CN217110254U - Constant temperature control system for lithium hydroxide drying process - Google Patents

Abstract

The utility model discloses a thermostatic control system of lithium hydroxide stoving process relates to drying equipment technical field, and it is including setting up the constant temperature water tank at the stoving incasement portion's stoving temperature sensor, intercommunication heating cabinet, and constant temperature water tank and the water inlet of heating cabinet pass through constant temperature oral siphon intercommunication, the delivery port passes through constant temperature outlet pipe intercommunication, is provided with flowmeter and governing valve on the constant temperature oral siphon. The constant temperature water tank and a heating box of the dryer form a heating cycle; the temperature in the drying box is detected by a drying temperature sensor, and when the temperature of the drying box is reduced to be lower than the required temperature, the regulating valve is adjusted to be large, so that the flow of hot water flowing into the heating box is increased; and when the temperature in the drying box rises to be higher than the required temperature, the regulating valve is adjusted to be small, and the flow of hot water flowing into the heating box is reduced. Through the governing valve, guarantee to get into the hot water flow stability in the heating cabinet, make stoving incasement portion keep the state of constant temperature relatively, prevent that its inside temperature fluctuation is too big, reduce consequently to the influence of the product stoving condition.

Description

Constant temperature control system for lithium hydroxide drying process

Technical Field

The utility model relates to a drying equipment technical field, concretely relates to thermostatic control system of lithium hydroxide drying process.

Background

In the lithium hydroxide production process, a drying step is necessary, and the drying step is generally completed by using drying equipment. Most of drying equipment that adopt at present all is the water stoving type, through heating water promptly, and the hot water that will form after the heating lets in the stoving case below of drying-machine, and hot water dispels the heat to the stoving case on upper portion, provides the temperature and dries the incasement portion product of stoving.

Since the hot water has fluidity, the flow rate of the hot water becomes a decisive factor of the drying temperature. The flow of circulating hot water used by the existing part of drying equipment is unstable, so that the temperature fluctuation in the dryer is overlarge, and the drying condition of a product is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems, the constant temperature control system is provided with the regulating valve, the temperature sensor is arranged in the dryer, the regulating valve is used for regulating the flow of hot water according to the temperature change of the temperature sensor, and the lithium hydroxide drying process with relatively constant temperature in the dryer is ensured.

The utility model adopts the technical scheme as follows:

a constant temperature control system for a lithium hydroxide drying process is communicated with a dryer, the dryer comprises a drying box and a heating box which are arranged up and down, and the heating box is provided with a water inlet and a water outlet; the constant temperature control system of the lithium hydroxide drying process comprises a drying temperature sensor arranged inside a drying box and a constant temperature water tank communicated with the heating box, wherein the constant temperature water tank is communicated with a water inlet of the heating box through a constant temperature inlet pipe, a water outlet of the constant temperature water tank is communicated through a constant temperature outlet pipe, and a flow meter and an adjusting valve are arranged on the constant temperature inlet pipe.

By adopting the technical scheme, water in the constant-temperature water tank enters the heating tank through the constant-temperature water inlet pipe to provide temperature for the drying tank, and then flows into the constant-temperature water tank through the constant-temperature water outlet pipe to form heating circulation; the drying temperature sensor detects the temperature in the drying box in real time, and if the temperature in the drying box is reduced to be lower than the required temperature, the regulating valve is adjusted to be large, and the flow of hot water flowing into the heating box is increased; if the temperature in the drying box rises to be higher than the required temperature, the regulating valve is adjusted to be small, and the flow of hot water flowing into the heating box is reduced; the temperature in the drying box is changed by adjusting the flow, so that the drying box is kept in a relatively constant temperature state.

Preferably, the constant-temperature water inlet pipe is also provided with a delivery pump.

By adopting the technical scheme, the delivery pump is used for providing power for the water in the constant-temperature water tank, so that the water can flow into the heating tank of the dryer.

