Distribution device and method for chemical conveying
By combining the distribution device with a PLC controller and an electromagnetic adjustment mechanism, high-precision flow regulation and liquid level monitoring are achieved during the chemical transportation process. This solves the problems of inaccurate flow regulation and environmental pollution in existing technologies, and realizes stable and efficient chemical distribution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-02
- Publication Date
- 2026-04-14
AI Technical Summary
Existing chemical conveying and distribution devices suffer from insufficient flow regulation accuracy, inability to control flow precisely in real time, and lack of dual monitoring of liquid level and flow rate, leading to unstable production and environmental pollution.
The system combines a distribution mechanism with a regulation mechanism and a PLC controller. The flow rate is adjusted by a sliding rheostat and an electromagnetic telescopic rod. Dual monitoring is achieved by combining a liquid level detection rod and a current detector. An electromagnet controls the sliding of the outlet head to discharge excess fluid.
It achieves high-precision flow regulation, has dual monitoring of liquid level and flow, avoids production instability and environmental pollution, and realizes efficient and environmentally friendly chemical distribution.
Smart Images
Figure CN121854764A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of chemical conveying and dispensing technology, and specifically to a chemical conveying and dispensing device and method. Background Technology
[0002] In chemical production processes, the precise delivery and distribution of chemicals are crucial for ensuring production efficiency and product quality. In existing technologies, chemicals are typically pressurized by a delivery pump and then distributed to multiple pipelines via a distribution device to meet the needs of simultaneous multi-station operations. To adapt to different operating conditions, the flow rate of each pipeline needs to be adjusted in real time, and abnormal flow rates need to be monitored and corrected. Simultaneously, issues such as the corrosiveness of the chemicals, the stability of the delivery pressure, and resource recovery must be considered.
[0003] Existing distribution devices generally suffer from insufficient flow regulation accuracy: traditional mechanical regulation structures have a sluggish response and are difficult to accurately regulate based on real-time flow changes; moreover, they lack a dual monitoring mechanism for liquid level and flow in the pipeline. When an abnormal flow occurs in a pipeline (such as excessive fluid), excess chemicals cannot be discharged in time to meet distribution requirements, which not only affects production stability but may also cause environmental pollution due to chemical waste or leakage. Summary of the Invention
[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a chemical delivery and distribution device and method.
[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a chemical delivery and distribution device and method, comprising: A delivery pump, the output end of which is fixedly connected to a flow divider box, and the other end of the flow divider box is fixedly connected to multiple delivery pipes; The distribution mechanism includes a detection box fixedly connected to the top wall of a shunt box, a resistance plate fixedly connected to the inner top wall of the detection box, a first permanent magnet block slidably connected to the inner wall of the detection box, a sliding groove opened at the bottom of the detection box, a second permanent magnet block slidably connected to the inner wall of the sliding groove, the first permanent magnet block and the second permanent magnet block being magnetically attracted, a conductive sheet fixedly connected to the top of the first permanent magnet block, the conductive sheet slidingly contacting the bottom of the resistance plate, the conductive sheet and the resistance plate forming a sliding rheostat, and the sliding rheostat being electrically connected to a PLC controller. The regulating mechanism includes outlets opened on the inner wall of each conveying pipe. A sealing ring is fixedly connected inside the outlet. An outlet head is slidably connected to the inner wall of the sealing ring in an airtight manner. The outlet head is shaped like an inverted frustum. An inlet is opened at the top of the outlet head. Multiple outlets are opened on the outer peripheral wall of the outlet head. The inlet and the multiple outlets are connected.
[0006] Preferably, the distribution mechanism further includes a barrier plate fixedly connected to the bottom end of the second permanent magnet block, and a detection spring is fixedly connected between the barrier plate and the inner wall of the diversion box.
