CN203887147U

CN203887147U - Lost foam sand-conditioning double-cooler system

Info

Publication number: CN203887147U
Application number: CN201420313448.4U
Authority: CN
Inventors: 谢德林
Original assignee: NANCHONG TONGJUN MACHINERY MANUFACTURING Co Ltd
Current assignee: NANCHONG TONGJUN MACHINERY MANUFACTURING Co Ltd
Priority date: 2014-06-13
Filing date: 2014-06-13
Publication date: 2014-10-22
Anticipated expiration: 2024-06-13

Abstract

The utility model relates to a lost foam sand-conditioning double-cooler system which mainly comprises a sand falling hopper, a vibrating screen, an elevator 1, a cooler 1 and a sand hopper. The lost foam sand-conditioning double-cooler system is characterized in that the system also is provided with an elevator 2 and a cooler 2, and the elevator 2 and the cooler 2 are connected into the system by virtue of change-over valves and connecting pipelines to form channels with three types of flow directions of molding sand. Compared with the conventional system, the lost foam sand-conditioning double-cooler system is additionally provided with one vertical cooler and a bucket elevator; the change-over valves are respectively arranged at the outlet of the bucket elevator 1 and the outlet of the cooler 1, so that the flow directions of the molding sand can be controlled, and therefore three types of combination channels are formed. When the used cooler is stopped as too many cold shots are accumulated, the change-over valve can be controlled at once so as to enable the other cooler to be used. Thus, under the condition that the system is not stopped, maintenance workers can conveniently maintain the stopped cooler, and the production schedule is not influenced.

Description

Disappearance sand is processed two chiller systems

Technical field

The utility model belongs to casting field, relates to lost foam casting, relates in particular to disappearance sand and processes two chiller systems.

Background technology

Lost foam casting is the advantage such as shaping efficiency is high, dimensional accuracy good, environmental protection owing to having, and is widely applied at home in recent years.The practical 20-50 object of this technique quartz sand, because its granularity is larger, therefore generally adopt upright radiator to carry out cooling to it.The operation principle of upright radiator is that the high pressure draught producing with roots blower makes molding sand in fluidized state, and to strengthen the heat exchange effect of molding sand and cooling water pipe, air-flow is also taken away part heat simultaneously.Impurity and the splashings of the larger particles that vibrating screen classifier mixes in can separated molding sand, but can not completely more short grained splashings be separated, and magnetic separator is also not so good to the separating effect of high temperature molding sand and impurity.So always there is a small amount of splashings to enter people's cooler, because its proportion is larger, be deposited on cooler bottom, be not easy to blow away; Along with the prolongation of service time, splashings is cumulative, and the load of roots blower strengthens gradually, until the electric current overrate of motor just must manually be shut down and safeguard.The mode of safeguarding is to open the access hole of cooler bottom, emits long-pending sand, and splashings is cleaned out.General shutdown is safeguarded and is at least needed the time more than half a day, larger to Influence of production.In addition, the path of molding sand in cooler is mainly vertical direction, and path is directly related with cooler height.When cooler is too high, roots blower cannot produce enough large blast and make molding sand boiling.So the cooling path length limited of molding sand, cooling effect is also restricted.In summer high temperature period, the effect of separate unit cooler is not ideal.

Utility model content

The utility model, for above-mentioned the deficiencies in the prior art, moves with different combinations by two upright radiators and conveying equipment are set, and can reduce plant maintenance to the impact of producing, and increase equipment starts rate, and can strengthen in summer cooling effect.

In order to realize the purpose of this utility model, intend adopting following technology:

Disappearance sand is processed two chiller systems, mainly comprise knockout bucket, vibratory sieve, 1# elevator, 1# cooler and sand hopper, this system is also provided with 2# elevator and 2# cooler, 2# elevator and 2# cooler are linked in system by switching valve and connecting line, and three kinds that form molding sand flow to passage.

Further, described switching valve is arranged on the exit of 1# elevator and 1# cooler.

Further, described 1# cooler and 2# cooler dispose respectively corresponding 1# blower fan and 2# blower fan, between its corresponding path 1 and path 2, are provided with stop valve 3.

Further, described 1# elevator and 2# elevator are bucket elevator.

The beneficial effects of the utility model are:

The utility model is compared with conventional system; a upright radiator and a bucket elevator have been increased; exit by the exit at 1# bucket elevator and 1# cooler respectively arranges a switching valve; can control the flow direction of molding sand; thereby form three kinds of combination passages; when the cooler in using is shut down because of splashings overheap; can control immediately switching valve; then use an other cooler; like this in the non-stop-machine situation of this system; maintain easily workman the cooler of shutting down is safeguarded, can not affect manufacturing schedule.Simultaneously in summer high temperature season, by 2# elevator, by the use that is together in series of two coolers, the cooling effect of twin-stage is enough to make molding sand temperature finally to drop to below 45 ℃, molding sand good cooling results.

