A proportional pump

Abstract

This invention belongs to the field of proportional pump technology, specifically relating to a proportional pump, including a support frame. A proportional control module, a stirring module, and a pumping module are sequentially mounted on the support frame. At least one proportional control module is mounted on the support frame. A controller mounting box is fixedly installed on the rear side of the support frame, and a controller is detachably installed inside the controller mounting box. The proportional control module, stirring module, and pumping module are connected via a pipeline module. Existing proportional pumps still have significant shortcomings in terms of proportional adjustment methods, mixing uniformity, output stability, modularity, and multi-component adaptability. This invention, using a proportional control module, stirring module, pumping module, and pipeline module, achieves real-time, high-precision proportional adjustment during operation, thorough and active stirring of the premixed liquid, continuous and stable pressure output without pulsation, and independent replacement and rapid maintenance of each module.

Description

Technical Field

[0001] This invention belongs to the field of proportional pump technology, and specifically relates to a proportional pump. Background Technology

[0002] A proportioning pump is a fluid mixing device that mixes multiple liquids in a set ratio. It is widely used in horticulture, animal husbandry, chemical industry, fire fighting, agriculture, and spraying. Its technical level directly affects production quality. Currently, proportioning pumps mainly face the following technical problems: First, the adjustment methods are outdated. Most systems rely on manual mechanical adjustments, such as screw-in adjustments or lever adjustments, which are cumbersome and require machine shutdown, making dynamic adjustment during operation impossible and impacting efficiency and flexibility. Second, the mixing uniformity is poor. Mixing is achieved solely through pipe flow or simple merging, lacking active stirring, making it difficult to meet the high uniformity requirements of applications such as spraying and chemical processing. Third, output stability is poor. The reciprocating plunger structure causes periodic flow pulsations, and pressure fluctuations are detrimental to pressure-stabilized applications such as spraying. Fourth, modularity is low. Highly integrated components require complete disassembly for maintenance, resulting in high maintenance costs and poor scalability. Finally, the range of media types is limited. Most systems only support two components; multiple components require multiple units connected in series, significantly increasing cost and complexity.

[0003] To address the above issues, relevant patents have proposed different solutions: For example, application number 201711237565.1 discloses an automatic proportional pump powered by water pressure, which does not require an external power supply and is suitable for scenarios with water pressure, such as horticulture and animal husbandry. Its drawbacks are: the proportional adjustment relies on manual operation by screwing in the thread, which has limited accuracy and is inconvenient; there is no independent stirring device, and the mixing relies solely on pipeline flow, making it difficult to guarantee uniformity; the pumping power depends on water pressure, and the output pressure fluctuates with the water source, making it impossible to stabilize the pressure; and it only supports two-component mixing of water and one additive, which cannot be expanded.

[0004] Application No. 202111504893.X discloses a multi-media mixing proportioning pump, which uses a motor-driven eccentric wheel and an umbrella-shaped check valve to mix gases and liquids, and achieves rapid foaming. Its drawbacks include: complex structure, numerous parts, difficult assembly, and high cost; its function is focused on foaming, resulting in weak cross-scenario adaptability; proportional control relies on motor speed and lacks an independent precision adjustment mechanism, limiting accuracy; and it is entirely dependent on an external power source, making it unusable in power outage scenarios.

[0005] For example, application number 202520524028.9 uses two sets of symmetrical pump bodies connected by levers. The proportion is adjusted by manually moving the support base to change the position of the fulcrum, and the structure is intuitive. Its shortcomings are: adjustment requires stopping the machine and cannot be dynamically adjusted during operation; long-term wear of the lever's waist-shaped groove leads to increased gaps and decreased proportional accuracy; it only supports two-component mixing, has no active stirring device, and the mixing uniformity is insufficient.

[0006] In summary, existing proportional pumps still have significant shortcomings in terms of proportional adjustment methods, mixing uniformity, output stability, modularity, and adaptability to multiple components. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide a proportional pump.

[0008] The objective of this disclosure can be achieved through the following technical solutions: A proportional pump includes a support frame, on which a proportional control module, a stirring module, and a pumping module are sequentially mounted. At least one proportional control module is mounted on the support frame. A controller mounting box is fixedly installed on the rear side of the support frame, and a controller is detachably installed inside the controller mounting box. The proportional control module, stirring module, and pumping module are connected via a pipeline module. The proportional control module is used to perform quantitative proportional distribution of multi-component liquids before the liquid enters the pipeline module. The proportioned liquid is then transported via the pipeline module to the stirring module, which has a closed stirring chamber structure for further mixing of the liquid. After mixing, the liquid is further transported via the pipeline module to the pumping module, where it is pressure-stabilized and pumped outwards.

[0009] Furthermore, the proportional control module is provided with a base, and the base is provided with no less than two stroke adjustment mechanisms. The number of stroke adjustment mechanisms is determined by the number of liquid types being dispensed. Each stroke adjustment mechanism includes a first motor, a stepped shaft, a first connecting rod, a second connecting rod, a motor support, a second motor, a lead screw, a third connecting rod, a slider, a piston rod, a fixed block, a piston cylinder, a first valve, and a second valve. The first motor is fixedly installed in a first fixing groove on the base. The rotating shaft of the first motor is provided with a stepped shaft fixedly connected to it. The first connecting surface of the stepped shaft is provided with a first connecting rod rotatably connected to it. The other end of the first connecting rod is rotatably connected to a second connecting rod. The other end of the second connecting rod is rotatably connected to a second connecting surface of the motor support. The motor support is provided with a fixed second motor, and the rotating shaft of the second motor is fixedly connected to it. A lead screw is fixedly connected to a threaded hole on the stepped shaft. A third connecting rod is rotatably connected to the third connecting surface of the motor support. The other end of the third connecting rod is rotatably connected to a slider. The slider is slidably connected to a slide rail on the base and can move linearly along the slide rail. A piston rod is fixedly mounted on the slider. A fixed block is fixedly connected to the piston rod and is also slidably connected to the slide rail on the base. The piston rod is slidably connected to a piston cylinder. The piston cylinder is fixedly connected to a second fixed groove on the base. A first water inlet is provided at the end of the piston cylinder. A second water inlet is provided on the cylindrical surface of the piston cylinder near the first water inlet. A first valve is provided at the second water inlet. A second valve is provided at the first water inlet. The second valve is connected to the pipe module.

