CN219608256U - Temperature measuring device for vacuum smelting gas atomization powder preparation - Google Patents

Abstract

The utility model discloses a temperature measuring device for vacuum melting gas atomization powder preparation, which comprises a body, a temperature measuring instrument positioned outside the body, a thermocouple positioned inside the body, a temperature measuring gun head, a winding machine, a chain and a metal pipe, wherein the temperature measuring instrument is positioned outside the body; one end of the chain is fixed on the winding machine, and the other end of the chain is sequentially connected with the metal pipe, the temperature measuring gun head and the thermocouple; the temperature measuring instrument is electrically connected with the temperature measuring gun head. The utility model directly changes the fixed-length rod-type thermometer into a chain type thermometer, thereby saving space, being convenient for operation and improving temperature measurement efficiency.

Description

Temperature measuring device for vacuum smelting gas atomization powder preparation

Technical Field

The utility model relates to a temperature measuring device for vacuum melting gas atomization powder preparation, and belongs to the technical field of gas atomization powder preparation.

Background

Along with the development and progress of scientific technology, the requirements of various fields on materials are gradually increased, the application of nano material metal powder in 3D printing is wider and wider, the requirements on production are higher and the requirements are larger and larger. However, in the production process of nano-material metal powder, the temperature of the metal melt when it is subjected to plasma atomization is extremely high, usually several thousand degrees, so that it is required to perform a cooling treatment and then collect the metal powder.

In the process of cooling treatment, the temperature of the molten metal needs to be measured continuously, a temperature measuring tool commonly used in the prior art is a thermocouple, when the thermocouple is used for measuring the temperature, the thermocouple is required to be inserted into the molten metal, the thermocouple can be used for a plurality of times of common 2-3 times for low-melting-point materials (the materials can be thoroughly melted under 800 ℃) and can be reused for a plurality of times, but the service life of the thermocouple can only be one time for high-melting-point materials (1500-1800 ℃), so that the thermocouple is replaced once when the temperature measurement of the high-melting-point materials is carried out.

As shown in FIG. 1, the existing temperature measuring device is a thermocouple temperature measuring rod, and comprises a hollow cylindrical metal rod 3, wherein the rod body of the metal rod 3 is longer by about 150cm, a thermocouple 2 is installed at the bottom end, the thermocouple 2 is inserted into a molten metal by adjusting the tension nut 6 and then pressing down, real-time temperature measurement is carried out through a thermoelectric effect, and the thermocouple 2 is lifted up after the temperature measurement is finished. Although the thermocouple temperature measuring rod can quickly measure the temperature of molten metal, the thermocouple is difficult to install and take out after each temperature measurement because the metal rod body is longer and thinner, and the operation preparation time is long and the efficiency is low; meanwhile, because the metal rod 3 needs to be frequently pulled, the metal rod 3 is easy to be stressed and bent at the door valve 5, and the condition that the metal rod is difficult to take out or press down easily occurs in the temperature measuring operation, so that the normal temperature measurement cannot be performed. At this time, the metal rod 3 needs to be replaced or manually corrected, so that the production cost is increased.

Disclosure of Invention

The utility model provides a temperature measuring device for vacuum melting gas atomization powder preparation, which solves the problem of low efficiency of a thermocouple temperature measuring rod in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a temperature measuring device for vacuum melting gas atomization powder preparation comprises a body, a temperature measuring instrument positioned outside the body, a thermocouple positioned inside the body, a temperature measuring gun head, a winding machine, a chain and a metal pipe; one end of the chain is fixed on the winding machine, and the other end of the chain is sequentially connected with the metal pipe, the temperature measuring gun head and the thermocouple; the temperature measuring instrument is electrically connected with the temperature measuring gun head.

Preferably, an internal thread is arranged at the bottom of the metal tube, an external thread is arranged on the temperature measuring gun head, and the internal thread is matched with the external thread; the top of the metal pipe is welded or fixedly connected with the chain through bolts.

