A rapid dissolving and stirring device for powdered phosphate-free degreasing agent

Abstract

This utility model relates to the technical field of metal surface treatment equipment, and discloses a rapid dissolution and stirring device for powdered phosphorus-free degreasing agent. It includes a stirring tank, a power module one, a rotating shaft, a dissolution mechanism, and a stirring mechanism. The power module one is installed on the top of the stirring tank and drives the rotating shaft to rotate. The dissolution mechanism is located on the top of the stirring tank and includes an inclined buffer plate, a jet box, a stamping pipe, and an electric push rod. The inclined buffer plate buffers the powder, the jet box uses airflow to disperse the powder, and the electric push rod adjusts the angle of the stamping pipe nozzle via a universal joint to flush the liquid surface. The stirring mechanism includes stirring blades on the rotating shaft, a spiral stirrer, a scraper, and an arc-shaped auxiliary stirring paddle driven by the power module two on the outer wall of the stirring tank. This utility model achieves gas-liquid pre-dispersion through the dissolution mechanism, and, combined with the multi-dimensional mixing of the stirring mechanism, solves the problems of powder floating and clumping and stirring dead zones, thus improving dissolution efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of metal surface treatment equipment, and in particular to a rapid dissolution and stirring device for powdered phosphorus-free degreasing agent. Background Technology

[0002] As an environmentally friendly metal surface treatment material, powdered phosphate-free degreaser is widely used in modern industrial cleaning processes. To facilitate the transportation and storage of powdered phosphate-free degreaser, it exists in solid powder form. Before use, it needs to be dissolved and diluted in water to prepare a cleaning solution of a specific concentration for subsequent degreasing operations. Therefore, the dissolution efficiency of powdered phosphate-free degreaser directly affects the operating rhythm and cleaning effect of the production line.

[0003] In actual dissolution operations, due to the strong hygroscopicity and fine particle size of powdered phosphate-free degreasing agent, when workers directly add a large amount of powdered phosphate-free degreasing agent into the mixing container, the powdered phosphate-free degreasing agent floats on the water surface due to the surface tension of water and cannot sink. Or, the outer layer quickly absorbs water and gels upon contact with the water surface, forming a sealing layer. This causes the dry powder inside the powdered phosphate-free degreasing agent to be unable to contact the water and form insoluble clumps. The floating powdered phosphate-free degreasing agent and the clumped powdered phosphate-free degreasing agent are not only difficult to dissolve completely in a short time, but also adhere to the inner wall of the mixing container or settle at the bottom.

[0004] However, existing mixing equipment uses a single vertical axis mixing method. When rotating, the vertical axis mixing method can only drive the liquid to form a regular laminar flow or a central vortex in the mixing container. The flow field generated by the vertical axis mixing method is difficult to generate sufficient entrainment force for the powdered phosphate-free degreasing agent floating on the liquid surface. The vertical axis mixing method also cannot reach the sedimentation area at the bottom edge of the mixing container, resulting in mixing dead zones inside the mixing container. This makes it impossible to achieve efficient dispersion and shearing of the powdered phosphate-free degreasing agent in all directions, resulting in excessively long dissolution time and poor dissolution uniformity, which seriously restricts the efficiency of the powdered phosphate-free degreasing agent.

[0005] Therefore, this invention proposes a rapid dissolution and stirring device for powdered phosphorus-free degreasing agent to overcome the shortcomings of the prior art. Utility Model Content

[0006] In existing technologies, powdered phosphate-free degreasing agents, when directly added to water, either float on the surface due to surface tension or absorb water and gel to form insoluble clumps. Furthermore, existing stirring equipment often uses a single vertical axis stirring method, which makes it difficult to generate complex turbulence and creates sedimentation dead zones at the bottom edge of the stirring tank, resulting in low degreasing agent dissolution efficiency and poor mixing uniformity. This utility model aims to provide a structurally improved powdered phosphate-free degreasing agent rapid dissolution stirring device that can effectively solve the above problems through gas-liquid dual pre-dispersion and three-dimensional multi-dimensional stirring.

