Water solution height limit control device

Abstract

The utility model discloses a water solution height limit control device which comprises a detection structure, a liquid level adjusting structure and a control structure, the liquid level adjusting structure comprises an adjusting air cylinder, a first electromagnetic valve and a second electromagnetic valve, and the adjusting air cylinder is used for adjusting the feeding amount of a distribution groove; a first adjusting gas path and a second adjusting gas path are formed between a valve opening gas port of the adjusting cylinder and the first electromagnetic valve, the first adjusting gas path is used for controlling the adjusting cylinder to open a feeding port of the distribution groove, and the second adjusting gas path is used for controlling the adjusting cylinder to close the feeding port; an exhaust gas path is formed between a valve closing gas port of the adjusting cylinder and the second electromagnetic valve; the control structure controls the liquid level adjusting structure to switch the first adjusting gas circuit and the second adjusting gas circuit according to the liquid level height of the aqueous solution detected by the detection structure, and controls the feeding port to open to supplement the aqueous solution or close to stop supplementing the aqueous solution. The device can quickly switch gas paths according to the liquid level condition so as to push the adjusting cylinder to close or open the feeding port in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of sugar-making equipment, and particularly relates to an aqueous solution height-limiting control device. Background Art

[0002] In the production processes of chemical and food enterprises, before some intermediate products enter the next process for treatment, the liquid materials need to be first put into a distribution tank for temporary storage and then enter the next treatment process after being redistributed. This process has specific requirements for the liquid level of the distribution tank, neither too low nor overflowing. A too low liquid level will affect the feeding progress of the next process, and a too high liquid level is likely to cause overflow, resulting in material loss from the tank body. In the existing technology, generally, a detection structure is used to detect the liquid level and an adjusting cylinder is controlled to open and close the feeding port, but the switching between the closing valve and the opening valve of the adjusting cylinder takes a certain amount of time and cannot achieve rapid switching, resulting in the inability of the adjusting cylinder to close or open quickly and timely, and there is still a risk of liquid overflow or insufficient materials in the distribution tank. Content of the Utility Model

[0003] In order to solve the above problems, the utility model provides an aqueous solution height-limiting control device, which can quickly switch the gas path according to the liquid level situation to drive the adjusting cylinder to close or open the feeding port in time.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] An aqueous solution height-limiting control device, comprising:

[0006] A detection structure for detecting the liquid level of the aqueous solution in the distribution tank;

[0007] A liquid level adjusting structure, which includes an adjusting cylinder, a first electromagnetic valve and a second electromagnetic valve. The adjusting cylinder is used to adjust the feeding amount of the distribution tank. A first adjusting gas path and a second adjusting gas path are formed between the valve opening gas port of the adjusting cylinder and the first electromagnetic valve. The first adjusting gas path is used to control the adjusting cylinder to open the feeding port of the distribution tank, and the second adjusting gas path is used to control the adjusting cylinder to close the feeding port. An exhaust gas path is formed between the valve closing gas port of the adjusting cylinder and the second electromagnetic valve, and the exhaust gas path is used to discharge the stored gas in the adjusting cylinder; and

[0008] A control structure, which is electrically connected to the detection structure and the liquid level adjusting structure respectively. Through the liquid level height of the aqueous solution detected by the detection structure, the control structure controls the liquid level adjusting structure to perform the conversion between the first adjusting gas path and the second adjusting gas path, and controls the opening of the feeding port to supplement the aqueous solution or the closing to stop supplementing the aqueous solution;

[0009] Among them, the first solenoid valve and the second solenoid valve are connected in parallel.

[0010] Preferably, the liquid level regulating structure further includes a valve positioner. The valve positioner includes an air inlet end, a first air outlet end, and a second air outlet end. The first air outlet end is communicated with the valve opening air port, and the second air outlet end is communicated with the valve closing air port. The control structure connects the first solenoid valve with the air inlet end, converts the second regulating air path into a first regulating air path, and adjusts the opening degree of the regulating cylinder through the valve positioner.

[0011] Preferably, the control structure includes a main controller, a liquid level relay, and an intermediate relay. The liquid level relay is electrically connected to the detection structure, and the intermediate relay is electrically connected to the first solenoid valve and the second solenoid valve. The intermediate relay controls the mutual conversion of the first regulating air path and the second regulating air path and the opening and closing of the exhaust air path according to the liquid level condition of the distribution tank.

