Temperature measuring device of heat treatment furnace

Abstract

The utility model discloses a temperature measuring device for a heat treatment furnace, which comprises a furnace body, a detection port arranged on the end face of the furnace body, a baffle plate which shields the detection port and is rotatably arranged on the end face of the furnace body, a lifting assembly arranged on the baffle plate, and a thermocouple arranged at the lower end of the lifting assembly. The thermocouple is driven by the lifting assembly to enter or break away from the furnace body through the detection opening, the baffle can rotate on the furnace body to shield the detection opening under the cooperative use of the driving motor, the arc-shaped rack and the gear, the lifting assembly is installed on the baffle, and the thermocouple is installed on the lifting assembly. The lifting assembly and the thermocouple can be conveyed to the detection port when the temperature in the furnace body needs to be monitored, the thermocouple can be conveyed into the furnace body through the lifting assembly to be detected, the thermocouple can be separated from the furnace body in time after detection is finished, and the situation that the service life of the thermocouple is affected by high temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment furnaces, and specifically relates to a temperature measuring device for a heat treatment furnace. Background Art

[0002] At present, during the use of a gas heat treatment furnace, it is necessary to measure the temperature inside the furnace cavity. However, the current temperature measuring devices for gas heat treatment furnaces are basically fixedly installed on the inner wall of the heat treatment furnace by means such as welding.

[0003] After retrieval, for a temperature measuring device for a heat treatment furnace with the patent number CN220018757U, by moving the thermocouple downward, the heat insulation plate can be pushed to rotate, so that the connecting seat can be pulled to move downward through the movable rod, driving the linkage rod to pull the movable plate downward, enabling the movable plate to compress the return spring, thereby facilitating the thermocouple to penetrate into the heat treatment furnace for temperature measurement. After the thermocouple moves into the interior of the mounting rack, by pushing the movable plate upward through the return spring, the linkage rod can be driven to pull the movable rod upward, and the movable rod drives the heat insulation plate to close the movable hole, thereby being able to isolate the temperature inside the heat treatment furnace from spreading to the interior of the mounting rack and avoiding the influence of high temperature on the thermocouple.

[0004] Although the above technical solution can measure the temperature inside the furnace movably and increase the service life of the temperature measuring device, when the thermocouple pushes the heat insulation plate to rotate and during the process of the thermocouple measuring the temperature inside the furnace cavity, the furnace body and the mounting rack are communicated through the movable hole, resulting in the heat inside the furnace body leaking. For this reason, a temperature measuring device for a heat treatment furnace is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a temperature measuring device for a heat treatment furnace to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A temperature measuring device for a heat treatment furnace, including a furnace body, a detection port is opened on the end face of the furnace body, a baffle plate covering the detection port is rotatably installed on the end face of the furnace body, a lifting assembly is installed on the baffle plate, and a thermocouple is installed at the lower end of the lifting assembly. The thermocouple is driven by the lifting assembly to enter or leave the furnace body through the detection port.

[0007] Preferably, the edge of the baffle plate is arc-shaped and is provided with an arc-shaped rack, the arc-shaped rack meshes with a gear, and the gear is driven by a driving motor installed on the end face of the furnace body to shield the detection port with the baffle plate.

[0008] Preferably, the lifting assembly includes a cylinder body, an insulating board is arranged inside the cylinder body, the thermocouple is installed at the lower end of the insulating board, a rack is installed at the upper end of the insulating board, and the upper end of the rack penetrates through the cylinder body and extends to the outside. A driving component for driving the rack to rise or fall is installed on the cylinder body. A through hole for the thermocouple to pass through is formed on the baffle, and the insulating board descends to block the through hole.

[0009] Preferably, the size of the insulating board matches the inner diameter of the cylinder body, and the lower end of the insulating board contracts inward and is inserted into the through hole.

[0010] Preferably, the size of the detection port is smaller than the size of the through hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: For a temperature measuring device of a heat treatment furnace, through the cooperation of the baffle, the driving motor, the arc rack and the gear, the baffle can rotate on the furnace body to block the detection port. By installing a lifting assembly on the baffle and a thermocouple installed on the lifting assembly, the lifting assembly and the thermocouple can be sent to the detection port when it is necessary to monitor the temperature inside the furnace body. The lifting assembly can send the thermocouple into the furnace body for detection, and can timely separate the thermocouple from the furnace body after the detection is completed, avoiding the influence of high temperature on the service life of the thermocouple. Moreover, through the insulating board, when the thermocouple descends and when detecting the temperature inside the furnace body, the through hole can be blocked. Since the through hole is larger than the detection port, the detection port can be blocked by the insulating board, avoiding heat loss inside the furnace body and increasing the accuracy of temperature measurement. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present utility model;

[0013] Figure 2 is the internal structural sectional view of the cylinder body of the present utility model.

