A pneumatic pump

Abstract

The utility model relates to pump technical field, concretely relates to a kind of pneumatic pump, comprising: pump body, the front and rear sides of pump body are respectively fixedly connected with liquid outlet and be provided with concentration detection mechanism, the left and right sides of pump body are respectively fixedly connected with double-port switching valve and pneumatic drive device;Slow-flow mechanism, slow-flow mechanism includes the slow-flow bucket of fixed connection on the upper end of pump body, the inner top of slow-flow bucket is connected with input pipe, and the top of shunt is provided with buffer assembly;Steady flow mechanism, steady flow mechanism includes the first steady flow disc of fixed connection in the inner wall of slow-flow bucket below shunt, concentration detection mechanism includes the square box of fixed connection in the side of pump body. Through slow-flow mechanism shunt and buffer assembly, the slow-flow effect of different concentration liquid into pneumatic pump can be realized, the stability of the flow rate of the liquid entering pneumatic pump is enhanced, and the pressure fluctuation and oscillation caused by unstable liquid flow speed are reduced.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically to a pneumatic pump. Background Technology

[0002] A pneumatic pump is a device that uses gas pressure to drive liquids for transport. It is commonly used in industrial fields to transport liquids, liquid chemicals, or other fluids. This type of pump uses a pneumatic drive system, and its working principle is based on aerodynamics. By controlling the movement of a pneumatic piston or diaphragm, pressure and flow of liquid are generated in the pump body, thereby realizing the intake and discharge of liquid.

[0003] Pneumatic pumps are typically used to transport liquids of varying concentrations. High-concentration liquids usually have higher viscosity, meaning they experience greater flow resistance. This means that under the same external force, high-concentration liquids will flow at a relatively slower speed because they need to overcome greater viscous resistance. Conversely, low-concentration liquids typically have lower viscosity, so under the same external force (same output power), they usually flow at a faster speed. This results in different flow velocities for liquids of different concentrations entering the pneumatic pump. These different flow velocities cause uneven pressure distribution within the pneumatic pump, affecting the normal operation of the pneumatic system. Meanwhile, when liquids of different concentrations are required to enter the pneumatic pump at the same flow rate, the high-concentration liquid exerts greater resistance on the pneumatic pump during transportation due to the different viscosities (viscosity) of different concentrations. This requires a larger output power to overcome this resistance. Conversely, low-concentration liquids usually have lower viscosity and density, so they exert less resistance on the pneumatic pump during transportation. However, the output power of existing pneumatic pumps is usually uniform. If the same output power is used to drive the pneumatic pump, it will result in the pneumatic pump not being able to provide enough force to effectively push the liquid, leading to insufficient transportation capacity. Insufficient transportation capacity will cause the flow rate of the liquid output by the pneumatic pump to be unstable, with periods of high and low speeds, thus reducing the continuity and stability of liquid transportation. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a pneumatic pump that can effectively solve the problems that the existing technology cannot make liquids of different concentrations enter the pneumatic pump at the same flow rate, and cannot adjust the power of the pneumatic pump according to the concentration of different liquids.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a pneumatic pump, comprising: The pump body has an outlet and a concentration detection mechanism fixedly connected to its front and rear sides, respectively. A dual-port switching valve and a pneumatic drive device are fixedly connected to the left and right sides of the pump body, respectively. A controller is fixedly connected to the top of the pneumatic drive device. The dual-port switching valve has a main port and a secondary port. The flow control mechanism includes a flow control tank fixedly connected to the upper end of the pump body. The top of the flow control tank is connected to an input pipe. A flow divider is slidably connected to the inner wall of the flow control tank below the input pipe. A buffer assembly is provided on the top of the flow divider. A flow stabilizing mechanism, comprising a first flow stabilizing plate fixedly connected to the inner wall of the flow stabilizing tank located below the flow divider, the first flow stabilizing plate having a distance from the flow divider, and a second flow stabilizing plate fixedly connected to the inner wall of the flow stabilizing tank located below the first flow stabilizing plate; The concentration detection mechanism includes a square box fixedly connected to the side of the pump body. A one-way pressure boosting valve and a liquid pressure measuring device are arranged side by side on the top of the square box. An exhaust assembly is provided on the inner wall of the square box near the pneumatic drive device. Square pistons and perforated plates are equidistantly arranged around the inner wall of the square box.

[0006] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. This pneumatic pump, through the flow diverter and buffer assembly in its flow-slowing mechanism, can slow down the flow of liquids of different concentrations entering the pump (when liquids of different concentrations enter the pump through pipes, the difference in viscosity and density causes instability in the liquid flow rate). The buffer assembly first reduces the flow rate of liquids of different concentrations, thus stabilizing the flow rate. This is because the buffer assembly creates different resistances to the liquids of different concentrations as they flow, and this resistance is also reduced through the flow-slowing process. The low liquid flow velocity reduces flow resistance and thus reduces the pressure difference between liquids, making the flow velocity of liquids of different concentrations the same. Then, the flow divider splits the originally converged liquid into multiple outflows. When the liquid is divided into multiple small streams, the flow rate of each stream is smaller than the total flow rate. This can effectively reduce flow fluctuations and make the flow velocity of each stream relatively stable. Stable flow velocity helps the liquid enter the pneumatic pump evenly, enhances the stability of the flow velocity when the liquid enters the pneumatic pump, and reduces pressure fluctuations and oscillations caused by unstable liquid flow velocity.

