Flow detection device for environment-friendly liquid pesticide preparation

Abstract

The application discloses an environmental protection liquid pesticide configuration flow detection device, and relates to the technical field of intelligent sensors.The device comprises a flow detection pipe, a flow guide groove, an expansion groove, a drainage mechanism and a drainage mechanism.The top end of the flow detection pipe is provided with a water inlet pipe, the bottom end is provided with a water outlet pipe, the surface is provided with an intelligent controller and is connected with a flow detection sensor.In operation, pesticide raw materials flow into the water inlet pipe, are slowed down by the flow guide groove, are diffused by the expansion groove, and are then discharged into a reaction kettle, so that the stirring efficiency is improved.When the flow is close to the set value, the electromagnetic valve pushes the piston column and the conical extrusion column to rise, so as to reduce the drainage and extrusion gap and accurately control the flow.When the set amount is reached, the two columns rise to the limit sealing gap, and the excess raw materials are discharged to the drain pipe through the fine pipe and the coarse pipe.The device can realize the functions of speed reduction, expansion, accurate flow control and excess raw material discharge, effectively solves the defects of the existing flow detection device, and improves the accuracy of raw material addition during the configuration of the environmental protection liquid pesticide.

Description

TECHNICAL FIELD

[0001] The present application relates to intelligent sensor technology, in particular to a flow detection device for environmentally friendly liquid pesticide preparation. BACKGROUND

[0002] It is known that the raw materials used in the preparation of liquid pesticides will inevitably have certain toxicity, so when preparing environmentally friendly liquid pesticides, the amount of each raw material of the liquid pesticide must be strictly controlled. Therefore, when preparing environmentally friendly liquid pesticides, an intelligent flow detection device is needed to detect the added raw materials.

[0003] The deficiency of the prior art is that the commonly used flow detection device generally detects the amount of liquid pesticide raw materials flowing into the reaction kettle by fixed valves cooperating with flow detection sensors during use. After reaching the set amount, the sensor transmits a signal to the controller to control the closing of the valve. In this process, the liquid pesticide raw materials are still being poured into the reaction kettle. Therefore, the opening of the current flow valve is generally large, so the amount of liquid pesticide raw materials poured is manually controlled from the outside during pouring. Therefore, the amount of liquid pesticide raw materials poured into the reaction kettle during this process will be greater than the set amount, which will affect the proportion and data of the preparation of environmentally friendly liquid pesticides and affect the performance of environmentally friendly liquid pesticides. SUMMARY

[0004] The purpose of the present application is to provide a flow detection device for environmentally friendly liquid pesticide preparation to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solution: comprising: a flow detection pipe provided with a water inlet pipe at the top end and a water outlet pipe at the bottom end, the surface of the flow detection pipe is installed with an intelligent controller and electrically connected with a flow detection sensor, further comprising:

[0006] A flow guide groove is opened in the cavity of the middle end of the flow detection pipe;

[0007] Expansion grooves are opened in the cavities of both ends of the flow detection pipe, and the two groups of expansion grooves and the flow guide groove form a H-shaped cavity for flowing liquid pesticide raw materials in the flow detection pipe;

[0008] A drainage mechanism is formed between the flow guide groove and the expansion groove, respectively, and the expansion gap and the extrusion gap, the piston column and the conical extrusion column movably installed in the flow guide groove and the expansion groove are lifted upward, the flow rate of the liquid pesticide raw materials in the expansion groove is reduced to achieve precise control of the flow, and when the piston column and the conical extrusion column are lifted to the limit position, the extrusion gap and the drainage gap are passively blocked and extruded, and the excess liquid pesticide raw materials are extruded outward and discharged through the drainage mechanism.

[0009] As a further description of the above technical solution: the piston column is movably inserted in the guide groove, and a gap formed between the outer side of the piston column and the inner side wall of the guide groove has a gradually increasing inner diameter from top to bottom, which is a drainage gap.

[0010] As a further description of the above technical solution: the tapered extrusion column is movably inserted in the expansion groove, and a gap formed between the outer side of the tapered extrusion column and the inner side wall of the expansion groove has a gradually decreasing inner diameter from top to bottom, which is an extrusion gap.

