Self-locking device for controlling liquid level of solution storage tank

Abstract

The utility model discloses a self-locking device for controlling the liquid level of a solution storage tank, and relates to the technical field of liquid storage and control equipment. Comprising a liquid storage tank, a liquid level synchronous control assembly arranged on the outer side of the liquid storage tank and used for controlling the height of the liquid level in the liquid storage tank, and an auxiliary flow blocking assembly arranged on the inner wall of the liquid storage tank and used for conducting secondary locking operation on the liquid storage tank. The liquid level in the liquid storage tank can be synchronized in real time without electric power by utilizing the communicating vessel formed by the intercommunicating pipeline, the fixed barrel and the liquid storage tank, the problem of false alarm caused by circuit faults of an electronic sensor is avoided, the reliability of the device is improved, automatic liquid level control is realized by utilizing the control valve and the liquid level switch, preliminary locking is formed, and the safety of the device is improved. The device is simple in structure and high in response speed, secondary locking is formed on a solution in the liquid storage tank under the matching action of the spoiler and the limiting sleeve, circulation of the solution can be forcibly blocked under the extreme conditions of power interruption and a control system fault lamp, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid storage and control equipment technology, specifically a self-locking device for controlling the liquid level of a solution storage tank. Background Technology

[0002] In the industrial production fields of chemical, pharmaceutical, and food industries, solution storage tanks are core equipment for solution storage and transfer, and their precise level control is directly related to the stability and safety of the production process.

[0003] In the existing technology, liquid level control mainly relies on a combination of sensors and valves. However, when the sensor or valve fails, it is impossible to forcibly stop the flow of solution in extreme situations (such as power outage or control system failure), which may cause solution overflow, resulting in waste and pollution. Therefore, a self-locking device for controlling the liquid level of the solution storage tank is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a self-locking device for controlling the liquid level in a solution storage tank, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-locking device for controlling the liquid level of a solution storage tank, comprising: a storage tank,

[0006] A liquid level synchronization control component is installed on the outside of the storage tank to control the liquid level inside the storage tank.

[0007] An auxiliary flow-blocking component is installed on the inner wall of the liquid storage tank to perform a secondary locking operation on the liquid storage tank.

[0008] The liquid level synchronization control component includes an interconnecting pipe located at the bottom of the storage tank. A fixed bucket is installed at the other end of the interconnecting pipe. A support frame is installed on the inner wall of the fixed bucket, and a fixing plate is installed on the top inner wall of the fixed bucket.

[0009] Preferably, a liquid level switch is provided on the inner side of the fixing plate, the liquid level switch is located inside the fixing tank, and a fixing rod is provided on the outer wall of the top of the fixing tank.

[0010] Preferably, the liquid storage tank is provided with an inlet pipe and an outlet pipe at its upper and lower ends, respectively, and a control valve is provided on both the inlet pipe and the outlet pipe.

[0011] Preferably, the auxiliary flow-blocking component includes a vertical rod, which is disposed on the inner wall of the liquid storage tank, and push plates are provided at the upper and lower ends of the inner wall of the vertical rod.

[0012] Preferably, a guide rod is provided at the other end of the push plate, and a baffle plate is provided at one end of the guide rod. The baffle plate is located inside the limiting sleeve, and the limiting sleeve is located at the upper and lower ends of the inner wall of the liquid storage tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This self-locking device for controlling the liquid level in the solution storage tank utilizes an interconnecting pipe formed by the fixed bucket and the storage tank. It can synchronize the liquid level in the storage tank in real time without electricity, avoiding false alarms caused by circuit failures in electronic sensors and improving the reliability of the device. Secondly, it achieves automated liquid level control using a control valve and a liquid level switch, forming a preliminary lock with a fast response. Furthermore, with the cooperation of the flow baffle and the limiting sleeve, a secondary lock is formed on the solution in the storage tank. This can forcibly block the flow of solution in extreme cases such as power outages or control system malfunctions, improving the practicality of the device. The threaded connection between the fixed plate and the fixed bucket facilitates the replacement of the liquid level switch, and the support frame ensures that the liquid level switch is vertically positioned inside the fixed bucket, improving the accuracy of the liquid level switch in detecting high and low liquid levels. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial cross-sectional schematic diagram of the present invention;

[0017] Figure 3 This is a cross-sectional schematic diagram of the fixed bucket of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the liquid storage tank of this utility model.

