Pneumatic stirring device for mixed cooling liquid

Abstract

The present invention relates to the technical field of mixing and stirring, and particularly discloses a mixed cooling liquid pneumatic stirring apparatus, which comprises: a stirring box body, which is internally provided with a stirring cavity for accommodating a cooling liquid, and the bottom of the stirring box body is provided with a liquid outlet; the liquid inlet assembly is arranged on the stirring box body and is used for inputting a cooling medium into the stirring cavity; the pneumatic turbulent flow assembly comprises a gas distribution pipeline and a flow guide mechanism, the gas distribution pipeline is arranged in the bottom area of the stirring cavity and communicates with a gas source outside the tank body, and a plurality of gas outlet nozzles are arranged on the gas distribution pipeline; the flow guide mechanism is arranged in the stirring cavity and located on an airflow path of the air outlet nozzle, and the flow guide mechanism is configured to convert airflow sprayed out of the air outlet nozzle into a vortex field driving cooling liquid to rotate and roll in the preset direction; therefore, the process quality and the production efficiency of machining cooling liquid preparation are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mixing and stirring processing, and discloses a kind of mixed cooling liquid pneumatic stirring device. BACKGROUND

[0002] In the preparation process of machining coolant, in order to meet the rust and lubrication requirements of different workpiece materials, it is usually necessary to mix and adjust a plurality of base liquids (such as rust-proof oil, additives, water, etc.) in a specific proportion. This requires that the stirring device can quickly and uniformly mix liquids of different densities to ensure stable performance of the coolant. However, the existing mixing methods mostly rely on manual stirring or motor-driven mechanical stirring, but manual stirring is inefficient and difficult to ensure uniform mixing, while mechanical stirring devices are common, but their structure is complex, bulky, and the stirring paddle is difficult to clean, which can easily cause cross contamination when changing liquid types.

[0003] Therefore, in order to solve the above problems of mechanical stirring, pneumatic stirring technology driven by gas power instead of motor is gradually applied in industrial production, its principle is mainly to use the buoyancy and shear force generated by the rising of gas in liquid to drive fluid rolling. However, the existing conventional pneumatic stirring device is limited by the design of its gas distribution structure, and still has some technical defects in actual application, the problem is that:

[0004] First, the conventional device mostly uses straight-through gas distribution pipe for direct aeration, the vertical rising path of gas bubbles is relatively single, lacks effective fluid guiding mechanism, and it is difficult to form omnidirectional circulating vortex in the tank, resulting in a large number of stirring dead angles at the bottom and edge of the tank, and poor mixing effect; second, the gas path design often lacks perfect protection mechanism, when the gas source is closed or the pressure fluctuates, the coolant is easily backflowed to the gas distribution pipe under the action of gravity or siphon, causing pipe corrosion or nozzle blockage, thereby affecting the actual use effect of the device. SUMMARY

[0005] The present application aims to provide a kind of mixed cooling liquid pneumatic stirring device to at least solve one of the above problems in the prior art.

[0006] Specifically, the present application is realized by the following technical scheme:

[0007] The application discloses a kind of mixed cooling liquid pneumatic stirring device, including: stirring box, inside is formed with for accommodating cooling liquid stirring cavity, the bottom of the stirring box is equipped with liquid outlet;Liquid inlet component is set to the stirring box, for inputting cooling medium into the stirring cavity;Pneumatic disturbance component includes gas distribution pipeline and flow guide mechanism, the gas distribution pipeline is set to the bottom area of the stirring cavity and is communicated with tank body outside gas source, the gas distribution pipeline is equipped with several gas outlet nozzles;The flow guide mechanism is set to the stirring cavity and is located on the airflow path of the gas outlet nozzle, the flow guide mechanism is configured to convert the airflow emitted from the gas outlet nozzle into vortex field that drives cooling liquid to rotate and roll in preset direction.

[0008] Further, the flow guide mechanism includes a plurality of flow guide plates arranged in an annular array at the bottom of the inner wall of the stirring cavity, the flow guide plates are inclined relative to the radial section of the stirring cavity, and a rotational flow channel for gas-liquid mixed fluid to pass through is formed between adjacent two flow guide plates.

[0009] Further, the gas distribution pipeline includes a main air inlet pipe and an annular gas distribution pipe communicated with the main air inlet pipe, the main air inlet pipe is vertically attached to the inner wall of the stirring cavity, and the air inlet end thereof extends to the outside of the stirring box, the annular gas distribution pipe is horizontally located at the bottom of the stirring cavity, a plurality of gas outlet nozzles are spaced apart along the circumference of the pipe body of the annular gas distribution pipe, and the jet direction of the gas outlet nozzles is towards the bottom inlet side of the rotational flow channel.

[0010] Further, the inside of each of the gas outlet nozzles is provided with a check valve assembly, the check valve assembly includes a one-way valve core arranged in the nozzle, the one-way valve core is configured to open under the action of gas source pressure and automatically close the gas outlet nozzle when the gas source pressure disappears.

[0011] Further, the liquid inlet component includes a flow collection pipe vertically arranged in the stirring cavity, the input end of the flow collection pipe is connected with a plurality of independent liquid inlet interface pipes, the input end of each liquid inlet interface pipe extends to the outside of the stirring box, and a flow regulating valve is arranged between each liquid inlet interface pipe and the flow collection pipe.