[0007] 2. This pneumatic pump, through the first and second flow stabilizing discs in the flow stabilizing mechanism, further stabilizes the flow of liquid whose velocity has been stabilized by the slow-flow mechanism. This ensures that the flow rate and pressure (impact force) of the liquid entering the pneumatic pump are consistent. The liquid with its velocity driving the rotation of the rotating column in the first flow stabilizing disc can evenly distribute the liquid pressure and flow rate, making the infusion process smoother and more stable, reducing pulsation and fluctuations in the liquid flow. The slow-flow groove in the second flow stabilizing disc can smooth the pressure fluctuations of the fluid, reducing pressure pulsation of different liquids in the pipeline, and ensuring that the pressure generated when liquids of different concentrations enter the pneumatic pump is consistent. Thus, regardless of changes in liquid concentration, the pressure change after passing through the slow-flow groove is relatively stable, without drastic fluctuations. This maintains a relatively consistent pressure on the infusion pump from different concentrations of liquid, improves the stability of the pneumatic pump during operation, and avoids fluctuations in the infusion rate caused by pressure changes.

[0008] 3. This pneumatic pump, through the gas pressure measurement and exhaust components in the concentration detection mechanism, can detect the concentration of the liquid entering the pump, thereby adjusting the pump's power to ensure a stable liquid flow rate. The gas pressure measurement calculates the pressure required for the liquid to pass through the perforated plate by the piston driven by the pneumatic drive device, thus determining the concentration of the liquid entering the pump. Because liquids of different concentrations have different viscosities, the resistance they encounter when passing through the perforated plate varies. For example, liquids with higher concentrations have greater viscosity and flow resistance, requiring greater pressure to pass through the perforated plate. Therefore, by calculating the pressure required for the pneumatic drive device to push the square piston through the perforated plate, the concentration of the liquid entering the pump can be obtained. This allows for adjusting the pneumatic pump power based on different liquid concentrations, effectively avoiding production interruptions due to insufficient delivery capacity and improving the pump's working efficiency. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall side structure of this utility model; Figure 3 This is a schematic diagram of the cross-section of the flow-retarding mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the flow divider of this utility model; Figure 5 This is a schematic diagram of the structure of the buffer assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the first current stabilizing disk of this utility model; Figure 7 This is a schematic diagram of the structure of the rotating column of this utility model; Figure 8 This is a schematic diagram of the pressure measuring rod of this utility model; Figure 9 This is a schematic diagram of the structure of the second current stabilizer of this utility model; Figure 10 This is a cross-sectional structural diagram of the concentration detection mechanism of this utility model; Figure 11 This is a structural schematic diagram of the cross-section of the liquid pressure measuring device of this utility model; Figure 12 This is a schematic diagram of the exhaust assembly of this utility model.

[0011] Reference numerals: 1. Pump body; 11. Outlet; 12. Dual-port switching valve; 2. Flow stabilizing mechanism; 21. Flow stabilizing tank; 211. First transmission pipe; 212. Second transmission pipe; 22. Input pipe; 23. Diverter; 24. Buffer assembly; 241. Force-bearing column; 242. Diverter ball; 243. Collector shroud; 244. Annular groove; 3. Flow stabilizing mechanism; 31. First flow stabilizing plate; 311. Flow port; 312. Elastic telescopic column; 32. Positioning rod; 321. Rotating column; 322. Inclined plate; 33. Pressure measuring rod; 331. Slide groove; 332. Resistance slide groove; 333. Resistance contact; 334. Fixing base; 335. Spring; 34. Second flow stabilizer; 341, support rod; 342, semi-circular disc; 343, slow flow channel; 35, current sensor; 4, concentration detection mechanism; 41, square box; 411, flow tube; 42, one-way pressure booster valve; 43, liquid pressure measuring device; 431, distance sensor; 432, pressure rod; 433, exhaust port; 434, pneumatic piston; 435, limit rod; 44, exhaust assembly; 441, fixed tube; 442, gas pressure measuring device; 443, diverter tube; 444, coiled tube; 45, square piston; 451, elastic block; 46, wind concentrator; 47, perforated plate; 5, pneumatic drive device; 51, controller; 52, gas delivery pipe. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0013] The present invention will be further described below with reference to the embodiments.

[0014] Example: Refer to Figures 1 to 12 A pneumatic pump, comprising: Pump body 1; The flow control mechanism 2 includes a flow control tank 21 fixedly connected to the upper end of the pump body 1. The inner top of the flow control tank 21 is connected to an input pipe 22. A flow divider 23 is slidably connected to the inner wall of the flow control tank 21 below the input pipe 22. A buffer assembly 24 is provided on the top of the flow divider 23. The flow stabilizing mechanism 3 includes a first flow stabilizing plate 31 fixedly connected to the inner wall of the flow stabilizing tank 21 located below the flow divider 23. The first flow stabilizing plate 31 and the flow divider 23 have a distance between them. A second flow stabilizing plate 34 is fixedly connected to the inner wall of the flow stabilizing tank 21 located below the first flow stabilizing plate 31. The concentration detection mechanism 4 includes a square box 41 fixedly connected to the side of the pump body 1. A one-way pressure boosting valve 42 and a liquid pressure measuring device 43 are arranged side by side on the top of the square box 41. An exhaust assembly 44 is arranged on the inner wall of the square box 41 near the pneumatic drive device 5. Square pistons 45 and perforated plates 47 are arranged equidistantly around the inner wall of the square box 41. The square pistons 45 and perforated plates 47 form a pressure zone, a liquid filling zone and a liquid detection zone in sequence along the length of the square box 41, starting from the exhaust assembly 44.