[0007] Preferably, the adjusting mechanism includes a first filter plate fixedly connected to the inlet of the delivery pipe, a movable shell fixedly connected to the top of the diversion box, a movable groove formed between the movable shell and the diversion box, a plurality of electromagnetic telescopic rods fixedly connected to the inner top wall of the movable shell, a second filter plate fixedly connected to the telescopic end of the electromagnetic telescopic rod, the outer walls of the first filter plate and the second filter plate slidingly contacting each other, and the PLC controller electrically connected to the electromagnetic telescopic rods to form a first control loop.
[0008] Preferably, a fixed cylinder is fixedly connected to the inner wall of the conveying pipe, an electromagnet is fixedly connected to the inner top wall of the fixed cylinder, a plastic spring is fixedly connected to the bottom end of the electromagnet, a permanent magnet plate is fixedly connected to the other end of the plastic spring, a connector is fixedly connected to the bottom end of the permanent magnet plate, a push rod is fixedly connected to the bottom end of the connector, the bottom end of the push rod is fixedly connected to the top end of the spray head, and the PLC controller is electrically connected to the electromagnet to form a second control loop.
[0009] Preferably, each of the conveying pipes has a rotating rod rotatably connected to its inner wall, and a water wheel is fixedly connected to the outer wall of the rotating rod.
[0010] Preferably, one end of the rotating rod is airtightly rotatably inserted through the conveying pipe, and a detection shell is fixedly connected to the outer wall of the conveying pipe. An N-class magnet and an S-class magnet are fixedly connected to the inner wall of the detection shell and the outer wall of the conveying pipe, respectively, and the N-class magnet and the S-class magnet are parallel to each other.
[0011] Preferably, a copper rod is fixedly connected to the outer wall of the rotating rod inside the detection housing. The copper rod is used to cut the magnetic field lines between the N-class magnet and the S-class magnet. The copper rod is electrically connected to a current detector. The current detector is electrically connected to the PLC controller and forms a first detection circuit.
[0012] Preferably, a liquid level detection rod is fixedly connected to the inner wall of the delivery pipe, and the liquid level detection rod is electrically connected to the PLC controller to form a second detection circuit.
[0013] Preferably, a chemical delivery and dispensing method includes the following steps: S1. Start the delivery pump to deliver the chemicals through the distribution box to each delivery pipe; S2. The distribution mechanism inside the shunt box works, and the flow of chemicals pushes the second permanent magnet block and the baffle plate to move, which in turn drives the first permanent magnet block and the conductive sheet to slide on the resistor plate. The resulting sliding rheostat transmits the flow signal to the PLC controller. S3, the PLC controller controls the electromagnetic telescopic rod of the corresponding conveying pipe in the regulating mechanism to move according to the received signal, and initially adjusts the flow rate by adjusting the overlap of the first filter plate and the second filter plate. S4. At the same time, the PLC controller controls the change of the magnetic force of the electromagnet, which drives the water outlet to slide inside the sealing ring through the plastic spring, permanent magnet plate and push rod, thereby changing the opening size of the drain outlet and precisely adjusting the flow rate. S5. The water wheel in the conveying pipe rotates with the flow of chemicals, driving the rotating rod and copper rod to cut the magnetic field lines between the N-level magnet and the S-level magnet. The generated current is fed back to the PLC controller by the current detector to monitor the flow rate in real time. S6, the liquid level detection rod transmits the liquid level information in the delivery pipe to the PLC controller, which, together with the flow monitoring information, enables dynamic control of chemical distribution; S7. When it is necessary to stop the distribution, turn off the delivery pump, reset all regulating mechanisms, and complete the chemical delivery and distribution process.
[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: This device boasts higher flow regulation accuracy, enabling real-time precise control. This is achieved by converting flow changes into electrical signals through a distribution mechanism, which are then transmitted to the PLC controller. In the regulation mechanism, an electromagnetic telescopic rod drives the filter plate to change the flow area, achieving initial adjustment. Simultaneously, the PLC controls an electromagnet to slide the outlet head based on real-time flow and liquid level signals, precisely regulating the drainage volume and solving the problem of lag in traditional mechanical regulation.