[0012] Further, the pneumatic disturbance component further includes a central flow guide cylinder connected to the inside of the stirring cavity through a support and located above the flow guide plates, the central flow guide cylinder is vertically arranged and open at both ends, and the bottom opening thereof is located at the upper part of the annular gas distribution pipe, and the gas outlet nozzles on the annular gas distribution pipe are located within the vertical projection range of the bottom opening of the central flow guide cylinder.

[0013] Further, the bottom of the stirring box is in an inverted conical structure, and a liquid outlet pipe is further arranged at the lowest point of the bottom of the stirring box, and the gas distribution pipeline is arranged above the bottom of the stirring cavity through a support and forms a suspended liquid discharge gap with the bottom of the stirring cavity.

[0014] Further, the top of the stirring box body is provided with a sealing cover plate, an exhaust pressure relief valve and a gas-liquid separation net are arranged on the sealing cover plate, the gas-liquid separation net covers the inlet end of the exhaust pressure relief valve and is used for intercepting cooling liquid mist discharged with the gas flow.

[0015] Further, a push handle is arranged on the upper part of the side of the stirring box body, and a moving wheel is connected to the bottom of the stirring box body.

[0016] Compared with the prior art, the present application has at least the following advantages and beneficial effects:

[0017] The present application sets up a special aerodynamic disturbance assembly and a flow guide mechanism in the stirring cavity, uses the passive flow guide principle to convert the single vertical jet flow sprayed by the air outlet nozzle into a strong vortex field driving the liquid to rotate and roll in the preset direction, completely eliminates the stirring dead angle at the bottom of the box body while abandoning the traditional motor mechanical stirring structure to avoid cross contamination, realizes the rapid and uniform emulsification of cooling liquids with different densities, and cooperates with the pressure response type check valve built in the air outlet nozzle to effectively prevent the liquid backflow caused by the gas source being closed from causing pipeline corrosion and blockage, and significantly improves the reliability and service life of the device operation.

[0018] At the same time, through the integrated multi-liquid convergence flow inlet assembly, online accurate proportioning and automatic addition of various basic cooling media are realized, and the problem of complicated and insufficient precision of traditional manual proportioning is solved; in combination with the gas-lifting type vertical circulation effect generated by the central flow guide cylinder, the suspended liquid discharge design of the inverted conical bottom and the gas-liquid separation discharge structure, the three-dimensional convection efficiency in the cavity is further strengthened, and the zero residual discharge of waste liquid and environmental cleanliness during the whole operation process are ensured, which greatly improves the process quality and production efficiency of the mechanical machining cooling liquid preparation. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0020] Figure 1 It is an internal structure diagram of the stirring box body of the present application;

[0021] Figure 2 It is a top view schematic diagram of the annular gas distribution pipe of the present application;

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the convergence pipe of the present application.

[0023] In the above-mentioned drawings, the reference signs represent: 1, stirring box; 21, main air inlet pipe; 22, annular air distribution pipe; 221, air outlet nozzle; 23, guide plate; 24, central guide cylinder; 31, flow collecting pipe; 32, liquid inlet interface pipe; 33, flow regulating valve; 4, liquid outlet pipe; 5, sealing cover plate; 51, exhaust pressure relief valve; 511, gas-liquid separation net; 6, push handle; 7, moving wheel. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with embodiments. The illustrative embodiments of the present application and their descriptions are only used to explain the present application and not as a limitation to the present application. The following described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0025] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without these specific details. In other embodiments, well-known structures, materials or methods have not been specifically described in order to avoid obscuring the present application. The materials, instruments and reagents used in the following embodiments, unless otherwise specified, can be obtained from commercial channels. The technical means used in the embodiments, unless otherwise specified, are conventional means known to those skilled in the art.

[0026] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0027] Embodiments:

[0028] Please refer to Figures 1 to 3As shown, the embodiment discloses a kind of mixed cooling liquid pneumatic stirring device, including: stirring box 1, it is formed with for accommodating cooling liquid stirring cavity in inside, the bottom of stirring box 1 is equipped with liquid outlet;Liquid inlet component is set to stirring box 1, for inputting cooling medium into stirring cavity;Pneumatic flow disturbance component, including gas distribution pipeline and flow guide mechanism, gas distribution pipeline is set to the bottom area of stirring cavity and is communicated with the gas source outside tank body, gas distribution pipeline is equipped with several gas outlet nozzles 221;Flow guide mechanism is set to stirring cavity and is located on the airflow path of gas outlet nozzle 221, flow guide mechanism is configured as the vortex field that the gas stream spouted from gas outlet nozzle 221 is converted into driving cooling liquid to rotate and roll in preset direction.

[0029] For ease of understanding, some key technical features in the embodiment are described here:

[0030] Pneumatic flow disturbance component is one of the core components of the device, which introduces external gas source, and realizes the stirring mixing of cooling liquid by using the disturbance of gas flow in liquid.