[0010] Furthermore, the stirring module includes: a top cover plate, a sealing cover, a planetary carrier, a third motor, a sun gear, planetary gears, an internal gear, stirring blades, and a stirring tank. A third water inlet is located at the bottom of the stirring tank, and several guide plates are provided inside the stirring tank to balance the flow velocity, reduce local velocity differences, and reduce fluid impact and water hammer effect. A top cover plate is detachably connected to the opening at the top of the stirring tank. Three centrally symmetrically distributed limiting grooves and a pipe interface are located above the top cover plate. The pipe module is connected to the stirring module through the pipe interface and supplies premixed liquid to the stirring module through the pipe interface. A third... The motor, specifically the third motor, has its shaft passing through the top cover plate and fixedly connected to the sun gear. The sun gear is meshed with three centrally symmetrically distributed planetary gears. A planet carrier is rotatably connected above the top cover plate. It should be noted that the planet carrier does not contact the third motor. The three ends of the planet carrier pass through the three limiting grooves and are rotatably connected to the planetary gears. The planet carrier mainly provides support and positioning for the three planetary gears. The three planetary gears are meshed with an internal gear. The outer ring of the internal gear is fixedly connected to the inner side of the top cover plate. A stirring blade is fixedly connected below the inner ring of the three planetary gears. A sealing cover is detachably connected above the top cover plate.

[0011] Furthermore, the pumping module includes a fourth motor, a first end cover plate, a first pumping gear, a second pumping gear, and a second end cover plate. The fourth motor is fixedly mounted on the first end cover plate, and the first pumping gear is fixedly connected to the shaft of the fourth motor. The first pumping gear is provided with a meshing second pumping gear, and the second pumping gear is rotatably connected to the first end cover plate through a bearing. The first end cover plate is provided with a detachable second end cover plate. In addition, the first end cover plate is also provided with a fourth water inlet and a fifth water inlet. The mixed liquid enters the pumping module from the pipeline module through the fourth water inlet, and flows out from the fifth water inlet after being pumped by the pumping module.

[0012] Furthermore, the controller is electrically connected to the first motor, the second motor, the third motor, and the fourth motor and controls the start and stop of the four motors.

[0013] Optionally, the number of proportional control modules is three, and the number of stroke adjustment mechanisms is two.

[0014] Preferably, the first motor, the second motor, the third motor, and the fourth motor are servo motors.

[0015] Furthermore, this disclosure also provides a method of using the above-mentioned proportional pump, the method comprising the following steps: The following work requirements are specified: Mix liquid A and liquid B with... m:n The components are mixed in the correct proportions and then sprayed. The proportion control module divides liquid A and liquid B into the correct proportions and delivers them to the mixing module through the pipeline module. The mixing module thoroughly mixes the liquids and then delivers them to the pumping module. The pumping module then operates to complete the spraying process. The specific workflow is as follows: S1: First, when the proportional control module is in the starting position, the first valve and the second valve are closed, the two stroke adjustment mechanisms are symmetrically distributed on the base, the first connecting rod and the second connecting rod are configured at a 180° angle, at this time the stepped shaft and the motor support are at maximum distance, and the first valves of the two stroke adjustment mechanisms are opened at the same time. The two first valves are respectively connected to liquid A and liquid B. It is now stipulated that the first valve on the stroke adjustment mechanism at position one is connected to the storage tank of liquid A, and the first valve on the stroke adjustment mechanism at position two is connected to the storage tank of liquid B. S2: Next, start the two first motors. The first motors drive the lead screw to rotate through the stepped shaft. The rotation direction is shown in the figure. This drives the motor support seat connected to it to move, and further drives the third link to move. The third link drives the slider to move. The slider moves linearly along the axial direction of the slide rail under the restriction of the slide rail. At the same time, it drives the piston rod to move linearly in the piston cylinder. The pressure difference draws liquid A and liquid B into the piston cylinder at position one and position two, respectively. When the lead screw moves to a plane perpendicular to the base, the two first motors are turned off. At this time, the first valve and the second valve remain in their original state. S3: Then start the two second motors. The second motors drive the lead screw to move. The lead screw, in the threaded engagement with the stepped shaft, drives the motor support to move closer to the stepped shaft. During this process, the slider is pushed forward a certain distance by the third connecting rod and pushes some liquid to the storage tank. Then, the second motors are turned off and the two first valves are closed. S4: Next, start the two second valves and start the two first motors again. The rotation direction of the first motor shaft is opposite to that of the first start. The working principle is the same as that of the first start of the first motor. When the first connecting rod and the second connecting rod are configured at a 180° angle, the two first motors are shut off. During this process, the liquid in the piston cylinder is pushed to the pipeline module and pre-mixed in the pipeline module to form a premixed liquid. S5: Immediately afterward, close the two second water valves and open the first water valve. Then, start the second motor. The second motor drives the lead screw to move. Under the threaded engagement with the stepped shaft, the lead screw drives the motor support away from the stepped shaft. When the stepped shaft and the motor support reach the maximum distance, that is, when the first connecting rod and the second connecting rod are at a 180° angle, the piston rod pushes the remaining solution in the piston cylinder back to the storage tank mentioned in step S1. The proportional control module ends the first working process. Then, the proportional control module continues to repeat the above process. S6: The premixed liquid in step S4 is further transported to the stirring module through the pipeline module for further stirring and mixing. The third motor is started, and the third motor drives the sun gear to move. The sun gear drives the three planetary gears to move within the limit groove through meshing connection. The three planetary gears rotate around the sun gear while rotating on their own axis, and at the same time drive the stirring blades to move, so as to fully stir and mix the premixed liquid to form a mixed liquid. The mixing work is completed, and the liquid enters the pipeline module through the third water inlet, and is then transported to the pumping module. S7: After the mixed liquid in step S6 enters the pumping module through the fourth water inlet, the fourth motor is started. The fourth motor drives the first pumping gear to rotate, and through meshing, drives the second pumping gear to rotate, thereby driving the mixed liquid to move and finally flowing out from the fifth water inlet to complete the spraying.

