A liquid storage tank quantitative filling and liquid level control device

Abstract

The application relates to a liquid storage tank quantitative filling and liquid level control device and relates to the filling technical field, which comprises a liquid storage tank body, a liquid adding assembly and a liquid level control assembly. The application realizes non-contact transmission through the magnetic connection between the permanent magnetic floating ball and the magnetic coupling slider in the liquid level control assembly, the polytetrafluoroethylene shell of the permanent magnetic floating ball resists medium corrosion, the engineering plastic shell of the magnetic coupling slider protects external components, the problems of easy jamming and corrosion of traditional contact transmission are effectively solved, the buffer cavity in the liquid adding assembly temporarily stores liquid, the flow slowing ball slows down the flow rate, the segmented control of the first electromagnetic valve and the second electromagnetic valve is matched, direct liquid injection into the liquid storage tank body is avoided, liquid level sudden change is avoided, liquid adding stability and liquid level detection accuracy are ensured, the neodymium iron boron magnetic beads and the reed switch accurately capture the liquid level change, the screw rod, the sleeve block and the knob are convenient for flexible adjustment of the detection position, the range and the pointer directly display the adjustment range, and the controller is used for overall planning of electrical elements.

Description

Technical Field

[0001] This application relates to the field of filling technology, and in particular to a quantitative filling and liquid level control device for a liquid storage tank. Background Technology

[0002] Traditional filling methods generally include atmospheric pressure gravity flow and piston metering. Atmospheric pressure gravity flow controls the filling volume by adjusting the liquid level difference and the opening time of the filling valve. This filling method is highly dependent on the liquid level and has difficulty controlling the metering accuracy. Piston metering controls the filling volume by adjusting the movement of the piston in the metering cylinder. This filling method has piston sealing rings that are prone to wear, are difficult to clean, have a complex structure, and require high processing standards.

[0003] An existing patent (publication number: CN204979886U) discloses a quantitative filling and liquid level control device for a liquid storage tank, including a sensing link, a liquid level float, and a liquid outlet solenoid valve. The sensing link is equipped with equally spaced sensing contacts, which can realize quantitative filling. The valve opening and closing is controlled by a liquid level sensor, making the measured filling amount more accurate. It includes a material level upper limit protection float and a material level lower limit protection float, which can control the liquid level and avoid losses caused by excessively high or low liquid levels. Moreover, the entire device has a simple structure, is easy to operate, and is suitable for use in assembly line production.

[0004] While the devices in the aforementioned comparative documents can achieve quantitative filling and liquid level control, the sensing linkage used in the patents is a contact-type transmission structure. It is directly linked to the liquid level float, and some components need to extend into the tank to contact the medium. If the medium is corrosive or has high viscosity, it can easily cause the linkage to jam and the components to corrode and be damaged. This not only affects the transmission stability but also increases the maintenance frequency. In addition, the liquid level detection components in the aforementioned devices, such as sensing contacts and liquid level sensors, are mostly fixed installations. When it is necessary to adjust the detection position or replace damaged components, many related structures need to be disassembled, which is cumbersome. In order to further optimize the control accuracy of the liquid level in the storage tank, a quantitative filling and liquid level control device for the storage tank is proposed. Utility Model Content

[0005] The purpose of this application is to provide a quantitative filling and liquid level control device for a liquid storage tank, which optimizes the control accuracy of the liquid level in the liquid storage tank and solves the problems mentioned in the background art.

[0006] The present application provides a liquid storage tank quantitative filling and liquid level control device, which adopts the following technical solution: A liquid storage tank quantitative filling and liquid level control device includes a liquid storage tank body, a liquid filling component, and a liquid level control component. The liquid level control component includes a guide rail fixedly connected to the inner wall of the liquid storage tank body. A permanent magnet float ball is sleeved on the inner wall of the guide rail. The permanent magnet float ball includes a polytetrafluoroethylene shell and a neodymium iron boron strong magnet A embedded in the inner wall of the polytetrafluoroethylene shell. An I-shaped slide rail is fixedly connected to the outer surface of the liquid storage tank body. A magnetically coupled slider is slidably sleeved on the inner wall of the I-shaped slide rail. The magnetically coupled slider includes an engineering plastic shell and a neodymium iron boron strong magnet B embedded in the engineering plastic shell. The permanent magnet float ball is magnetically connected to the magnetically coupled slider. An extension plate is fixedly connected to the outer surface of the magnetically coupled slider. Neodymium iron boron magnetic beads are fixedly connected to both sides of the outer surface of the extension plate.