Preferably, a temperature measuring wire is arranged between the temperature measuring instrument and the temperature measuring gun head; the temperature measuring lead is fixed on the winding machine and then connected with the temperature measuring gun head so as to ensure that the temperature measuring gun head is in a vertical suspension state during the ascending and descending period of the thermocouple and ensure the accuracy of temperature measurement.

Preferably, two temperature measuring wires and two chains are arranged, and the two temperature measuring wires and the two chains are in one-to-one correspondence and fixedly connected, so that the two temperature measuring wires are prevented from winding.

Preferably, the length of the metal tube is 50-60 cm. The metal tube is used for preventing the temperature measuring wire from being scalded and damaged by high temperature.

Preferably, the temperature measuring gun head is clamped with the thermocouple, so that the thermocouple is convenient to replace.

Preferably, the body is also provided with a sampling valve and a side door, and the body is in sealing connection with the sampling valve and the side door, so that the vacuum degree of the smelting chamber in temperature measurement operation is ensured

Preferably, the distance between the winder and the upper end face of the thermocouple is larger than 50cm, so that the winder is prevented from overheating and generating faults.

Preferably, a control button is further arranged outside the body, and the control button is electrically connected with the winding machine and used for controlling the lifting and the lowering of the chain.

According to the utility model, the temperature measuring wire is directly connected with the temperature measuring gun head, and the temperature measuring wire is fixed on the chain, so that a metal rod is not required to be used for connecting the temperature measuring gun head and the thermocouple, and the rod-type temperature measuring instrument with fixed length is changed into a chain type temperature measuring instrument, thereby saving space, facilitating operation and improving temperature measuring efficiency.

Drawings

FIG. 1 is a schematic diagram of a prior art aerosolized powder process temperature measuring device;

fig. 2 is a schematic structural diagram of a temperature measuring device for vacuum melting gas atomization powder preparation.

Wherein: the device comprises a body, a thermocouple, a metal rod 3, a sampling valve 4, a gate valve 5, an elastic bolt 6, a periscope 7, a temperature measuring gun head 8, a side gate 9, a temperature measuring wire 10, a winding machine 11, a temperature measuring instrument 12, a chain 13, a control button 14, a smelting furnace 15 and a metal pipe 16.

Detailed Description

For a better understanding of the nature of the present utility model, reference should be made to the following description of the utility model taken in conjunction with the accompanying drawings.

The utility model is suitable for measuring the temperature of molten metal in the vacuum electrode induction melting gas atomization production process, in particular to a temperature measuring device for vacuum melting gas atomization powder preparation, which is shown in figure 2 and comprises a body 1, a temperature measuring instrument 12 positioned outside the body 1, a thermocouple 2 positioned inside the body 1, a temperature measuring gun head 8, a winding machine 11, a chain 13 and a metal pipe 16; one end of the chain 13 is fixed on the winding machine 11, and the other end is sequentially connected with the metal tube 16, the temperature measuring gun head 8 and the thermocouple 2; the temperature measuring instrument 12 is electrically connected with the temperature measuring gun head 8.

In some embodiments of the present utility model, the bottom of the metal tube 16 is provided with an internal thread, and the temperature measuring gun head 8 is provided with an external thread, and the internal thread is matched with the external thread. The top of the metal tube 16 is welded or bolted to the chain 13. The temperature measuring gun head 8 is clamped with the thermocouple 2, so that the thermocouple 2 can be replaced conveniently.

In some embodiments of the present utility model, the thermometer 12 is electrically connected to the thermometer gun head 8 through a temperature measuring wire 10; the temperature measuring lead 10 is fixed on the winding machine 11 and then connected with the temperature measuring gun head 8 so as to ensure that the temperature measuring gun head 8 is in a vertical hanging state during the ascending and descending period of the thermocouple 2, thereby ensuring the accuracy of temperature measurement.

In some embodiments of the present utility model, two temperature measuring wires 10 and two chains 13 are provided, and the two temperature measuring wires 10 are in one-to-one correspondence and fixedly connected with the two chains 13, so as to prevent the two temperature measuring wires 10 from winding.