[0015] When liquid enters the pneumatic pump through the input pipe 22, the flow-slowing mechanism 2 can slow down the flow of liquids of different concentrations entering the pneumatic pump, so that liquids of different concentrations can maintain the same flow velocity when entering the pneumatic pump. The flow-stabilizing mechanism 3 can further stabilize the flow of liquids that have already maintained the same flow velocity, so that the flow rate and pressure of liquids of different concentrations entering the pneumatic pump are consistent. Thus, it is possible to maintain the same flow rate and pressure for liquids of different concentrations entering the pneumatic pump through the input pipe 22. The concentration detection mechanism 4 uses the liquid pressure measuring device 43 to detect the concentration of the liquid that the pneumatic pump is currently required to transmit, and adjusts the power of the pneumatic pump according to the detection results.

[0016] Reference Figures 3 to 4The pump body 1 has an outlet 11 fixedly connected to a concentration detection mechanism 4 on one of its opposite sides. A dual-port switching valve 12 and a pneumatic drive device 5 are fixedly connected to the other opposite sides of the pump body 1. A controller 51 is fixedly connected to the top of the pneumatic drive device 5. The dual-port switching valve 12 has a main port and a secondary port. A first transmission pipe 211 is fixedly connected to the bottom of the outer peripheral surface of the slow-flow tank 21 near the concentration detection mechanism 4. A second transmission pipe 212 is fixedly connected to the bottom of the outer peripheral surface of the slow-flow tank 21 near the dual-port switching valve 12. One end of pipe 212 away from the slow-flow tank 21 is fixedly connected to the main port. The buffer assembly 24 includes a force-bearing column 241 fixedly connected to the center of the top of the diverter 23. A collecting cover 243 is fixedly connected to the outer circumferential surface of the force-bearing column 241. The bottom of the collecting cover 243 has multiple annular grooves 244 with the force-bearing column 241 as the center and the diameter increasing sequentially. Multiple leakage holes are opened on the inner bottom surface of each annular groove 244. A diverting ball 242 is fixedly connected to the top of the force-bearing column 241. Multiple diversion grooves are opened on the spherical annular array of the diverting ball 242.

[0017] When liquid enters the slow-flow tank 21 through the inlet pipe 22, the liquid flow rate is first buffered by the buffer component 24 set in the inlet pipe 22, which means the liquid is processed quickly. This allows liquids of different concentrations to enter the slow-flow tank 21 at the same flow rate, reducing the risk of fluctuations or failures in the performance of the pneumatic pump caused by changes in liquid concentration.

[0018] Reference Figures 3 to 5 A pressure measuring rod 33 is fixedly connected to the center of the inner bottom surface of the first current stabilizing plate 31. The end of the pressure measuring rod 33 away from the first current stabilizing plate 31 is movably inserted into the center of the bottom of the diverter 23. Multiple grooves 331 are arranged in an annular array on the outer periphery of the pressure measuring rod 33. Each groove 331 has a resistor groove 332 inside. Resistor contacts 333 are arranged linearly in the resistor groove 332. Multiple fixing seats 334 are fixedly connected to the annular array on the outer periphery of the pressure measuring rod 33 below the groove 331. A current sensor 35 is movably sleeved on the outer periphery of the pressure measuring rod 33. The current sensor 35 is electrically connected to the controller 51. A sliding rod and a metal ball are provided on the inner periphery of the current sensor 35. The sliding rod is slidably connected to the groove 331, and the metal ball is in contact with the resistor groove 332 and the resistor contacts 333. A spring 335 is fixedly connected to the opposite surface of the multiple fixing seats 334 and the current sensor 35.

[0019] After liquids of different concentrations have their flow rates stabilized by the flow stabilizing mechanism 2, the first flow stabilizing plate 31 in the flow stabilizing mechanism 3, using the positioning rod 32 and the rotating column 321, can reduce the pressure impact force of the liquid flow, so that the pressure of liquids of different concentrations can be maintained at the same level when they enter the pneumatic pump. Maintaining the same pressure ensures that the working conditions of the pneumatic pump remain stable when liquids of different concentrations flow into the pneumatic pump. This reduces the fluctuation or instability of the pneumatic pump performance caused by changes in liquid pressure, and improves the reliability and long-term stability of the equipment.

[0020] Reference Figures 6 to 9 The outer circumferential surface of the pressure measuring rod 33 is movably sleeved with an elastic telescopic column 312. The elastic telescopic column 312 has a hollow structure, and the hollow diameter of the elastic telescopic column 312 is larger than the diameter of the current sensor 35. The two ends of the elastic telescopic column 312 are fixedly connected to the opposite surfaces of the current divider 23 and the first current stabilizing plate 31, respectively. The inner bottom of the first current stabilizing plate 31 has multiple arc-shaped flow ports 311 arranged in a ring array with the pressure measuring rod 33 as the center. At least two sets of positioning rods 32 are arranged inside and outside the inner bottom of the first current stabilizing plate 31. Each set of positioning rods 32 has at least two rods, and the positioning rods 32 in each adjacent set are arranged radially staggered. The outer circumferential surface of each positioning rod 32 is rotatably connected with a rotating column 321. The outer circumferential surface of the rotating column 321 is provided with a fixed groove in a ring. The inside of the fixed groove is fixedly connected with inclined plates 322 in a ring array.

