Paddle-free circulating mixing device for liquid materials

Abstract

The invention belongs to the technical field of liquid mixing and stirring, and particularly discloses a paddle-free type circulating mixing and stirring device for liquid materials, the paddle-free type circulating mixing and stirring device comprises a tank body and a circulating pump for providing power, the top of the tank body is provided with a feed port and a cover for opening and closing the feed port, and the bottom of the tank body is provided with a discharge pipe; a first circulating pipe is arranged at the upper part of the tank body; one end of the first circulating pipe is connected with a circulating pump; a second circulating pipe is arranged on the lower portion of the tank body, and the circulating pump can pump liquid on the lower portion of the tank body to the upper portion of the tank body in a reciprocating mode. According to the invention, a stirring paddle is thoroughly cancelled, so that the technical problem of corrosion of the stirring paddle is avoided, and the sampling process is safer and more reliable; in addition, the noise problem and the resonance risk caused by the adoption of a gear motor are also reduced; in addition, the paddle-free circulating mixing device also enables the liquid in the tank body to form a stronger vortex, and the vortex is high in strength, so that the mixing of the liquid can be accelerated, the mixing time can be shortened, and the mixing efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of liquid mixing, in particular to a paddle-free circulating mixing device for liquid materials. Background Art

[0002] In the material reaction process, a reactor is usually used to stir and mix the materials. The reactor includes a tank body and a stirring paddle arranged in the tank body. The tank body is also provided with a power component for driving the stirring paddle to rotate. The power component is generally a reduction motor. After different liquids are loaded into the tank body, the stirring paddle is driven to rotate by the power component to achieve mixing of the liquid in the tank body. However, the stirring paddle can generally only achieve mixing of liquids in the same layer, and it is difficult to achieve leveling between liquids in different layers. For example, the liquid at the bottom of the tank body is difficult to mix with the liquid at the top of the tank body, which leads to uneven and incomplete mixing in traditional reactors. In addition, since the liquid entering the reactor is usually acidic or alkaline liquid, and the stirring paddle is generally made of metal, there will be problems with corrosion of the stirring paddle.

[0003] To further understand the prior art, a search revealed that Chinese patent CN212492936U discloses a sealing device for a reactor, comprising a reactor having a rotating column fixedly mounted on the top of the reactor, a turntable mounted on the outer ring of the rotating column, a bracket mounted on the top of the rotating column, a drive motor mounted on the top of the bracket, a feed pipe connected to the right side of the top of the turntable, two support rods fixedly mounted on the bottom of the inner wall of the reactor, bearings mounted on the top of the support rods, a stirring shaft connected to the inner ring of the bearing, the top of the stirring shaft sequentially extending through the top of the reactor, the rotating column, and the bracket, and fixedly connected to the output shaft of the drive motor, a plurality of stirring blades evenly arranged on the outer ring of the stirring shaft, a pressure relief pipe connected to the top of the left side of the reactor, and an exhaust pipe connected to the top of the right side of the reactor, the exhaust port of the exhaust pipe being provided with a pressure gauge. Analysis revealed that, like conventional reactors, the prior art reactors also utilize a stirring paddle to achieve liquid mixing, and therefore suffer from the same problems of uneven and incomplete mixing and corrosion of the stirring paddles.

[0004] In order to further understand the prior art, after searching, the Chinese patent CN217221474U in the prior art discloses a bladeless liquid mixing reactor system, including a reactor body and a circulation pipe structure, a main circulation pipe is arranged at the vertical center axis position of the reactor body; a plurality of through holes are arranged on the surface of the main circulation pipe; each through hole is connected to the corresponding secondary circulation pipe; a plurality of circulation nozzles are arranged on the surface of the secondary circulation pipe; the liquid to be reacted enters the secondary circulation pipe through the main circulation pipe, and is sprayed into the inner cavity of the reactor from the circulation nozzle; the liquid at the bottom of the reactor can enter the reactor body again through the circulation pipe structure; a pipe is arranged at the bottom of the reactor to be connected to a circulation discharge pump outside the reactor; the other end of the circulation discharge pump is connected to a transfer tank; the bottom of the transfer tank is connected to a circulation feed pump through a pipe; the other end of the circulation feed pump is connected to the main circulation pipe through a pipe.

