Non-contact accurate temperature measuring device for kneading paste

Abstract

The utility model relates to a non-contact accurate temperature measuring device for kneading paste, and belongs to the technical field of prebaked anode production. Comprising a protective sleeve which is installed outside a machine cover at the top of a mixing and kneading pot and communicated with an inner cavity of the mixing and kneading pot, a combined outer cover is detachably installed at the outer end of the protective sleeve, and an air inlet pipe and a temperature measuring sensor used for detecting the temperature in the protective sleeve are installed at the top of the combined outer cover. An air pressure detection sensor used for detecting the internal pressure of the protective sleeve is installed on the outer wall of the protective sleeve, and the detection end of the air pressure detection sensor is located in the protective sleeve. The utility model has the following beneficial effects: the problem that the temperature measurement effect is seriously influenced because the kneaded paste material is attached to the surface of the temperature measurement element and is coked into blocks is solved.

Description

Technical Field

[0001] The utility model relates to a non-contact precise temperature measuring device for kneading paste, belonging to the technical field of pre-baked anode production. Background Art

[0002] The kneading pot is a device that uses a pair of rotating blades to produce a strong shearing effect to evenly mix semi-dry carbon and asphalt materials.

[0003] The patent application with patent number CN202222579260.1 discloses a carbon kneading pot. It includes a composite kneading pot, which is in the shape of a rectangular box, a motor base is fixedly installed on the right wall of the composite kneading pot, a servo motor is fixedly installed on the top of the motor base, and the output end of the servo motor moves through the right wall of the composite kneading pot, an output shaft is fixedly installed on the output end of the servo motor, and a kneading composite stirring blade is fixedly installed on the outer wall of the output shaft, and the composite kneading pot includes a kneading pot outer layer, which is in the shape of a rectangular box, and a composite inner liner layer of the kneading pot is provided, and the fifth detachable manganese steel plate, the first detachable manganese steel plate, the second detachable manganese steel plate, the third detachable manganese steel plate and the fourth detachable manganese steel plate in the composite inner liner layer of the kneading pot are all detachable manganese steel materials.

[0004] Although the above patent can realize the kneading function, the current technology is not comprehensive and has the following disadvantages:

[0005] During the kneading process of aluminum prebaked anode production, the paste temperature in the kneading pot is generally detected by inserting a thermocouple into the agitator shaft to measure the temperature, or by using a wear-resistant thermistor in the triangular area of ​​the lower wall panel, the circumference of the two agitators, and the circumference of the discharge door. The thermistor is fixed to the kneading pot shell through a thermistor mounting base. The temperature measuring element thermistor is in direct contact with the material. After long-term operation, the temperature measuring element is easily covered by the paste and condensed into blocks, resulting in a large error between the temperature measurement data of the thermistor and the actual temperature of the paste. It is often necessary to manually insert a handheld glass thermometer into the paste for temperature measurement and calibration.

[0006] In order to solve one of the above problems, a non-contact accurate temperature measurement device for kneading paste is urgently needed. Utility Model Content

[0007] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to maintain a slightly positive pressure state in the protective sleeve to prevent the polluted gas in the kneading pot from entering the protective sleeve to ensure that the probe of the temperature sensor is not contaminated, and to provide a non-contact precise temperature measuring device for kneading paste.

[0008] The non-contact precise temperature measuring device for kneading paste described in the utility model comprises a protective sleeve installed on the outside of the machine cover at the top of the kneading pot and connected to the inner cavity of the kneading pot, and is characterized in that: the outer end of the protective sleeve is detachably installed with a combined outer cover, the top of the combined outer cover is installed with an air inlet pipe and a temperature sensor for detecting the internal temperature of the protective sleeve, an air pressure detection sensor for detecting the internal pressure of the protective sleeve is installed on the outer wall of the protective sleeve, and the detection end of the air pressure detection sensor is located inside the protective sleeve.

