CN213890562U - High-speed stirring barrel with shaft sealing structure - Google Patents

Abstract

The utility model provides a high-speed agitator of band-pass axle seal structure, includes agitator and stirring rake and the seal assembly of mutually supporting, the agitator is seal structure, but the stirring rake is rotatory the installation at a high speed in the agitator, seal assembly is used for the sealed of the axle of agitator. Through designing the agitator for seal structure to with the stirring rake design for high-speed rotatory, the cement granule of high-speed rotatory like this constantly strikes the bucket wall and shears each other under centrifugal acceleration's effect, makes the material fully disturb in the agitator, the misce bene, the dispersion is thorough, has created sufficient condition for cement fully hydrating, thereby makes each item index of the grout slurry body of making all be superior to the grout slurry body that current pulping machine made. The method is suitable for pulping of cement grouting materials.

Description

High-speed stirring barrel with shaft sealing structure

Technical Field

The utility model relates to a cement grout material technical field specifically is a high-speed agitator of tape spool seal structure.

Background

At present, most of the existing cement-based prestressed duct grouting material grouting machines (hereinafter referred to as grouting machines) adopt a vertical stirring structure, and a stirring barrel is generally in an open structure. However, since particles (particulates) in the cement slurry are suspended in the form of flocs in many cases, the larger the concentration is, the stronger the tendency of the flocs to exist, and the more difficult the cement particles are to be dispersed. Therefore, due to structural reasons, the vertical stirring tank can cause the slurry to move in the tank along with the blades to form a regular rotating flow field, and the relative movement around the main shaft is greatly reduced, so that the packet (water-in-water powder) of partial powder in the slurry is not easy to break and disperse, partial cement is difficult to hydrate, and the quality of pulping is seriously influenced. Therefore, the existing mixing drum with an open structure cannot meet the use requirements, and a new mixing drum needs to be developed urgently to solve the problems. Moreover, because the shaft sealing effect of the existing open-type stirring barrel is poor, when the stirring shaft rotates, slurry is attached to the shaft and inevitably rubs the sealing material, particularly, the slurry remained in the gap of the sealing material is solidified into large hard particles and is not easy to be removed, and the sealing can be damaged and leakage can occur after a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-speed agitator of band shaft seal structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high-speed agitator of band-pass axle seal structure, includes agitator and stirring rake and the seal assembly of mutually supporting, the agitator is seal structure, but the stirring rake is rotatory the installation at a high speed in the agitator, seal assembly is used for the sealed of the axle of agitator. Through designing the agitator for seal structure to with the stirring rake design for high-speed rotatory, the cement granule of high-speed rotatory like this constantly strikes the bucket wall and shears each other under centrifugal acceleration's effect, makes the material fully disturb in the agitator, the misce bene, the dispersion is thorough, has created sufficient condition for cement fully hydrating, thereby makes each item index of the grout slurry body of making all be superior to the grout slurry body that current pulping machine made.

Preferably, the stirring barrel is of a horizontal structure, and the rotating speed of the stirring paddle is greater than or equal to 400 rpm. The stirring barrel is designed into a horizontal structure, so that a turbulent flow area is formed on the back surface of a blade of the stirring paddle along with the rotation of the stirring paddle, and slurry can flow irregularly and impact each other in the stirring barrel, so that cement particles are rapidly dispersed, and cement molecules are fully hydrated; the rotating speed of the stirring paddle is designed to be larger than or equal to 400rpm, and the linear speed of the paddle blade of the stirring paddle is larger than or equal to 7m/s, so that cement particles rotating at a high speed continuously impact the wall of the stirring barrel and are sheared mutually under the action of centrifugal acceleration, materials are fully disturbed in the stirring barrel, are uniformly mixed and are thoroughly dispersed, and sufficient conditions are created for full hydration of cement, so that the prepared grouting material slurry has various indexes such as fluidity, bleeding rate and the like which are superior to those of grouting material slurry prepared by the existing grouting machine.

Preferably, the ratio of the blade rotating diameter of the stirring paddle to the inner diameter of the stirring barrel is greater than or equal to 0.7 and less than 1, and the ratio of the blade effective acting width of the stirring paddle 2 to the net length of the stirring barrel is 0.2-0.8. When the ratio of the effective acting width of the paddle of the stirring paddle to the net length of the stirring barrel is lower than 0.2, the disturbance force of the paddle on the slurry is reduced, the axial fluidity of the slurry is poor, and the dispersion of particles is not facilitated; when the ratio of the effective action width of the paddle of the stirring paddle to the net length of the stirring barrel is more than 0.8, the axial flow space of the slurry is reduced, the horizontal exchange position of the slurry is limited, the nonuniformity of the whole slurry is increased, and meanwhile, the shaft power output by the motor is greatly increased along with the increase of the effective action width of the paddle, so that the equipment loses economy; when the ratio of the rotating diameter of the paddle of the stirring paddle to the inner diameter of the stirring barrel is less than 0.85, the disturbance performance of the paddle to the slurry is poor, and particularly in the initial stage of stirring, the stirring water is concentrated at the bottom of the stirring barrel, so that the powder is difficult to disperse, and the rapid pulping is not facilitated.

Preferably, the stirring paddle comprises a stirring shaft, at least one group of blades is arranged on the stirring shaft along the axial direction, each group of blades comprises at least one blade arranged along the circumferential direction of the stirring shaft, and the axial angle alpha of each blade ranges from 15 degrees to 80 degrees. The axial angle alpha of the paddle directly influences the dispersion effect and the output torque of the motor, and when the alpha is larger than 80 degrees, the pressure of the paddle on the slurry is reduced, so that the axial movement of the slurry is not facilitated, and the dispersion effect is influenced; when the alpha is less than 15 degrees, although the pressure of the paddle on the slurry is improved, the disturbance on the slurry is increased, and the dispersion effect of particles is also facilitated, the output torque of the motor is greatly increased, the manufacturing cost is increased, and the economical efficiency and the scientificity of equipment are lost.

Preferably, at least two groups of blades are axially arranged on the stirring shaft, and the arrangement directions of the axial angles alpha of the two adjacent groups of blades are opposite. When the slurry is rotated at a high speed, because the two adjacent groups of blades are connected with the shaft in a staggered manner, and the axial angles alpha of the blades are opposite, the slurry can be impacted with the upstream surfaces of the 2 adjacent groups of blades immediately after being thrown out along the end surfaces and the inclined surfaces of the 1 group of blades, so that the particle dispersion effect and the slurry shearing effect are improved.

Preferably, the sealing assembly comprises a stirring shaft sealing seat, a stirring shaft skeleton oil seal and a first stirring shaft sealing ring, a stirring shaft mounting hole matched with a stirring shaft of the stirring paddle is formed in the middle of the stirring shaft sealing seat, the stirring shaft skeleton oil seal and the first stirring shaft sealing ring are respectively mounted in the stirring shaft mounting hole along the axial direction, the stirring shaft sealing seat is sleeved on the stirring shaft of the stirring paddle during mounting, and the first stirring shaft sealing ring is arranged towards one side of a blade of the stirring paddle. When operating condition, the thick liquid has the trend of invading seal assembly along the (mixing) shaft axial, because contain the particulate matter not of uniform size in the thick liquid, when the (mixing) shaft is rotatory, the thick liquid is attached to epaxial, must produce the friction to the sealing material, especially remain the thick liquid in sealing material clearance department, become great hard particulate matter after the consolidation, and difficult quilt is clear away, it is of a specified duration, can damage sealedly, the leakage appears, sealed if the exclusive use oil blanket, the wadding is sealed, the sealing washer etc., then all can produce above-mentioned phenomenon, but this seal assembly adopts the integrated configuration of sealing washer with the skeleton oil blanket, can effectually prevent the thick liquid like this and invade the seal along rotatory (mixing) shaft, thereby service life is improved.