Preferably, the constant temperature control system for the lithium hydroxide drying process further comprises a controller, the controller is electrically connected with the drying temperature sensor and the regulating valve, the drying temperature sensor transmits the detected temperature of the drying box to the controller in real time, a target drying temperature is preset in the controller, the received temperature of the drying box is compared with the target drying temperature, and if the temperature of the drying box is higher than the target drying temperature, the regulating valve is adjusted to be small; if the temperature of the drying box is equal to the target drying temperature, no operation is performed; if the temperature of the drying box is lower than the target drying temperature, the adjusting valve is adjusted to be large; the size of the regulating valve is displayed through the flow detected by the flowmeter.

By adopting the technical scheme, the automatic constant temperature control of the heating box is realized, the controller obtains the temperature of the drying box through the drying temperature sensor, the adjusting valve is controlled to be adjusted up or down through the relation between the temperature of the drying box and the target drying temperature, the automatic control is integrally realized, and the relatively constant temperature in the drying box is ensured.

Preferably, the constant-temperature water tank comprises a water storage tank and a heater which are arranged up and down; the constant temperature water inlet pipe is communicated with the lower part of the water storage tank, and the constant temperature water outlet pipe is communicated with the upper part of the water storage tank.

By adopting the technical scheme, the lower part of the water storage tank is close to the heater, so that the temperature of the lower part of the water storage tank can reach the preset heating temperature at the fastest speed, and the constant-temperature water inlet pipe is communicated with the lower part of the water storage tank, so that the heated water flows into the heating tank, and the required temperature is provided for the drying tank as soon as possible; the water cooled by heat dissipation in the heating box flows to the upper position of the water storage tank through the constant-temperature water outlet pipe, and then heating circulation is carried out again.

Preferably, a stirrer is arranged in the water storage tank, the stirrer comprises a stirring shaft which is horizontally arranged, the stirring shaft is rotationally connected with the inner wall of the water storage tank, a stirring piece extends along a preset angle, and the end part of the stirring piece is close to the inner wall of the water storage tank; the stirring shaft is connected with a driver, and the driver is positioned outside the water storage tank.

Adopt above-mentioned technical scheme, the agitator starts, and the stirring piece can be with storage water tank upper portion and the water change position of lower part or mix for the great condition of temperature difference can not appear in the inside water of storage water tank.

Preferably, an upper water temperature sensor is arranged at a position close to the upper part in the water storage tank, and a lower water temperature sensor is arranged at a position close to the lower part in the water storage tank.

By adopting the technical scheme, the upper water temperature sensor and the lower water temperature sensor are used for judging the temperature difference between the water close to the upper part and the water close to the lower part of the water storage tank, so that the temperature difference between the upper water temperature sensor and the lower water temperature sensor is prevented from being larger; and is also used for detecting whether the water in the water storage tank is heated to the required temperature.

Preferably, the controller is also electrically connected to the driver, the upper water temperature sensor and the lower water temperature sensor detect the same temperature interval and simultaneously send the same time to the controller, the controller calculates the absolute value of the difference value of the two temperatures and compares the absolute value with the maximum difference value preset in the controller, and if the absolute value is greater than the maximum difference value, the driver is started; if the absolute value is not greater than the maximum difference, no operation is performed.

By adopting the technical scheme, the controller is matched with the stirrer, so that the water temperature difference in the water storage tank is prevented from being large.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the constant temperature water tank and a heating box of the dryer form a heating cycle; the temperature in the drying box is detected by a drying temperature sensor, and when the temperature of the drying box is reduced to be lower than the required temperature, the regulating valve is adjusted to be large, so that the flow of hot water flowing into the heating box is increased; and when the temperature in the drying box rises to be higher than the required temperature, the regulating valve is adjusted to be small, and the flow of hot water flowing into the heating box is reduced. Through the governing valve, guarantee to get into the hot water flow stability in the heating cabinet, make stoving incasement portion keep the state of constant temperature relatively, prevent that its inside temperature fluctuation is too big, reduce consequently to the influence of the product stoving condition.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Fig. 2 is a side view of the agitator shaft and agitator member in combination.