[0015] This device features dual monitoring of liquid level and flow rate, as well as an excess chemical recovery mechanism, making it more environmentally friendly and stable. Flow rate is detected by cutting magnetic lines of force with a copper rod, and liquid level is monitored by a liquid level detection rod. These dual signals are fed back to the PLC. When there is excessive fluid, the outlet head slides to discharge excess chemicals to the recovery tank, avoiding production instability, environmental pollution, and resource waste caused by abnormal flow rates. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 1 ; Figure 3This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 2 ; Figure 4 This is a three-dimensional cross-sectional structural diagram of the delivery pipe of the present invention; Figure 5 This is a three-dimensional cross-sectional structural diagram of the detection shell of the present invention; Figure 6 For the present invention Figure 2 Enlarged view of section A in the middle.
[0018] Reference numerals: 1. Transfer pump; 2. Diverter box; 3. Transfer pipe; 4. Distribution mechanism; 41. Detection box; 42. Resistance plate; 43. First permanent magnet; 44. Slide groove; 45. Second permanent magnet; 46. Conductive sheet; 47. Barrier plate; 48. Detection spring; 5. Adjustment mechanism; 51. Outlet; 52. Sealing ring; 53. Outlet head; 54. Drain outlet; 55. First filter plate; 56. Moving shell; 57. Moving groove; 58. Electromagnetic telescopic rod; 59. Second filter plate; 510. Fixed cylinder; 511. Electromagnet; 512. Plastic spring; 513. Permanent magnet plate; 514. Connector; 515. Push rod; 516. Rotating rod; 517. Water wheel; 518. Detection shell; 519. N-class magnet; 520. S-class magnet; 521. Copper rod; 522. Liquid level detection rod. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0020] The present invention will be further described below with reference to embodiments.
[0021] Example: Refer to Figures 1 to 6 A chemical delivery and distribution device and method, comprising: A delivery pump 1 is fixedly connected to a flow divider box 2 at its output end, and multiple delivery pipes 3 are fixedly connected to the other end of the flow divider box 2. The distribution mechanism 4 includes a detection box 41 fixedly connected to the top wall of the shunt box 2, a resistance plate 42 fixedly connected to the top wall of the detection box 41, a first permanent magnet block 43 slidably connected to the inner wall of the detection box 41, a sliding groove 44 opened at the bottom of the detection box 41, a second permanent magnet block 45 slidably connected to the inner wall of the sliding groove 44, the first permanent magnet block 43 and the second permanent magnet block 45 are magnetically attracted, a conductive sheet 46 fixedly connected to the top of the first permanent magnet block 43, the conductive sheet 46 slidably contacting the bottom of the resistance plate 42, the conductive sheet 46 and the resistance plate 42 forming a sliding rheostat, and the sliding rheostat is electrically connected to a PLC controller. The regulating mechanism 5 includes outlets 51 opened on the inner wall of each conveying pipe 3. A sealing ring 52 is fixedly connected inside the outlet 51. An outlet head 53 is airtightly slidably connected to the inner wall of the sealing ring 52. The outlet head 53 is in the shape of an inverted frustum. An inlet is opened at the top of the outlet head 53. Multiple drain outlets 54 are opened on the outer peripheral wall of the outlet head 53. The inlet and the multiple drain outlets 54 are connected.
[0022] The distribution mechanism 4 also includes a barrier plate 47 fixedly connected to the bottom end of the second permanent magnet block 45, and a detection spring 48 is fixedly connected between the barrier plate 47 and the inner wall of the diversion box 2.