[0021] The inner circumferential surface of the second flow stabilizer 34 is fixedly connected with a ring array of multiple support rods 341. The end of each support rod 341 away from the second flow stabilizer 34 is fixedly connected to a semi-circular disk 342. The outer circular surface of the semi-circular disk 342 is provided with progressively deeper and larger diameter slow-flow grooves 343 in a ring from top to bottom.

[0022] The pressure measuring rod 33 can be adjusted based on the inertia caused by the different pressures of the liquids in contact with the flow control mechanism 2. This causes the flow control mechanism 2 to descend to different degrees. As the flow control mechanism 2 descends, it causes the current sensor 35 to come into contact with different positions of the pressure measuring rod 33. This allows the current sensor 35 to determine whether the concentration of the liquid has changed based on the different pressures and inertia caused by the different liquids. Once the transmitted liquid pressure changes, the position of the current sensor 35 in the pressure measuring rod 33 also changes. The current sensor 35 will then send an abnormal signal to the controller 51, causing the controller 51 to restart the concentration detection mechanism 4 to detect the current liquid concentration.

[0023] Reference Figure 10A flow pipe 411 is fixedly connected to the side of the square box 41 near the two-port switching valve 12. The end of the flow pipe 411 away from the square box 41 is fixedly connected to the auxiliary port. A one-way pressure boosting valve 42 is fixedly connected to the top of the square box 41, and the position of the one-way pressure boosting valve 42 corresponds to the position of the first transmission pipe 211. The one-way pressure boosting valve 42 is electrically connected to the controller 51. The end of the first transmission pipe 211 away from the slow-flow tank 21 is connected to the inside of the square box 41, and the one-way pressure boosting valve 42 is located on the outer circumference of the first transmission pipe 211. A liquid pressure measuring device 43 is fixedly connected to the top of the square box 41 near the one-way pressure boosting valve 42. The center of the top of the liquid pressure measuring device 43 is fixedly connected to... The liquid pressure measuring device 43 has multiple pressure rods 432. Multiple vent holes 433 are evenly distributed in a ring around the pressure rods 432 at the top of the liquid pressure measuring device 43. Two distance sensors 431 are symmetrically fixedly connected to the top of the liquid pressure measuring device 43 and near the vent holes 433. A pneumatic piston 434 is airtightly slidably connected to the inner wall of the liquid pressure measuring device 43. The end of the multiple pressure rods 432 away from the top of the liquid pressure measuring device 43 is fixedly connected to the pneumatic piston 434. A cross-shaped limiting rod 435 is fixedly connected to the inner wall of the liquid pressure measuring device 43 below the pneumatic piston 434. A gas supply pipe 52 is fixedly connected to the side of the pneumatic drive device 5 near the concentration detection mechanism 4.

[0024] After liquids of different concentrations are processed by the slow-flow mechanism 2 and the flow-stabilizing mechanism 3, the dual-port switching valve 12 will close first, allowing the liquid to enter the square box 41 of the concentration detection mechanism 4 through the first transmission pipe 211 for liquid concentration detection. The method for detecting liquid concentration is to calculate the pressure required when the pneumatic drive device 5 pushes the square piston 45 to make the liquid pass through the perforated plate 47, and obtain the concentration of the liquid entering the pneumatic pump.

[0025] Reference Figures 11 to 12 The exhaust assembly 44 includes a fixed pipe 441 fixedly connected to the inner wall of one side of the square box 41. The fixed pipe 441 is fixedly connected to the gas supply pipe 52 at the end away from the pneumatic drive device 5. A gas pressure measuring device 442 is fixedly connected to the side of the fixed pipe 441 facing the square piston 45. Multiple diverter pipes 443 are fixedly connected to the outer circumferential surface of the fixed pipe 441 in an annular array. Multiple ring-shaped pipes 444 with increasing diameter from the inside to the outside are fixedly connected to the outer circumferential surface of each diverter pipe 443. Multiple air holes are evenly opened on the side of the diverter pipes 443 and the ring-shaped pipes 444 facing the square piston 45. The square piston 45 is airtightly slidably connected to the inner wall of the square box 41 near the pneumatic drive device 5. A perforated plate 47 is fixedly connected to the inner wall of the square box 41 near the two-port switching valve 12. The two-port switching valve 12 is electrically connected to the controller 51.

[0026] Four elastic blocks 451 are fixedly connected to the four corners of the square piston 45 and the opposite side of the inner wall of the pneumatic drive device 5. A communication port is opened at the center of the square piston 45. A wind-gathering hood 46 is fixedly connected to the side of the square piston 45 facing the flow pipe 411, and the wind-gathering hood 46 corresponds to the position of the fixing groove.

[0027] The exhaust assembly 44 can evenly distribute the gas delivered by the pneumatic drive device 5 to the square box 41 and then to the square piston 45. The uniform gas force ensures that the square piston 45 is subjected to uniform force, thus making its movement within the square box 41 more stable and avoiding shaking or instability during movement. In order to concentrate the gas discharged by the exhaust assembly 44 onto the square piston 45, a wind concentrator 46 is provided in the square piston 45. The wind concentrator 46 can effectively convert the kinetic energy of the gas into power acting on the square piston 45, thereby improving the efficiency of power transmission.