Preferably, the paddle shaft seal base is provided with a seal base convex ring which is convenient to clean and faces to the middle of one side face of the paddle blade along the circumferential direction of the paddle shaft mounting hole. The added convex ring of the sealing seat can enable the cleaning water to form a turbulent effect at the position, thereby conveniently washing away slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring, reducing the residual slurry at the position to the maximum extent and further prolonging the service life.

Preferably, a second stirring paddle shaft sealing ring is arranged on the inner wall of the sealing seat convex ring. By designing the two sealing rings, a gap is reserved between the sealing ring and between the sealing ring and the framework oil seal, so that lubricating oil can be stored in the gap, and an oil film can be formed on the interface of the relative motion of the stirring shaft and the sealing ring during stirring operation, so that friction is reduced, sealing is formed, and the service life can be further prolonged.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the stirring barrel is designed to be a sealing structure, and the stirring paddle is designed to rotate at a high speed, so that cement particles rotating at the high speed continuously impact the barrel wall and are sheared mutually under the action of centrifugal acceleration, materials are fully disturbed in the stirring barrel, uniformly mixed and thoroughly dispersed, sufficient conditions are created for full hydration of cement, and all indexes of the prepared grouting material slurry are superior to those of grouting material slurry prepared by the existing grouting machine;

2. the stirring barrel is designed into a horizontal structure, so that a turbulent flow area is formed on the back surface of a blade of the stirring paddle along with the rotation of the stirring paddle, and slurry can flow irregularly and impact each other in the stirring barrel, so that cement particles are rapidly dispersed, and cement molecules are fully hydrated;

3. the rotating speed of the stirring paddle is designed to be larger than or equal to 400rpm, and the linear speed of the paddle of the stirring paddle is larger than or equal to 7m/s, so that cement particles rotating at high speed continuously impact the barrel wall and are sheared mutually under the action of centrifugal acceleration, materials are fully disturbed in the stirring barrel, are uniformly mixed and are thoroughly dispersed, and sufficient conditions are created for full hydration of cement, so that the prepared grouting material slurry has better index fluidity, bleeding rate and the like than the grouting material slurry prepared by the existing grouting machine;

4. when the ratio of the rotating diameter of the paddle of the stirring paddle to the inner diameter of the stirring barrel is lower than 0.85, the disturbance performance of the paddle to the slurry is poor, and particularly in the initial stage of stirring, the stirring water is concentrated at the bottom of the stirring barrel, so that the powder is difficult to disperse, and the rapid pulping is not facilitated;

5. the axial angle alpha of the paddle directly influences the dispersion effect and the output torque of the motor, and when the alpha is larger than 80 degrees, the pressure of the paddle on the slurry is reduced, so that the axial movement of the slurry is not facilitated, and the dispersion effect is influenced; when the alpha is less than 15 degrees, although the pressure of the paddle on the slurry is improved, the disturbance on the slurry is increased, and the dispersion effect of particles is also facilitated, the output torque of the motor is greatly increased, the manufacturing cost is increased, and the economical efficiency and the scientificity of equipment are lost;

6. when the slurry is rotated at a high speed, because the two adjacent groups of blades are connected with the shaft in a staggered manner, and the axial angles alpha of the blades are opposite, the slurry can impact the upstream surfaces of the 2 adjacent groups of blades immediately after being thrown out along the end surfaces and the inclined surfaces of the 1 group of blades, so that the particle dispersion effect and the slurry shearing effect are improved;

7. when the ratio of the effective acting width of the paddle of the stirring paddle to the net length of the stirring barrel is lower than 0.2, the disturbance force of the paddle on the slurry is reduced, the axial fluidity of the slurry is poor, and the dispersion of particles is not facilitated; when the ratio of the effective action width of the paddle of the stirring paddle to the net length of the stirring barrel is more than 0.8, the axial flow space of the slurry is reduced, the horizontal exchange position of the slurry is limited, the nonuniformity of the whole slurry is increased, and meanwhile, the shaft power output by the motor is greatly increased along with the increase of the effective action width of the paddle, so that the equipment loses economy;

8. when the stirring shaft rotates, the slurry is attached to the shaft and inevitably rubs sealing materials, particularly, the slurry remained in gaps of the sealing materials is solidified into larger hard particles which are not easy to remove, and can damage the sealing and leak after being solidified, and if the slurry is singly used for oil seal sealing, soft filler sealing, sealing rings and the like, the phenomena can be generated;

9. the added convex ring of the sealing seat can enable the cleaning water to form a turbulent flow effect at the position, thereby being capable of conveniently washing away slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring, reducing the residual slurry at the position to the maximum extent and further prolonging the service life;

10. by designing the two sealing rings, a gap is reserved between the sealing ring and between the sealing ring and the framework oil seal, so that lubricating oil can be stored in the gap, and an oil film can be formed on the interface of the relative motion of the stirring shaft and the sealing ring during stirring operation, so that friction is reduced, sealing is formed, and the service life can be further prolonged;

11. the second stirring paddle shaft sealing ring is arranged at the port, facing the paddle, of the sealing seat convex ring, so that the second stirring paddle shaft sealing ring is as close as possible to the port, facing the paddle, of the sealing seat convex ring, and therefore the gap between the inner wall of the sealing seat convex ring and the stirring shaft can be further reduced, the residue of slurry can be avoided, and the service life is prolonged;

12. the outer edge of the port of the blade, facing the convex ring of the sealing seat, is designed into a round angle, so that the formation of a turbulence effect is facilitated, and slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring can be more conveniently flushed.

Drawings

FIG. 1 is a schematic structural view of a pulping apparatus.

Fig. 2 is a schematic structural diagram of the stirring barrel and the stirring paddle.

Fig. 3 is a schematic structural view of the stirring paddle.

Fig. 4 is a schematic structural view of fig. 3 rotated by 90 °.

Fig. 5 is a partially enlarged schematic view of fig. 1.

Fig. 6 is a schematic structural view of the mixing drum and the second connecting cylinder before assembly.

Fig. 7 is a schematic structural view of the assembled mixing drum and the second connecting cylinder.

Fig. 8 is a schematic structural view of the loose joint locking ring before assembly with the second connecting cylinder.

Fig. 9 is a schematic structural view of the loose joint locking ring assembled with the second connecting cylinder.

Fig. 10 is a schematic structural view of the weighing mechanism.

Fig. 11 is a schematic view of the hopper structure.

Fig. 12 is a schematic structural view of a bleeding test mechanism.

As shown in the figure: a mixing barrel 1, a mixing paddle 2, a mixing shaft 2a, a blade 2b, a driving mechanism 3, a driving motor 3a, a first connecting barrel 3b, a coupler 3c, a second connecting barrel 3d, a bearing seat 3e, a bearing 3f, a sealing component 4, a mixing paddle shaft sealing seat 4a, a mixing paddle shaft framework oil seal 4b, a first mixing paddle shaft sealing ring 4c, a sealing seat convex ring 4d, a second mixing paddle shaft sealing ring 4e, a quick-connection component 5, a connecting disc 5a, an end cover 5b, a movable locking ring 5c, an elastic piece 5d, a sliding positioning clamping bead 5e, a sliding positioning clamping groove 5f, a butt positioning hole 5g, a butt positioning column 5h, a mixing barrel mouth part sealing ring 5i, a weighing mechanism 6, a weighing mounting frame 6a, a weighing sensor 6b, a hopper 6c, a hopper mounting frame 6d, a hopper movable plug 6e, a mounting lug 6f and a mounting column 6g, the device comprises a weighing mounting frame mounting flange 6h, a movable plug operating rod 6i, a pull ring 6j, a support base 7, a water tank 8, a bleeding test mechanism 9, a transparent bleeding test cylinder 9a, a bleeding test cylinder cover 9b, a pressure air quick joint 9c, an image acquisition device 9d and a bleeding test sealing gasket 9 e.