[0009] Before adding materials into the kneading pot, firstly, compressed air is introduced into the protective sleeve and the combined outer cover through the air inlet pipe to keep the protective sleeve in a slightly positive pressure state, preventing the polluted gas in the kneading pot from entering the protective sleeve, so as to ensure that the probe of the temperature sensor is not polluted. This solves the problem that the kneading paste adheres to the surface of the temperature measuring element and cokes into lumps, which seriously affects the temperature measurement effect.

[0010] Preferably, the combined outer cover includes an upper tube body, the top of the upper tube body is sealed with an upper cover plate, an upper connecting flange is fixed to the bottom of the upper tube body, the temperature sensor is installed at the center of the upper cover plate, and the detection probe of the temperature sensor extends to the upper inner part of the protective sleeve.

[0011] Preferably, three groups of air inlet pipes are installed on the upper cover plate, and the three groups of air inlet pipes are arranged around the vertical center line of the upper cover plate and the angle between two adjacent groups is 120 degrees. The three groups of air inlet pipes are all connected to the gas supply main pipe, and the other end of the gas supply main pipe is connected to the gas supply source, and a gas pressure regulating device for controlling the on-off of the gas supply main pipe is installed on the gas supply main pipe.

[0012] The air inlet pipe consists of three branches, which are arranged in the same circle at an interval of 120° to ensure that the compressed air evenly fills the internal space of the protective sleeve without forming eddy currents, thereby effectively protecting the probe of the temperature sensor from contamination.

[0013] Preferably, the protective sleeve comprises a lower tube body, the lower tube body is welded to the outer wall of the top cover of the kneading pot, and is connected to the inner cavity of the kneading pot through a through hole provided on the top cover of the kneading pot, and a lower flange matching with an upper connecting flange is installed on the top of the lower tube body, and the upper connecting flange and the lower connecting flange are connected by bolts. Installation and disassembly are more convenient.

[0014] Preferably, the air pressure detection sensor is installed on the bottom outer wall of the lower tube body.

[0015] Preferably, the air outlet of the air inlet pipe extends to the inner middle part of the lower tube body.

[0016] Preferably, the gas pressure regulating device is an electrically controlled valve, further comprising a pressure regulating controller and an alarm, the gas pressure regulating device is electrically connected to a signal input terminal of the pressure regulating controller, and the alarm is electrically connected to a signal output terminal of the pressure regulating controller.

[0017] The pressure regulating controller receives the pressure signal detected by the air pressure detection sensor and outputs a regulating signal to the gas pressure regulating device, automatically adjusting the compressed air supply pressure to ensure that the protective casing always maintains a slightly positive pressure state. When the pressure regulating controller detects that the gas pressure is too high or too low through the air pressure detection sensor, the alarm is triggered.

[0018] Preferably, the pressure regulating controller is a PLC controller or a single chip microcomputer, the air pressure detection sensor and the temperature sensor are both existing structures configured to detect the air pressure and air temperature in the protective sleeve respectively, and the air supply source supplies compressed air.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The non-contact precise temperature measuring device for kneaded paste of the utility model solves the problem that the kneaded paste adheres to the surface of the temperature measuring element and cokes into lumps, which seriously affects the temperature measuring effect.

[0021] The non-contact precise temperature measuring device for kneading paste of the utility model solves the measurement error caused by the temperature change of the measured material and the ambient temperature of the temperature measuring element in the existing pre-baked anode production process, and improves the detection accuracy.

[0022] The non-contact precise temperature measuring device for kneading paste of the utility model reduces the labor intensity of workers and provides a reliable basis for the automatic and continuous operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model in use;

[0025] Figure 2 for Figure 1 The local schematic diagram of the A in the middle;

[0026] Figure 3 for Figure 2 Schematic diagram of direction B in .

[0027] In the figure: 1, kneading pot 2, protective sleeve 3, upper connecting flange 4, combined outer cover 5, air inlet pipe 6, temperature sensor 7, air pressure detection sensor 8, gas pressure regulating device 9, pressure regulating controller 10, alarm 11, gas supply main pipeline 12, top cover of kneading pot. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings: The utility model is further illustrated below through specific embodiments, but is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the protection scope of the utility model.