[0005] After analysis, it was found that although the above-mentioned bladeless liquid mixing reactor system used a circulation pipe to replace the stirring paddle, changing the traditional stirring paddle mixing method, the circulation pipe arranged in the reactor was also roughly the same in structure as the traditional stirring paddle, so there was also the technical problem of circulation pipe corrosion; in addition, its injection method could not form a strong vortex, so there would also be problems of uneven and incomplete liquid mixing, and the mixing efficiency was low. Summary of the Invention

[0006] In view of the problems of uneven mixing, low mixing efficiency and corrosion of stirring paddles in the existing reactor, the present invention provides a paddle-free circulating mixing device for liquid materials.

[0007] The technical solution adopted by the present invention is: a paddle-free circulating mixing device for liquid materials, including a tank body and a circulating pump for providing power, a feed port and a cover for opening and closing the feed port are provided on the top of the tank body, the feed port can be used as a sampling port, a discharge pipe is provided at the bottom of the tank body, and a discharge valve is provided on the discharge pipe; a first circulation pipe is provided at the upper part of the tank body, one end of the first circulation pipe is connected to the circulation pump, and the other end is connected to the upper part of the tank body through a circulating water inlet pipe; a second circulation pipe is provided at the lower part of the tank body, one end of the second circulation pipe is connected to the circulation pump, and the other end is connected to the lower part of the tank body through a circulating water outlet pipe, and the circulating pump can reciprocally draw liquid from the lower part of the tank body to the upper part of the tank body.

[0008] Furthermore, the circulating water inlet pipe is arranged along the tangential direction of the tank body.

[0009] Furthermore, there are three circulating water inlet pipes, which are equidistantly connected to the outer wall of the tank body, and are all arranged along the tangent direction of the tank body.

[0010] Furthermore, a first control valve is provided on the first circulation pipe.

[0011] Furthermore, the circulating water outlet pipe is arranged along the tangential direction of the tank body.

[0012] Furthermore, there are three circulating water outlet pipes, which are equidistantly connected to the outer wall of the tank body, and are all arranged along the tangent direction of the tank body.

[0013] Furthermore, a second control valve is provided on the second circulation pipe.

[0014] Furthermore, the inner wall of the tank body is provided with an anti-corrosion coating.

[0015] Furthermore, the first circulation pipe, the circulation water inlet pipe, the second circulation pipe and the circulation water outlet pipe are made of stainless steel.

[0016] Furthermore, the circulation pump is an anti-corrosion mortar pump.

[0017] The beneficial effects of the present invention are: 1. The paddleless circulating mixing device of the present invention completely eliminates the stirring paddle, thereby avoiding the technical problem of corrosion of the stirring paddle and making the sampling process safer and more reliable; in addition, it also reduces the noise problem and resonance risk caused by the use of a reduction motor.

[0018] 2. The circulating water inlet pipe of the present invention can cause the liquid entering the tank to form a large vortex. The vortex has a large intensity, which can accelerate the mixing between the liquids, shorten the mixing time, and improve the mixing efficiency.

[0019] 3. The present invention sets the circulating water outlet pipe at the lower part of the tank body and arranges it along the tangential direction of the tank body. When the circulating water outlet pipe extracts the liquid in the tank body, it will generate a large suction force. The suction force will enhance the rotation of the water flow, so that the liquid continues to flow in the same direction along the vortex generated in the tank body, thereby enhancing the intensity of the vortex, accelerating the mixing between the liquids, shortening the mixing time, and improving the mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the present invention.

[0021] Figure 2 yes Figure 1 Top view of .

[0022] The following are marked in the figure: 1. Tank body; 101. Feed port; 102. Lid; 103. Discharge pipe; 104. Discharge valve; 2. Circulation pump; 3. First circulation pipe; 301. First control valve; 4. Circulating water inlet pipe; 5. Second circulation pipe; 501. Second control valve; 6. Circulating water outlet pipe. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] The following is combined with Figures 1-2 The present invention is further described.

[0026] Example 1 In view of the technical problems existing in the background technology, the present invention provides a paddle-free circulating mixing device for liquid materials.

