Oil-water preparation device

Abstract

This invention relates to an apparatus for preparing viscous water. It disperses surfactants in water to form aqueous micelles, employs impact-force fragmentation technology to break down surfactant agglomerates into tiny micelles, and controls foam accumulation through a foam suppression system. This prevents excessive foam from reducing the impact force and efficiency of the pump and nozzles, ensuring the accuracy of the surfactant-water mixing ratio. This significantly improves the quality and production efficiency of the viscous water while reducing costs.

Description

Technical Field

[0001] This invention relates to a technique for preparing a viscous water mixture by mixing an emulsifier and water. This viscous water mixture can be mixed with diesel fuel to prepare emulsified oil for use in diesel engines and the like. Background Technology

[0002] Emulsified oil refers to a fuel where diesel oil is the continuous phase and water is the dispersed phase. Because oil and water do not mix well, surfactants are essential for the proper mixing of these two liquids. The working principle of emulsified oil in engines is as follows: Upon entering the engine cylinder, the emulsified oil undergoes secondary atomization, making the oil droplets finer and allowing for more complete mixing with oxygen, resulting in more thorough combustion. Only when oil-encapsulated water droplets enter the hot combustion chamber can the water inside the droplets turn into water vapor, causing a tiny explosion—that is, secondary atomization. Conversely, water-encapsulated oil droplets cannot produce secondary atomization. Surfactants consist of a hydrophilic head and a hydrophobic tail. To ensure that the surfactant helps oil and water mix and uniformly form oil-encapsulated water droplets, the surfactant must first be mixed with water to form a viscous oil-water mixture before mixing the viscous oil-water mixture with oil.

[0003] Existing emulsified oils generally suffer from poor mixing uniformity. The performance of emulsified oils depends on their uniformity; poor uniformity can adversely affect engine performance, such as unstable engine speed, high fuel consumption, and potentially lower water content, which may lead to higher emissions of NOx, PM, HC, and CO. The uniformity of emulsified oils largely depends on the uniformity of the oil-water mixture.

[0004] The preparation of viscous water involves mixing surfactants and water. When emulsifiers and water are mixed, micelles or small spheres are formed. These are difficult to break down and dissolve using only a propeller-type agitator because the spherical substances deform (elongate). Some suspended spheres are cut into smaller spheres by the high-shear agitator, while many suspended spheres swirl around the agitator blades, affecting the raw material ratio and mixing effect.

[0005] CN115957648A discloses an apparatus and method for preparing viscous oil-water mixtures. The method uses an impact mixer, a circulating mixing pump, and a mixing tank to form a mixing structure. The impact nozzle of the impact mixer subjects all small balls to high impact force, atomizing the mixture into a spray and further reducing the diameter of the small balls. Compared to traditional high-shear mixers, this method achieves more precise raw material proportions and more uniform mixing. However, this method of preparing viscous oil-water mixtures by generating high impact force through impact spraying easily leads to excessive foaming. Excessive foam reduces the impact force and efficiency of the pump and nozzle, and also reduces the effective capacity of the mixing tank, thus affecting the accuracy of the surfactant and water mixing ratio. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a device and method for preparing viscous water by preventing foam accumulation under the condition of mixing viscous water with strong shear force generated by nozzle jet impact in view of the above-mentioned defects of the prior art.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0008] A device for preparing viscous oil-water mixture is provided, comprising a surfactant dosing cylinder, a water dosing cylinder, a viscous oil-water mixing tank, an impact cylinder, a viscous oil-water tank, a surfactant supply pump, a water supply pump, an impact mixer, and a circulating mixing pump. The surfactant dosing cylinder is connected to the surfactant dosing cylinder via the surfactant supply pump. The water dosing cylinder is connected to the water supply tank via the water supply pump. The outlet of the water dosing cylinder is connected in sequence to a feed pipe assembly located inside the viscous oil-water mixing tank via the circulating mixing pump, the impact mixer, and the impact cylinder.

[0009] The side wall of the surfactant dosing cylinder is provided with a liquid jet nozzle for spraying liquid from the water dosing cylinder onto the other side wall of the surfactant dosing cylinder, thereby removing the surfactant adhering to the cylinder wall through circulating liquid.

