CN210450818U - Split type tectorial membrane sand roller mill - Google Patents

Abstract

The utility model discloses a split type precoated sand mixer, which comprises a shell, a bracket and a stirring mechanism, wherein the shell is fixed on the bracket positioned outside, and the stirring mechanism is arranged at the bottom of the shell; the cover body is provided with a sand inlet and an auxiliary material port, the auxiliary material port is positioned on the central shaft of the cover body, and the sand inlet is positioned on the outer side of the auxiliary material port; the cover body is provided with a plurality of sand inlets which are uniformly distributed in the circumferential direction of the auxiliary material port; the lower part of the cover body is also provided with a guide plate which is fixed at the edge of the cover body. The precoated sand produced by the split type precoated sand mixer of the utility model has higher surface consistency and good quality of finished precoated sand; the cover body of the split type precoated sand mixer is detachably arranged on the sand mixer, so that the use and maintenance are convenient.

Description

Split type tectorial membrane sand roller mill

Technical Field

The utility model relates to a tectorial membrane sand production facility technical field, especially a split type tectorial membrane sand roller mill.

Background

In the production process of the hot-method precoated sand, according to the requirement of a client on the performance of the precoated sand, the primary sand is heated and then mixed with different auxiliary materials in a sand mixer, so that the auxiliary materials form a layer of inclusion on the surface of the primary sand, and the precoated sand is convenient to mold subsequently and is used for casting steel and the like. Most of the existing sand mixers are not uniformly stirred, so that the product quality of the coated sand is directly reduced, and the defective rate of castings in the casting process is increased dramatically.

The Chinese patent application with the publication number of CN105268912A discloses a precoated sand mixer, wherein an air outlet, a resin inlet, a curing agent inlet and a sand inlet are arranged at the top of a sand cylinder of the mixer, a rotor reducer is arranged in the mixer, and a baffle is arranged above the rotor reducer. In the production process, when the raw sand is added into the sand mixer through the sand inlet, as the raw sand is solid, in order to uniformly disperse the raw sand at the bottom of the sand mixer, overlong stirring time is usually required. Otherwise, after the auxiliary materials are added, because the raw sand is accumulated and is difficult to form uniform inclusion bodies on the surfaces of the sand grains, the consistency of the precoated sand is poor, and the quality of the product is influenced. And because the baffle is arranged above the rotor reducer, the auxiliary material is easy to drop on the baffle when being added, thereby reducing the adding amount of the auxiliary material and ensuring that the finished precoated sand can not meet the designed performance requirement.

Therefore, the applicant provides the sand mixer capable of realizing uniform feeding, the raw sand is convenient to disperse quickly, no shielding object is arranged in the sand mixer, the raw sand and the auxiliary materials are completely mixed according to the designed addition amount, the surface consistency of the produced precoated sand is high, and the quality of the finished product precoated sand is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a split type tectorial membrane sand roller mill, through setting up a plurality of sand inlets and guide plate on the roller mill, can make tectorial membrane sand disperse evenly in the roller mill fast, and raw sand and auxiliary material mix according to the addition of design completely, the tectorial membrane sand surface uniformity that a split type tectorial membrane sand roller mill produced is higher, the quality of finished product tectorial membrane sand is good; simultaneously, the detachable installation of lid, convenient to use and maintenance.

The utility model discloses a split type tectorial membrane sand roller mill, including casing, support and rabbling mechanism, the casing is fixed on the support that is located the outside, the rabbling mechanism is located the bottom of casing, its characterized in that is equipped with the lid in the upper end of casing, the detachable installation of lid is in the upper end of casing; the cover body is provided with a sand inlet and an auxiliary material port, the auxiliary material port is positioned on the central shaft of the cover body, and the sand inlet is positioned on the outer side of the auxiliary material port; the cover body is provided with a plurality of sand inlets which are uniformly distributed in the circumferential direction of the auxiliary material port; the lower part of the cover body is also provided with a guide plate which is fixed at the edge of the cover body.

Preferably, the number of the sand inlets is 3.

Preferably, the guide plate is of an inverted cone plate structure, and the upper end of the guide plate is fixed at the edge of the cover body.