[0007] This utility model provides a rapid dissolving and stirring device for powdered phosphorus-free degreasing agent, including a stirring tank, a power module, a rotating shaft, a feed pipe, a dissolving mechanism, a conical bottom plate, and a stirring mechanism. The power module is fixedly installed on the top of the stirring tank, and the output end of the power module passes through the top of the stirring tank and is fixedly connected to the rotating shaft. The conical bottom plate is fixedly connected to the bottom of the stirring tank. The dissolving mechanism is located in the top area of ​​the stirring tank, and the stirring mechanism is located inside and on the outer wall of the stirring tank.

[0008] The dissolving mechanism includes an inclined buffer plate fixedly connected to the right side of the inner wall of the mixing tank and located below the feed pipe, an air jet box fixedly connected to the right side of the inner wall of the mixing tank and located below the inclined buffer plate, a stamping pipe connected to the front and rear sides of the top of the mixing tank, and an electric push rod fixedly connected to the right side of the top of the inner wall of the mixing tank. An air inlet pipe is connected to the right side of the air jet box. A nozzle is fixedly connected to one end of the stamping pipe facing the inside of the mixing tank. A universal joint is fixedly connected between the electric push rod and the adjacent nozzle.

[0009] Furthermore, the stirring mechanism includes a stirring blade fixedly connected to the upper part of the outer wall of the rotating shaft, a spiral stirrer fixedly connected to the lower part of the outer wall of the rotating shaft, a scraper fixedly connected to the bottom of the outer wall of the rotating shaft, and a second power module fixedly installed in the middle of the outer wall of the mixing tank. The output end of the second power module passes through the outer wall of the mixing tank and is fixedly connected to a stirring shaft. An arc-shaped auxiliary stirring paddle is fixedly connected to the outer wall of the stirring shaft. The first power module, the rotating shaft, the second power module, and the stirring shaft are combined through rotational motions in different dimensions.

[0010] Preferably, a guide vane is fixedly connected to the inner wall of the jet box. The guide vane is obliquely distributed along the direction of airflow ejection. The guide vane is used to guide the airflow entering the jet box to be blown evenly from the side of the jet box onto the falling powder material.

[0011] Preferably, the air inlet pipe is used to connect to an external air source to provide the airflow required to disperse the powder, and the pressurizing pipe is used to connect to an external clean water source to provide the high-pressure water flow required to rinse the powder on the liquid surface.

[0012] Preferably, the stirring blades are angled to generate vortices when rotating, and the spiral stirrer is configured to transport material from the bottom of the mixing tank upward to the upper region, thereby creating vertical convection.

[0013] Preferably, the bottom contour of the scraper is adapted to the shape of the inner wall of the conical base plate, the scraper can rotate to scrape off the sediment by conforming to the surface of the conical base plate, and the outer wall of the scraper is provided with a flow hole, which is evenly distributed along the length of the scraper to allow liquid to pass through and reduce fluid resistance.

[0014] Preferably, the second power module is evenly distributed along the middle of the outer wall of the mixing tank, and the second power module is capable of driving the mixing shaft and the arc-shaped auxiliary mixing blade to rotate independently of the rotating shaft.

[0015] Preferably, the outer wall of the arc-shaped auxiliary stirring paddle is provided with a second flow hole, which penetrates the surface of the arc-shaped auxiliary stirring paddle. The second flow hole is used to increase the micro-mixing effect and reduce the motor load during the stirring process.

[0016] Preferably, the structure formed by the second power module, the stirring shaft, and the arc-shaped auxiliary stirring blade is located vertically between the stirring blade and the spiral stirrer. The arc-shaped auxiliary stirring blade is used to laterally cut and disturb the vertical flow field in the middle of the mixing tank.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting up a dissolving mechanism, uses an inclined buffer plate to buffer the falling material, and the airflow blown out by the jet box disperses the falling powder. Combined with the oscillating punch nozzle driven by an electric push rod to wash the powder on the liquid surface at a wide angle, it solves the problem of low dissolution efficiency caused by the direct addition of powder degreasing agent to the mixing tank, resulting in accumulation, floating and clumping on the liquid surface. It makes the powder evenly dispersed before entering the water and quickly settles and wets after entering the water, effectively preventing clumping and improving dissolution efficiency from the source.

