Anti-floating collision type viscous material eddy current convection pulping machine and use method thereof

Abstract

The present invention discloses an anti-floating and collision-type eddy current convection pulping machine for viscous materials, comprising a shell with an open top, and left and right semicircular parts are provided on the left and right sides of the shell; two sets of circulation mechanisms are symmetrically provided in the shell; the left and right semicircular parts are collectively referred to as semicircular parts, and each semicircular part is connected downwardly to a frustum-shaped base; the liquid inlet direction of the two sets of circulation mechanisms into the shell is the tangential direction of the semicircular part to form an overall vortex, and the liquid flow directions of the two sets of circulation mechanisms are opposite to each other to form a vortex collision. The present invention pioneered a technical route of performing an overall vortex collision of two slurry flows to stir and mix the viscous slurry by utilizing the shear force generated by the collision inside the slurry, so that the diameter of the stirring blade can be reduced by more than multiple times, so that the force area of ​​the stirring blade is greatly reduced, the force arm of the stirring blade root is greatly shortened, and the torque borne by the stirring blade root is also greatly reduced, thereby solving the problem caused by excessive buoyancy in the previous stirring blade operation.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a stirring pulping machine. Background Art

[0002] In the construction field, mixers are almost indispensable. Traditional mixers have a simple structure. Most of them use a stirring rod in a mixing barrel to mix water and ash evenly to make slurry.

[0003] The stirring principle of the mixer is to transmit mechanical energy to the liquid material through the rotation of the agitator, causing forced convection of the liquid.

[0004] There are two types of forced convection, namely bulk convection and eddy convection.

[0005] The agitator transfers kinetic energy to the surrounding liquid, generating a high-speed flow. This flow, in turn, propels the surrounding liquid, gradually causing the entire liquid in the container to flow. This large-scale circulation is called "macroflow," and the resulting container-wide diffusion mixing is called bulk convection-diffusion.

[0006] When a high-speed liquid flow generated by an agitator passes through a stationary or slower-moving liquid, the fluid at the interface between the high-speed and low-speed fluids is subjected to intense shear, generating numerous eddies. These eddies rapidly diffuse outward, entraining more liquid into the macroscopic flow while also creating rapid and turbulent convection of the material within a localized area. This eddy convection is called eddy flow, and the resulting localized convection-diffusion mixing is called eddy diffusion.

[0007] The direct shearing action of the agitator blades on the fluid will of course also cause strong vortex flow.

[0008] Convective diffusion and eddy diffusion can be considered as "convective mixing".

[0009] The density and viscosity of high-viscosity materials are very high, and the main convection diffusion and eddy diffusion are greatly restricted. The stirring efficiency and stirring effect of traditional mixers used to stir high-viscosity materials need to be improved.

[0010] Highly viscous materials rely primarily on shear for mixing. Shear breaks the mixed materials into increasingly thin layers, reducing the size of the area occupied by one component. For example, the mixing process of two viscous materials begins with a small number of discrete components randomly distributed throughout the mixture. The shear generated by the movement of the boundary surfaces stretches these discrete components, transforming the system into a layered structure with alternating light and dark colors. If the applied shear is sufficiently strong, the thickness of each pair of thin layers can become indistinguishable to the naked eye, resulting in the appearance of a single uniform color.

[0011] The closer the distance between the inner surface of the mixing vessel and the mixing blades, the greater the shear force on the liquid between them. Therefore, in existing mixers for high-viscosity materials, the mixing blades are close to the inner diameter of the mixing vessel (the ratio approaches 1:1). Although this generates a large shear force on the fluid at the inner surface of the mixing vessel, which helps to enhance the mixing effect of high-viscosity materials, it has the following disadvantages:

[0012] The diameter of the mixing blade is large (close to the inner diameter of the mixing vessel), and the mixing vessel is usually a top-in, bottom-out structure. As the mixing blade rotates, the upward force from the material acting on it is applied over a large area. This large upward force causes the mixing blade to float. If the connection between the mixing blade and the mixing shaft does not allow the mixing blade to float, the upward force may cause the mixing blade to deform or even be damaged. Summary of the Invention

[0013] The purpose of the present invention is to provide an anti-floating collision type eddy current convection pulping machine for viscous materials, which no longer relies on the shear force between the viscous slurry and the wall of the stirring container, but relies on the shear force formed by the collision between the viscous slurries to stir the viscous materials, thereby greatly shortening the diameter of the stirring blades, shortening the length of the torque arm, and reducing the buoyancy and the torque generated on the root of the stirring blades.