Detailed Description

Please refer to fig. 1-12, in an embodiment of the present invention, a high-speed mixing tank with a shaft sealing structure, includes mixing tank 1, mixing paddle 2 and sealing component 4 that are mutually matched, mixing tank 1 is a sealing structure, mixing paddle 2 is rotatably installed in mixing tank 1 at a high speed, and sealing component 4 is used for sealing the shaft of mixing tank 1. Through designing the agitator for seal structure to with the stirring rake design for high-speed rotatory, the cement granule of high-speed rotatory like this constantly strikes the bucket wall and shears each other under centrifugal acceleration's effect, makes the material fully disturb in the agitator, the misce bene, the dispersion is thorough, has created sufficient condition for cement fully hydrating, thereby makes each item index of the grout slurry body of making all be superior to the grout slurry body that current pulping machine made.

The stirring barrel 1 is of a horizontal structure, and the rotating speed of the stirring paddle 2 is more than or equal to 400 rpm. The stirring barrel is designed into a horizontal structure, so that a turbulent flow area is formed on the back surface of a blade of the stirring paddle along with the rotation of the stirring paddle, and slurry can flow irregularly and impact each other in the stirring barrel, so that cement particles are rapidly dispersed, and cement molecules are fully hydrated; the rotating speed of the stirring paddle is designed to be more than or equal to 400rpm, and the linear speed of the paddle 2b of the stirring paddle is more than or equal to 7m/s, so that cement particles rotating at a high speed continuously impact the wall of the stirring barrel and are sheared mutually under the action of centrifugal acceleration, materials are fully disturbed in the stirring barrel, the materials are uniformly mixed and dispersed thoroughly, sufficient conditions are created for full hydration of cement, and therefore the prepared grouting material slurry is superior to the grouting material slurry prepared by the existing grouting machine in various indexes such as fluidity, bleeding rate and the like.

The ratio of the rotating diameter of the paddle of the stirring paddle 2 to the inner diameter of the stirring barrel 1 is more than or equal to 0.7 and less than 1, and the ratio of the effective acting width of the paddle of the stirring paddle 2 to the net length of the stirring barrel 1 is 0.2-0.8. When the ratio of the effective acting width of the paddle of the stirring paddle to the net length of the stirring barrel is lower than 0.2, the disturbance force of the paddle on the slurry is reduced, the axial fluidity of the slurry is poor, and the dispersion of particles is not facilitated; when the ratio of the effective action width of the paddle of the stirring paddle to the net length of the stirring barrel is more than 0.8, the axial flow space of the slurry is reduced, the horizontal exchange position of the slurry is limited, the nonuniformity of the whole slurry is increased, and meanwhile, the shaft power output by the motor is greatly increased along with the increase of the effective action width of the paddle, so that the equipment loses economy; when the ratio of the rotating diameter of the paddle of the stirring paddle to the inner diameter of the stirring barrel is less than 0.85, the disturbance performance of the paddle to the slurry is poor, and particularly in the initial stage of stirring, the stirring water is concentrated at the bottom of the stirring barrel, so that the powder is difficult to disperse, and the rapid pulping is not facilitated.

The stirring paddle 2 comprises a stirring shaft 2a, at least one group of blades 2b is arranged on the stirring shaft 2a along the axial direction, each group of blades 2b comprises at least one blade 2b arranged along the circumferential direction of the stirring shaft 2a, and the axial angle alpha of each blade 2b ranges from 15 degrees to 80 degrees. The axial angle alpha of the paddle directly influences the dispersion effect and the output torque of the motor, and when the alpha is larger than 80 degrees, the pressure of the paddle on the slurry is reduced, so that the axial movement of the slurry is not facilitated, and the dispersion effect is influenced; when the alpha is less than 15 degrees, although the pressure of the paddle on the slurry is improved, the disturbance on the slurry is increased, and the dispersion effect of particles is also facilitated, the output torque of the motor is greatly increased, the manufacturing cost is increased, and the economical efficiency and the scientificity of equipment are lost. When at least two groups of blades 2b are axially arranged on the stirring shaft 2a, the arrangement directions of the axial angles alpha of the two adjacent groups of blades 2b are opposite. When the slurry is rotated at a high speed, because the two adjacent groups of blades are connected with the shaft in a staggered manner, and the axial angles alpha of the blades are opposite, the slurry can be impacted with the upstream surfaces of the 2 adjacent groups of blades immediately after being thrown out along the end surfaces and the inclined surfaces of the 1 group of blades, so that the particle dispersion effect and the slurry shearing effect are improved.

The sealing assembly 4 comprises a stirring paddle shaft sealing seat 4a, a stirring paddle shaft framework oil seal 4b and a first stirring paddle shaft sealing ring 4c, wherein a stirring paddle shaft mounting hole matched with a stirring shaft 2a of the stirring paddle 2 is formed in the middle of the stirring paddle shaft sealing seat 4a, the stirring paddle shaft framework oil seal 4b and the first stirring paddle shaft sealing ring 4c are respectively mounted in the stirring paddle shaft mounting hole along the axial direction, the stirring paddle shaft sealing seat 4a is sleeved on the stirring shaft 2a of the stirring paddle 2 during mounting, and the first stirring paddle shaft sealing ring 4c is arranged towards one side of the paddle 2b of the stirring paddle 2. When operating condition, the thick liquid has the trend of invading seal assembly along the (mixing) shaft axial, because contain the particulate matter not of uniform size in the thick liquid, when the (mixing) shaft is rotatory, the thick liquid is attached to epaxial, must produce the friction to the sealing material, especially remain the thick liquid in sealing material clearance department, become great hard particulate matter after the consolidation, and difficult quilt is clear away, it is of a specified duration, can damage sealedly, the leakage appears, sealed if the exclusive use oil blanket, the wadding is sealed, the sealing washer etc., then all can produce above-mentioned phenomenon, but this seal assembly adopts the integrated configuration of sealing washer with the skeleton oil blanket, can effectually prevent the thick liquid like this and invade the seal along rotatory (mixing) shaft, thereby service life is improved.

The paddle shaft seal seat 4a is provided with a seal seat convex ring 4d which is convenient to clean and faces the middle part of one side surface of the paddle 2b along the circumferential direction of the paddle shaft mounting hole. The added convex ring of the sealing seat can enable the cleaning water to form a turbulent effect at the position, thereby conveniently washing away slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring, reducing the residual slurry at the position to the maximum extent and further prolonging the service life. And a second stirring paddle shaft sealing ring 4e is arranged on the inner wall of the sealing seat convex ring 4 d. By designing the two sealing rings, a gap is reserved between the sealing ring and between the sealing ring and the framework oil seal, so that lubricating oil can be stored in the gap, and an oil film can be formed on the interface of the relative motion of the stirring shaft and the sealing ring during stirring operation, so that friction is reduced, sealing is formed, and the service life can be further prolonged. The second stirring shaft sealing ring 4e and the first stirring shaft sealing ring 4c are arranged at intervals, and the second stirring shaft sealing ring 4e is arranged at the port of the sealing seat convex ring 4d facing the blade 2 b. Through setting up second stirring paddle shaft sealing washer the seal receptacle bulge loop is towards the port department of paddle, makes the orientation that the second stirring paddle shaft sealing washer is close to the seal receptacle bulge loop as far as the port of paddle can further reduce the clearance between seal receptacle bulge loop inner wall and the (mixing) shaft like this to can avoid remaining of thick liquid, improve life. And the outer edge of the sealing seat convex ring 4d facing the port of the blade 2b is provided with a fillet. The outer edge of the port of the blade, facing the convex ring of the sealing seat, is designed into a round angle, so that the formation of a turbulence effect is facilitated, and slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring can be more conveniently flushed.

