CN-224230642-U - Muffle furnace convenient to open

CN224230642UCN 224230642 UCN224230642 UCN 224230642UCN-224230642-U

Abstract

The utility model provides a muffle furnace convenient to open, which comprises a furnace body, a furnace door, a driving mechanism, a limiting mechanism and a connecting mechanism, wherein the furnace door is an electric door, the opening is controlled by the driving mechanism and the limiting mechanism, manual operation is not required, the electric door can ensure that an operator does not need to directly contact the high-temperature furnace door in a high-temperature environment, so that the risk of scalding and other safety accidents is reduced, and the furnace door can be automatically opened and closed in the experimental process by electric control, so that the safety of the experimental process is ensured. The limiting mechanism comprises a limiting plate and 2 photoelectric proximity switches, wherein the limiting plate is fixed on the rotating shaft and can rotate along with the rotating shaft, and when the limiting plate rotates to the photoelectric proximity switches, the opening or closing of the furnace door can be triggered.

Inventors

WU DAMING
LI HONG
LI WEIYANG

Assignees

天津拓至明实验仪器设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250515

Claims (7)

1. The muffle furnace convenient to open is characterized by comprising a furnace body, a furnace door, a driving mechanism, a limiting mechanism and a connecting mechanism, wherein the furnace body comprises a furnace chamber above and an equipment chamber below, the furnace door is arranged on the front side of the furnace chamber, the driving mechanism and the limiting mechanism are arranged in the equipment chamber, the driving mechanism comprises a motor and a rotating shaft, the rotating shaft is driven to rotate by the motor, the rotating shaft is vertically arranged, the furnace door is connected to the rotating shaft through the connecting mechanism, the limiting mechanism comprises a limiting plate, a first photoelectric proximity switch, a second photoelectric proximity switch and a mounting frame, the limiting plate is fixed on the rotating shaft, the mounting frame is arranged on the side wall below the limiting plate, the rotating shaft penetrates through the mounting frame and is connected with the mounting frame in a rotating mode, the first photoelectric proximity switch and the second photoelectric proximity switch are respectively arranged on the outer side and the inner side of the mounting frame, and through holes which are convenient for light beams emitted by the first photoelectric proximity switch and the second photoelectric proximity switch to pass are arranged on the limiting plate.
2. The muffle furnace convenient to open according to claim 1, wherein the connecting mechanism comprises an upper mounting plate, an upper fixing plate, a lower mounting plate, a lower fixing plate and a connecting plate, wherein the upper mounting plate is fixed above the front side opening of the furnace chamber, the lower mounting plate is fixed below the front side opening of the furnace chamber, the upper end of the rotating shaft is rotatably arranged on the upper mounting plate, one end of the upper fixing plate is fixed on the rotating shaft, the other end of the upper fixing plate is hinged with the inner side of the furnace door, one end of the lower fixing plate is also fixed on the rotating shaft, the other end of the lower fixing plate is hinged with the connecting plate, and the connecting plate is hinged with the inner side of the furnace door.
3. The muffle furnace convenient to open according to claim 1, wherein the driving mechanism further comprises a speed reducer and a hand wheel, the speed reducer is respectively connected with the motor, the hand wheel and the rotating shaft, the connecting shaft of the hand wheel is perpendicular to the rotating shaft, and the connecting shaft of the motor is parallel to the connecting shaft of the hand wheel.
4. The muffle furnace convenient to open according to claim 3, wherein the speed reducer and the motor are arranged on a bracket, and the bracket is fixed in the equipment cavity.
5. The muffle furnace convenient to open according to claim 3, wherein the front side of the equipment cavity is provided with a panel, the panel is provided with a groove convenient to hide the hand wheel, and the hand wheel is embedded in the groove.
6. The muffle furnace convenient to open according to claim 5, wherein a detachable sealing cover is further arranged at the groove.
7. The muffle furnace convenient to open according to claim 1, wherein the mounting frame is a 7-shaped plate, an arc-shaped hole is formed in the horizontal section of the mounting frame, a notch communicated with the arc-shaped hole is further formed in the horizontal section of the mounting frame, and the first photoelectric proximity switch and the second photoelectric proximity switch are arranged in the arc-shaped hole.