[0014] To achieve the above-mentioned object, the present invention provides an anti-floating, collision-type viscous material eddy current convection pulping machine, comprising a housing with an open top, a left semicircular portion provided on the left side of the housing, and a right semicircular portion provided on the right side of the housing, wherein the radii of the left and right semicircular portions are the same and the distance between the centers of the two circles is the diameter of the two circles;

[0015] Two sets of circulation mechanisms are symmetrically arranged in the left and right semicircular parts of the shell; the circulation mechanisms are used to generate slurry circulation and stir the slurry;

[0016] The left semicircular part and the right semicircular part are collectively referred to as semicircular parts, and each semicircular part is connected downwardly to a frustum-shaped base that is larger at the top and smaller at the bottom;

[0017] The liquid inlet directions of the two circulation mechanisms into the shell are both in the tangential directions of the semicircular part, thereby forming an overall vortex, and the liquid flow directions of the two circulation mechanisms are opposite to each other, thereby forming a vortex collision.

[0018] Each circulation mechanism includes an upper circulation pipe, a stirring shaft, stirring blades and a lower circulation pipe;

[0019] The direction pointing to the center of the shell is inward, and the opposite direction is outward. The upper circulation pipe is connected to the outer side of the top of the semicircular part of the shell along the tangential direction. The upper circulation pipe is connected to the pulping valve.

[0020] The lower circulation pipe is connected to the inlet of the external slurry pump, the outlet of the external slurry pump is connected to a slurry discharge valve, the slurry discharge valve is connected to a slurry discharge pipe, the slurry discharge valve is a two-position three-way valve and is connected to the upper circulation pipe, the outlet of the external slurry pump is selectively connected to the upper circulation pipe or the slurry discharge pipe through the slurry discharge valve, and the slurry discharge pipe is used to connect to an external slurry storage container or slurry use site;

[0021] The diameter of the stirring blade is less than half of the diameter of the semicircular portion;

[0022] The upper and lower ends of the stirring shaft are connected to the housing through bearings or mounting sleeves. The top end of the stirring shaft extends out of the housing and is installed with a driven wheel. The outside of the housing is fixedly connected to a motor. A driving wheel is installed on the output shaft of the motor. The driving wheel and the driven wheel are both pulleys or sprockets. The driving wheel and the driven wheel are connected by a transmission belt or a transmission chain.

[0023] The stirring blade is installed on the stirring shaft. The bottom end of the frustum-shaped base is downwardly connected to provide a liquid outlet cavity, and the liquid outlet cavity is connected to the lower circulation pipe.

[0024] The stirring shaft is mounted on the stirring shaft by the following structure:

[0025] The lower part of the stirring shaft is thick at the top and thin at the bottom to form a step, and a blade sleeve is installed on the step. The stirring blade is fixedly installed on the blade sleeve and is installed on the stirring shaft through the blade sleeve. During operation, the blade sleeve presses the step upward under the buoyancy of the stirring blade.

[0026] The present invention also discloses a method for using the above-mentioned counter-collision type viscous material eddy current convection pulping machine, which is carried out according to the following steps:

[0027] The first step is a connection step, which is to connect the slurry discharge valve to the slurry discharge pipe, the upper circulation pipe and the outlet of the external slurry pump, and connect the slurry discharge pipe to the external slurry storage container or the slurry use site;

[0028] The second step is to add the material; add the viscous slurry to be stirred into the shell through the top opening of the shell;

[0029] The third step is a continuous stirring step; the slurry making valve is opened, the slurry discharge valve is selected to connect the outlet of the slurry pump and the upper circulation pipe, the motors of the two circulation mechanisms are turned on, and the external slurry pump is turned on; the high-pressure slurry generated by the slurry pump flows through the upper circulation pipes of the two circulation mechanisms into the left and right semicircular parts of the shell 1, and forms two overall vortexes under the constraints of the left and right semicircular parts of the shell. The two overall vortexes are in opposite directions and collide with each other at the center of the shell. The shear force formed by the docking causes the viscous discrete materials to be stretched and thinned, so that the viscous slurry is stirred evenly;

[0030] The stirring blades further stir the viscous slurry during rotation. Under the combined action of the inlet pressure and the stirring blades, the viscous slurry flows downward into the liquid outlet cavity, and finally flows back to the inlet of the external slurry pump through the lower circulation pipe, forming a complete slurry circulation.

