Automatic continuous alkali preparation system

Abstract

The utility model discloses an automatic continuous alkali preparation system, which effectively solves the problems of inaccurate solid-liquid ratio and the like in manual feeding. Comprising a feeding module, the feeding module comprises a lifting goods elevator and an unstacking robot, and at least one bag feeding belt conveyor is arranged on one side of the unstacking robot; the bag opening module comprises a bag opening machine located on the output side of the bag feeding belt conveyor, a dust remover is arranged on the bag opening machine, an air extracting pump is arranged on the dust remover, and the air extracting pump is connected with the dust remover through a pipeline; the device is ingenious in structure and convenient to use, compared with a mode of manually proportioning solid alkali, an unstacking robot, a bag feeding belt conveyor, a bag unpacking machine and other equipment, automatic equipment is completely adopted for production through the arrangement of the bag unpacking module, the quantitative weighing module, the dissolving module and the like, harm to workers due to toxicity of the solid alkali is avoided, and the production efficiency is improved. And under the mutual cooperation of the weighing hopper and the impeller feeder, the effects of more accurate solid-liquid proportioning and continuous production are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic alkali preparation equipment, in particular to an automatic continuous alkali preparation system. Background Art

[0002] At present, the alkali preparation process is widely used in the fields of grain and oil, industry and chemical industry. However, the unpacking, loading and alkali solution preparation processes of the traditional alkali preparation process are all manual operations.

[0003] The Chinese patent application number CN201821057956.5 discloses a circulating alkali preparation device, including a liquid alkali tank and an alkali preparation box, wherein the liquid alkali tank and the alkali preparation box are connected by a pump, and a alkali dissolving box is fixed in the alkali preparation box, and the alkali dissolving box is provided with a plurality of liquid outlet pipes, and a water pipe is provided above the alkali dissolving box, and the water pipe is provided in the alkali preparation box, and a plurality of nozzles are provided on the water pipe, and a liquid level transmitter is provided in the alkali preparation box. The utility model has a simple structural design and is easy to operate. It not only has low power consumption and low processing cost, but also can directly transport the prepared liquid alkali to the workshop for use through the action of the pump, thereby reducing the labor intensity of workers and improving work efficiency.

[0004] The existing alkali preparation system still has the following problems:

[0005] 1. The solid alkali is directly poured into the dissolving tank by artificial alkali preparation. Not only is the labor cost high, but the solid alkali and alkali solution are toxic to the human body and cause environmental pollution. At the same time, the precision of the solid-liquid ratio is difficult to control, the alkali solution preparation process is difficult to achieve continuity, and the temperature rise of the alkali solution during the preparation process is difficult to control.

[0006] 2. When using lifting equipment to place solid alkali on the conveyor belt, the ratio of the number of transmission belts and lifting equipment is not good. One lifting equipment can only lift materials for at most two conveyor belts, resulting in low product utilization rate and increased equipment costs. Utility Model Content

[0007] In view of the above problems, the present invention provides an automatic continuous alkali preparation system, which has the advantages of accurate solid-liquid proportioning, high degree of automation, cost reduction and efficiency improvement.

[0008] The technical solution is as follows: the utility model comprises:

[0009] A loading module, the loading module comprising a lifting cargo elevator and a depalletizing robot, one side of the depalletizing robot is provided with at least one bag loading belt conveyor;

[0010] A bag unpacking module, the bag unpacking module comprises a bag unpacking machine located at the output side of the bag upper belt conveyor, the bag unpacking machine is provided with a dust collector, the dust collector is provided with an air extraction pump, the air extraction pump is connected to the dust collector through a pipeline, the dust collector is externally connected to instrument air, and a waste bag collector is provided on one side of the bag unpacking machine;

[0011] A quantitative weighing module, wherein the quantitative weighing module comprises a weighing hopper located below the bag unpacking machine, the weighing hopper is connected to the bag unpacking machine through a pipeline, and an impeller feeder is fixedly connected to the bottom of the weighing hopper;