[0029] Embodiment 1, as Figure 1-2 As shown, the non-contact precise temperature measurement device for kneading paste comprises a protective sleeve 2 installed on the outside of a machine cover 12 at the top of a kneading pot and connected to the inner cavity of the kneading pot 1, a combined outer cover 4 is detachably installed on the outer end of the protective sleeve 2, an air inlet pipe 5 and a temperature sensor 6 for detecting the internal temperature of the protective sleeve 2 are installed on the top of the combined outer cover 4, an air pressure detection sensor 7 for detecting the internal pressure of the protective sleeve 2 is installed on the outer wall of the protective sleeve 2, and the detection end of the air pressure detection sensor 7 is located inside the protective sleeve 2.

[0030] Before adding materials into the kneading pot 1, compressed air is first introduced into the protective sleeve 2 and the combined outer cover 4 through the air inlet pipe 5 to maintain a slightly positive pressure in the protective sleeve 2 to prevent polluted gas in the kneading pot from entering the protective sleeve 2, so as to ensure that the probe of the temperature sensor 6 is not contaminated.

[0031] Embodiment 2, as Figure 1-3 As shown, the non-contact precise temperature measurement device for kneading paste comprises a protective sleeve 2 installed on the outside of a machine cover 12 at the top of a kneading pot and connected to the inner cavity of the kneading pot 1, a combined outer cover 4 is detachably installed on the outer end of the protective sleeve 2, an air inlet pipe 5 and a temperature sensor 6 for detecting the internal temperature of the protective sleeve 2 are installed on the top of the combined outer cover 4, an air pressure detection sensor 7 for detecting the internal pressure of the protective sleeve 2 is installed on the outer wall of the protective sleeve 2, and the detection end of the air pressure detection sensor 7 is located inside the protective sleeve 2.

[0032] Furthermore, the combined outer cover 4 includes an upper tube body, the top of the upper tube body is sealed with an upper cover plate, the bottom of the upper tube body is fixed with an upper connecting flange 3, the temperature sensor 6 is installed at the center of the upper cover plate, and the detection probe of the temperature sensor 6 extends to the upper inner part of the protective sleeve 2.

[0033] Furthermore, three groups of air inlet pipes 5 are installed on the upper cover plate, and the three groups of air inlet pipes 5 are arranged around the vertical center line of the upper cover plate and the angle between two adjacent ones is 120 degrees. The three groups of air inlet pipes 5 are all connected to the gas supply main pipeline 11, and the other end of the gas supply main pipeline 11 is connected to the gas supply source, and a gas pressure regulating device 8 for controlling the on-off of the gas supply main pipeline 11 is installed on the gas supply main pipeline 11.

[0034] The air inlet pipe 5 consists of three branches, which are arranged in the same circle at an interval of 120 degrees, ensuring that the compressed air evenly fills the internal space of the protective sleeve 2 without forming eddy currents, thereby effectively protecting the probe of the temperature sensor 6 from contamination.

[0035] Furthermore, the protective sleeve 2 includes a lower tube body, which is welded to the outer wall of the top cover 12 of the kneading pot, and is connected to the inner cavity of the kneading pot 1 through a through hole provided on the top cover 12 of the kneading pot, and a lower flange matching the upper connecting flange 3 is installed on the top of the lower tube body, and the upper connecting flange 3 and the lower connecting flange are connected by bolts. Installation and disassembly are more convenient.

[0036] Furthermore, further, the air pressure detection sensor 7 is installed on the bottom outer wall of the lower tube body.

[0037] Furthermore, the air outlet of the air inlet pipe 5 extends to the inner middle part of the lower tube body.

[0038] Furthermore, the gas pressure regulating device 8 is an electrically controlled valve, and also includes a pressure regulating controller 9 and an alarm 10 . The gas pressure regulating device 8 is electrically connected to a signal input end of the pressure regulating controller 9 , and the alarm 10 is electrically connected to a signal output end of the pressure regulating controller 9 .