[0031] The fourth step is to discharge the slurry; after the viscous slurry is stirred and mixed evenly, the slurry discharge valve is connected to the outlet of the slurry pump and the slurry discharge pipe, and the slurry is discharged to an external slurry storage container or slurry use site through the slurry discharge pipe;

[0032] The fifth step is the closing step;

[0033] After the slurry is discharged, the slurry pump, motor and slurry valve are turned off to end the slurrying.

[0034] The present invention has the following advantages:

[0035] The present invention uses a semicircular portion to guide the high-pressure inlet liquid in the tangential direction, thereby forming an overall vortex; the left and right overall vortices meet in the middle of the shell and collide with each other. Since the relative speed of the collision is twice the flow speed of the slurry, the shear force generated by the collision is greatly improved compared with the past (the relative speed between the slurry flow and the inner wall of the shell is the flow speed of the slurry). Moreover, it is not a speed difference formed by the counter-rotating impellers (the interlayer spacing of the counter-rotating impellers is very close. If the interlayer spacing is far, the shear force can be ignored. If the interlayer spacing is close, there will inevitably be a partial offset of the power of the slurry. The slurry collides before it is fully accelerated. The turbulence at the collision is close to the power source, and the turbulence hinders the flow of the slurry under the drive of the impeller). The collision intensity is higher, the amount of slurry participating in the collision is larger (basically all the slurry participates in the collision), the collision center is located at the midpoint of the line connecting the centers of the two semicircular parts, which is also the center of the shell, far away from the liquid inlet position, the impact of the collision on the liquid inlet flow rate is smaller, and the shear force generated by the collision is more effective. The large shear force generated at the collision point of the viscous slurry causes the viscous discrete materials to be stretched and thinned, so that the viscous slurry is stirred evenly.

[0036] The present invention pioneered a technical route of using two slurry flows to collide with each other as a whole to stir and mix the viscous slurry by utilizing the shear force generated inside the slurry by the collision, so that the diameter of the stirring blade can be reduced by more than multiple times (without having to consider that the shear force between the slurry and the shell wall is too low), so that the force area of ​​the stirring blade is greatly reduced, the force arm of the stirring blade root is greatly shortened, and the torque borne by the stirring blade root is also greatly reduced, thereby solving the problem caused by excessive buoyancy of the stirring blade during operation in the past.

[0037] The two sets of circulation mechanisms have a simple structure. The slurry enters from the left and right outer sides of the top semicircular part of the shell to form two relatively rotating high-speed vortexes on the left and right. The two high-speed vortexes collide at high speed in the middle of the shell, and the collision speed is twice the slurry speed. In the prior art, the shear force is generated by the relative speed between the slurry and the inner wall of the shell. Specifically, the flow speed of the slurry directly attached to the inner wall of the shell is close to zero, so the previous relative speed is close to 1 times the slurry speed. The present invention increases the slurry speed difference that forms the shear force at a multiple rate, greatly increases the shear force on the slurry, and thus improves the stirring efficiency and stirring effect.

[0038] The step limits the vertical position of the blade sleeve and the mixing blade. Since the reduction in diameter reduces the buoyancy and buoyancy torque of the mixing blade, the limiting effect of the step will not damage the mixing blade. There is no need to replace the mixing blade frequently, nor is there any need to use materials with stronger mechanical properties to make the mixing blade. Instead, ordinary blades can be used directly.

[0039] The design goal of the present invention is to solve the problem of strong buoyancy of the stirring blade.

[0040] The design idea of ​​the present invention is to reduce the problem caused by the buoyancy of the stirring blades through the following technical measures:

[0041] 1. Set the stirring shaft as a stepped shaft, and set the shaft sleeve connected to the stirring blade at the step where the thickness is thick at the top and thin at the bottom of the stirring shaft, so as to limit the floating of the blade sleeve through the step.

[0042] Even if someone thought of doing this, it would not solve the following problems:

[0043] In this way, the buoyancy force on the stirring blade during rotation will generate a strong torque at the stirring blade, especially at the root position where the stirring blade is connected to the blade sleeve, making the stirring blade structure easily damaged during long-term operation.