The utility model provides a pulping equipment, includes agitator 1 and stirring rake 2 and actuating mechanism 3, seal assembly 4 that mutually support, connects subassembly 5, weighing machine structure 6 and bleeding test mechanism 9 soon, agitator 1 is seal structure, stirring rake 2 can rotate at a high speed and install in agitator 1, actuating mechanism 3 is used for the drive stirring rake 2 is high-speed rotatory, seal assembly 4 is used for the sealed of agitator 1, connect subassembly 5 soon to be used for the quick installation and the dismantlement of agitator 1, weighing machine structure 6 is used for weighing of material and carries the material extremely in agitator 1, bleeding test mechanism 9 is used for measuring the bleeding rate of the grout slurry body of making. Through designing agitator 1 as seal structure to with stirring rake 2 design for high-speed rotatory, the cement granule of high-speed rotatory like this constantly strikes the bucket wall and shears each other under centrifugal acceleration's effect, makes the material fully disturb in the agitator, the misce bene, the dispersion is thorough, has created sufficient condition for cement fully hydrate, thereby makes each item index of the grout slurry body of making all be superior to the grout slurry body that current pulp-making machine made.

Stirring equipment in the pharmaceutical industry is mainly applied to the aspect of material mixing, including dry powder mixing and solid-liquid and liquid-liquid mixing. The rotation speed of the mixer is not high and is not more than 300rpm generally. The homogenizer in the chemical industry has high rotating speed, but is mainly used for shearing, and is essentially different from the stirring barrel 1.

The upper portion of above-mentioned agitator 1 is equipped with the agitator feed inlet, the sealed lid of being equipped with is stamped on the agitator feed inlet, still be equipped with agitator water inlet and agitator discharge gate on the agitator 1, the agitator water inlet passes through water intaking valve and water source intercommunication, the agitator discharge gate is equipped with the bleeder valve.

The stirring barrel 1 is of a horizontal structure. Through designing agitator 1 for horizontal structure, like this, along with the rotation of stirring rake 2, the surface of a poor water of paddle 2b of stirring rake 2 forms turbulent flow district promptly, and the thick liquids just can present random flow and mutual striking at agitator 1, makes the cement granule obtain fast dispersion, makes the cement molecule obtain fully hydrated. The rotating speed of the stirring paddle 2 is more than or equal to 400 rpm. Through the design process of the rotating speed of the stirring paddle 2 which is more than or equal to 400rpm and the linear speed of the paddle 2b of the stirring paddle 2 which is more than or equal to 7m/s, the cement particles rotating at high speed continuously impact the barrel wall and shear each other under the action of centrifugal acceleration, so that the materials are fully disturbed in the stirring barrel 1, are uniformly mixed and are thoroughly dispersed, and sufficient conditions are created for fully hydrating the cement, so that the prepared grouting material slurry has better index fluidity, bleeding rate and the like than the grouting material slurry prepared by the existing grouting machine. The ratio of the rotating diameter of the paddle of the stirring paddle 2 to the inner diameter of the stirring barrel 1 is more than or equal to 0.7 and less than 1. When the ratio of the rotating diameter of the paddle of the stirring paddle 2 to the inner diameter of the stirring barrel 1 is less than 0.85, the disturbance performance of the paddle 2b to the slurry is poor, and particularly in the initial stage of stirring, the stirring water is concentrated at the bottom of the stirring barrel, so that the powder is difficult to disperse, and the rapid pulping is not facilitated. The ratio of the effective width of the paddle of the stirring paddle 2 to the net length of the stirring barrel 1 is 0.2-0.8, namely 0.2 ≦ (b1+ b2+ b3+ b4)/b0 ≦ 0.80 in the figure. When the ratio of the effective acting width of the paddle of the stirring paddle 2 to the net length of the stirring barrel 1 is lower than 0.2, the disturbance force of the paddle 2b to the slurry is reduced, the axial fluidity of the slurry is deteriorated, and the dispersion of particles is not facilitated; when the ratio of the effective action width of the paddle of the stirring paddle 2 to the net length of the stirring barrel 1 is greater than 0.8, the axial flow space of the slurry is reduced, the horizontal exchange position of the slurry is limited, the nonuniformity of the whole slurry is increased, and meanwhile, along with the increase of the effective action width of the paddle, the shaft power output by the motor is greatly increased, so that the equipment loses economy.

The stirring paddle 2 comprises a stirring shaft 2a, at least one group of blades 2b is arranged on the stirring shaft 2a along the axial direction, each group of blades 2b comprises at least one blade 2b arranged along the circumferential direction of the stirring shaft 2a, and the axial angle alpha of each blade 2b ranges from 15 degrees to 80 degrees. The axial angle alpha of the paddle 2b directly influences the dispersion effect and the output torque of the motor, and when the alpha is larger than 80 degrees, the pressure of the paddle 2b on the slurry is reduced, so that the axial movement of the slurry is not facilitated, and the dispersion effect is influenced; when the angle alpha is less than 15 degrees, although the pressure of the paddle 2b to the slurry is improved, the disturbance to the slurry is increased, and the dispersion effect of particles is also facilitated, the output torque of the motor is greatly increased, the manufacturing cost is increased, and the economical efficiency and the scientificity of equipment are lost. The stirring shaft 2a is provided with at least two groups of blades 2b along the axial direction, and the arrangement directions of the axial angles alpha of the two adjacent groups of blades 2b are opposite. When the slurry is rotated at a high speed, because the two adjacent groups of blades 2b are connected with the shaft in a staggered manner, and the axial angles alpha of the blades 2b are opposite, when the slurry is quickly thrown out along the end surface and the inclined surface of the 1 group of blades 2b, the slurry can immediately impact the upstream surface of the 2 adjacent groups of blades 2b, so that the particle dispersion effect and the slurry shearing effect are improved.

The quick-connection assembly 5 comprises a connection disc 5a arranged at the opening of the stirring barrel 1 and an end cover 5b matched with the connection disc 5a, wherein the end cover 5b is of an annular structure, the connection disc 5a is connected with the end cover 5b in a sealing mode, a movable connection locking ring 5c capable of rotating along the circumferential direction is sleeved on the outer wall of the end cover 5b, an inner thread is arranged on one side of the connection disc 5a and faces the inner wall of the movable connection locking ring 5c, and an outer thread matched with the inner thread is arranged on the outer wall of the connection disc 5 a. Generally, the mixer drum 1 needs to be dismounted periodically for cleaning and maintenance, and the existing connection mode of the mixer drum and the end cover includes: flange connection, clamp connection, buckle connection and screw thread connection, wherein the flange connection needs bolt fastening and is time-consuming and labor-consuming to disassemble; the clamp connection needs a large chuck, and the chuck needs 2 persons to operate when the clamp is sleeved in a butting way; the buckle connection structure is complex and needs a large space; the application range of the screw thread connection mode is limited, and the quick connection assembly can easily and conveniently complete the connection and the disassembly between the connection disc 5a and the end cover 5b by rotating the loose joint locking ring 5c, thereby greatly reducing the labor intensity and greatly improving the efficiency.

A plurality of sliding positioning clamping beads 5e are installed on the inner wall of the loose joint locking ring 5c in the circumferential direction through an elastic piece 5d, and sliding positioning clamping grooves 5f are formed in the outer wall of the end cover 5b in the circumferential direction corresponding to the sliding positioning clamping beads 5 e. Of course, other configurations may be used. The elastic member 5d is a spring. Of course, other types of springs may be used.

A butt joint positioning hole 5g and a butt joint positioning column 5h which are matched with each other are arranged between the end cover 5b and the connecting disc 5a, the butt joint positioning hole 5g is arranged on the end cover 5b or the connecting disc 5a, and the corresponding butt joint positioning column 5h is arranged on the connecting disc 5a or the end cover 5 b. The butt joint positioning hole 5g and the butt joint positioning column 5h which are matched with each other are additionally arranged, so that the end cover 5b and the connecting disc 5a are conveniently connected, and the efficiency is further improved. The butting positioning holes 5g are arranged at intervals along the circumferential direction of the end cover 5b or the connecting disc 5 a. And a sealing ring 5i of the opening part of the stirring barrel is arranged between the end cover 5b and the connecting disc 5 a.