[0010] The water dosing cylinder is equipped with an upper premixing system to promote the breakage of surfactant micelles. The premixing system includes an impact mixer, a circulating mixing pump, and a metal filter basket disposed in the upper part of the water dosing cylinder to capture surfactant agglomerates. The inlet pipe of the impact mixer is connected to the upper part of the water dosing cylinder via the circulating mixing pump. The nozzle outlet and impact nozzle outlet of the impact mixer are respectively disposed in the upper part of the water dosing cylinder.

[0011] The impact cylinder is positioned above the viscous oil-water mixing tank and connected to the upper end of the feed pipe assembly of the viscous oil-water mixing tank. Under the action of the liquid circulation mixing pump in the water dosing cylinder, the liquid enters the feed pipe of the viscous oil-water mixing tank through the impact mixer and the impact cylinder in sequence.

[0012] The bottom and top of the viscous oil-water mixing tank are provided with a mixing loop for circulating spraying the contents of the viscous oil-water mixing tank. The mixing loop includes a circulating mixing pump and an impact mixer. The inlet pipe of the impact mixer is connected to the bottom of the viscous oil-water mixing tank through the circulating mixing pump. The nozzle outlet and impact nozzle outlet of the impact mixer are respectively located at the top of the viscous oil-water mixing tank.

[0013] Both the top of the water dosing cylinder and the top of the viscous water mixing tank are equipped with automatic venting devices. The automatic venting devices include an electromagnetic venting valve, an automatic shut-off venting valve, and an overflow pipe. The electromagnetic venting valve and the automatic shut-off venting valve are used together to promote rapid air release during loading to prevent foam overflow, and to enhance air intake during discharge to accelerate the discharge rate. The overflow pipe is used to allow leaked liquid to flow back during discharge. The overflow pipe is equipped with a float venting valve, which is fixed by a light spring to prevent the float from blocking the outlet during discharge.

[0014] Furthermore:

[0015] The viscous oil-water mixing tank is connected to a bleach meter for gravity feeding and adding antibacterial agent. The bleach meter includes a storage tank, an automatic shut-off vent valve, a flow sensor, and a solenoid valve with a timer relay for dosage control. The storage tank is connected to the viscous oil-water mixing tank through the solenoid valve. The flow sensor is used to trigger an alarm when the liquid level in the storage tank is lower than a preset value.

[0016] A non-contact, flow-free sensor is installed at the outlet of the water dosing cylinder.

[0017] The bottom outlet of the viscous oil-water mixing tank is connected to a level controller, which includes a stainless steel float sensor for activating and controlling the liquid level at the bottom position.

[0018] The side and top walls of the viscous oil-water mixing tank are equipped with defoaming nozzles. Under the action of the pump, the mixture delivered from the bottom outlet of the viscous oil-water mixing tank is sprayed out from the defoaming nozzles to prevent foam accumulation. The defoaming nozzle includes a defoaming compression chamber and an inlet and a spray nozzle connected to its two ends respectively.

[0019] A check valve is provided between the outlet of the impact cylinder and the feed pipe assembly of the viscous oil-water mixing tank.

[0020] The feed pipe assembly has a tapered outlet for discharging liquid directly into the bottom of the viscous oil-water mixing tank.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The present invention disperses surfactants in water to form aqueous micelles, uses impact crushing technology to decompose surfactant clumps into tiny micelles, and controls foam accumulation through a foam suppression system to avoid excessive foam reducing the impact force and efficiency of pumps and nozzles, and ensures the accuracy of the mixing ratio of surfactants and water. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the structural principle of the viscous oil-water mixing device of this utility model;

[0023] Figure 2This is a schematic diagram of the water dosing cylinder and mixing tank of an embodiment of the viscous oil-water preparation device of this utility model;

[0024] Figure 3 This is a schematic diagram of the automatic ventilation device in an embodiment of the viscous oil and water preparation apparatus of this utility model;

[0025] Figure 4 This is a schematic diagram of the bleach metering device in an embodiment of the viscous oil-water preparation apparatus of this utility model;