[0044] 2. To address the issue of strong torque being applied to the root of the mixing blade where it connects to the blade sleeve during operation, the present invention shortens the diameter of the mixing blade to between one-third and one-half the inner diameter of the mixing vessel (inclusive). This reduced diameter significantly reduces the area of ​​buoyancy exerted on the mixing blade, and significantly reduces the length of the lever arm. This significantly reduces the torque applied to the root of the mixing blade where it connects to the blade sleeve during operation, thereby lowering the strength requirements for the mixing blade and ensuring that the mixing blade is not damaged by buoyancy during long-term operation.

[0045] Even if someone thought of doing this, it would not solve the following problems:

[0046] When the diameter of the mixing blade is shortened, the distance between the mixing blade and the inner wall of the mixing vessel is too large, and the technical principle of enhancing the mixing effect by "the closer the distance between the inner surface of the mixing vessel and the mixing blade, the greater the shear force on the liquid between them" cannot be utilized. This technical principle is commonly used in existing mixers for high-viscosity materials.

[0047] Of course, in reality, the flow velocity of the slurry directly attached to the inner wall of the shell is close to zero (but definitely not zero). The above-mentioned "shear force on the liquid" refers to the shear force between the slurry with a very low velocity affected by the inner wall of the shell and the slurry with a very high velocity affected by the stirring blades.

[0048] 3. To address the problem that it is difficult to form effective shear force between the viscous fluid and the wall of the mixing container after the diameter of the mixing blade is shortened, the present invention designs two sets of slurry feeding, stirring and discharging mechanisms. Through high-speed collision of the slurry at two points, shear force is generated at the collision point. Moreover, since ① both parties of the collision are viscous fluids to be evenly stirred and ② the relative speed is twice as high as before (if the flow rate of the slurry is X meters / second, then its relative speed relative to the wall of the mixing container is X meters / second; the relative speed at the collision point of the two viscous fluids is 2X meters / second), the shear force generated at the collision point of the two viscous fluids is also doubled compared with the past. The larger shear force generated at the collision point of the viscous slurry causes the viscous discrete materials to be pulled longer and thinner, and the mixing efficiency and effect are greatly improved.

[0049] When the present invention is used to stir non-viscous materials, the eddy current phenomenon at the collision point can of course also be used to improve the stirring efficiency and stirring effect.

[0050] It should be noted that ① the existing two fluids collide in a stirring container to promote uniform stirring, which is not aimed at viscous slurry (metal cannot negate iron), and is not for utilizing the larger shear force generated at the collision of viscous slurry to stretch and thin the viscous discrete materials, but for the vortex generated at the collision of ordinary slurry to improve the stirring efficiency and stirring effect. ② The existing technology for the collision of two fluids in a stirring container is a set of stirring shafts and a set of liquid inlet mechanisms and a set of liquid outlet mechanisms, which is a small-scale collision. The present invention is two sets of stirring shafts and two sets of liquid inlet mechanisms and two sets of liquid outlet mechanisms, which are two sets of integrated collisions of liquid inlets. Under one set of liquid inlet mechanisms, an overall collision cannot be generated, and the intensity of the collision and the amount of slurry involved in the collision are both smaller than the integrated collision of two sets of liquid inlets. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the cross-sectional structure of an anti-floating collision type eddy current convection pulping machine for viscous materials.

[0052] Figure 2 yes Figure 1 Left view of .

[0053] Figure 3 yes Figure 1 AA view, Figure 3 The viewing direction is upward.

[0054] Figure 4 yes Figure 1 BB cross-section diagram.

[0055] Figure 5 yes Figure 1 Enlarged view of point A in the middle.

[0056] Figure 6 It is a schematic diagram of the piping structure connecting the external slurry pump and the slurry discharge valve. DETAILED DESCRIPTION

[0057] like Figures 1 to 6 As shown, the anti-floating collision type viscous material eddy current convection pulping machine of the present invention includes a housing 1 with an open top, a left semicircular portion 2 is provided on the left side of the housing 1, and a right semicircular portion 3 is provided on the right side of the housing 1. The radii of the left semicircular portion 2 and the right semicircular portion 3 are the same, and the distance between the centers of the two circles is the diameter of the two circles;

[0058] Two sets of circulation mechanisms are symmetrically arranged in the left semicircular part 2 and the right semicircular part 3 of the shell 1; the circulation mechanisms are used to generate slurry circulation and stir the slurry;

[0059] The left semicircular portion 2 and the right semicircular portion 3 are collectively referred to as semicircular portions, and each semicircular portion is downwardly connected to a frustum-shaped base 4 that is larger at the top and smaller at the bottom;

[0060] The liquid inlet directions of the two circulation mechanisms into the shell are both in the tangential directions of the semicircular part, thereby forming an overall vortex, and the liquid flow directions of the two circulation mechanisms are opposite to each other, thereby forming a vortex collision. Figure 3 The direction indicated by the large curved arrow is the direction of liquid flow in the two sets of circulation mechanisms.