The sealing component 4 comprises a stirring paddle shaft sealing seat 4a, a stirring paddle shaft framework oil seal 4b and a first stirring paddle shaft sealing ring 4c, the middle part of the paddle shaft seal seat 4a is provided with a paddle shaft mounting hole matched with the stirring shaft 2a of the stirring paddle 2, the stirring paddle shaft framework oil seal 4b and the first stirring paddle shaft sealing ring 4c are respectively arranged in the stirring paddle shaft mounting hole along the axial direction, the middle part of the end cover 5b is provided with a seal seat mounting hole matched with the outer diameter of the stirring paddle shaft seal seat 4a, when in mounting, the stirring paddle shaft seal seat 4a is hermetically mounted in the seal seat mounting hole, and the stirring paddle shaft seal seat 4a is sleeved on the stirring shaft 2a of the stirring paddle 2, and the first stirring paddle shaft seal ring 4c is arranged towards one side of the paddle 2b of the stirring paddle 2. When operating condition, the thick liquid has the trend of invading seal assembly 4 along (mixing) shaft 2a axial, because contain the particulate matter not of uniform size in the thick liquid, when (mixing) shaft 2a is rotatory, the thick liquid is attached to epaxial, must produce the friction to the sealing material, especially remain the thick liquid in sealing material clearance department, become great hard particulate matter after the consolidation, and difficult quilt is disposed away, it is of a specified duration, can damage sealed, the leakage appears, sealed if the exclusive use oil blanket, the wadding is sealed, the sealing washer etc., then all can produce above-mentioned phenomenon, but this seal assembly 4 adopts the integrated configuration of sealing washer with the skeleton oil blanket, can effectually prevent the thick liquid like this and invade the seal along rotatory (mixing) shaft 2a, thereby service life has been improved.

The paddle shaft seal seat 4a is provided with a seal seat convex ring 4d which is convenient to clean and faces the middle part of one side surface of the paddle 2b along the circumferential direction of the paddle shaft mounting hole. The added convex ring 4d of the sealing seat can enable the cleaning water to form a turbulent effect at the position, thereby conveniently washing away slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring, reducing the residual slurry at the position to the maximum extent and further prolonging the service life. And a second stirring paddle shaft sealing ring 4e is arranged on the inner wall of the sealing seat convex ring 4 d. By designing the two sealing rings, a gap is reserved between the sealing ring and between the sealing ring and the framework oil seal, so that lubricating oil can be stored in the gap, and an oil film is formed on the interface of the relative motion of the stirring shaft 2a and the sealing ring during stirring operation, so that friction is reduced, sealing is formed, and the service life can be further prolonged.

The second stirring shaft sealing ring 4e and the first stirring shaft sealing ring 4c are arranged at intervals, and the second stirring shaft sealing ring 4e is arranged at the port of the sealing seat convex ring 4d facing the blade 2 b. The second stirring paddle shaft sealing ring 4e is arranged at the port of the sealing seat convex ring 4d facing the blade 2b, so that the second stirring paddle shaft sealing ring 4e is close to the port of the sealing seat convex ring 4d facing the blade 2b as much as possible, the gap between the inner wall of the sealing seat convex ring 4d and the stirring shaft 2a can be further reduced, the residue of slurry can be avoided, and the service life is prolonged. And the outer edge of the sealing seat convex ring 4d facing the port of the blade 2b is provided with a fillet. The outer edge of the sealing seat convex ring 4d facing the port of the blade 2b is designed into a round angle, so that the formation of a turbulence effect is facilitated, and slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring can be more conveniently washed away.

The driving mechanism 3 comprises a driving motor 3a for driving the stirring paddle 2 to rotate and a measuring element for measuring the current and/or power of the driving motor 3a, wherein the measuring element is connected with the driving motor 3 a. The current and/or power of the driving motor 3a is measured by the added measuring element, so that the corresponding value of the fluidity of the slurry can be obtained by the current and/or power. The measuring element is connected with the upper computer. Through being connected measuring element and host computer such as digit control machine and realizing real-time communication, in case the mobility of thick liquid reaches the standard like this, then host computer alright warning suggestion personnel operation, also can directly shut down the warning to can guarantee the best effect of slurrying on the one hand, on the other hand can also save time and the energy.

The driving mechanism 3 further comprises a first connecting cylinder 3b, and an output shaft end of the driving motor 3a is inserted into the first connecting cylinder 3 b. The first connecting cylinder 3b is added to facilitate the installation of the driving motor 3 a. The output shaft of the driving motor 3a is positioned in the first connecting cylinder 3b, and a coupler 3c used for connecting a stirring shaft 2a of the stirring paddle 2 is arranged on the output shaft of the driving motor 3 a. The additional shaft coupling 3c facilitates the connection between the output shaft of the driving motor 3a and the stirring shaft 2a of the stirring paddle 2; meanwhile, the shaft coupling 3c is designed in the first connecting cylinder 3b, so that the dustproof effect can be achieved. In order to facilitate the installation of the coupler 3c, the first connecting cylinder 3b is provided with an installation window, and a sealing cover can be installed on the installation window.

The driving mechanism 3 further comprises a second connecting cylinder 3d, one end of the second connecting cylinder 3d is coaxially connected with the first connecting cylinder 3b, the other end of the second connecting cylinder 3d is connected with the end cover 5b, and the second connecting cylinder 3d and the driving motor 3a are respectively arranged at two ends of the first connecting cylinder 3 b. The second connecting cylinder 3d and the end cover 5b are connected into a whole in a welding mode, a step used for installing and clamping the stirring paddle shaft sealing seat 4a is formed, and a sealing ring is installed in the step. And a bearing seat 3e is arranged on the inner wall of the second connecting cylinder 3d, and a bearing 3f matched with a stirring shaft 2a of the stirring paddle 2 is arranged in the bearing seat 3 e. Through adding and establishing second connecting cylinder 3d and add the bearing 3f who is used for installing stirring rake 2 in second connecting cylinder 3d, made things convenient for the installation of stirring rake 2 like this. Meanwhile, the paddle shaft seal seat 4a is fixed on the corresponding bearing seat 3e through bolt installation. The number of the bearing seats 3e is two, the two bearing seats 3e are respectively arranged on the inner walls at the two ends of the second connecting cylinder 3d, and the number of the bearings 3f is also two correspondingly. Through adopting duplex bearing fixed, both ensured the high-speed rotatory stability of stirring rake 2 like this, be convenient for agitator 1 again and pull down the washing.

Above-mentioned weighing machine constructs 6 and includes weighing-mounting frame 6a, weighing sensor 6b, hopper mounting bracket 6c and hopper 6d, hopper 6d is installed on the hopper mounting bracket 6c, hopper mounting bracket 6c is installed weighing sensor 6b is last, weighing sensor 6b installs weighing-mounting frame 6 a's upper end, correspond in the hopper 6d the position of hopper 6 d's discharge gate is equipped with and is used for blockking up the hopper activity stopper 6e of discharge gate. The weighing mechanism 6 can quickly and accurately measure the weight of the material in the hopper 6d through the weighing sensor 6b, so that the pulping quality can be improved.