[0026] Figure 5 This is a schematic diagram of the non-contact, flow-free sensor in an embodiment of the viscous oil-water preparation device of this utility model;

[0027] Figure 6 This is a schematic diagram of the impact mixer in an embodiment of the viscous oil-water preparation device of this utility model;

[0028] Figure 7 This is a schematic diagram of the liquid level controller in an embodiment of the viscous oil-water preparation device of this utility model;

[0029] Figure 8 This is a schematic diagram of the feed pipe assembly of the viscous oil-water mixing tank in an embodiment of the viscous oil-water preparation device of this utility model;

[0030] Figure 9 This is a schematic diagram of the defoaming nozzle in an embodiment of the viscous water preparation device of this utility model. Detailed Implementation

[0031] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] The surfactant emulsifier used in this invention has a molecular structure comprising a hydrophilic head and a hydrophobic tail. By dispersing the surfactant in water to form aqueous micelles, these hydrophobic aqueous micelles can be mixed with diesel fuel to form a water-diesel emulsion.

[0033] Impact crushing technology is used to break down surfactant agglomerates into tiny micelles. A fully automated mixing system ensures precise dosing using a dosing cylinder and is equipped with customized sensors and components. Commercially available mass-produced pumps and components are selected to optimize costs while ensuring equipment availability.

[0034] Because the impact-breaking technology generates excessive foam, it significantly reduces the impact force and operating efficiency of the pump body and nozzles. Therefore, this invention employs a foam suppression method, which also helps maximize the effective volume of the storage tank.

[0035] The prepared surfactant-rich aqueous solution (viscous water) needs to be emulsified with diesel fuel in a specialized mixing device. This process can effectively reduce the generation of random micelles. Only diesel-coated aqueous micelles can achieve secondary atomization—when tens of thousands of tiny micelles are injected into the high-temperature combustion chamber, their explosive vaporization process will further break down the diesel coating into even finer particles, allowing for complete combustion.

[0036] like Figure 1 As shown, an oil-water preparation apparatus includes a surfactant tank T5, a water tank T6, a surfactant dosing cylinder T2, a water dosing cylinder T1, an oil-water mixing tank T3, an impact cylinder T4, an oil-water tank T5, impact mixers M1, M2, M3, and M4, a surfactant supply pump A, a water supply pump B, and circulating mixing pumps C, D, E, and F. The impact mixers include an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet.

[0037] The inlet of the surfactant dosing cylinder T5 is connected to the surfactant tank T5 via a surfactant supply pump A. The outlet of the surfactant dosing cylinder T2 is connected to the water dosing cylinder T1 via a valve. The bottom of the water dosing cylinder T1 is connected to the bottom of the water supply tank T6 via a water supply pump B. The outlet of the water dosing cylinder T1 is connected to the feed pipe assembly located inside the viscous oil-water mixing tank T3 via a valve.

[0038] In this embodiment, the water dosing cylinder T1 is equipped with an upper premixing system to promote surfactant micelle breakage. This premixing system includes an impact mixer M1, a circulating mixing pump D, and a metal filter basket disposed in the upper part of the water dosing cylinder to capture surfactant agglomerates. The inlet pipe of the impact mixer M1 is connected to the upper part of the water dosing cylinder T1 via the circulating mixing pump D. The nozzle outlet and impact nozzle outlet of the impact mixer M1 are respectively located in the upper part of the water dosing cylinder T1. The upper premixing system promotes the breakage of surfactant micelles in the upper metal filter basket of the water dosing cylinder. Surfactants enter the metal filter basket, where they are drawn out through the outlet pipe connected to the circulating mixing pump D, circulated through the impact mixer M1, and then re-enter the metal filter basket through the nozzle. The impact mixer M1 promotes surfactant micelle breakage, and the nozzle facilitates the dispersion of surfactant micelles. Only sufficiently small micelles can pass through the mesh of the filter basket, while surfactant micelles larger than the mesh size remain inside the filter basket for further breakage and dispersion.