[0019] In the diagram: 1. Storage tank; 2. Level synchronization control component; 201. Outlet pipe; 202. Fixed tank; 203. Control valve; 204. Inlet pipe; 205. Interconnecting pipe; 206. Fixed rod; 207. Fixed plate; 208. Support frame; 209. Level switch; 3. Auxiliary flow obstruction component; 301. Limit sleeve; 302. Flow obstruction plate; 303. Guide rod; 304. Vertical rod; 305. Push plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only for descriptive distinction and should not be construed as indicating or implying relative importance. All electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventionally known device such as a computer that provides control.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a self-locking device for controlling the liquid level of a solution storage tank, including a storage tank 1, the storage tank 1 being made of a high-strength corrosion-resistant material (such as 316 stainless steel), a bracket being installed at the bottom of the storage tank 1 for auxiliary support, a liquid level synchronization control component 2 being installed on the outside of the storage tank 1 for controlling the liquid level height inside the storage tank 1, and an auxiliary flow-blocking component 3 being installed on the inner wall of the storage tank 1 for secondary locking of the storage tank 1.

[0024] like Figure 1-4As shown in the embodiment of this application, the liquid level synchronization control component 2 includes an interconnecting pipe 205, which is located at the bottom of the storage tank 1. A fixed bucket 202 is provided at the other end of the interconnecting pipe 205. A support frame 208 is provided on the inner wall of the fixed bucket 202, and a fixing plate 207 is provided on the top inner wall of the fixed bucket 202. Specifically, the interconnecting pipe 205 is fixedly installed at the bottom of the storage tank 1, and the fixed bucket 202 is fixedly connected to the other end of the interconnecting pipe 205. Thus, a communicating vessel is formed between the storage tank 1, the interconnecting pipe 205, and the fixed bucket 202. According to the principle of the communicating vessel, when liquid injection is performed in the storage tank 1, due to the interconnecting pipe 205, the liquid level synchronization control component 2... With the pipe 205 in place, the liquid level in the fixed tank 202 rises synchronously, and the upper and lower ends of the inner wall of the fixed tank 202 are at the same level as the upper and lower ends of the inner wall of the storage tank 1. The fixed tank 202 is made of a transparent and corrosion-resistant material (such as polyethylene), and there are scale lines on the fixed tank 202. The staff can judge the height of the liquid in the storage tank 1 according to the scale line corresponding to the liquid in the fixed tank 202, which makes it convenient for the staff to visually observe the height of the liquid in the storage tank 1. The inner wall of the top of the fixed tank 202 is provided with a threaded groove, and the fixed plate 207 is threadedly connected to the fixed tank 202.

[0025] like Figure 1-4 As shown in the embodiment of this application, a liquid level switch 209 is provided inside the fixing plate 207. The liquid level switch 209 is located inside the fixing tank 202. A fixing rod 206 is provided on the top outer wall of the fixing tank 202. Specifically, the fixing plate 207 and the liquid level switch 209 are fixedly connected. Under the action of the threaded connection between the fixing plate 207 and the fixing tank 202, it is easy to assemble the liquid level switch 209. A support frame 208 is fixedly provided on the inner wall of the fixing tank 202. The support frame 208 is composed of a ring and a support rod. The inner wall of the ring is adapted to the metal guide rod 303 of the liquid level switch 209. When installing the liquid level switch 209, the setting of the support frame 208 can ensure that the liquid level switch 209 is vertically installed inside the fixing tank 202.

[0026] like Figure 1-4As shown in the embodiment of this application, the upper and lower ends of the storage tank 1 are respectively provided with an inlet pipe 204 and an outlet pipe 201. Both the inlet pipe 204 and the outlet pipe 201 are equipped with control valves 203. Specifically, the control valves 203 are controlled by the control system. When the storage tank 1 is being filled with liquid, the control valve 203 at the outlet pipe 201 is closed, and the control valve 203 at the inlet pipe 204 is open. When the liquid level in the storage tank 1 rises due to the solution injection, the liquid level in the fixed tank 202 rises synchronously under the action of the interconnecting pipe 205. When the liquid level switch 209 detects that the liquid level has reached the high liquid level mark, it sends an electrical signal to the control system. After receiving the signal, the control system immediately closes the inlet pipe 204. Control valve 203 stops solution injection to prevent solution overflow. When draining the storage tank 1, the control system controls the control valve 203 at the outlet pipe 201 to be in the open / closed state and the control valve 203 at the inlet pipe to be in the closed state. When the solution level in the storage tank 1 drops due to excessive drainage, the solution level in the fixed tank 202 drops synchronously under the action of the interconnection pipe 205. When the liquid level switch 209 detects that the liquid level has reached the low liquid level mark, it sends an electrical signal to the control system again. After receiving the signal, the control system closes the control valve 203 at the outlet pipe 201 and opens the control valve 203 at the inlet pipe 204 to replenish the storage tank 1, preventing the downstream equipment (such as pumps) from burning out due to the liquid level in the storage tank 1 being too low for a long time.

