CN111365994A

CN111365994A - Novel tube furnace

Info

Publication number: CN111365994A
Application number: CN202010241010.XA
Authority: CN
Inventors: 杨杰; 谭兆钧
Original assignee: North China University of Water Resources and Electric Power
Current assignee: North China University of Water Resources and Electric Power
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-07-03

Abstract

The utility model provides a novel tube furnace, including the tube furnace, all be provided with the recess in box and the lower box on the tube furnace, it holds the chamber with the internal recess cooperation formation quartz capsule of lower box to go up the box, the both sides of the recess of box all are provided with sealing member under, the shape that the quartz capsule held the chamber is unanimous with the quartz capsule shape, sealing member is including the support ring of fixing box both sides under, the position of support ring is corresponding with the position that the quartz capsule held the both ends in chamber, install sealing door on the support ring, sealing door includes the end cover, be provided with on the end cover and hold the breather pipe of chamber intercommunication with the quartz capsule, the end cover is threaded connection with the support ring, the cover is equipped with the. The shape of the quartz accommodating cavity is consistent with that of the quartz tube, so that the quartz tube can be heated uniformly during heating, and the heat loss is small. The sealing member can be conveniently installed and has good sealing effect. Meanwhile, the shape of the crucible is matched with that of the quartz tube, so that the crucible can be conveniently placed in the quartz tube and is easy to keep stable.

Description

Novel tube furnace

Technical Field

The invention belongs to the technical field of metallurgy, glass and heat treatment, and particularly relates to a tubular furnace used in the heat treatment process.

Background

The tube furnace is a high-performance high-energy-saving novel electric furnace developed by adopting the international advanced technology, and comprises a plurality of tube furnace types such as a single tube, a double tube, a horizontal type, an openable type, a vertical type, a single temperature zone, a double temperature zone, a three temperature zone and the like. The method is mainly applied to experiments and small-batch production of universities and colleges, scientific research institutions, industrial and mining enterprises and the like. The device has the advantages of safety, reliability, simple operation, high temperature control precision, good heat preservation effect, large temperature range, high temperature uniformity of the hearth, multiple temperature zones, optional atmosphere, vacuum-pumping furnace type and the like.

A single set point or 30 segment programmable controller may be selected. The energy-saving ceramic fiber material and the double-layer structure can reduce the surface temperature to normal temperature. The temperature equalizing area is long, the operation is simple and convenient, the sealing is reliable, the comprehensive performance index is higher, and the temperature equalizing device is at the leading level in China. The furnace tube can be made of heat-resistant steel, quartz glass, ceramic tube, etc.

Use the tube furnace among the heat treatment process, present ordinary tube furnace sets up the quartz capsule including the box that has heating function in the box and holds the chamber, and the box both sides are sealed by sealed ring flange, and the quartz capsule is placed and is held the intracavity at the quartz capsule, and the crucible is placed in the quartz capsule. The quartz tube accommodating cavity of the tube furnace is large, and the crucible is a common crucible, so that only a crucible with a diameter much smaller than the inner diameter of the quartz tube is selected.

Taking the preparation of the NiCoP catalyst as an example, the NiCoO nano rod obtained by hydrothermal method is washed and dried, and then is put into a tube furnace together with sodium hypophosphite powder, and the NiCoP hydrogen evolution catalyst is obtained by annealing under the protection of argon. At present, if a common tube furnace is used in the heat treatment process, a crucible containing a sample is difficult to keep stable when being placed in a quartz tube, and sealing flanges on two sides of the quartz tube are difficult to install.

Disclosure of Invention

Therefore, the structure of the tube furnace needs to be redesigned, and the operation flow of the tube furnace is simplified.

The invention aims to provide a novel tube furnace, which is convenient and rapid in sealing operation at two ends and easy to keep stable when a crucible is placed into a quartz tube.

The object of the invention is achieved in the following way:

the utility model provides a novel tube furnace, includes the tube furnace, all is provided with the recess in box and the lower box on the tube furnace, goes up the box and forms the quartz capsule with the internal recess cooperation of lower box and holds the chamber, and the both sides of the recess of box all are provided with sealing member under, the shape that the quartz capsule held the chamber is consistent with the quartz capsule shape, sealing member is including the support ring of fixing box both sides under, and the position of support ring is corresponding with the position that the quartz capsule holds the both ends in chamber, installs sealing door on the support ring, and sealing door includes the end cover, is provided with on the end cover to hold the breather pipe of chamber intercommunication with the quartz capsule, and the end cover is threaded connection with the support ring, and the cover is equipped.