[0007] Two sliding grooves are fixedly connected to the outer surface of the liquid storage tank body. A rotatable lead screw is installed on the inner wall of each sliding groove. A sleeve block is threadedly connected to the outer surface of each lead screw. A reed switch is fixedly connected to the outer surface of each sleeve block. The two reed switches correspond to two neodymium iron boron magnetic beads, respectively. Two measuring ranges are fixedly connected to the outer surface of the liquid storage tank body. A pointer is fixedly connected to the outer surface of each sleeve block. The pointer is adapted to the measuring range.

[0008] By adopting the above technical solutions, in the liquid level control component, the permanent magnet float and the magnetically coupled slider are connected by magnetism to achieve non-contact transmission. The polytetrafluoroethylene shell can resist media corrosion, and the engineering plastic shell prevents external components from being affected by the media. This effectively solves the problems of easy jamming and corrosion in traditional contact transmission. The neodymium iron boron magnetic bead and the reed switch work together to accurately capture changes in liquid level. The screw and the sleeve can flexibly adjust the detection position. The range and pointer make it easy to intuitively grasp the adjustment range, thus improving the adaptability and accuracy of liquid level control.

[0009] Preferably, the liquid filling assembly includes a liquid filling pipe, the output end of which is connected to a buffer chamber, the output end of which is connected to an inlet pipe, and the output end of the inlet pipe is connected to the interior of the liquid storage tank body.

[0010] By adopting the above technical solution, in the liquid filling assembly, the liquid filling pipe, buffer chamber and inlet pipe form a continuous liquid filling path. The buffer chamber can temporarily store liquid, reduce the impact fluctuation during liquid filling, avoid liquid directly rushing into the liquid storage tank body and causing sudden changes in liquid level, ensure the stability of liquid level detection, and make the liquid filling process more stable and orderly.

[0011] Preferably, a first solenoid valve is installed on the section of the liquid addition pipe, and a second solenoid valve is installed on the section of the liquid inlet pipe.

[0012] By adopting the above technical solution, the first solenoid valve can control the opening and closing of the liquid filling pipe, and the second solenoid valve can control the opening and closing of the liquid inlet pipe. The two work together to achieve segmented control of the liquid filling process, which can not only start the liquid replenishment in time when the liquid level is insufficient, but also quickly close it when the liquid level reaches the standard, thereby improving the accuracy and response speed of liquid filling control and avoiding overfilling or underfilling.

[0013] Preferably, a flow-slowing ball is fixedly connected to the inner wall of the buffer cavity.

[0014] By adopting the above technical solution, the slow-flow ball in the buffer chamber can block the incoming liquid, slow down the liquid flow rate, further weaken the impact force during liquid addition, avoid violent turbulence of the liquid in the buffer chamber, and allow the liquid to enter the storage tank body smoothly, reducing disturbance to the liquid level in the storage tank body and ensuring the accuracy of liquid level detection.

[0015] Preferably, the bottom of the liquid storage tank body is connected to an outlet pipe, and a third solenoid valve is installed on the pipe section of the outlet pipe.

[0016] By adopting the above technical solution, the liquid outlet pipe at the bottom of the liquid storage tank body can conveniently drain the liquid inside the liquid storage tank body, and the third solenoid valve can control the liquid outlet state of the liquid outlet pipe, making it convenient to use.

[0017] Preferably, the inner top wall and inner bottom wall of the liquid storage tank body are fixedly connected with limit blocks, the two limit blocks are respectively located at both ends of the guide rail, and both ends of the I-shaped slide rail are equipped with detachable limit baffles.