[0031] Gas distribution pipeline is set to the bottom area of stirring cavity and is communicated with the gas source outside tank body, for conveying gas stream into stirring cavity;Gas distribution pipeline is equipped with several gas outlet nozzles 221, and gas enters cooling liquid through these nozzles.

[0032] Flow guide mechanism is set to stirring cavity and is located on the airflow path of gas outlet nozzle 221;The key role of flow guide mechanism is to guide and convert the gas stream spouted from gas outlet nozzle 221, so that it forms vortex field driving cooling liquid to rotate and roll in preset direction, so as to realize mixing.

[0033] Therefore, for the technical problems that the existing conventional pneumatic stirring device adopts straight-through type gas distribution pipeline to directly aerate, the vertical rising path of gas bubble is single, and there is lack of effective fluid guide mechanism, resulting in a large number of stirring dead angles at the bottom and edge of the tank, and full-range uniform mixing cannot be realized;And the problems of complex structure, bulky volume and complicated cleaning of existing mechanical stirring device. The scheme is characterized in that pneumatic flow disturbance component is arranged in stirring box 1, and flow guide mechanism is specially configured on the airflow path of gas outlet nozzle 221, and the gas stream spouted from gas outlet nozzle 221 is converted into vortex field driving cooling liquid to rotate and roll in preset direction by flow guide mechanism. Therefore, the traditional motor-driven paddle structure is abandoned, and the single vertical flow state of traditional pneumatic stirring is changed, so as to effectively solve the technical problems of easy pollution and difficult cleaning of mechanical stirring and poor mixing effect of conventional pneumatic stirring.

[0034] Specifically, during the operation of the device, the cooling medium to be stirred is first input into the stirring cavity in the stirring box 1 through the liquid inlet assembly, and then the external gas source enters the gas distribution pipeline. Since the gas distribution pipeline is arranged at the bottom region of the stirring cavity, the compressed gas is sprayed out through the gas outlet nozzle 221 with a certain initial velocity. In this process, the high-speed airflow sprayed out of the gas outlet nozzle 221 does not directly vertically float out of the liquid surface as in the prior art, but first impacts or flows through the flow guide mechanism arranged on the airflow path. As a passive control element of fluid dynamics, the flow guide mechanism forcibly changes the movement trajectory and force direction of the gas bubbles, converts the vertical buoyancy and jet kinetic energy of the gas into lateral thrust or tangential shear force on the surrounding liquid, so that under the continuous power conversion action, the cooling liquid in the stirring cavity is driven to form a high-intensity vortex field in the preset direction (such as circumferential rotation or overall tumbling). The vortex field causes the liquid in the stirring cavity to produce turbulent motion, which can quickly lift the liquid at the bottom and fully penetrate and permeate, eliminating the stirring dead angle. Finally, the cooling liquid is rapidly and uniformly mixed without mechanical contact and motor driving, and is discharged through the liquid outlet after the mixing is completed.

[0035] Based on the above embodiment, an alternative mode is shown in Figure 1 The flow guide mechanism includes a plurality of flow guide plates 23 arranged in an annular array at the bottom of the inner wall of the stirring cavity. The flow guide plates 23 are arranged obliquely relative to the radial section of the stirring cavity, and a rotational flow channel for gas-liquid mixed fluid to pass through is formed between adjacent two flow guide plates 23.

[0036] It should be noted that the flow guide plate 23 structure arranged in an annular array and arranged obliquely effectively solves the technical problem that the airflow energy is difficult to be efficiently converted into liquid rotational kinetic energy, and realizes the conversion of the vertical bubble buoyancy and impact force into horizontal rotational driving force without mechanical transmission components.

[0037] Specifically, during the operation of the device, since the plurality of flow guide plates 23 are arranged in an annular array at the inner wall or the bottom of the stirring cavity, and each flow guide plate 23 is arranged obliquely relative to the radial section of the stirring cavity (i.e., a non-zero angle is formed between the plate surface of the flow guide plate 23 and the radial vertical surface of the stirring cavity), a rotational flow channel with a specific guide angle is defined between adjacent two flow guide plates 23. Therefore, when the cooling liquid mixed with bubbles flows upward under the action of gas pressure and impacts the region, the fluid cannot pass vertically, but is forced to enter the above-mentioned rotational flow channel.

[0038] It can be understood that, in this process, the inclined guide plate 23 exerts a reaction force on the fluid, which has a forced guiding effect on the fluid, forcing the flow path of the fluid to deflect, thereby decomposing the original vertical upward movement vector of the fluid to generate a significant tangential velocity component along the circumference of the stirring cavity. With all the rotational flow channels in the annular array continuously ejecting fluid with tangential velocity, the streams of fluid converge and superimpose on each other in the stirring cavity to form a resultant force, thereby driving the cooling liquid in the entire cavity to rotate at high speed around the central axis of the stirring cavity, forming a stable macroscopic aerodynamic rotational flow, which not only prolongs the residence path of the gas bubbles in the liquid, but also greatly improves the shearing efficiency between the fluid layers, thereby achieving efficient mixing.

[0039] It can also be understood that, in the present solution, the guide plate 23 is a structural member for changing the flow direction and / or speed of the fluid, which can be a sheet-shaped structure fixed to the inner wall of the stirring cavity, such as a metal plate, a plastic plate or a composite material plate, or a blade with adjustable angle, which is adjusted by an external mechanism to adapt to cooling liquids of different viscosities or mixing requirements.