Preferably, the stirring mechanism comprises a plurality of stirring blades, a stirring shaft and a stirring motor, the stirring mechanism is provided with the plurality of stirring blades, the stirring blades are fixed on the stirring shaft, and the stirring shaft is positioned on the central axis of the shell and fixed at the bottom of the shell; the stirring shaft with agitator motor fixed connection, agitator motor is fixed to be set up the outside of casing, stirring vane can be rotatory around the center pin of casing in the inside of casing under agitator motor's effect.

Furthermore, the upper surface of the stirring blade is arc-shaped in the circumferential direction, and the concave surface of the arc-shaped is consistent with the rotating direction of the stirring blade; the upper surface and the lower surface of the stirring blade form a certain included angle in the radial direction, so that the stirring blade is low inside and high outside in the radial direction.

Preferably, the bottom of the cover body is provided with a sand baffle which is of a conical structure, the upper end of the sand baffle is fixed on the outer side of the auxiliary material port, and a sand inlet channel is formed between the sand baffle and the guide plate.

Preferably, the upper end of the stirring shaft is provided with a dispersing sheet, and the upper surface of the dispersing sheet is provided with petal patterns.

Preferably, a layer of wear plates is provided on the side walls of the housing.

Further, the surface of the wear-resisting plate is coated with wear-resisting material tungsten carbide.

The working principle of the utility model is as follows:

after raw sand is heated, a sand inlet channel is formed between the sand inlet, the sand blocking plate and the guide plate, the raw sand is scattered to the bottom of the shell from multiple directions, the raw sand is uniformly dispersed in the shell under the action of the stirring mechanism, after the stirring is continued for a period of time, auxiliary materials such as resin, curing agent and the like are sequentially added from the auxiliary material ports according to the procedure of adding the auxiliary materials, when the auxiliary materials fall on the stirring shaft, the auxiliary materials are scattered to all directions of the bottom of the shell after contacting petal grains on the surface of the dispersible tablet and are uniformly dispersed into the raw sand, so that the outer surface of the raw sand forms a uniform inclusion, and the stirring time can be saved. After the sand mixer is used for a period of time, the cover body can be detached from the shell, the damage condition inside the shell is checked, and the wear-resisting plate on the side wall of the shell is replaced in time.

The utility model relates to a split type tectorial membrane sand roller mill compares with prior art and has following advantage:

(1) the split precoated sand mixer is provided with the plurality of sand inlets and the guide plates, so that the precoated sand can be rapidly and uniformly dispersed in the mixer, and the raw sand and the auxiliary materials are completely mixed according to the designed addition amount;

(2) the cover body of the split type precoated sand mixer is detachably arranged on the sand mixer, so that the use and maintenance are convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of a split type precoated sand mixer of the present invention;

FIG. 2 is a quarter sectional view of a split type precoated sand mixer of the present invention;

FIG. 3 is a sectional view of the split type precoated sand mixer of the present invention;

FIG. 4 is a schematic structural view of the stirring blade of the present invention;

reference numerals:

1. a housing; 11. a sand inlet; 12. an auxiliary material port; 13. a wear plate; 14. a cover body; 15. a sand baffle plate; 16. a baffle;

2. a support;

3. a stirring mechanism; 31. a stirring blade; 32. a stirring shaft; 33. a stirring motor.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 4, the utility model relates to a split type tectorial membrane sand roller mill, including casing 1, casing 1 is fixed on being located outside support 2 the upper end of casing 1 is equipped with lid 14, lid 14 detachable installs the upper end of casing 1 is convenient for maintain and safeguard the roller mill. Be equipped with into sand mouth 11 and auxiliary material mouth 12 on the lid 14, auxiliary material mouth 12 is located on the center pin of lid 14, it is located to advance sand mouth 12 the outside of auxiliary material mouth 12. In order to avoid accumulation of raw sand when the raw sand enters the casing from the sand inlet 11, the raw sand cannot be uniformly dispersed at the bottom of the casing 1 in a short time, the cover body 14 is provided with a plurality of sand inlets 12, preferably, the cover body 14 is provided with 3 sand inlets 12, and the 3 sand inlets 12 are uniformly distributed in the circumferential direction of the auxiliary material port 12. When sand is added into the sand mixer through the sand inlet 12, sand can enter the shell 1 from the sand inlets 11, so that raw sand can be rapidly and uniformly dispersed at the bottom of the shell, and the dispersion time is shortened. In order to better control the direction of entering the shell 1 when adding the raw sand, a guide plate 16 is further arranged at the lower part of the cover body 14, the guide plate 16 is of an inverted cone-shaped plate structure, and the upper end of the guide plate 16 is fixed at the edge of the cover body 14.

