CN115090828A - Sand mixing blade structure of continuous sand mixer - Google Patents
Sand mixing blade structure of continuous sand mixer Download PDFInfo
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- CN115090828A CN115090828A CN202210837187.5A CN202210837187A CN115090828A CN 115090828 A CN115090828 A CN 115090828A CN 202210837187 A CN202210837187 A CN 202210837187A CN 115090828 A CN115090828 A CN 115090828A
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- sand
- blade
- blade mounting
- rotating shaft
- circle
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
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 cross section of the blade mounting hole is of a gourd-shaped structure; the blade mounting holes are distributed along the axial direction of the rotating shaft, the angle between the connecting line of the circle centers of the large circle and the small circle and the axial line of the rotating shaft is periodically deflected, and the adjacent sand mulling blades are arranged in the reverse direction; the blade mounting holes are positioned on the spiral lines which are distributed spirally, and the deflection angles of the connecting line of the circle centers of the large circle and the small circle of each blade mounting hole in the same period and the axis of the rotating shaft are the same. The invention can fully mix the molding sand and the liquid material, avoids the condition that the strength of each part of the sand mold is different, only needs the sand mixing 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 important equipment for preparing the resin self-hardening sand mold, can realize the sufficient 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 mulling process, the sand mulling blade of the sand mulling machine plays a vital role in the sand mulling quality and efficiency. When the sand mixing blade stirs the molding sand, continuous friction occurs between the tool bit and the molding sand, and meanwhile, the tool bit can contact liquid materials such as resin, curing agent and the like. Therefore, the tips of the blades are required to have good wear resistance and corrosion resistance to ensure their working life.
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 traditional helical blade to carry out the transportation and the preliminary mixing of molding sand and liquid material. And a plurality of sand mixing blades with good wear resistance and corrosion resistance are arranged on the rotating shaft on the sand mixing section, and the sand mixing blades are distributed along the axial direction of the rotating shaft in an arrangement mode, for example, the sand mixing blades between adjacent rows are arranged in a reverse direction, namely 90 degrees, and the adjacent sand mixing blades on the same row are arranged in a reverse direction, namely 180 degrees. From the angle of the side surface of the end part of the rotating shaft, a plurality of sand mixing blades are distributed in a cross shape.
The prior sand mixer can realize sufficient sand mixing to a certain extent and is convenient for replacing the sand mixing blade. But still has the following defects:
the sand mixing blades are distributed towards the same angle, partial sand and liquid materials are easily mixed unevenly, partial sand is not fully mixed and is removed from a sand outlet, the strength of each part of a sand mold is different, and in severe cases, the sand mold is crossed, or the air permeability of the sand mold is poor, so that the quality of castings is influenced.
And secondly, after the sand mulling blade on the sand mulling section works for a long time, the sand mulling blade can be seriously worn but can be disassembled and replaced. However, the helical blades of the conveying section are severely worn, and only the entire rotating 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 that the strength of each part of a sand mold is different, only needs the sand mixing blade when the sand mold is seriously abraded, does not need to replace the whole rotating shaft and reduces the cost.
In order to achieve the aim, 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 axial direction of the rotating shaft; the cross section of the blade mounting hole is of a gourd-shaped structure, the large circle of the gourd-shaped structure is used for inserting a tool holder of the sand mulling blade, and the small circle of the gourd-shaped structure is used for inserting a limiting part arranged on sand of the sand mulling blade and used for preventing the blade from rotating; the blade mounting holes are distributed along the axial direction of the rotating shaft, the angle between the connecting line of the circle centers of the large circle and the small circle and the axial line of the rotating shaft is periodically deflected, and the adjacent sand mulling blades are arranged in the opposite direction; the blade mounting holes are positioned on the spiral line which is spirally distributed, and the deflection angles of the connecting line of the circle centers of the large circle and the small circle and the axis of the rotating shaft are the same for each blade mounting hole in the half circle which is spirally distributed.
