CN216663156U

CN216663156U - Recovery device for high-temperature molten salt flowing into quenching salt tank

Info

Publication number: CN216663156U
Application number: CN202123173511.8U
Authority: CN
Inventors: 陈亚杰; 杨斯一; 孙伟; 马志杰; 刘长建; 郭睿东
Original assignee: LUOYANG LUOLING BEARING SCIENCE AND TECHNOLOGY CO LTD
Current assignee: LUOYANG LUOLING BEARING SCIENCE AND TECHNOLOGY CO LTD
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-03
Anticipated expiration: 2031-12-17

Abstract

A recovery device for high-temperature molten salt flowing into a quenching salt tank relates to a roller hearth furnace salt quenching production line and comprises a salt evaporator, a salt dissolving tank and a rear cleaning tank, wherein an upper outlet for water vapor to flow out is formed in the top of the salt evaporator, a lower outlet for salt solution to flow out is formed in the bottom of the salt evaporator, a salt solution pipeline is arranged between the lower outlet and an inlet of the salt dissolving tank, a water vapor pipeline is connected between the upper outlet and the rear cleaning tank, the water vapor pipeline sequentially passes through the lower outlet and is communicated with an inlet of the rear cleaning tank after passing through the salt dissolving tank, the water vapor pipeline is communicated with the lower outlet and is arranged outside the salt solution pipeline, the water vapor pipeline is arranged at the inlet of the cleaning tank in a sealing manner, and a heat insulation layer made of refractory fibers is arranged outside the water vapor pipeline; the utility model has simple structure and convenient use, effectively reduces the labor intensity of workers and improves the production efficiency.

Description

Recovery device for high-temperature molten salt flowing into quenching salt tank

Technical Field

The utility model relates to a salt quenching production line of a roller hearth furnace, in particular to a recovery device for high-temperature molten salt flowing into a quenching salt tank.

Background

As is known, in the prior domestic roller hearth furnace salt quenching production line, most of quenching medium salt is a mixture of KNO3 and NaNO2 in a ratio of about 1:1, and water with the content of less than 1 percent is added. After quenching, a large amount of salt is brought to a cleaning tank along with a workpiece every day, and the salt in the cleaning tank is evaporated by a salt evaporator and then recovered. At present, the recovery of the evaporated molten salt (the temperature is about 200 ℃, the freezing point of the molten salt is about 155 ℃), all the molten salt is recovered by adopting a special salt receiving trolley (the salt is discharged once in 12 hours, the amount of the molten salt is about 35 liters each time), the special salt receiving trolley is arranged at the lower part of a salt evaporator, about 1 hour is needed after the salt evaporator is fully received, all the liquid salt is changed into solid salt, and the solid salt is taken out from the trolley by manpower after the temperature of the salt is reduced to the room temperature and is broken into small blocks by a hammer to be added into a quenching salt tank. The method has high labor intensity of workers, and the added small solid salt blocks need a certain time for melting and have certain influence on the quenching of the next pan; when the molten salt needs electric energy to cause certain waste, tiny salt fragments fly to the ground of a workshop and the like in the process of crushing the salt by using a hammer, and secondary environmental pollution is caused.

Disclosure of Invention

In order to overcome the defects in the background art, the utility model discloses a recovery device for high-temperature molten salt flowing into a quenching salt tank.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a recovery unit of high temperature fused salt inflow quenching salt groove, including the salt evaporimeter, dissolve salt groove and back washing tank, the top of salt evaporimeter is equipped with the last export that vapor flows out, the bottom of salt evaporimeter is equipped with the lower export that the salt solution flows out, be equipped with the salt solution pipeline between the import of export and solution salt groove under, be connected with the vapor pipeline between last export and back washing tank, the vapor pipeline is in proper order through export down, dissolve behind the salt groove with the entry intercommunication of back washing tank, the vapor pipeline just sets up the outside at the salt solution pipeline with export intercommunication down, the vapor pipeline is in the sealed setting of the entrance of washing tank, the outside at the vapor pipeline is equipped with the heat preservation of refractory fiber material.

The high-temperature molten salt flows into a recovery device of a quenching salt tank, a steam pipeline is a 304 stainless steel 2-inch pipe, a salt solution pipeline is a 304 stainless steel 1-inch pipe, and the thickness of the pipes is 2-3 mm; a space for introducing water vapor is arranged between the water vapor pipeline and the saline solution pipeline.

The high-temperature molten salt flows into a recovery device of the quenching salt tank, funnel-shaped openings are used for an upper outlet and a lower outlet, and the thickness of each opening is 3-4 mm.

The high-temperature molten salt flows into a recovery device of the quenching salt tank, and the thickness of the heat-insulating layer is 1.5-2.5 cm.

The high-temperature molten salt flows into a recovery device of the quenching salt tank, the inlet height of the salt dissolving tank is slightly lower than the lower outlet of the salt evaporator, and the inlet height of the cleaning tank is slightly lower than the inlet height of the salt dissolving tank.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

according to the recovery device for the high-temperature molten salt flowing into the quenching salt tank, the lower outlet is formed in the bottom of the salt evaporator, the salt solution automatically flows into the salt dissolving tank, the water vapor pipeline is arranged outside the salt solution pipeline, the heat insulation layer is arranged outside the water vapor pipeline, the phenomenon that the salt solution is solidified and blocks the pipeline due to temperature reduction in the automatic flow process is effectively prevented, the heat of the water vapor is fully utilized, the recovery device is simple in structure and convenient to use, the labor intensity of workers is effectively reduced, and the production efficiency is improved.