[0018] By adopting the above technical solution, the limiting block inside the liquid storage tank can limit the movement range of the permanent magnet float ball, preventing it from moving excessively due to excessively high or low liquid levels, and preventing the permanent magnet float ball from colliding and being damaged with the inner wall of the liquid storage tank. The limiting baffles at both ends of the I-shaped slide rail can limit the sliding stroke of the magnetically coupled slider, forming a corresponding protection with the limiting block, ensuring that the movement of the two is synchronized and safe, and extending the service life of the components.

[0019] Preferably, each of the grooves has two limiting rods installed on its inner wall, and the two sleeves are slidably sleeved on the outer surfaces of the four limiting rods, and each lead screw has a knob fixedly connected to its shaft end.

[0020] By adopting the above technical solution, the limiting rod in the slide can restrict the movement direction of the sleeve block, prevent it from shifting with the rotation of the lead screw, ensure the stability of the reed switch position adjustment, and the knob makes it easy to manually rotate the lead screw, making the reed switch position adjustment more convenient and labor-saving, which can be completed without professional tools, thus improving the ease of operation of the device.

[0021] Preferably, a controller is fixedly connected to the outer surface of the liquid storage tank body, and the electrical components inside the liquid adding component and the liquid level control component are all electrically connected to the controller. The bottom surface of the liquid storage tank body is fixedly connected with evenly distributed support columns.

[0022] By adopting the above technical solutions, the controller can coordinate the control of electrical components in the liquid filling component and the liquid level control component, thereby improving the coordination and efficiency of the device operation. The support column can stably support the liquid storage tank body and ensure the safety of the overall operation.

[0023] In summary, this application includes at least one of the following beneficial technical effects: This device for quantitative filling and level control of a liquid storage tank achieves non-contact transmission through the magnetic connection between a permanent magnet float and a magnetically coupled slider in the level control component. The permanent magnet float's PTFE shell resists media corrosion, and the magnetically coupled slider's engineering plastic shell protects external components, effectively solving the problems of jamming and corrosion inherent in traditional contact transmission methods. The liquid filling component includes a buffer chamber to temporarily store liquid and a flow-slowing ball to reduce flow rate. Combined with segmented control of the first and second solenoid valves, it prevents liquid from directly rushing into the storage tank body, thus avoiding sudden level changes and ensuring stable filling and accurate level detection. Neodymium iron boron beads and reed switches accurately capture level changes. The lead screw, sleeve, and knob facilitate flexible adjustment of the detection position. The range and pointer intuitively display the adjustment range. Furthermore, the controller coordinates the electrical components, comprehensively improving the device's adaptability, accuracy, and operational safety, surpassing the complex structure and low compatibility of existing technologies. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view structure of this application; Figure 2 This is a partial sectional planar structural diagram of this application; Figure 3 This is a partial side view of the structure of this application; Figure 4 This is a top view structural diagram of the first partial section of this application; Figure 5 This is a top view structural diagram of the second partial section of this application.

