CN201793224U

CN201793224U - Pneumatic sealing control device of discharge port of screw conveyor

Info

Publication number: CN201793224U
Application number: CN201020527578XU
Authority: CN
Inventors: 颜旺洪; 颜旺东
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2011-04-13
Anticipated expiration: 2020-09-08

Abstract

The utility model provides a pneumatic sealing control device of a discharge port of a screw conveyor, which comprises a screw conveying tube, a screw shaft, a sealing cover, a connecting seat and a cylinder, wherein the sealing cover is fixed on the connecting seat, the connecting seat is fixedly connected with the piston rod of the cylinder, a shaft hole is formed in the center of the sealing cover, an axial sealing surface is arranged on the outer side of the shaft hole, the sealing cover is sleeved outside the screw shaft and is controlled by the cylinder. In the discharge stop mode, the interface between the sealing cover and the end surface of the screw conveying tube and the interface between the inner bore of the sealing cover and the screw shaft are both in the sealing and plugging state. In the discharge mode, the sealing cover keeps away from the exit end surface of the screw conveying tube. According to the technical requirements of material conveying, the device seals the discharge port at the appropriate time, effectively solves the self-discharging problem in case of feed stop, ensures the packing meter accuracy of the packing scale, avoids waste and environmental pollution caused by material outflow, and improves the working environment of the workers.

Description

The pneumatic sealing control setup of auger conveyer discharging opening

Technical field

The utility model relates to packing, batching machine field, relates in particular to a kind of and ration package scale, the matching used auger charger of burden balance.

Background technology

Ration package scale, contain burden balance when materials such as weigh packing powdery, fine particulate, must use the auger conveyer to carry out feeding, after scale completely stops charging, still have material and from speed auger conveyor blade, flow out automatically, enter in scale bucket or the weighing bag, have a strong impact on weighing accuracy; The powder such as the starch of, good fluidity low and when containing the premixed feed of stone flour, potter's clay, bone meal and mineral element thereof when the can aqueous ingredients, under the out-of-run situation of speed auger conveyer, material can flow automatically and enter in scale bucket or the weighing bag, if the scale sluice gate is not shut or the weighing bag does not put the folder bag bucket, material is from failing to be convened for lack of a quorum on the ground, material rushes at the every nook and cranny, workshop as mud-rock flow, not only can cause the waste of material, and can cause dust from flying, the gross pollution production on-site environment, the work capacity of sweeping and clearing up is big, and labour intensity is also than higher.In order to prevent the gravity flow of packing scale material, people adopt the length that increases the auger conveyer or reduce the pitch of auger or the auger conveyer is made the oblique auger that outlet is higher than import, perhaps the former several schemes are taken into account consideration, though these improvement projects can make moderate progress to the gravity flow of material, but can not thoroughly effect a radical cure, the enforcement of these schemes has not only increased cost, increased the length dimension of auger conveyer again, entire equipment is not compact, floor area is big, thereby, can not apply in the actual production.

The utility model content

The purpose of this utility model is to provide a kind of pneumatic sealing control setup of auger conveyer discharging opening, when auger stops discharging, and the discharging opening of the instantaneous closed auger conveyer of its energy; When auger began discharging, it can instantaneously open the discharging opening of auger conveyer again, thereby can effectively overcome deficiency of the prior art.

The technical scheme that the utility model is taked is as follows:

The pneumatic sealing control setup of described auger conveyer discharging opening, it is characterized in that: it comprises the auger delivery pipe, screw-conveyer-shaft, capping, Connection Block and cylinder, capping is fixed on the Connection Block, Connection Block is captiveed joint with the piston rod of cylinder, center at capping is provided with axis hole, be provided with the side seal face in the outside of axis hole, capping is contained on the screw-conveyer-shaft by shaft hole sleeve, capping is controlled by cylinder, when stopping the discharging state, cylinder is in contraction state, at this moment, and between capping and the auger delivery pipe end face and all be in the sealing sealed condition between capping endoporus and the screw-conveyer-shaft, when the discharging state, cylinder is in extended configuration, and at this moment, capping is away from the exit end face of auger delivery pipe.