[0023] The regulating mechanism 5 includes a first filter plate 55 fixedly connected to the inlet of the delivery pipe 3, a movable shell 56 fixedly connected to the top of the diversion box 2, a movable groove 57 between the movable shell 56 and the diversion box 2, a plurality of electromagnetic telescopic rods 58 fixedly connected to the inner top wall of the movable shell 56, a second filter plate 59 fixedly connected to the telescopic end of the electromagnetic telescopic rod 58, and the outer walls of the first filter plate 55 and the second filter plate 59 slidingly contacting each other. The PLC controller is electrically connected to the electromagnetic telescopic rod 58 and forms a first control circuit.
[0024] A fixed cylinder 510 is fixedly connected to the inner wall of the conveying pipe 3. An electromagnet 511 is fixedly connected to the inner top wall of the fixed cylinder 510. A plastic spring 512 is fixedly connected to the bottom end of the electromagnet 511. A permanent magnet plate 513 is fixedly connected to the other end of the plastic spring 512. A connector 514 is fixedly connected to the bottom end of the permanent magnet plate 513. A push rod 515 is fixedly connected to the bottom end of the connector 514. The bottom end of the push rod 515 is fixedly connected to the top end of the spray head. The PLC controller is electrically connected to the electromagnet 511 and forms a second control circuit.
[0025] Each conveying pipe 3 has a rotating rod 516 rotatably connected to its inner wall, and a water wheel 517 is fixedly connected to the outer wall of the rotating rod 516.
[0026] One end of the rotating rod 516 is airtightly rotatably inserted through the conveying pipe 3. A detection shell 518 is fixedly connected to the outer wall of the conveying pipe 3. An N-class magnet 519 and an S-class magnet 520 are fixedly connected to the inner wall of the detection shell 518 and the outer wall of the conveying pipe 3, respectively. The N-class magnet 519 and the S-class magnet 520 are parallel to each other.
[0027] A copper rod 521 is fixedly connected to the outer wall of the rotating rod 516 inside the detection housing 518. The copper rod 521 is used to cut the magnetic field lines between the N-class magnet 519 and the S-class magnet 520. The copper rod 521 is electrically connected to a current detector. The current detector is electrically connected to the PLC controller and forms the first detection circuit.
[0028] A liquid level detection rod 522 is fixedly connected to the inner wall of the delivery pipe 3. The liquid level detection rod 522 is electrically connected to the PLC controller and forms a second detection circuit.
[0029] The working principle of this invention is as follows: When this chemical conveying and distribution device is in operation, the conveying pump 1 is started first. Its internal impeller rotates at high speed, generating negative pressure and a pressure difference to draw and pressurize the chemicals from the storage container. The pressurized chemicals then enter the distribution box 2 at a stable flow rate and pressure. The distribution box 2 is specially designed, with its inner wall made of wear-resistant and corrosion-resistant material, capable of withstanding chemical erosion for extended periods. Simultaneously, an arc-shaped buffer structure weakens pressure fluctuations, preventing impact on subsequent pipelines. After a brief period of pressure stabilization within the box, the chemicals flow through flanges to multiple conveying pipes 3. Sealing gaskets are installed at the flange connections to prevent leakage. The flow guide structure at the inlet of the conveying pipes 3 adopts a streamlined arc design to guide the fluid smoothly into the system, minimizing turbulence and initiating a highly efficient and stable overall conveying process. When chemicals flow through the diversion box 2, the distribution mechanism 4 is activated and performs flow detection and signal conversion. The detection box 41, bolted to the top wall of the diversion box 2, is a closed cavity filled with inert gas to prevent oxidation of internal components. A barrier plate 47 is welded to the bottom of the second permanent magnet block 45 inside. The surface of the barrier plate 47 is coated with an anti-corrosion coating, and its surface is perpendicular to the fluid direction. When chemicals flow through, they exert an impact force on the barrier plate 47. The magnitude of this impact force is positively correlated with the flow rate. Once a threshold is reached, the barrier plate 47 overcomes the elasticity of the detection spring 48 and slides on the slide rail. The slide rail surface is smooth and coated with grease to reduce friction, and the spring deforms with the sliding distance. The first permanent magnet block 43, attracted to the opposite magnetic poles of the second permanent magnet block 45, slides synchronously in the slide groove of the detection box 41. The conductive sheet 46, fixed with conductive adhesive at its top, slides simultaneously on the bottom of the resistance plate 42. The contact area between the conductive sheet 46 and the resistance plate 42 uses a highly conductive material to ensure stable signal transmission. Since the conductive sheet 46 and the resistive plate 42 form a sliding rheostat and are connected to a preset circuit, the resistance value changes linearly with the sliding, converting the flow rate change into an electrical signal, which is transmitted to the PLC controller through the shielded