CN111531940A

CN111531940A - Variable-resistance type squeezing screen drum in thick-wall

Info

Publication number: CN111531940A
Application number: CN202010297042.1A
Authority: CN
Inventors: 马鑫; 陆晓春; 王金生
Original assignee: Shenzhen Longcheng High Tech Environmental Protection Co ltd
Current assignee: Shenzhen Longcheng High Tech Environmental Protection Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-08-14

Abstract

The invention relates to a thick-wall internal varistor type squeezing screen cylinder which comprises a cylinder body and varistor screen holes. The varistor sieve holes comprise outer cone holes and inner cone holes. The squeezing and squeezing device is used in fruit and vegetable garbage squeezing and squeezing equipment, and solves the problems that a screen cylinder with thick walls and small holes is easy to block holes and juice is not smooth to screen out.

Description

Variable-resistance type squeezing screen drum in thick-wall

Technical Field

The invention relates to a fruit and vegetable garbage squeezing and squeezing dehydration equipment accessory, in particular to a thick-wall inner variable-resistance squeezing screen cylinder.

Background

With the improvement of domestic living standard year by year and the continuous optimization and adjustment of industrial structure, the development of the fruit and vegetable industry in China is rapid, the waste fruit and vegetable garbage increases year by year, garbage classification is promoted in China, and the fruit and vegetable garbage mixed with the domestic garbage in the past gradually starts to be separately sorted out for reduction treatment. Because the characteristic that fruit vegetables rubbish moisture content is high, the decrement technique is opened around dehydration and wet-dry separation, emerges fruit vegetables rubbish extrusion, squeezes dewatering equipment, and this type of equipment need be equipped with a sieve section of thick bamboo usually for go out the moisture screening in the fruit vegetables rubbish, reach the decrement purpose. The fruit and vegetable garbage is soft in physical property and high in fiber content, and the problems of hole blockage and unsmooth juice screening are easy to occur if a screen cylinder is thick and small in aperture in the process of pressing and squeezing.

Disclosure of Invention

The invention aims to make up for the defects of the prior art, and provides a thick-wall inner variable-resistance squeezing screen cylinder which is used in fruit and vegetable garbage squeezing and squeezing dewatering equipment and solves the problems of easy hole blockage and unsmooth juice screening of the thick-wall small-hole screen cylinder.

In order to achieve the purpose, the invention adopts the following technical scheme:

a variable-resistance squeezing screen drum with a thick wall and an inner wall comprises a drum body (1) and variable-resistance screen holes (2). The varistor sieve holes (2) comprise outer taper holes (21) and inner taper holes (22).

The outer conical holes (21) and the inner conical holes (22) are arranged in an hourglass shape, the angle alpha of the outer conical holes (21) faces to the outside of the cylinder body (1), the angle beta of the inner conical holes (22) faces to the inside of the cylinder body (1), and alpha is less than beta.

The cylinder body (1) has a wall thickness t, and the outer conical hole (21) and the inner conical hole (22) have a hole diameter phi d at the intersection and a position t in the wall thickness₀The relation of the three is 1.35. d ≦ t₀Not more than 0.45. t, and t₀≥0.25·t。

The outer taper hole (21) is provided with phi D on the outer wall surface of the cylinder body (1)₁The inner taper hole (22) has phi D on the inner wall surface of the cylinder body (1)₂，D₁=D₂=t₀。

When the fruit and vegetable garbage is squeezed to the inner wall surface of the cylinder body (1), the fruit and vegetable garbage enters the inner taper hole (22), the passing resistance of the fruit and vegetable garbage is gradually increased due to the gradual reduction of the passing area until a damping peak area is formed in the wall thickness of the cylinder body (1), and the internal stress of the fruit and vegetable garbage in the damping peak area is gathered and squeezed mutually; after passing through the peak area, the fruit and vegetable garbage enters the outer taper hole (21), and the passing area is gradually increased, so that the passing resistance of the fruit and vegetable garbage is gradually reduced, the fruit and vegetable garbage can rapidly pass through the pressure reduction area, and the blockage is not easily caused; the damping peak area is utilized to form local extrusion force, the pressure reduction area is utilized to discharge fruit and vegetable garbage smoothly, and the aims of solving the problems of hole blockage and unsmooth juice screening which are easily caused by a screen cylinder with a thick wall and a small hole are fulfilled.

The invention has the advantages that:

1. the material is subjected to one additional instantaneous extrusion when the juice is extracted from the thick wall by utilizing the conical surface pressurization principle;

2. the material is quickly decompressed after being instantaneously extruded by utilizing the conical surface decompression principle;

3. the installation is simple, need not extra paired inner tube or urceolus, and the single section of thick bamboo can realize the varistor extrusion effect.

Drawings

Fig. 1 is a perspective view of a thick-walled internal varistor type press screen cylinder.

Fig. 2 is a schematic diagram showing the dimensions of the cross section of a thick-walled internal varistor press screen cylinder.

Fig. 3 is a schematic diagram of arrangement of the taper holes and variation of juice discharge resistance.

Detailed Description

Referring to the attached drawing, the variable-resistance type squeezing screen cylinder with the thick wall and the inner wall comprises a cylinder body (1) and variable-resistance screen holes (2). The varistor sieve holes (2) comprise outer taper holes (21) and inner taper holes (22).

Claims

1. A thick-wall internal variable-resistance type squeezing screen cylinder comprises a cylinder body and variable-resistance screen holes; the varistor sieve holes comprise outer cone holes and inner cone holes.

2. A thick-walled, in-wall varistor press screen cylinder as claimed in claim 1, wherein: the outer conical holes and the inner conical holes are arranged in an hourglass shape, the angle alpha of the outer conical holes faces the outside of the cylinder body, the angle beta of the inner conical holes faces the inside of the cylinder body, and alpha is less than beta.

3. A thick-walled, in-wall varistor press screen cylinder as claimed in claim 1, wherein: the cylinder body has a wall thickness t, the outer conical hole and the inner conical hole have a hole diameter phid at the intersection and a position t in the wall thickness₀The relation of the three is 1.35. d ≦ t₀Not more than 0.45. t, and t₀≥0.25·t。

4. A thick-walled internally variable resistance press screen cylinder as claimed in claims 1 and 3, wherein: the outer taper hole is provided with phi D on the outer wall surface of the cylinder body₁The inner taper hole has a diameter phi D on the inner wall surface of the cylinder body₂，D₁=D₂=t₀。

5. A thick-walled, in-wall varistor press screen cylinder as claimed in claim 1, wherein: when the fruit and vegetable garbage is squeezed to the inner wall surface of the cylinder body, the fruit and vegetable garbage enters the inner taper hole, the passing area is gradually reduced, the passing resistance of the fruit and vegetable garbage is gradually increased until a damping peak area is formed in the wall thickness of the cylinder body, and the internal stress of the fruit and vegetable garbage in the area is gathered and squeezed mutually; after passing through the peak area, the fruit and vegetable garbage enters the outer taper hole, and the passing area is gradually increased, so that the passing resistance of the fruit and vegetable garbage is gradually reduced, the fruit and vegetable garbage can rapidly pass through the pressure reduction area, and the blockage is not easily caused; the damping peak area is utilized to form local extrusion force, the pressure reduction area is utilized to discharge fruit and vegetable garbage smoothly, and the aims of solving the problems of hole blockage and unsmooth juice screening which are easily caused by a screen cylinder with a thick wall and a small hole are fulfilled.