[0011] As a further description of the above technical solution: the drainage mechanism includes an electromagnetic valve connected to the bottom end of the tapered extrusion column and installed in the middle of the bottom end of the flow detection pipe, the tapered extrusion column has a piston column integrally formed at the top end, the tapered extrusion column is a conical body with an isosceles trapezoidal cross section, and the diameter gradually increases from top to bottom.

[0012] As a further description of the above technical solution: a convex ring of rubber material is fixedly sleeved on the top end of the outer side of the piston column, and the outer diameter of the convex ring is smaller than the inner diameter of the top end of the guide groove.

[0013] As a further description of the above technical solution: the drainage mechanism includes an annular groove opened at the top end of the flow detection pipe and connected to the top end of the expansion groove, a coarse pipe is inserted and communicated in one side of the inner bottom of the annular groove, a ring valve is movably inserted in the annular groove through a return spring, a contact rod is fixedly connected at the top end of the bottom of the ring valve, the bottom end of the contact rod is inserted into the inner side wall of the expansion groove at the bottom end of the flow detection pipe, and the bottom end of the contact rod is in contact with the surface of the tapered extrusion column.

[0014] As a further description of the above technical solution: the ring valve is a hollow disc and has drainage grooves on both sides for installing semicircular filter plates, when the ring valve is inserted in the annular groove, the top of the ring valve is closed with the opening of the top of the annular groove, and drainage is not possible, when the ring valve is ejected from the annular groove, the drainage grooves for installing filter plates on the outer side of the ring valve are exposed, and drainage function is realized.

[0015] As a further description of the above technical solution: one side of the inner bottom of the annular groove is higher and the other side is lower, and a coarse pipe is inserted at the lowest point of the inner bottom of the annular groove, so that the water flow in the annular groove can flow into the coarse pipe.

[0016] As a further description of the above technical solution: the inner side wall of the connection between the bottom end of the guide groove and the lower end expansion groove is concave inward and has a fine pipe inserted and communicated at the lowest point, so that the liquid pesticide raw materials extruded from the extrusion gap and the liquid pesticide raw materials not discharged from the guide groove are discharged outward.

[0017] As a further description of the above technical solutions: the rough pipe and the other end of the thin pipe are connected in the drainage pipe arranged on one side of the flow detection pipe.

[0018] In the above technical solutions, the flow detection device for environmentally friendly liquid pesticide preparation has the following beneficial effects:

[0019] 1. Precise control of flow: the electromagnetic valve controls the lifting of the piston column and the tapered extrusion column, changes the size of the drainage gap and the extrusion gap, reduces the gap when the flow is close to the set value, reduces the discharge flow, completely blocks when the set amount is reached, and accurately controls the amount of added pesticide raw materials.

[0020] 2. Discharge of excess raw materials: when the piston column and the tapered extrusion column rise to the limit position, the extrusion gap and the drainage gap are blocked and extruded, and the excess raw materials are discharged from the thin pipe and the rough pipe, respectively, and the drainage mechanism effectively handles the excess liquid pesticide raw materials.

[0021] 3. Improve the efficiency of mixing and preparation: the diameter of the flow guide groove is reduced, the flow rate of the pesticide liquid is reduced, and the piston column and the tapered extrusion column are used to make the pesticide flow along the inner wall of the expansion groove and add it to the surrounding of the reaction kettle, shorten the mixing time in the later stage, and improve the efficiency of mixing and preparation. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments or prior art of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0023] Figure 1 The overall structure schematic diagram provided by the embodiments of the present application;

[0024] Figure 2 The structure schematic diagram of the flow detection pipe inside the embodiments of the present application;

[0025] Figure 3 The structure schematic diagram of the flow detection pipe inside the embodiments of the present application; Figure 2 The enlarged view of A in the middle;

[0026] Figure 4 The structure schematic diagram of the annular groove provided by the embodiments of the present application;

[0027] Figure 5 The structure schematic diagram of the flow guide groove provided by the embodiments of the present application;

[0028] Figure 6 The structure schematic diagram of the piston column and the tapered extrusion column provided by the embodiments of the present application;

[0029] Figure 7The embodiment of the present application provides Figure 5 An enlarged view at B in FIG. 1;

[0030] Figure 8 The embodiment of the present application provides Figure 5 An enlarged view at C in FIG. 1;

[0031] Figure 9 The structural schematic diagram of the ring valve provided by the embodiment of the present application;

[0032] Figure 10 The structural schematic diagram of the filter plate provided by the embodiment of the present application.

