CN219453062U - Movable labyrinth type airtight valve rotor blade - Google Patents

Abstract

The utility model discloses a movable labyrinth airtight valve rotor blade, wherein the top of the blade adopts a labyrinth structure under the condition of not increasing the gap between the blade and a shell, and carbon black powder is filled in a labyrinth groove during working, so that the sealing effect is achieved and the abrasion of the blade is reduced; meanwhile, the blades and the rotor sleeve are of a combined structure, so that the rotor sleeve is not deformed and is convenient to replace, and the maintenance cost is low.

Description

Movable labyrinth type airtight valve rotor blade

Technical Field

The utility model belongs to the field of chemical industry, and particularly relates to an airtight valve rotor for the carbon black industry.

Background

The airtight valve positioned under the bag filter plays a role in conveying carbon black powder, is also a sealing device, prevents air from being sucked from a discharge hole in the material conveying process, and can prevent massive metal impurities in the carbon black powder from damaging the airtight valve blades. The clearance between the rotor blade and the shell is very small, and when carrying the soot powder, the rotor blade is easy to be replaced frequently, and the soot powder between the blade and the shell is easy to adhere to the blade to cause blocking or shutdown accidents. Analysis considered that: 1) Too small clearance between the rotor blade and the shell is a main reason, if the clearance is increased, the leakage of the airtight valve is caused; 2) The rotor of the airtight valve is a welding assembly, and the rotor must be replaced after the blades are worn, so that the maintenance cost is high. Therefore, we design a movable labyrinth airtight valve rotor blade, the top of the blade adopts a labyrinth structure under the condition of not enlarging the gap between the blade and the shell, and carbon black powder is filled in the labyrinth groove during working, so that the sealing effect is achieved and the abrasion of the blade is reduced; meanwhile, the blades and the rotor sleeve are of a combined structure, so that the rotor sleeve is not deformed and is convenient to replace.

Disclosure of Invention

The utility model aims to design a movable labyrinth airtight valve rotor blade, which adopts the following technical scheme:

a movable, labyrinth-type, gas-tight valve rotor blade, comprising: blade, rotor cover, clamp plate, positioning bolt, its characterized in that: the airtight valve rotor consists of at least two blades, a rotor sleeve, a pressing plate and positioning bolts; the rotor sleeve is polygonal and is longitudinally provided with stepped grooves, and the number of edges is the same as that of blades; the top of the blade adopts a labyrinth structure, the bottom of the blade is transversely provided with a plurality of grooves, the pressing plate is inserted into the grooves of the blade, and then the pressing plate is inserted into the longitudinal stepped grooves of the rotor sleeve and fixed by positioning bolts; the structure reduces the abrasion of the blade and is convenient to replace.

The design key points of the utility model are as follows:

1. the abrasion between the top ends of the blades and the inner wall of the shell is reduced;

2. after the blades are worn, the rotor is not required to be replaced, and the blades are replaced.

The utility model has the advantages that:

1. when in work, the labyrinth grooves are filled with carbon black powder, so that the sealing effect is achieved, and the abrasion of the blades is reduced;

2. the airtight valve rotor is an assembly, so that the problem of welding deformation is solved, the accuracy is high, the replacement is convenient, and the maintenance cost is low.

Drawings

FIG. 1A movable labyrinth type airtight valve rotor blade of the present utility model

FIG. 2 is a view of FIGS. 1A-A

The marks in the figure: 1-blade, 2-rotor sleeve, 3-pressing plate and 4-positioning bolt

a-feeding port, b-discharging port, c-checking port

Detailed Description

A movable, labyrinth-type, gas-tight valve rotor blade, comprising: blade 1, rotor cover 2, clamp plate 3, positioning bolt 4.

The specific implementation process comprises the following steps:

1. and (3) blanking and processing: blade 1, rotor sleeve 2, clamp plate 3;

2. outsourcing: a positioning bolt 4;

3. and (3) assembling: the pressing plate 3 is arranged in the groove of the blade 1, and then is arranged in the stepped groove in the rotor sleeve 2 together, and finally is fixed by the positioning bolt 4;

4. checking: after assembly, checking that the outer edge diameter of each blade 1 of the rotor meets the design requirement, and then fastening the positioning bolts 4 again;

5. the assembled rotor is assembled with the rotor shaft through keys and then assembled with the shell and the end cover.

Claims (3)

1. A movable, labyrinth-type, gas-tight valve rotor blade, comprising: blade (1), rotor cover (2), clamp plate (3), positioning bolt (4), its characterized in that: the airtight valve rotor consists of at least two blades (1), rotor sleeves (2), pressing plates (3) and positioning bolts (4); the pressing plate (3) is inserted into the groove of the blade (1) and then inserted into the longitudinal stepped groove of the rotor sleeve (2) to be fixed by the positioning bolt (4).

2. A movable, labyrinth seal valve rotor blade as defined in claim 1, wherein: the rotor sleeve (2) is polygonal and is longitudinally provided with stepped grooves, and the number of edges of the rotor sleeve is the same as that of the blades (1).

3. A movable, labyrinth seal valve rotor blade as defined in claim 1, wherein: the top of the blade (1) adopts a labyrinth structure, and the bottom is transversely provided with a plurality of grooves.