[0012] Preferably, the detection structure includes a detection electrode and an auxiliary electrode. The detection electrode is arranged at the notch of the distribution tank and is perpendicular to the notch. One end of the detection electrode is inserted into the distribution tank, and the auxiliary electrode is arranged at the low position of the distribution tank. The detection electrode and the auxiliary electrode are respectively electrically connected to the liquid level relay.

[0013] Preferably, the distribution tank is provided with an insulating bracket for erecting the detection electrode.

[0014] Preferably, the insulating bracket includes a connecting portion and a clamping portion. The connecting portion is perpendicular to the clamping portion, and the clamping portion is parallel to the notch. The clamping portion is used for clamping the detection electrode.

[0015] Preferably, a discharge pipe is arranged on one side of the bottom of the distribution tank for conveying the aqueous solution to the next process. The discharge pipe is provided with a control valve for controlling the discharge rate.

[0016] Compared with the existing technology, the beneficial effects of the present utility model are as follows:

[0017] By detecting whether the liquid level in the distribution tank reaches the set high-level detection point through the detection structure, when the liquid level reaches the highest point, the liquid level control structure obtains the detection signal of the detection structure, triggers the liquid level regulating structure to reverse the air path of the first solenoid valve, closes the regulating cylinder, and stops feeding materials into the distribution tank, so as to prevent material overflow in the tank. At the same time, when the liquid level is lower than the high-level detection point, the air path is switched, the regulating cylinder is opened, the feeding port is opened, and materials are fed into the distribution tank through the feeding port. This process is repeated in a cycle, with automatic control, which improves the switching speed of the regulating cylinder for closing and opening the valve, thereby improving the working efficiency. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the gas circuit process of the aqueous solution height limit control device of the present utility model;

[0019] Figure 2 is a schematic diagram of the electrical control of the aqueous solution height limit control device of the present utility model;

[0020] Figure 3 is an assembly schematic diagram of the aqueous solution height limit control device of the present utility model.

[0021] In the drawings, 1 - detection structure, 11 - detection electrode, 12 - auxiliary electrode, 2 - liquid level adjustment structure, 21 - adjustment cylinder, 211 - valve - closing air port, 212 - valve - opening air port, 22 - first solenoid valve, 23 - second solenoid valve, 24 - valve positioner, 3 - control structure, 31 - liquid level relay, 32 - intermediate relay, 4 - first adjustment air circuit, 5 - second adjustment air circuit, 6 - exhaust air circuit, 7 - distribution tank, 71 - feeding port, 72 - insulating support, 73 - discharge pipe. Detailed Embodiments

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the drawings.

[0023] When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present utility model. On the contrary, they are merely examples of devices and methods that are consistent with some aspects of the present utility model as detailed in the appended claims.

[0024] In the description of the present utility model, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, "a plurality of" means two or more. "And / or" describes the associated relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] To solve the above problems, please refer to Figures 1 to 3 , this utility model provides an aqueous solution height limit control device, including a detection structure 1, a liquid level adjustment structure 2 and a control structure 3. The detection structure 1 is used to detect the aqueous solution liquid level of the distribution tank 7; the liquid level adjustment structure 2 includes an adjustment cylinder 21, a first solenoid valve 22 and a second solenoid valve 23. The adjustment cylinder 21 is used to adjust the feeding amount of the distribution tank 7. A first adjustment air path 4 and a second adjustment air path 5 are formed between the valve opening air port 212 of the adjustment cylinder 21 and the first solenoid valve 22. The first adjustment air path 4 is used to control the adjustment cylinder 21 to open the feeding port 71 of the distribution tank 7, and the second adjustment air path 5 is used to control the adjustment cylinder 21 to close the feeding port 71. An exhaust air path 6 is formed between the valve closing air port 211 of the adjustment cylinder 21 and the second solenoid valve 23. The exhaust air path 6 is used to discharge the stored air in the adjustment cylinder 21; the control structure 3 is electrically connected to the detection structure 1 and the liquid level adjustment structure 2 respectively. According to the height of the aqueous solution liquid level detected by the detection structure 1, the control structure 3 controls the liquid level adjustment structure 2 to perform the conversion between the first adjustment air path 4 and the second adjustment air path 5, and controls the feeding port 71 to open to supplement the aqueous solution or close to stop supplementing the aqueous solution; wherein, the first solenoid valve 22 and the second solenoid valve 23 are connected in parallel.

