CN115090828B - Sand mixing blade structure of continuous sand mixer - Google Patents
Sand mixing blade structure of continuous sand mixer Download PDFInfo
- Publication number
- CN115090828B CN115090828B CN202210837187.5A CN202210837187A CN115090828B CN 115090828 B CN115090828 B CN 115090828B CN 202210837187 A CN202210837187 A CN 202210837187A CN 115090828 B CN115090828 B CN 115090828B
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- sand
- blade
- blade mounting
- rotating shaft
- circle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
- B22C5/0422—Devices having a fixed receptable with rotating tools, some or all of these tools being rolls or balls loosely mounted on their axis or loose balls in contact with the side wall or the bottom of the receptacle, e.g. with aerating means; "Devices of the Muller type"
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to the technical field of sand casting processing equipment, in particular to a sand mixing blade structure of a continuous sand mixer, which comprises a rotating shaft and a plurality of sand mixing blades, and is characterized in that: the rotating shaft is provided with a plurality of blade mounting holes which are spirally distributed along the axis direction of the rotating shaft; the section of the blade mounting hole is of a calabash-shaped structure; blade mounting holes distributed along the axis direction of the rotating shaft, wherein the angle between the connecting line of the circle centers of a big circle and a small circle and the axis of the rotating shaft is periodically deflected, and adjacent sand mixing blades are reversely arranged; the blade mounting holes are positioned on the spiral lines which are spirally distributed, and the connecting line of the centers of the big circles and the small circles of the blade mounting holes in the same period is the same as the deflection angle of the axis of the rotating shaft. The invention can fully mix the molding sand and the liquid material, avoids the situation of different strength of each part of the sand mold, only needs to mix the sand blade when the abrasion is serious, does not need to replace the whole rotating shaft, and reduces the cost.
Description
Technical Field
The invention relates to the technical field of sand casting processing equipment, in particular to a sand mixing blade structure of a continuous sand mixer.
Background
The continuous sand mixer is a sand mixer capable of continuously feeding and discharging, is an important device for preparing a resin self-hardening sand mould, can realize full and uniform mixing of molding sand, resin, curing agent and other liquid materials, and ensures the strength of the resin self-hardening sand. In the sand mixing process, the sand mixing blade of the sand mixer plays a vital role in sand mixing quality and efficiency. When the sand mixing blade agitates the molding sand, continuous friction occurs between the cutter head and the molding sand, and meanwhile, the cutter head and the molding sand are contacted with liquid materials such as resin, curing agent and the like. Therefore, the bit of the sand mixing blade is required to have good wear resistance and corrosion resistance to ensure the working life thereof.
The rotating shaft of the existing sand mixer is generally designed in two sections, namely a transmission section and a sand mixing section. Wherein the transmission section adopts a traditional helical blade to carry out the transportation and the preliminary stirring of molding sand and liquid material. The sand mixing section is provided with a plurality of sand mixing blades with good wear resistance and corrosion resistance on the rotating shaft, the sand mixing blades are distributed along the axis direction of the rotating shaft, for example, the sand mixing blades between adjacent rows are reversely arranged, namely, are arranged at 90 degrees, and the sand mixing blades adjacent to the rows are reversely arranged, namely, are arranged at 180 degrees. From the perspective of rotation axis tip side, a plurality of sand mixing blade appear crisscross and distribute.
The existing sand mixer can realize full sand mixing to a certain extent and is convenient for replacing the sand mixing blade. But still has drawbacks:
1. the sand mixing blades are distributed towards the same angle, so that partial molding sand is easy to mix unevenly with liquid materials, partial sand is not fully mixed and is removed from a sand outlet, the situation that the strength of each part of the sand mold is different occurs, and when serious, the air permeability of the cross-box or the sand mold is poor, so that the quality of castings is influenced.
2. The upper part of the sand mixing section is severely worn after the sand mixing blade works for a long time, but can be detached and replaced. However, the screw blades of the transfer section are severely worn out, so that only the entire rotation shaft can be replaced, which undoubtedly increases the cost.