wire to provide an initial flow rate reference signal. Meanwhile, at the inlet of the delivery pipe 3, the regulating mechanism 5 controls the flow in coordination with the first and second filter plates. The first filter plate 55, fixed in the slot at the inlet of the delivery pipe 3, has the same structure as the second filter plate 59 inside the movable shell 56, which is fixed in the top bracket of the diversion box 2. Both plates are made of high-strength alloy material, which can withstand the impact of high-pressure chemicals, forming a flow control structure that can slide relative to each other. The electromagnetic telescopic rod 58, which forms the first control loop with the PLC controller, has its cylinder fixed to the top wall inside the movable shell 56. The telescopic end is connected to the second filter plate 59 through a coupling. The coupling can buffer the impact force during telescopic movement and extend the service life of the components. After receiving the signal from the distribution mechanism 4, the PLC commands the electromagnetic telescopic rod 58 to extend and retract according to the preset parameters, which drives the second filter plate 59 to slide in the movable groove 57. The inner wall of the movable groove 57 is provided with guide strips to ensure accurate sliding direction, change the overlapping area of the flow holes of the two plates, adjust the fluid flow gap, and ensure that the flow rate entering the delivery pipe 3 meets the initial distribution requirements and avoids fluctuations. The inner wall of the delivery pipe 3 is connected to the rotating rod 516 via a bearing. The bearing employs a sealed design to prevent chemical seepage. Its axis is perpendicular to the pipe axis. A streamlined blade waterwheel 517 is fixed to the outer wall of the inner section of the pipe via a flat key. The blade edges are polished smooth to reduce resistance and improve kinetic energy utilization. Chemicals flowing through the waterwheel 517 rotate, causing the rotating rod 516 to rotate synchronously. The rotation speed is positively correlated with the flow rate. One end of the rotating rod 516 passes through the pipe wall via a sealed bearing. The sealed bearing adopts a double-layer sealing structure to enhance the sealing performance and extends into the sealed detection shell 518, which is bolted to the outer wall of the delivery pipe 3. The detection shell 518 has a moisture-proof layer inside to adapt to humid environments. N-class and S-class magnets are respectively bonded to the inner wall of the shell and the outer wall of the delivery pipe. The magnets use strong magnetic materials to ensure magnetic field stability. The two magnets are parallel and opposite to each other to form a uniform magnetic field. A copper rod 521 is welded to the outer wall of the rotating rod 516 inside the detection shell. The surface of the copper rod 521 is plated with an anti-oxidation layer. Its axis is perpendicular to the rotating rod and its two ends extend into the magnetic field. When rotating, it cuts the magnetic field lines to generate an induced current. The magnitude of the current is positively correlated with the rotation speed. The current detector detects the current in real time, converts it into a flow signal, and transmits it to the PLC to form the first detection loop, realizing real-time dynamic flow detection and providing data for secondary regulation. In addition, the liquid level detection rod 522 is fixed by an insulating bracket on the inner wall of the delivery pipe 3. The insulating bracket is made of high-temperature resistant insulating material, and the detection end extends into the fluid area. The detection end is equipped with a sensitive probe that can quickly capture changes in liquid level. The rod body is made of corrosion-resistant material, which can adapt to the delivery environment of different types of chemicals. The liquid level detection rod 522 is connected to the PLC via a signal cable to form a second detection circuit. The signal cable is wrapped with a shielding layer to prevent interference. When the liquid level changes, the detection rod converts the change in capacitance or resistance into an electrical signal and transmits it to the PLC. This signal can accurately reflect the filling status of chemicals in the delivery pipe 3. When it detects that there is too much fluid in the pipe, exceeding the preset distribution amount and causing the liquid level to be too high, which may cause the distribution requirements to not be met, the PLC will incorporate this status signal into the comprehensive judgment, providing a trigger basis for the outlet action. At the same time, it avoids the problem of empty pipe operation due to too low liquid level or overflow due to too high liquid level. Together with the first detection circuit, it provides dual data of flow rate and liquid level, ensuring that the PLC obtains complete status information. The PLC controller, as the control core, has an internal redundant backup module to improve operational reliability. After receiving the real-time flow signal from the first detection loop, the liquid level signal from the second detection loop, and the initial flow signal from the distribution mechanism 4, it performs comprehensive analysis through a preset program. If the flow rate is abnormal or the liquid level is too high (too much fluid), and it is determined that the distribution requirements may not be met, an instruction is immediately sent to the second control loop.