[0061] The present invention uses a semicircular portion to guide the high-pressure inlet liquid in the tangential direction, thereby forming an overall vortex; the left and right overall vortices meet in the middle of the shell 1 and collide with each other. Since the relative speed of the collision is twice the flow speed of the slurry, the shear force generated by the collision is greatly increased compared with the past (the relative speed between the slurry flow and the inner wall of the shell 1 is the flow speed of the slurry). Moreover, it is not a speed difference formed by the counter-rotating impellers (the interlayer spacing of the counter-rotating impellers is very close. If the interlayer spacing is far, the shear force can be ignored. If the interlayer spacing is close, there will inevitably be a partial offset of the power of the slurry. The slurry collides before it is fully accelerated. The turbulence at the collision is close to the power source, and the turbulence hinders the flow of the slurry under the drive of the impeller). The collision intensity is higher, the amount of slurry participating in the collision is larger (almost all the slurry participates in the collision), and the center of the collision is located at the midpoint of the line connecting the centers of the two semicircular portions, which is also the center of the shell 1 and is far away from the liquid inlet position. Therefore, the impact of the collision on the liquid inlet flow rate is smaller, and the shear force generated by the collision is more effective. The large shear force generated at the collision point of the viscous slurry causes the viscous discrete materials to be stretched and thinned, so that the viscous slurry is stirred evenly.

[0062] The present invention pioneered a technical route of performing an overall swirling collision between two slurry flows to stir and mix the viscous slurry by utilizing the shear force generated inside the slurry by the collision, thereby reducing the diameter of the stirring blade by more than several times (without having to consider that the shear force between the slurry and the wall of the shell 1 is too low), greatly reducing the force area of ​​the stirring blade, greatly shortening the force arm of the stirring blade root, and greatly reducing the torque borne by the stirring blade root, thereby solving the problem caused by excessive buoyancy of the stirring blade during operation in the past.

[0063] Each circulation mechanism includes an upper circulation pipe 5, a stirring shaft 7, a stirring blade 8 and a lower circulation pipe 6;

[0064] With the direction pointing to the center of the shell 1 as the inward direction and the opposite direction as the outward direction, the upper circulation pipe 5 is connected to the outer side of the top of the semicircular part of the shell 1 along the tangential direction, and the upper circulation pipe 5 is connected to the pulping valve 9;

[0065] The lower circulation pipe 6 is connected to the inlet of the external slurry pump 18, and the outlet of the external slurry pump 18 is connected to the slurry discharge valve 10, and the slurry discharge valve 10 is connected to the slurry discharge pipe 11. The slurry discharge valve 10 is a two-position three-way valve and is connected to the upper circulation pipe 5. The outlet of the external slurry pump 18 is selectively connected to the upper circulation pipe or the slurry discharge pipe 11 through the slurry discharge valve 10. The slurry discharge pipe 11 is used to connect to an external slurry storage container or slurry use site.

[0066] The slurry pump 18 is a conventional technology and is not shown in the figure. The attached figure is a structural diagram, and the connection relationship of the slurry pump 18 is described in this paragraph and Figure 6 shall prevail.

[0067] The diameter of the stirring blade 8 is less than half of the diameter of the semicircular portion; the stirring shaft 7 passes through the center of the semicircular portion of the shell where it is located.

[0068] The upper and lower ends of the stirring shaft 7 are connected to the housing 1 through bearings or mounting sleeves. The top end of the stirring shaft 7 extends out of the housing 1 and is installed with a driven wheel 12. The outside of the housing 1 is fixedly connected to a motor 13. A driving wheel 14 is installed on the output shaft of the motor 13. The driving wheel 14 and the driven wheel 12 are both pulleys or sprockets. The driving wheel 14 and the driven wheel 12 are connected by a transmission belt or a transmission chain.

[0069] The stirring blade 8 is installed on the stirring shaft 7 , and the bottom end of the frustum-shaped base 4 is downwardly connected to provide a liquid outlet cavity 15 , which is connected to the lower circulation pipe 6 .