Disclosure of Invention
The invention aims to provide a sand mixing blade structure of a continuous sand mixer, which can fully mix molding sand and liquid materials, avoid the condition of different strength of each part of a sand mold, only need the sand mixing blade when the abrasion is serious, and does not need to replace the whole rotating shaft, thereby reducing the cost.
In order to achieve the above purpose, the sand mixing blade structure of the continuous sand mixer comprises a rotating shaft and a plurality of sand mixing blades, wherein the rotating shaft is provided with a plurality of blade mounting holes which are spirally distributed along the axis direction of the rotating shaft; the section of the blade mounting hole is of a gourd-shaped structure, a large circle of the gourd-shaped structure is used for inserting a cutter handle of the sand mixing blade, and a small circle of the gourd-shaped structure is used for inserting a limiting piece which is arranged on sand of the sand mixing blade and used for preventing the blade from rotating; blade mounting holes distributed along the axis direction of the rotating shaft, wherein the angle between the connecting line of the circle centers of a big circle and a small circle and the axis of the rotating shaft is periodically deflected, and adjacent sand mixing blades are reversely arranged; the blade mounting holes are positioned on the spiral lines which are spirally distributed, and the deflection angles of the connecting lines of the circle centers of the big circle and the small circle of each blade mounting hole in the spiral distribution half circle are the same as the deflection angles of the axes of the rotating shafts.
Principle and advantage:
1. the blade mounting holes are spirally distributed along the axis direction of the rotating shaft, so that the plurality of blade mounting holes reach the action of the spiral blades in the existing sand mixer, molding sand and liquid materials can be fully mixed, and when the abrasion is serious, only the sand mixing blades are needed, the whole rotating shaft is not required to be replaced, and the cost is reduced.
2. The angle of each blade mounting hole along rotation axis direction distribution, the setting of periodic deflection to and be located the blade mounting hole on the spiral line of spiral distribution, and the same setting of deflection angle of each blade mounting hole in spiral distribution half week realizes that the sand mixing blade distributes along different angles, in order to reach the purpose that promotes the sand mixing homogeneity, avoids appearing the condition that each position intensity of sand mould is different, makes molding sand and liquid material more thoroughly mix.
Further, eight blade mounting holes which are spirally distributed on the same spiral line for one circle are arranged; the angle between the connecting line of the circle centers of the big circle and the small circle of the blade mounting hole distributed along the axis direction of the rotating shaft and the axial direction of the sand mixing shaft is 0 degree, 15 degree, 45 degree and 90 degree respectively, and periodic circular deflection is carried out.
Further, the axial distance between the two blade mounting holes of the axis of the rotating shaft is 10-20mm.
The distribution density of the blade mounting holes is convenient to adjust, so that the sand mixing blades are distributed along different angles. And further, the molding sand and the liquid material are more fully mixed or are convenient to install and maintain.
Further, the width of the cutter head of the sand mixing blade is 30mm, the thickness of the cutter head is 10mm, the diameter of the large circle of the cutter handle is 15mm, and the length of the cutter head is 20mm.
The molding sand and the liquid material are more fully mixed, and the installation and the maintenance are convenient.
Further, the material of the cutter head of the sand mixing blade is tungsten carbide wear-resistant alloy, and the material of the cutter handle is 35CrMoNi.
Has good wear resistance and corrosion resistance to ensure the service life.
Further, the small circle diameter is 6mm. The processing of the sand mixing blade is convenient, and the structural stability of the sand mixing blade is ensured.
Drawings
FIG. 1 is an isometric view of a rotating shaft according to an embodiment of the present invention;
FIG. 2 is a front view of a sand mixing blade according to an embodiment of the present invention;
FIG. 3 is a schematic view of the sand mixing blade of FIG. 2 in three directions ABC;
fig. 4 is a schematic view of a deflection arrangement of blade mounting holes distributed along the axis of the rotating shaft in fig. 1.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the device comprises a rotating shaft 1, a blade mounting hole No. 2, a blade mounting hole No. 3, a blade mounting hole No. 4, a blade mounting hole No. 5, a blade mounting hole No. 6, a blade mounting hole No. 7, a blade mounting hole No. 8, a blade mounting hole No. 7, a blade mounting hole No. 9, a sand mixing blade 10, a thread section 11 and a limiting piece 12.