[0030] In the circuit, the electromagnet 511, connected to the PLC, is fixed to the top wall of the inner wall of the fixed cylinder 510 inside the conveying pipe 3 by iron core bolts. The fixed cylinder 510 is a hollow cylindrical structure with a smooth inner wall to facilitate the sliding of the permanent magnet plate and provide a stable installation environment. The bottom hook of the electromagnet 511 is connected to a high-strength, corrosion-resistant plastic spring 512. The spring can withstand frequent extension and contraction and is not prone to fatigue. The other end of the spring is threaded to the permanent magnet plate 513. The permanent magnet plate 513 uses high-performance permanent magnet material to ensure long-lasting magnetism. The magnetic poles of the permanent magnet plate are opposite to those of the electromagnet when energized, generating a repulsive magnetic field force. After receiving a command, the electromagnet changes the current, and the change in magnetic strength causes the spring to extend and contract, driving the permanent magnet plate to slide on the inner wall of the fixed cylinder. The push rod is chrome-plated to enhance wear resistance. The push rod is connected to the inverted frustum-shaped water outlet head 53, which drives the water outlet head to slide airtightly at the water outlet 51 (the inner wall is equipped with a sealing ring to prevent leakage, and the sealing ring is made of a chemically corrosion-resistant material). The core function of outlet 51 is as follows: when there is too much fluid in the delivery pipe 3, which may cause the distribution requirements to be unmet, the drainage channel is opened by sliding the outlet head 53 to discharge the excess fluid. Furthermore, outlet 51 is connected to an external recycling tank via a dedicated pipe, allowing the discharged excess chemicals to flow directly into the recycling tank, achieving resource recycling and reuse, and avoiding waste and environmental pollution. The outlet head has a smaller diameter at the top and a larger diameter at the bottom. When sliding upwards, the flow area of the outlet increases, improving the efficiency of discharging excess fluid; when sliding downwards, the flow area decreases, allowing for precise control of the drainage volume according to the degree of fluid excess. Its top inlet is connected to the outer peripheral drainage outlet, and the drainage outlets are evenly distributed in a ring shape, ensuring that excess fluid is smoothly discharged into the recycling tank. Simultaneously, by adjusting the position of the outlet head, fine-tuning of the flow rate during regular delivery can be achieved, realizing diversified adjustment of the chemical output method.
