CN111420590A

CN111420590A - Mine fills multiaxis combined type mixer

Info

Publication number: CN111420590A
Application number: CN202010444232.1A
Authority: CN
Inventors: 张彬; 李锋; 刘顺达; 何文虎
Original assignee: Shandong Chuancheng Environmental Protection Technology Co ltd
Current assignee: Shandong Chuancheng Environmental Protection Technology Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-07-17

Abstract

The invention discloses a mine filling multi-shaft combined mixer which comprises a tank body, a feeding hole and a discharging hole, wherein the feeding hole is formed in the upper part of one side of the tank body, the discharging hole is formed in the lower part of the other side of the tank body, and a first stirring area, a second stirring area and a third stirring area are sequentially arranged on the tank body from one side of the feeding hole to one side of the discharging hole. The upper part of the discharge port is positioned at the inner side of the tank body and is provided with an overflow device. The composite stirrer is wide in adaptability, suitable for most materials such as slurry and paste, free of end leakage, extremely low in equipment maintenance amount, reliable and durable, and good in stirring effect.

Description

Mine fills multiaxis combined type mixer

Technical Field

The invention belongs to the field of processing equipment for mine filling, and particularly relates to a multi-shaft combined type mixer for mine filling.

Background

The mine filling method is characterized in that a goaf is filled with filling materials to support two sides of surrounding rocks, so that the rocks are prevented from moving, and the purpose of controlling ground pressure is achieved. The method of gradually filling the goaf with the filler is called a filling mining method, whenever the stope face advances. The filling mining method aims to utilize a filling body to perform ground pressure management, inhibit surface subsidence and surrounding rock caving, and protect ecological environment balance of a mining site. From the material point of view, the filling mining method can be divided into 3 types, namely a cemented filling method, a water sand filling method and a dry filling method. The dry-filling method is the method which is the earliest applied method of filling mining technology, and dry filling materials such as sand, waste rocks and the like are conveyed to a goaf by other mechanical conveying machines by means of wind power, mine cars or other conveying facilities, so that ores extracted by the method are 1/3 of total ores; the water sand filling method is to transport solid-liquid two-phase slurry such as slag, tailings, broken stones, gravels and the like of a smelting field to the underground by using mortar or a self-flowing mode, and the stability of surrounding rock ore bodies, the size of a stoping roadway and the possibility of surface subsidence are fully considered when the method is applied. The cement filling method is a newly developed filling technology, can form a material into slurry or paste, and conveys the slurry or paste to a filling area by pumping or gravity, and has the advantages of simple process, high filling material strength, high filling speed and high filling quantity.

At present, a vertical stirring barrel or a double-shaft stirrer is generally used for pulping by a cemented filling method, and when stirring equipment is configured for different mine filling projects, the vertical stirring barrel or the double-shaft stirrer is generally selected according to the properties of filling raw materials and the concentration requirement of filling slurry. The rotating speed of the vertical stirring barrel is far higher than that of a double-shaft stirrer, and the stirring efficiency of the vertical stirring barrel is higher than that of the double-shaft stirrer within a certain condition range. However, the structure and the discharging mode of the vertical stirring barrel are not suitable for stirring paste slurry and are also not suitable for pulping, stirring and discharging coarse aggregate. Although the double-shaft stirrer has low stirring efficiency, and the machine body structure is suitable for pulping and discharging of aggregates with higher concentration and coarser aggregate, the problem of slurry leakage at the shaft end of the double-shaft stirrer is always an industrial problem, so that the balance between the vertical stirring barrel and the double-shaft stirrer is difficult to achieve.

Disclosure of Invention

The invention provides a mine filling multi-shaft combined type stirrer, which is suitable for stirring various filling materials, and has high stirring efficiency and strong adaptability.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a mine fills multiaxis combined type mixer, includes a jar body, sets up in the feed inlet on jar body one side upper portion and sets up in the discharge gate of jar body (1) opposite side lower part, from feed inlet one side to discharge gate one side on the jar body set gradually first stirring district, second stirring district and third stirring district.

Preferably, the upper part of the discharge hole is positioned on the inner side of the tank body and provided with an overflow device.

Preferably, the overflow device divides the discharge port into a bottom discharge port and an overflow discharge port.

Preferably, the discharge amount of the overflow discharge port is more than or equal to the feed amount of the feed port, and the feed amount of the feed port is more than or equal to the discharge amount of the bottom discharge port.

Preferably, a bottom plate is installed on the inner side of the bottom of the tank body, and one end, close to the feeding hole, of the bottom plate is higher than one end of the discharging hole.