[0027] like Figure 1-4As shown in the embodiment of this application, the auxiliary flow-blocking component 3 includes a vertical rod 304, which is disposed on the inner wall of the liquid storage tank 1. Push plates 305 are disposed at both the upper and lower ends of the inner wall of the vertical rod 304. A guide rod 303 is disposed at the other end of the push plate 305. A flow-blocking plate 302 is disposed at one end of the guide rod 303. The flow-blocking plate 302 is located inside the limiting sleeve 301. The limiting sleeve 301 is located at both the upper and lower ends of the inner wall of the liquid storage tank 1. Specifically, the vertical rod 304 is fixed to the inner wall of the liquid storage tank 1 and is located at the inlet pipe 204 and outlet pipe 201. The limiting sleeves 301 at both the upper and lower ends of the inner wall of the liquid storage tank 1 correspond to the inlet pipe 204 and outlet pipe 201, respectively. The upper limiting sleeve... The sleeve 301 has perforations to reduce obstruction when the solution enters the storage tank 1. The baffle plate 302 is arc-shaped and floats in the solution. It is compatible with the limiting sleeve 301. When the baffle plate 302 is inserted into the limiting sleeve 301, it can seal the inlet, thereby blocking the flow of the solution. The upright 304 is blocked in the middle and has internal holes at both ends. Therefore, the baffle plates 302 at the upper and lower ends of the upright 304 operate independently and do not interfere with each other. When the liquid level is at the high liquid level mark, the control system will close the control valve 203 at the inlet pipe 204. If the control valve 203 fails to close completely due to a malfunction... (If the valve disc is stuck), then the function of the baffle plate 302 becomes apparent. During the rise of the liquid level, the solution lifts the baffle plate 302. As the baffle plate 302 rises, the guide rod 303 drives the push plate 305 to slide along the inner wall of the upright rod 304. The cooperation between the guide rod 303 and the push plate 305 guides the baffle plate 302, preventing it from deviating during its ascent and failing to accurately enter the limiting sleeve 301. It also controls the rising distance, causing the guide rod 303 to detach from the upright rod 304, thus allowing the baffle plate 302 to float in the storage tank 1. The baffle plate 302 gradually rises with the solution level. As the liquid level rises, it will eventually insert into the limiting sleeve 301 on the inner wall of the storage tank 1, forming a mechanical lock on the liquid level in the storage tank 1 and physically blocking the connection path between the water inlet pipe 204 and the storage tank 1. This ensures that even if the control valve 203 fails, the solution cannot continue to flow in. In the high liquid level state, the upper baffle plate 302 will be inserted into the limiting sleeve 301, while the lower baffle plate 302 will be pressed against the bottom of the upright 304. When the solution in the storage tank 1 is drained, as the liquid level drops, the baffle plate 302 will gradually disengage from the limiting sleeve 301, thereby restoring the water inlet pipe 204 and the storage tank 1 to a normal flow state, which facilitates the replenishment of the solution in the tank.When the solution in storage tank 1 is drained, if the valve fails to close, a flow-blocking plate 302 can be used to physically obstruct the flow. The lower limiting sleeve 301 has a perforation only at its top portion, which overlaps with the arc-shaped part of the flow-blocking plate 302. This ensures that after the flow-blocking plate 302 contacts the limiting sleeve 301, a seal is formed at the contact point. When the liquid level drops to the low level mark, the lower flow-blocking plate 302 will descend under the influence of the solution level and make contact with the limiting sleeve 301 for the first time. If the valve on the outlet pipe 201 fails to close at this time... If the flow obstruction plate 302 continues to move downwards until it fully contacts the perforated portion of the limiting sleeve 301, it will block the solution from draining further. While the flow obstructs the flow of the remaining solution, the operator can replace or repair the control valve 203. After repair or replacement, the control valve 203 at the outlet pipe 201 is closed, and liquid is injected into the inlet pipe 204 to prevent the storage tank from drying out and damaging subsequent equipment due to a prolonged low liquid level. As the solution is injected, the lower flow obstruction plate 302 will rise until it returns to its original position.

