Mineral powder feeding device of continuous acidolysis premixing tank

Abstract

The utility model belongs to the technical field of titanium dioxide chemical industry, and particularly relates to a mineral powder feeding device of a continuous acidolysis premixing tank, which comprises a metering hopper, an electric gate valve, a star-shaped discharge valve, the premixing tank, a weighing sensor and a control system, a discharge port of the metering hopper is fixedly connected with the electric gate valve, a valve plate of the electric gate valve covers a feed port of the star-shaped discharge valve, and the feed port of the star-shaped discharge valve is connected with the weighing sensor. The discharge port is communicated with the premixing tank through a pipeline, and the weighing sensor is fixedly connected with the premixing tank; the weighing sensor is in communication connection with an input port of the control system, the electric gate valve is in communication connection with an output port of the control system, the control system is provided with a speed regulation module, and the speed regulation module is in communication connection with the star-shaped discharge valve. And the acidolysis product quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium dioxide chemical industry, in particular to a device for feeding ore powder into a continuous acid decomposition premixing tank. Background Art

[0002] The acid hydrolysis premixing process is the main operation step of the continuous acid hydrolysis reaction. Its purpose is to mix the sulfuric acid and ilmenite powder involved in the reaction so that the ore powder is infiltrated by sulfuric acid and evenly dispersed in the sulfuric acid. The amount of ore powder added needs to be strictly controlled according to the acid-ore ratio. At present, the addition of ore powder is controlled by a weighing sensor to control the regulating valve, and then the addition amount is controlled. However, due to the hysteresis of the valve switch, the amount of ore powder added is inaccurate, affecting the product quality. Utility Model Content

[0003] The utility model aims at the above-mentioned problems and specifically designs a device for feeding mineral powder into a continuous acid hydrolysis premixing tank, so as to reduce the error of mineral powder addition amount, ensure the accurate proportion of premix, and further improve the quality of acid hydrolysis products.

[0004] To achieve the above-mentioned purpose, the utility model provides a device for feeding mineral powder into a continuous acid hydrolysis premixing tank, comprising a metering hopper, an electric gate valve, a star-shaped discharge valve, a premixing tank, a weighing sensor and a control system, wherein the discharge port of the metering hopper is fixedly connected to the electric gate valve, the feed inlet of the star-shaped discharge valve is covered with a valve plate of the electric gate valve, the discharge port is connected to the premixing tank through a pipeline, and the detection end of the weighing sensor is fixedly connected to the premixing tank; the weighing sensor is communicatively connected to the input end of the control system, the electric gate valve is communicatively connected to the output end of the control system, and the control system has a speed control module, and the speed control module is communicatively connected to the star-shaped discharge valve.

[0005] Preferably, a leveling mechanism is provided below the premixing tank, the weighing sensor is fixedly connected to the leveling mechanism, and the premixing tank is overlapped on the weighing sensor.

[0006] Preferably, the leveling mechanism comprises a base plate, an adjusting rod and a supporting plate, the adjusting rod has multiple groups, which are symmetrically arranged and have two ends respectively threadedly connected to the base plate and the supporting plate, and the weighing sensor is fixedly connected to the supporting plate.

[0007] Preferably, the premixing tank is also fixedly provided with a stirring mechanism.

[0008] Preferably, the stirring mechanism includes a power source, a rotating shaft and a stirring blade, the rotating shaft is rotatably connected to the premixing tank, one end of the rotating shaft is fixedly connected to the output shaft of the power source, and the other end is fixedly connected to the stirring blade.

[0009] In summary, the utility model has the following advantages and beneficial technical effects:

[0010] 1. The utility model utilizes a speed regulating module to adjust the running speed of the star-shaped discharge valve. When approaching the weighing set value, the control system controls to reduce the running speed of the star-shaped discharge valve to a low speed in advance, thereby minimizing the weighing error caused by the closing hysteresis of the star-shaped discharge valve and ensuring that the premix ratio is within a reasonable range. The setting of the electric gate valve is used to further isolate the discharge of the metering hopper, reduce the error of the amount of mineral powder added, and improve the quality of the acid hydrolysis product.

[0011] 2. The utility model uses a leveling mechanism to adjust the horizontality of the detection end faces of multiple weighing sensors to avoid inaccurate measurement structures due to local overload or eccentric load, ensure uniform force on the sensors and accuracy of measurement results, and ensure that the premix ratio meets the design requirements.

[0012] 3. The stirring mechanism is set up to fully stir and mix the materials in the premixing tank, accelerate the acid hydrolysis reaction process, and improve the reaction efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 It is a main schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the leveling mechanism in the utility model;

[0016] Figure 3 It is a structural schematic diagram of the adjusting rod in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the stirring mechanism in the utility model;

[0018] Figure 5 It is a cross-sectional schematic diagram of the premixing tank in the utility model.