Description

Muffle furnace convenient to open Technical Field The utility model relates to the technical field of muffle furnaces, in particular to a muffle furnace convenient to open. Background The muffle furnace is a heating instrument commonly used in experimental analysis and industrial production, and specifically is used for heating and high-temperature roasting, melting, ashing and other treatments of samples. The existing muffle furnace needs an operator to manually open the furnace door, and because the furnace chamber temperature of the muffle furnace is very high, scalding or other safety accidents can occur, and the personnel safety of the operator is not facilitated. Disclosure of utility model In view of the above, the present utility model aims to provide a muffle furnace that is easy to open, so as to solve the above problems. In order to achieve the above purpose, the technical scheme of the utility model is realized as follows: The muffle furnace convenient to open comprises a furnace body, a furnace door, a driving mechanism, a limiting mechanism and a connecting mechanism, wherein the furnace body comprises a furnace cavity above and an equipment cavity below, the furnace door is arranged on the front side of the furnace cavity, the driving mechanism and the limiting mechanism are arranged in the equipment cavity, the driving mechanism comprises a motor and a rotating shaft, the rotating shaft is driven to rotate by the motor, the rotating shaft is vertically arranged, the furnace door is connected to the rotating shaft through the connecting mechanism, the limiting mechanism comprises a limiting plate, a first photoelectric proximity switch, a second photoelectric proximity switch and a mounting frame, the limiting plate is fixed to the rotating shaft, the mounting frame is arranged on the side wall below the limiting plate, the rotating shaft penetrates through the mounting frame and is connected with the mounting frame in a rotating mode, the first photoelectric proximity switch and the second photoelectric proximity switch are respectively arranged on the outer side and the inner side of the mounting frame, and through holes which are convenient for light beams emitted by the first photoelectric proximity switch and the second photoelectric proximity switch to pass are arranged on the limiting plate. The connecting mechanism comprises an upper mounting plate, an upper fixing plate, a lower mounting plate, a lower fixing plate and a connecting plate, wherein the upper mounting plate is fixed above the front side opening of the hearth, the lower mounting plate is fixed below the front side opening of the hearth, the upper end of the rotating shaft is rotatably arranged on the upper mounting plate, one end of the upper fixing plate is fixed on the rotating shaft, the other end of the upper fixing plate is hinged with the inner side of the furnace door, one end of the lower fixing plate is also fixed on the rotating shaft, the other end of the lower fixing plate is hinged with the connecting plate, and the connecting plate is hinged with the inner side of the furnace door. The driving mechanism further comprises a speed reducer and a hand wheel, wherein the speed reducer is respectively connected with the motor, the hand wheel and the rotating shaft, the connecting shaft of the hand wheel is perpendicular to the rotating shaft, and the connecting shaft of the motor is parallel to the connecting shaft of the hand wheel. Further, the speed reducer and the motor are both arranged on a bracket, and the bracket is fixed in the equipment cavity. Further, the front side of the equipment cavity is provided with a panel, a groove convenient for hiding the hand wheel is formed in the panel, and the hand wheel is embedded in the groove. Further, a detachable sealing cover is arranged at the groove. Further, the mounting frame is a 7-shaped plate, an arc hole is formed in the horizontal section of the mounting frame, a notch communicated with the arc hole is further formed in the horizontal section of the mounting frame, and the first photoelectric proximity switch and the second photoelectric proximity switch are mounted in the arc hole. Compared with the prior art, the muffle furnace convenient to open has the following advantages: The furnace door of the muffle furnace convenient to open is an electric door, the opening is controlled by the driving mechanism and the limiting mechanism, manual operation is not needed, the electric door can ensure that an operator does not need to directly contact the high-temperature furnace door in a high-temperature environment, so that the risk of scalding and other safety accidents is reduced, and the furnace door can be automatically opened and closed in the experimental process by electric control, so that the safety of the experimental process is ensured. The limiting mechanism comprises a limiting plate and 2 photoelectric proximity switches, wherein the limiting pla