Drawings

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

In the figure: 1. an upper outlet; 2. a water vapor conduit; 3. water vapor; 4. a heat-insulating layer; 5. a salt evaporator; 6. a salt solution; 7. a lower outlet; 8. a saline solution conduit; 9. a salt dissolving tank; and (10) cleaning the tank after the operation.

Detailed Description

The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.

The recovery device for high-temperature molten salt flowing into the quenching salt tank, which is described by combining with the attached figure 1, comprises a salt evaporator 5, a salt dissolving tank 9 and a rear cleaning tank 10, wherein the top of the salt evaporator 5 is provided with an upper outlet 1 for water vapor 3 to flow out, the bottom of the salt evaporator 5 is provided with a lower outlet 7 for salt solution 6 to flow out, a salt solution pipeline 8 is arranged between the lower outlet 7 and an inlet of a salt dissolving tank 9, a steam pipeline 2 is connected between the upper outlet 1 and a rear cleaning tank 10, the steam pipeline 2 sequentially passes through the lower outlet 7 and the salt dissolving tank 9 and then is communicated with an inlet of the rear cleaning tank 10, the steam pipeline 2 is communicated with the lower outlet 7 and is arranged outside the salt solution pipeline 8, the steam pipeline 2 is arranged at the inlet of the cleaning tank 10 in a sealing manner, the inlet height of the salt dissolving tank 9 is slightly lower than the lower outlet 7 of the salt evaporator 5, and the inlet height of the cleaning tank 10 is slightly lower than the inlet height of the salt dissolving tank 9; funnel-shaped openings are used for the upper outlet 1 and the lower outlet 7, and the thickness of the openings is 3-4 mm; a heat-insulating layer 4 made of refractory fiber is arranged outside the water vapor pipeline 2, and the thickness of the heat-insulating layer 4 is 1.5-2.5 cm; the steam pipeline 2 is a 2-inch 304 stainless steel pipe, the salt solution pipeline 8 is a 1-inch 304 stainless steel pipe, and the thickness of the pipes is 2-3 mm; a space for introducing the water vapor 3 is provided between the water vapor pipe 2 and the saline solution pipe 8.

When the recovery device for the high-temperature molten salt flowing into the quenching salt tank is implemented, when the recovery device is used, the salt solution 6 in the salt evaporator 5 is opened through the valve on the lower outlet 7, automatically flows into the salt solution pipeline 8 and finally flows into the salt dissolving tank 9, meanwhile, the valve of the upper outlet 1 on the top of the salt evaporator 5 is opened, the water vapor 3 is wrapped outside the salt solution pipeline 8 through the water vapor pipeline 2, the salt solution 6 is effectively prevented from being solidified in the salt solution pipeline 8, and the liquefied water vapor 3 flows into the cleaning tank 10.

The present invention is not described in detail in the prior art.

The embodiments selected for the purpose of disclosing the utility model, are presently considered to be suitable, it being understood, however, that the utility model is intended to cover all variations and modifications of the embodiments falling within the scope of the inventive concept and the utility model.

Claims

1. The utility model provides a recovery unit of high temperature fused salt inflow quenching salt groove, includes salt evaporator, dissolves salt groove and back washing tank, characterized by: the top of salt evaporimeter is equipped with the last export that vapor flows, the bottom of salt evaporimeter is equipped with the lower export that the salt solution flows, export under and be equipped with the salt solution pipeline between the import of dissolving the salt groove, be connected with the vapor pipeline between last export and back washing tank, the vapor pipeline is in proper order through export down, dissolve behind the salt groove with the entry intercommunication of back washing tank, the vapor pipeline with export intercommunication down and set up the outside at the salt solution pipeline, the vapor pipeline is in the sealed setting of the entrance of washing tank, the outside at the vapor pipeline is equipped with the heat preservation of refractory fiber material.

2. The apparatus for recovering molten salt of high temperature flowing into a quenching salt bath as claimed in claim 1, wherein: the steam pipeline is a 304 stainless steel 2-inch pipe, the salt solution pipeline is a 304 stainless steel 1-inch pipe, and the thickness of the pipes is 2-3 mm; a space for introducing water vapor is arranged between the water vapor pipeline and the saline solution pipeline.

3. The apparatus for recovering molten salt of high temperature flowing into a quenching salt bath as claimed in claim 1, wherein: funnel-shaped openings are used for the upper outlet and the lower outlet, and the thickness of the openings is 3-4 mm.

4. The apparatus for recovering molten salt of high temperature flowing into a quenching salt bath as claimed in claim 1, wherein: the thickness of the heat-insulating layer is 1.5-2.5 cm.

5. The apparatus for recovering molten salt of high temperature flowing into a quenching salt bath as claimed in claim 1, wherein: the inlet height of the salt dissolving tank is slightly lower than the lower outlet (7) of the salt evaporator, and the inlet height of the cleaning tank is slightly lower than the inlet height of the salt dissolving tank.