[0019] The reference numerals in the accompanying drawings are:

[0020] 1. Measuring hopper; 2. Electric gate valve; 3. Star-shaped discharge valve; 4. Premixing tank; 5. Weighing sensor; 6. Leveling mechanism; 61. Bottom plate; 62. Adjusting rod; 63. Support plate;

[0021] 7. stirring mechanism; 71. power source; 72. rotating shaft; 73. stirring blade. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-Figure 5 The utility model is further described in detail:

[0023] like Figure 1 As shown, this embodiment discloses a device for feeding ore powder into a continuous acid hydrolysis premixing tank, comprising a metering hopper 1, an electric gate valve 2, a star-shaped discharge valve 3, a premixing tank 4, a weighing sensor 5 and a control system. The metering hopper 1 is funnel-shaped, and an electric gate valve 2 is fixedly installed at the discharge port below. The star-shaped discharge valve 3 is fixedly connected to the valve seat of the electric gate valve 2 by a fastener, and the valve plate of the electric gate valve 2 covers the inlet of the star-shaped discharge valve 3. The outlet of the star-shaped discharge valve 3 is connected to the cavity of the premixing tank 4 through a pipeline. There are multiple groups of weighing sensors 5, which are symmetrically arranged. At the four corners of the premixing tank 4, and the bottom surface of the premixing tank 4 overlaps the detection end surface of the weighing sensor 5, the control system is a DSC signal controller, the weighing sensor 5 is communicatively connected to the input port of the control system, the motor in the electric plug valve 2 is communicatively connected to the output port of the control system, the control system has a speed control module, the speed control module is connected to the star-shaped unloading valve 3, and three speed modes of the star-shaped unloading valve 3 are set, namely high speed, medium speed and low speed; a leveling mechanism 6 is arranged under the premixing tank 4, and the base of the weighing sensor 5 is fixedly connected to the leveling mechanism 6 by fasteners.

[0024] like Figure 2-Figure 3 As shown, the leveling mechanism 6 includes a base plate 61, an adjusting rod 62 and a support plate 63. A set of leveling mechanisms 6 includes four adjusting rods 62. The adjusting rods 62 are stud bolts with heads, which are symmetrically arranged at the four corners of the base plate 61, and the two ends are respectively threadedly connected to the base plate 61 and the support plate 63. The support plate 63 is provided with a makeshift groove matching the head of the adjusting rod 62, and the base of the weighing sensor 5 is fixedly installed on the support plate 63.

[0025] like Figure 4-Figure 5 As shown, a stirring mechanism 7 is also provided in the cavity of the premixing tank 4; the stirring mechanism 7 includes a power source 71, a rotating shaft 72 and a stirring blade 73. A through hole is provided on the upper end surface of the premixing tank 4. The power source 71 is a motor. The rotating shaft 72 passes through the through hole of the premixing tank 4 and is rotatably connected to the premixing tank 4 through a bearing. The rotating shaft 72 is fixedly connected to the output shaft of the power source 71 through a coupling, and the stirring blade 73 is welded to the outer ring of the rotating shaft 72.

[0026] The working principle of the continuous acid decomposition premixing tank feeding ore powder device of the utility model is:

[0027] 1. The device comprises a metering hopper 1, an electric gate valve 2, a star-shaped discharge valve 3, a premixing tank 4, a weighing sensor 5 and a control system. The metering hopper 1 is funnel-shaped, and an electric gate valve 2 is fixedly installed at the discharge port below. The star-shaped discharge valve 3 is fixedly connected to the valve seat of the electric gate valve 2 by fasteners, and the valve plate of the electric gate valve 2 covers the inlet of the star-shaped discharge valve 3. The outlet of the star-shaped discharge valve 3 is connected to the cavity of the premixing tank 4 through a pipeline. There are multiple groups of weighing sensors 5, which are symmetrically arranged at the four corners of the premixing tank 4, and the bottom surface of the premixing tank 4 overlaps the detection end surface of the weighing sensor 5. The control system is a DSC signal controller. The weighing sensor 5 is communicatively connected to the input port of the control system, and the motor in the electric gate valve 2 is communicatively connected to the output port of the control system. The control system has a speed control module, which is connected to the star-shaped discharge valve 3 to set three speed modes of the star-shaped discharge valve 3, namely high speed, medium speed and low speed; Mineral powder It falls from the discharge port of the metering hopper 1, starts the stepper motor of the electric gate valve 2 and the star-shaped discharge valve 3, the stepper motor drives the screw rod to rotate and open the valve plate, opens the mineral powder discharge passage, and the mineral powder is transported to the cavity of the premixing tank 4 through the pipeline. The weighing sensor 5 monitors the amount of mineral powder added in the premixing tank 4 in real time. The DSC signal controller controls the weighing sensor 5 to be interlocked with the electric gate valve 2 and the star-shaped discharge valve 3 respectively. In the initial stage of material discharge, the star-shaped discharge valve 3 keeps a high-speed state. When the weighing weight reaches 80% of the set value, the speed regulating module switches the speed of the star-shaped discharge valve 3 to the medium-speed mode. When it reaches 90% of the set value, it switches to the slow-speed mode until the weighing sensor 5 detects that the weighing set value is reached, and transmits a signal to the control system. The control system outputs a signal to control the star-shaped discharge valve 3 to stop, and synchronously outputs another signal command to control the stepper motor of the electric gate valve 2 to reverse and close the valve plate, thereby realizing the accurate measurement of the amount of mineral powder added.