[0027] In the specific technical solution, refer to Figure 1 and Figure 2 The paddleless circulating mixing device includes a tank body 1 and a circulating pump 2 for providing power. The top of the tank body 1 is provided with a feed port 101 and a cover 102 for opening and closing the feed port 101. The feed port 101 can be used as a sampling port. The bottom of the tank body 1 is provided with a discharge pipe 103, and the discharge pipe 103 is provided with a discharge valve 104. The upper part of the tank body 1 is provided with a first circulation pipe 3, one end of the first circulation pipe 3 is connected to the circulation pump 2, and the other end is connected to the upper part of the tank body 1 through a circulation water inlet pipe 4. The lower part of the tank body 1 is provided with a second circulation pipe 5, one end of the second circulation pipe 5 is connected to the circulation pump 2, and the other end is connected to the lower part of the tank body 1 through a circulation water outlet pipe 6. The circulation pump 2 can reciprocally pump liquid from the lower part of the tank body 1 to the upper part of the tank body 1. A first control valve 301 is provided on the first circulation pipe 3, and a second control valve 501 is provided on the second circulation pipe 5.

[0028] Working principle: open the lid 102, add the different liquids to be mixed into the reactor through the feed port 101, close the lid 102 after the liquid is added, start the circulation pump 2, and the circulation pump 2 extracts the liquid from the lower part of the tank body 1 through the circulation outlet pipe 6 and the second circulation pipe 5, and then leads the extracted liquid from the upper part of the tank body 1 to the upper part of the tank body 1 through the first circulation pipe 3 and the circulation inlet pipe 4; the remaining liquid in the tank body forms a vortex after being extracted by the circulation pump, and the extracted liquid is mixed evenly with the liquid forming the vortex in the tank body after falling, and the cycle is repeated.

[0029] Sampling is required to check whether the mixing is uniform. The sampling step is to open the lid 102 and insert the sampling tube into the tank body 1 to absorb the liquid. When sampling in a traditional reactor with a stirring paddle, there is a risk that the sampling tube will be crushed by the stirring paddle. However, by eliminating the stirring paddle in the present application, such risk is eliminated, making the sampling process safer and more reliable.

[0030] From the above structure and working principle, it can be seen that compared with the reactor in the prior art, the paddleless circulating mixing device of the present invention completely eliminates the stirring paddle, thereby avoiding the technical problem of corrosion of the stirring paddle and making the sampling process safer and more reliable; in addition, it also reduces the noise problem and resonance risk caused by the use of a reduction motor.

[0031] To enhance corrosion resistance, this embodiment also includes an anti-corrosion coating on the inner wall of the tank body 1. The coating can be made of PTFE. The first circulation pipe 3, the circulating water inlet pipe 4, the second circulation pipe 5, and the circulating water outlet pipe 6 are made of stainless steel or CPVC. The circulating pump 2 is an anti-corrosion mortar pump.

[0032] Example 2 In order to further increase the eddy current intensity, shorten the mixing time, and improve the mixing efficiency, based on the first embodiment, this embodiment further makes the following improvements: Reference Figure 1 and Figure 2 In this embodiment, three circulating water inlet pipes 4 are provided, and the three circulating water inlet pipes 4 are arranged along the tangential direction of the tank body 1 , and the three circulating water inlet pipes 4 are equidistantly connected to the outer wall of the tank body 1 .

[0033] Working principle: As the number of circulating water inlet pipes 4 increases, the flow rate of the liquid is increased, and the circulating water inlet pipes 4 are equidistantly connected to the outer wall of the tank body 1, so that the liquid flow in each direction remains consistent and reaches a balance; in addition, the three circulating water inlet pipes 4 are arranged along the tangential direction of the tank body 1, which makes the liquid entering the tank body 1 flow toward the inner wall of the tank body. The three circulating water inlet pipes 4 impact the inner wall of the tank body 1 in the same direction, which will form a large vortex in the tank body 1. The vortex has a large intensity, which can accelerate the mixing between the liquids, shorten the mixing time, and improve the mixing efficiency.

[0034] From the above structure and working principle, it can be seen that the circulating water inlet pipe of the present invention can cause the liquid entering the tank to form a large vortex. The vortex has a large intensity, which can accelerate the mixing between the liquids, shorten the mixing time, and improve the mixing efficiency.