[0033] Explanation of reference signs:

[0034] 1 - water inlet pipe; 2 - flow detection pipe; 3 - intelligent controller; 4 - drainage pipe; 5 - water outlet pipe; 6 - coarse pipe; 7 - fine pipe; 8 - annular groove; 9 - ring valve; 10 - flow guide groove; 11 - abutting rod; 12 - piston column; 13 - drainage gap; 14 - extrusion gap; 15 - expansion groove; 16 - conical extrusion column; 17 - electromagnetic valve; 18 - convex ring; 19 - drainage groove; 20 - return spring; 21 - filter plate. DETAILED DESCRIPTION

[0035] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0036] Please refer to Figures 1-10 The embodiment of the present application provides a flow detection device for environmentally-friendly liquid pesticide configuration technical scheme: comprising: a flow detection pipe 2 provided with a water inlet pipe 1 at the top end and a water outlet pipe 5 at the bottom end, the surface of the flow detection pipe 2 is provided with an intelligent controller 3 and is electrically connected with a flow detection sensor, and further comprising:

[0037] A flow guide groove 10 is arranged in the cavity of the middle end of the flow detection pipe 2;

[0038] Expansion grooves 15 are arranged in the cavities of both ends of the flow detection pipe 2, and the two groups of expansion grooves 15 and the flow guide groove 10 form a H-shaped cavity for flowing liquid pesticide raw materials in the flow detection pipe 2;

[0039] A drainage mechanism is formed between the flow guide groove 10 and the expansion groove 15, and the drainage gap 13 and the extrusion gap 14 are formed, respectively, in the process that the piston column 12 and the conical extrusion column 16 movably arranged in the flow guide groove 10 and the expansion groove 15 are lifted upward, the flow rate of the liquid pesticide raw materials in the expansion groove 15 is reduced to realize accurate flow control, and when the piston column 12 and the conical extrusion column 16 are lifted to the limit position, the extrusion gap 14 and the drainage gap 13 are passively blocked and extruded, and the excess liquid pesticide raw materials are extruded outward and discharged through the drainage mechanism.

[0040] In still another embodiment of the present application, preferably, the piston column 12 is movably inserted into the flow guide groove 10, and a gap formed between the outer side of the piston column 12 and the inner wall of the flow guide groove 10 has a gradually increasing inner diameter from top to bottom, which is the drainage gap 13.

[0041] In still another embodiment of the present application, the tapered extrusion column 16 is movably inserted into the expansion groove 15, and a gap formed between the outer side of the tapered extrusion column 16 and the inner wall of the expansion groove 15 has a gradually decreasing inner diameter from top to bottom, which is the extrusion gap 14.

[0042] In still another embodiment of the present application, the drainage mechanism comprises: the electromagnetic valve 17 connected to the bottom end of the tapered extrusion column 16 and installed in the middle of the bottom end of the flow detection tube 2, the piston column 12 integrally formed at the top end of the tapered extrusion column 16, and the tapered extrusion column 16 being a conical body with an isosceles trapezoidal cross section and gradually increasing diameter from top to bottom.

[0043] In still another embodiment of the present application, the convex ring 18 made of rubber is fixedly sleeved at the top end of the outer side of the piston column 12, and the outer diameter of the convex ring 18 is smaller than the inner diameter of the top end of the flow guide groove 10.

[0044] In still another embodiment of the present application, the drainage mechanism comprises: the annular groove 8 provided at the top end of the flow detection tube 2 and connected to the top end of the flow guide groove 10, the thick pipe 6 movably inserted into and communicated with the inner bottom side of the annular groove 8, the annular valve 9 movably inserted into the annular groove 8 through the return spring 20, the top end of the abutting rod 11 fixedly connected to the bottom of the annular valve 9, the bottom end of the abutting rod 11 movably inserted into the inner wall of the expansion groove 15 at the bottom end of the flow detection tube 2, and the bottom end of the abutting rod 11 abuttingly connected to the surface of the tapered extrusion column 16.