[0028] 2. A leveling mechanism 6 is provided below the premixing tank 4, and the base of the weighing sensor 5 is fixedly connected to the leveling mechanism 6 by fasteners; the leveling mechanism 6 includes a base plate 61, an adjusting rod 62 and a support plate 63, and a set of leveling mechanisms 6 includes four adjusting rods 62, the adjusting rods 62 are stud bolts with heads, symmetrically arranged at the four corners of the base plate 61, and the two ends are respectively threadedly connected to the base plate 61 and the support plate 63, and the support plate 63 is provided with a recess matching the head of the adjusting rod 62, and the base of the weighing sensor 5 is fixedly installed on the support plate 63; after the base of the weighing sensor 5 is installed, the horizontality of the support plate 63 is checked by a level meter, if it is detected that the support plate 63 is not horizontal enough, the detection ends of the multiple weighing sensors 5 are not on the same horizontal plane at this time, and it is necessary to adjust the thread screwing depth of the adjusting rod 62, fine-tune the distance between the base plate 61 and the support plate 63, and after the adjustment is completed, use a level meter to recheck until the installation surface of the base of the weighing sensor 5 is detected to be level, so as to achieve the leveling of the leveling mechanism 6.

[0029] 3. A stirring mechanism 7 is also provided in the cavity of the premixing tank 4; the stirring mechanism 7 comprises a power source 71, a rotating shaft 72 and a stirring blade 73. A through hole is provided on the upper end surface of the premixing tank 4. The power source 71 is a motor. The rotating shaft 72 passes through the through hole of the premixing tank 4 and is rotatably connected to the premixing tank 4 through a bearing. The rotating shaft 72 is fixedly connected to the output shaft of the power source 71 through a coupling, and the stirring blade 73 is welded to the outer ring of the rotating shaft 72. The power source 71 outputs power to drive the rotating shaft 72 to drive the stirring blade 73 to rotate, stir the mineral powder and the sulfuric acid, make the two mixed evenly, and realize the accelerated reaction of acid hydrolysis.

[0030] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A device for feeding ore powder into a continuous acid hydrolysis premixing tank, characterized in that: It includes a metering hopper, an electric gate valve, a star-shaped discharge valve, a premixing tank, a weighing sensor and a control system. The discharge port of the metering hopper is fixedly connected to the electric gate valve, the inlet of the star-shaped discharge valve is covered with the valve plate of the electric gate valve, the discharge port is connected to the premixing tank through a pipeline, and the detection end of the weighing sensor is fixedly connected to the premixing tank; the weighing sensor is communicatively connected to the input end of the control system, the electric gate valve is communicatively connected to the output end of the control system, and the control system has a speed control module, and the speed control module is communicatively connected to the star-shaped discharge valve.

2. A device for feeding ore powder into a continuous acid hydrolysis premixing tank according to claim 1, characterized in that: A leveling mechanism is arranged below the premixing tank, the weighing sensor is fixedly connected to the leveling mechanism, and the premixing tank is overlapped on the weighing sensor.

3. A device for feeding ore powder into a continuous acid hydrolysis premixing tank according to claim 2, characterized in that: The leveling mechanism comprises a base plate, an adjusting rod and a supporting plate. The adjusting rods have multiple groups, are symmetrically arranged and have two ends respectively threadedly connected to the base plate and the supporting plate. The weighing sensor is fixedly connected to the supporting plate.

4. A device for feeding ore powder into a continuous acid hydrolysis premixing tank according to claim 3, characterized in that: The premixing tank is also fixedly provided with a stirring mechanism.

5. The device for feeding ore powder into a continuous acid hydrolysis premixing tank according to claim 4, characterized in that: The stirring mechanism comprises a power source, a rotating shaft and a stirring blade. The rotating shaft is rotatably connected to the premixing tank, and one end of the rotating shaft is fixedly connected to the output shaft of the power source, and the other end is fixedly connected to the stirring blade.

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