[0035] Example 3 An analysis of the bladeless liquid mixing reactor system in the background technology (publication number CN217221474U) shows that the circulating water outlet is set at the bottom of the reactor body, which makes the liquid at the bottom of the reactor body flow downward, so the vortex at the bottom of the reactor body will be weakened, resulting in low mixing efficiency.

[0036] Therefore, in order to further increase the eddy current intensity, shorten the mixing time, and improve the mixing efficiency, based on the second embodiment, this embodiment further makes the following improvements: Reference Figure 1 and Figure 2 In this embodiment, three circulating water outlet pipes 6 are provided, and the three circulating water outlet pipes 6 are equidistantly connected to the outer wall of the tank body 1 , and the three circulating water outlet pipes 5 are arranged along the tangential direction of the tank body 1 .

[0037] Working principle: As the number of circulating water outlet pipes 6 increases, the flow rate of the liquid is increased, and the circulating water outlet pipes 6 are equidistantly connected to the outer wall of the tank body 1, so that the liquid flow in each direction remains consistent and reaches a balance; in addition, the three circulating water outlet pipes 6 are arranged along the tangential direction of the tank body 1, which makes the liquid in the tank body 1 flow into the circulating water outlet pipes 6 toward the inner wall of the tank body 1. The three circulating water outlet pipes 6 draw the liquid in the direction of the inner wall of the tank body 1 in the same direction, which will form a large vortex in the tank body 1. The vortex has a large intensity, which can accelerate the mixing between the liquids, shorten the mixing time, and improve the mixing efficiency.

[0038] From the above structure and working principle, it can be seen that compared with the existing technology, the present invention sets the circulating water outlet pipe at the lower part of the tank body and arranges it along the tangential direction of the tank body. When the circulating water outlet pipe extracts the liquid in the tank body, it will generate a large suction force. The suction force will enhance the rotation of the water flow, so that the liquid continues to flow in the same direction along the vortex generated by Example 2, thereby enhancing the intensity of the vortex, accelerating the mixing between the liquids, shortening the mixing time, and improving the mixing efficiency.

[0039] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A paddleless circulating mixing device for liquid materials, characterized in that: The invention comprises a tank body (1) and a circulation pump (2) for providing power. The top of the tank body (1) is provided with a feed port (101) and a cover (102) for opening and closing the feed port (101). The feed port (101) can be used as a sampling port. The bottom of the tank body (1) is provided with a discharge pipe (103). The discharge pipe (103) is provided with a discharge valve (104). The upper part of the tank body (1) is provided with a first circulation pipe (3). One end of the first circulation pipe (3) is connected to the circulation pump (2), and the other end is connected to the upper part of the tank body (1) through a circulation water inlet pipe (4). The lower part of the tank body (1) is provided with a second circulation pipe (5). One end of the second circulation pipe (5) is connected to the circulation pump (2), and the other end is connected to the lower part of the tank body (1) through a circulation water outlet pipe (6). The circulation pump (2) can reciprocate to extract liquid from the lower part of the tank body (1) to the upper part of the tank body (1).

2. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: The circulating water inlet pipe (4) is arranged along the tangential direction of the tank body (1).

3. The paddle-free circulating mixing device for liquid materials according to claim 2, characterized in that: There are three circulating water inlet pipes (4), which are equidistantly connected to the outer wall of the tank body (1). The three circulating water inlet pipes (4) are all arranged along the tangent direction of the tank body (1).

4. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: A first control valve (301) is provided on the first circulation pipe (3).

5. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: The circulating water outlet pipe (6) is arranged along the tangential direction of the tank body (1).

6. The paddle-free circulating mixing device for liquid materials according to claim 5, characterized in that: There are three circulating water outlet pipes (6), which are equidistantly connected to the outer wall of the tank body (1), and the three circulating water outlet pipes (5) are all arranged along the tangent direction of the tank body (1).

7. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: A second control valve (501) is provided on the second circulation pipe (5).

8. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: The inner wall of the tank body (1) is provided with an anti-corrosion coating.

9. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: The first circulation pipe (3), the circulation water inlet pipe (4), the second circulation pipe (5) and the circulation water outlet pipe (6) are made of stainless steel.

10. The paddle-free circulating mixing device for liquid materials according to claim 1, characterized in that: The circulation pump (2) is an anti-corrosion mortar pump.

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