[0025] In the picture: 1. Storage tank body; 2. Liquid filling assembly; 201. Liquid filling pipe; 202. First solenoid valve; 203. Buffer chamber; 204. Flow-slowing ball; 205. Liquid inlet pipe; 206. Second solenoid valve; 207. Liquid outlet pipe; 208. Third solenoid valve; 3. Liquid level control assembly; 301. Guide rail; 302. Permanent magnet float; 3021. Neodymium iron boron strong magnet A; 3022. Polytetrafluoroethylene shell; 303. Limiting device 304. Block; 305. I-shaped slide rail; 306. Magnetic coupling slider; 307. Neodymium iron boron strong magnet B; 308. Engineering plastic shell; 309. Extension plate; 310. Neodymium iron boron magnetic bead; 310. Limiting baffle; 311. Slide groove; 312. Lead screw; 313. Sleeve block; 314. Reed switch; 315. Limiting rod; 316. Knob; 317. Measuring range; 318. Pointer; 4. Controller; 5. Support column. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0027] Example 1: A device for quantitative filling and level control of a liquid storage tank, referring to... Figure 1 , Figure 2 and Figure 4 The system includes a storage tank body 1, a liquid filling assembly 2, and a liquid level control assembly 3. The liquid level control assembly 3 includes a guide rail 301 fixedly connected to the inner wall of the storage tank body 1. A permanent magnet float 302 is sleeved on the inner wall of the guide rail 301. The permanent magnet float 302 includes a polytetrafluoroethylene shell 3022 and a neodymium iron boron strong magnet A3021 embedded in the inner wall of the polytetrafluoroethylene shell 3022. An I-shaped slide rail 304 is fixedly connected to the outer surface of the storage tank body 1. A magnetically coupled slider 305 is slidably sleeved on the inner wall of the I-shaped slide rail 304. The magnetically coupled slider 305 includes an engineering plastic shell 3052 and a neodymium iron boron strong magnet B3051 embedded in the engineering plastic shell 3052. The permanent magnet float 302 and the magnetically coupled slider 305 are magnetically connected. An extension plate 306 is fixedly connected to the surface. Neodymium iron boron magnetic beads 307 are fixedly connected to both sides of the outer surface of the extension plate 306. Limiting blocks 303 are fixedly connected to the inner top wall and inner bottom wall of the liquid storage tank body 1. The two limiting blocks 303 are located at both ends of the guide rail 301. Detachable limiting baffles 308 are installed at both ends of the I-shaped slide rail 304. The limiting blocks 303 in the liquid storage tank body 1 can limit the movement range of the permanent magnet float 302, prevent it from moving excessively due to excessively high or low liquid level, and prevent the permanent magnet float 302 from colliding and being damaged with the inner wall of the liquid storage tank body 1. The limiting baffles 308 at both ends of the I-shaped slide rail 304 can limit the sliding stroke of the magnetically coupled slider 305, forming a corresponding protection with the limiting blocks 303, ensuring that the movement of the two is synchronized and safe, and extending the service life of the components.

[0028] Reference Figure 3 , Figure 4 and Figure 5 The outer surface of the liquid storage tank body 1 is fixedly connected to two sliding grooves 309. Each sliding groove 309 has a rotatable lead screw 310 installed on its inner wall. Each lead screw 310 has a threaded sleeve 311 on its outer surface. Each sleeve 311 has a fixedly connected reed switch 312 on its outer surface. The two reed switches 312 correspond to two neodymium iron boron magnetic beads 307, respectively. The outer surface of the liquid storage tank body 1 is fixedly connected to two measuring ranges 315. Each sleeve 311 has a fixedly connected pointer 316 on its outer surface. The pointer 316 is adapted to the measuring range 315. Each sliding groove... Two limiting rods 313 are installed on the inner wall of each of the four limiting rods 313. Two sleeves 311 are slidably sleeved on the outer surface of the four limiting rods 313. A knob 314 is fixedly connected to the rotating shaft end of each lead screw 310. The limiting rods 313 in the slide groove 309 can limit the movement direction of the sleeves 311 and prevent them from shifting with the rotation of the lead screw 310, thus ensuring the stability of the position adjustment of the reed switch 312. The knob 314 makes it easy to manually rotate the lead screw 310, making the position adjustment of the reed switch 312 more convenient and labor-saving, which can be completed without professional tools, thus improving the ease of operation of the device.

[0029] Example 2: A device for quantitative filling and level control of a liquid storage tank, referring to... Figure 1 and Figure 2 Based on the same concept as Embodiment 1 above, this embodiment proposes a liquid filling assembly 2 including a liquid filling pipe 201. The output end of the liquid filling pipe 201 is connected to a buffer chamber 203, and the output end of the buffer chamber 203 is connected to an inlet pipe 205. The output end of the inlet pipe 205 is connected to the interior of the storage tank body 1. In the liquid filling assembly 2, the liquid filling pipe 201, the buffer chamber 203, and the inlet pipe 205 form a continuous liquid filling path. The buffer chamber 203 can temporarily store liquid, reduce the impact fluctuations during liquid filling, and prevent liquid from directly rushing into the storage tank body 1, causing a sudden change in liquid level, thus ensuring... To ensure the stability of liquid level detection and make the liquid addition process smoother and more orderly, a first solenoid valve 202 is installed on the liquid addition pipe 201, and a second solenoid valve 206 is installed on the liquid inlet pipe 205. The first solenoid valve 202 can control the opening and closing of the liquid addition pipe 201, and the second solenoid valve 206 can control the opening and closing of the liquid inlet pipe 205. The two work together to achieve segmented control of the liquid addition process, which can open the liquid addition in time when the liquid level is insufficient, and close it quickly when the liquid level reaches the target, thereby improving the accuracy and response speed of liquid addition control and avoiding over-addition or under-addition.