[0016] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows: Fixed connection: refers to a mechanical connection method in which parts or components are fixed in place without any relative movement. It is divided into two types: detachable and non-detachable. The welding mentioned in this article belongs to the category of non-detachable fixed connections.

[0017] Sliding connection: A mechanical connection in which two or more components are joined by relatively sliding contact surfaces, allowing them to move or rotate smoothly relative to each other in one or more directions, while transmitting force, motion or load.

[0018] Meshing link: a mechanical connection method that achieves precise transmission of power, motion or position through the interlocking and embedding of the surfaces of rigid or semi-rigid components (teeth, grooves, threads, etc.). The meshing link discussed in this article refers to the meshing between gears.

[0019] Rotary connection: refers to a mechanical connection method that connects two rotating parts together through parts such as bearings or bushings.

[0020] The beneficial effects of this disclosure are: 1. A stroke adjustment mechanism with dual motors working together: The first motor drives the slider to reciprocate linearly along the slide rail through a stepped shaft and a linkage mechanism. The second motor precisely adjusts the axial distance between the motor support and the stepped shaft through the cooperation of the lead screw and the threaded hole. This solves the problem mentioned in the background technology that "the proportional adjustment method is outdated, requires manual operation and cannot be dynamically adjusted during operation". It realizes real-time and high-precision proportional adjustment during operation, with fast adjustment response and high precision, which significantly improves the equipment's adaptability to changes in working conditions.

[0021] 2. An independently set stirring module is adopted: the inner side of the stirring tank is equipped with a guide plate, and a planetary carrier is installed above the top cover plate. The third motor drives the sun gear, which meshes with three centrally symmetrically distributed planetary gears. The planetary gears mesh with internal gears, and stirring blades are fixedly connected below the inner ring of the planetary gears. This solves the problem mentioned in the background technology that "the mixing method is singular, relying only on pipeline flow or simple merging, and the mixing uniformity is difficult to guarantee", and realizes full active stirring of premixed liquid.

[0022] 3. An independently configured gear pump module is adopted: the fourth motor drives the first pumping gear, the first pumping gear meshes with the second pumping gear, and the two gears rotate in opposite directions to achieve continuous delivery, which solves the problem of "periodic pulsation and poor output stability in plunger reciprocating pumping" mentioned in the background technology, and realizes continuous and stable voltage output without pulsation.

[0023] 4. The proportional control module, stirring module and pumping module are connected by a pipeline module in a split layout: the three modules are independently set on the support frame. When any module is damaged or needs to be upgraded, only the corresponding module needs to be disassembled. This solves the problem mentioned in the background technology of "high functional integration, high integration of various components, and maintenance requires overall disassembly", and realizes independent replacement and rapid maintenance of each module. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the proportional control module of the present invention; Figure 3 This is an exploded view of the stroke adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the stepped shaft structure of the present invention; Figure 5This is a schematic diagram of the motor support structure of the present invention; Figure 6 This is an exploded view of the stirring module of the present invention; Figure 7 This is a cross-sectional view of the mixing tank of the present invention; Figure 8 This is an exploded view of the pumping module of the present invention; Figure 9 This is a schematic diagram of the workflow of the proportional control module of the present invention; Figure 10 This is a schematic diagram illustrating the working principle of the proportional control module of the present invention.

[0026] In the diagram: 1. Support frame; 2. Proportional control module; 3. Mixing module; 4. Pumping module; 5. Piping module; 6. Controller mounting box; 7. Base; 8. Stroke adjustment mechanism; 9. First motor; 10. Stepped shaft; 11. First connecting rod; 12. Second connecting rod; 13. Motor support seat; 14. Second motor; 15. Lead screw; 16. Third connecting rod; 17. Slider; 18. Piston rod; 19. Fixing block; 20. Piston cylinder; 21. First valve; 22. Second valve; 23. Top cover plate; 24. Sealing cover; 25. Planetary carrier; 26. Third motor; 27. Sun gear; 28. Planetary gears; 29. 30. Internal gear; 31. Agitator blade; 32. Agitator tank; 33. Fourth motor; 34. First end cover plate; 35. First pumping gear; 36. Second pumping gear; 37. Second end cover plate; 38. Controller; 100. First fixing groove; 101. Slide rail; 102. Second fixing groove; 103. First connecting surface; 104. Threaded hole; 105. Second connecting surface; 106. Third connecting surface; 107. Pipe interface; 108. Third water inlet; 109. Guide plate; 110. Limiting groove; 111. First water inlet; 112. Second water inlet; 113. Fourth water inlet; 114. Fifth water inlet. Detailed Implementation

