SU1729926A1 - Device for emptying bags with loose material - Google Patents

Abstract

The invention relates to devices for unloading paper bags with bulk material and can be used in the metallurgical industry, in particular in the production of mixtures of various powders supplied in paper bags, as well as in the chemical industry, in the building materials industry and in construction. The purpose of the invention is to improve reliability. The wedge 12 enters the incision of the bag with the saw 10 and bends it, holding it onto the rotor 8. The bulk material is poured out. The empty bag retracts the flap, begins to gradually withdraw and falls into the casing 4. 3 Il.

Description

The invention relates to devices for the unloading of paper bags with bulk materials and can be used in the metallurgical industry, in particular in the production of waste mixtures from various powders supplied in paper bags, as well as in the chemical industry, in the building materials industry and in construction.

A device for unloading bags of bulk materials is known, comprising a chamber with a loading tray, a chute for bulk material and an empty bag nozzle, a spike rotor located in the chamber, a mechanism for cutting the bags, a wedge for opening them and a device for removing empty bags.

It is also known a device for unloading bags with bulk materials, comprising a housing with a loading tray, a nozzle for exiting bulk material and an opening for exiting empty bags, a spike rotor housed in the housing, a cutting mechanism, a wedge behind it to open the cut bags, a mechanism for embossing and device for removing empty bags.

The disadvantage of this device is its unreliable operation, the inefficient delivery of empty bags from the nozzle due to the removal of the bags at the place of abutment of the nozzle to the rotor surface.

The aim of the invention is to increase reliability in operation,

This goal is achieved in that the device for unpacking bags with bulk materials, comprising a housing with a loading tray, a nozzle for exiting bulk materials and an opening for exiting empty bags, a spike rotor housed in the housing, a cutting mechanism, a wedge for opening the cut bags , the mechanism for knocking them out and the device for removing empty bags is a vertical casing with a chute in its lower part, the front wall of which consists of two parts arranged one and above the other, the upper of which is bent, is placed in the opening of the housing to exit the empty bags and has slots for the passage of the spikes of the rotor, and the other is a damper spring-loaded and hinged with the lower end mounted obliquely in the direction of estrus.

FIG. 1 shows a device, a longitudinal section; in FIG. 2, node I in FIG. one ; in fig. 3 shows section A-A in FIG. 2

The bag unloading device consists of a body 1 having a loading tray 2, a point 3 for unloading bulk material and a vertical casing 4 of a device for removing empty bags. The casing 4 contains a front wall consisting of

two parts located one above the other, the top 5 of which are bent and placed in the opening of the housing 1 for exiting the empty bags, and the other is spring-loaded and hinged

0 reinforced by the lower end of the valve 6, mounted obliquely in the direction of estrus. Inside the housing 1 on the shaft 7 is placed a rotor 8 with a convex side surface and with spikes 9. Above the rotor 8 on the shaft 7 is fixed

5 a circular saw 10 for cutting bags of mechanisms 11 for controlling its removal from the rotor.

Below the saw 10, a wedge 12 is pivotally attached to open the cut bag, made in the form of two arcuate rods diverging downwards. At the junction, the rods form a sharp edge, which is located in the plane of the saw blade.

5B of the middle part, the wedge rods are joined by a bracket, by means of which they rest on a cam 14, made in the form of a ratchet wheel. On the shaft 15 pivotally on eccentrics suspended roar.

0 The inclined flap 6 is preloaded by the spring 16. The rotor 8 is made with slots radially located on the surface in contact with the bag body, and the upper part 5 of the front wall is made with slots

5 for the passage of the spikes of the rotor and with the protrusions for the slots of the rotor 8. On the end walls of the chamber there is a hingedly installed device for beating bags, made in the form of two rods connected by a hub.

The upper part 5 of the front wall is made, starting from the end of the wedge 12 along the ascending curve a, passing into the inclined part tangentially to it

5 housing walls. The inclined part of the housing wall is deflected from the vertical axis up to 30 °, ensuring the free fall of the bag down. The curve passes into the sloping part of the wall in a place located at distance A from the rotor axis equal to or greater than the radius of the rotor with spikes, and the distance B from the rotor to the beginning of the curve should be less than the radius of the rotor.

The device works as follows.

The rotary drives of the rotor, the screen and the circular saw are activated. Through the loading tray 2, the bag with the bulk material enters the rotor 8, piles on the spikes 9, keeping them moving with the rotor down

Claims (1)

The upper part 5 of the front wall is made starting from the end of the wedge 12 along an ascending curve a, passing into the inclined part relative to it to the walls of the body. The inclined part of the housing wall is deflected from the vertical axis up to 30 °, ensuring the free fall of the bag down. The curve passes into the sloping part of the wall at a place located at a distance A from the rotor axis equal to or greater than the radius of the rotor with spikes, and the distance B from the rotor to the beginning of the curve should be less than the radius of the rotor. The device works as follows. The rotor, screen and circular saw drives are activated. Through the loading tray 2, the bag with the bulk material enters the rotor 8, falls on the spikes 9, keeping them moving with the rotor down