Examples
A sand mixing blade structure of a continuous sand mixer, which is basically as shown in figures 1-4: the novel sand mixing device comprises a rotating shaft 1 and a plurality of sand mixing blades 10, wherein a plurality of blade mounting holes which are spirally distributed along the axis direction of the rotating shaft 1 are formed in the rotating shaft 1, the structure of the novel sand mixing device is similar to that of a spiral blade, and according to the structure of the spiral blade, two spiral lines which are mutually wound and are not interfered with each other are known, and the novel sand mixing device is similar to a DNA double spiral. Eight blade mounting holes which are spirally distributed on one spiral line for one circle are arranged, and the eight blade mounting holes are in a through hole shape due to the two spiral lines.
As shown in fig. 1, the blade mounting holes on one spiral line are respectively a No. 1 blade mounting hole 2, a No. 2 blade mounting hole 3, a No. 3 blade mounting hole, a No. 4 blade mounting hole, a No. 5 blade mounting hole, a No. 6 blade mounting hole, a No. 7 blade mounting hole 9 and a No. 8 blade mounting hole 8.
The blade mounting holes on the other spiral line are respectively a first blade mounting hole, a second blade mounting hole, a third blade mounting hole 7, a fourth blade mounting hole 6, a fifth blade mounting hole 5, a sixth blade mounting hole 4, a seventh blade mounting hole and a eighth blade mounting hole. The number 1 blade mounting holes 2 are communicated with the number one blade mounting holes to form through holes penetrating through the axis of the rotating shaft 1, the rest blade mounting holes are identical, and deflection angles between adjacent blade mounting holes are 45 degrees and are uniformly divided into eight equal parts when seen from the end face of the rotating shaft 1.
The cross-sectional shape of blade mounting hole is calabash-shaped structure, the great circle of calabash-shaped structure is used for the hilt of sand mixing blade 10 to insert, the little circle of calabash-shaped structure is used for the sand mixing blade 10 to set up and prevents that blade pivoted locating part 12 from inserting.
As shown in fig. 4, the blade mounting holes distributed along the axial direction of the rotating shaft 1 are periodically deflected by the angle between the connecting line of the centers of the large circle and the small circle and the axial line of the rotating shaft 1, and the adjacent sand mixing blades 10 are reversely arranged (i.e. are turned 180 °), for example, in fig. 1, the sand mixing blades 10 of the blade mounting hole No. 12 are upward in the cutter head, and the blade mounting hole No. 5 is penetrated out by the cutter handle. In this embodiment, as shown in fig. 4, the connecting lines of the centers of the large circles and the small circles of the blade mounting holes distributed along the axis direction of the rotating shaft and the axial direction of the sand mixing shaft form angles of 0 °, 15 °, 45 °, and 90 ° respectively, so as to perform periodic cyclic deflection; for example, insert mounting hole No. 1, 2 is 0, then immediately adjacent insert mounting hole No. 5 is 15. In other embodiments, the center of the big circle and the center of the small circle of the blade mounting hole are connected, and the axial direction of the blade mounting hole and the axial direction of the sand mixing shaft can be respectively 0 degree, 45 degrees, 60 degrees and 90 degrees, and the directions of the blade mounting hole and the small circle are freely adjustable.