[0027] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0029] Examples of the embodiments are shown in the accompanying drawings, wherein the terms "a" and "b" are used to distinguish identical or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0030] As an optimized technical solution of the present invention, please refer to Figure 1 A proportional pump includes a support frame 1, on which a proportional control module 2, a stirring module 3, and a pumping module 4 are sequentially mounted. At least one proportional control module 2 is mounted on the support frame 1. A controller mounting box 6 is fixedly installed on the rear side of the support frame 1, and a controller 37 is detachably installed inside the controller mounting box 6. The proportional control module 2, the stirring module 3, and the pumping module 4 are connected via a pipeline module 5. The proportional control module 2 is used to complete the quantitative proportional distribution of multi-component liquids before the liquid enters the pipeline module 5. The proportioned liquid is then transported to the stirring module 3 via the pipeline module. The stirring module 3 has a closed stirring chamber structure for further mixing of the liquid. After mixing, the liquid is further transported to the pumping module 4 via the pipeline module 5, where it is pressure-stabilized and pumped outwards.

[0031] It should be noted that the flow rate ratio adjustment and distribution process of different component liquids is completed inside the ratio control module 2, and then output to the pipeline module 5. After initial premixing in the pipeline module 5, it is then output to the stirring module 3. The pipeline module 5 only serves the function of closed-loop fluid transportation and initial premixing. It does not have any structure for adjusting the liquid ratio. The ratio of different liquids does not change after entering the pipeline module 5. The pipeline module 5 is a conventional fluid transportation pipeline component in the field, used to transport mixed liquids at different stages. Its specific pipeline layout can be freely selected according to the on-site installation requirements.

[0032] As an optimized technical solution of the present invention, please refer to Figures 2 to 5The proportional control module 2 is provided with a base 7, and the base 7 is provided with no less than two stroke adjustment mechanisms 8. The number of stroke adjustment mechanisms 8 is determined by the number of liquid types being dispensed. Each stroke adjustment mechanism 8 includes a first motor 9, a stepped shaft 10, a first connecting rod 11, a second connecting rod 12, a motor support 13, a second motor 14, a lead screw 15, a third connecting rod 16, a slider 17, a piston rod 18, a fixing block 19, a piston cylinder 20, a first valve 21, and a second valve 22. The first motor 9 is fixedly installed in a first fixing groove 100 on the base 7. A stepped shaft 10 is fixedly connected to the rotating shaft. A first connecting rod 11 is rotatably connected to the first connecting surface 103 of the stepped shaft 10. A second connecting rod 12 is rotatably connected to the other end of the first connecting rod 11. The first connecting rod 11 and the second connecting rod 12 are connected by a pin. The other end of the second connecting rod 12 is rotatably connected to the second connecting surface 105 of the motor support 13. A second motor 14 is fixedly connected to the motor support 13. A lead screw 15 is fixedly connected to the rotating shaft of the second motor 14. The lead screw 15 is threadedly connected to the screw on the stepped shaft 10. A third connecting rod 16 is rotatably connected to the third connecting surface 106 of the motor support 13, and the other end of the third connecting rod 16 is rotatably connected to the slider 17. The slider 17 is slidably connected to the slide rail 101 on the base 7 and can move linearly along the slide rail 101. A piston rod 18 is fixedly installed on the slider 17, and a fixing block 19 is fixedly connected to the piston rod 18. The fixing block 19 is also slidably connected to the slide rail 101 on the base 7. The piston rod 18 is slidably connected to the piston cylinder 20. The piston cylinder 20 is fixedly connected to the second fixing groove 102 of the base 7. The end of the piston cylinder 20 is provided with a first water inlet 111. The cylindrical surface of the piston cylinder 20 is provided with a second water inlet 112 near the first water inlet 111. The second water inlet 112 is provided with a first valve 21. The first water inlet 111 is provided with a second valve 22. The second valve 22 is connected to the pipe module 5. It should be noted that the first connecting rod 11 and the second connecting rod 12 are both auxiliary connecting rods, used to share the load of the lead screw 15, and can also be used to balance the inertial force and reduce equipment vibration.

[0033] As an optimized technical solution of the present invention, please refer to Figure 1 and Figure 2 The number of proportional control modules 2 is three, and the number of stroke adjustment mechanisms 8 is two.