[0040] Moreover, the annular array distribution is to arrange the guide plates 23 uniformly or non-uniformly along the circumferential direction of the stirring cavity; and the guide plates 23 are arranged obliquely with respect to the radial cross section of the stirring cavity, and the oblique angle thereof can be pre-set as a fixed value, such as 30 degrees, 45 degrees or 60 degrees, to optimize the formation of the vortex field, or the oblique angle thereof can be variable, that is, the guide plates 23 and the inner wall of the stirring wall are connected through a hinge or a sliding rail mechanism, so as to be adjusted according to the type of the cooling liquid and the stirring intensity requirement.

[0041] In addition, for the rotational flow channel formed between the two adjacent guide plates 23 for the gas-liquid mixed fluid to pass through, the width and shape of the rotational flow channel can be designed by the spacing and geometry of the guide plates 23, for example, the channel can be of equal width, or of gradually changing width, and the surface thereof can also be specially treated, such as polishing or coating with low-friction material, to reduce the fluid resistance and improve the rotational flow efficiency.

[0042] It can be understood that, during the gas injection stirring, the bubble distribution can be uneven, which cannot be effectively guided to the rotational flow channel of the guide mechanism, resulting in poor stirring effect and existence of stirring dead angle. Therefore, the present embodiment further proposes a preferred implementation manner, that is, as shown in Figure 2As shown, the air distribution pipeline includes a main air inlet pipe 21 and an annular air distribution pipe 22 in communication with the main air inlet pipe 21, the main air inlet pipe 21 is vertically attached to the inner wall of the stirring cavity, and its air inlet end extends to the outside of the stirring box 1, the annular air distribution pipe 22 is horizontally located at the bottom of the stirring cavity, and a plurality of air outlet nozzles 221 are distributed along the circumference of the annular air distribution pipe 22 to form an annular air curtain at the bottom of the stirring cavity, and the jet direction of the air outlet nozzle 221 is directed towards the bottom inlet side of the cyclone passage.

[0043] Obviously, the present scheme effectively solves the technical problems of small gas coverage area, insufficient fluid power in the edge area of the bottom of the stirring cavity, and limited gas-liquid contact area caused by traditional single-pipe point-type aeration by adopting a combined air distribution structure including a main air inlet pipe 21 and an annular air distribution pipe 22, and cooperating with the specific directional configuration of the air outlet nozzle 221, realizing uniform air distribution in the full range of the bottom of the stirring cavity.

[0044] Specifically, in terms of the layout of the air distribution system, the device does not use a directly inserted hose, but a main air inlet pipe 21 that is vertically attached to the inner wall of the stirring cavity. This arrangement not only ensures the smooth introduction of the gas source into the bottom, but also maximizes the reduction of the obstruction of the pipeline to the liquid flow in the cavity. The compressed gas enters the annular air distribution pipe 22, which is horizontally located at the bottom of the stirring cavity, through the main air inlet pipe 21. Since the annular air distribution pipe 22 extends along the circumference, the gas pressure is rapidly and uniformly distributed in the pipe. Then, the gas is simultaneously ejected from the plurality of air outlet nozzles 221 distributed along the circumference of the annular air distribution pipe 22. Since the nozzles are densely arranged in the circumferential direction, the ejected high-pressure gas stream forms multiple independent jets in a microscopic sense and converges into a continuous and rising annular air curtain. This annular air curtain widely covers the stirring area from the bottom, significantly increasing the specific surface area of gas-liquid contact. More importantly, since the jet direction of the air outlet nozzle 221 is directed towards the bottom inlet side of the cyclone passage, it means that the ejected high-speed gas stream is precisely directed to the action area of the flow guide mechanism. The gas stream directly impacts or enters the cyclone passage, thereby avoiding the dissipation of gas flow energy in the ineffective area. It ensures that the kinetic energy of the gas is maximally used to drive the liquid into a cyclone state, thereby strengthening the starting speed and mixing efficiency of the bottom fluid, significantly improving the mixing uniformity and efficiency of the cooling liquid, and solving the problems of uneven bubble distribution and insufficient guidance.

[0045] In addition, in this embodiment, it is also necessary to supplement that the main air inlet pipe 21 can be made of corrosion-resistant metal pipe material, such as stainless steel pipe, or high-strength engineering plastic pipe, which is connected to the annular air distribution pipe 22 by welding, threaded connection or flange connection; and the annular air distribution pipe 22 can also be made of stainless steel or corrosion-resistant plastic material to adapt to the chemical properties of the cooling medium.

[0046] The main air inlet pipe 21 is vertically attached to the inner wall of the stirring cavity, aiming to minimize its interference with the fluid movement inside the stirring cavity and save internal space. It can be fixed on the inner wall of the stirring cavity by a clamp or a support, or installed through a reserved passage on the wall of the stirring tank 1, and its air inlet end extends to the outside of the stirring tank 1 for easy connection with an external air source (such as an air compressor or a high-pressure gas cylinder). The connection end can be configured as a quick connector, a threaded interface or a flange interface to adapt to different air source connection methods.