The blade mounting holes are positioned on the spiral lines which are spirally distributed, and the circle center connecting lines of the big circles and the small circles of the blade mounting holes in the half circumferences which are spirally distributed are the same as the deflection angle of the axis of the rotating shaft 1. As shown in fig. 1, the deflection angle of the blade mounting hole No. 12 is 0 °, and then the deflection angles of the blade mounting holes No. 1, 3, and 4 in the spiral distribution half cycle are all the same and are all 0 °; the deflection angles of the first blade mounting hole, the second blade mounting hole, the third blade mounting hole 7 and the fourth blade mounting hole 6 on the other spiral line are all the same, and are all 0 degrees. The deflection angles of the No. 5 blade mounting hole, the No. 6 blade mounting hole, the No. 7 blade mounting hole 9 and the No. 8 blade mounting hole 8 are all the same and are all 15 degrees, so that the No. 5 blade mounting hole, the No. 4 blade mounting hole, the No. seven blade mounting hole and the No. eight blade mounting hole are also 15 degrees. The angles between the connecting line of the circle centers of the big circle and the small circle of the blade mounting holes distributed along the axis direction of the rotating shaft and the axial direction of the sand mixing shaft are respectively 0 degree, 15 degree, 45 degree and 90 degree, and periodic circular deflection is carried out.
The installation of the sand mixing blades 10 on the blade mounting holes on the spiral line adopts interval arrangement, for example, in fig. 1, the cutter heads of the sand mixing blades 10 of the six-blade mounting hole 4 and the four-blade mounting hole 6 face upwards, and the cutter handles of the sand mixing blades 10 are penetrated out by the five-blade mounting hole 5.
As shown in fig. 1 and 4, the axial distance between the two blade mounting holes on the axis of the rotary shaft 1 is 10-20mm. This example uses 15mm.
As shown in fig. 2 and 3, the cutter head of the sand mixing blade 10 is made of tungsten carbide wear-resistant alloy, and the cutter handle is made of 35crMoni. The width of the cutter head of the sand mixing blade 10 is 30mm, the thickness of the cutter head is 10mm, the diameter of the large circle of the cutter handle is 15mm, and the length of the cutter head is 20mm. The small circle diameter is 6mm, and the size structure of the limiting piece 12 is set according to the small circle diameter. Screw thread sections 11 are arranged at the front end and the rear end of the handle of the sand mixing blade 10, a nut is sleeved at the front end of the handle of the sand mixing blade 10, and a nut is used at the rear end of the handle of the sand mixing blade. The sand mixing blade 10 is fastened to the rotary shaft 1 by a nut and a nut pressing clip.
The specific implementation process is as follows:
the sand mixing blades 10 are arranged at intervals along the blade mounting holes distributed along the axial direction of the rotating shaft 1, and meanwhile, the sand mixing blades 10 are also arranged at intervals on the blade mounting holes on the spiral line. The sand mixing blades 10 can reach the functions of the sand mixing blades 10 and the spiral blades in the existing sand mixer, so that the molding sand and the liquid materials can be fully mixed, and when the abrasion is serious, only the sand mixing blades 10 are needed, the whole rotating shaft 1 is not needed to be replaced, and the cost is reduced.
The angle of each blade mounting hole that distributes along rotation axis 1 axis direction, the setting of periodic deflection to and be located the blade mounting hole on the spiral line of spiral distribution, and the same setting of deflection angle of each blade mounting hole in spiral distribution half week realizes that the sand mixing blade 10 distributes along different angles, in order to reach the purpose that promotes the sand mixing homogeneity, avoids appearing the condition that each position intensity of sand mould is different, makes molding sand and liquid material more thoroughly mix. And each single piece can be replaced independently without replacing the whole rotating shaft, so that the cost is reduced.