[0034] In such Figure 2 In the illustrated embodiment, the base 7 is provided with two stroke adjustment mechanisms 8. Please refer to [link / reference]. Figure 3 and Figure 10When the proportional control module 2 is in the starting position, the first valve 21 and the second valve 22 are closed. The two stroke adjustment mechanisms 8 are symmetrically distributed on the base 7. The first connecting rod 11 and the second connecting rod 12 are configured at a 180° angle. At this time, the stepped shaft 10 and the motor support 13 maintain the maximum distance. Simultaneously, the first valves 21 of the two stroke adjustment mechanisms 8 are opened, and liquid A and liquid B are respectively introduced into the two first valves 21. It is now stipulated that the first valve 21 on the stroke adjustment mechanism 8 at position one is connected to the storage tank of liquid A, and the first valve 21 on the stroke adjustment mechanism 8 at position two is connected to the storage tank of liquid B. The two first motors 9 are started. The first motors 9 drive the lead screw 15 to rotate through the stepped shaft 10. The rotation direction is as follows. Figure 9 As shown, this drives the movement of the motor support 13 connected to it, which in turn drives the movement of the third link 16. The third link 16 drives the slider 17 to move. The slider 17 moves linearly along the axial direction of the slide rail 101 under the constraint of the slide rail 101, and at the same time drives the piston rod 18 to move linearly in the piston cylinder 20. Through the air pressure difference, the A liquid and the B liquid are respectively drawn into the piston cylinder 20 at position one and the piston cylinder 20 at position two. When the lead screw 15 moves to a plane perpendicular to the base 7, the two first motors 9 are turned off. At this time, the stroke adjustment mechanism 8 is in the position shown. Figure 9 As shown in the first working position, the first valve 21 remains open, and the second valve 22 remains closed. Figure 10 As shown, under this working condition, the straight-line distance between the stepped shaft 10 and the motor support 13 is now defined as: l 1 The effective working length of the third link 16, that is, the straight-line distance between the two rotational connection centers at both ends of the third link 16, is l 2 The angle between the second link 16 and the horizontal plane is... θ 1 The distance from the rotation center of the connection between the slider 17 and the third connecting rod 16 to the end of the piston rod is... l 3 The cross-sectional area of ​​the piston cylinder 20 is S Now, it is required that liquid A and liquid B be in accordance with... m:n The proportions are mixed, and the two second motors 14 are started. The second motors 14 drive the lead screw 15 to move. The lead screw 15, in its threaded engagement with the stepped shaft 10, drives the motor support 13 closer to the stepped shaft 10. After adjustment, the stroke adjustment mechanism 8 is in the position as follows: Figure 9The second working position is shown. Then, the second motor 14 is turned off. At this point, under this condition, the angle between the second connecting rod 16 in the adjusting mechanism 8 at position one and the horizontal plane is... θ 2 The angle between the second link 16 in the adjustment mechanism 8 at position two and the horizontal plane is... θ 3 Under ideal working conditions, without considering frictional resistance and other influencing factors, during this adjustment process, the distance that the slider 17 in position one advances under the push of the second connecting rod 16 in position one is: l 2 cosθ 2 -l 2 cosθ 1 The distance that the slider 17 at position two advances under the push of the second connecting rod 16 at position two is: l 2 cosθ 3 -l 2 cosθ 1 And some of the liquid is squeezed back into the storage tank, then the two first valves 21 are closed and the two second valves 22 are activated. Then the two first motors 9 are activated again, with the rotation direction of the shafts of the first motors 9 opposite to that of the first activation. Figure 9 As shown in the second working position, the working principle is the same as when the first motor 9 is started for the first time. When the first connecting rod 11 and the second connecting rod 12 are configured at a 180° angle, both first motors 9 are turned off. At this time, the stroke adjustment mechanism 8 is in the following position. Figure 9 In the third working position shown, under this condition, the distance that the slider 17 in the first position drives the piston rod 18 forward under the push of the third connecting rod 16 is: l 2 + l 2 sinθ 2 - l 2 cosθ 2 The volume of liquid A pushed is: ( l 2 + l 2 sinθ 2 - l 2 cosθ 2 ) SThe distance that the slider 17 at position two, driven by the third connecting rod 16, propels the piston rod 18 forward is: l 2 + l 2 sinθ 3 - l 2 cosθ 3 The volume of liquid B being pushed is: ( l 2 + l 2 sinθ 2 - l 2 cosθ 2 ) S Because liquid A and liquid B are in accordance with m:n The proportions of the mixture are such that the following relationship exists: , eliminate S as well as l 2 We can obtain: Therefore, when the stated θ 2 as well as θ 3 When the following relationship is satisfied: To meet the working requirements, the two second water valves 22 are closed, and the first water valve 21 is opened. Then, the second motor 14 is started. The second motor 14 drives the lead screw 15 to move. The lead screw 15, in its threaded engagement with the stepped shaft 10, drives the motor support 13 away from the stepped shaft 10. When the stepped shaft 10 and the motor support 13 reach their maximum distance, i.e., when the first connecting rod 11 and the second connecting rod 12 form a 180° angle, the piston rod 18 pushes the remaining solution in the piston cylinder 20 back to the storage tank. The stroke adjustment mechanism 8 then returns to its original position. Figure 9 As shown in the starting position, the proportional control module 2 ends the first working process, and then the proportional control module 2 continues to repeat the above process. During the process from the second working position to the third working position, the A liquid and B liquid pushed are in accordance with... m:n The liquid enters the pipeline module 5 in a certain proportion and meets there for initial premixing, forming a premixed liquid, which is then further transported to the stirring module 3 for further stirring and mixing.

[0035] As an optimized technical solution of the present invention, please refer to Figure 6 and Figure 7The stirring module 3 includes: a top cover plate 23, a sealing cover 24, a planetary carrier 25, a third motor 26, a sun gear 27, planetary gears 28, an internal gear 29, stirring blades 30, and a stirring tank 31. A third water inlet 108 is provided at the bottom of the stirring tank 31. Several guide plates 109 are provided on the inner side of the stirring tank 31 to balance the flow velocity, reduce local velocity differences, and reduce fluid impact and water hammer effect. The top cover plate 23 is detachably connected to the opening at the top of the stirring tank 31. Three centered... The system includes three symmetrically distributed limiting grooves 110 and a pipe interface 107. The pipe module 5 is connected to the stirring module 3 via the pipe interface 107 and supplies premixed liquid to the stirring module 3 through the pipe interface 107. A third motor 26 is fixedly installed on the top cover plate 23. The shaft of the third motor 26 passes through the top cover plate 23 and is fixedly connected to the sun gear 27. The sun gear 27 is meshed with three centrally symmetrically distributed planetary gears 28. A planet carrier 25 is rotatably connected above the top cover plate 23. It should be noted that the planetary carrier 25... The planetary carrier 25 does not contact the third motor 26. The three ends of the planetary carrier 25 pass through the three limiting grooves 110 and are rotatably connected to the planetary gears 28. The planetary carrier 25 mainly provides support and positioning for the three planetary gears 28. The three planetary gears 28 are meshed with an internal gear 29. The outer ring of the internal gear 29 is fixedly connected to the inner side of the top cover plate 23. A stirring blade 30 is fixedly connected below the inner ring of the three planetary gears 28. A sealing cover 24 is detachably connected to the top of the top cover plate 23, thereby ensuring the entire... The working environment of the stirring module 3 is sealed. During operation, the third motor 26 is started, which drives the sun gear 27 to move. The sun gear 27 drives the three planetary gears 28 to move within the limit groove 110 through meshing connection. The three planetary gears 28 rotate around the sun gear 27 while rotating on their own axis, and at the same time drive the stirring blade 30 to move, so as to fully stir and mix the premixed liquid to form a mixed liquid, which enters the pipeline module 5 through the third water inlet 108 and is then transported to the pumping module 4.