The outer walls of the two sides of the hopper 6d are respectively provided with an insertion lug 6f, the positions, corresponding to the two insertion lugs 6f, of the hopper mounting rack 6c are respectively provided with an insertion column 6g, and the insertion columns 6g are matched with the insertion lugs 6 f. Through adding cartridge post 6g and the cartridge ear 6f of establishing, can realize taking off hopper 6d on the one hand and feed, made things convenient for the operation, on the other hand when weighing sensor has gone bad, also can realize weighing through directly weighing hopper 6 d. And a semi-ring-structured weighing mounting frame mounting flange 6h is arranged at the lower end of the weighing mounting frame 6 a. The weighing mounting frame mounting flange 6h is additionally arranged, so that the weighing mounting frame 6a can be conveniently mounted and dismounted. The lower end of the weighing mounting frame 6a is mounted on a flange plate of the connecting cylinder through a mounting flange 6h of the weighing mounting frame.

The hopper movable plug 6e is of a frustum structure, the small end of the frustum structure is arranged downwards, the diameter of the small end of the frustum structure is smaller than that of the discharge port, and the diameter of the large end of the frustum structure is larger than that of the discharge port. Through designing hopper activity stopper 6e into the frustum structure to arrange the tip end of frustum structure down, and the diameter of the tip end of frustum structure is less than the diameter of discharge gate, the big tip end diameter of frustum structure is greater than the diameter of discharge gate has made things convenient for hopper activity stopper 6e to block up and open like this. One side of the hopper movable plug 6e is movably connected with a movable plug operating rod 6 i. One side of the hopper movable plug 6e is movably connected with a movable plug operating rod 6i, so that when the hopper movable plug 6e is lifted upwards through the movable plug operating rod 6i, the hopper movable plug 6e gradually changes from a horizontal state to a vertical state under the self weight and the pressure of materials, and a discharge hole is opened; when the discharge hole needs to be blocked, the hopper movable plug 6e gradually changes from a vertical state to a horizontal state in the process of placing the hopper movable plug 6e back to the discharge hole through the movable plug operating rod 6 i; the operation process is simple, convenient and efficient. The upper end of the movable plug operating rod 6i is provided with a pull ring 6j which is convenient to operate. The added pull ring 6j facilitates manual or mechanical operation.

Correspond on the support base 7 the position of agitator 1 is equipped with bleeding test mechanism 9, bleeding test mechanism 9 is including the experimental barrel of transparent bleeding 9a and the experimental barrel lid of bleeding 9b of mutually supporting, the experimental barrel of transparent bleeding 9a and the experimental barrel lid of bleeding 9b all can be made by organic glass, the experimental barrel of transparent bleeding 9a is installed on the support base 7, need guarantee the levelness of the experimental barrel of transparent bleeding 9a during the experiment, be equipped with the scale on the outer wall of the experimental barrel of transparent bleeding 9a, be equipped with pressure air quick-operation joint 9c on the experimental barrel lid of bleeding 9 b. The prepared grouting material slurry is poured into the transparent bleeding test cylinder body 9a, the bleeding test cylinder body cover 9b is covered, and then the pressure air is introduced through the pressure air quick connector 9c, so that the bleeding test of the grouting material slurry can be completed on site, and the operation is simple, convenient and quick. An image acquisition device 9d is arranged on the support base 7 corresponding to the position of the graduated scale on the outer wall of the transparent bleeding test cylinder body 9a, the image acquisition device 9d faces the graduated scale, and the image acquisition device 9d is connected with an upper computer. The initial liquid level height a1 of the grouting material slurry is collected through the image collecting device 9d, the compressed air valve is opened after the grouting material slurry is kept still for 10min, the grouting material slurry is rapidly pressurized to the test pressure through the pressure air quick connector 9c, and after the grouting material slurry is pressurized for 5min, the isolated water level height a2 and the pressurized cement slurry level height a3 are collected through the image collecting device 9d, so that the pressure bleeding rate can be accurately calculated. And a bleeding test sealing gasket 9e is arranged between the transparent bleeding test cylinder body 9a and the bleeding test cylinder body cover 9 b. The added sealing gasket 9e for the bleeding test improves the sealing performance of the bleeding test, thereby further improving the test accuracy. The pressure air quick connector 9c is connected with a compressed air source, the compressed air source provides the maximum pressure which is not lower than 0.8MPa, and a pressure gauge with the maximum reading which is not lower than 1.0MPa and the minimum scale value of 0.02MPa is configured.

When the bleeding test is started, about 200ml of the prepared slurry is injected into the transparent bleeding test cylinder body 9a, then the bleeding test cylinder body cover 9b is tightly covered, and the pressure air quick connector 9c is connected. And starting video recording, recording the initial height a1, standing for 10min, opening a compressed air valve, rapidly pressurizing to the test pressure, and recording the isolated water surface height a2 and the pressurized cement slurry surface height a3 by video recording after pressurizing for 5 min.

Calculating the pressure bleeding rate (M)_yl)：

M_ylPressure bleeding rate

a 1-initial cement slurry height in millimeters (mm);

a 2-level height in millimeters (mm);

a 3-height after pressurization in millimeters (mm);

the above results are automatically completed by an upper computer connected with the image acquisition device 9d, and the results can be automatically displayed and have an uploading function. In the same time period, the pressure bleeding rate should be the arithmetic mean value (accurate to 0.1%) of two parallel test data as the test result of the time period.

When the connecting device is installed, the first connecting cylinder 3b and the second connecting cylinder 3d are installed together; then, the bearing, the propeller shaft seal seat 4a, the propeller shaft seal ring and the propeller shaft framework oil seal 4b are assembled; then, inserting the stirring paddle 2 into the container; then, the assembled part is arranged on a bracket base 7 through a bracket, and a water tank 8 is also arranged on the bracket base 7; aligning the butt joint positioning hole 5g and/or the butt joint positioning column 5h on the stirring barrel 1 with the butt joint positioning column 5h and/or the butt joint positioning hole 5g on the end cover 5b, closing the butt joint positioning holes, and then buckling the thread to rotate the loose joint locking ring 5c to complete the installation of the stirring barrel 1; meanwhile, the installation of the driving motor 3a is completed; and finally, mounting a weighing mechanism on a flange plate of the connecting cylinder through a weighing mounting frame mounting flange 6h, aligning a discharge port of the hopper 6d to a feed port of the stirring barrel on the stirring barrel 1 after the weighing mechanism is mounted, and suspending the hopper 6 d.

When the automatic feeding device works, firstly, the hopper 6d is taken down and proper materials (less than needed materials) are added into the hopper 6d, then the hopper 6d filled with the materials is arranged on the hopper mounting frame 6c for weighing, and the materials are continuously added until the materials reach the needed amount, or the materials are directly added into the hopper 6d without taking down the hopper 6d until the materials reach the needed amount; then, operating the movable plug operating rod 6i to fill the materials into the stirring barrel 1, and adding a corresponding amount of water into the stirring barrel 1 through a water inlet valve; then, covering and sealing a feed port of the stirring barrel on the stirring barrel 1; then starting the driving motor 3a to enable the stirring paddle 2 to reach a preset rotating speed, and controlling the driving motor 3a to stop when the measuring element detects that the fluidity of the slurry reaches a standard; and finally, opening a discharge valve on the stirring barrel 1 and discharging the slurry.

The principle of the measuring element for detecting the fluidity of the slurry is based on the relationship between the power of the driving motor 3a and the fluidity of the slurry, and specifically, the following is provided:

through repeated practice in the pulping process, it was found that: 1. after the feeding is finished, the power of the driving motor 3a is gradually and obviously increased along with the increase of the rotating speed of the stirring paddle 2, the maximum value is reached after the set maximum rotating speed is reached, then the power is slowly reduced, and the power can be reduced to a certain value after the slurry is uniformly stirred and is basically stable. 2. Under the condition of the same stirring amount (the total mass of the grouting material and the mixing water is the same), because the fluidity of different grouting material manufacturers or different water-cement ratios under the same stirring condition is different, the fluidity at the moment and the power of the driving motor 3a measured at a certain specific rotating speed form a good linear relation, and the calculation formula between the fluidity and the driving motor is y ═ ax + b (wherein y is the power, a is a fixed constant of the certain stirring amount, x is the fluidity, and b is a fixed constant of the certain stirring amount) according to the linear relation graph, so that under the condition that the stirring amount is fixed, the driving power under the specific rotating speed is measured, and the instant fluidity numerical value can be obtained through the calculation formula.