According to the utility model, the temperature measuring wire 10 is directly connected with the temperature measuring gun head 8, and meanwhile, the temperature measuring wire 10 is fixed on the chain 13, so that a metal rod is not required to be used for connecting the temperature measuring gun head 8 and the thermocouple 2, and a rod type temperature measuring instrument with a fixed length is changed into a chain type temperature measuring instrument, thereby saving space and facilitating operation.

In order to ensure the vacuum state of the processing, the length of the metal tube 16 needs to meet the minimum condition of the elastic bolt 6, so the length of the metal tube 16 is 50-60 cm. The metal tube 16 is used for preventing the temperature measuring wire 10 from being scalded and damaged by high temperature.

In some embodiments of the present utility model, a control button 14 is further disposed on the outside of the body 1, and the control button 14 is electrically connected to the winding machine 11, for controlling the raising and lowering of the chain 13.

In the present utility model, the winder 11 may be selected to be a motor with a small power. The distance between the winder 11 and the upper end face of the thermocouple 2 is more than 50cm, so that the winder 11 is prevented from being overheated and generating faults.

The body 1 is also provided with a sampling valve 4 and a side door 9, and the body 1 is in sealing connection with the sampling valve 4 and the side door 9, so that the vacuum degree of the smelting chamber during temperature measurement operation is ensured.

When the temperature measuring device is used, the control button 14 is pressed down, the chain 13 starts to descend, the descending position of the thermocouple 2 is observed through the periscope 7, after the thermocouple 2 contacts molten metal in the smelting furnace 15, the control button 14 is pressed down, the chain 13 is lifted to a preset height and then stopped, and one-time temperature measurement is completed.

It should be noted that while the utility model has been described in terms of the above embodiments, there are many other embodiments of the utility model. Various modifications and variations of this utility model may be apparent to those skilled in the art without departing from the spirit and scope of this utility model, and it is intended to cover in the appended claims all such modifications and variations as fall within the true scope of this utility model.

Claims (9)

1. A temperature measuring device for vacuum melting gas atomization powder process, its characterized in that: comprises a body (1), a thermodetector (12) positioned outside the body (1), a thermocouple (2), a temperature measuring gun head (8), a winding machine (11), a chain (13) and a metal tube (16) positioned inside the body (1); one end of the chain (13) is fixed on the winding machine (11), and the other end of the chain is sequentially connected with the metal pipe (16), the temperature measuring gun head (8) and the thermocouple (2); the temperature measuring instrument (12) is electrically connected with the temperature measuring gun head (8).

2. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: the bottom of the metal tube (16) is provided with an internal thread, the temperature measuring gun head (8) is provided with an external thread, and the internal thread is matched with the external thread; the top of the metal tube (16) is fixedly connected with the chain (13) by welding or bolts.

3. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: a temperature measuring wire (10) is arranged between the temperature measuring instrument (12) and the temperature measuring gun head (8); the temperature measuring wire (10) is fixed on the winding machine (11) and then connected with the temperature measuring gun head (8).

4. A temperature measuring device for vacuum melting gas atomization powder process according to claim 3, wherein: the temperature measuring wires (10) and the chains (13) are respectively provided with two temperature measuring wires (10) and two chains (13) which are in one-to-one correspondence and fixedly connected.

5. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: the length of the metal tube (16) is 50-60 cm.

6. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: the temperature measuring gun head (8) is clamped with the thermocouple (2).

7. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: the sampling valve (4) and the side door (9) are further arranged on the body (1), and the body (1) is in sealing connection with the sampling valve (4) and the side door (9).

8. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: the distance between the winding machine (11) and the upper end face of the thermocouple (2) is more than 50cm.

9. The temperature measuring device for vacuum melting gas atomization powder process according to claim 1, wherein: the control button (14) is further arranged outside the body (1), and the control button (14) is electrically connected with the winding machine (11) and used for controlling the lifting and the lowering of the chain (13).