[0012] A dissolving module, wherein the dissolving module comprises a dissolving tank, an agitator is coaxially fixed inside the dissolving tank, the dissolving tank is connected to an impeller feeder through a pipeline, a liquid inlet pipe is arranged on the top of the dissolving tank, a solenoid valve is arranged on the liquid inlet pipe, and desalted water is introduced into the dissolving tank through the liquid inlet pipe;

[0013] A heat exchange module, wherein the heat exchange module comprises a heat exchanger, wherein a No. 1 circulation pipe is connected between the heat exchanger and the dissolving tank, wherein the No. 1 circulation pipe is provided with a liquid alkali circulation pump, wherein the No. 1 circulation pipe is provided with a discharge pipe, wherein the discharge pipe is provided with an electric valve, wherein a No. 2 circulation pipe is fixed to the output end of the heat exchanger, wherein one end of the No. 2 circulation pipe away from the heat exchanger is fixed to the top side of the dissolving tank, and wherein the heat exchanger is externally connected to a cooling water circulation pipeline.

[0014] Preferably, the plurality of bagging belt conveyors are arranged in a circle, and the depalletizing robot is located at the center of the plurality of bagging belt conveyors.

[0015] Preferably, the No. 1 circulation pipe is covered with thermal insulation cotton.

[0016] Preferably, the cooling water circulation pipeline includes an inlet main pipe and a return water main pipe, and the multiple heat exchangers are respectively provided with an inlet branch pipe and an outlet branch pipe, the inlet branch pipe is connected to the inlet main pipe, the outlet branch pipe is connected to the return water main pipe, and valve assemblies are provided on the outlet branch pipe and the inlet branch pipe.

[0017] Preferably, the valve assembly includes a No. 1 main pipe, on which an automatic control valve is provided, a No. 2 branch pipe is provided on the No. 1 main pipe, on which a manual valve is provided, drain pipes are provided on both sides of the automatic control valve, and manual valves are provided on the drain pipes.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. Through the settings of bag unpacking module, quantitative weighing module and dissolving module, compared with the manual proportioning method of solid alkali, the use of equipment such as depalletizing robot, bag loading belt conveyor and bag unpacking machine are all produced by automated equipment, which will not cause harm to workers due to the toxicity of solid alkali. At the same time, with the cooperation of weighing bucket and impeller feeder, the solid-liquid proportioning is more accurate and the production is continuous.

[0020] 2. Through the setting of the heat exchange module, when the temperature inside the dissolving tank rises, the liquid alkali circulation pump starts to pump the liquid inside the dissolving tank into the heat exchanger. After the liquid alkali exchanges heat with the cooling water, it re-enters the dissolving tank through the No. 2 circulation pipe. When the liquid alkali re-enters the dissolving tank, part of the liquid alkali will contact the rotating agitator during the falling process, and the liquid alkali will be dispersed. During the dispersion process, the liquid alkali further cools down, thereby achieving a better temperature control effect.

[0021] 3. Through the setting of multiple bagging conveyors and a depalletizing robot, the effect of one lifting equipment serving multiple bagging conveyors is achieved, which not only greatly improves the production efficiency, but also effectively guarantees the equipment cost of the factory, achieving the effect of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a plan view of the utility model.

[0023] Figure 2 It is a plan view of the alkali preparation equipment in the utility model.

[0024] Figure 3 It is a plan view of the alkali preparation equipment from another angle in the utility model.

[0025] Figure 4 This utility model Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0026] Figure 5 It is a schematic diagram of three bagging belt conveyors and a depalletizing robot in the utility model.

[0027] Figure 6 It is a schematic structural diagram of the fan-shaped distribution of the upper bag belt conveyor in the utility model.

[0028] Figure 7 It is a schematic diagram of four bagging belt conveyors and a depalletizing robot in the utility model.