In addition, the equipment can also realize the field preparation and field use of the grouting material, the quality of each component material is controllable in the whole process, the phenomenon of falsification is completely avoided, and the grouting material prepared each time is ensured to completely meet the standard. Specifically, cement and grouting agent (dry powder such as calcite powder, mineral powder, silica fume, fly ash, water reducing agent, expanding agent, defoaming agent and the like) are poured into the stirring barrel 1, wherein the cement accounts for about 90%, the grouting agent accounts for about 10%, then the sealing cover is covered, and the driving motor 3a is started until the dry powder is uniformly stirred.

A pulping method of prestressed duct grouting material comprises the following steps:

s1: grouting the grouting material into a stirring barrel 1 of the pulping equipment;

s2: adding a corresponding amount of water into the stirring barrel 1;

s3: sealing the stirring barrel 1;

s4: starting a driving motor 3a of pulping equipment to enable a stirring paddle 2 in a stirring barrel 1 to reach a preset rotating speed;

s5: and when the power of the driving motor 3a is stable, stopping the driving motor 3 a.

In the embodiment, the stirring barrel 1 is designed to be a sealing structure, and the stirring paddle 2 is designed to rotate at a high speed, so that cement particles rotating at the high speed continuously impact the barrel wall and are sheared mutually under the action of centrifugal acceleration, so that materials are fully disturbed in the stirring barrel, uniformly mixed and thoroughly dispersed, and sufficient conditions are created for full hydration of cement, and all indexes of the prepared grouting material slurry are superior to those of grouting material slurry prepared by the existing grouting machine; by designing the stirring barrel 1 into a horizontal structure, the back water surface of the paddle 2b of the stirring paddle 2 forms a turbulent flow area along with the rotation of the stirring paddle 2, and slurry can flow irregularly and impact each other in the stirring barrel 1, so that cement particles are dispersed rapidly, and cement molecules are fully hydrated; through the design process of the rotating speed of the stirring paddle 2 which is more than or equal to 400rpm and the linear speed of the paddle 2b of the stirring paddle 2 which is more than or equal to 7m/s, the cement particles rotating at high speed continuously impact the barrel wall and shear each other under the action of centrifugal acceleration, so that the materials are fully disturbed in the stirring barrel 1, are uniformly mixed and are thoroughly dispersed, and sufficient conditions are created for fully hydrating the cement, so that the prepared grouting material slurry has better index fluidity, bleeding rate and the like than the grouting material slurry prepared by the existing grouting machine.

Meanwhile, when the ratio of the rotating diameter of the paddle of the stirring paddle 2 to the inner diameter of the stirring barrel 1 is lower than 0.85, the disturbance performance of the paddle 2b to the slurry is poor, and particularly in the initial stage of stirring, the stirring water is concentrated at the bottom of the stirring barrel, so that the powder is difficult to disperse, and the rapid pulping is not facilitated; the axial angle alpha of the paddle 2b directly influences the dispersion effect and the output torque of the motor, and when the alpha is larger than 80 degrees, the pressure of the paddle 2b on the slurry is reduced, so that the axial movement of the slurry is not facilitated, and the dispersion effect is influenced; when the alpha is less than 15 degrees, although the pressure of the paddle 2b to the slurry is improved, the disturbance to the slurry is increased, and the dispersion effect of particles is also facilitated, the output torque of the motor is greatly increased, the manufacturing cost is increased, and the economical efficiency and the scientificity of equipment are lost; when the slurry is rotated at a high speed, because the two adjacent groups of blades 2b are connected with the shaft in a staggered manner, and the axial angles alpha of the blades 2b are opposite, when the slurry is quickly thrown out along the end surface and the inclined surface of the blade 2b of 1 group, the slurry can immediately impact the upstream surface of the blade 2b of the adjacent group 2, so that the particle dispersion effect and the slurry shearing effect are improved; when the ratio of the effective acting width of the paddle of the stirring paddle 2 to the net length of the stirring barrel 1 is lower than 0.2, the disturbance force of the paddle 2b to the slurry is reduced, the axial fluidity of the slurry is deteriorated, and the dispersion of particles is not facilitated; when the ratio of the effective action width of the paddle of the stirring paddle 2 to the net length of the stirring barrel 1 is greater than 0.8, the axial flow space of the slurry is reduced, the horizontal exchange position of the slurry is limited, the nonuniformity of the whole slurry is increased, and meanwhile, along with the increase of the effective action width of the paddle, the shaft power output by the motor is greatly increased, so that the equipment loses economy.

In addition, generally, the mixer drum 1 needs to be removed periodically for cleaning and maintenance, and the conventional connection method of the mixer drum and the end cover includes: flange connection, clamp connection, buckle connection and screw thread connection, wherein the flange connection needs bolt fastening and is time-consuming and labor-consuming to disassemble; the clamp connection needs a large chuck, and the chuck needs 2 persons to operate when the clamp is sleeved in a butting way; the buckle connection structure is complex and needs a large space; the application range of the screw thread connection mode is limited, and the quick connection assembly can easily and conveniently complete the connection and the disassembly between the connection disc 5a and the end cover 5b by rotating the loose joint locking ring 5c, thereby greatly reducing the labor intensity and greatly improving the efficiency; the butt joint positioning hole 5g and the butt joint positioning column 5h which are matched with each other are additionally arranged, so that the end cover 5b and the connecting disc 5a are conveniently connected, and the efficiency is further improved; when operating condition, the thick liquid has the trend of invading seal assembly 4 along (mixing) shaft 2a axial, because contain the particulate matter not of uniform size in the thick liquid, when (mixing) shaft 2a is rotatory, the thick liquid is attached to epaxial, must produce the friction to the sealing material, especially remain the thick liquid in sealing material clearance department, become great hard particulate matter after the consolidation, and difficult quilt is disposed away, it is of a specified duration, can damage sealed, the leakage appears, sealed if the exclusive use oil blanket, the wadding is sealed, the sealing washer etc., then all can produce above-mentioned phenomenon, but this seal assembly 4 adopts the integrated configuration of sealing washer with the skeleton oil blanket, can effectually prevent the thick liquid like this and invade the seal along rotatory (mixing) shaft 2a, thereby service life has been improved.

Moreover, the added convex ring 4d of the sealing seat can enable the cleaning water to form a turbulent effect at the position, so that the slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring can be conveniently washed away, the residual slurry at the position can be reduced to the maximum extent, and the service life can be further prolonged; by designing the two sealing rings, a gap is reserved between the sealing rings and the framework oil seal, so that lubricating oil can be stored in the gap, and an oil film can be formed on the interface of the relative motion of the stirring shaft 2a and the sealing rings during stirring operation, so that friction is reduced, sealing is formed, and the service life can be further prolonged; the second stirring propeller shaft sealing ring 4e is arranged at the port of the sealing seat convex ring 4d facing the blade 2b, so that the second stirring propeller shaft sealing ring 4e is as close as possible to the port of the sealing seat convex ring 4d facing the blade 2b, and the gap between the inner wall of the sealing seat convex ring 4d and the stirring shaft 2a can be further reduced, thereby avoiding the residue of slurry and prolonging the service life; the outer edge of the sealing seat convex ring 4d facing the port of the blade 2b is designed into a round angle, so that the formation of a turbulence effect is facilitated, and slurry and particles on the sealing slurry facing surface of the shaft and the sealing ring can be more conveniently washed away.