[0018] 2. This utility model, by setting up a multi-dimensional stirring mechanism, uses a rotating shaft to drive the top stirring blades, the middle spiral stirrer, and the bottom scraper to perform vertical mixing and bottom material lifting. In conjunction with the arc-shaped auxiliary stirring paddle driven by the side wall power module, it performs horizontal cutting. This solves the problems of sedimentation dead corners at the bottom of the mixing tank and insufficient mixing caused by a single flow field in the existing technology. It achieves the effects of disrupting the laminar flow of liquid, forming multi-dimensional turbulent mixing, eliminating stirring dead corners, and significantly accelerating the powder dissolution rate.

[0019] 3. This utility model solves the problem of high fluid resistance and high motor load caused by large-area stirring blades during rotation in the prior art by opening multiple flow holes on the bottom scraper and the surface of the arc-shaped auxiliary stirring blade. While ensuring the stirring area and effect, it effectively reduces fluid resistance, reduces motor operating load, extends equipment service life, and enhances micro-mixing effect by using pore jet. Attached Figure Description

[0020] Figure 1 This is a perspective view of a rapid dissolution and stirring device for a powdered phosphorus-free degreasing agent proposed in this utility model; Figure 2 This is a cross-sectional view of the conical bottom plate of a rapid dissolving and stirring device for a powdered phosphorus-free degreasing agent proposed in this utility model; Figure 3 This is a cross-sectional view of the jet box of a rapid dissolution and stirring device for a powdered phosphorus-free degreasing agent proposed in this utility model; Figure 4 This is a cross-sectional view of the mixing tank of a rapid dissolution and stirring device for a powdered phosphorus-free degreasing agent proposed in this utility model. Figure 5 This is a schematic diagram of the power module two of the rapid dissolution and stirring device for a powdered phosphorus-free degreasing agent proposed in this utility model.

[0021] Legend: 1. Mixing tank; 2. Power module one; 3. Rotating shaft; 4. Feed pipe; 5. Dissolving mechanism; 501. Inclined buffer plate; 502. Air jet box; 503. Guide vane; 504. Air inlet pipe; 505. Stamping pipe; 506. Nozzle; 507. Electric push rod; 508. Universal joint; 6. Conical base plate; 7. Mixing mechanism; 701. Mixing blade; 702. Spiral agitator; 703. Scraper; 704. Flow hole one; 705. Power module two; 706. Mixing shaft; 707. Arc-shaped auxiliary mixing paddle; 708. Flow hole two. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0023] Example: Please refer to Figures 1 to 5This utility model provides a rapid dissolution and stirring device for powdered phosphorus-free degreasing agent, which aims to solve the problems of powdered degreasing agent floating and clumping after entering water and the low dissolution efficiency caused by the existence of stirring dead corners inside the stirring tank 1 in the prior art.

[0024] Please refer to Figures 1 to 5 A rapid dissolving and stirring device for powdered phosphate-free degreasing agent includes a stirring tank 1, a power module 2, a rotating shaft 3, a feed pipe 4, a dissolving mechanism 5, a conical bottom plate 6, and a stirring mechanism 7. The power module 2 is fixedly installed on the top of the stirring tank 1, and the output end of the power module 2 passes through the top of the stirring tank 1 and is fixedly connected to the rotating shaft 3. The power module 2 is used to provide the power required for the rotation of the rotating shaft 3. The bottom of the stirring tank 1 is fixedly connected to the conical bottom plate 6, which is used to guide the flow of material inside the stirring tank 1 and reduce residue. The top right side of the stirring tank 1 is connected to the feed pipe 4, which is used for workers to add powdered phosphate-free degreasing agent. The dissolving mechanism 5 is located in the top area of ​​the stirring tank 1 and is located near the feed pipe 4. The stirring mechanism 7 is located inside and on the outer wall of the stirring tank 1. The dissolving mechanism 5 is used to pre-disperse the powder entering the stirring tank 1, and the stirring mechanism 7 is used to perform multi-dimensional mixing of the solution inside the stirring tank 1.