The principle and the advantages are as follows:
1. the blade mounting hole is the setting that the spiral distributes along rotation axis direction for a plurality of blade mounting holes reach helical blade's in the current roller mill effect, make molding sand and liquid material can mix fully, and only need when wearing and tearing are serious the roller mill blade can, need not to change whole rotation axis, 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 helix that the spiral distributes, and the setting that the deflection angle of each blade mounting hole in the spiral distribution half-period is the same, realize that the mulling blade distributes along different angles, in order to reach the purpose that promotes the mulling homogeneity, avoid appearing the condition that each position intensity of sand mould differs, make the molding sand mix more fully with the liquid material.
Furthermore, eight blade mounting holes which are spirally distributed for one circle on the same spiral line are arranged; the angles between the connecting line of the circle centers of the large circle and the small circle of the blade mounting holes distributed along the axial 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 the blade mounting holes are periodically and circularly deflected.
Further, the axial distance between the two blade mounting holes of the axis of the rotating shaft is 10-20 mm.
The distribution density of the blade mounting holes is convenient to adjust, and therefore the sand mulling blades are adjusted to be distributed along different angles. Thereby leading the molding sand and the liquid material to be mixed more fully or being convenient for installation and maintenance.
Furthermore, the width of the tool bit of the sand mulling blade is 30mm, the thickness of the tool bit is 10mm, the diameter of the large circle of the tool holder is 15mm, and the length of the tool holder is 20 mm.
So that the molding sand and the liquid material are mixed more fully, and the installation and the maintenance are convenient.
Furthermore, the material of the tool bit of the sand mulling blade is tungsten carbide wear-resistant alloy, and the material of the tool holder is 35 CrMoNi.
Has good wear resistance and corrosion resistance to ensure the service life.
Further, the small circle diameter is 6 mm. The processing of the sand mulling blade is convenient, and the structural stability of the sand mulling 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 blade for mulling according to an embodiment of the present invention;
FIG. 3 is a schematic view of the blade of FIG. 2 in three directions ABC;
fig. 4 is a schematic view of the blade mounting holes distributed along the axial direction of the rotating shaft on the rotating shaft in fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the blade mounting structure comprises a rotating shaft 1, a No. 1 blade mounting hole 2, a No. 2 blade mounting hole 3, a No. six blade mounting hole 4, a No. five blade mounting hole 5, a No. four blade mounting hole 6, a No. three blade mounting hole 7, a No. 8 blade mounting hole 8, a No. 7 blade mounting hole 9, a sand mulling blade 10, a threaded section 11 and a limiting part 12.
Examples
A blade structure for a sand mixing machine of a continuous sand mixing machine, substantially as shown in figures 1 to 4 of the accompanying drawings: including rotation axis 1 and a plurality of sand mulling blade 10, set up a plurality of blade mounting holes that are the spiral distribution along 1 axis direction of rotation axis on the rotation axis 1, its structure is similar to helical blade's structure, and according to helical blade's structure can know, has two spiral lines of intertwining and mutual noninterference, is similar to the DNA double helix. The number of the blade mounting holes spirally distributed on one circle on one spiral line is eight, and the eight blade mounting holes are arranged in a through hole shape due to the fact that two spiral lines exist.
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 in 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 an eighth blade mounting hole. Wherein, No. 1 blade mounting hole 2 and a blade mounting hole intercommunication constitute the through-hole that runs through 1 axis of rotation axis, and other blade mounting holes are the same, and from 1 terminal surface of rotation axis, the deflection angle between the adjacent blade mounting hole is 45, and evenly divide into eight equal divisions.
The cross-sectional shape of blade mounting hole is calabash column structure, the great circle of calabash column structure is used for the hilt of mulling blade 10 to insert, the little circle of calabash column structure is used for preventing blade pivoted locating part 12 that sets up on the mulling blade 10 husky to insert.