In addition, the present embodiment measures the current and/or power of the driving motor 3a by the added measuring element, so that the corresponding value of the fluidity of the slurry can be obtained by the current and/or power; the measuring element is connected with the upper computer through a numerical control machine to realize real-time communication, so that once the fluidity of the slurry reaches the standard, the upper computer can give an alarm to prompt personnel to operate and can also directly stop the machine to give an alarm, thereby ensuring the optimal effect of pulping on one hand and saving time and energy on the other hand; the additional arrangement of the first connecting cylinder 3b facilitates the installation of the driving motor 3 a; the additional shaft coupling 3c facilitates the connection between the output shaft of the driving motor 3a and the stirring shaft 2a of the stirring paddle 2; the shaft coupling 3c is designed in the first connecting cylinder 3b, so that the dustproof effect can be achieved; the second connecting cylinder 3d is connected with the end cover 5b in a welding mode, a step for installing and clamping the stirring paddle shaft sealing seat 4a is formed, and a sealing ring is installed in the step; the second connecting cylinder 3d is connected with the end cover 5b in a welding mode, a step for installing and clamping the stirring paddle shaft sealing seat 4a is formed, and a sealing ring is installed in the step; through adopting duplex bearing fixed, both ensured the high-speed rotatory stability of stirring rake 2 like this, be convenient for agitator 1 again and pull down the washing.

In addition, the weighing mechanism 6 can quickly and accurately measure the weight of the materials in the hopper 6d through the weighing sensor 6b, so that the pulping quality can be improved; through the additionally arranged inserting columns 6g and the inserting lugs 6f, on one hand, the hopper 6d can be taken down for loading, the operation is convenient, and on the other hand, when the weighing sensor is damaged, the weighing can be realized through directly weighing the hopper 6 d; the additional installation flange 6h of the weighing installation frame facilitates the installation and the disassembly of the weighing installation frame 6 a; the hopper movable plug 6e is designed into a frustum structure, the small end of the frustum structure is arranged downwards, the diameter of the small end of the frustum structure is smaller than that of the discharge port, and the diameter of the large end of the frustum structure is larger than that of the discharge port, so that the hopper movable plug 6e is convenient to block and open; one side of the hopper movable plug 6e is movably connected with a movable plug operating rod 6i, so that when the hopper movable plug 6e is lifted upwards through the movable plug operating rod 6i, the hopper movable plug 6e gradually changes from a horizontal state to a vertical state under the self weight and the pressure of materials, and a discharge hole is opened; when the discharge hole needs to be blocked, the hopper movable plug 6e gradually changes from a vertical state to a horizontal state in the process of placing the hopper movable plug 6e back to the discharge hole through the movable plug operating rod 6 i; the operation process is simple, convenient and high in efficiency; the added pull ring 6j facilitates manual or mechanical operation.

In addition, the prepared grouting material slurry is poured into the transparent bleeding test cylinder, the bleeding test cylinder cover is covered, and the pressure air is introduced through the pressure air quick connector, so that the bleeding test of the grouting material slurry can be completed on site, and the operation is simple, convenient and quick; the initial liquid level height a1 of the grouting material slurry is collected through an image collecting device, a compressed air valve is started after the grouting material slurry is kept stand for 10min and is rapidly pressurized to test pressure through a pressure air quick connector, and after the grouting material slurry is pressurized for 5min, the isolated water level height a2 and the pressurized cement slurry level height a3 are collected through the image collecting device, so that the pressure bleeding rate can be accurately calculated, and the error is greatly reduced and the test accuracy is improved as human eye identification is not needed in the whole process; the sealing performance of the bleeding test is improved by adding the bleeding test sealing gasket, so that the test accuracy is further improved.

Finally, the device can also realize the on-site preparation of the grouting material, the quality of each component material is controllable in the whole process, the phenomenon of false finishing is completely avoided, and the grouting material prepared each time is ensured to completely meet the standard; compared with the existing grouting material which is prepared, packaged and transported, the grouting material is prevented from being wetted and losing efficacy in the transportation process, and the grouting material is prevented from being deteriorated and losing efficacy in the storage process due to environmental reasons and storage time reasons; avoid the environmental pollution and the artificial loss that secondary packing, transport arouse many times. Horizontal sealed agitator structure can make and wash water in a small amount just can be in the bucket high-speed no dead angle disturbance, guarantees that every position can both the sanitization in the bucket, and the washing water yield and the time that have significantly reduced, simultaneously fine avoided vertical agitator upper portion to wash not in place can lead to the grout thick liquid constantly to adhere to, pile up, solidify at the bucket inner wall and produce harmful effects.

Claims (10)

1. The utility model provides a high-speed agitator of tape spool seal structure, includes agitator (1) and stirring rake (2) and seal assembly (4) of mutually supporting, its characterized in that, agitator (1) is seal structure, but stirring rake (2) high-speed rotation install in agitator (1), seal assembly (4) are used for the sealed of the axle of agitator (1).

2. The high-speed stirring barrel with the shaft sealing structure as claimed in claim 1, wherein the stirring barrel (1) is of a horizontal structure, and the rotation speed of the stirring paddle (2) is greater than or equal to 400 rpm.

3. The high-speed stirring barrel with the shaft sealing structure as claimed in claim 1, wherein the ratio of the blade rotation diameter of the stirring blade (2) to the inner diameter of the stirring barrel (1) is greater than or equal to 0.7 and less than 1, and the ratio of the blade effective acting width of the stirring blade (2) to the net length of the stirring barrel (1) is 0.2-0.8.

4. The high-speed stirring barrel with the shaft sealing structure according to claim 1, wherein the stirring paddle (2) comprises a stirring shaft (2a), at least one group of blades (2b) is arranged on the stirring shaft (2a) along the axial direction, each group of blades (2b) comprises at least one blade (2b) arranged along the circumferential direction of the stirring shaft (2a), and the axial angle α of the blades (2b) ranges from 15 ° to 80 °.

5. The high-speed stirring barrel with the shaft sealing structure according to claim 4, wherein when at least two sets of blades (2b) are axially arranged on the stirring shaft (2a), the arrangement directions of the axial angles α of the two adjacent sets of blades (2b) are opposite.

6. The high-speed stirring barrel with the shaft sealing structure according to claim 1, wherein the sealing assembly (4) comprises a stirring shaft sealing seat (4a), a stirring shaft framework oil seal (4b) and a first stirring shaft sealing ring (4c), a stirring shaft mounting hole matched with the stirring shaft (2a) of the stirring paddle (2) is formed in the middle of the stirring shaft sealing seat (4a), the stirring shaft framework oil seal (4b) and the first stirring shaft sealing ring (4c) are respectively mounted in the stirring shaft mounting hole along the axial direction, when the stirring shaft sealing seat (4a) is mounted, the stirring shaft sealing seat (4a) is sleeved on the stirring shaft (2a) of the stirring paddle (2), and the first stirring shaft sealing ring (4c) is arranged towards one side of the blade (2b) of the stirring paddle (2).

7. The high-speed stirring barrel with the shaft sealing structure according to claim 6, wherein the stirring shaft sealing seat (4a) is provided with a sealing seat convex ring (4d) which is convenient to clean and faces to the middle of one side surface of the blade (2b) along the circumferential direction of the stirring shaft mounting hole.

8. The high-speed stirring barrel with the shaft sealing structure as claimed in claim 7, wherein the inner wall of the sealing seat convex ring (4d) is provided with a second stirring shaft sealing ring (4 e).

9. The high-speed stirring barrel with the shaft sealing structure as claimed in claim 8, wherein the second stirring shaft sealing ring (4e) is arranged at a distance from the first stirring shaft sealing ring (4c), and the second stirring shaft sealing ring (4e) is arranged at the port of the sealing seat convex ring (4d) facing the blade (2 b).

10. The high-speed mixing drum with shaft sealing structure according to claim 9, wherein the outer edge of the sealing seat convex ring (4d) facing the port of the blade (2b) is provided with a round angle.

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