The bottom of casing 1 still is equipped with a rabbling mechanism 3, because former sand is the solid, and most former sand is close to the bottom motion of casing 1 under the effect of rabbling mechanism 3, in order to make former sand raise the take the altitude in casing 1, the stirring of the former sand of being convenient for set up a plurality of stirring vane 31 on the rabbling mechanism 3, stirring vane 31 is fixed on the (mixing) shaft 32, the (mixing) shaft 32 is located on the central axis of casing 1, and fix the bottom of casing 1. The stirring shaft 32 is fixedly connected with the stirring motor 33, the stirring motor 33 is fixedly arranged outside the shell 1, and the stirring blade 31 can rotate around the central shaft of the shell 1 in the shell 1 under the action of the stirring motor 33.

The upper surface of the stirring blade 31 is arc-shaped in the circumferential direction, the arc-shaped concave surface is consistent with the rotation direction of the stirring blade 31, when the stirring blade 31 rotates in the shell 1, the arc-shaped concave surface of the impeller can be fully contacted with more raw sand, and after the sand grains at the bottom of the shell 1 are scooped up, more sand grains deposited at the bottom of the shell 1 are driven to move. When the raw sand rotates along with the stirring blades 31 in the shell 1, sand grains near the center of the bottom of the shell 1 are accumulated near the side wall of the shell 1 under the action of centrifugal force to form sand blocks, and after auxiliary materials are added, uniform inclusions are difficult to form on the surfaces of part of the sand grains. In order to further improve the uniformity of the distribution of the sand grains in the casing 1, the upper surface and the lower surface of the stirring blade 31 form a certain included angle in the radial direction, so that the stirring blade 31 is low inside and high outside in the radial direction. When the sand particles rotate under the action of the stirring blade 31, the sand particles move along the radial direction of the stirring blade 31 under the action of centrifugal force, and the stirring blade 31 is low inside and high outside, so that the sand particles can be prevented from being accumulated near the side wall of the shell 1 in the stirring process, and the sand particles in the shell 1 are ensured to be uniformly distributed.

In order to improve the stirring efficiency, the stirring speed of the stirring mechanism 3 is usually high, and the raw sand with a small part of mesh number in the shell 1 is raised too high in the stirring process, so that the inclusion is not formed, and the quality of the precoated sand is affected. Therefore, a sand baffle 15 is arranged at the bottom of the cover body 14, the sand baffle 15 is in a conical structure, the upper end of the sand baffle 15 is fixed at the outer side of the auxiliary material port 12, and a sand inlet channel is formed between the sand baffle 15 and the guide plate 16. When raw sand enters the shell 1 from the sand inlet 11, the raw sand can be dispersed to the bottom of the shell 1 through the sand inlet channel; when the former sand that is kicked up touches sand baffle 15 in casing 1, the former sand that is kicked up takes place to subside in casing 1, and then continues to mix with the auxiliary material to guarantee that the former sand in casing 1 all forms the inclusion at the surface outward.

As a further proposal of the utility model, the auxiliary material and the raw sand can be rapidly mixed uniformly, the upper end of the stirring shaft 32 is provided with a dispersible tablet, and the upper surface of the dispersible tablet is petal patterns. When the auxiliary materials are added from the auxiliary material port 12, the auxiliary materials fall into the dispersing pieces from the auxiliary material port 12, and under the rotating action of the stirring shaft 32, the auxiliary materials are dispersed into the raw sand after being scattered by the dispersing pieces, so that the uniform dispersion of the auxiliary materials is realized.

