CN113618906A

CN113618906A - Mortar mixer

Info

Publication number: CN113618906A
Application number: CN202110847731.XA
Authority: CN
Inventors: 吴立斌
Original assignee: Zhejiang Industry Polytechnic College
Current assignee: Zhejiang Industry Polytechnic College
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-11-09

Abstract

The invention provides a mortar stirrer, and belongs to the technical field of civil construction equipment. The stirring device comprises a frame, the churn, stirring rake and agitator motor, agitator motor's casing is fixed in the frame, the churn is fixed in the frame, be provided with pan feeding mouth and discharge gate on the churn, the fixed puddler that is provided with a vertical setting in agitator motor's the pivot, the stirring rake is the spiral guide piece that the upper end was fixed on the puddler, the fixed pressure disk that supports of a sliding connection on the puddler that is provided with of lower extreme of spiral guide piece, spiral guide piece is the elasticity sheet structure of spiral distribution outside the puddler. The invention has the advantages of avoiding the adhesion of materials to each part in the mixing drum, high mixing efficiency and the like.

Description

Mortar mixer

Technical Field

The invention belongs to the technical field of civil construction equipment, and relates to a mortar stirrer.

Background

Mortar is a cohesive substance used in civil construction, and is prepared by mixing a certain proportion of sand and cementing materials (cement, lime paste, clay and the like) with water, and is also called mortar and also used as mortar. As the mortar, cement mortar, mixed mortar (or cement lime mortar), lime mortar and clay mortar are generally used. The mortar is prepared by weighing various components in proportion and mixing the components by a stirrer.

Most of the existing mortar mixers feed sand and cementing materials (small-diameter aggregate, powder and other solid materials) while adding water until a certain proportion of water and the solid materials are uniformly mixed to form mortar (the solid materials and the water are continuously added according to the proportion when the mortar is continuously prepared); adding solid materials and water into a part of the stirrer at the same time, and uniformly stirring to form mortar; the above two methods have the following disadvantages: firstly, in the initial stage and the middle stage of stirring, the stirring paddle is required to drive non-hydrophilic solid materials (or solid materials with serious and uneven hydrophilicity) to turn over in the stirring cylinder, and a large amount of heat is generated in the process of shearing the solid materials by the stirring paddle, so that a cooling system is required to be arranged on part of the mortar stirrer to maintain the temperature of each part not to be too high; the two stirring modes generate a large amount of heat, and because the resistance for stirring solid materials is large, the stirring speed of the stirring paddle cannot be too high, and the pulping efficiency cannot be too high; a larger gap needs to be reserved between the outline of the stirring paddle and the inner wall of the stirring cylinder, so that the stirring paddle is prevented from being blocked, and the abrasion of the inner wall of the stirring cylinder can be reduced, but part of powder or mortar is adhered to the inner wall of the stirring cylinder, so that the cleaning is difficult, and the secondary use is influenced; and fourthly, the mortar has higher viscosity, particularly the mortar added with the adhesive has higher viscosity, is easy to adhere to the stirring paddle to cause the increase of stirring resistance, and also can remain solidified mortar blocks in the mortar during secondary use due to the unsmooth surface of the stirring paddle to influence the quality of the mortar and the blockage of a discharging part.

If water is filled in the mixing drum firstly, then solid materials such as sand, cement and the like are continuously and slowly fed in, the environment is polluted, the labor cost is high, or the structure is complex, the reliability of the mixer is low, and the pulping and mixing time is difficult to control. Therefore, in order to reduce the labor cost and improve the consistency of mortar, solid materials and water are generally poured into the mortar simultaneously or water is added into the mortar continuously subsequently, so that the operation process can be simplified and the influence of human factors on the stirring effect can be avoided.