[0028] The specific operating principle of this embodiment is as follows: Step 1: First, the liquid enters the pump body 1 through the inlet pipe 22. Different concentrations of liquid have different viscosities, densities, and flow characteristics, causing instability in flow velocity during transport. Therefore, a buffer assembly 24 is installed in the inlet pipe 22. Liquids of different concentrations first contact the flow divider ball 242 within the buffer assembly 24. The flow divider ball 242 has a flow-guiding groove on its semi-circular surface. The presence of the flow-guiding groove effectively reduces the occurrence of eddies and turbulence in liquids of different concentrations (because different concentrations of liquid have different viscosities, densities, and flow characteristics, eddies and turbulence are generated during pipeline transport). Eddies and turbulence can lead to… The flow velocity fluctuates and is unstable, so liquids of different concentrations can improve the smoothness of the flow by passing through the diversion channel. Then, liquids of different concentrations will enter the collection shroud 243 along the diversion channel of the diverting ball 242. The collection shroud 243 can effectively collect the liquid flowing out of the diversion channel, preventing the liquid from splashing or spreading during the flow process, and ensuring that the liquid is completely collected in the collection shroud 243. At the same time, the arc-shaped structure of the collection shroud 243 can help maintain the stability of the liquid flow velocity, reduce eddies and turbulence caused by the liquid flow, and further improve the stability of the flow velocity. The liquid entering the collection shroud 243 will enter the diversion component 23 through the annular groove 244 for diversion processing.

[0029] Among them, the diverter 23 can disperse the liquid gathered together by the collecting shroud 243 into multiple outflows. When the liquid is divided into multiple small streams, the flow rate of each stream is smaller than the total flow rate. This can effectively reduce the fluctuation of the flow rate and make the flow rate of each stream relatively stable. This allows liquids of different concentrations to enter the slow-flow tank 21 at the same flow rate, reducing the risk of fluctuations or failures in the performance of the pump body 1 caused by changes in liquid concentration.

[0030] Step 2: When liquids of different concentrations come into contact with the flow-slowing mechanism 2, they typically have different densities. Density is an important indicator of liquid inertia and flow inertia; liquids with higher densities have greater inertia during flow. Therefore, they generate a greater impact force when in contact with the flow-slowing mechanism 2. The flow-slowing mechanism 2 has a pressure measuring rod 33 inserted at the bottom of its diverting component 23. When liquids of different concentrations come into contact with the diverting ball 242, the different concentrations of liquid will exert different pressures (impact forces) on the diverting ball 242 and the collecting shroud 243. The diverting ball 242 and the collecting shroud 243 interact through the force... The column 241 is connected to the shunt 23, so the force-bearing column 241 will transmit the pressure on the shunt ball 242 and the collecting cover 243 to the shunt 23, causing the shunt 23 to descend along the body of the pressure measuring rod 33. As the shunt 23 descends, it also drives the current sensor 35 to descend along the slide groove 331 of the pressure measuring rod 33, causing the current sensor 35 to contact the resistance slide groove 332 at different positions on the body of the pressure measuring rod 33. The resistance slide groove 332 has different currents at different positions of the current sensor 35 (similar to a sliding rheostat). The resistance in the resistance chute 332 gradually increases from top to bottom. Due to the different densities of the liquids at different concentrations, the pressure generated causes the flow-slowing mechanism 2 to decrease to varying degrees. Based on the different pressures and inertia caused by the different liquids, it is determined whether the concentration of the liquid has changed. Once the transmitted liquid pressure changes, the flow divider 23 will push the current sensor 35 to change its position in the pressure measuring rod 33. (The current sensor 35 is equipped with a spring 335, which can contract when the current sensor 35 is subjected to strong pressure; when the pressure decreases, the spring 335...) 35 will cause the current sensor 35 to rise, thereby causing the current sensor 35 to change position in the pressure measuring rod 33 as the pressure applied to it by the shunt 23. The current sensor 35 will send an abnormal signal to the controller 51, thereby causing the controller 51 to restart the concentration detection mechanism 4 and re-detect the current liquid concentration. The elastic telescopic column 312 is elastic (acting in the same way as the spring 335) and can apply a force to the shunt 23, thereby allowing the shunt 23 to slide freely in the pressure measuring rod 33 (when different concentrations produce different pressures).

[0031] In this process, liquids of different concentrations are processed by the diverter 23 and buffer assembly 24 in the flow stabilization mechanism 2 to stabilize their flow rate in the input pipe 22. The liquids then flow into the first flow stabilizing plate 31 in the flow stabilization mechanism 3 through multiple small streams dispersed by the diverter 23. Since the size of the diverter 23 is smaller than that of the first flow stabilizing plate 31, the liquid flowing into the first flow stabilizing plate 31 through the diverter 23 converges from the edge of the first flow stabilizing plate 31 toward the center. When the liquid converges toward the center of the first flow stabilizing plate 31, the impact force generated by the liquid flow will drive the rotating column 321 set in the positioning rod 32 to rotate. The rotation of the rotating column 321 driven by the liquid can help to homogenize the flow rate and pressure of the liquid. Because liquids of different concentrations have different viscosities and densities, this will result in inconsistent flow rates and pressures.

[0032] The reason why liquids of different concentrations produce different pressures is: Liquids of different concentrations have different densities (density is the ratio of the weight to the volume of a liquid), and the inertia and dynamic pressure of a fluid depend on its density. Therefore, when liquids of different concentrations enter pump body 1 at the same flow rate, due to their different densities, the dynamic pressure and impact force they generate inside pump body 1 will also be different.