Preferably, the first stirring area comprises a first stirring motor arranged outside the tank body, and the first stirring motor is connected with a first stirring shaft into the tank body; the second stirring area comprises a second stirring motor arranged on the outer side of the tank body, and the second stirring motor is connected with a second stirring shaft into the tank body; the third stirring area comprises a third stirring motor arranged on the outer side of the tank body, and the third stirring motor is connected with a third stirring shaft in the tank body.

Preferably, the outer side of the first stirring shaft is provided with stirring blades of a three-layer hinge structure which is distributed up and down, the hinge angle is 15 degrees, the stirring blade at the uppermost layer is of a downward pressing structure, and the stirring blades at the lower two layers are of an upward turning structure.

Preferably, two layers of Archimedes curve-shaped stirring blades which are distributed up and down are installed on the outer side of the second stirring shaft, the upper layer of stirring blades are of a downward pressing structure, and the lower layer of stirring blades are of an upward turning structure.

Preferably, the outer side of the third stirring shaft is provided with stirring blades of two layers of spoke type structures which are distributed up and down, the upper layer of stirring blades is of a downward pressing type structure, and the lower layer of stirring blades is of an upward turning type structure.

Preferably, the stirring rotating speed of the first stirring motor is 120r/min, the stirring rotating speed of the second stirring motor is 240r/min, and the stirring rotating speed of the third stirring motor is 340 r/min.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with the conventional horizontal stirrer commonly used in the filling project, the horizontal stirrer completely avoids the industrial problem that slurry is easy to leak from the shaft end of the horizontal stirrer, and can replace the conventional two-stage horizontal stirrer. And the vertical shaft stirring device with high rotating speed can ensure even stirring and full activation, and by using the multi-shaft combined stirrer, the civil engineering and equipment investment is greatly saved, the maintenance is convenient, and the reliability is higher. The multi-shaft combined stirrer can adapt to most filling materials, and is an innovation and progress of a filling stirring form;

2. the material level is constant, and the self-flowing filling system of the stirrer can be controlled simply without adding a material level meter and a pipe clamp valve;

3. the adaptability is wide, and the paste is suitable for most materials such as slurry, paste and the like;

4. reliable and durable low failure rate, no shaft end slurry leakage failure, extremely low equipment maintenance amount and reliability and durability compared with a horizontal mixer.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a perspective view of a multi-axis compound mixer of the present invention;

FIG. 2 is a top perspective view of the multi-axis compound blender of the present invention;

FIG. 3 is an enlarged view of the first mixing shaft of the present invention;

FIG. 4 is a top plan view of a first agitator shaft blade according to the present invention;

FIG. 5 is an enlarged view of the second stirring shaft of the present invention;

FIG. 6 is a top plan view of a second agitator shaft blade according to the present invention;

FIG. 7 is an enlarged view of the third stirring shaft of the present invention;

FIG. 8 is a top plan view of a third agitator shaft blade according to the present invention;

FIG. 9 is a partial view of an overflow arrangement of the present invention;

in the figure: 1. the jar body, 2, feed inlet, 3, discharge gate, 4, first stirring district, 5, second stirring district, 6, third stirring district, 7, overflow arrangement, 8, bottom plate, 31, end discharge gate, 32, overflow discharge gate, 41, first agitator motor, 42, first (mixing) shaft, 51, second agitator motor, 52, second (mixing) shaft, 61, third agitator motor, 62, third (mixing) shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a mine fills multiaxis combined type mixer, includes jar body 1, sets up in feed inlet 2 on jar body 1 one side upper portion and sets up in jar body 1 opposite side lower part discharge gate 3, and jar body 1 is gone up and is set gradually first stirring district 4, second stirring district 5 and third stirring district 6 from feed inlet 2 one side to discharge gate 3 one side.

The agitator tank body can be set to multiple structural shape, and the optimal selection sets up to the cuboid of basic mechanism, and the bottom is semi-circular, and wherein the length of the agitator tank body sets up to three stirring district (first stirring district 4, second stirring district 5, third stirring district 6) and adds

feed inlet

2 and 3 length sums of discharge gate, and the width sets up to the width in a stirring district, and the three stirring district of the cooperation makes the material dwell time maintain 3-3.5 minutes in the jar internal in the agitator tank body 1.

The upper part of the discharge port 3 is positioned at the inner side of the tank body and is provided with an overflow device 7.

The overflow device 7 is a dividing plate tightly attached to the inner side of the tank body, the upper part of the discharge port 3 is divided into two parts, and enough space is reserved between the upper part of the overflow device 7 and the top of the tank body to form an overflow channel.