[0047] The annular air distribution pipe 22 is horizontally located at the bottom of the stirring cavity to ensure that the gas can be uniformly released from the entire bottom area of the stirring cavity, avoiding excessive or insufficient gas concentration in local areas. The annular air distribution pipe 22 can be supported at the bottom of the stirring cavity by a support.

[0048] The gas outlet nozzle 221 can be a simple drilled hole or a specially designed dedicated nozzle, such as a micro-hole nozzle or a jet nozzle, to control the size and jet intensity of the gas bubbles. The gas outlet nozzle 221 can be optimally designed in terms of interval distribution according to the size of the stirring cavity and the required stirring intensity, such as equal angle or equal distance distribution.

[0049] In some embodiments, a check valve assembly is provided at each of the gas outlet nozzles 221. The check valve assembly includes a one-way valve core arranged inside the nozzle. The one-way valve core is configured to open under the action of the gas source pressure and automatically close the gas outlet nozzle 221 when the gas source pressure disappears.

[0050] It can be understood that, based on the above embodiments, the gas flow is injected through the gas outlet nozzle 221 to drive stirring. However, during the implementation process, when the gas source is closed or the pressure fluctuates, the cooling liquid is easily backflowed into the air distribution pipeline under the action of gravity or siphon effect, causing pipeline corrosion or nozzle blockage, affecting the normal operation and service life of the device. Therefore, the check valve assembly is integrated inside the gas outlet nozzle 221 to effectively solve the technical problems of pipeline corrosion, nozzle blockage and cross-contamination of liquid when the device is restarted due to the backflow of cooling liquid into the air distribution pipeline under the action of gravity or siphon effect in the shutdown state of the conventional pneumatic stirring device.

[0051] Specifically, during the device working start-up phase, when the external high-pressure gas is filled into the air distribution pipeline, the gas pressure acting on the input side of the one-way valve core overcomes the reset resistance (such as spring force or self-weight) of the valve core, pushing the one-way valve core to the open position, thereby opening the air path, so that the compressed air can be smoothly injected from the gas outlet nozzle 221 into the liquid for stirring;

[0052] Conversely, when the agitation operation is completed and the gas source is turned off, or the pressure fluctuation of the gas circuit system causes the pressure inside the pipe to be lower than the external hydraulic pressure, the gas source thrust disappears. At this time, the check valve core rapidly reverses and moves under the combined action of the reset force and the external cooling liquid static water pressure, and presses the sealing surface, automatically closing the gas outlet nozzle 221. This action physically cuts off the liquid return path in an instant, forming a reliable sealing isolation interface, ensuring that the cooling liquid in the stirring cavity cannot penetrate into the interior of the gas distribution pipe, thereby keeping the interior of the pipe dry and clean, prolonging the service life of the device.

[0053] It can also be understood that in some embodiments, the check valve assembly can be implemented in various structural forms, for example, it can be a miniature valve built into the gas outlet nozzle 221, with a spring-preloaded valve flap or ball to control the on-off of the fluid; when the gas source pressure reaches the preset value, the gas pressure overcomes the spring force to push the valve flap or ball to open, allowing the gas to be sprayed out; when the gas source pressure is lower than the preset value or disappears, the spring force or the liquid self-gravity, siphonage will push the valve flap or ball back to the original position, thereby closing the gas outlet nozzle 221. The specific structure of the check valve core can include but is not limited to: a spherical valve core that is pushed away from the valve seat under the action of gas flow pressure and falls back to the valve seat to achieve sealing under the action of gravity or spring force when there is no gas flow pressure; a conical valve core that is lifted under the action of gas flow by cooperating with the conical sealing surface of the valve seat and resets to seal when the gas flow disappears; or it can also be a diaphragm or flap made of elastic material that is deformed to open under the action of gas flow pressure and restores to the original state to close when there is no gas flow pressure.

[0054] As a further embodiment of the above embodiment, please refer to Figure 2 and Figure 3 As shown in the drawings, the liquid inlet assembly includes a collecting pipe 31 vertically arranged in the stirring cavity, and a plurality of independent liquid inlet interface pipes 32 are connected to the input end of the collecting pipe 31. The input end of each liquid inlet interface pipe 32 extends to the outside of the stirring box body 1, and a flow regulating valve 33 is arranged between each liquid inlet interface pipe 32 and the collecting pipe 31, so as to simultaneously or stepwise add a plurality of different cooling liquids according to a preset ratio.

[0055] It can be understood that in actual stamping and drawing processing technology, the performance indicators (such as lubricity, rust prevention, and thermal conductivity) of the cooling liquid required for workpieces of different materials (such as stainless steel, copper material, aluminum alloy, etc.) are completely different. Therefore, in production, a single liquid cannot be used, and it is necessary to mix rust-proof oil, pure water, and various additives in a specific proportion. However, the existing conventional stirring device usually only has a single liquid injection port, lacks a multi-path liquid inlet and mixing mechanism, which requires the operator to manually measure and mix multiple liquids outside the device in advance, or pour them into the box one by one. This method not only makes it difficult to control the mixing accuracy due to manual operation errors, seriously affecting the consistency of the cooling liquid, but also cannot meet the process requirements of online real-time adjustment of the types and proportions of mixed media.