[0029] Explanation of the symbols in the schematic diagram:

[0030] 1. Freight lift; 2. Destacking robot; 3. Bag loading conveyor; 4. Bag removing machine; 5. Dust collector; 6. Vacuum pump; 7. Waste bag collector; 8. Weighing bucket; 9. Impeller feeder; 10. Dissolving tank; 11. Agitator; 12. Heat exchanger; 13. Liquid alkali circulation pump. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Depend on Figures 1 to 4 Given, including:

[0033] A loading module, wherein the loading module comprises a freight elevator 1 and a depalletizing robot 2. The depalletizing robot 2 is a prior art and will not be described in detail herein. However, it should be noted that the depalletizing robot 2 can rotate and can perform hoisting operations in 360 degrees in all directions. At least one bagging belt conveyor 3 is arranged on one side of the depalletizing robot 2. In actual production in the factory area, the solid alkali is located inside the packing bag and is transported to the designated floor by the freight elevator 1. A ground forklift (either a manual forklift or an automatic forklift) is used to transport the packing bag to the hoisting area near the depalletizing robot 2. The depalletizing robot 2 is provided with a gripper, and the packing bag can be placed on the corresponding conveyor belt by the gripper;

[0034] The bag unpacking module includes a bag unpacking machine 4 located at the output side of the upper bag belt conveyor 3. The packing bags enter the bag unpacking machine 4 under the transportation of the conveyor belt. The bag unpacking machine 4 is a prior art and will not be described in detail here. After the packing bags enter the bag unpacking machine 4, the blades inside the bag unpacking machine 4 cut the packing bags, and the solid alkali is scattered inside the bag unpacking machine 4 and slides downward under the action of gravity. In order to avoid a large amount of smoke and dust from being raised at the feeding port of the bag unpacking machine 4, a dust collector 5 is provided on the bag unpacking machine 4, and an air pump 6 is provided on the dust collector 5. The air pump 6 is connected to the dust collector 5 through a pipeline. In this embodiment In the example, the dust collector 5 is a bag dust collector 5, and the dust inside the bag unpacking machine 4 enters the dust collector 5 under the action of negative pressure. The dust collector 5 is externally connected to instrument air. The instrument air is a processed compressed air specially used for pneumatic equipment of industrial automation and control systems. It is delivered from an air compression station and goes through a series of purification processes (including oil removal, water removal, dust removal, etc.) to achieve a higher purification level to ensure that sensitive instrument equipment will not be damaged or cause operational failures. A waste bag collector 7 is provided on one side of the bag unpacking machine 4. The waste bag collector 7 is a prior art and will not be described in detail here.

[0035] In order to more accurately control the fusion ratio of solid alkali and subsequent desalted water (pure water), a quantitative weighing module is provided, which includes a weighing bucket 8 located below the bag unpacking machine 4. A gravity sensor is arranged inside the weighing bucket 8. The weighing bucket 8 is connected to the bag unpacking machine 4 through a pipeline. The solid alkali inside the bag unpacking machine 4 enters the weighing bucket 8 through the pipeline. The weighing bucket 8 weighs the solid alkali accurately. An automatic valve, such as a pneumatic butterfly valve, is arranged inside the weighing bucket 8. When the solid alkali inside the weighing bucket 8 reaches a certain weight, the weighing bucket 8 stops feeding and the automatic valve opens. The material enters the next process through the pipeline. At the same time, in order to further ensure the accuracy of the solid alkali batching process, the bottom of the weighing bucket 8 is fixedly connected with an impeller feeder 9. The impeller feeder 9 is a star-shaped discharger, which is mainly used for material transmission and quantitative feeding. It has the advantages of compact structure and convenient maintenance. The impeller feeder 9 is directly connected to the bottom output pipe of the weighing bucket 8. The reason why the star-shaped discharger is selected instead of the screw conveyor is that when the screw conveyor is conveying, due to the extrusion between the auger and the pipe wall, the solid alkali (powder) is easy to agglomerate, which is not conducive to subsequent dissolution.