Above-mentioned novel tube furnace, still the cover is equipped with the apron on the end cover, and the external diameter of apron is the same with the external diameter of support ring.

Above-mentioned novel tube furnace, still be provided with rotatory handle on the end cover.

Above-mentioned novel tube furnace, the quartz capsule holds the intracavity and sets up the quartz capsule, places the crucible in the quartz capsule, and the bottom of crucible is the plane shape, the both sides face of crucible for with quartz capsule shape assorted arcwall face.

By adopting the technical scheme, the invention has the beneficial effects that:

the shape of the quartz accommodating cavity is consistent with that of the quartz tube, so that the quartz tube can be heated uniformly during heating, and the heat loss is small. The sealing member can be conveniently installed and has good sealing effect. Meanwhile, the shape of the crucible is matched with that of the quartz tube, so that the crucible can be conveniently placed in the quartz tube and is easy to keep stable.

Drawings

FIG. 1 is a schematic diagram of the present invention.

FIG. 2 is a schematic view of a sealing door

FIG. 3 is a schematic view of a crucible structure for quartz tube.

FIG. 4 is a schematic view of a crucible structure.

Detailed Description

The novel tube furnace shown in fig. 1 to 4 comprises a tube furnace, wherein grooves are formed in an upper box body 1 and a lower box body 2 of the tube furnace, a quartz tube accommodating cavity 3 is formed by matching the grooves in the upper box body and the lower box body, sealing members are arranged on two sides of the groove in the lower box body, the shape of the quartz tube accommodating cavity is consistent with that of the quartz tube, each sealing member comprises a support ring 4 fixed on two sides of the lower box body, the positions of the support rings correspond to the positions of two ends of the quartz tube accommodating cavity, a sealing door 5 is arranged on each support ring and comprises an end cover 6, a vent pipe 7 communicated with the quartz tube accommodating cavity is arranged on each end cover, the end cover is in threaded connection with the support rings, and a sealing ring is sleeved on each end cover.

In order to limit and play a role of dust prevention at the same time, the end cover is also sleeved with a cover plate 9, the outer diameter of the cover plate is the same as that of the support ring, and thus the cover plate completely covers the end part of the support ring.

The end cover is also provided with a rotating handle 10, so that the end cover is convenient to mount and dismount.

According to the invention, the quartz tube 11 is arranged in the quartz tube containing cavity, the crucible 12 is placed in the quartz tube, the bottom of the crucible is in a plane shape, and two side surfaces of the crucible are arc surfaces matched with the shape of the quartz tube, so that when the crucible is placed, the crucible is easy to keep stable, and the crucible can be conveniently and quickly placed in the quartz tube.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a novel tube furnace, includes the tube furnace, all is provided with the recess in box and the lower box on the tube furnace, goes up the box and forms the quartz capsule with the internal recess cooperation of lower box and holds the chamber, all is provided with sealing member, its characterized in that in the both sides of the recess of box down: the shape that the chamber was held to the quartz capsule is unanimous with the quartz capsule shape, sealing member is including the support ring of fixing box both sides down, and the position of support ring is corresponding with the position that the quartz capsule held the both ends in chamber, installs sealing door on the support ring, and sealing door includes the end cover, is provided with on the end cover and holds the breather pipe that the chamber communicates with the quartz capsule, and the end cover is threaded connection with the support ring, and the cover is equipped with the sealing washer on the end cover.

2. The new tube furnace as claimed in claim 1, wherein: the end cover is also sleeved with a cover plate, and the outer diameter of the cover plate is the same as that of the support ring.

3. The new tube furnace as claimed in claim 1, wherein: the end cover is also provided with a rotating handle.

4. The new tube furnace as claimed in claim 1, wherein: the quartz tube is arranged in the quartz tube containing cavity, the crucible is placed in the quartz tube, the bottom of the crucible is in a planar shape, and two side faces of the crucible are arc-shaped faces matched with the shape of the quartz tube.