[0039] In this embodiment, a liquid column nozzle is connected to one side wall of the surfactant dosing cylinder T2. The liquid coming out of the surfactant dosing cylinder passes sequentially through the water dosing cylinder T1, the circulation transfer pump C and the liquid column nozzle, and is sprayed by the liquid column nozzle to the other side wall of the surfactant dosing cylinder T2 to remove the surfactant adhering to the cylinder wall.

[0040] The inlet pipe of the impact mixer M2 is connected to the bottom of the water dosing cylinder T1 via a circulating transfer pump C. The nozzle outlet and impact nozzle outlet of the impact mixer M2 are respectively connected to the impact cylinder T4. The impact cylinder T4 is located above the viscous oil-water mixing tank and is connected to the upper end of the feed pipe assembly of the viscous oil-water mixing tank T3.

[0041] The inlet pipe of the impact mixer M3 is connected to the funnel-shaped bottom of the viscous oil-water mixing tank T3 via a circulating mixing pump E. The nozzle outlet and impact nozzle outlet of the impact mixer M3 are respectively located at the upper part of the viscous oil-water mixing tank T3. The impact mixer M3 and the circulating mixing pump E form a first mixing loop. The inlet pipe of the impact mixer M4 is connected to the funnel-shaped bottom of the viscous oil-water mixing tank T3 via a circulating mixing pump F. The nozzle outlet and impact nozzle outlet of the impact mixer M4 are respectively located at the upper part of the viscous oil-water mixing tank T3. The impact mixer M4 and the circulating mixing pump F form a second mixing loop.

[0042] The nozzle needs to spray into the air to achieve its breaking effect; therefore, air space must be maintained in the viscous oil-water mixing tank. To ensure air space between the liquid level and the top of the viscous oil-water mixing tank T3, the volume of the viscous oil mixing tank T3 is greater than the sum of the volumes of the surfactant dosing cylinder T2 and the water dosing cylinder T1. Each dosing cylinder is equipped with a float shut-off valve, which facilitates automatic filling and emptying of each dosing cylinder. Defoaming nozzles 10 are installed on the side and top walls of the viscous oil-water mixing tank T3. Under the action of the pump, the mixture delivered from the bottom outlet of the viscous oil-water mixing tank is sprayed out through the defoaming nozzles to prevent foam accumulation.

[0043] like Figure 6 As shown, each impact mixer includes a cavity 31, an inlet pipe 35, an outlet pipe 32, and an equalizing cylinder 34. The inlet pipe has a liquid jet nozzle outlet, and there are two outlet pipes, one with a liquid jet nozzle outlet and the other with an equalizing cylinder 34 connected to two impact nozzle outlets. An air space 37 is maintained inside the cavity 31 of the impact mixer, and the outlet of the inlet pipe is located within this air space. The inlet of the outlet pipe is near the bottom of the cavity 31, trapping air inside as the liquid level 36 rises. Since the impact force is greater in air than in liquid, the air space is used to enhance the jet impact to break up the mixed particles, ensuring optimal impact breaking effect. The mixture of surfactant and water from the inlet pipe is sprayed onto the upper surface of the cavity, and the spray speed is adjustable to break up surfactant clumps.

[0044] Feed tube assembly 7, etc. Figure 8 As shown, it includes a feed pipe 71, a height adjuster 72 located at the upper end of the feed pipe, and a tapered outlet 73 located at the lower end of the feed pipe. Figure 1 As shown, the conical outlet 73 is located near the funnel-shaped bottom of the mixing tank.

[0045] The gap between the conical outlet 73 and the funnel-shaped bottom of the mixing tank can be adjusted by adjusting the height of the feed pipe, and the height adjuster 72 is used to adjust the height of the feed pipe. The variation in the gap between the conical outlet 73 and the funnel-shaped bottom of the mixing tank can control the feed rate. In some embodiments, such as... Figure 1 As shown, the feed pipe 71 is located at the center of the top surface of the mixing tank.

