Discharging liquid level control device of autoclave

Abstract

The utility model provides an autoclave discharge liquid level control device which comprises an autoclave, a stirring shaft is arranged in the autoclave, the top end of the stirring shaft penetrates out of the top of the autoclave and is connected with a motor used for driving the stirring shaft to rotate, a discharge stirring paddle is arranged at the bottom end of the stirring shaft, and the discharge stirring paddle is connected with the autoclave. A liquid level detection stirring paddle is arranged in the middle of the stirring shaft, the autoclave is connected with a discharging pipe, an electromagnetic discharging valve is arranged on the discharging pipe and connected with a controller, the controller is connected with a current transformer, and the current transformer is connected with a motor. The liquid level detection stirring paddle is arranged in the autoclave, the change of the liquid level in the autoclave is judged according to the load of the motor driving the liquid level detection stirring paddle to rotate and the change of the current intensity, and the electromagnetic discharge valve is controlled to be opened or closed to adjust the height of the liquid level, so that the liquid level is maintained in a set range. The detection is more reliable and accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of autoclave equipment and relates to a liquid level control device for discharging materials from an autoclave. Background Art

[0002] The liquid level of discharging materials from the autoclave is controlled by interlocking a radar level gauge or a guided wave level gauge with an automatic discharging valve. However, in actual applications, the surface of the detection port of the radar level gauge is prone to form condensate water and malfunction, and the guided wave level gauge is prone to malfunction due to adhesion of pulp. Neither can accurately detect and display the actual liquid level of discharging materials from the autoclave, causing disturbances to normal production. Content of the Utility Model

[0003] The purpose of the utility model is to provide a liquid level control device for discharging materials from an autoclave aiming at the problems existing in the prior art.

[0004] Therefore, the utility model adopts the following technical solutions:

[0005] A liquid level control device for discharging materials from an autoclave includes an autoclave. A stirring shaft is arranged inside the autoclave. The top end of the stirring shaft passes through the top of the autoclave. A motor for driving the stirring shaft to rotate is connected to the top end of the stirring shaft. A discharging stirring paddle is arranged at the bottom end of the stirring shaft. A liquid level detection stirring paddle is arranged in the middle of the stirring shaft. The autoclave is connected with a discharging pipe. An electromagnetic discharging valve is arranged on the discharging pipe. The electromagnetic discharging valve is connected with a controller. The controller is connected with a current transformer. The current transformer is connected with the motor.

[0006] Further, the motor is connected with the stirring shaft through a speed reducer.

[0007] Further, a manual discharging valve is arranged on the discharging pipe.

[0008] The beneficial effect of the utility model lies in that a liquid level detection stirring paddle is arranged inside the autoclave. According to the change of the motor load and current intensity driving the liquid level detection stirring paddle to rotate, the change of the liquid level inside the autoclave is judged, and the electromagnetic discharging valve is controlled to open or close to adjust the liquid level height, so that the liquid level is maintained within a set range. Compared with the existing radar level gauge, the detection is more reliable and accurate. Description of the Drawings

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a control principle diagram of the utility model;

[0011] In the figure, 1 is a pressure autoclave, 2 is a stirring shaft, 3 is a motor, 4 is a speed reducer, 5 is a discharging stirring paddle, 6 is a liquid level detecting stirring paddle, 7 is a discharging pipe, 8 is an electromagnetic discharging valve, 9 is a controller, 10 is a current transformer, and 11 is a manual discharging valve. Detailed implementation mode

[0012] The following will make a detailed description of the present utility model in conjunction with the accompanying drawings:

[0013] As Figure 1 and 2 shown, a liquid level control device for discharging of a pressure autoclave includes a pressure autoclave 1. A stirring shaft 2 is arranged in the pressure autoclave 1. The top end of the stirring shaft 2 penetrates out of the top of the pressure autoclave 1. A motor 3 for driving the rotation of the stirring shaft 2 is connected to the top end of the stirring shaft 2. In this embodiment, the motor 3 is connected to the stirring shaft 2 through a speed reducer 4. A discharging stirring paddle 5 is arranged at the bottom end of the stirring shaft 2. A liquid level detecting stirring paddle 6 is arranged in the middle of the stirring shaft 2. The liquid level detecting stirring paddle 6 is located at the set liquid level position in the pressure autoclave 1. The discharging stirring paddle 5 and the liquid level detecting stirring paddle 6 adopt straight blade stirring paddles. When the liquid level height in the pressure autoclave 1 completely submerges the liquid level detecting stirring paddle 6, the load of the motor 3 increases. When the liquid level height is lower than the liquid level detecting stirring paddle 6 and the liquid level detecting stirring paddle 6 is completely exposed from the pulp, the load of the motor 3 decreases. The pressure autoclave 1 is connected with a discharging pipe 7. An electromagnetic discharging valve 8 is arranged on the discharging pipe 7. The electromagnetic discharging valve 8 is connected with a controller 9. The controller 9 can adopt an existing conventional PLC controller or other controllers. The controller 9 is connected with a current transformer 10. The current transformer 10 is connected with the motor 3. Specifically, the current transformer 10 is connected with the cable that provides power for the motor 3. The current transformer 10 can detect the load condition and the change of current intensity of the motor 3.

[0014] A manual discharging valve 11 is further arranged on the discharging pipe 7.

[0015] The using method of the present utility model is as follows:

[0016] When the liquid level in the pressure autoclave 1 rises and completely submerges the liquid level detecting stirring paddle 6, the load of the motor 3 gradually increases. At this time, the current transformer 10 transmits the current and load information of the motor 3 to the controller 9. The controller 9 controls the opening of the electromagnetic discharging valve 8 according to the current and load information, and discharges the pulp in the pressure autoclave 1 through the discharging pipe 7 to reduce the liquid level in the pressure autoclave 1. When the liquid level in the pressure autoclave 1 decreases until the liquid level detecting stirring paddle 6 is completely exposed from the pulp, the load of the motor 3 gradually decreases. At this time, the current transformer 10 transmits the current and load information of the motor 3 to the controller 9. The controller 9 controls the electromagnetic discharging valve 8 to gradually decrease until it is closed according to the current and load information, and stops discharging the pulp outward to prevent the liquid level from further decreasing, so as to keep the liquid level position in the pressure autoclave 1 within the set range.

[0017] Compared with the existing radar level gauge, this device can accurately detect the liquid level in the autoclave 1 and then control the liquid level within the set range.

Claims

1. A pressure autoclave discharging liquid level control device, characterized in that, It includes an autoclave (1), a stirring shaft (2) is arranged inside the autoclave (1), the top end of the stirring shaft (2) passes out from the top of the autoclave (1), a motor (3) for driving the rotation of the stirring shaft (2) is connected to the top end of the stirring shaft (2), a discharge stirring paddle (5) is arranged at the bottom end of the stirring shaft (2), a liquid level detection stirring paddle (6) is arranged in the middle of the stirring shaft (2), the autoclave (1) is connected with a discharge pipe (7), an electromagnetic discharge valve (8) is arranged on the discharge pipe (7), the electromagnetic discharge valve (8) is connected with a controller (9), the controller (9) is connected with a current transformer (10), and the current transformer (10) is connected with the motor (3).

2. The pressure autoclave discharging liquid level control device according to claim 1, characterized in that, The motor (3) is connected with the stirring shaft (2) through a speed reducer (4).

3. The pressure vessel discharging liquid level control device according to claim 1, characterized in that, A manual discharge valve (11) is arranged on the discharge pipe (7).

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