[0056] Therefore, the embodiment is configured to have an integrated liquid inlet assembly including a manifold 31 and a flow regulating valve 33, effectively solving the technical problems of manual mixing complexity, insufficient accuracy, and inability to realize online mixing caused by the lack of multi-medium integrated addition structure in the prior art when facing complex cooling processes.

[0057] Specifically, during operation, the containers storing different cooling media (such as liquid tanks storing oily media, aqueous media, and auxiliary additives, respectively) are first connected to the input ends of the independent liquid inlet interface pipes 32 extending outside the stirring box 1, and then the flow regulating valves 33 between the liquid inlet interface pipes 32 and the manifold 31 are adjusted by the operator or the control system according to the material properties (such as SUS304, AL, Cu, etc.) of the current workpiece and the cooling process formula requirements. During this process, by accurately controlling the opening degree or on-off state of the valves in different pipelines, the flow of the media in each branch can be individually controlled, so that the allowed multiple different cooling liquids are first gathered into the manifold 31 vertically arranged inside the stirring cavity under the action of pressure or gravity. The manifold 31 serves as a pre-mixing channel, allowing multiple media to contact and merge in the limited space inside the pipe before entering the wide stirring cavity body. Then, the media are directly injected into the stirring cavity along the manifold 31, thereby realizing the simultaneous or step-by-step addition of multiple cooling media in a closed pipeline. This not only avoids the risk of manual contact with chemical liquids, but also ensures the accuracy of the cooling liquid formula and the efficiency of the mixing process, thereby solving the problems of uneven mixing and unstable performance caused by inaccurate liquid input ratio at the source, significantly improving the quality and stability of the mixed cooling liquid, simplifying the operation process, reducing the complexity of manual intervention, and providing reliable protection for the preparation of high-performance cooling liquid.

[0058] It can also be understood that in some embodiments, the flow regulating valve 33 can be a manually operated ball valve or needle valve, by rotating the handle to adjust the opening of the valve, thereby changing the cross-sectional area of the fluid passing through, and then controlling the flow; In addition, electric regulating valve or proportional valve can also be used, for example, through external control system (such as PLC) for precise automatic flow control to meet the needs of higher precision and automation. In other words, any valve assembly that can achieve the above flow regulating function can be applied according to the actual situation, and the specific structure and driving mode are not limited further.

[0059] As a further embodiment of the above embodiment, please refer to Figure 1 As shown in the figure, the pneumatic disturbance assembly further comprises a central guide cylinder 24 connected to the inside of the stirring cavity through a support and located above the guide plates 23. The central guide cylinder 24 is vertically arranged with open ends, and the bottom opening is located at the upper part of the annular air distribution pipe 22. The gas outlet nozzle 221 on the annular air distribution pipe 22 is located within the vertical projection range of the bottom opening of the central guide cylinder 24.

[0060] It should be noted that by introducing the central guide cylinder 24 and limiting its spatial projection relationship with the annular air distribution pipe 22, the technical problems of insufficient longitudinal convection intensity and difficult complete mixing of liquid layering caused by the free upward floating of bubbles in the conventional stirring device are effectively solved, and the vertical circulation efficiency in the stirring cavity is significantly enhanced.

[0061] Specifically, during operation of the device, since the gas outlet nozzle 221 on the annular air distribution pipe 22 is accurately limited within the vertical projection range of the bottom opening of the central guide cylinder 24, it means that most of the bubbles emitted from the nozzle will inevitably rise directly into the internal passage of the central guide cylinder 24 under the action of buoyancy, rather than dissipating to the outside of the guide cylinder. In this process, the inside of the central guide cylinder 24 is filled with a large amount of mixture of bubbles and cooling liquid, and the overall average density is significantly lower than the density of pure liquid without gas or with less gas outside the guide cylinder. According to the principle of fluid statics, the density difference between the inside and outside of the guide cylinder produces a large pressure gradient at the bottom of the guide cylinder, which causes the cooling liquid with a larger density outside to be continuously pressed into the cylinder from the bottom opening, and the bubbles are carried in the cylinder at a high speed. The gas is sprayed out of the cylinder, and then diffuses in all directions from the top of the guide cylinder under the action of gravity and sinks along the tank wall, and finally returns to the bottom to be sucked in again.

[0062] In this way, a strong central rising and peripheral descending circulation is constructed in the center of the stirring cavity by the above process, which superimposes the horizontal rotational flow field generated by the guide mechanism on the circulation flow field, forming a complex all-around three-dimensional stirring effect, ensuring that the heavy phase liquid at the bottom of the stirring cavity can be quickly lifted to the liquid surface, thereby realizing true dead corner-free deep mixing.