[0033] The function of the rotating column 321 is to uniformly convert the flow rate and pressure of the liquid by driving the rotation of the rotating column 321, so that they reach the same state before entering the pump body 1. When liquids of different concentrations exert impact force on the rotating column 321, the rotating column 321 can buffer and disperse these impact forces, thereby reducing the instability in the liquid flow. This buffering effect allows the liquid to remain in a more stable state before entering the pump, avoiding uneven flow caused by differences in impact force. Furthermore, to ensure that the impact force generated by liquids of different concentrations acts more effectively on the rotating column 321, a fixed groove is opened in the rotating column 321, and an inclined plate 322 is set in the fixed groove. Since the impact force generated by liquids of different concentrations may be inconsistent, it can easily cause unstable movement of the rotating column 321. The design of the inclined plate 322 can increase the effective force arm of the liquid on the rotating column 321, thereby increasing the rotational torque. This means that even when the liquid concentration is different, the rotating column 321 can still obtain sufficient torque to maintain smooth rotation, which helps to more effectively convert the impact force of the liquid into rotational motion, reduce energy loss, and further improve the ability of the rotating column 321 to deliver liquids of different concentrations at a stable speed in the pump body 1, thereby improving the reliability and consistency of delivery. Then, the stabilized liquids of different concentrations flow into the second flow stabilizing plate 34 through the flow port 311 for further flow stabilization treatment.

[0034] When liquids of different concentrations enter the second flow stabilizing plate 34 through the flow port 311, they will first come into contact with the slow flow groove 343 in the semi-circular disk 342 of the second flow stabilizing plate 34. The slow flow groove 343 can smooth the pressure fluctuation of the fluid and reduce the pressure pulsation of different liquids in the pipeline, so that the pressure generated when liquids of different concentrations enter the pump body 1 is consistent. Thus, no matter how the liquid concentration changes, the pressure change after passing through the slow flow groove 343 is relatively stable and there will be no drastic fluctuations. This makes the pressure generated by liquids of different concentrations on the pump body 1 more consistent, improves the stability of the pump body 1 during operation, and avoids fluctuations in the delivery rate caused by pressure changes.

[0035] Step 3: After being processed by the slow-flow mechanism 2 and the flow-stabilizing mechanism 3, liquids of different concentrations will first enter the concentration detection mechanism 4 through the first transmission pipe 211 (Note: Only when the pump body 1 is initially started will liquids of different concentrations first enter the concentration detection mechanism 4 through the first transmission pipe 211 (i.e., enter the liquid filling area of ​​the square box 41), that is, after the equipment is turned off and restarted, it will be in the initial state of the equipment. At the same time, when the dynamic current sensor 35 emits an abnormal signal (even if the equipment is not turned off at this time), liquids of different concentrations will re-enter the concentration detection mechanism 4 for detection). At this time, the one-way pressure boosting valve 42 is opened under the control of the controller 51 (at this time, the double-port valve is opened). When the port of valve 12 used to connect to the second transmission pipe 212 is closed, while the port used to connect to the flow pipe 411 is open, the liquid flowing through the slow-flow mechanism 2 and the flow-stabilizing mechanism 3 will enter the liquid filling area of ​​the square box 41 as the one-way pressure boosting valve 42 opens. (When the liquid has filled the liquid filling area of ​​the square box 41, the pressure of the liquid in the liquid filling area will increase, which will prevent the liquid from entering the square box 41 through the first transmission pipe 211. At this time, the one-way pressure boosting valve 42 will close.) When the liquid fills the liquid filling area of ​​the square box 41, the controller 51 will control the pneumatic drive device 5 to fill the gas pressure area of ​​the square box 41 through the gas supply pipe 52. At this time, the pneumatic drive device 5 does not supply gas to the pump body 1 (meaning the pump body 1 is not working). The gas supplied by the pneumatic drive device 5 through the gas supply pipe 52 is evenly discharged into the pressure zone through the exhaust assembly 44. The gas supplied by the gas supply pipe 52 is evenly distributed into the coiled pipe 444 by the diverter pipe 443. After the gas passes through the diverter pipe 443 and the coiled pipe 444, it is dispersed into multiple small streams, each with a small flow rate. This avoids excessive gas flow in a specific area, thus achieving a uniform gas flow distribution. The uniform gas force ensures the square piston 45... The force is evenly distributed, which makes the square piston 45 slide more smoothly in the square box 41 (the square piston 45 slides because as the pneumatic drive device 5 continuously fills the air pressure zone, the air pressure in the air pressure zone gradually increases, thereby driving the square piston 45 to slide in the square box 41). This avoids the square piston 45 from shaking or becoming unstable during movement. In order to make the gas discharged from the exhaust assembly 44 more concentrated on the square piston 45, a wind concentrator 46 is provided in the square piston 45. The wind concentrator 46 can effectively convert the kinetic energy of the gas into the power acting on the square piston 45, thereby improving the efficiency of power transmission.

[0036] As the square piston 45 slides within the square housing 41, it compresses the liquid in the liquid-filling zone, forcing the liquid to enter the liquid detection zone through the perforated plate 47 (whose holes open under pressure and are normally closed). Different concentrations of liquid have different viscosities, resulting in varying resistance as they pass through the perforated plate 47. For example, higher concentration liquids have greater viscosity and flow resistance, requiring greater pressure to pass through the perforated plate 47. Therefore, the gas pressure measuring device 442 calculates the pressure exerted on the liquid by the piston driven by the pneumatic drive device 5, determining the concentration of the liquid entering the pump body 1 at that moment. Simultaneously, the gas pressure... The force measuring device 442 transmits the detection results to the controller 51, thereby adjusting the power of the pump body 1 according to the different concentrations of liquid, effectively avoiding production interruptions caused by insufficient delivery capacity. When the square piston 45 completes the pushing of the liquid, the pneumatic drive device 5 will stop working. At this time, the gas in the pressure zone will be discharged back into the pneumatic drive device 5 through the air pipe 52 due to the air pressure (the gas discharged into the pneumatic drive device 5 will not enter the pump body 1, but will be discharged through the air inlet of the pneumatic drive device 5). At this time, the air pressure in the pressure zone is normal atmospheric pressure, and the extended elastic block 451 will begin to return to its original length (the extension of the elastic block 451 is due to the movement of the square piston 45), thereby driving the square piston 45 back to its initial position.