Fig. 3 is a schematic block diagram of the cooperation of the controller with a drying temperature sensor, an upper water temperature sensor, a lower water temperature sensor, a regulating valve and a driver.

The labels in the figure are: a drying temperature sensor-1, a water storage tank-21, a heater-22, a stirrer-23, a stirring shaft-231, a stirring piece-232, a driver-233, an upper water temperature sensor-24, a lower water temperature sensor-25, a constant temperature water inlet pipe-3, a constant temperature water outlet pipe-4, a delivery pump-5, a regulating valve-6, a compressed air source-61, a flow meter-7, a controller-8, a temperature receiving module-81, a comparison module-82, a regulating valve control module-83, a first water temperature receiving module-84, a second water temperature receiving module-85, a difference calculation comparison module-86, a driver control module-87, a dryer-9, a drying box-91, a heating box-92, a water inlet-921, a temperature sensor-23, a stirring shaft-231, a stirring piece-232, a driver-233, a water temperature sensor-24, a lower water temperature sensor-25, a constant temperature water inlet pipe-3, a constant temperature water outlet pipe-4, a delivery pump-5, a regulating valve-6, a compressed air source-61, a flow meter-7, a controller-8, a temperature receiving module-81, a comparison module-82, a drying box-91, a drying box, a drying device, A water outlet-922.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 2, a constant temperature control system for a lithium hydroxide drying process is connected to a dryer 9, the dryer 9 includes a drying box 91 and a heating box 92 disposed up and down, and the heating box 92 is provided with a water inlet 921 and a water outlet 922.

The constant temperature control system of lithium hydroxide stoving process is including setting up at the inside stoving temperature sensor 1 of stoving case 91, the constant temperature water tank of intercommunication heating cabinet 92, and the constant temperature water tank communicates through constant temperature oral siphon 3, delivery port 922 communicates through constant temperature outlet pipe 4 with the water inlet 921 of heating cabinet 92, has set gradually delivery pump 5, governing valve 6 and flowmeter 7 along the rivers direction on the constant temperature oral siphon 3. The delivery pump 5 is used for providing power for the water in the constant-temperature water tank, so that the water can flow into the heating box 92 of the dryer 9; the regulating valve 6 is used for regulating the flow of water in the constant-temperature water inlet pipe 3; the flowmeter 7 is used for detecting the flow of the water in the constant-temperature water inlet pipe 3, namely displaying the adjusting flow of the adjusting valve 6, and facilitating the operator to observe the flow of the water in the constant-temperature water inlet pipe 3 in real time.

Water in the constant-temperature water tank enters the heating tank 92 through the constant-temperature water inlet pipe 3 to provide temperature for the drying tank 91, and then flows into the constant-temperature water tank through the constant-temperature water outlet pipe 4 to form heating circulation; the drying temperature sensor 1 detects the temperature in the drying box 91 in real time, and if the temperature in the drying box 91 is reduced to be lower than the required temperature, the regulating valve 6 is adjusted to be large, and the flow of hot water flowing into the heating box 92 is increased; if the temperature in the drying box 91 rises to be higher than the required temperature, the regulating valve 6 is adjusted to be small, and the flow of the hot water flowing into the heating box 92 is reduced; the temperature in the drying box 91 is changed by adjusting the flow rate, so that the drying box is kept in a relatively constant temperature state.

The constant temperature water tank comprises a water storage tank 21 and a heater 22 which are arranged up and down; the constant temperature water inlet pipe 3 is communicated with the lower part of the water storage tank 21, and the constant temperature water outlet pipe 4 is communicated with the upper part of the water storage tank 21. Because the lower part of the water storage tank 21 is close to the heater 22, the temperature of the lower part of the water storage tank 21 can reach the preset heating temperature at the fastest speed, the constant-temperature water inlet pipe 3 is communicated with the lower part of the water storage tank 21, heated water can flow into the heating box 92, and the required temperature is provided for the drying box 91 as soon as possible; the water cooled by heat dissipation in the heating box 92 flows to the upper position of the water storage tank 21 through the constant temperature water outlet pipe 4, and the heating cycle is performed again.