[0030] Reference Figure 1 and Figure 2A flow-slowing ball 204 is fixedly connected to the inner wall of the buffer chamber 203. The flow-slowing ball 204 in the buffer chamber 203 can block the incoming liquid, slow down the liquid flow rate, further weaken the impact force during liquid addition, and prevent the liquid from violently churning in the buffer chamber 203, so that the liquid can enter the storage tank body 1 smoothly, reduce the disturbance to the liquid level in the storage tank body 1, and ensure the accuracy of liquid level detection. The bottom of the storage tank body 1 is connected to an outlet pipe 207, and a third solenoid valve 208 is installed on the pipe section of the outlet pipe 207. The outlet pipe 207 at the bottom of the storage tank body 1 can... The liquid inside the storage tank body 1 is conveniently drained. The third solenoid valve 208 can control the liquid discharge status of the liquid outlet pipe 207 for easy use. The controller 4 is fixedly connected to the outer surface of the storage tank body 1. The electrical components inside the liquid filling component 2 and the liquid level control component 3 are all electrically connected to the controller 4. The bottom surface of the storage tank body 1 is fixedly connected with evenly distributed support columns 5. The controller 4 can coordinate and control the electrical components inside the liquid filling component 2 and the liquid level control component 3, improving the coordination and efficiency of the device operation. The support columns 5 can stably support the storage tank body 1 and ensure the safety of the overall operation.

[0031] The implementation principle of this application embodiment is as follows: the change in liquid level in the liquid storage tank body 1 will cause the permanent magnet float 302 sleeved on the guide rail 301 to move up and down synchronously. Because the neodymium iron boron strong magnet A3021 in the permanent magnet float 302 is magnetically connected to the neodymium iron boron strong magnet B3051 in the magnetic coupling slider 305 on the I-shaped slide rail 304 outside the liquid storage tank body 1, the magnetic coupling slider 305 will slide synchronously with the permanent magnet float 302 along the I-shaped slide rail 304, thereby driving the magnetic coupling The extension plate 306 and neodymium iron boron magnetic beads 307 outside the slider 305 move. When one side of the neodymium iron boron magnetic beads 307 moves to the position corresponding to the reed switch 312 on the inner sleeve block 311 of the slide groove 309, the reed switch 312 will transmit a signal to the controller 4. If the liquid level in the liquid storage tank body 1 is too low at this time, the controller 4 will control the first solenoid valve 202 and the second solenoid valve 206 in the liquid filling assembly 2 to open, and the external liquid enters the buffer chamber 203 through the liquid filling pipe 201. After the slow-flow ball 204 in the buffer chamber 203 slows down the liquid flow rate, the liquid then flows smoothly into the storage tank body 1 through the inlet pipe 205. When the liquid level rises to the preset height, the neodymium iron boron magnetic bead 307 on the other side corresponds to the reed switch 312 above. The controller 4 closes the first solenoid valve 202 and the second solenoid valve 206 to stop adding liquid. When quantitative filling is required, the controller 4 will open the third solenoid valve 208 on the outlet pipe 207. The liquid in the storage tank body 1 is discharged through the outlet pipe 207 to complete the filling. After the filling is completed, the controller 4 closes the third solenoid valve 208. If it is necessary to adjust the liquid level detection range, the knob 314 can be turned to drive the lead screw 310 to rotate, so that the sleeve block 311 slides along the limit rod 313 to adjust the position of the reed switch 312. At the same time, the pointer 316 will move synchronously along the range 315 to facilitate observation of the adjustment range. The limit block 303 and the limit baffle 308 will respectively limit the movement limits of the permanent magnet float ball 302 and the magnetic coupling slider 305.