Accompanying drawing explanation

Fig. 1 is the utility model schematic diagram;

Fig. 2 is the utility model embodiment 1 schematic diagram;

Fig. 3 is the utility model embodiment 2 schematic diagrames;

Fig. 4 is the utility model embodiment 3 schematic diagrames;

Fig. 5 is the utility model cooler and pipeline of fans schematic diagram.

The specific embodiment

Below in conjunction with the drawings and the specific embodiments, the utility model is described further;

As shown in Figure 1, disappearance sand is processed two chiller systems, mainly comprise knockout bucket, vibratory sieve, 1# elevator, 1# cooler and sand hopper, 1# elevator and 1# cooler outlet place are provided with switching valve, switching valve place is connected with 2# elevator and 2# cooler, like this, by the opening and closing of switching valve, three kinds that can form molding sand flow to passage.

Embodiment 1, and the first flows to passage, as shown in Figure 2, uses separately 1# cooler, and by the control of switching valve, molding sand is only from 1# cooler process, and 2# elevator and 2# cooler are in stand-by state.

Embodiment 2, and the second flows to passage, as shown in Figure 3, use separately 2# cooler, and by the control of switching valve, molding sand is only from 2# cooler process, and 1# cooler and 2# elevator are in stand-by state.

Embodiment 3, and the third flows to passage, and as shown in Figure 4,1# cooler and the series connection of 2# cooler are used, and molding sand first passes through 1# cooler, 2# elevator, and 2# cooler, 2# elevator only uses operation at 1# cooler and the series connection of 2# cooler.

First-classly to passage and second, during to passage, there is a cooler in stand-by state only using, can in the situation that not delaying production, carry out plant maintenance.When the cooler in using is shut down because of splashings overheap, can control immediately switching valve, then use an other cooler, then the cooler of shutting down be safeguarded.

At high temperature season, by 2# elevator, by the use that is together in series of two coolers, the cooling effect of twin-stage is enough to make molding sand temperature finally to drop to below 45 ℃, molding sand good cooling results.

The blower system of cooler, normally a cooler is equipped with a set of roots blower.In the utility model, be provided with two coolers, pipeline is done after suitable setting, can make the rate of starting of system higher.

As shown in Figure 5,1# blower fan supply 1# cooler, 2# blower fan supply 2# cooler, then with the airduct of a same diameter, two place's air blast pipeline connections are got up, and in position shown in Fig. 5, stop valve 1 ~ stop valve 5 is set.

(1) while normally using separate unit cooler, stop valve l, stop valve 2, stop valve 4, stop valve 5 are opened, and stop valve 3 is closed.If a Fans breaks down, by operation stop valve, also can realize a Fans and supply in turn two coolers, meet the instructions for use of circuit 1 and circuit 2:

As 1# blower fan breaks down, close stop valve 1 and stop valve 5, open stop valve 2, stop valve 3, stop valve 4, can realize 2# blower fan supply 1# cooler;

As 2# blower fan breaks down, close stop valve 2 and stop valve 4, open stop valve 1, stop valve 3, stop valve 5, can realize 1# blower fan supply 2# cooler.

When the series connection of (2) two coolers is used, shut off valve 3., independently supplying separately.

The utility model can make molding sand form three kinds and flow to passage, when a cooler wherein runs into after fault, and can be in the non-stop-machine situation of whole system; to out of order cooler maintenance; equipment operation ratio is high, and by two coolers are set, the cooling molding sand cooling effect that makes of twin-stage is better simultaneously.

Claims

1. disappearance sand is processed two chiller systems, comprise knockout bucket, vibratory sieve, 1# elevator, 1# cooler and sand hopper, it is characterized in that: this system is also provided with 2# elevator and 2# cooler, 2# elevator and 2# cooler are linked in system by switching valve and connecting line, and three kinds that form molding sand flow to passage.

2. disappearance sand according to claim 1 is processed two chiller systems, it is characterized in that: described switching valve is arranged on the exit of 1# elevator and 1# cooler.

3. disappearance sand according to claim 1 is processed two chiller systems, it is characterized in that: described 1# cooler and 2# cooler dispose respectively corresponding 1# blower fan and 2# blower fan, between its corresponding path 1 and path 2, is provided with stop valve 3.

4. disappearance sand according to claim 1 is processed two chiller systems, it is characterized in that: described 1# elevator and 2# elevator are bucket elevator.