[0063] In some embodiments, the specific structure of the central draft tube 24 can be set as a reverse-tapered (or trumpet-shaped) structure with a cross-section gradually increasing from bottom to top, so that the cross-sectional area of the top opening is larger than that of the bottom opening; in this way, the smaller opening at the bottom of the draft tube forms a fluid acceleration zone, and the negative pressure suction effect at the inlet is enhanced by the reduced diameter structure, so that the heavy-density liquid deposited at the bottom can be sucked into the tube at a higher flow rate, thereby strengthening the starting shear force at the bottom; and the enlarged opening at the top of the draft tube forms a fluid diffusion zone, when the high-speed ascending gas-liquid mixed fluid reaches the top outlet, due to the increase of the flow area, the flow rate is gently reduced, so that it not only helps the mixed liquid to spread more widely to the surface layer around the stirring cavity, but also further avoids the phenomenon of liquid surface rolling and splashing caused by too high flow rate, so as to maintain the relative stability of the liquid surface while ensuring the circulation efficiency.

[0064] As a further embodiment of the above embodiment, as shown in Figure 1 , the bottom of the stirring box body 1 is in a reverse-tapered structure, and the lowest point of the bottom of the stirring box body 1 is provided with a liquid outlet pipe 4, and the annular gas distribution pipe 22 is arranged above the bottom of the stirring cavity through a support and forms a suspended liquid discharge gap with the bottom of the stirring cavity.

[0065] It can be understood that, by adopting the reverse-tapered bottom surface and the suspended gas distribution pipe structure, the technical problems of residual dead angle and difficulty in completely discharging the bottom deposits when discharging the liquid in the flat-bottomed container are effectively solved.

[0066] Specifically, the reverse-tapered structure naturally guides the residual liquid and sediment impurities to the lowest point of the bottom liquid outlet pipe 4 by using gravitational potential energy; and the suspended liquid discharge gap between the annular gas distribution pipe 22 and the bottom of the box physically eliminates the blockage of the pipe to the bottom liquid flow, ensuring that all fluids and potential bottom deposits can pass through the gap without any obstruction and be completely discharged from the liquid outlet when the cooling liquid is replaced or the equipment is cleaned, realizing true full emptying and zero residue, and avoiding cross contamination between different batches of cooling liquid.

[0067] As a further embodiment of the above embodiment, as shown in Figure 1 , the top of the stirring box body 1 is provided with a sealing cover plate 5, the sealing cover plate 5 is provided with an exhaust pressure relief valve and a gas-liquid separation net 511, the gas-liquid separation net 511 covers the inlet end of the exhaust pressure relief valve, and is used to intercept the cooling liquid mist discharged with the gas flow.

[0068] By integrating the combination structure of the exhaust pressure relief valve and the gas-liquid separation net 511 on the sealing cover plate 5, the technical problems of liquid splashing caused by violent rupture of gas bubbles and direct discharge of oil-containing paint mist polluting the environment during the pneumatic stirring process are effectively solved.

[0069] That is to say, by means of the sealing cover plate 5, the scheme builds a closed stirring space, thereby preventing liquid from overflowing, and when the cavity exhaust gas is discharged and decompressed through the exhaust decompression valve, the gas-liquid separation net 511 covering the front end of the valve port plays a key filtering blocking role, which is configured to allow excess gas to pass smoothly, while effectively intercepting and condensing the tiny cooling liquid mist or oil mist mixed in the gas flow, so that it flows back and drops into the stirring cavity under the action of gravity, thereby maintaining the safe balance of the cavity pressure while realizing the recycling and clean discharge of the cooling liquid.

[0070] It can be understood that in some embodiments, the exhaust decompression valve functions to automatically open and discharge excess gas when the gas pressure in the stirring cavity reaches a preset value during stirring, thereby maintaining the stability of the pressure in the stirring cavity and avoiding affecting the stirring effect or causing safety hazards due to excessive pressure. Therefore, preferably, the exhaust decompression valve can be a spring safety valve, a diaphragm pressure relief valve, or a weight valve, etc. The specific mechanical structure thereof is not strictly limited in the present application, and those skilled in the art can make appropriate selection according to the actual situation.

[0071] As a further embodiment of the above embodiment, please refer to Figure 1 As shown in the figure, the side upper part of the stirring box body 1 is also provided with a push handle 6, and the bottom of the stirring box body 1 is connected with a mobile wheel 7.

[0072] It should be understood that the main function of the push handle 6 is to facilitate manual pushing or pulling, so it is a fixed handle, which can be a U-shaped or L-shaped metal rod, welded or bolted to the side upper part of the stirring box body 1. Its size and shape should conform to ergonomics for easy gripping; and the push handle 6 is arranged on the side upper part of the stirring box body 1 to ensure that it is at a height convenient for the operator to grip when standing, facilitating the operator to exert force.

[0073] The mobile wheel 7 is a wheeled structure for moving the device, so it can be a universal wheel to facilitate the movement of the device, or the mobile wheel 7 can also be replaced by a directional wheel with a brake or other structure.

[0074] Therefore, by configuring the push handle 6 and the mobile wheel 7 on the outside of the stirring box body 1, the operator can easily push the entire device to different machine tool stations for on-site liquid replenishment even in the high-load state of the box filled with cooling liquid, greatly improving the flexibility of equipment use and the convenience of on-site operation.