[0031] Through the above actions, the flow rate is precisely controlled and excess fluid is discharged to meet the distribution requirements, while excess chemicals are recovered, ensuring that each conveying pipe 3 stably distributes chemicals according to the preset requirements, thus completing an efficient and environmentally friendly conveying process. Overview: A chemical dispensing method includes the following steps: S1. Start the delivery pump 1 to deliver the chemicals through the distribution box 2 to each delivery pipe 3; S2, the distribution mechanism 4 in the shunt box 2 works, and the chemical flow pushes the second permanent magnet block 45 and the baffle plate 47 to move, which drives the first permanent magnet block 43 and the conductive sheet 46 to slide on the resistor plate 42. The resulting sliding rheostat transmits the flow signal to the PLC controller. S3, the PLC controller controls the electromagnetic telescopic rod 58 of the corresponding conveying pipe 3 in the regulating mechanism 5 to move according to the received signal, and initially adjusts the flow rate by adjusting the overlap between the first filter plate 55 and the second filter plate 59. S4. At the same time, the PLC controller controls the change of magnetic force of the electromagnet 511, which drives the water outlet head 53 to slide in the sealing ring 52 through the plastic spring 512, permanent magnet plate 513 and push rod 515, thereby changing the opening size of the drain outlet 54 and precisely adjusting the flow rate. S5. The water wheel 517 in the conveying pipe 3 rotates with the flow of chemicals, driving the rotating rod 516 and copper rod 521 to cut the magnetic field lines between the N-level magnet 519 and the S-level magnet 520. The generated current is fed back to the PLC controller by the current detector to monitor the flow rate in real time. S6, the liquid level detection rod 522 transmits the liquid level information in the delivery pipe 3 to the PLC controller, and works in conjunction with the flow monitoring information to achieve dynamic control of chemical distribution; S7. When it is necessary to stop the distribution, turn off the delivery pump 1, reset each regulating mechanism 5, and complete the chemical delivery and distribution process.
[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.
Claims
1. A chemical dispensing device and method, characterized in that, include: A delivery pump (1) is fixedly connected to a flow divider box (2) at its output end, and a plurality of delivery pipes (3) are fixedly connected to the other end of the flow divider box (2). The distribution mechanism (4) includes a detection box (41) fixedly connected to the top wall of the shunt box (2), a resistance plate (42) fixedly connected to the top wall of the detection box (41), a first permanent magnet block (43) slidably connected to the inner wall of the detection box (41), a sliding groove (44) opened at the bottom of the detection box (41), a second permanent magnet block (45) slidably connected to the inner wall of the sliding groove (44), the first permanent magnet block (43) and the second permanent magnet block (45) are magnetically attracted, a conductive sheet (46) is fixedly connected to the top of the first permanent magnet block (43), the conductive sheet (46) slides in contact with the bottom of the resistance plate (42), the conductive sheet (46) and the resistance plate (42) form a sliding rheostat, and the sliding rheostat is electrically connected to a PLC controller. The regulating mechanism (5) includes an outlet (51) opened on the inner wall of each conveying pipe (3). A sealing ring (52) is fixedly connected inside the outlet (51). An outlet head (53) is airtightly slidably connected to the inner wall of the sealing ring (52). The outlet head (53) is in the shape of an inverted frustum. An inlet is opened at the top of the outlet head (53). Multiple drain outlets (54) are opened on the outer peripheral wall of the outlet head (53). The inlet is connected to the multiple drain outlets (54).
2. The chemical conveying and dispensing device according to claim 1, characterized in that, The distribution mechanism (4) also includes a barrier plate (47) fixedly connected to the bottom end of the second permanent magnet block (45), and a detection spring (48) is fixedly connected between the barrier plate (47) and the inner wall of the diversion box (2).
3. A chemical conveying and dispensing device according to claim 2, characterized in that, The regulating mechanism (5) includes a first filter plate (55) fixedly connected at the inlet of the conveying pipe (3), a movable shell (56) fixedly connected to the top of the diversion box (2), a movable groove (57) opened between the movable shell (56) and the diversion box (2), a plurality of electromagnetic telescopic rods (58) fixedly connected to the inner top wall of the movable shell (56), a second filter plate (59) fixedly connected to the telescopic end of the electromagnetic telescopic rod (58), and the outer walls of the first filter plate (55) and the second filter plate (59) slidingly contacting each other. The PLC controller is electrically connected to the electromagnetic telescopic rod (58) and forms a first control circuit.