[0027] In an alternative embodiment, as Figure 1As shown, the liquid level adjustment structure 2 further includes a valve positioner 24. The valve positioner 24 includes an air inlet end, a first air outlet end, and a second air outlet end. The first air outlet end is communicated with the valve opening air port 212, and the second air outlet end is communicated with the valve closing air port 211. The control structure 3, the first solenoid valve 22 is communicated with the air inlet end, and converts the second adjustment air path 5 into a first adjustment air path 4, and adjusts the opening degree of the adjustment cylinder 21 through the valve positioner 24. Specifically, the air inlet end corresponds to the SUP port shown in the figure, the first air outlet end corresponds to OUT1, and the second air outlet end corresponds to OUT2. When the control structure 3 controls the A end of the first solenoid valve 22 to be communicated with the air inlet end, at this time, the first solenoid valve 22 supplies air to the valve positioner 24, and the opening degree of the adjustment cylinder 21 is set by the control structure 3. The valve positioner 24 controls the first air outlet end and the second air outlet end to jointly adjust the opening degree of the adjustment cylinder 21 according to this set value, and further adjusts the feeding rate.

[0028] In an alternative embodiment, as Figure 2 shown, the control structure 3 includes a main controller, a liquid level relay 31, and an intermediate relay 32. The liquid level relay 31 is electrically connected to the detection structure 1, and the intermediate relay 32 is electrically connected to the first solenoid valve 22 and the second solenoid valve 23. The intermediate relay 32 controls the mutual conversion of the first adjustment air path 4 and the second adjustment air path 5 and the opening and closing of the exhaust air path 6 according to the liquid level condition of the distribution tank 7. Specifically, the main controller receives the liquid level information of the detection structure 1 and judges whether the liquid level of the aqueous solution in the distribution tank 7 reaches the set highest level. When the liquid level reaches the highest level, the liquid level relay 31 controls the intermediate relay 32 to open the second adjustment air path 5 between the first solenoid valve 22 and the adjustment cylinder 21 and open the exhaust air path 6 between the second solenoid valve 23 and the adjustment cylinder 21 to quickly close the feeding port 71. When the height of the aqueous solution is lower than the set height, the liquid level relay 31 controls the intermediate relay 32 to open the first adjustment air path 4 between the first solenoid valve 22 and the adjustment cylinder 21 and close the second solenoid valve 23 to quickly open the feeding port 71 and further supplement the aqueous solution to the distribution tank 7 to make the aqueous solution reach the set liquid level. By repeating the switching of the first adjustment air path 4 and the second adjustment air path 5, the aqueous solution in the distribution tank 7 can meet the feeding supply and demand without overflowing the distribution tank 7.

[0029] In an alternative embodiment, as Figure 2As shown in the figure, the detection structure 1 includes a detection electrode 11 and an auxiliary electrode 12. The detection electrode 11 is arranged at the notch of the distribution tank 7 and is perpendicular to the notch. One end of the detection electrode 11 is inserted into the distribution tank 7. The auxiliary electrode 12 is arranged at the lower position of the distribution tank 7. The detection electrode 11 and the auxiliary electrode 12 are respectively electrically connected to the liquid level relay 31. Specifically, the liquid level relay 31 is provided with two input terminals, which are respectively electrically connected to the detection electrode 11 and the auxiliary electrode 12. The normally open contact of the liquid level relay 31 is electrically connected to the intermediate relay 32, and the normally open contact of the intermediate relay 32 is electrically connected to the first solenoid valve 22 and the second solenoid valve 23. Further, when the aqueous solution in the distribution tank 7 just contacts the detection electrode 11, the detection electrode 11 and the auxiliary electrode 12 form a closed loop. The intermediate relay 32 controls the A end of the first solenoid valve 22 to switch to the corresponding B end, so that the first regulating air path 4 is converted into the second regulating air path 5, and controls the R end of the second solenoid valve 23 to switch to the corresponding P end, so that the P end of the second solenoid valve 23 is communicated with the A end of the second solenoid valve 23, and the exhaust air path 6 is opened, and the air at the bottom of the regulating cylinder 21 is discharged to the outside through the exhaust air path 6 to accelerate the valve closing speed; when the liquid level of the aqueous solution in the distribution tank 7 cannot reach the detection end of the detection electrode 11, an open circuit is formed between the detection electrode 11 and the auxiliary electrode 12. The intermediate relay 32 controls the B end of the first solenoid valve 22 to switch to the corresponding A end, so that the second regulating air path 5 is switched to the first regulating air path 4, and controls the P end of the second solenoid valve 23 to switch to the corresponding R end.