[0036] As an optimized technical solution of the present invention, please refer to Figure 8The pumping module 4 includes a fourth motor 32, a first end cover plate 33, a first pumping gear 34, a second pumping gear 35, and a second end cover plate 36. The fourth motor 32 is fixedly mounted on the first end cover plate 33. The first pumping gear 34 is fixedly connected to the shaft of the fourth motor 32. The first pumping gear 34 has a meshing second pumping gear 35. The second pumping gear 35 is rotatably connected to the first end cover plate 33 via bearings. The first end cover plate 33 has a detachable second end cover plate 36. Furthermore, the first end cover plate 33 also has a fourth water inlet 113 and a fifth water inlet 114. The mixing... Liquid enters the pumping module 4 from the pipeline module through the fourth inlet 113, and after being pumped by the pumping module 4, flows out from the fifth inlet 114. Unloading grooves are provided on the inner sides of the first end cover 33 and the second end cover 36 to eliminate oil trapping caused by gear meshing and reduce vibration and noise. The unloading grooves adopt a known symmetrical arrangement structure, and the groove width and location are conventionally designed according to gear parameters, representing a mature structure in the field. During operation, when the mixed liquid enters the pumping module 4 from the fourth inlet 113, the fourth motor 32 is started. The fourth motor 32 drives the first pumping gear 34 to rotate, from... Figure 8 The direction of rotation, as indicated by the arrow, is clockwise. Through meshing, it drives the second pumping gear 35 to rotate, causing the mixed liquid to move and eventually flow out from the fifth water inlet 114, thus completing the operation.

[0037] As an optimized technical solution of the present invention, please refer to Figure 1 The controller 37 is electrically connected to the first motor 9, the second motor 14, the third motor 26 and the fourth motor 32 and controls the start and stop of the four motors.

[0038] The invention relates to a proportional pump, the working process of which is as follows: First, when the proportional control module 2 is in the starting position, the first valve 21 and the second valve 22 are in the closed state, the two stroke adjustment mechanisms 8 are symmetrically distributed on the base 7, the first connecting rod 11 and the second connecting rod 12 are configured at a 180° angle, at this time the stepped shaft 10 and the motor support seat 13 maintain the maximum distance, and at the same time the first valve 21 of the two stroke adjustment mechanisms 8 is opened, the two first valves 21 are respectively connected to liquid A and liquid B. It is now specified that the first valve 21 on the stroke adjustment mechanism 8 at position one is connected to the storage tank of liquid A, and the first valve 21 on the stroke adjustment mechanism 8 at position two is connected to the storage tank of liquid B. Next, the two first motors 9 are started. The first motors 9 drive the lead screw 15 to rotate via the stepped shaft 10, and the rotation direction is as follows: Figure 9As shown, this drives the movement of the motor support 13 connected to it, which in turn drives the movement of the third link 16. The third link 16 drives the slider 17 to move. The slider 17 moves linearly along the axial direction of the slide rail 101 under the restriction of the slide rail 101, and at the same time drives the piston rod 18 to move linearly in the piston cylinder 20. Through the air pressure difference, the A liquid and the B liquid are respectively drawn into the piston cylinder 20 at position one and the piston cylinder 20 at position two. When the lead screw 15 moves to the plane perpendicular to the base 7, the two first motors 9 are closed. At this time, the first valve 21 and the second valve 22 still maintain their original state. Then, the two second motors 14 are started, and the second motors 14 drive the lead screw 15 to move. The lead screw 15, in the threaded engagement with the stepped shaft 10, drives the motor support 13 to approach the stepped shaft 10. During this process, the slider 17 is pushed forward a certain distance by the third connecting rod 16 and pushes some liquid to the storage tank. Then, the second motors 14 are turned off and the two first valves 21 are closed. Next, the two second valves 22 are activated and the two first motors 9 are activated again. The rotation direction of the shaft of the first motor 9 is opposite to that of the first activation. The working principle is the same as that of the first activation of the first motor 9. When the first connecting rod 11 and the second connecting rod 12 are configured at a 180° angle, the two first motors 9 are shut off. During this process, the liquid in the piston cylinder 20 is pushed to the pipeline module 5 and pre-mixed in the pipeline module 5 to form a premixed liquid. Next, the two second water valves 22 are closed and the first water valve 21 is opened. Then, the second motor 14 is started. The second motor 14 drives the lead screw 15 to move. The lead screw 15, in the threaded engagement with the stepped shaft 10, drives the motor support 13 away from the stepped shaft 10. When the stepped shaft 10 and the motor support 13 reach the maximum distance, that is, when the first connecting rod 11 and the second connecting rod 12 are at a 180° angle, the piston rod 18 pushes the remaining solution in the piston cylinder 20 back to the storage tank. The proportional control module 2 ends the first working process. Then, the proportional control module 2 continues to repeat the above process. The premixed liquid is further transported to the stirring module 3 through the pipeline module 5 for further stirring and mixing. The third motor 26 is started, which drives the sun gear 27 to move. The sun gear 27 drives the three planetary gears 28 to move within the limit groove 110 through meshing connection. The three planetary gears 28 rotate around the sun gear 27 while rotating on their own axis, and at the same time drive the stirring blade 30 to move, so as to fully stir and mix the premixed liquid to form a mixed liquid. The mixing work is completed, and the liquid enters the pipeline module 5 through the third water inlet 108, and is then transported to the pumping module 4. After the above-mentioned mixed liquid enters the pumping module 4 through the fourth water inlet 113, the fourth motor 32 is started. The fourth motor 32 drives the first pumping gear 34 to rotate, and through meshing, drives the second pumping gear 35 to rotate, thereby driving the mixed liquid to move. Finally, it flows out from the fifth water inlet 114, completing the spraying.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A proportional pump, comprising a support frame (1), characterized in that, The support frame (1) is provided with a proportional control module (2), a stirring module (3) and a pumping module (4) in sequence. At least one proportional control module (2) is provided on the support frame (1). A controller mounting box (6) is fixedly installed on the rear side of the support frame (1). A controller (37) is detachably installed in the controller mounting box (6). The proportional control module (2), the stirring module (3) and the pumping module (4) are connected through a pipeline module (5). The proportional control module (2) is used to complete the quantitative proportional distribution of multi-component liquid before the liquid enters the pipeline module (5). The liquid after proportioning is transported to the stirring module (3) through the pipeline module. The stirring module (3) is a closed stirring chamber structure to further mix the liquid. After mixing, the liquid is further transported to the pumping module (4) through the pipeline module (5) and pumped out by the pumping module (4) with stable pressure.

