ring mold is suitable for the sludge granulation operation, the product forming quality is ensured, and the practicability is good.

Description

technical field [0001] The invention relates to the technical field of sludge granulation, in particular to a ring die and a sludge granulator. Background technique [0002] Sludge is the product of sewage treatment, which is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. In the sludge pyrolysis gasification project, the sludge granulator is a mechanical device that makes sludge into columnar particles, and the ring die is one of the core components of the sludge granulator, which has a fine structure and is easy to wear. features. [0003] The complexity of the composition of municipal sludge makes the selection of ring die more difficult. The hole shape and thickness of the ring die have a close relationship with the quality and efficiency of granulation. If the hole diameter of the ring die is too small and the thickness is too thick, the production efficiency will be low and the cost will be high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12B01J2/22
CPCB01J2/22C02F11/008C02F11/12
Inventor 李兵王秀珍赵国勇李明峰张宏哲李中杰李晓宇王飞飞
Owner 郑州市格沃环保开发有限公司
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