[0014] In the figure: 1 - furnace body, 2 - detection port, 3 - baffle, 4 - lifting assembly, 41 - cylinder body, 42 - insulating board, 43 - rack, 44 - driving component, 45 - through hole, 5 - thermocouple, 6 - arc rack, 7 - gear, 8 - driving motor. Detailed Embodiments

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figure 1-2 , the present utility model provides a technical solution: a temperature measuring device for a heat treatment furnace, including a furnace body 1, a detection port 2 is opened on the end face of the furnace body 1, a baffle 3 covering the detection port 2 is rotatably installed on the end face of the furnace body 1, a lifting assembly 4 is installed on the baffle 3, and a thermocouple 5 is installed at the lower end of the lifting assembly 4. The thermocouple 5 is driven by the lifting assembly 4 to enter or exit the furnace body 1 through the detection port 2.

[0017] The detection port 2 is used for inserting the thermocouple 5.

[0018] Specifically, the edge of the baffle 3 is an arc surface and is provided with an arc-shaped rack 6. The arc-shaped rack 6 meshes with a gear 7. The gear 7 is driven by a driving motor 8 installed on the end face of the furnace body 1. The driving motor 8 is a stepping motor, so that the baffle 3 covers the detection port 2.

[0019] Specifically, the lifting assembly 4 includes a cylinder body 41. A heat insulation plate 42 is arranged inside the cylinder body 41. The thermocouple 5 is installed at the lower end of the heat insulation plate 42. A rack 43 is installed at the upper end of the heat insulation plate 42, and the upper end of the rack 43 penetrates through the cylinder body 41 and extends to the outside. A driving component 44 for driving the rack 43 to rise or fall is installed on the cylinder body 41. A through hole 45 for the thermocouple 5 to pass through is opened on the baffle 3. The heat insulation plate 42 descends to block the through hole 45.

[0020] The driving component 44 includes a chassis. The chassis is connected to the box body. A motor is installed inside the box body, and a gear meshing with the rack 43 is installed at the rotating end of the motor.

[0021] Specifically, the size of the heat insulation plate 42 matches the inner diameter of the cylinder body 41, and the lower end of the heat insulation plate 42 shrinks inward and is inserted into the through hole 45.

[0022] Specifically, the size of the detection port 2 is smaller than the size of the through hole 45.

[0023] Working principle: When it is necessary to measure the temperature inside the furnace body 1, the driving motor 8 is used to drive the gear 7 to rotate. The gear 7 engages with the arc-shaped rack 6, and then drives the baffle 3 to rotate, so that the lifting assembly 4 and the thermocouple 5 rotate to the upper end of the corresponding detection port 2. At this time, the through hole 45 is communicated with the detection port 2. The driving component 44 is started, and the driving component 44 drives the rack 43 to move downward. The rack 43 drives the heat insulation plate 42 to move downward in the cylinder body 41. The thermocouple 5 enters the furnace body 1 through the through hole 45 and the detection port 2 until the lower end of the heat insulation plate 42 is inserted into the through hole 45, blocking the through hole 45 and shielding the detection port 2, avoiding heat loss inside the furnace body 1 and also increasing the accuracy of temperature measurement. After the detection is completed, the thermocouple 5 is timely disengaged from the furnace body 1 by starting the driving component 44 to avoid the high temperature affecting the service life of the thermocouple. Then the driving motor 8 is started to drive the baffle 3 to rotate, so that the baffle 3 shields the detection port 2.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature measuring device for a heat treatment furnace, comprising a furnace body, wherein a detection port is provided on the end face of the furnace body, and it is characterized in that: A baffle that shields the detection port is rotatably installed on the end face of the furnace body. A lifting assembly is installed on the baffle, and a thermocouple is installed at the lower end of the lifting assembly. The thermocouple is driven by the lifting assembly to enter or exit the furnace body through the detection port.

2. The temperature measuring device for a heat treatment furnace according to claim 1, characterized in that: The edge of the baffle is arc-shaped and is provided with an arc-shaped rack. The arc-shaped rack meshes with a gear, and the gear is driven by a driving motor installed on the end face of the furnace body to shield the detection port with the baffle.

3. The temperature measuring device for the heat treatment furnace according to claim 1, characterized in that: The lifting assembly includes a cylinder body. A heat insulation plate is arranged inside the cylinder body. The thermocouple is installed at the lower end of the heat insulation plate. A rack is installed at the upper end of the heat insulation plate, and the upper end of the rack penetrates through the cylinder body and extends to the outside. A driving component for driving the rack to rise or fall is installed on the cylinder body. A through hole for the thermocouple to pass through is formed on the baffle, and the heat insulation plate descends to block the through hole.

4. The temperature measuring device for a heat treatment furnace according to claim 3, characterized in that: The size of the heat insulation plate matches the inner diameter of the cylinder body, and the lower end of the heat insulation plate contracts inward and is inserted into the through hole.

5. The temperature measuring device for a heat treatment furnace according to claim 3, wherein: The size of the detection port is smaller than the size of the through hole.

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