CN113697503A

CN113697503A - Rotary valve for tandem connection of upper and lower two machines

Info

Publication number: CN113697503A
Application number: CN202110827497.4A
Authority: CN
Inventors: 丁志军; 郭道迅
Original assignee: Nanjing Xiangrui Bulk Solids Engineering Co ltd
Current assignee: Nanjing Xiangrui Bulk Solids Engineering Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2021-11-26

Abstract

The invention discloses a rotary valve used by connecting an upper machine and a lower machine in series, which comprises an upper rotary valve and a lower rotary valve, wherein the top of the upper rotary valve is provided with a feed inlet, the bottom discharge port of the upper rotary valve is communicated with the upper port of the lower rotary valve, the bottom outlet of the lower rotary valve is communicated with a material gas pipeline, one end of the material gas pipeline is a compressed air inlet, and the other end of the material gas pipeline is a material gas outlet. The two rotary valves are matched up and down for use, so that under the condition of meeting the requirement of air locking pressure-resistant conveying, the problem that when some elastic large particles are conveyed or particles which are easy to gather into sheets after being sheared and extruded, the particles are extruded at the tops of the blades after being sheared and are agglomerated into sheets is solved.

Description

Rotary valve for tandem connection of upper and lower two machines

Technical Field

The invention relates to a rotary valve, in particular to a rotary valve used by connecting an upper machine and a lower machine in series.

Background

The rotary valve is also called as a rotary feeder or an air seal machine, has air locking performance and can resist certain pressure difference. The rotary valve can carry out quantitative material conveying and is a key technical device in a pneumatic conveying system. The rotary valve is composed of casing, end cover and impeller, the impeller rotates in the cylindrical casing, the material falls into the space between the blades on the impeller from the upper hopper by the gravity, the material is discharged to the discharge port at the lower part of the casing along with the rotation of the impeller and is discharged from the discharge port, or the lower part of the discharge port is connected with a pipeline, the falling material is mixed with air flow in the pipeline and reaches the destination through the pipeline under the action of pressure and air flow. The existing rotary valves can shear at the intersection of the blade top and the shell feed inlet in the process of conveying the particle materials (as shown in figure 2), and although a plurality of anti-blocking rotary valves aiming at the particle materials exist at present, the existing rotary valves cannot achieve due effects when conveying elastic large particle materials or particle materials which are easy to form sheets after being sheared and extruded. Due to the fact that the shearing is continuous, extrusion occurs at the top of the blade after shearing, the dough is contained into pieces, and the quality of the product is affected finally.

Disclosure of Invention

The invention provides a rotary valve used by connecting an upper machine and a lower machine in series, aiming at solving the problem that when the existing rotary valve conveys elastic large granules or granules which are easy to be aggregated into sheets after being cut and extruded, the cut granules are extruded at the top of a blade and are agglomerated into sheets.

The invention provides the following technical scheme:

the utility model provides an upper and lower two duplex series connection use rotary valve, includes upper portion rotary valve and lower part rotary valve, the top of upper portion rotary valve is the feed inlet, the bottom discharge mouth of upper portion rotary valve and the last mouthful intercommunication of lower part rotary valve, the bottom export of lower part rotary valve and material gas pipeline intercommunication, the one end of material gas pipeline is compressed air inlet, the other end of material gas pipeline is material gas export.

Furthermore, the upper rotary valve is a variable frequency speed reducing motor, the lower rotary valve is matched with a variable frequency speed reducing motor, and the rotating speed of the lower rotary valve is greater than the highest rotating speed of the upper rotary valve.

Further, the upper rotary valve and the lower rotary valve are both provided with a shell, and blades are arranged in the shell.

Further, a gap is arranged between the top of the blade in the upper rotary valve and the shell, and the gap is larger than the diameter of the granular materials.

Further, no gap is provided between the blade tips of the lower rotary valve and the housing.

Compared with the prior art, the invention has the beneficial effects that: the two rotary valves are matched up and down for use, so that under the condition of meeting the requirement of air locking pressure-resistant conveying, the problem that when some elastic large particles are conveyed or particles which are easy to gather into sheets after being sheared and extruded, the particles are extruded at the tops of the blades after being sheared and are agglomerated into sheets is solved.

Drawings

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

Fig. 2 is a schematic material shear.

FIG. 3 is a schematic view of the upper rotary valve without shearing the material after increasing the gap.