[0045] In still another embodiment of the present application, the annular valve 9 is a hollow disc and has the drainage groove 19 with a semicircular arc-shaped filter plate 21 installed on both sides, when the annular valve 9 is movably inserted into the annular groove 8, the top of the annular valve 9 is closed with the opening at the top of the annular groove 8, and drainage is not possible, when the annular valve 9 is ejected from the annular groove 8, the drainage groove 19 with the filter plate 21 installed on the outer side of the annular valve 9 is exposed, and the drainage function is realized.

[0046] In still another embodiment of the present application, the inner bottom side of the annular groove 8 is high on one side and low on the other side, and the thick pipe 6 is movably inserted into the lowest point of the inner bottom of the annular groove 8, so that the water flow in the annular groove 8 can flow into the thick pipe 6.

[0047] In another embodiment of the present application, the inner side wall of the bottom end of the flow guide groove 10 is recessed inwardly and is connected to the lower end expansion groove 15, and a thin tube 7 is inserted and communicated at the lowest point, so as to realize the outward discharge of the liquid pesticide raw material extruded in the extrusion gap 14 and the liquid pesticide raw material not discharged in the flow guide groove 10.

[0048] In another embodiment of the present application, preferably, the other end of the thick tube 6 and the thin tube 7 is connected in the drainage pipe 4 arranged on one side of the flow detection pipe 2.

[0049] Device structure

[0050] The flow detection pipe 2 is provided with the water inlet pipe 1 at the top end and the water outlet pipe 5 at the bottom end. The intelligent controller 3 is mounted on the surface of the pipe and is electrically connected with the flow detection sensor. Various functional cavities and components are arranged in the pipe.

[0051] The flow guide groove 10 is arranged in the middle end of the flow detection pipe 2 and is a cavity structure. The piston column 12 is movably inserted in the flow guide groove 10, and the outer side of the piston column 12 and the inner side wall of the flow guide groove 10 form the drainage gap 13, and the inner diameter of the gap gradually increases from top to bottom.

[0052] The expansion groove 15 is arranged in the two ends of the flow detection pipe 2, and the two groups of expansion grooves 15 and the cavity for the liquid pesticide raw material formed by the flow guide groove 10 in the pipe form a H-shaped structure. The tapered extrusion column 16 is movably inserted in the expansion groove 15, and the outer side of the tapered extrusion column 16 and the inner side wall of the expansion groove 15 form the extrusion gap 14, and the inner diameter of the gap gradually decreases from top to bottom.

[0053] The drainage mechanism includes the electromagnetic valve 17 connected to the bottom end of the tapered extrusion column 16, and the electromagnetic valve 17 is arranged in the middle position of the bottom end of the flow detection pipe 2. The piston column 12 is integrally formed at the top end of the tapered extrusion column 16, and the tapered extrusion column 16 is a circular cone with an isosceles trapezoidal cross section, and the diameter gradually increases from top to bottom. The convex ring 18 made of rubber is fixedly sleeved at the outer side of the top end of the piston column 12, and the outer diameter of the convex ring 18 is smaller than the inner diameter of the top end of the flow guide groove 10.

[0054] Drainage mechanism: the expansion groove 15 at the upper end of the flow detection tube 2 is connected with the top end of the flow guide groove 10, and an annular groove 8 is arranged at the connection position. The bottom side of the annular groove 8 is inserted and communicated with the thick pipe 6, and the annular valve 9 is movably inserted in the annular groove 8 through the reset spring 20. The bottom of the annular valve 9 is fixedly connected with the top end of the abutting rod 11, the bottom end of the abutting rod 11 is inserted into the inner wall of the expansion groove 15 at the bottom end of the flow detection tube 2, and the bottom end of the abutting rod 11 abuts and connects the surface of the tapered extrusion column 16. The annular valve 9 is in the form of a hollow disc, and the drainage groove 19 for installing the semicircular arc filter plate 21 is arranged on both sides. The bottom side of the annular groove 8 is higher than the other side, and the thick pipe 6 is inserted at the lowest point. The inner wall of the connection position between the bottom end of the flow guide groove 10 and the lower expansion groove 15 is inwardly recessed, and the thin pipe 7 is inserted and communicated at the lowest point. The other end of the thick pipe 6 and the thin pipe 7 is connected in the drainage pipe 4 arranged on one side of the flow detection tube 2.