[0075] Through the technical scheme, the push handle 6 is arranged on the upper side of the stirring box body 1, and the moving wheels 7 are connected around the bottom of the stirring box body 1, so that the problem of inconvenient movement and low operation efficiency caused by the large size and fixed arrangement of the existing stirring device is effectively solved. Specifically, the push handle 6 provides an ergonomic gripping point for the operator, enabling the operator to easily apply a pushing or pulling force, avoiding the inconvenience or contamination that may be caused by direct contact with the box body. At the same time, the moving wheels 7 significantly reduce the resistance between the device and the ground through rolling friction, enabling the entire stirring device to be easily moved between different positions without the need for additional manpower or handling tools. This design greatly improves the flexibility and operation efficiency of the device, especially when frequent changes of work area or maintenance and cleaning are required, the device position can be quickly and conveniently adjusted, thereby optimizing the preparation process of the cooling liquid and reducing the labor intensity of the operator

[0076] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the present specification are schematic drawings, which are only used to cooperate with the disclosed content of the specification for understanding and reading by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content.

[0077] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in the present specification are only for the purpose of clear understanding of the description, and are not used to limit the scope of the implementation of the present application. The change or adjustment of the relative relationship without substantial change of technical content is also considered as the implementation scope of the present application.

[0078] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation based on the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A hybrid cooling fluid aerodynamic agitator, comprising: The utility model relates to a cooling tank with aeration and stirring function, comprising: a stirring box body, an inside of which is formed with a stirring cavity for containing cooling liquid, the bottom of the stirring box body being provided with a liquid outlet; a liquid inlet assembly arranged on the stirring box body for inputting cooling medium into the stirring cavity; a pneumatic flow disturbance assembly, comprising a gas distribution pipeline and a flow guide mechanism, the gas distribution pipeline being arranged at the bottom area of the stirring cavity and being communicated with a gas source outside the tank body, a plurality of gas outlet nozzles being arranged on the gas distribution pipeline; the flow guide mechanism being arranged in the stirring cavity and being located on the airflow path of the gas outlet nozzles, the flow guide mechanism being configured to convert the airflow ejected from the gas outlet nozzles into a vortex field for driving the cooling liquid to rotate and tumble in a preset direction.

2. A hybrid cooling fluid aerodynamic mixing device according to claim 1, wherein, the flow guide mechanism comprises a plurality of flow guide plates arranged in an annular array at the bottom of the inner wall of the stirring cavity, the flow guide plates being arranged obliquely relative to the radial section of the stirring cavity, and a rotational flow channel for passing gas-liquid mixed fluid being formed between any two adjacent flow guide plates.

3. A hybrid cooling fluid aerodynamic mixing device according to claim 2, wherein, the gas distribution pipeline comprises a main gas inlet pipe and an annular gas distribution pipe communicated with the main gas inlet pipe, the main gas inlet pipe being vertically attached to the inner wall of the stirring cavity and having an inlet end extending to the outside of the stirring box body, the annular gas distribution pipe being horizontally located at the bottom of the stirring cavity, a plurality of gas outlet nozzles being spaced apart and arranged along the circumference of the annular gas distribution pipe, and the ejection direction of the gas outlet nozzles being towards the bottom inlet side of the rotational flow channel.

4. A hybrid cooling fluid aerodynamic mixing device according to claim 3, wherein, the inside of each gas outlet nozzle is provided with a check valve assembly, the check valve assembly comprising a one-way valve core arranged in the nozzle, the one-way valve core being configured to open under the action of gas source pressure and to automatically close the gas outlet nozzle when the gas source pressure disappears.

5. The hybrid cooling fluid aerodynamic mixing device of claim 1, wherein, the liquid inlet assembly comprises a vertical flow collecting pipe arranged in the stirring cavity, a plurality of independent liquid inlet interface pipes being connected to the input end of the flow collecting pipe, the input end of each liquid inlet interface pipe extending to the outside of the stirring box body, and a flow regulating valve being arranged between each liquid inlet interface pipe and the flow collecting pipe.

6. A hybrid cooling fluid aerodynamic mixing device according to claim 3, wherein, the pneumatic flow disturbance assembly further comprises a central flow guide cylinder connected to the inside of the stirring cavity by a support and located above the flow guide plates, the central flow guide cylinder being vertically arranged and having open ends at both ends, and the bottom opening of the central flow guide cylinder being located at the upper part of the annular gas distribution pipe, the gas outlet nozzles on the annular gas distribution pipe being located within the vertical projection range of the bottom opening of the central flow guide cylinder.

7. The cooling fluid pneumatic agitation device of claim 3, wherein, the bottom of the stirring box body is in an inverted conical structure, and a liquid outlet pipe is arranged at the lowest point of the bottom of the stirring box body, the annular gas distribution pipe being arranged above the bottom of the stirring cavity by a support and forming a suspended liquid discharge gap with the bottom of the stirring cavity.

8. The cooling fluid pneumatic agitation device of claim 1, wherein, a sealing cover plate is arranged at the top of the stirring box body, a gas discharge pressure relief valve and a gas-liquid separation net being arranged on the sealing cover plate, the gas-liquid separation net covering the inlet end of the gas discharge pressure relief valve for intercepting the cooling liquid mist discharged with the airflow.

9. The aerated cooling liquid stirring device according to any of claims 1-8, characterized in that, a handle is further arranged at the upper part of the side surface of the stirring box body, and a mobile wheel is connected to the bottom of the stirring box body.

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