[0036] A dissolving module, wherein the dissolving module comprises a dissolving tank 10, wherein a temperature sensor and a liquid level sensor are arranged inside the dissolving tank 10, wherein an agitator 11 is coaxially fixed inside the dissolving tank 10, wherein the dissolving tank 10 is connected to an impeller feeder 9 through a pipeline, wherein the impeller feeder 9 quantitatively transports the solid alkali to the inside of the dissolving tank 10, wherein a liquid inlet pipe is arranged on the top of the dissolving tank 10, wherein an electromagnetic valve is arranged on the liquid inlet pipe, wherein the liquid capacity inside the liquid inlet pipe is controlled by the feedback information of the liquid level sensor and the electromagnetic valve, so as to achieve the effect of solid-liquid balanced dissolution, wherein the dissolving tank 10 introduces desalted water through the liquid inlet pipe, and through the arrangement of a bag dismantling module, a quantitative weighing module and a dissolving module, compared with the method of manually proportioning the solid alkali, the use of equipment such as a destacking robot 2, a bagging belt conveyor 3 and a bag dismantling machine 4, etc., all adopts automated equipment for production, and will not cause harm to workers due to the toxicity of the solid alkali, and at the same time, under the cooperation of the weighing bucket 8 and the impeller feeder 9, a more accurate solid-liquid proportioning and a continuous production effect are achieved;

[0037] Taking into account that a large amount of heat release occurs during the dissolution of solid alkali with desalted water (pure water), the temperature of the alkali solution inside the dissolving tank 10 is not easy to control, and a heat exchange module is arranged on one side of the dissolving tank 10, wherein the heat exchange module comprises a heat exchanger 12, and a No. 1 circulation pipe is connected between the heat exchanger 12 and the dissolving tank 10, one end of the No. 1 circulation pipe is connected to one side of the bottom of the dissolving tank 10, and the other end of the No. 1 circulation pipe is connected to the input end of the heat exchanger 12, and a liquid alkali circulation pump 13 is arranged on the No. 1 circulation pipe connected with the liquid alkali circulation pump 13 and the heat exchanger 12, and an electric valve is arranged on the No. 1 circulation pipe, and the electric valve is arranged on the No. 1 circulation pipe, and the discharge pipe is used for discharging liquid alkali, and when the liquid alkali inside the dissolving tank 10 is fully fused and at a suitable temperature, the electric valve on the discharge pipe is opened, and the heat exchange valve corresponding to the heat exchanger 12 is closed. Closed, in order to discharge the material, a No. 2 circulation pipe is fixed to the output end of the heat exchanger 12, and the end of the No. 2 circulation pipe away from the heat exchanger 12 is fixed to the top side of the dissolving tank 10, and the heat exchanger 12 is externally connected to a cooling water circulation pipeline. Through the setting of the heat exchange module, when the temperature inside the dissolving tank 10 rises, the liquid alkali circulation pump 13 is started to draw the liquid inside the dissolving tank 10 into the heat exchanger 12. A cooling coil is arranged inside the heat exchanger 12, and cooling water flows in the cooling coil. After the liquid alkali exchanges heat with the cooling water, it re-enters the dissolving tank 10 through the No. 2 circulation pipe. It should be noted that the No. 2 circulation pipe is connected to the top of the dissolving tank 10. When the liquid alkali re-enters the dissolving tank 10, part of the liquid alkali will contact with the rotating agitator 11 during the falling process, and the liquid alkali will be scattered. During the scattering process, the liquid alkali is further cooled, so as to achieve a better temperature control effect.

