CN203109160U

CN203109160U - Drying tower for cast waste sand roaster

Info

Publication number: CN203109160U
Application number: CN 201320075214
Authority: CN
Inventors: 郑隆海
Original assignee: SHIYAN CHANGJIANG RIVER MOULDING MATERIAL CO Ltd
Current assignee: SHIYAN CHANGJIANG RIVER MOULDING MATERIAL CO Ltd
Priority date: 2013-02-18
Filing date: 2013-02-18
Publication date: 2013-08-07
Anticipated expiration: 2023-02-18

Abstract

The utility model discloses a drying tower for a cast waste sand roaster, which is arranged at the top of the roaster and comprises a base, wherein a drying cylinder is connected to the base; a group of sand collecting and separating devices is mounted in each of the base and the drying cylinder and consists of a hopper-type sand collecting device and a tapered sand separating device located above the sand collecting device; the sand collecting device and the tapered sand separating device are connected through a bearing bar; a top cover is mounted at the top of the drying cylinder; two exhaust ports and one sand separating device are arranged on the top cover; an hourglass in a tapered structure and welded by a plurality of reinforcement bars or round tubes is arranged in the sand separating device; a gap ranging from 10 mm to 20 mm is formed between the plurality of reinforcement bars or round tubes which form the hourglass; a sand feeding device is further connected to the sand separating device; and an upward inclined sand feeding tube is arranged on the sand feeding device. The drying tower for the cast waste sand roaster can make full use of high-temperature tail gas heat energy generated by the roaster to preheat the cast waste sand, the equipment investment is small, and the preheating effect is good.

Description

A kind of cast waste sand roaster drying tower

Technical field

The utility model relates to cast waste sand production equipment technical field, more particularly, relates in particular to a kind of cast waste sand roaster drying tower.

Background technology

The cast waste sand of casting industry is before entering the roaster roasting, to carry out preheating earlier, and the method that has general preheating antiquated sand now is at the other mixed body drying oven of a brick of building of roaster, the high-temperature tail gas that roaster produces is introduced the drying oven bottom from furnace roof by pipeline, antiquated sand is mentioned the drying oven top with bucket elevator and is added, after being preheated in the process that in body of heater, falls, mention the roaster top with bucket elevator again, enter roaster and carry out roasting, the tail gas after being utilized enters deduster from the drying oven top.

Adopt said method that cast waste sand is carried out preheating, have following shortcoming: at first, from the high-temperature tail gas that roaster comes out, introduce the drying oven bottom through pipeline, heat-energy losses is big in the introducing process, influences pre-heat effect; Secondly, antiquated sand needs by twice lifting when entering roaster, and equipment drops into many, and the process energy consumption is big; At last, after antiquated sand was preheated, when bucket elevator rises to roaster, the sand temperature was lowered, and pre-heat effect is had a greatly reduced quality.

The utility model content

The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of cast waste sand roaster drying tower is provided, and minimizing equipment drops into, and reduces heat-energy losses, takes full advantage of using waste heat from tail gas, improves pre-heat effect, reaches energy saving purposes to greatest extent.

For achieving the above object, cast waste sand roaster drying tower provided by the utility model, be arranged on the top of roaster, it comprises base, be connected with drying on the base, one group of collection/sub-sand device respectively is housed in described base and the drying, and described collection/sub-sand device is made up of a sand trap that is funnel type and a taper sand separator that is positioned at the sand trap top, is connected by reinforced bar support between sand trap and the taper sand separator; The top of described drying is equipped with top cover, top cover is provided with two exhaust outlets and a sub-sand device, be provided with the hourglass of the tapered structure that is welded by complex root reinforcing bar or pipe in the described sub-sand device, be separated with the space of 10～20mm between constituting between each reinforcing bar of this hourglass or the pipe, also be connected with sanding device on the sub-sand device, described sanding device is provided with the sandpipe that adds that tilts one day.

Because the utility model is arranged on the top of roaster, like this, the high-temperature tail gas that roaster produces can directly enter drying tower, cast waste sand in the tower is carried out preheating, and, after antiquated sand enters drying tower, under the effect of collection/sub-sand device through sub-sand repeatedly, collection sand has prolonged the time of antiquated sand preheating widely, and the high-temperature tail gas heat energy that roaster is produced is fully utilized, directly enter after antiquated sand is preheated and carry out roasting in the roaster, need not only reduced the input of equipment, and the sand temperature of antiquated sand not be guaranteed yet by the lifting again of bucket elevator, reduce the loss of heat energy, realized energy saving purposes.