The water storage tank 21 is internally provided with a stirrer 23, the stirrer 23 comprises a stirring shaft 231 which is horizontally arranged, the stirring shaft 231 is positioned in the middle of the water storage tank 21, two ends of the stirring shaft 231 are respectively rotatably connected with the inner wall of the water storage tank 21, a stirring piece 232 vertically extends from the stirring shaft 231, the stirring piece 232 is in a square frame shape, and the end part of the stirring piece 232 is close to the inner wall of the water storage tank 21 and is used for stirring up water at the bottom of the water storage tank 21 to the maximum extent; storage water tank 21 is worn out to the one end of (mixing) shaft 231 to be connected with driver 233, driver 233 fixes the outer wall at storage water tank 21, driver 233 is the motor, driver 233 starts, and drive (mixing) shaft 231 is rotatory, and then drives stirring piece 232 rotatory, and stirring piece 232 can be with storage water tank 21 upper portion and the water of lower part exchange position or mix for the great condition of temperature difference can not appear in the inside water of storage water tank 21.

An upper water temperature sensor 24 is arranged at a position close to the upper part in the water storage tank 21, and a lower water temperature sensor 25 is arranged at a position close to the lower part; the upper layer water temperature sensor 24 and the lower layer water temperature sensor 25 are respectively used for detecting the water temperature of the water storage tank 21 close to the upper part and the water temperature of the water storage tank 21 close to the lower part, judging the temperature difference of water in the water storage tank 21 and preventing the temperature difference of the water in the upper part and the water in the lower part of the water storage tank 21 from being large; but also for detecting whether the water inside the storage tank 21 is heated to the required temperature. The heater 22 is set according to the temperature of hot water required by the dryer 9, so as to ensure that the water in the water storage tank 21 can be heated to the required temperature of the dryer 9.

Referring to fig. 3, the constant temperature control system for the lithium hydroxide drying process further includes a controller 8, the controller 8 includes a temperature receiving module 81, a comparison module 82, and a regulating valve control module 83, which are electrically connected in sequence, and further includes a first water temperature receiving module 84, a second water temperature receiving module 85, a difference value calculation and comparison module 86, and a driver control module 87, and the first water temperature receiving module 84, the second water temperature receiving module 85, and the driver control module 87 are electrically connected to the difference value calculation and comparison module 86. The controller 8 is a DCS control system.

The temperature receiving module 81 is electrically connected with the drying temperature sensor 1, the comparison module 82 is preset with a target drying temperature, and the regulating valve control module 83 is electrically connected with the regulating valve 6; the drying temperature sensor 1 transmits the temperature of the drying box 91 detected in real time to the temperature receiving module 81, the temperature receiving module 81 transmits the temperature of the drying box 91 to the comparison module 82, the comparison module 82 compares the temperature of the drying box 91 with a preset target drying temperature, if the temperature of the drying box 91 is higher than the target drying temperature, the comparison module 82 generates a higher signal and transmits the higher signal to the regulating valve control module 83, and the regulating valve control module 83 receives the signal and reduces the regulating valve 6; if the temperature of the drying box 91 is equal to the target drying temperature, the comparison module 82 does not perform any operation; if the temperature of the drying box 91 is lower than the target drying temperature, the comparison module 82 generates a lower signal and transmits the lower signal to the regulating valve control module 83, and the regulating valve control module 83 receives the signal and increases the regulating valve 6; the target drying temperature is an integer, and the comparison module 82 only compares the temperature of the drying box 91 with the integer part of the target drying temperature; through the mode, the automatic constant temperature control of the heating box 92 is realized, and the relative constant temperature in the drying box 91 is further ensured.