[0055] Working process:

[0056] Installation preparation: when the environmental-friendly pesticide is configured, the flow detection tube 2 is installed at the pesticide adding port, the water outlet pipe 5 at the bottom end of the flow detection tube 2 is connected to the inside of the reaction kettle for pesticide configuration, and the pesticide raw material is added through the water inlet pipe 1. At the same time, the drainage pipe 4 is connected to the external recovery pipeline. The flow detection sensor at the bottom end of the flow detection tube 2 detects the flow of the pesticide raw material discharged into the reaction kettle in real time, and controls the electromagnetic valve 17 of the drainage mechanism.

[0057] Normal adding process: the pesticide raw material flows into the flow detection tube 2 from the water inlet pipe 1, at this time, the inside of the tube is in an open state. The liquid raw material first flows through the flow guide groove 10, then flows downward to the expansion groove 15, and finally is discharged into the reaction kettle through the water outlet pipe 5. The diameter of the flow guide groove 10 is reduced, which can reduce the flow rate of the pesticide liquid, and can make the pesticide matching piston column 12 and the tapered extrusion column 16 flow downward along the inner wall of the expansion groove 15, add to the surrounding of the reaction kettle, shorten the stirring time in the later stage, and improve the stirring efficiency.

[0058] Flow precision control: The flow detection sensor at the bottom end of the expansion groove 15 detects the flow of pesticide raw materials. When the flow is detected to be about to reach the set amount, the electromagnetic valve 17 is activated to push the conical extrusion column 16 and the piston column 12 upward, reducing the drainage gap 13 and the extrusion gap 14, reducing the real-time flow of pesticide discharged into the reaction kettle, and more accurately controlling the amount of addition. When the set amount of raw materials is reached, the electromagnetic valve 17 completely pushes the conical extrusion column 16 and the piston column 12 upward. At this time, the conical extrusion column 16 is completely inserted into the expansion groove 15, and the piston column 12 is completely inserted into the flow guide groove 10, and the extrusion gap 14 disappears. During the upward insertion of the conical extrusion column 16, due to the characteristics of the small end of the extrusion gap 14 at the bottom and the large end, the position of the extrusion gap 14 at the bottom connected to the reaction kettle is completely closed, and the excess pesticide raw materials in the extrusion gap 14 cannot be discharged downward and will be extruded from the fine tube 7 to the drain pipe 4. At the same time, the excess pesticide in the drainage gap 13 between the piston column 12 and the flow guide groove 10 will also be discharged from the fine tube 7. When the piston column 12 is lifted upward, the convex ring 18 on the outer side wall of the top end of the piston column 12 is attached to the inner side wall of the flow guide groove 10, preventing the pesticide from flowing into the flow guide groove 10, and lifting the blocked pesticide raw materials upward to the coarse tube 6 position and discharging them into the drain pipe 4.

[0059] Excess raw material discharge: When the conical extrusion column 16 and the piston column 12 are lifted upward, the top of the surface of the conical extrusion column 16 contacts the contact rod 11 provided at the top of the inner side wall of the expansion groove 15, lifting the contact rod 11 upward. The annular valve 9 slidingly inserted into the annular groove 8 has its bottom end connected to the contact rod 11 and is connected to the annular groove 8 by a return spring 20. When the contact rod 11 is subjected to upward contact force, the annular valve 9 is lifted from the annular groove 8, and the four surrounding drainage grooves 19 discharge the excess pesticide raw materials discharged into the flow detection tube 2 and the pesticide lifted by the convex ring 18 into the annular groove 8, and discharge the excess pesticide into the drain pipe 4 through the coarse tube 6.