[0039] The pressure regulating controller 9 receives the pressure signal detected by the air pressure detection sensor 7, and outputs a regulating signal to the gas pressure regulating device 8, automatically adjusting the compressed air supply pressure to ensure that the protective sleeve 2 always maintains a slightly positive pressure state. When the pressure regulating controller 9 detects that the gas pressure is too high or too low through the air pressure detection sensor 7, the alarm 10 is triggered to sound an alarm.

[0040] Furthermore, the pressure regulating controller 9 is a PLC controller or a single chip microcomputer, the air pressure detection sensor 7 and the temperature sensor 6 are both existing structures and are respectively configured to detect the air pressure and air temperature in the protective sleeve 2, and the air supply source supplies compressed air.

[0041] In this embodiment, the modification of the prior art by this specific implementation method lies in the hardware part, and the computer program involved is a simple program that can be easily implemented by those skilled in the art using the existing computer program development platform and well-known programming methods.

[0042] Herein, the temperature sensor 6, the air pressure detection sensor 7, the gas pressure regulating device 8, the pressure regulating controller 9 and the alarm 10 are merely a simple use of their functions and do not involve improvements to the method procedures.

[0043] It solves the problem of traditional temperature measuring devices. Due to the long-term contact of the kneaded paste with the temperature measuring element, affected by the blind spots of material movement and the constantly changing temperature environment, the kneaded paste adheres to the surface of the temperature measuring element and cokes into lumps, seriously affecting the temperature measurement effect, causing large temperature measurement errors, affecting the precise control of production data, and at the same time reducing the labor intensity of workers.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

[0045] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A non-contact precise temperature measurement device for kneading paste, comprising a protective sleeve (2) installed on the outside of a top cover (12) of a kneading pot and connected to the inner cavity of the kneading pot (1), characterized in that: The outer end of the protective sleeve (2) is detachably mounted with a combined outer cover (4); the top of the combined outer cover (4) is mounted with an air inlet pipe (5) and a temperature sensor (6) for detecting the internal temperature of the protective sleeve (2); an air pressure detection sensor (7) for detecting the internal pressure of the protective sleeve (2) is mounted on the outer wall of the protective sleeve (2); the detection end of the air pressure detection sensor (7) is located inside the protective sleeve (2).

2. The non-contact precise temperature measurement device for kneading paste according to claim 1, characterized in that: The combined outer cover (4) comprises an upper tube body, the top of the upper tube body is sealed by an upper cover plate, an upper connecting flange (3) is fixed to the bottom of the upper tube body, the temperature sensor (6) is mounted at the center of the upper cover plate, and the detection probe of the temperature sensor (6) extends to the upper inner part of the protective sleeve (2).

3. The non-contact precise temperature measurement device for kneading paste according to claim 2, characterized in that: Three groups of air inlet pipes (5) are installed on the upper cover plate. The three groups of air inlet pipes (5) are arranged around the vertical center line of the upper cover plate and the angle between two adjacent groups is 120 degrees. The three groups of air inlet pipes (5) are all connected to the main gas supply pipe (11). The other end of the main gas supply pipe (11) is connected to the gas supply source, and a gas pressure regulating device (8) for controlling the on-off of the main gas supply pipe (11) is installed on the main gas supply pipe (11).

4. The non-contact precise temperature measurement device for kneading paste according to claim 3, characterized in that: The protective sleeve (2) comprises a lower tube body, the lower tube body being welded to the outer wall of the top cover (12) of the kneading pot and being connected to the inner cavity of the kneading pot (1) via a through hole provided on the top cover (12) of the kneading pot, the top end of the lower tube body being provided with a lower flange matching the upper connecting flange (3), the upper connecting flange (3) and the lower connecting flange being connected by bolts.

5. The non-contact precise temperature measurement device for kneading paste according to claim 4, characterized in that: The air pressure detection sensor (7) is mounted on the bottom outer wall of the lower tube body.

6. The non-contact precise temperature measurement device for kneading paste according to claim 5, characterized in that: The air outlet of the air inlet pipe (5) extends to the inner middle part of the lower tube body.

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