Claims

1. A liquid storage tank quantitative filling and liquid level control device, comprising a liquid storage tank body (1), a liquid filling assembly (2), and a liquid level control assembly (3), characterized in that: The liquid level control component (3) includes a guide rail (301) fixedly connected to the inner wall of the liquid storage tank body (1). A permanent magnet float (302) is sleeved on the inner wall of the guide rail (301). The permanent magnet float (302) includes a polytetrafluoroethylene shell (3022) and a neodymium iron boron strong magnet A (3021) embedded in the inner wall of the polytetrafluoroethylene shell (3022). An I-shaped slide rail (304) is fixedly connected to the outer surface of the liquid storage tank body (1). The inner surface of the I-shaped slide rail (304) is... The wall-mounted sliding sleeve is equipped with a magnetically coupled slider (305). The interior of the magnetically coupled slider (305) includes an engineering plastic shell (3052) and a neodymium iron boron strong magnet B (3051) embedded inside the engineering plastic shell (3052). The permanent magnet float (302) is magnetically connected to the magnetically coupled slider (305). An extension plate (306) is fixedly connected to the outer surface of the magnetically coupled slider (305). Neodymium iron boron magnetic beads (307) are fixedly connected to both sides of the outer surface of the extension plate (306). The outer surface of the liquid storage tank body (1) is fixedly connected to two slide grooves (309). Each slide groove (309) has a rotatable lead screw (310) installed on its inner wall. Each lead screw (310) has a sleeve block (311) threadedly connected to its outer surface. Each sleeve block (311) has a reed switch (312) fixedly connected to its outer surface. The two reed switches (312) correspond to two neodymium iron boron magnetic beads (307) respectively. The outer surface of the liquid storage tank body (1) is fixedly connected to two measuring ranges (315). Each sleeve block (311) has a pointer (316) fixedly connected to its outer surface. The pointer (316) is adapted to the measuring range (315).

2. The liquid storage tank quantitative filling and liquid level control device according to claim 1, characterized in that: The liquid filling assembly (2) includes a liquid filling pipe (201), the output end of which is connected to a buffer chamber (203), the output end of which is connected to an inlet pipe (205), and the output end of which is connected to the interior of the liquid storage tank body (1).

3. The liquid storage tank quantitative filling and liquid level control device according to claim 2, characterized in that: A first solenoid valve (202) is installed on the section of the liquid addition pipe (201), and a second solenoid valve (206) is installed on the section of the liquid inlet pipe (205).

4. The liquid storage tank quantitative filling and liquid level control device according to claim 2, characterized in that: The inner wall of the buffer cavity (203) is fixedly connected to a flow-slowing ball (204).

5. The liquid storage tank quantitative filling and liquid level control device according to claim 1, characterized in that: The bottom of the liquid storage tank body (1) is connected to an outlet pipe (207), and a third solenoid valve (208) is installed on the pipe section of the outlet pipe (207).

6. The liquid storage tank quantitative filling and liquid level control device according to claim 1, characterized in that: The inner top wall and inner bottom wall of the liquid storage tank body (1) are fixedly connected to limit blocks (303). The two limit blocks (303) are located at both ends of the guide rail (301). Both ends of the I-shaped slide rail (304) are equipped with detachable limit baffles (308).

7. The liquid storage tank quantitative filling and liquid level control device according to claim 1, characterized in that: Two limiting rods (313) are installed on the inner wall of each of the slide grooves (309), and two sleeve blocks (311) are slidably sleeved on the outer surface of the four limiting rods (313). A knob (314) is fixedly connected to the rotating shaft end of each of the lead screws (310).

8. The liquid storage tank quantitative filling and liquid level control device according to claim 1, characterized in that: The outer surface of the liquid storage tank body (1) is fixedly connected to the controller (4), and the electrical components inside the liquid addition component (2) and the liquid level control component (3) are all electrically connected to the controller (4). The bottom surface of the liquid storage tank body (1) is fixedly connected to evenly distributed support columns (5).

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