[0038] refer to Figures 5 to 7 As shown, in order to improve the matching efficiency of the lifting equipment and the conveying equipment, so that one lifting equipment can lift multiple conveying equipment at the same time, so as to achieve the effect of reducing costs and increasing efficiency, the multiple bagging belt conveyors 3 are arranged in a circle, and the destacking robot 2 is located at the center of the multiple bagging belt conveyors 3. The multiple bagging belt conveyors 3 may not be evenly distributed in an equal circle, such as a fan-shaped arrangement. It is only necessary to ensure that the placement area of ​​the packing bags is placed evenly. For example, a packing bag placement space can be set between two bagging belt conveyors 3, or the packing bag area can be placed at the end of the multiple bagging belt conveyors 3. Through the setting of multiple bagging belt conveyors 3 and a destacking robot 2, the effect of one lifting equipment serving multiple bagging belt conveyors 3 is achieved, which not only greatly improves the production efficiency, but also effectively guarantees the equipment cost of the factory area, thereby achieving the effect of reducing costs and increasing efficiency.

[0039] refer to Figure 1As shown, in order to prevent workers from accidentally touching the No. 1 circulation pipe and causing burns, the No. 1 circulation pipe is covered with insulation cotton.

[0040] refer to Figure 1 As shown, further, the cooling water circulation pipeline includes an inlet main pipe and a return main pipe, and a plurality of the heat exchangers 12 are respectively provided with an inlet branch pipe and an outlet branch pipe, the inlet branch pipe is connected to the inlet main pipe, the outlet branch pipe is connected to the return main pipe, and the outlet branch pipe and the inlet branch pipe are provided with a valve assembly. Through the arrangement of the inlet main pipe, the return main pipe and the valve assembly, the number of branches connected to the heat exchanger 12 is increased accordingly according to the actual production needs;

[0041] It should be further supplemented that the number of heat exchangers 12 can be less than the number of dissolution tanks 10. For example, if two or more dissolution tanks 10 are connected to the heat exchanger 12, it is only necessary to set a solenoid valve on the No. 2 circulation pipe of the corresponding dissolution tank 10.

[0042] refer to Figure 1 As shown, in order to ensure the long-term use of the valve assembly, the valve assembly includes a No. 1 main pipe, an automatic control valve is arranged on the No. 1 main pipe, valves are arranged on both sides of the automatic control valve, a No. 2 branch pipe is arranged on the No. 1 main pipe, a manual valve is arranged on the No. 2 branch pipe, drain pipes are arranged on both sides of the automatic control valve, the drain pipes are connected with the drainage ditch in the factory area, and manual valves are arranged on the drain pipes. When inspecting the automatic control valve, the valves on both sides of the automatic control valve are first closed, and the valve on the No. 2 branch pipe and the valves corresponding to the two drain pipes are opened. On this basis, the automatic control valve can be inspected.

[0043] When the utility model is used:

[0044] First, the solid alkali is transported to the designated floor by the freight elevator 1, and the packing bags are transported to the hoisting area near the depalletizing robot 2 by a ground forklift (either a manual forklift or an automatic forklift). The depalletizing robot 2 is equipped with a gripper, which places the packing bags on the corresponding conveyor belt;

[0045] Then, the packing bag enters the bag opening machine 4 under the transportation of the conveyor belt, and the blade inside the bag opening machine 4 cuts the packing bag, and the solid alkali is scattered inside the bag opening machine 4, and slides down to the inside of the weighing bucket 8 under the action of gravity. The weighing bucket 8 weighs the solid alkali accurately, and the waste bag enters the inside of the waste bag collector 7;

[0046] At the same time, the vacuum pump 6 is started, and the dust inside the bag remover 4 enters the dust collector 5 under the action of negative pressure;

[0047] Secondly, when the solid alkali in the weighing hopper 8 reaches a certain weight, the weighing hopper 8 stops feeding, the automatic valve opens, and the solid alkali directly enters the impeller feeder 9. The impeller feeder 9 quantitatively transports the solid alkali to the dissolving tank 10, and the agitator 11 starts;