The overflow device 7 divides the discharge port 3 into a bottom discharge port 31 and an overflow discharge port 32.

After the material stirs through three stirring district, earlier through end discharge gate 31 ejection of compact, the feeding of feed inlet 2 simultaneously, when the input rate of feed inlet 2 was greater than end discharge gate 31's discharge rate, the material liquid level constantly rises from overflow arrangement 7, until reaching the overflow passageway, overflow passageway is crossed to too much material, flows from overflow discharge gate 32.

The discharge amount of the overflow discharge port 32 is more than or equal to the feed amount of the feed port 2, and the feed amount of the feed port 2 is more than or equal to the discharge amount of the bottom discharge port 31.

Suppose that the input speed of feed inlet 2 of mixer is (X) m/h, and end discharge gate 31's load makes it be less than (X) m/h cultivating by calculation type selection, and through a period of time material level can rise gradually like this, when the liquid level rises to the take the altitude and arrives appointed material level (overflow arrangement top), the ground paste will continue the ejection of compact through the overflow passageway on upper portion, makes the liquid level reach the equilibrium through end ejection of compact and overflow ejection of compact. And the maximum discharge amount of the overflow pipe is greater than (X) m and/or h, so that the slurry cannot overflow from the tank body due to insufficient discharge amounts of bottom discharge and overflow discharge.

The bottom plate 8 is installed to 1 bottom inboard of jar body, and bottom plate 8 is higher than 3 one ends of discharge gate near 2 one end of feed inlet. The material inlet end and the material outlet end have certain downward inclination, wherein the downward inclination is about 1 degree.

The first stirring area 4 comprises a first stirring motor 41 arranged outside the tank body 1, and the first stirring motor 41 is connected with a first stirring shaft 42 towards the inside of the tank body; the second stirring area 5 comprises a second stirring motor 51 arranged outside the tank body 1, and the second stirring motor 51 is connected with a second stirring shaft 52 towards the inside of the tank body; the third stirring area 6 comprises a third stirring motor 61 arranged outside the tank body 1, and the third stirring motor 61 is connected with a third stirring shaft 62 towards the inside of the tank body.

The stirring machine adopts multi-shaft vertical stirring and is provided with three groups of stirring motors and stirring shafts. The cantilever type structure is adopted, and three stirring units are uniformly arranged.

Stirring blades of a three-layer hinge structure are arranged on the outer side of the first stirring shaft 42, the hinge angle is 15 degrees, the stirring blade on the uppermost layer is of a downward pressing structure, and the stirring blade on the lower layer is of an upward turning structure. The stirring structure pre-mixes the materials.

Two layers of Archimedes curve-shaped stirring blades are arranged on the outer side of the second stirring shaft 52, the upper layer of stirring blades is of a downward pressing structure, and the lower layer of stirring blades is of an upward turning structure. This stirring structure carries out intensive mixing to the material, for the intensive mixing region.

Stirring blades of two layers of spoke type structures which are distributed up and down are arranged on the outer side of the third stirring shaft 62, the upper layer stirring blades are of a downward pressing type structure, and the lower layer stirring blades are of an upward turning type structure. The agitation zone is a fully activated agitation zone.

The stirrer is divided into three areas of premixing, full stirring and high-speed activation through different blade designs and different rotating speed settings of three groups of stirring areas. The materials are premixed in a hinge mode, then stirred by the spiral Archimedes curve blades of the two shafts, and finally fully activated at high speed by the spoke type blades.

The stirring speed of the first stirring motor 41 is 120r/min, the stirring speed of the second stirring motor 51 is 240r/min, and the stirring speed of the third stirring motor 61 is 340 r/min.

Different stirring speeds are set for matching different stirring paddles and the specific stirring action thereof so as to achieve the purposes of uniform stirring and rapid discharging. And the vortex appears easily in traditional mixer, is unfavorable for the stirring of material, and can form the material and collide each other between the adjacent agitating unit of multiaxis composite mixer, more is favorable to the improvement of stirring effect.

Set up the stirring vane and be less than 50mm apart from the clearance of jar body lateral wall, more be favorable to the stirring and the mixture of material, the stirring vane of more traditional mixer is better apart from the more than 500mm stirring effect of jar body.