FIG. 4 is a schematic view of the lower rotary valve reducing the filling without shearing the material.

In the figure: 1. an upper rotary valve 11, a feed inlet 12, a discharge outlet 13 and a variable frequency speed reducing motor; 2. a lower rotary valve 21, an upper opening 22, an outlet 23 and a power frequency speed reducing motor; 3. a material gas pipeline 31, a compressed air inlet 32 and a material gas outlet; 4. a housing; 5. a blade; 6. a gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the rotary valve for use by connecting an upper machine and a lower machine in series comprises an upper rotary valve 1 and a lower rotary valve 2, wherein the top of the upper rotary valve 1 is provided with a feed inlet 11, a bottom discharge port 12 of the upper rotary valve 1 is communicated with an upper port 21 of the lower rotary valve 2, a bottom outlet 22 of the lower rotary valve 2 is communicated with a material gas pipeline 3, one end of the material gas pipeline 3 is provided with a compressed air inlet 31, and the other end of the material gas pipeline 4 is provided with a material gas outlet 32.

Frequency conversion gear motor 13 is selected for use to upper portion rotary valve 1, and the rotational speed is adjustable for adjust the transmission capacity, and 2 assignment work frequency reduction motor 23 of lower part rotary valve, 2 rotational speeds of lower part rotary valve are greater than the highest rotational speed of upper portion rotary valve 1, and output is greater than the load of upper portion rotary valve 1 far away.

The upper rotary valve and the lower rotary valve each have a housing 4, with vanes 5 provided in the housing 4.

As shown in FIG. 3, the upper rotary valve 1 is configured to have a gap larger than the diameter of the particles to be transported, i.e., a gap 6 is provided between the top of the vane 5 and the housing 4, which is larger than the diameter of the particles, so that the particles can leak between the top of the vane 5 and the housing 4 without shearing (see A in FIG. 3).

The lower rotary valve 2 adopts a smaller gap (fig. 4), namely the gap between the top of the blade 5 and the shell 4 is almost not (much smaller than the diameter of the particles), the air locking capacity is ensured, and the material is not sheared after filling is reduced (in the position B in fig. 4).

The upper rotary valve may be replaced with a screw conveyor.

Because the discharging capacity of the lower rotary valve 2 is far greater than that of the upper rotary valve 1, the filling rate of the rotor trough of the lower rotary valve 2 is lower in the discharging process, and the materials basically fall to the middle part and the bottom of the trough after entering the trough of the lower rotary valve 2, so that the shearing of the materials between the top of the blade and the shell is avoided (as shown in fig. 4). Through the cooperation use from top to bottom of two rotary valves like this, satisfying the withstand voltage condition of carrying of lock wind under, all avoided the phenomenon of shearing the material, solved when carrying some elastic big granule materials or shearing, the easy granule materials of gathering into slice class after the extrusion, the extrusion takes place at the blade top after the shearing, the problem of cohesion piece.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two duplex series connection use rotary valve about, which characterized in that: including upper portion rotary valve (1) and lower part rotary valve (2), the top of upper portion rotary valve (1) is feed inlet (11), bottom discharge gate (12) of upper portion rotary valve (1) and last mouthful (21) intercommunication of lower part rotary valve (2), bottom export (22) and material gas pipeline (3) intercommunication of lower part rotary valve (2), the one end of material gas pipeline (3) is compressed air import (31), the other end of material gas pipeline (4) is material gas export (32).

2. A rotary valve for two upper and lower dual machines in series connection according to claim 1, wherein: the variable-frequency speed reducing motor (13) is selected for the upper rotary valve (1), the lower rotary valve (2) is matched with the working frequency speed reducing motor (23), and the rotating speed of the lower rotary valve (2) is greater than the highest rotating speed of the upper rotary valve (1).

3. A rotary valve for two upper and lower dual machines in series connection according to claim 1, wherein: the upper rotary valve and the lower rotary valve are both provided with a shell (4), and blades (5) are arranged in the shell (4).

4. A rotary valve for two upper and lower dual machines in series connection according to claim 1, wherein: a gap (6) is arranged between the top of the blade (5) in the upper rotary valve (1) and the shell (4), and the gap (6) is larger than the diameter of the granular material.

5. A rotary valve for two upper and lower dual machines in series connection according to claim 1, wherein: no gap is arranged between the top of the blade (5) in the lower rotary valve (2) and the shell (4).