Description of drawings

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

Fig. 2 is the structural representation after the utility model sanding device and the assembling of sub-sand device.

Among the figure: the 1-base; The 2-drying; 3-collection/sub-sand device; The 31-sand trap; 32-taper sand separator; The 33-reinforcing bar; The 4-top cover; The 5-exhaust outlet; 6-sub-sand device; The 61-hourglass; The 7-sanding device; 71-adds sandpipe.

The specific embodiment

The utility model is described in further detail below in conjunction with the embodiment in the accompanying drawing, but do not constitute any restriction of the present utility model.

Consult shown in Figure 1, a kind of cast waste sand roaster drying tower provided by the utility model, comprise base 1, be connected with drying 2 on the base 1, one group of collection/sub-sand device 3 respectively is housed in described base 1 and the drying 2, described collection/sub-sand device 3 is made up of sand trap 31 and a taper sand separator 32 that is positioned at sand trap 31 tops that is funnel type, passes through reinforcing bar 33 support and connection between sand trap 31 and the taper sand separator 32.

The top of described drying 2 is equipped with top cover 4, and top cover 4 is provided with two exhaust outlets 5 and a sub-sand device 6, and sub-sand device 6 is positioned at the center of top cover 4, and two exhaust outlets 5 lay respectively at the both sides of sub-sand device 6.Be provided with the hourglass 61 of the tapered structure that is welded by complex root reinforcing bar or pipe in the described sub-sand device 6, be separated with the space of 10～20mm between constituting between each reinforcing bar of this hourglass 61 or the pipe.On sub-sand device 6, also be connected with sanding device 7, described sanding device 7 be provided with tilt one day add sandpipe 71, as shown in Figure 2.

During use, the utility model is attached to the top of roaster, like this, the high-temperature tail gas that roaster produces can directly enter drying tower, and the cast waste sand in the tower is carried out preheating.Antiquated sand adds drying tower with bucket elevator from adding sandpipe 71, fall into sub-sand device 6 earlier, after being scattered in the sand curtain equably under the effect of hourglass 61, fall on the one group of collection/sub-sand device 3 in the drying 2, because the effect of taper sand separator 32, antiquated sand is spread out, and slowly fall in the sand trap 31 of below, antiquated sand contacts more abundant in the process of disperseing with high-temperature tail gas in the tower, heat exchange area is bigger, and heat exchange is more even.

The antiquated sand that drops in the sand trap 31 evenly glides along table inclined-plane in the sand trap, fall on next group collection/sub-sand device 3 from the following sand mouth of sand trap 31, so repeatedly through sub-sand repeatedly, collection sand, prolonged the time of antiquated sand preheating widely, the high-temperature tail gas heat energy that roaster is produced is fully utilized, directly enter after antiquated sand is preheated and carry out roasting in the roaster, need be by the lifting again of bucket elevator, not only reduced the input of equipment, and the sand temperature of antiquated sand also is guaranteed, reduce the loss of heat energy, realized energy saving purposes.Tail gas after being utilized enters deduster through exhaust outlet 5 and carries out flue gas ash removal.

Claims

1. cast waste sand roaster drying tower, be arranged on the top of roaster, it is characterized in that: comprise base, be connected with drying on the base, one group of collection/sub-sand device respectively is housed in described base and the drying, described collection/sub-sand device is made up of a sand trap that is funnel type and a taper sand separator that is positioned at the sand trap top, is connected by reinforced bar support between sand trap and the taper sand separator; The top of described drying is equipped with top cover, top cover is provided with two exhaust outlets and a sub-sand device, be provided with the hourglass of the tapered structure that is welded by complex root reinforcing bar or pipe in the described sub-sand device, be separated with the space of 10～20mm between constituting between each reinforcing bar of this hourglass or the pipe, also be connected with sanding device on the sub-sand device, described sanding device is provided with the sandpipe that adds that tilts one day.

2. cast waste sand roaster drying tower according to claim 1, it is characterized in that: described sub-sand device is positioned at the center of top cover, and two exhaust outlets lay respectively at the both sides of sub-sand device.