[0046] Because foam is easily generated during the preparation process, excessive foam reduces the impact force and efficiency of the pump and nozzle. Furthermore, the overflow of compressed foam during expansion can affect the mixing ratio. To minimize foam generation and prevent foam overflow, such as... Figure 1 and Figure 2 As shown, both the water dosing cylinder T1 and the viscous oil-water mixing tank T3 are equipped with an automatic ventilation device 5 at their upper parts, replacing the original ventilation cylinders. This allows the air in the water dosing cylinder T1 and the viscous oil-water mixing tank T3 to be quickly discharged during the transfer cycle, minimizing pressure accumulation.

[0047] like Figure 3 As shown, the automatic venting device 5 includes an electromagnetic vent valve 51, an automatic shut-off vent valve 52, and an overflow pipe 53. The electromagnetic vent valve and the automatic shut-off vent valve work together during loading to promote rapid air release and prevent pressure buildup. The overflow pipe allows leaked liquid to flow back during discharge. A float vent valve is installed inside the overflow pipe 53 to reduce the airflow into the valve chamber during loading. Since the float 55 cannot float in foam, a lightweight spring 54 is installed to prevent it from blocking the outlet during discharge. The spring also helps to reduce the gap between the float and the vent during loading. The diameter of the float 55 is smaller than the inner diameter of the overflow pipe 53, leaving sufficient clearance for air to be discharged during loading. The automatic shut-off vent valve 52 ensures that the float does not close accidentally during loading. Controlling the electromagnetic vent valve 51 to remain open during loading prevents pressure buildup in the water dosing cylinder T1 and the viscous water mixing tank T3. Maintaining the tank pressure at atmospheric pressure avoids foam expansion and overflow, thus minimizing the impact on the mixing ratio. The solenoid vent valve 51 is opened during discharge to enhance air intake, thus accelerating the discharge rate. A faster outflow rate translates to higher operating efficiency. The solenoid vent valve remains closed during non-load and non-discharge periods.

[0048] like Figure 1 and Figure 2 As shown, the steps of the method for preparing viscous water are as follows:

[0049] 1. Loading of water dosing cylinder T1 and surfactant dosing cylinder T2.

[0050] Start water supply pump B, open water dosing cylinder valve 1 to load water dosing cylinder T1. When the water dosing cylinder is full, first control water supply pump B to automatically shut off, then control water dosing cylinder valve 1 to close. Start surfactant supply pump A, open surfactant inlet valve 2 to load surfactant dosing cylinder T2. When surfactant dosing cylinder T2 is full, first control surfactant supply pump A to automatically shut off, then control surfactant dosing inlet valve 2 to close. When loading water dosing cylinder T1, use the automatic venting device 5 installed on it to quickly expel air from the water dosing cylinder to minimize pressure accumulation in the water dosing cylinder.

[0051] 2. Surfactant flushing circulation and water dosing cylinder T1 internal circulation.

[0052] Start circulating mixing pumps C and D, open valves 3, 4, and 5, and close valve 6. The liquid exiting the surfactant dosing cylinder T2 enters the water dosing cylinder T1 through valve 3. Figure 1 As shown, in this step, the circulation is divided into two paths. The first path is a flushing circulation between the water dosing cylinder T1 and the surfactant T2. Under the action of the circulating mixing pump C, the liquid flowing out from the bottom of the water dosing cylinder T1 passes sequentially through valve 4, circulating transfer pump C, valve 5, and the liquid column nozzle, and is sprayed from the liquid column nozzle onto the other side wall of the surfactant dosing cylinder T2. The circulating liquid removes the surfactant adhering to the wall of the surfactant dosing cylinder. The second path is an internal circulation within the water dosing cylinder T1. Under the action of the circulating mixing pump D, the liquid flowing out from the bottom of the water dosing cylinder T1 passes sequentially through valve 4, valve 1, circulating transfer pump D, valve V1 (at this time, valve V2 is controlled to be closed), and pipe P1 into the upper part of the water dosing cylinder T1. The circulation time can be set to 5 minutes.

[0053] 3. Surfactant flushing circulation and water dosing cylinder T1 upper premixing system circulation.