Example 1:

according to the invention, three stirring areas are arranged, wherein the first stirring area 4 is of a three-layer hinge type blade structure, the uppermost layer is of a downward pressing type structure, and the stirring blades of the lower two layers are of an upward turning type structure; the second stirring area 5 is provided with two layers of Archimedes curve type stirring blades, the upper layer is of a downward pressing type structure, and the lower layer is of an upward turning type structure; the third stirring area 6 is provided with stirring blades of two-layer spoke type structure, the upper layer stirring blades are of a downward pressing type structure, and the lower layer stirring blades are of an upward turning type structure. The discharge hole is provided with an overflow device 7. The stirring speed of the first stirring shaft 42 is set to be 120r/min, the stirring speed of the second stirring shaft 52 is set to be 240r/min, and the stirring speed of the third stirring shaft 62 is set to be 340 r/min.

Comparative example 1:

the positions of the first stirring section 4 and the second stirring section 5 were changed to maintain the stirring speed, and the same procedure as in example 1 was repeated.

Comparative example 2:

the blades of the first stirring section 4 were changed to two layers, as in example 1.

Comparative example 3:

the blades of the first stirring section 4 were changed to four layers, and the other steps were the same as in example 1.

Comparative example 4:

the stirring was carried out using a conventional vertical single-shaft stirring tank, and the feeding rate was the same as in example 1.

Comparative example 5:

the mixture was stirred using a conventional horizontal twin-shaft stirrer at the same feeding rate as in example 1,

as can be seen from the table above, the multi-shaft combined type stirrer has better stirring effect than the common vertical stirrer and the double-shaft horizontal stirrer. Compared with other comparative examples, the combination of the invention has the best setting effect and the strongest applicability compared with the retention time (stirring efficiency), the uniform mixing degree and the energy consumption.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mine fills multiaxis combined type mixer, includes jar body (1), sets up in feed inlet (2) on jar body (1) one side upper portion and sets up in discharge gate (3) of jar body (1) opposite side lower part, its characterized in that: the tank body (1) is sequentially provided with a first stirring area (4), a second stirring area (5) and a third stirring area (6) from one side of the feed inlet (2) to one side of the discharge outlet (3).

2. The mine filling multi-shaft composite mixer of claim 1, wherein: and the upper part of the discharge port (3) is positioned on the inner side of the tank body and is provided with an overflow device (7).

3. The mine filling multi-shaft composite mixer of claim 2, wherein: the overflow device (7) divides the discharge hole (3) into a bottom discharge hole (31) and an overflow discharge hole (32).

4. The mine filling multi-shaft composite mixer as defined in claim 3, wherein: the discharge amount of the overflow discharge hole (32) is more than or equal to the feed amount of the feed inlet (2), and the feed amount of the feed inlet (2) is more than or equal to the discharge amount of the bottom discharge hole (31).

5. The mine filling multi-shaft composite mixer of claim 1, wherein: bottom plate (8) are installed to jar body (1) bottom inboard, and bottom plate (8) are close to feed inlet (2) one end and are higher than discharge gate (3) one end.

6. The mine filling multi-shaft composite mixer of claim 1, wherein: the first stirring area (4) comprises a first stirring motor (41) arranged on the outer side of the tank body (1), and the first stirring motor (41) is connected with a first stirring shaft (42) towards the inside of the tank body; the second stirring area (5) comprises a second stirring motor (51) arranged on the outer side of the tank body (1), and the second stirring motor (51) is connected with a second stirring shaft (52) towards the interior of the tank body; the third stirring area (6) comprises a third stirring motor (61) arranged on the outer side of the tank body (1), and the third stirring motor (61) is connected with a third stirring shaft (62) towards the tank body.

7. The mine filling multi-shaft composite mixer as defined in claim 6, wherein: stirring vane of three-layer hinge formula structure that distributes about installing in first (mixing) shaft (42) outside, the hinge angle is 15 degrees, and the stirring vane of the superiors is push-down structure, and lower two-layer stirring vane is the formula structure that turns up.

8. The mine filling multi-shaft composite mixer as defined in claim 6, wherein: two layers of Archimedes curve-shaped stirring blades which are distributed up and down are installed on the outer side of the second stirring shaft (52), the upper layer of stirring blades are of a downward pressing structure, and the lower layer of stirring blades are of an upward turning structure.

9. The mine filling multi-shaft composite mixer as defined in claim 6, wherein: and the outer side of the third stirring shaft (62) is provided with stirring blades of two layers of spoke type structures which are distributed up and down, the upper layer of stirring blades are of a downward pressing type structure, and the lower layer of stirring blades are of an upward turning type structure.

10. The mine filling multi-shaft composite mixer as defined in claim 6, wherein: the stirring speed of the first stirring motor (41) is 120r/min, the stirring speed of the second stirring motor (51) is 240r/min, and the stirring speed of the third stirring motor (61) is 340 r/min.