[0025] Please refer to Figure 3 and Figure 4 An inclined buffer plate 501 is fixedly connected to the right side of the inner wall of the mixing tank 1. The inclined buffer plate 501 is located directly below the feed pipe 4. The surface of the inclined buffer plate 501 is inclined and is used to receive and guide the powder to slide downwards. An air jet box 502 is fixedly connected to the right side of the inner wall of the mixing tank 1 and below the inclined buffer plate 501. The air jet box 502 has a cavity inside and an opening on the left side. Multiple guide vanes 503 are fixedly connected to the inner wall of the air jet box 502. The guide vanes 503 are arranged at an angle. The flow plate 503 guides the airflow towards the material drop area below the inclined buffer plate 501. The front and rear sides of the top of the mixing tank 1 are connected to the stamping pipe 505. The end of the stamping pipe 505 extends into the interior of the mixing tank 1. The end of the stamping pipe 505 is rotatably connected to the nozzle 506. An electric push rod 507 is fixedly connected to the top of the inner wall of the mixing tank 1 and adjacent to the stamping pipe 505. The output end of the electric push rod 507 is fixedly connected to the nozzle 506 through the universal joint 508. The extension and retraction movement of the electric push rod 507 drives the nozzle 506 to deflect around the end of the stamping pipe 505.

[0026] Please refer to Figure 2 and Figure 4The rotating shaft 3 is located on the central axis of the mixing tank 1. Multiple stirring blades 701 are fixedly connected to the upper part of the outer wall of the rotating shaft 3. The stirring blades 701 are evenly distributed circumferentially and the plate surface is inclined. A spiral stirrer 702 is fixedly connected to the lower part of the outer wall of the rotating shaft 3. The spiral stirrer 702 is in the shape of continuous spiral blades. The spiral direction of the spiral stirrer 702 is configured to generate an upward lifting force when rotating. Two scrapers 703 are fixedly connected to the bottom end of the rotating shaft 3. The two scrapers 703 are symmetrical about the center of the rotating shaft 3. The outer edge of the scraper 703 is closely fitted with the inner surface contour of the conical bottom plate 6. Multiple flow holes 704 are opened on the surface of the scraper 703. The flow holes 704 penetrate the plate body of the scraper 703.

[0027] Please refer to Figure 1 and Figure 5 Multiple power modules 705 are evenly arranged in the circumferential direction in the middle of the outer wall of the mixing tank 1. The power modules 705 are fixedly connected to the outer wall of the mixing tank 1 by bolts. The driving end of the power modules 705 is connected to the stirring shaft 706. The stirring shaft 706 horizontally penetrates the wall of the mixing tank 1 and extends into the interior. An arc-shaped auxiliary stirring paddle 707 is fixedly connected to one end of the stirring shaft 706 located inside the mixing tank 1. The arc-shaped auxiliary stirring paddle 707 has a curved plate-like structure. The vertical height of the arc-shaped auxiliary stirring paddle 707 is located between the stirring blade 701 and the spiral stirrer 702. Multiple flow holes 708 are opened on the surface of the arc-shaped auxiliary stirring paddle 707. The flow holes 708 penetrate the plate of the arc-shaped auxiliary stirring paddle 707.

[0028] In a preferred embodiment, in order to optimize the flow trajectory of gas inside the jet box 502 and ensure uniform powder dispersion, a plurality of guide vanes 503 are welded and fixed to the inner wall of the jet box 502. The plurality of guide vanes 503 are arranged at equal intervals in the inner cavity of the jet box 502. The surface of the guide vanes 503 is inclined along the direction of airflow from the air inlet pipe 504 to the opening of the jet box 502. The inclined guide vanes 503 guide and divert the high-speed airflow entering the jet box 502 to different areas. The airflow after being regulated by the guide vanes 503 can be blown from the left side of the jet box 502 toward the falling powder of phosphorus-free degreasing agent with uniform pressure and flow rate.