[0054] Start circulating mixing pumps C and D, open valves 3, 4, and 5, and close valve 6. Figure 1As shown, in this step, the circulation is divided into two paths. The first path is the same as the first path in the second step, which is a rinsing circulation between the water dosing cylinder T1 and the surfactant T2. Under the action of the circulating mixing pump C, the liquid flowing out from the bottom of the water dosing cylinder T1 passes sequentially through valve 4, circulating transfer pump C, valve 5, and the liquid column nozzle, and is sprayed from the liquid column nozzle to the other side wall of the surfactant dosing cylinder T2. The circulating liquid removes the surfactant adhering to the wall of the surfactant dosing cylinder. The second path is different from the second path in the second step. It uses the circulating mixing pump D to circulate the water in the water dosing cylinder T1 through the impact mixer M1 and the outlet pipe P1 to agitate the upper premixing system to capture surfactant clumps. The spray speed is adjusted by the impact mixer M1 to break up the surfactant clumps. The specific circulation is as follows: Under the action of the circulating mixing pump D, the liquid flowing out from the upper premixing system of the water dosing cylinder T1 passes sequentially through the pipe P1, valve V2 (at this time, valve V1 is controlled to be closed), circulating transfer pump D, valve V3, and impact mixer M1 into the upper part of the water dosing cylinder T1. The premixing time can be set to 10 minutes.

[0055] 4. Loading of the viscous oil-water mixing tank T3, i.e., transferring the premixed mixture to the viscous oil-water mixing tank T3.

[0056] At the end of the premixing time, circulating mixing pump C remains on, while circulating mixing pump D is turned off; valves 3, 4, 5, and 6 are open, and valve 9 is closed. The vent valve on the impact cylinder above the viscous oil-water mixing tank closes during loading to create an air chamber. Under the action of circulating mixing pump C, the premixed mixture from water dosing cylinder T1 is sprayed through the nozzle outlet of impact mixer M2 and the impact nozzle outlet onto the side wall of impact cylinder T4, and then flows through impact cylinder T4 into the feed pipe assembly of viscous oil-water mixing tank T3, reaching the bottom of tank T3. The tapered pipe at the bottom of the feed pipe assembly discharges the mixture to near the bottom of the tank. The incoming mixture flows directly into the inlets of pumps E and F, ensuring that undissolved surfactants do not float. Free-floating surfactant clumps are difficult to dissolve, and undissolved surfactants affect the mixing ratio and quality of the product. The gap between the tapered outlet edge of the feed pipe assembly and the funnel-shaped bottom of mixing tank T3 can be used to control the inflow rate of the mixture in the mixing tank. The gap between the conical outlet and the funnel-shaped tank bottom can be adjusted by rotating the feed pipe assembly, a measure that reduces free-floating clumps. The vent valve on the impact cylinder T4 must be closed during transfer to create an air chamber for breaking up suspended surfactant clumps.

[0057] After the flow sensor 11 at the outlet of the water dosing cylinder T1 is turned on or moved, after a set time such as 10 minutes (adjustable duration), the loading process of the viscous oil-water mixing tank T3 is stopped, pumps C and D are turned off, and valves 3, 4 and 6 are turned off.

[0058] In this step, the water dosing cylinder T1 discharges air, and the electromagnetic vent valve of the automatic venting device 5 installed on the water dosing cylinder opens to enhance air intake, thus accelerating the discharge rate. This quickly expels air from the water dosing cylinder, minimizing pressure buildup. Similarly, the automatic venting device 5 rapidly expels air from the viscous oil-water mixing tank, minimizing pressure buildup and preventing foam accumulation and overflow.

[0059] 5. Mixing process in oil-viscous water mixing tank T3.

[0060] Once the viscous oil-water mixing tank is loaded, start the circulating mixing pumps E and F, open valve 7, and close valve 8. Under the action of circulating mixing pump E, the contents of the viscous oil-water mixing tank T3 are sprayed onto the upper part of the tank via impact mixer M3. Simultaneously, under the action of circulating mixing pump F, the contents of mixing tank T3 are sprayed onto the upper part of the tank via impact mixer M4. The circulating mixing is set for a time, for example, 15 minutes (adjustable), and the viscous oil-water mixture is prepared.

[0061] Finally, turn off pumps E and F, close valve 7, open valve 8, and discharge the prepared viscous water into the viscous water tank T7.