[0037] As liquid enters the liquid detection zone, the pressure inside the zone increases (the zone already has atmospheric pressure). As more liquid enters, the pressure increases, drawing gas into the liquid pressure measuring device 43. This gas then pushes the pneumatic piston 434 to slide within the device. The distance sensor 431 detects the sliding distance of the piston 434, thus detecting the pressure within the liquid detection zone. Based on whether the pressure changes, the concentration of the liquid is determined.

[0038] The principle behind detecting liquid concentration by measuring the solubility of gases in liquids of different concentrations is as follows: The solubility of a gas in a liquid typically varies with the concentration of the liquid. Generally, as the concentration of the liquid increases, the solubility of the gas also increases; conversely, as the concentration of the liquid decreases, the solubility of the gas also decreases. This phenomenon can be explained by Henry's Law, which describes the relationship between the solubility of a gas in a liquid and the partial pressure (or concentration) of the gas.

[0039] Henry's Law can be expressed by the following formula: [ C = k \cdot P ] Where C represents the solubility of the gas in the liquid, P represents the partial pressure (or concentration) of the gas, and k is the Henry's constant, which represents the solubility coefficient of the gas in a specific liquid under specific conditions.

[0040] The liquid pressure measuring device 43 transmits the detection results to the controller 51. The controller 51 combines the results of the liquid pressure measuring device 43 and the gas pressure measuring device 442 to adjust the operating power of the pneumatic drive device 5. After the concentration detection mechanism 4 completes the detection of the current liquid concentration, the one-way pressure boosting valve 42 closes. As the port of the two-port switching valve 12 used to connect to the second transmission pipe 212 opens, the port used to connect to the flow pipe 411 closes (at this time, the liquid in the liquid detection area has entered the pump body 1 through the open port), thus completing the concentration detection of different liquids.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pneumatic pump, characterized in that, include: Pump body (1); The flow control mechanism (2) includes a flow control tank (21) fixedly connected to the upper end of the pump body (1). The inner top of the flow control tank (21) is connected to an input pipe (22). A flow divider (23) is slidably connected to the inner wall of the flow control tank (21) below the input pipe (22). A buffer assembly (24) is provided on the top of the flow divider (23). The flow stabilizing mechanism (3) includes a first flow stabilizing plate (31) fixedly connected to the inner wall of the flow stabilizing tank (21) below the flow divider (23), the first flow stabilizing plate (31) and the flow divider (23) having a distance between them, and a second flow stabilizing plate (34) fixedly connected to the inner wall of the flow stabilizing tank (21) below the first flow stabilizing plate (31). The concentration detection mechanism (4) includes a square box (41) fixedly connected to the side of the pump body (1). A one-way pressure boosting valve (42) and a liquid pressure measuring device (43) are arranged side by side on the top of the square box (41). An exhaust assembly (44) is provided on the inner wall of the square box (41) near the pneumatic drive device (5). A square piston (45) and a perforated plate (47) are arranged equidistantly around the inner wall of the square box (41). The square piston (45) and the perforated plate (47) form a pressure zone, a liquid filling zone and a liquid detection zone in the square box (41) with the exhaust assembly (44) as the starting point along the length of the square box (41).

2. A pneumatic pump according to claim 1, characterized in that, The pump body (1) has an outlet (11) and a concentration detection mechanism (4) fixedly connected to one of its opposite sides. The pump body (1) has a dual-port switching valve (12) and a pneumatic drive device (5) fixedly connected to the other opposite sides. The pneumatic drive device (5) has a controller (51) fixedly connected to the top. The dual-port switching valve (12) has a main port and a secondary port. The bottom of the outer peripheral surface of the slow-flow tank (21) near the concentration detection mechanism (4) is fixedly connected to a first transmission pipe (211). The bottom of the outer peripheral surface of the slow-flow tank (21) near the dual-port switching valve (12) is fixedly connected to a second transmission pipe (212). The end of the second transmission pipe (212) away from the slow-flow tank (21) is fixedly connected to the main port. The buffer assembly (24) includes a force-bearing column (241) fixedly connected to the center of the top of the diverter (23). A collection cover (243) is fixedly connected to the outer circumferential surface of the force-bearing column (241). The bottom of the collection cover (243) is provided with multiple annular grooves (244) with the force-bearing column (241) as the center and the diameter increasing sequentially. Multiple leakage holes are provided on the inner bottom surface of each annular groove (244). A diverter ball (242) is fixedly connected to the top of the force-bearing column (241). Multiple drainage grooves are provided on the spherical annular array of the diverter ball (242).