2. A proportional pump according to claim 1, characterized in that: The proportional control module (2) is provided with a base (7), and the base (7) is provided with no less than two stroke adjustment mechanisms (8). The number of stroke adjustment mechanisms (8) is determined by the number of liquid types being dispensed. Each stroke adjustment mechanism (8) includes a first motor (9), a stepped shaft (10), a first connecting rod (11), a second connecting rod (12), a motor support (13), a second motor (14), a lead screw (15), a third connecting rod (16), a slider (17), a piston rod (18), a fixed block (19), a piston cylinder (20), a first valve (21), and a second valve (22). The first motor (9) is fixed. A first fixing groove (100) is fixedly installed on the base (7). A stepped shaft (10) is fixedly connected to the rotating shaft of the first motor (9). A first connecting rod (11) is rotatably connected to the first connecting surface (103) of the stepped shaft (10). A second connecting rod (12) is rotatably connected to the other end of the first connecting rod (11). The other end of the second connecting rod (12) is rotatably connected to the second connecting surface (105) of the motor support (13). A second motor (14) is fixedly connected to the motor support (13). A lead screw (15) is fixedly connected to the rotating shaft of the second motor (14). The lead screw (15) is threaded into the threaded hole (104) on the stepped shaft (10). The third connecting rod (16) is rotatably connected to the third connecting surface (106) of the motor support (13). The other end of the third connecting rod (16) is rotatably connected to the slider (17). The slider (17) is slidably connected to the slide rail (101) on the base (7) and can move linearly along the slide rail (101). A piston rod (18) is fixedly installed on the slider (17). A fixed block (19) is fixedly connected to the piston rod (18). The fixed block (19) is also slidably connected to the piston rod (18). On the slide rail (101) on the base (7), the piston rod (18) is slidably connected to the piston cylinder (20), the piston cylinder (20) is fixedly connected to the second fixing groove (102) of the base (7), the end of the piston cylinder (20) is provided with a first water inlet (111), the cylindrical surface of the piston cylinder (20) is provided with a second water inlet (112) near the first water inlet (111), the second water inlet (112) is provided with a first valve (21), the first water inlet (111) is provided with a second valve (22), and the second valve (22) is connected to the pipe module (5).

3. A proportional pump according to claim 2, characterized in that: The stirring module (3) includes: a top cover plate (23), a sealing cover (24), a planetary carrier (25), a third motor (26), a sun gear (27), a planetary gear (28), an internal gear (29), stirring blades (30), and a stirring tank (31). The stirring tank (31) has a third water inlet (108) at the bottom and several guide plates (109) on the inner side of the stirring tank (31) to balance the flow velocity, reduce local flow velocity differences, and reduce fluid impact and water hammer effect. The top cover plate (23) is detachably connected to the opening at the top of the stirring tank (31). The top cover plate (23) has three centrally symmetrically distributed limiting grooves (110) and a pipeline interface (107) at the top. The pipeline module (5) is connected to the stirring module (3) through the pipeline interface (107) and delivers premixed liquid to the stirring module (3) through the pipeline interface (107). The top cover plate (23) is fixedly installed with The third motor (26) has its shaft passing through the top cover plate (23) and fixedly connected to the sun gear (27). The sun gear (27) is meshed with three centrally symmetrically distributed planetary gears (28). A planet carrier (25) is rotatably connected above the top cover plate (23). It should be noted that the planet carrier (25) does not contact the third motor (26). The three ends of the planet carrier (25) pass through the three limiting grooves (110) respectively and are rotatably connected to the planetary gears (28). The planet carrier (25) mainly provides support and positioning for the three planetary gears (28). The three planetary gears (28) are meshed with an internal gear (29). The outer ring of the internal gear (29) is fixedly connected to the inner side of the top cover plate (23). A stirring blade (30) is fixedly connected below the inner ring of the three planetary gears (28). A sealing cover (24) is detachably connected above the top cover plate (23).