Disclosure of Invention

The invention aims to provide a mortar mixer aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to avoid the adhesion of mortar to each part in a mixing drum and improve the pulping efficiency.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a mortar stirrer, its characterized in that, includes frame, churn, stirring rake and agitator motor, agitator motor's casing is fixed in the frame, the churn is fixed in the frame, be provided with pan feeding mouth and discharge gate on the churn, the fixed puddler that is provided with a vertical setting in agitator motor's the pivot, the spiral guide piece on the puddler is fixed for the upper end to the stirring rake, the fixed pressure disk that supports of sliding connection on the puddler that is provided with of lower extreme of spiral guide piece, spiral guide piece is the elasticity lamellar structure of spiral distribution outside the puddler.

Furthermore, the spiral material guiding sheet comprises a pressurizing stirring section and a material scraping section, the pressurizing stirring section is positioned above the material scraping section, and the spiral directions of the pressurizing stirring section and the material scraping section are opposite.

Further, the puddler is the quill shaft, be provided with in the puddler and control the telescopic machanism that supports the pressure dish and slide on the puddler.

Further, telescopic machanism includes a cylinder, the cylinder body of cylinder is fixed in the puddler, the fixed piece of inhaling is provided with a magnetism on the push rod of cylinder, inhale a magnetism sliding connection in the puddler, it makes for the iron material to support the pressure disk.

Furthermore, the magnetic suction block is connected to the push rod of the cylinder in a sliding manner, and a buffer spring is connected between the magnetic suction block and the push rod of the cylinder.

Furthermore, telescopic machanism includes a linear electric motor, linear electric motor's volume casing is fixed in the puddler, fixed one that is provided with on linear electric motor's the push rod inhales the piece, inhale piece sliding connection in the puddler, it makes for the iron material to support the pressure disk.

Furthermore, the magnetic blocks are permanent magnets or electromagnets.

Furthermore, the magnetic suction block is connected to the push rod of the linear motor in a sliding manner, and a buffer spring is connected between the magnetic suction block and the push rod of the linear motor.

Further, the spiral guide sheet is a metal sheet with elasticity.

Furthermore, a resin protective layer is coated on the surface of the spiral material guide sheet.

Pouring the cementing materials such as sand, cement and the like, the raw materials such as water and the like into a mixing drum according to a preparation proportion, slowly rotating the spiral material guiding sheet to match with the raw materials in the process of pouring the raw materials, wherein the lower half part of the mixing drum is made of the solid materials such as sand, cement and the like which form a layer with the water after pouring, and the upper half part is made of the water which is hardly mixed with the solid materials; in order to facilitate the explanation of the working principle of the stirrer, the materials with large water content in the early stage and the middle stage of pulping and positioned on the upper half part of the stirring cylinder are called liquid materials, the materials with small water content in the early stage and the middle stage of pulping or not hydrophilic and positioned on the lower half part of the stirring cylinder are called solid materials, under the condition that the water content difference between the solid materials and the liquid materials is not large, namely the later stage of pulping, the scraping section of the spiral guide piece is positioned at the bottom of the stirring cylinder, all the spiral guide pieces are used for homogenizing multiple mixed materials, and in the homogenizing process, the materials still have the up-and-down opposite flushing.

Along with the continuous rotation of the stirring rod, solid materials such as sand, cement and the like are gradually mixed with water, specifically, the pressurizing stirring section with more circles stirs the upper half of the material with larger water content in the stirring cylinder, so that solid and liquid in the liquid material are uniformly mixed, the liquid material forms larger downward impact force, liquid flow with certain pressure is formed to carry out hedging on the solid material below the liquid material, the solid material at the boundary position of the solid material and the liquid material is upwards rolled up by the material scraping section to be hedging with the liquid material with downward impact force, the solid material is continuously mixed into the liquid material, and homogenization of all the materials is finally completed.