[0029] In a preferred embodiment, to eliminate sedimentation at the bottom of the mixing tank 1 and reduce the operating load of the equipment, the bottom edge shape of the scraper 703 is designed to be completely consistent with the inclination of the inner surface of the conical base plate 6. During rotation, the scraper 703 always adheres to the inner wall surface of the conical base plate 6 for rotating scraping. The scraper 703, which adheres to the rotating surface, can prevent undissolved powder from adhering and accumulating on the surface of the conical base plate 6. Multiple flow holes 704 are uniformly opened through the surface of the scraper 703. The flow holes 704 allow the liquid mixture at the bottom to pass through the scraper 703 during the stirring process. The liquid flow passing through the flow holes 704 can reduce the fluid resistance encountered by the scraper 703 during rotation and reduce the operating load of the power module 2.

[0030] In a preferred embodiment, to enhance the turbulence of the flow field in the middle of the mixing tank 1 and improve the mixing efficiency, multiple power modules 705 are evenly distributed around the central axis of the mixing tank 1 on the outer circumference of the mixing tank 1. The arc-shaped auxiliary stirring paddle 707 driven by the power module 705 is precisely positioned vertically in the area between the stirring blade 701 and the spiral stirrer 702. The arc-shaped auxiliary stirring paddle 707 in the middle area can laterally cut and disturb the liquid in the vertical stirring blind zone. Multiple flow holes 708 are opened through the surface of the arc-shaped auxiliary stirring paddle 707. The flow holes 708 utilize the pore structure to increase the micro-mixing effect of the liquid flowing through the stirring paddle and reduce the torque resistance of the stirring shaft 706.

[0031] In a preferred embodiment, in order to achieve dynamic adjustment of the spray angle to cover a wider liquid surface area, the fixed end of the electric push rod 507 is installed on the top of the inner wall of the mixing tank 1, and the telescopic end of the electric push rod 507 is fixedly connected to the side wall of the nozzle 506 through a universal joint 508. The water inlet end of the nozzle 506 and the water outlet end of the pressurizing pipe 505 are connected by a rotating seal. Activating the electric push rod 507 can drive the nozzle 506 to swing around the end of the pressurizing pipe 505 at multiple angles. The swinging nozzle 506 can change the landing position of the clean water spray, thereby flushing the powdered phosphate-free degreasing agent floating at different positions on the liquid surface into the water.

[0032] Working principle: During the dissolution of the powdered phosphate-free degreasing agent, the worker puts the powdered phosphate-free degreasing agent into the feed pipe 4. The powdered phosphate-free degreasing agent falls along the feed pipe 4 onto the surface of the inclined buffer plate 501. The inclined buffer plate 501 slows down the falling speed of the powder and makes the powder slide down the plate surface. At the same time, the external air source enters the jet box 502 through the air inlet pipe 504. Under the guidance of the guide plate 503, the gas is evenly sprayed out from the side of the jet box 502. The sprayed airflow blows away the powder that slides down from the inclined buffer plate 501, so that the powder is evenly distributed in a mist on the liquid surface in the mixing tank 1, avoiding the concentration and accumulation of powder. As the powder falls into the liquid, clean water from the outside is introduced into the pressurizing pipe 505 and sprayed out from the nozzle 506. The high-pressure water jet forces the powder floating on the liquid surface into the water. At this time, the electric push rod 507 is activated. The electric push rod 507 drives the nozzle 506 to swing through the universal joint 508, changing the water jet angle to ensure that all areas of the liquid surface at the top of the mixing tank 1 are covered by water, thus completing the initial wetting and settling of the powder. Subsequently, power module 1 (705) and power module 2 (705) are activated. Power module 1 (2) drives the rotating shaft 3 to rotate at high speed. The stirring blade 701 on the upper part of the rotating shaft 3 performs vortex stirring on the upper layer of mixture. The scraper 703 at the bottom rotates close to the conical bottom plate 6, scraping up the material that has settled at the bottom. The spiral stirrer 702 lifts the high-concentration mixture at the bottom upward, forming vertical convection. At the same time, power module 2 (705) drives the stirring shaft 706 and the arc-shaped auxiliary stirring paddle 707 to rotate. The arc-shaped auxiliary stirring paddle 707 cuts the vertical flow field laterally in the middle area of ​​the mixing tank 1, increasing the degree of fluid turbulence. Flow hole 1 (704) and flow hole 2 (708) allow liquid to pass through during the stirring process, forming fine jets to further disperse powder clumps. Through the above multi-dimensional synergistic stirring, the powdered phosphorus-free degreasing agent can be quickly and fully dissolved in water in a short time.