[0048] Finally, when the temperature inside the dissolving tank 10 rises, the liquid alkali circulation pump 13 is started to draw the liquid inside the dissolving tank 10 into the heat exchanger 12. A cooling coil is provided inside the heat exchanger 12, and cooling water flows in the cooling coil. After the liquid alkali exchanges heat with the cooling water, it re-enters the dissolving tank 10 through the No. 2 circulation pipe. When the liquid alkali inside the dissolving tank 10 is fully integrated and at a suitable temperature, the electric valve on the discharge pipe is opened, and the heat exchange valve corresponding to the heat exchanger 12 is closed, so as to discharge the material.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic continuous alkali preparation system, characterized in that: include: A loading module, the loading module comprising a lifting cargo elevator (1) and a depalletizing robot (2), and at least one bag loading belt conveyor (3) is arranged on one side of the depalletizing robot (2); A bag unpacking module, the bag unpacking module comprising a bag unpacking machine (4) located at the output side of the bag upper belt conveyor (3), the bag unpacking machine (4) being provided with a dust collector (5), the dust collector (5) being provided with an air extraction pump (6), the air extraction pump (6) being connected to the dust collector (5) through a pipeline, the dust collector (5) being externally connected to instrument air, and a waste bag collector (7) being provided on one side of the bag unpacking machine (4); A quantitative weighing module, the quantitative weighing module comprising a weighing hopper (8) located below the bag opening machine (4), the weighing hopper (8) being connected to the bag opening machine (4) via a pipeline, and an impeller feeder (9) being fixedly connected to the bottom of the weighing hopper (8); A dissolving module, the dissolving module comprising a dissolving tank (10), an agitator (11) being coaxially fixed inside the dissolving tank (10), the dissolving tank (10) being connected to an impeller feeder (9) via a pipeline, a liquid inlet pipe being arranged at the top of the dissolving tank (10), a solenoid valve being arranged on the liquid inlet pipe, and desalted water being introduced into the dissolving tank (10) via the liquid inlet pipe; A heat exchange module, the heat exchange module comprising a heat exchanger (12), a No. 1 circulation pipe being connected between the heat exchanger (12) and the dissolving tank (10), a liquid alkali circulation pump (13) being arranged on the No. 1 circulation pipe, a feed pipe being arranged on the No. 1 circulation pipe, an electric valve being arranged on the feed pipe, a No. 2 circulation pipe being fixed to the output end of the heat exchanger (12), an end of the No. 2 circulation pipe being away from the heat exchanger (12) being fixed to the top side of the dissolving tank (10), and the heat exchanger (12) being externally connected to a cooling water circulation pipeline.

2. The automatic continuous alkali preparation system according to claim 1, characterized in that: The plurality of bagging belt conveyors (3) are arranged in a circle, and the depalletizing robot (2) is located at the center of the circle of the plurality of bagging belt conveyors (3).

3. The automatic continuous alkali preparation system according to claim 1, characterized in that: The No. 1 circulation pipe is sheathed with heat-insulating cotton.

4. The automatic continuous alkali preparation system according to claim 1, characterized in that: The cooling water circulation pipeline comprises a water inlet main pipe and a water return main pipe, and a plurality of the heat exchangers (12) are respectively provided with a water inlet branch pipe and a water outlet branch pipe, the water inlet branch pipe is connected to the water inlet main pipe, the water outlet branch pipe is connected to the water return main pipe, and valve assemblies are provided on the water outlet branch pipe and the water inlet branch pipe.

5. The automatic continuous alkali preparation system according to claim 4, characterized in that: The valve assembly includes a No. 1 main pipe, on which an automatic control valve is arranged, a No. 2 branch pipe is arranged on the No. 1 main pipe, on which a manual valve is arranged, drain pipes are arranged on both sides of the automatic control valve, and manual valves are arranged on the drain pipes.

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