[0030] Further, the detection electrode 11 is one of metal rods such as a copper alloy silver-plated electrode, a nickel silver alloy electrode, a zinc silver copper alloy electrode, a stainless steel electrode, and a silver-silver chloride electrode, all of which have good electrical conductivity. In this embodiment, a stainless steel electrode is used as the detection electrode 11, and its length is 50 mm to 80 mm and its diameter is 5 mm to 8 mm, which has a high detection accuracy. The auxiliary electrode 12 is a screw rod made of metal.

[0031] In an alternative embodiment, as Figure 3 shown, the distribution tank 7 is provided with an insulating bracket 72, and the insulating bracket 72 is used to support the detection electrode 11. The detection electrode 11 is stably installed in the distribution tank 7 through the insulating bracket 72, and at the same time, the detection accuracy of the detection structure 1 can be improved.

[0032] In an alternative embodiment, as Figure 3As shown in the figure, the insulating bracket 72 includes a connecting portion and a clamping portion. The connecting portion is perpendicular to the clamping portion, and the clamping portion is parallel to the notch. The clamping portion is used to clamp the detection electrode 11. One end of the connecting portion away from the clamping portion can be welded or threadedly connected to the distribution groove 7, while the clamping portion enables the detachable connection of the detection electrode 11, facilitating the adjustment of the length of the detection electrode 11 extending into the distribution groove 7 and also facilitating the replacement of the detection electrode 11.

[0033] In an alternative embodiment, as Figure 3 shown, a discharge pipe 73 is provided on one side of the bottom of the distribution groove 7 for conveying the aqueous solution to the next process. A control valve is provided on the discharge pipe 73, and the control valve is used to control the discharge rate.

[0034] Working principle: When the liquid level rises to the detection point of the detection electrode 11, the detection electrode 11 and the auxiliary electrode 12 form a closed loop through the aqueous solution, causing the liquid level relay 31 to actuate and close, further triggering the intermediate relay 32 to actuate and close, so that the first solenoid valve 22 and the second solenoid valve 23 are energized and operate. The first regulating air path 4 is converted into the second regulating air path 5, that is, the compressed air is output from the B end of the first solenoid valve 22 to the valve closing air port 211 of the regulating cylinder 21 through the second regulating air path 5 to achieve emergency valve closing. The P end of the second solenoid valve 23 communicates with its corresponding A end, and the air stored in the lower part of the regulating cylinder 21 is discharged through the exhaust air path 6 between the second solenoid valve 23 and the valve closing air port 211 of the regulating cylinder 21 to accelerate the valve closing speed of the regulating cylinder 21. When the liquid level drops and disengages from the detection electrode 11, the liquid level relay 31 and the intermediate relay 32 are reset, and the first solenoid valve 22 and the second solenoid valve 23 return to their initial positions. At this time, the air path between the first solenoid valve 22 and the regulating cylinder 21 is converted from the second regulating air path 5 to the first regulating air path 4, and the opening degree of the regulating cylinder 21 is restored to be controlled by the first air outlet end and the second air outlet end of the valve positioner 24. In practical applications, the same distribution groove 7 can be matched with multiple feeding ports 71. A set of liquid level regulating structures 2 is correspondingly provided for each feeding port 71. The first solenoid valves 22 and the second solenoid valves 23 of each set of liquid level regulating structures 2 are all connected in parallel together and are controlled by the normally open contacts of the intermediate relay 32. When the intermediate relay 32 actuates and closes, all the first solenoid valves 22 and the second solenoid valves 23 act simultaneously to switch the corresponding air paths, so as to achieve the simultaneous closing of all the regulating cylinders 21 to stop feeding or the simultaneous opening to supplement materials.