4. A proportional pump according to claim 3, characterized in that: The pumping module (4) includes a fourth motor (32), a first end cover plate (33), a first pumping gear (34), a second pumping gear (35), and a second end cover plate (36). The fourth motor (32) is fixedly installed on the first end cover plate (33). The first pumping gear (34) is fixedly connected to the shaft of the fourth motor (32). The first pumping gear (34) is provided with a meshing second pumping gear (35). The second pumping gear (35) is rotatably connected to the first end cover plate (33) through a bearing. The first end cover plate (33) is provided with a detachable second end cover plate (36). In addition, the first end cover plate (33) is also provided with a fourth water inlet (113) and a fifth water inlet (114). The mixed liquid enters the pumping module (4) from the pipeline module through the fourth water inlet (113) and flows out from the fifth water inlet (114) after being pumped by the pumping module (4).

5. A proportional pump according to claim 4, characterized in that: The controller (37) is electrically connected to the first motor (9), the second motor (14), the third motor (26) and the fourth motor (32) and controls the start and stop of the four motors.

6. The proportional pump according to any one of claims 1-5, characterized in that, The number of proportional control modules (2) is three, and the number of stroke adjustment mechanisms (8) is two.

7. A method of using a proportional pump, characterized in that: This method is applied to a proportional pump according to claim 6, and the method of use includes the following steps: The following work requirements are specified: Mix liquid A and liquid B with... m:n The liquids are mixed in the correct proportions and then sprayed. The proportion control module (2) divides the liquid A and liquid B into the correct proportions and transports them to the stirring module (3) through the pipeline module (5). The stirring module (3) fully mixes the liquids and then transports them to the pumping module (4). The pumping module (4) then operates to complete the spraying process. The specific workflow is as follows: S1: First, when the proportional control module (2) is in the starting position, the first valve (21) and the second valve (22) are in the closed state, and the two stroke adjustment mechanisms (8) are symmetrically distributed on the base (7). The first connecting rod (11) and the second connecting rod (12) are configured at a 180° angle. At this time, the stepped shaft (10) and the motor support (13) maintain the maximum distance. At the same time, the first valve (21) of the two stroke adjustment mechanisms (8) is opened. The two first valves (21) are respectively connected to liquid A and liquid B. It is now stipulated that the first valve (21) on the stroke adjustment mechanism (8) at position one is connected to the storage tank of liquid A, and the first valve (21) on the stroke adjustment mechanism (8) at position two is connected to the storage tank of liquid B. S2: Then start the two first motors (9). The first motors (9) drive the lead screw (15) to rotate through the stepped shaft (10). The rotation direction is shown in Figure (9). This drives the motor support (13) connected to it to move, and further drives the third link (16) to move. The third link (16) drives the slider (17) to move. The slider (17) moves linearly along the axial direction of the slide rail (101) under the restriction of the slide rail (101). At the same time, it drives the piston rod (18) to move linearly in the piston cylinder (20). Through the air pressure difference, the A liquid and the B liquid are respectively sucked into the piston cylinder (20) at position one and the piston cylinder (20) at position two. When the lead screw (15) moves to the plane perpendicular to the base (7), the two first motors (9) are closed. At this time, the first valve (21) and the second valve (22) remain in their original state. S3: Then start the two second motors (14), the second motors (14) drive the lead screw (15) to move, the lead screw (15) drives the motor support (13) to approach the step shaft (10) under the threaded engagement with the step shaft (10), the slider (17) is pushed forward a certain distance by the third link (16) in this process, and pushes part of the liquid to the storage tank, then turn off the second motor (14) and close the two first valves (21). S4: Then start the two second valves (22) and start the two first motors (9) again. The rotation direction of the shaft of the first motor (9) is opposite to that of the first start. The working principle is the same as that of the first start of the first motor (9). When the first connecting rod (11) and the second connecting rod (12) are configured at a 180° angle, the two first motors (9) are shut off. During this process, the liquid in the piston cylinder (20) is pushed to the pipeline module (5) and pre-mixed in the pipeline module (5) to form a premixed liquid. S5: Immediately afterward, close the two second water valves (22) and open the first water valve (21). Then start the second motor (14). The second motor (14) drives the lead screw (15) to move. The lead screw (15) drives the motor support (13) away from the stepped shaft (10) under the threaded engagement with the stepped shaft (10). When the stepped shaft (10) and the motor support (13) reach the maximum distance, that is, when the first connecting rod (11) and the second connecting rod (12) are at a 180° angle, the piston rod (18) pushes the remaining solution in the piston cylinder (20) back to the storage tank mentioned in step S1. The proportional control module (2) ends the first working process. Then the proportional control module (2) continues to repeat the above process. S6: The premixed liquid in step S4 is further transported to the stirring module (3) through the pipeline module (5) for further stirring and mixing. The third motor (26) is started. The third motor (26) drives the sun gear (27) to move. The sun gear (27) drives the three planetary gears (28) to move within the limit groove (110) through meshing connection. The three planetary gears (28) rotate around the sun gear (27) while rotating on their own axis. At the same time, they drive the stirring blade (30) to move, fully stirring and mixing the premixed liquid to form a mixed liquid. The mixing work is completed, and the liquid enters the pipeline module (5) through the third water inlet (108) and is then transported to the pumping module (4). S7: After the mixed liquid in step S6 enters the pumping module (4) through the fourth water inlet (113), the fourth motor (32) is started. The fourth motor (32) drives the first pumping gear (34) to rotate, and drives the second pumping gear (35) to rotate through meshing, thereby driving the mixed liquid to move and finally flowing out from the fifth water inlet (114) to complete the spraying.

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