[0070] The two sets of circulation mechanisms have a simple structure. The slurry enters from the left and right outer sides of the top of the semicircular part of the shell 1 to form two relatively rotating high-speed vortices on the left and right. The two high-speed vortices collide at high speed in the middle of the shell 1, and the collision speed is twice the slurry speed. In the prior art, the shear force is formed by the relative speed between the slurry and the inner wall of the shell 1. Specifically, the flow speed of the slurry directly attached to the inner wall of the shell 1 is close to zero, so the previous relative speed is close to 1 times the slurry speed. The present invention increases the slurry speed difference that forms the shear force at a multiple rate, greatly increases the shear force on the slurry, and thus improves the stirring efficiency and stirring effect.

[0071] The stirring shaft 7 is mounted on the stirring shaft 7 by the following structure:

[0072] The lower part of the stirring shaft 7 is thicker at the top and thinner at the bottom to form a step 16, and a blade sleeve 17 is installed on the step 16. The stirring blade 8 is fixedly installed on the blade sleeve 17 and is installed on the stirring shaft 7 through the blade sleeve 17. During operation, the blade sleeve 17 presses the step 16 upward under the action of the upward buoyancy of the stirring blade 8.

[0073] The step 16 limits the vertical position of the blade sleeve 17 and the mixing blade 8. Since the diameter is reduced, the buoyancy and buoyancy torque of the mixing blade 8 are reduced. Therefore, the limiting effect of the step 16 will not damage the mixing blade 8. There is no need to replace the mixing blade 8 frequently, nor is there any need to use materials with stronger mechanical properties to make the mixing blade 8. Instead, ordinary blades can be used directly.

[0074] The present invention also discloses a method for using the above-mentioned counter-collision type viscous material eddy current convection pulping machine, which is carried out according to the following steps:

[0075] The first step is the connection step, connecting the slurry discharge valve 10 to the slurry discharge pipe 11, the upper circulation pipe 5 and the outlet of the external slurry pump 18, and connecting the slurry discharge pipe 11 to the external slurry storage container or slurry use site;

[0076] The second step is to add the material; add the viscous slurry to be stirred (or the viscous material plus slurry) into the shell 1 through the top opening of the shell 1;

[0077] The third step is a continuous stirring step; open the slurry making valve 9, make the slurry discharge valve 10 select the outlet of the slurry pump 18 and the upper circulation pipe 5 to be connected, turn on the motors 13 of the two sets of circulation mechanisms, and turn on the external slurry pump 18; the high-pressure slurry generated by the slurry pump 18 flows through the upper circulation pipes 5 of the two sets of circulation mechanisms and enters the left semicircular part 2 and the right semicircular part 3 of the shell 1, and forms two overall swirls under the constraints of the left semicircular part 2 and the right semicircular part 3 of the shell (the stirring blades with different rotation directions in different layers form local swirls), the two overall swirls are opposite in direction and collide with each other at the center of the shell, and the shear force formed by the docking causes the viscous discrete materials to be stretched and thinned, so that the viscous slurry is stirred evenly;

[0078] The stirring blades 8 further stir the viscous slurry during rotation. Under the combined action of the inlet pressure and the stirring blades 8, the viscous slurry flows downward into the liquid outlet chamber 15 and finally flows back to the inlet of the external slurry pump 18 through the lower circulation pipe 6, forming a complete slurry circulation. During the slurry circulation, shearing action is continuously generated between fluids of different speeds through the overall vortex collision, so that the viscous slurry is evenly mixed.

[0079] The fourth step is to discharge the slurry; after the viscous slurry is stirred and mixed evenly, the slurry discharge valve 10 is selected to connect the outlet of the slurry pump 18 and the slurry discharge pipe 11, and the slurry is discharged to an external slurry storage container or slurry use site through the slurry discharge pipe 11;

[0080] The fifth step is the closing step;

[0081] After the slurry is discharged, the slurry pump 18, the motor 13 and the slurry valve 9 are turned off to end the slurrying.