Spiral guide piece is the elastic component, after pouring the raw materials into, because the solid material of bottom is to the support of spiral guide piece lower extreme, spiral guide piece is in the state of compressed, whole spiral guide piece is basically in liquid material, only the superficial layer contact of scraping material section and solid material of spiral guide piece, therefore, the rotatory in-process of puddler, the rotatory resistance of spiral guide piece is less, the continuous liquid material of sneaking into of solid material along with it, spiral guide piece progressively resumes, slurrying earlier stage and middle period, the scraping material section of spiral guide piece can both be better support on the superficial layer of solid material, material up to in the churn does not have obvious layering. Due to the existence of the pressing disc, the rotation of the scraping section cannot be screwed into a deeper position of the solid material, but is in a rotating state on the surface layer of the solid material.

It is difficult to see out that this mixer can reduce the shearing of stirring rake to solid material as far as, compares traditional mixer, and the heat that produces under the equal rotational speed still less, and is lighter to each motion or relative motion's wearing and tearing in the mixer, and the stirring rake outer fringe can be littleer with the gradual interval of churn inner wall, and littleer interval can be better prevent that churn inner wall material from cohering.

In addition, because the spiral guide piece is an elastic piece and deforms after being impacted by the materials, on one hand, the shearing frequency for homogenizing the materials can be increased, on the other hand, the materials can be prevented from being accumulated on the spiral guide piece, and even if the materials are accumulated on the spiral guide piece, the surface of the spiral guide piece can be stripped by controlling the scale deposition after the deformation of the spiral guide piece; the outer wall of the stirring rod is not easy to adhere materials due to the deformation and the expansion of the spiral guide piece.

The position of the lower end of the helical guide piece can be controlled by the telescopic mechanism, thereby controlling the shape of the helical guide piece, namely the helical inclination angle and the coverage area in the mixing drum. The lower end of the spiral guide piece can be controlled to frequently move up and down in the later stage of pulping so that the materials are mixed more uniformly and the situation of forming the lump is reduced. The mixer can be used for producing mortar, as well as building binding materials such as fair-faced concrete without the incorporation of aggregates with large particle size.

Drawings

FIG. 1 is a schematic view of the mortar mixer in the initial stage of mortar making.

FIG. 2 is a schematic structural diagram of the mortar mixer in the later stage of pulping.

FIG. 3 is a sectional view of a stirring rod of the mortar mixer.

In the figure, 1, a frame; 21. a mixing drum; 22. a stirring motor; 23. a feeding port; 24. a discharge port; 25. a stirring rod; 3. a helical guide; 31. pressing the disc; 32. a pressurizing and stirring section; 33. a material scraping section; 4. a telescoping mechanism; 41. a magnetic block; 42. a buffer spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 3, the mortar mixer includes a frame 1, a mixing drum 21, a mixing paddle and a mixing motor 22, a housing of the mixing motor 22 is fixed on the frame 1, the mixing drum 21 is fixed on the frame 1, a feeding port 23 and a discharging port 24 are provided on the mixing drum 21, a vertically arranged mixing rod 25 is fixedly provided on a rotating shaft of the mixing motor 22, the mixing paddle is a spiral guide piece 3 whose upper end is fixed on the mixing rod 25, a pressing disc 31 which is slidably connected on the mixing rod 25 is fixedly provided at the lower end of the spiral guide piece 3, and the spiral guide piece 3 is an elastic sheet structure which is spirally distributed outside the mixing rod 25.

The spiral guide sheet 3 comprises a pressurizing stirring section 32 and a scraping section 33, wherein the pressurizing stirring section 32 is positioned above the scraping section 33, and the spiral directions of the pressurizing stirring section 32 and the scraping section 33 are opposite.

The stirring rod 25 is a hollow shaft, and a telescopic mechanism 4 capable of controlling the pressing disk 31 to slide on the stirring rod 25 is provided in the stirring rod 25.

The telescopic mechanism 4 comprises an air cylinder, the cylinder body of the air cylinder is fixed in the stirring rod 25, a magnetic suction block 41 is fixedly arranged on the push rod of the air cylinder, the magnetic suction block 41 is connected in the stirring rod 25 in a sliding mode, and the abutting-against plate 31 is made of iron materials. The magnetic block 41 is slidably connected to the push rod of the cylinder, and a buffer spring 42 is connected between the magnetic block 41 and the push rod of the cylinder.