[0028] The working principle of this utility model is as follows:

[0029] During the liquid filling operation in storage tank 1, initially, all control valves 203 are closed. Subsequently, the control system opens the control valve 203 at the outlet pipe 201, allowing the solution to enter storage tank 1. As the liquid level rises, the liquid level in storage tank 1 is simultaneously displayed in the fixed container 202 under the action of the interconnecting pipe 205. As the liquid level gradually rises, the baffle plate 302 above the upright 304 also floats upward. When the liquid level in storage tank 1 rises to the high liquid level mark, the liquid level switch 209 sends an electrical signal to the control system, which then controls the liquid level to rise. The control valve 203 at the inlet pipe 204 is closed, and at the same time, the upper baffle plate 302, as the liquid level rises, inserts into the limiting sleeve 301, forming a mechanical seal with the limiting sleeve 301. Thus, under the combined action of the control valve 203 and the baffle plate 302, a double blockage is formed on the outlet pipe 201 to prevent the solution in the storage tank 1 from overflowing. When the storage tank 1 is drained, the liquid level in the storage tank 1 will drop, and subsequently, the upper baffle plate 302 will gradually return to its original position, releasing the mechanical blockage on the inlet pipe 204, and the liquid level will decrease. During the process, the lower baffle plate 302 will move downwards. When the liquid level in the storage tank 1 reaches the low level mark, the level switch 209 sends an electrical signal to the control system. The control system will then close the control valve 203 at the outlet pipe 201 and open the control valve 203 at the inlet pipe 204 to replenish the liquid. If the control valve 203 at the outlet pipe 201 malfunctions and cannot close properly, the control system will temporarily not open the control valve 203 at the inlet pipe 204, and the liquid level in the storage tank 1 will continue to drop until... The lower baffle plate 302 and the perforated part of the lower limiting sleeve 301 completely overlap to intercept the solution in the storage tank 1, thereby controlling the continuous discharge of the solution in the storage tank 1 and preventing all the solution in the storage tank 1 from being discharged. The staff can use the effect of the baffle plate 302 to intercept the solution to repair or replace the control valve 203 at the outlet pipe 201. After the control valve 203 is restored to normal, the control valve 203 at the outlet pipe 201 is closed and the control valve 203 at the inlet pipe 204 is opened to continue the liquid replenishment operation.

[0030] In summary, this utility model discloses a self-locking device for controlling the liquid level of a solution storage tank, including a storage tank 1, a liquid level synchronization control component 2, which is disposed on the outside of the storage tank 1 and is used to control the liquid level height inside the storage tank 1, and an auxiliary flow-blocking component 3, which is disposed on the inner wall of the storage tank 1 and is used to perform a secondary locking operation on the storage tank 1. This invention utilizes the interconnecting pipe 205, the fixed bucket 202, and the storage tank 1 to form a communicating vessel, enabling real-time synchronization of the liquid level in the storage tank 1 without the need for electricity. This avoids false alarms caused by circuit failures in electronic sensors, improving the reliability of the device. Secondly, the control valve 203 and the level switch 209 achieve automated liquid level control, forming a preliminary lock with a fast response speed. With the cooperation of the flow baffle 302 and the limiting sleeve 301, a secondary lock is formed on the solution in the storage tank 1, which can forcibly block the flow of the solution in extreme cases such as power outages or control system failures, improving the practicality of the device. Furthermore, the threaded connection between the fixed plate 207 and the fixed bucket 202 facilitates the replacement of the level switch 209. Due to the support frame 208, the level switch 209 is ensured to be vertically positioned inside the fixed bucket 202, improving the accuracy of the level switch 209 in detecting high and low liquid levels.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A self-locking device for controlling the liquid level of a solution storage tank, comprising: The liquid storage tank is characterized by: A liquid level synchronization control component is installed on the outside of the storage tank to control the liquid level inside the storage tank. An auxiliary flow-blocking component is installed on the inner wall of the liquid storage tank to perform a secondary locking operation on the liquid storage tank. The liquid level synchronization control component includes an interconnecting pipe located at the bottom of the storage tank. A fixed bucket is installed at the other end of the interconnecting pipe. A support frame is installed on the inner wall of the fixed bucket, and a fixing plate is installed on the top inner wall of the fixed bucket.

2. The self-locking device for controlling the liquid level of a solution storage tank according to claim 1, characterized in that: A liquid level switch is provided on the inner side of the fixed plate. The liquid level switch is located inside the fixed barrel. A fixing rod is provided on the outer wall of the top of the fixed barrel.

3. The self-locking device for controlling the liquid level of a solution storage tank according to claim 1, characterized in that: The storage tank is equipped with an inlet pipe and an outlet pipe at its upper and lower ends, respectively, and both the inlet pipe and the outlet pipe are equipped with control valves.

4. The self-locking device for controlling the liquid level of a solution storage tank according to claim 1, characterized in that: The auxiliary flow-blocking component includes a vertical rod, which is installed on the inner wall of the liquid storage tank, and push plates are provided at the upper and lower ends of the inner wall of the vertical rod.

5. The self-locking device for controlling the liquid level of a solution storage tank according to claim 4, characterized in that: The other end of the push plate is provided with a guide rod, and one end of the guide rod is provided with a flow-blocking plate. The flow-blocking plate is located inside the limiting sleeve, and the limiting sleeve is located at the upper and lower ends of the inner wall of the liquid storage tank.

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