[0062] In the method for preparing viscous water, during loading of the water dosing cylinder T1 and the viscous water mixing tank T3, the electromagnetic vent valve of the automatic venting device opens together with the automatic shut-off vent valve to promote rapid air release. Controlling the electromagnetic vent valve 51 to remain open during loading prevents pressure buildup in the water dosing cylinder T1 and the viscous water mixing tank T3, maintaining the tank pressure at atmospheric pressure to avoid foam expansion and overflow. This minimizes the impact on the mixing ratio. Controlling the electromagnetic vent valve 51 to open during discharge enhances air intake, thus accelerating the discharge rate; a faster outflow speed means higher operating efficiency. Except during loading and discharge, the electromagnetic vent valve is kept closed.

[0063] like Figure 1 and Figure 2 As shown, a gravity-feed bleach meter 8 is installed above the viscous oil-water mixing tank T3. This gravity-feed liquid metering device facilitates the addition of small doses of antibacterial agent, preventing bacterial growth from affecting the quality and shelf life of the viscous oil-water mixture. Figure 4 As shown, the gravity-feed bleach metering device includes a reservoir 81, an automatically shut-off vent valve 82, a flow sensorless switch 83, and a miniature solenoid valve 84 with a timer relay for dosage control. Gravity feeding is suitable for small doses of up to 30 ml. When the liquid level in the reservoir falls below a preset value, the flow sensorless switch will trigger an alarm. The gravity-feed liquid metering device requires no power and has the advantages of simplicity, reliability, and low cost.

[0064] like Figure 1 and Figure 2 As shown, a non-contact flow sensor 11 is installed at the outlet of the dosing cylinder T1. This non-contact flow sensor is not sensitive to foam. Figure 5 As shown, the flow sensor 11 includes a glass tube 111, plastic connectors 112 located at both ends of the glass tube, and a flow sensor 113 located on the wall of the glass tube. An O-ring 114 provides an additional seal between the glass tube and the plastic connectors. The plastic connectors expand and contract with temperature changes; therefore, they must be preheated by immersing them in hot water before insertion into the glass tube, and they will self-seal upon cooling and contraction.

[0065] like Figure 1 and Figure 2 As shown, the bottom outlet of the viscous oil-water mixing tank T3 is connected to a level controller 9. When the liquid level in the tank reaches the preset value, the pump is shut off, and the liquid in the connecting hose, valve, and pump is retained for the next cycle. This method improves the accuracy of the mixing ratio. Figure 7 As shown, the level controller 9 includes a stainless steel float sensor 91 and an automatic shut-off vent valve 92. The stainless steel float sensor is activated at the bottom position, and the automatic shut-off vent valve facilitates the rise and fall of the float. If air is trapped, the float cannot rise.

[0066] like Figure 2 As shown, defoaming nozzles 10 are installed on the side and top walls of the viscous oil-water mixing tank T3. Under the action of the pump, the mixture delivered from the bottom outlet of the viscous oil-water mixing tank is sprayed out at a 90-degree angle from the defoaming nozzles on the side and top walls of the tank to prevent foam accumulation. Figure 9 As shown, the defoaming nozzle includes a defoaming compression chamber 101 and an inlet 102 and a spray nozzle 103 connected to its two ends, respectively. Because a compression chamber is added to the standard spray nozzle, the compression principle is used to break up foam bubbles. When the foam bubbles burst, the released air rises upwards, while the liquid settles to the bottom. The increased pressure inside the compression chamber forces the liquid to be sprayed out of the nozzle.

[0067] like Figure 2 As shown, a check valve 12 is installed between the outlet of the impact cylinder 4 and the feed pipe assembly of the viscous oil-water mixing tank T3 to facilitate circulation in the feed pipe and flushing of floating surfactant clumps in the conical outlet feed pipe. The accumulation of floating surfactant clumps in the conical feed pipe can negatively affect the mixing ratio.