3. A pneumatic pump according to claim 1, characterized in that, A pressure measuring rod (33) is fixedly connected to the center of the inner bottom surface of the first stabilizing plate (31). The end of the pressure measuring rod (33) away from the first stabilizing plate (31) is movably inserted into the center of the bottom of the diverter (23). The outer circumferential surface of the pressure measuring rod (33) is provided with a plurality of grooves (331) arranged in a ring. Each groove (331) is provided with a resistor groove (332). The resistor groove (332) is provided with a linear array of resistor contacts (333). The pressure measuring rod (33) is located below the groove (331). Multiple fixed seats (334) are fixedly connected to the outer circumferential array. A current sensor (35) is movably sleeved on the outer circumferential surface of the pressure measuring rod (33). The current sensor (35) is electrically connected to the controller (51). A sliding rod and a metal ball are provided on the inner circumferential surface of the current sensor (35). The sliding rod is slidably connected to the sliding groove (331), and the metal ball is in contact with the resistor sliding groove (332) and the resistor contact (333). A spring (335) is fixedly connected to the opposite surfaces of the multiple fixed seats (334) and the current sensor (35).

4. A pneumatic pump according to claim 3, characterized in that, The outer circumferential surface of the pressure measuring rod (33) is movably sleeved with an elastic telescopic column (312). The elastic telescopic column (312) is a hollow structure, and the hollow diameter of the elastic telescopic column (312) is larger than the diameter of the current sensor (35). The two ends of the elastic telescopic column (312) are fixedly connected to the opposite surfaces of the diverter (23) and the first stabilizing disk (31), respectively. The inner bottom of the first stabilizing disk (31) is provided with multiple arc-shaped flow ports (311) arranged in a ring array with the pressure measuring rod (33) as the center. At least two sets of positioning rods (32) are provided inside and outside the inner bottom of the first stabilizing disk (31). Each set of positioning rods (32) has at least two, and the positioning rods (32) in each adjacent set are radially staggered. The outer circumferential surface of each positioning rod (32) is rotatably connected with a rotating column (321). The outer circumferential surface of the rotating column (321) is provided with a fixed groove in a ring. The inner ring array of the fixed groove is fixedly connected with inclined plates (322).

5. A pneumatic pump according to claim 1, characterized in that, The inner circumferential surface of the second flow stabilizer (34) is fixedly connected with a plurality of support rods (341). The end of each support rod (341) away from the second flow stabilizer (34) is fixedly connected to a semi-circular disk (342). The outer circular surface of the semi-circular disk (342) is provided with a series of slow-flow grooves (343) with increasing depth and increasing diameter from top to bottom.

6. A pneumatic pump according to claim 1, characterized in that, The square box (41) is fixedly connected to a flow pipe (411) on the side near the double-port switching valve (12). The end of the flow pipe (411) away from the square box (41) is fixedly connected to the auxiliary port. The one-way pressure boosting valve (42) is fixedly connected to the top of the square box (41), and the position of the one-way pressure boosting valve (42) corresponds to the position of the first transmission pipe (211). The one-way pressure boosting valve (42) is electrically connected to the controller (51). The end of the first transmission pipe (211) away from the slow-flow tank (21) is connected to the inside of the square box (41), and the one-way pressure boosting valve (42) is located on the outer circumference of the first transmission pipe (211). A liquid pressure measuring device (43) is fixedly connected to the top of the square box (41) near the one-way pressure boosting valve (42). The center position of the top of the liquid pressure measuring device (43) is fixedly connected to the liquid pressure measuring device (43). The liquid pressure measuring device (43) is fixedly connected to a multi-section pressure rod (432). The top of the liquid pressure measuring device (43) is evenly provided with multiple exhaust holes (433) in a ring around the pressure rod (432). Two distance sensors (431) are symmetrically fixedly connected to the top of the liquid pressure measuring device (43) and near the exhaust holes (433). A pneumatic piston (434) is airtightly slidably connected to the inner wall of the liquid pressure measuring device (43). The end of the multi-section pressure rod (432) away from the top of the liquid pressure measuring device (43) is fixedly connected to the pneumatic piston (434). A cross-shaped limiting rod (435) is fixedly connected to the inner wall of the liquid pressure measuring device (43) below the pneumatic piston (434). A gas supply pipe (52) is fixedly connected to the side of the pneumatic drive device (5) near the concentration detection mechanism (4).

7. A pneumatic pump according to claim 6, characterized in that, The exhaust assembly (44) includes a fixed pipe (441) fixedly connected to the inner wall of one side of the square box (41). The fixed pipe (441) is fixedly connected to a gas supply pipe (52) at the end away from the pneumatic drive device (5). A gas pressure measuring device (442) is fixedly connected to the side of the fixed pipe (441) facing the square piston (45). A plurality of branch pipes (443) are fixedly connected to the outer circumferential surface of the fixed pipe (441) in an annular array. The outer circumferential surface of each branch pipe (443) is fixed together. The device is connected to a plurality of coiled tubes (444) with increasing diameter from the inside to the outside. The diverter tube (443) and the coiled tubes (444) are evenly provided with a plurality of air holes on the side facing the square piston (45). The square piston (45) is airtightly slidably connected to the inner wall of the square box (41) near the pneumatic drive device (5). The perforated plate (47) is fixedly connected to the inner wall of the square box (41) near the two-port switching valve (12). The two-port switching valve (12) is electrically connected to the controller (51).

8. A pneumatic pump according to claim 7, characterized in that, The square piston (45) has four elastic blocks (451) fixedly connected to the four corners of its edge and the opposite side of the inner wall of the pneumatic drive device (5). A communication port is opened at the center of the square piston (45). A wind-gathering hood (46) is fixedly connected to the side of the square piston (45) facing the flow pipe (411), and the wind-gathering hood (46) corresponds to the position of the fixing groove.

Images