The discovery in the production process, because the quick rotation of the interior sand grain of casing 1, the lateral wall of casing 1 very easily takes place wearing and tearing under the scraping effect of sand grain, for the wearability that improves casing 1, is equipped with one deck antifriction plate 13 on the lateral wall of casing 1, antifriction plate 13 surface coating wear-resisting materials such as tungsten carbide, antifriction plate 13 detachable sets up on the inner wall of casing 1, after using a period, can change antifriction plate 13, improves the life of roller mill.

The working principle of the utility model is as follows:

after raw sand is heated, a sand inlet channel is formed between the sand inlet 11, the sand blocking plate 15 and the guide plate 16, the raw sand is scattered to the bottom of the shell 1 from multiple directions, at the moment, the raw sand is uniformly dispersed in the shell 1 under the action of the stirring mechanism 3, after the stirring is continued for a period of time, auxiliary materials such as resin, curing agent and the like are sequentially added from the auxiliary material port 12 according to the procedure of adding the auxiliary materials, when the auxiliary materials fall on the stirring shaft 32, the auxiliary materials are scattered to all directions of the bottom of the shell 1 after contacting with petal patterns on the surface of the dispersible tablets, and are uniformly dispersed into the raw sand, so that the outer surface of the raw sand forms uniform inclusion, and the stirring time can be saved. After the mixer has been in use for a period of time, the cover 14 can be removed from the housing 1, the interior of the housing 1 checked for damage, and the wear plates 13 on the side walls of the housing 1 replaced in time.

The utility model discloses a split type tectorial membrane sand roller mill not only can make tectorial membrane sand disperse evenly in the roller mill fast, and former sand and auxiliary material mix according to the addition volume of design completely, and the tectorial membrane sand surface uniformity that a split type tectorial membrane sand roller mill produced is higher, and the quality of finished product tectorial membrane sand is good; meanwhile, the cover body of the split type precoated sand mixer is detachably arranged on the sand mixer, so that the use and maintenance are convenient.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (9)

1. A split type precoated sand mixer comprises a shell, a bracket and a stirring mechanism, wherein the shell is fixed on the bracket positioned outside, and the stirring mechanism is arranged at the bottom of the shell; the cover body is provided with a sand inlet and an auxiliary material port, the auxiliary material port is positioned on the central shaft of the cover body, and the sand inlet is positioned on the outer side of the auxiliary material port; the cover body is provided with a plurality of sand inlets which are uniformly distributed in the circumferential direction of the auxiliary material port; the lower part of the cover body is also provided with a guide plate which is fixed at the edge of the cover body.

2. A split precoated sand mixer according to claim 1, wherein the number of sand inlets is 3.

3. A split type precoated sand mixer according to claim 1, wherein the guide plate is of an inverted conical plate structure, and the upper end of the guide plate is fixed on the edge of the cover body.

4. The split type precoated sand mixer according to claim 1, wherein the stirring mechanism comprises a plurality of stirring blades, a stirring shaft and a stirring motor, the stirring blades are arranged on the stirring mechanism and fixed on the stirring shaft, and the stirring shaft is positioned on the central axis of the shell and fixed at the bottom of the shell; the stirring shaft with agitator motor fixed connection, agitator motor is fixed to be set up the outside of casing, stirring vane can be rotatory around the center pin of casing in the inside of casing under agitator motor's effect.

5. A split type precoated sand mixer according to claim 4, wherein the upper surface of the stirring blade is arc-shaped in the circumferential direction, and the concave surface of the arc is consistent with the rotating direction of the stirring blade; the upper surface and the lower surface of the stirring blade form a certain included angle in the radial direction, so that the stirring blade is low inside and high outside in the radial direction.

6. The split type precoated sand mixer according to claim 1, wherein a sand baffle is arranged at the bottom of the cover body, the sand baffle is in a conical structure, the upper end of the sand baffle is fixed outside the auxiliary material port, and a sand inlet channel is formed between the sand baffle and the guide plate.

7. The split type sand-muller for the precoated sand as claimed in claim 5, wherein the upper end of the stirring shaft is provided with dispersing pieces, and the upper surfaces of the dispersing pieces are petal patterns.

8. A split coated sand mixer as claimed in claim 1 wherein a wear plate is provided on the side wall of the housing.

9. A split coated sand mixer as claimed in claim 8, wherein the wear plate surface is coated with a wear resistant material tungsten carbide.

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