4. A chemical conveying and dispensing device according to claim 1, characterized in that, A fixed cylinder (510) is fixedly connected to the inner wall of the conveying pipe (3). An electromagnet (511) is fixedly connected to the inner top wall of the fixed cylinder (510). A plastic spring (512) is fixedly connected to the bottom end of the electromagnet (511). A permanent magnet plate (513) is fixedly connected to the other end of the plastic spring (512). A connector (514) is fixedly connected to the bottom end of the permanent magnet plate (513). A push rod (515) is fixedly connected to the bottom end of the connector (514). The bottom end of the push rod (515) is fixedly connected to the top end of the spray head. The PLC controller is electrically connected to the electromagnet (511) and forms a second control circuit.
5. A chemical conveying and dispensing device according to claim 4, characterized in that, Each of the conveying pipes (3) has a rotating rod (516) rotatably connected to its inner wall, and a water wheel (517) is fixedly connected to the outer wall of the rotating rod (516).
6. A chemical conveying and dispensing device according to claim 5, characterized in that, One end of the rotating rod (516) is airtightly rotatably inserted through the conveying pipe (3). The outer wall of the conveying pipe (3) is fixedly connected to a detection shell (518). The inner wall of the detection shell (518) and the outer wall of the conveying pipe (3) are respectively fixedly connected to an N-level magnet (519) and an S-level magnet (520). The N-level magnet (519) and the S-level magnet (520) are parallel to each other.
7. A chemical conveying and dispensing device according to claim 6, characterized in that, The rotating rod (516) is fixedly connected to a copper rod (521) on the outer wall inside the detection shell (518). The copper rod (521) is used to cut the magnetic field lines between the N-class magnet (519) and the S-class magnet (520). The copper rod (521) is electrically connected to a current detector. The current detector is electrically connected to the PLC controller and forms the first detection circuit.
8. A chemical conveying and dispensing device according to claim 7, characterized in that, A liquid level detection rod (522) is fixedly connected to the inner wall of the delivery pipe (3). The liquid level detection rod (522) is electrically connected to the PLC controller and forms a second detection circuit.
9. A chemical dispensing method, applied to a chemical dispensing device as described in claims 1-8, characterized in that, Includes the following steps: S1. Start the delivery pump (1) to deliver the chemicals through the distribution box (2) to each delivery pipe (3); S2. The distribution mechanism (4) inside the shunt box (2) works, and the flow of chemicals pushes the second permanent magnet block (45) and the barrier plate (47) to move, which drives the first permanent magnet block (43) and the conductive sheet (46) to slide on the resistor plate (42). The resulting sliding rheostat transmits the flow signal to the PLC controller. S3. The PLC controller controls the electromagnetic telescopic rod (58) of the corresponding conveying pipe (3) in the regulating mechanism (5) to move according to the received signal, and adjusts the flow rate by adjusting the overlap between the first filter plate (55) and the second filter plate (59). S4. At the same time, the PLC controller controls the change of magnetic force of the electromagnet (511), and drives the water outlet (53) to slide in the sealing ring (52) through the plastic spring (512), permanent magnet plate (513) and push rod (515), thereby changing the opening size of the drain outlet (54) and precisely adjusting the flow rate. S5. The water wheel (517) in the conveying pipe (3) rotates with the flow of chemicals, driving the rotating rod (516) and copper rod (521) to cut the magnetic field lines between the N-level magnet (519) and the S-level magnet (520). The generated current is fed back to the PLC controller through the current detector to monitor the flow rate in real time. S6, the liquid level detection rod (522) transmits the liquid level information in the delivery pipe (3) to the PLC controller, and works in conjunction with the flow monitoring information to realize dynamic control of chemical distribution; S7. When it is necessary to stop the distribution, turn off the delivery pump (1), reset each regulating mechanism (5), and complete the chemical delivery and distribution process.