[0068] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and these modifications and substitutions should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A device for preparing viscous oil-water mixture, comprising a surfactant dosing cylinder, a water dosing cylinder, a viscous oil-water mixing tank, an impact cylinder, a viscous oil-water tank, a surfactant supply pump, a water supply pump, an impact mixer, and a circulating mixing pump, wherein the surfactant dosing cylinder is connected to the surfactant dosing cylinder via the surfactant supply pump; the water dosing cylinder is connected to the water supply tank via the water supply pump, and the outlet of the water dosing cylinder is connected in sequence via the circulating mixing pump, the impact mixer, and the impact cylinder to a feed pipe assembly located inside the viscous oil-water mixing tank; The side wall of the surfactant dosing cylinder is provided with a liquid jet nozzle for spraying liquid from the water dosing cylinder onto the other side wall of the surfactant dosing cylinder, thereby removing the surfactant adhering to the cylinder wall through circulating liquid. The water dosing cylinder is equipped with an upper premixing system to promote the breakage of surfactant micelles. The premixing system includes an impact mixer, a circulating mixing pump, and a metal filter basket disposed in the upper part of the water dosing cylinder to capture surfactant agglomerates. The inlet pipe of the impact mixer is connected to the upper part of the water dosing cylinder via the circulating mixing pump. The nozzle outlet and impact nozzle outlet of the impact mixer are respectively disposed in the upper part of the water dosing cylinder. The impact cylinder is positioned above the viscous oil-water mixing tank and connected to the upper end of the feed pipe assembly of the viscous oil-water mixing tank. Under the action of the liquid circulation mixing pump in the water dosing cylinder, the liquid enters the feed pipe of the viscous oil-water mixing tank through the impact mixer and the impact cylinder in sequence. The bottom and top of the viscous oil-water mixing tank are provided with a mixing loop for circulating spraying the contents of the viscous oil-water mixing tank. The mixing loop includes a circulating mixing pump and an impact mixer. The inlet pipe of the impact mixer is connected to the bottom of the viscous oil-water mixing tank through the circulating mixing pump. The nozzle outlet and impact nozzle outlet of the impact mixer are respectively located at the top of the viscous oil-water mixing tank. Its features are: Both the top of the water dosing cylinder and the top of the viscous water mixing tank are equipped with automatic venting devices. The automatic venting devices include an electromagnetic venting valve, an automatic shut-off venting valve, and an overflow pipe. The electromagnetic venting valve and the automatic shut-off venting valve are used together to promote rapid air release during loading to prevent foam overflow, and to enhance air intake during discharge to accelerate the discharge rate. The overflow pipe is used to allow leaked liquid to flow back during discharge. The overflow pipe is equipped with a float venting valve, which is fixed by a light spring to prevent the float from blocking the outlet during discharge.

2. The apparatus for preparing viscous water according to claim 1, characterized in that: The viscous oil-water mixing tank is connected to a bleach meter for gravity feeding and adding antibacterial agent. The bleach meter includes a storage tank, an automatic shut-off vent valve, a flow sensor, and a solenoid valve with a timer relay for dosage control. The storage tank is connected to the viscous oil-water mixing tank through the solenoid valve. The flow sensor is used to trigger an alarm when the liquid level in the storage tank is lower than a preset value.

3. The apparatus for preparing viscous water according to claim 1, characterized in that: A non-contact, flow-free sensor is installed at the outlet of the water dosing cylinder.

4. The apparatus for preparing viscous water according to claim 1, characterized in that: The bottom outlet of the viscous oil-water mixing tank is connected to a level controller, which includes a stainless steel float sensor for activating and controlling the liquid level at the bottom position.

5. The apparatus for preparing viscous water according to claim 1, characterized in that: The side and top walls of the viscous oil-water mixing tank are respectively equipped with defoaming nozzles, which include a defoaming compression chamber and an inlet and a spray nozzle connected to its two ends respectively.

6. The apparatus for preparing viscous water according to claim 1, characterized in that: A check valve is provided between the outlet of the impact cylinder and the feed pipe assembly of the viscous oil-water mixing tank.

7. The apparatus for preparing viscous water according to claim 1, characterized in that: The feed pipe assembly has a tapered outlet for discharging liquid directly into the bottom of the viscous oil-water mixing tank.

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