[0060] Subsequent raw material addition: When adding the next raw material, set the required amount through the intelligent controller 3, and the electromagnetic valve 17 is retracted downward to pull the piston column 12 and the conical extrusion column 16 downward. The annular valve 9 is repositioned and inserted into the annular groove 8 with the cooperation of the return spring 20, sealing the annular groove 8, and the next raw material can continue to be discharged downward through the flow detection tube 2.

[0061] Through the above structure and working process, the flow detection device uses the drainage gap 13 and the extrusion gap 14 of the drainage mechanism, and controls the height of the piston column 12 and the conical extrusion column 16 by the electromagnetic valve 17, to achieve the effect of reducing the flow rate, expanding the drop range, improving the stirring and configuration efficiency, and precisely controlling the flow when adding pesticide raw materials, and providing the function of sealing and discharging excess raw materials when reaching the set amount.

[0062] When the environmental-friendly pesticide is configured, in order to improve the precision of the adding amount of each component, the intelligent flow detection device is used to detect the flow, the flow detection pipe 2 is installed at the adding port of the pesticide to be used, the water outlet pipe 5 opened at the bottom end of the flow detection pipe 2 is connected in the reaction kettle of the pesticide configuration, the raw materials of the pesticide are added through the water inlet pipe 1, and the drain pipe 4 is connected to the external recovery pipeline, so that the excess raw materials are discharged outward;

[0063] After the flow detection pipe 2 is installed, the intelligent flow detection sensor is arranged at the bottom end position in the flow detection pipe 2, which is used to detect the flow of the pesticide raw materials discharged into the reaction kettle in real time, and control the electromagnetic valve 17 connected to the drainage mechanism at the bottom of the flow detection pipe 2;

[0064] During the adding process of the pesticide raw materials from the water inlet pipe 1 into the flow detection pipe 2, the flow detection pipe 2 is opened, the liquid raw materials flow through the water inlet pipe 1 into the flow guide groove 10 and continue to flow downward into the expansion groove 15, and then flow through the expansion groove 15 into the water outlet pipe 5 and into the reaction kettle, the flow guide groove 10 arranged in the flow detection pipe 2 is contracted to the center to form a channel with reduced diameter, and the expansion groove 15 is arranged to have a channel with a diameter larger than that of the flow guide groove 10, so that the flow of the pesticide liquid discharged is reduced by the flow guide groove 10 and diffused to the four directions by the flow guide groove 10, so that the pesticide can cooperate with the piston column 12 and the conical extrusion column 16 to flow downward along the inner wall of the expansion groove 15, and the liquid pesticide raw materials are added to the four directions of the reaction kettle, so that the liquid pesticide raw materials are added to the four directions of the reaction kettle, and the diffusion adding of the pesticide is shortened, the stirring time during the later configuration is shortened, and the stirring efficiency of the pesticide configuration is improved;

[0065] The flow detection sensor arranged at the bottom end of the expansion groove 15 detects the flow of the raw material of the pesticide. When the flow is detected to reach the set amount, the electromagnetic valve 17 drives the tapered extrusion column 16 and the piston column 12 to be pushed upward in the flow detection pipe 2, and the drainage gap 13 and the extrusion gap 14 available for the flow of the liquid raw material are reduced, so as to reduce the real-time flow of the pesticide discharged into the reaction kettle, so as to better accurately control the amount of added pesticide raw material. After reaching the set amount of raw material, the electromagnetic valve 17 completely pushes the tapered extrusion column 16 and the piston column 12 upward, at which time the tapered extrusion column 16 is completely inserted into the expansion groove 15, and the piston column 12 is completely inserted into the flow guide groove 10. At this time, the extrusion gap 14 multiplied by the tapered extrusion column 16 and the inner wall of the expansion groove 15 disappears. In the process of inserting the tapered extrusion column 16 into the expansion groove 15, the tapered extrusion column 16 is attached to the inner wall of the expansion groove 15. Due to the characteristics of the small bottom and large top size of the extrusion gap 14, the tapered extrusion column 16 will first completely close the extrusion gap 14 at the bottom connected to the reaction kettle. At this time, the excess agricultural raw material in the extrusion gap 14 cannot be discharged downward and is extruded by the tapered extrusion column 16 in the expansion groove 15 to flow from the fine tube 7 to the drain pipe 4. At this time, due to the continuous upward insertion of the tapered extrusion column 16, after the extrusion gap 14 is completely extruded and closed, the excess pesticide raw material in the extrusion gap 14 is discharged from the fine tube 7, and the excess pesticide in the drainage gap 13 between the piston column 12 and the flow guide groove 10 is also discharged from the fine tube 7. The opening diameter of the flow guide groove 10 gradually increases from the top to the bottom. Therefore, when the piston column 12 is located below the flow guide groove 10 to add the pesticide raw material into the reaction kettle, the convex ring 18 cannot be attached to the inner wall of the flow guide groove 10 to discharge the pesticide downward. After the piston column 12 is pushed upward, the convex ring 18 arranged at the top outer wall of the piston column 12 will be attached to the inner wall of the flow guide groove 10 to prevent the pesticide from flowing into the flow guide groove 10, and the pesticide raw material blocked by the convex ring 18 is lifted upward to the position of the thick tube 6 and discharged into the drain pipe 4;