The foregoing is merely exemplary of the present invention, and the specific structures and features well known in the art will be described in detail herein, so that those skilled in the art will be able to ascertain the general knowledge of the state of the art, including the application date or the priority date, and to ascertain the general knowledge of the state of the art, without the ability to apply the general experimental means before that date, so that those skilled in the art, with the benefit of this disclosure, may make various modifications of the present invention with the ability to work itself, without the ability to work out the present invention, as such typical structures or methods would be considered to be an obstacle for those skilled in the art to practice the present invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. The utility model provides a sand mixing blade structure of continuous sand mixer, includes rotation axis and a plurality of sand mixing blade, its characterized in that: the rotating shaft is provided with a plurality of blade mounting holes which are spirally distributed along the axis direction of the rotating shaft; the section of the blade mounting hole is of a gourd-shaped structure, a large circle of the gourd-shaped structure is used for inserting a cutter handle of the sand mixing blade, and a small circle of the gourd-shaped structure is used for inserting a limiting piece which is arranged on sand of the sand mixing blade and used for preventing the blade from rotating; blade mounting holes distributed along the axis direction of the rotating shaft, wherein the angle between the connecting line of the circle centers of a big circle and a small circle and the axis of the rotating shaft is periodically deflected, and adjacent sand mixing blades are reversely arranged; the blade mounting holes are positioned on the spiral lines which are spirally distributed, and the deflection angles of the connecting lines of the circle centers of the big circle and the small circle of each blade mounting hole in the spiral distribution half circle are the same as the deflection angles of the axes of the rotating shafts.
2. The sand mixing blade structure of a continuous sand mixer according to claim 1, characterized in that: eight blade mounting holes which are spirally distributed on the same spiral line for one circle are arranged; the angle between the connecting line of the circle centers of the big circle and the small circle of the blade mounting hole distributed along the axis direction of the rotating shaft and the axial direction of the sand mixing shaft is 0 degree, 15 degree, 45 degree and 90 degree respectively, and periodic circular deflection is carried out.
3. The sand mixing blade structure of a continuous sand mixer according to claim 1, characterized in that: the axial distance between the two blade mounting holes of the axis of the rotating shaft is 10-20mm.
4. The sand mixing blade structure of a continuous sand mixer according to claim 1, characterized in that: the width of the cutter head of the sand mixing blade is 30mm, the thickness of the cutter head is 10mm, the diameter of the large circle of the cutter handle is 15mm, and the length of the cutter head is 20mm.
5. The sand mixing blade structure of a continuous sand mixer according to claim 1, characterized in that: the material of the cutter head of the sand mixing blade is tungsten carbide wear-resistant alloy, and the material of the cutter handle is 35CrMoNi.
6. The sand mixing blade structure of a continuous sand mixer according to claim 1, characterized in that: the diameter of the small circle is 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210837187.5A CN115090828B (en) | 2022-07-15 | 2022-07-15 | Sand mixing blade structure of continuous sand mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210837187.5A CN115090828B (en) | 2022-07-15 | 2022-07-15 | Sand mixing blade structure of continuous sand mixer |
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| CN115090828A CN115090828A (en) | 2022-09-23 |
| CN115090828B true CN115090828B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210837187.5A Active CN115090828B (en) | 2022-07-15 | 2022-07-15 | Sand mixing blade structure of continuous sand mixer |
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| CN109808063A (en) * | 2019-03-18 | 2019-05-28 | 青岛筑华环保科技有限公司 | It is a kind of spirally to have the stirring blade that material ability is continuously conveyed |
| CN213002469U (en) * | 2020-08-21 | 2021-04-20 | 济南柳玉鑫机械设备有限公司 | Sand mixer |
| CN214801988U (en) * | 2021-04-09 | 2021-11-23 | 刘朋立 | Mixing shaft and mixing mechanism of full-automatic noodle rolling equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10906047B2 (en) * | 2017-10-27 | 2021-02-02 | Eteros Technologies Inc. | Helical-bladed cutting reel |
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| CN201442073U (en) * | 2008-12-12 | 2010-04-28 | 无锡锡南铸造机械有限公司 | Sand mixer stirring tool |
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| CN203390153U (en) * | 2013-07-23 | 2014-01-15 | 双星漯河中原机械有限公司 | Continuous sand mill main shaft |
| CN104646616A (en) * | 2013-11-19 | 2015-05-27 | 无锡市康晖机械制造有限公司 | Rotating shaft of sand mixing cage |
| CN105409483A (en) * | 2015-12-08 | 2016-03-23 | 安徽茂盛自动化设备有限公司 | Square bundle baler and crushing free-swinging knife mechanism thereof |
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| CN115090828A (en) | 2022-09-23 |
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