As another mode, telescopic machanism 4 includes a linear electric motor, and linear electric motor's volume casing is fixed in puddler 25, and fixed being provided with a magnetism piece 41 on linear electric motor's the push rod, magnetism piece 41 sliding connection is in puddler 25 to the magnetism, and it is made for the iron material to support pressure dish 31. The magnetic block 41 is slidably connected to the push rod of the linear motor, and a buffer spring 42 is connected between the magnetic block 41 and the push rod of the linear motor.

The magnetic block 41 is a permanent magnet or an electromagnet. Spiral guide piece 3 is for having elastic sheetmetal, can also scribble the system resin protection layer on spiral guide piece 3 surface, because spiral guide piece 3 has elasticity, its thickness is less, scribbles and to increase its thickness behind the resin protection layer, improves toughness and elastic restoring force, can also improve the abrasion resistance.

Pouring the cementing materials such as sand, cement and the like, the raw materials such as water and the like into a stirring cylinder 21 according to a preparation ratio, slowly rotating the spiral guide sheet 3 to match with the raw materials in the process of pouring the raw materials, wherein the lower half part of the stirring cylinder 21 is made of the solid materials such as sand, cement and the like, and the upper half part is made of water which is hardly mixed with the solid materials, because the solid materials such as sand, cement and the like form a layer with the water after being poured; in order to facilitate the explanation of the working principle of the mixer, the material with large water content in the early and middle stages of pulping and positioned on the upper half part of the mixing drum 21 is called liquid material, the material with small water content in the early and middle stages of pulping and not hydrophilic and positioned on the lower half part of the mixing drum 21 is called solid material, under the condition that the water content difference between the solid material and the liquid material is not large, namely in the later stage of pulping, the material scraping section 33 of the spiral guide piece 3 is positioned at the bottom of the mixing drum 21, all the spiral guide pieces 3 are used for homogenizing multiple mixed materials, and the up-and-down opposite flushing of the materials still exists in the homogenizing process.

In the initial pulping stage, as shown in fig. 1, and in the later pulping stage, as shown in fig. 2, as the stirring rod 25 continues to rotate, solid materials such as sand, cement and the like are gradually mixed with water, specifically, the pressurizing stirring section 32 with a large number of turns stirs the material with a large water content in the upper half part of the stirring drum 21, so that the liquid materials in the liquid materials are uniformly mixed, and simultaneously, the liquid material forms a large downward impact force to form a liquid flow with a certain pressure to perform counter-flushing on the solid materials below the liquid material, the solid materials at the boundary of the solid materials and the liquid materials are upwards rolled up by the scraping section 33 to be in counter-flushing with the liquid materials with the downward impact force, so that the solid materials are continuously mixed into the liquid materials, and finally, homogenization of all the materials is completed.

Spiral guide piece 3 is the elastic component, after pouring into the raw materials, because the solid material of bottom is to the support of spiral guide piece 3 lower extreme, spiral guide piece 3 is in the state of being compressed, whole spiral guide piece 3 is in liquid material basically, only the scraping section 33 of spiral guide piece 3 contacts with the top layer of solid material, therefore, the rotatory in-process of puddler 25, the rotational resistance of spiral guide piece 3 is less, along with the continuous sneaking into liquid material of solid material, spiral guide piece 3 progressively resumes, slurrying earlier stage and middle period, scraping section 33 of spiral guide piece 3 can both be better support and press on the top layer of solid material, material until in the churn 21 does not have obvious layering. Due to the pressing disc 31, the rotation of the scraping section 33 is not screwed into a deep position of the solid material, but is in a rotating state on the surface of the solid material.