[0066] Meanwhile, when the tapered extrusion column 16 and the piston column 12 are lifted upward, the top surface of the tapered extrusion column 16 contacts the abutting rod 11 arranged on the top of the inner side wall of the expansion groove 15 to lift the abutting rod 11 upward, the annular valve 9 used for plugging the annular groove 8 is slidably inserted into the annular groove 8 arranged on the top of the inner side wall of the flow detection tube 2, the bottom end of the annular valve 9 is connected between the abutting rods 11, and the annular valve 9 is connected between the annular grooves 8 by using the reset spring 20, after the abutting rods 11 are subjected to the upward abutting force of the tapered extrusion column 16, the annular valve 9 is lifted from the annular groove 8, the drainage groove 19 around the annular valve 9 discharges the excess pesticide raw materials discharged into the flow detection tube 2 and the pesticide lifted upward through the convex ring 18 into the annular groove 8, and discharges the excess pesticide into the drain pipe 4 through one end of the thick pipe 6 connected to the bottom end of one side of the annular groove 8 to discharge outward, when adding the next raw material, only the required amount is set by the intelligent controller 3, at this time, the electromagnetic valve 17 is retracted downward to pull the piston column 12 and the tapered extrusion column 16 downward, the annular valve 9 is reset and inserted into the annular groove 8 by cooperating with the reset spring 20, so as to plug the annular groove 8, and the next raw material can continue to be discharged downward through the flow detection tube 2;

[0067] The drainage gap 13 formed between the flow guide groove 10 and the piston column 12, the extrusion gap 14 formed between the expansion groove 15 and the tapered extrusion column 16, the drainage mechanism formed by the drainage gap 13 and the extrusion gap 14, the change of the shape and size of the drainage gap 13 and the extrusion gap 14, and the lifting and lowering of the piston column 12 and the tapered extrusion column 16 by the electromagnetic valve 17 are cooperated, so as to reduce the flow rate of the pesticide raw materials and increase the dropping range into the reaction kettle when the pesticide raw materials need to be added, improve the configuration efficiency of the pesticide stirring, and more accurately control the amount of the added pesticide raw materials by reducing the flow rate and reducing the flow when reaching the set amount;

[0068] The drainage mechanism provides the effects of drainage, flow rate reduction, dropping range expansion and flow rate accurate control when adding raw materials, provides the plugging effect after reaching the set amount, and extrudes the excess liquid raw materials in the flow detection tube 2 upward during the plugging process, and cooperates with the drainage mechanism to discharge the excess liquid raw materials.