[0082] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An anti-floating, collision-type eddy current convection pulping machine for viscous materials, comprising a housing with an open top, a left semicircular portion provided on the left side of the housing, and a right semicircular portion provided on the right side of the housing, characterized in that: The radius of the left semicircle part and the right semicircle part is the same and the distance between the centers of the two circles is the diameter of the two circles; Two sets of circulation mechanisms are symmetrically arranged in the left and right semicircular parts of the shell; the circulation mechanisms are used to generate slurry circulation and stir the slurry; The left semicircular part and the right semicircular part are collectively referred to as semicircular parts, and each semicircular part is connected downwardly to a frustum-shaped base that is larger at the top and smaller at the bottom; The liquid inlet directions of the two circulation mechanisms into the shell are both in the tangential direction of the semicircular part, thus forming an overall vortex, and the liquid flow directions of the two circulation mechanisms are opposite to each other, thus forming a vortex collision; Each circulation mechanism includes an upper circulation pipe, a stirring shaft, stirring blades and a lower circulation pipe; The direction pointing to the center of the shell is inward, and the opposite direction is outward. The upper circulation pipe is connected to the outer side of the top of the semicircular part of the shell along the tangential direction. The upper circulation pipe is connected to the pulping valve. The diameter of the stirring blade is less than half of the diameter of the semicircular portion; The stirring shaft passes through the center of the semicircular portion of the shell in which it is located.

2. The anti-floating, collision-type eddy current convection pulping machine for viscous materials according to claim 1, characterized in that: The lower circulation pipe is connected to the inlet of the external slurry pump, the outlet of the external slurry pump is connected to a slurry discharge valve, the slurry discharge valve is connected to a slurry discharge pipe, the slurry discharge valve is a two-position three-way valve and is connected to the upper circulation pipe, the outlet of the external slurry pump is selectively connected to the upper circulation pipe or the slurry discharge pipe through the slurry discharge valve, and the slurry discharge pipe is used to connect to an external slurry storage container or slurry use site; The upper and lower ends of the stirring shaft are connected to the housing through bearings or mounting sleeves. The top end of the stirring shaft extends out of the housing and is installed with a driven wheel. The outside of the housing is fixedly connected to a motor. A driving wheel is installed on the output shaft of the motor. The driving wheel and the driven wheel are both pulleys or sprockets. The driving wheel and the driven wheel are connected by a transmission belt or a transmission chain. The stirring blade is installed on the stirring shaft. The bottom end of the frustum-shaped base is downwardly connected to provide a liquid outlet cavity, and the liquid outlet cavity is connected to the lower circulation pipe.

3. The anti-floating, collision-type eddy current convection pulping machine for viscous materials according to claim 2, characterized in that: The stirring shaft is mounted on the stirring shaft by the following structure: The lower part of the stirring shaft is thick at the top and thin at the bottom to form a step, and a blade sleeve is installed on the step. The stirring blade is fixedly installed on the blade sleeve and is installed on the stirring shaft through the blade sleeve. During operation, the blade sleeve presses the step upward under the buoyancy of the stirring blade.

4. The method for using the counter-collision type viscous material eddy current convection pulping machine according to claim 3 is characterized in that Follow these steps: The first step is a connection step, which is to connect the slurry discharge valve to the slurry discharge pipe, the upper circulation pipe and the outlet of the external slurry pump, and connect the slurry discharge pipe to the external slurry storage container or the slurry use site; The second step is to add the material; add the viscous slurry to be stirred into the shell through the top opening of the shell; The third step is a continuous stirring step; the slurry making valve is opened, the slurry discharge valve is connected to the outlet of the slurry pump and the upper circulation pipe, the motors of the two circulation mechanisms are turned on, and the external slurry pump is turned on; the high-pressure slurry generated by the slurry pump flows through the upper circulation pipes of the two circulation mechanisms into the left and right semicircular parts of the shell, and forms two overall vortexes under the constraints of the left and right semicircular parts of the shell. The two overall vortexes are in opposite directions and collide with each other at the center of the shell. The shear force generated by the docking causes the viscous discrete materials to be stretched and thinned, so that the viscous slurry is evenly stirred; The stirring blades further stir the viscous slurry during rotation. Under the combined action of the inlet pressure and the stirring blades, the viscous slurry flows downward into the liquid outlet cavity, and finally flows back to the inlet of the external slurry pump through the lower circulation pipe, forming a complete slurry circulation. The fourth step is to discharge the slurry; after the viscous slurry is stirred and mixed evenly, the slurry discharge valve is connected to the outlet of the slurry pump and the slurry discharge pipe, and the slurry is discharged to an external slurry storage container or slurry use site through the slurry discharge pipe; The fifth step is the closing step; After the slurry is discharged, the slurry pump, motor and slurry valve are turned off to end the slurrying.

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