It is difficult to see out that this mixer can reduce the shearing of stirring rake to the solid material as far as, compares traditional mixer, and the heat that produces under the equal rotational speed is still less, and is lighter to the wearing and tearing of each motion or relative motion in the mixer, and the stirring rake outer fringe can be littleer with the gradual interval of churn 21 inner wall, and the interval that is littleer can be better prevents that churn 21 inner wall material from cohering.

In addition, because the spiral guide piece 3 is an elastic piece, the spiral guide piece is deformed after being impacted by materials, on one hand, the shearing frequency for homogenizing the materials can be increased, on the other hand, the materials can be prevented from being accumulated on the spiral guide piece 3, and even if the materials are accumulated on the spiral guide piece 3, the surface of the spiral guide piece 3 can be stripped by controlling the scale deposition after the deformation; the outer wall of the stirring rod 25 is not easy to adhere to materials due to the deformation and the expansion of the spiral guide piece 3.

The position of the lower end of the spiral leader 3 is controlled by the stretching mechanism 4, thereby controlling the shape of the spiral leader 3, i.e., the spiral inclination and the coverage area within the agitating drum 21. The lower end of the spiral guide piece 3 can be controlled to frequently move up and down in the later stage of pulping so as to ensure that the materials are mixed more uniformly and the situation of forming the lump is reduced. The mixer can be used for producing mortar, as well as building binding materials such as fair-faced concrete without the incorporation of aggregates with large particle size.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a mortar stirrer, its characterized in that, includes frame (1), churn (21), stirring rake and agitator motor (22), the casing of agitator motor (22) is fixed in frame (1), churn (21) are fixed in frame (1), be provided with pan feeding mouth (23) and discharge gate (24) on churn (21), fixed puddler (25) that are provided with a vertical setting in the pivot of agitator motor (22), the stirring rake is spiral guide piece (3) that the upper end was fixed on puddler (25), the fixed pressure dish (31) that supports that is provided with a sliding connection on puddler (25) of lower extreme of spiral guide piece (3), spiral guide piece (3) are the outer elasticity sheet structure of spiral distribution in puddler (25).

2. Mortar mixer according to claim 1, wherein the helical vane (3) comprises a pressurized mixing section (32) and a scraping section (33), the pressurized mixing section (32) being located above the scraping section (33), the helical directions of the pressurized mixing section (32) and the scraping section (33) being opposite.

3. Mortar mixer according to claim 2, characterized in that the mixing rod (25) is a hollow shaft, and in that the mixing rod (25) is provided with a telescopic mechanism (4) capable of controlling the sliding of the pressure plate (31) on the mixing rod (25).

4. Mortar mixer according to claim 3, wherein the telescopic mechanism (4) comprises a cylinder, the cylinder body of which is fixed in the mixing rod (25), a magnetic block (41) is fixedly arranged on the push rod of the cylinder, the magnetic block (41) is slidably connected in the mixing rod (25), and the pressing plate (31) is made of ferrous material.

5. Mortar mixer according to claim 4, characterized in that the magnetic block (41) is slidably connected to the push rod of the cylinder, and a buffer spring (42) is connected between the magnetic block (41) and the push rod of the cylinder.

6. A mortar mixer according to claim 3, wherein the telescopic mechanism (4) comprises a linear motor, the housing of which is fixed in the mixing rod (25), a magnetic block (41) is fixedly arranged on the push rod of the linear motor, the magnetic block (41) is slidably connected in the mixing rod (25), and the pressing plate (31) is made of ferrous material.

7. Mortar mixer according to claim 4 or 6, characterized in that the magnet (41) is a permanent magnet or an electromagnet.

8. Mortar mixer according to claim 6, characterized in that the magnet block (41) is slidably connected to the push rod of the linear motor, and a buffer spring (42) is connected between the magnet block (41) and the push rod of the linear motor.

9. Mortar mixer according to claim 1, 2 or 3, characterized in that the helical guide piece (3) is a metal piece with elasticity.

10. Mortar mixer according to claim 9, characterized in that the surface of the helical guide piece (3) is coated with a protective layer of resin.