[0069] The above only describes certain exemplary embodiments of the present application in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. An environmental-friendly liquid pesticide preparation flow detecting device, comprising: The flow detection pipe (2) is provided with a water inlet pipe (1) at the top end and a water outlet pipe (5) at the bottom end, and the surface of the flow detection pipe (2) is mounted with an intelligent controller (3) and electrically connected with a flow detection sensor, characterized in that further comprising: A guide groove (10) is arranged in the cavity of the middle end of the flow detection pipe (2); An expansion groove (15) is arranged in the cavity of the two ends of the flow detection pipe (2), and the two groups of expansion grooves (15) and the guide groove (10) form a hollow cavity in the flow detection pipe (2) to form a H-shaped cavity for liquid pesticide raw materials; A drainage mechanism is arranged between the guide groove (10) and the expansion groove (15) to form a drainage gap (13) and an extrusion gap (14), respectively, and the piston column (12) and the conical extrusion column (16) movably arranged in the guide groove (10) and the expansion groove (15) are lifted upward, the flow rate of the liquid pesticide raw materials in the expansion groove (15) is reduced to realize precise control of the flow, and when the piston column (12) and the conical extrusion column (16) are lifted to the limit position, the extrusion gap (14) and the drainage gap (13) are passively blocked and extruded, and the excess liquid pesticide raw materials are extruded outward and discharged through the drainage mechanism; The drainage mechanism comprises: an annular groove (8) arranged at the connection position of the expansion groove (15) at the upper end of the flow detection pipe (2) and the top end of the guide groove (10), a coarse pipe (6) inserted and communicated with one side of the bottom of the annular groove (8), a ring-shaped valve (9) movably inserted in the annular groove (8) through a return spring (20), and a contact rod (11) fixedly connected with the top end of the two ends of the bottom of the ring-shaped valve (9), the bottom end of the contact rod (11) is inserted into the inner side wall of the expansion groove (15) at the bottom end of the flow detection pipe (2), and the bottom end of the contact rod (11) is in surface contact with the conical extrusion column (16). The inner side wall of the connection position of the bottom end of the guide groove (10) and the lower expansion groove (15) is recessed inward and inserted and communicated with a fine pipe (7) at the lowest point to realize the outward discharge of the liquid pesticide raw materials extruded in the extrusion gap (14) and the liquid pesticide raw materials not discharged in the guide groove (10).

2. The flow detecting device for environmentally friendly liquid pesticide according to claim 1, wherein The piston column (12) is movably inserted in the guide groove (10), and the gap formed between the outer side of the piston column (12) and the inner side wall of the guide groove (10) has an increasing inner diameter from top to bottom, which is the drainage gap (13).

3. The flow detecting device for environmentally friendly liquid pesticide according to claim 1, wherein The conical extrusion column (16) is movably inserted in the expansion groove (15), and the gap formed between the outer side of the conical extrusion column (16) and the inner side wall of the expansion groove (15) has a decreasing inner diameter from top to bottom, which is the extrusion gap (14).

4. The flow detecting device for environmentally friendly liquid pesticide according to claim 1, wherein The drainage mechanism comprises: an electromagnetic valve (17) connected to the bottom end of the conical extrusion column (16) and installed at the middle position of the bottom end of the flow detection pipe (2), the piston column (12) is integrally formed at the top end of the conical extrusion column (16), the conical extrusion column (16) is a conical body with an isosceles trapezoidal cross section, and the diameter gradually increases from top to bottom.

5. The flow detecting device for environmentally friendly liquid pesticide according to claim 4, wherein The outer side of the top end of the piston column (12) is fixedly sleeved with a convex ring (18) made of rubber, and the outer diameter of the convex ring (18) is smaller than the inner diameter of the top end of the guide groove (10).

6. The flow detecting device for environmentally friendly liquid pesticide according to claim 1, wherein The annular valve (9) is hollow disc-shaped and has two sides provided with a drainage groove (19) for installing a semicircular filter plate (21). When the annular valve (9) is inserted into the annular groove (8), the top of the annular valve (9) is closed with the opening of the top of the annular groove (8), and drainage is not possible. When the annular valve (9) is ejected from the annular groove (8), the drainage groove (19) of the annular valve (9) is exposed, and the drainage function is realized.

7. The flow detecting device for environmentally friendly liquid pesticide according to claim 6, wherein The inner bottom of the annular groove (8) is high on one side and low on the other side, and the coarse pipe (6) is inserted into the lowest point of the inner bottom of the annular groove (8), so that the water flow in the annular groove (8) can flow into the coarse pipe (6).

8. The flow detecting device for environmentally friendly liquid pesticide according to claim 7, wherein The other end of the coarse pipe (6) and the fine pipe (7) is connected into the drainage pipe (4) provided on one side of the flow detection pipe (2).

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