The first water temperature receiving module 84 is electrically connected to the upper water temperature sensor 24, the second water temperature receiving module 85 is electrically connected to the lower water temperature sensor 25, the maximum difference value of 0.1 ℃ is preset in the difference value calculation and comparison module 86, and the driver control module 87 is electrically connected to the driver 233; the temperatures detected by the upper water temperature sensor 24 and the lower water temperature sensor 25 are simultaneously and respectively sent to a first water temperature receiving module 84 and a second water temperature receiving module 85 at the same time interval, the two water temperature receiving modules respectively send the received water temperature values to a difference value calculation and comparison module 86 at the same time, the difference value calculation and comparison module 86 carries out difference value calculation on the two water temperature values, an absolute value is obtained, the absolute value is compared with a maximum difference value, if the absolute value is larger than the maximum difference value, a signal larger than the absolute value is generated and sent to a driver control module 87, the driver control module 87 receives the signal and starts a driver 233, the stirrer 23 rotates, and the temperature difference of water in the constant temperature water tank is reduced; if the absolute value is not greater than the maximum difference, no operation is performed.

The regulating valve 6 is an air valve which is communicated with a compressed air source 61, and the opening and closing of the regulating valve 6 are controlled by controlling the on-off of the regulating valve 6 and the compressed air source 61, and the opening of the regulating valve 6 is controlled by controlling the amount of the compressed air source 61 entering the regulating valve 6.

When the system comprises the controller 8, the automatic control is realized through the controller 8; when the system does not comprise the controller 8, the control of each part is realized manually by an operator.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (7)

1. The utility model provides a thermostatic control system of lithium hydrate drying process, intercommunication drying-machine, drying-machine is including the stoving case and the heating cabinet that set up from top to bottom, water inlet and delivery port have been seted up to the heating cabinet, a serial communication port, thermostatic control system of lithium hydrate drying process is including setting up the stoving temperature sensor in stoving incasement portion, the thermostatic water tank of intercommunication heating cabinet, the thermostatic water tank communicates through the constant temperature oral siphon with the water inlet of heating cabinet, the delivery port passes through constant temperature outlet pipe intercommunication, be provided with flowmeter and governing valve on the constant temperature oral siphon.

2. The system of claim 1, wherein the constant temperature water inlet pipe is further provided with a delivery pump.

3. The system of claim 2, further comprising a controller electrically connected to the drying temperature sensor and the control valve, wherein the drying temperature sensor transmits the detected drying box temperature to the controller in real time, a target drying temperature is preset in the controller, the target drying temperature is compared with the received drying box temperature, and the control valve is adjusted to be smaller if the drying box temperature is higher than the target drying temperature; if the temperature of the drying box is equal to the target drying temperature, no operation is performed; if the temperature of the drying box is lower than the target drying temperature, the adjusting valve is adjusted to be large; the size of the regulating valve is displayed through the flow detected by the flowmeter.

4. The thermostatic control system for lithium hydroxide drying process according to claim 3, wherein the thermostatic water tank comprises a water storage tank and a heater which are arranged up and down; the constant temperature water inlet pipe is communicated with the lower part of the water storage tank, and the constant temperature water outlet pipe is communicated with the upper part of the water storage tank.

5. The system of claim 4, wherein the water tank is provided with a stirrer, the stirrer comprises a horizontally arranged stirring shaft, the stirring shaft is rotatably connected with the inner wall of the water tank, the stirring shaft extends along a predetermined angle to form a stirring member, and the end of the stirring member is close to the inner wall of the water tank; the stirring shaft is connected with a driver, and the driver is positioned outside the water storage tank.

6. The system of claim 5, wherein an upper water temperature sensor is disposed in the water tank near the upper portion, and a lower water temperature sensor is disposed in the water tank near the lower portion.

7. The system of claim 6, wherein the controller is further electrically connected to the driver, the upper water temperature sensor and the lower water temperature sensor detect the same temperature interval and simultaneously transmit the same time to the controller, the controller calculates an absolute value of the difference between the two temperatures, compares the absolute value with a maximum difference preset inside, and starts the driver if the absolute value is greater than the maximum difference; if the absolute value is not greater than the maximum difference, no operation is performed.

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