Claims

1. A powder phosphorus-free degreasing agent rapid-dissolution stirring device, characterized in that, The system includes a mixing tank (1), a power module (2), a rotating shaft (3), a feed pipe (4), a dissolving mechanism (5), a conical bottom plate (6), and a stirring mechanism (7). The power module (2) is fixedly installed on the top of the mixing tank (1). The output end of the power module (2) passes through the top of the mixing tank (1) and is fixedly connected to the rotating shaft (3). The conical bottom plate (6) is fixedly connected to the bottom of the mixing tank (1). The dissolving mechanism (5) is located in the top area of ​​the mixing tank (1). The dissolving mechanism (5) includes an inclined buffer plate (501) fixedly connected to the right side of the inner wall of the mixing tank (1) and located below the feed pipe (4), an air jet box (502) fixedly connected to the right side of the inner wall of the mixing tank (1) and located below the inclined buffer plate (501), a stamping pipe (505) connected to the front and rear sides of the top of the mixing tank (1), and two electric push rods (507) fixedly connected to the right side of the top of the inner wall of the mixing tank (1). An air inlet pipe (504) is connected to the right side of the air jet box (502). A nozzle (506) is fixedly connected to one end of the stamping pipe (505) facing the inside of the mixing tank (1). A universal joint (508) is fixedly connected between the electric push rod (507) and the adjacent nozzle (506).

2. A powder phosphorous-free debinding agent fast-dissolving stirring device according to claim 1, characterized in that, The stirring mechanism (7) includes multiple stirring blades (701) fixedly connected to the upper part of the outer wall of the rotating shaft (3), a spiral stirrer (702) fixedly connected to the lower part of the outer wall of the rotating shaft (3), two symmetrical scrapers (703) fixedly connected to the bottom of the outer wall of the rotating shaft (3), and multiple power modules (705) fixedly installed in the middle of the outer wall of the stirring tank (1). The output end of the power module (705) passes through the outer wall of the stirring tank (1) and is fixedly connected to a stirring shaft (706). An arc-shaped auxiliary stirring paddle (707) is fixedly connected to the outer wall of the stirring shaft (706).

3. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 1, characterized in that, The inner wall of the jet box (502) is fixedly connected with a plurality of guide vanes (503), which are used to guide the gas to be sprayed out evenly from the left side of the jet box (502).

4. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 1, characterized in that, The air inlet pipe (504) is used to connect to an external air source, and the stamping pipe (505) is used to connect to an external clean water source.

5. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 2, characterized in that, The stirring blade (701) is arranged at an angle, and the spiral stirrer (702) is used to transport the material at the bottom of the mixing tank (1) to the upper area.

6. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 2, characterized in that, The bottom contour of the scraper (703) is adapted to the inner wall shape of the conical base plate (6), and the outer wall of the scraper (703) is provided with a plurality of flow holes (704).

7. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 2, characterized in that, The second power module (705) is evenly distributed along the middle of the outer wall of the mixing tank (1).

8. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 2, characterized in that, The outer wall of the arc-shaped auxiliary stirring paddle (707) is provided with multiple flow holes (708).

9. The rapid dissolving and stirring device for powdered phosphate-free degreasing agent according to claim 8, characterized in that, The structure formed by the second power module (705), the stirring shaft (706), and the arc-shaped auxiliary stirring paddle (707) is located vertically between the stirring blade (701) and the spiral stirrer (702).

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