Further, seal by the cone match hermetically-sealed construction or by end face applying hermetically-sealed construction between capping and the auger delivery pipe; Seal by cone match or end face seal structure between capping and the screw-conveyer-shaft.

Further, described cylinder is two bar cylinders or three bar cylinders.

Owing to set up pneumatic sealing control setup at the discharging opening of auger charger, it can be according to the technological requirement of defeated material, discharging opening is carried out shutoff in good time, effectively solve material when stopping charging from flow problem, can guarantee packing scale package metro-measuring accuracy, prevent waste and environmental pollution problem that the material outflow causes, also improved workman's work situation.When ration package scale, burden balance during at materials such as weigh packing powdery, fine particulates, on the auger conveyer of adapted, be equipped with this device, after scale completely stops charging, can effectively stop the automatic outflow phenomenon of material in the auger conveyor blade, prevent that material from entering in scale bucket or the weighing bag out of control, guarantees weighing accuracy.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of capping shutoff;

Fig. 3 is application state figure of the present utility model;

Among the figure: 1-auger delivery pipe; The 2-screw-conveyer-shaft; 3-capping 4-Connection Block; The 5-cylinder; The 6-axis hole; 7-side seal face; The 8-feeder hopper; The 9-discharge bucket.

The specific embodiment

Below in conjunction with the description of drawings specific embodiment of the present utility model:

Accompanying drawing 1～Fig. 3 is arranged on a kind of structural representation between feeder hopper 8 and the discharge bucket 9 for the utility model, the pneumatic sealing control setup of described auger conveyer discharging opening, comprise auger delivery pipe 1, screw-conveyer-shaft 2, capping 3, Connection Block 4 and cylinder 5, capping 3 is fixed on the Connection Block 4, described cylinder 5 is two bar cylinders, Connection Block 4 is captiveed joint with two synchronous piston bars of cylinder 5, be provided with axis hole 6 at the center of capping 3, be provided with side seal face 7 in the outside of axis hole 6, this side seal face 7 is the conical surface seal face, capping 3 is sleeved on the screw-conveyer-shaft 2 by axis hole 6, and capping 3 is by cylinder 5 control, when the auger conveyer is in when stopping the discharging state, cylinder 5 is in contraction state, at this moment, all by cone match, make material be in sealed condition between capping 3 and auger delivery pipe 1 end face and between capping 3 endoporus and the screw-conveyer-shaft 2, when auger conveyer during at the discharging state, cylinder 5 is in extended configuration, and at this moment, capping 3 is away from the exit end face of auger delivery pipe 1.

In last example, also can adopt the end face of capping 3 and the end face applying hermetically-sealed construction of auger delivery pipe 1 between capping 3 and the auger delivery pipe 1 and seal, seal by end face seal structure between capping 3 and the screw-conveyer-shaft 2.

Claims

1. the pneumatic sealing control setup of an auger conveyer discharging opening, it is characterized in that: it comprises auger delivery pipe (1), screw-conveyer-shaft (2), capping (3), Connection Block (4) and cylinder (5), capping (3) is fixed on the Connection Block (4), Connection Block (4) is captiveed joint with the piston rod of cylinder (5), be provided with axis hole (6) at the center of capping (3), be provided with side seal face (7) in the outside of axis hole (6), capping (3) is sleeved on the screw-conveyer-shaft (2) by axis hole (6), capping (3) is controlled by cylinder (5), when stopping the discharging state, cylinder (5) is in contraction state, at this moment, all be in the sealing sealed condition between capping (3) and auger delivery pipe (1) end face and between capping (3) endoporus and the screw-conveyer-shaft (2), when the discharging state, cylinder (5) is in extended configuration, and at this moment, capping (3) is away from the exit end face of auger delivery pipe (1).

2. according to the pneumatic sealing control setup of the described auger conveyer of claim 1 discharging opening, it is characterized in that: seal by the cone match hermetically-sealed construction between capping (3) and the auger delivery pipe (1), or seal by end face seal structure; Seal by cone match or end face seal structure between capping (3) and the screw-conveyer-shaft (2).

3. according to the pneumatic sealing control setup of the described auger conveyer of claim 1 discharging opening, it is characterized in that: described cylinder (5) is two bar cylinders or three bar cylinders.