[0035] In summary, by detecting whether the liquid level in the distribution tank 7 reaches the set high-level detection point through the detection structure 1, when the liquid level reaches the highest point, the input end of the liquid level relay 31 receives the detection signal from the detection structure 1, triggering the liquid level adjustment structure 2 to reverse the air path of the first solenoid valve 22, causing the adjustment cylinder 21 to close and the feeding port 71 to stop feeding the distribution tank 7, thus preventing material overflow from the box and tank. At the same time, when the liquid level is lower than the high-level detection point, the air path is switched, causing the adjustment cylinder 21 to open and the feeding port 71 to open, and feeding the distribution tank 7 through the feeding port 71. This process repeats in a cycle with automated control, improving work efficiency.

[0036] In the attached drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water solution height limit control device, applied to a sugar distribution tank, characterized in that: include A detection structure, the detection structure is used to detect the liquid level of the aqueous solution in the distribution tank; A liquid level regulating structure, the liquid level regulating structure comprises a regulating cylinder, a first solenoid valve and a second solenoid valve, the regulating cylinder is used to regulate the feeding amount of the distribution tank, a first regulating gas path and a second regulating gas path are formed between the valve opening port of the regulating cylinder and the first solenoid valve, the first regulating gas path is used to control the regulating cylinder to open the feeding port of the distribution tank, the second regulating gas path is used to control the regulating cylinder to close the feeding port, and an exhaust gas path is formed between the valve closing port of the regulating cylinder and the second solenoid valve, the exhaust gas path is used to discharge the stored gas in the regulating cylinder; and, A control structure, wherein the control structure is electrically connected to the detection structure and the liquid level regulating structure respectively, and the control structure controls the liquid level regulating structure to switch between the first regulating gas path and the second regulating gas path according to the liquid level of the aqueous solution detected by the detection structure, and controls the feeding port to open to replenish the aqueous solution or to close to stop replenishing the aqueous solution; Wherein, the first solenoid valve and the second solenoid valve are connected in parallel.

2. The water solution height limit control device according to claim 1, characterized in that: The liquid level adjustment structure also includes a valve positioner, which includes an air inlet end, a first air outlet end and a second air outlet end, wherein the first air outlet end is connected to the valve opening air port, and the second air outlet end is connected to the valve closing air port. The first solenoid valve of the control structure is connected to the air inlet end, and the second regulating air circuit is converted into the first regulating air circuit, and the opening of the regulating cylinder is adjusted by the valve positioner.

3. The water solution height limit control device according to claim 2, characterized in that: The control structure includes a main controller, a liquid level relay and an intermediate relay. The liquid level relay is electrically connected to the detection structure, and the intermediate relay is electrically connected to the first solenoid valve and the second solenoid valve. The intermediate relay controls the mutual conversion of the first regulating gas circuit and the second regulating gas circuit and the opening and closing of the exhaust gas circuit according to the liquid level of the distribution tank.

4. The water solution height limit control device according to claim 3, characterized in that: The detection structure includes a detection electrode and an auxiliary electrode. The detection electrode is arranged at a notch of the distribution groove and is arranged perpendicular to the notch. One end of the detection electrode is inserted into the distribution groove. The auxiliary electrode is arranged at a low position of the distribution groove. The detection electrode and the auxiliary electrode are electrically connected to the liquid level relay respectively.

5. The water solution height limit control device according to claim 4, characterized in that: The distribution slot is provided with an insulating bracket, and the insulating bracket is used to set up the detection electrode.

6. The water solution height limit control device according to claim 5, characterized in that: The insulating bracket includes a connecting portion and a clamping portion, the connecting portion and the clamping portion are arranged perpendicularly, the clamping portion and the notch are arranged parallelly, and the clamping portion is used to clamp the detection electrode.

7. The water solution height limit control device according to claim 1, characterized in that: A discharge pipe is provided at one side of the bottom of the distribution tank for conveying the aqueous solution to the next process. The discharge pipe is provided with a control valve for controlling the discharge rate.

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