As shown in fig. 4, the blade mounting holes distributed along the axial direction of the rotating shaft 1 have a connection line between the centers of the large circle and the small circle and the axial angle of the rotating shaft 1 periodically deflect, and the adjacent mulling blades 10 are arranged in opposite directions (i.e. turned over by 180 °), for example, in fig. 1, the tool bit of the mulling blade 10 of the No. 1 blade mounting hole 2 faces upward, and the tool bit of the No. five blade mounting hole 5 penetrates out. In this embodiment, as shown in fig. 4, the angles between the connecting line of the centers of the large circle and the small circle of the blade mounting holes distributed along the axial direction of the rotating shaft and the axial direction of the sand mulling shaft are 0 °, 15 °, 45 °, and 90 ° respectively, and the blade mounting holes are periodically and cyclically deflected; for example, the number 1 insert mounting hole 2 is 0 deg., then the immediately adjacent number five insert mounting hole 5 is 15 deg.. In other embodiments, the line connecting the circle center of the large circle and the circle center of the small circle of the blade mounting hole and the axial direction of the sand mixing shaft can be respectively 0 degree, 45 degree, 60 degree and 90 degree, and the directions can be freely adjusted.
The blade mounting holes are positioned on the spiral line which is spirally distributed, and the deflection angle of the connection line of the circle centers of the large circle and the small circle of each blade mounting hole in the half circle of the spiral distribution is the same as that of the axis of the rotating shaft 1. As shown in fig. 1, the deflection angle of the No. 1 blade mounting hole 2 is 0 °, and then the deflection angles of the No. 1 blade mounting hole 2, the No. 2 blade mounting hole 3, the No. 3 blade mounting hole and the No. 4 blade mounting hole in the spirally distributed 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 also 0 degrees. And 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. six blade mounting hole 4, 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 large circle and the small circle of the blade mounting holes distributed along the axial direction of the rotating shaft and the axial direction of the sand mulling shaft are respectively 0 degree, 15 degrees, 45 degrees and 90 degrees, and the blade mounting holes are subjected to periodic cyclic deflection.
The installation of the sand mulling blade 10 on the blade mounting hole on the helix adopts the interval setting, for example, in fig. 1, the tool bits of the sand mulling blade 10 of the No. six blade mounting hole 4 and the No. four blade mounting hole 6 face upwards, and the tool holder of the sand mulling blade 10 penetrates out of the No. five blade mounting hole 5.
As shown in figures 1 and 4, the axial distance between the two blade mounting holes of the axis of the rotating shaft 1 is 10-20 mm. This embodiment uses 15 mm.
As shown in fig. 2 and 3, the tool bit of the sand mixing blade 10 is made of tungsten carbide wear-resistant alloy, and the tool holder is made of 35 CrMoNi. The width of the 10 cutter heads of the sand mulling cutter blades is 30mm, the thickness of the 10 cutter heads is 10mm, the diameter of the big circle of the cutter handle is 15mm, and the length of the big circle of the cutter handle is 20 mm. The small circle diameter is 6mm, sets up the size structure of locating part 12 according to the small circle diameter. Threaded sections 11 are arranged at the front end and the rear end of a tool handle of the sand mulling blade 10, nuts are sleeved at the front end of the tool handle of the sand mulling blade 10, and nuts are used at the rear end of the tool handle of the sand mulling blade 10. The blade 10 is fixed to the rotary shaft 1 by pressing and clamping a nut and a nut.
The specific implementation process is as follows:
the blade mounting holes distributed along the axial direction of the rotating shaft 1 are provided with sand mulling blades 10 at intervals, and the blade mounting holes on the spiral line are also provided with sand mulling blades 10 at intervals. Make a plurality of sand mulling blades 10 reach the effect of sand mulling blade 10 and helical blade in current sand mulling machine simultaneously for the molding sand can mix fully with liquid material, and only need when wearing and tearing are serious sand mulling blade 10 can, need not to change whole rotation axis 1, the cost is reduced.
The angle of each blade mounting hole along 1 axis direction of rotation axis distribution, the setting of periodic deflection to and be located the blade mounting hole on the helix that the spiral distributes, and the setting the same at the deflection angle of each blade mounting hole of spiral distribution half internal, realize mulling blade 10 along different angular distributions, in order to reach the purpose that promotes the mulling homogeneity, avoid appearing the condition that each position intensity of sand mould differs, make the molding sand mix more fully with the liquid material. And each single piece can be replaced independently without replacing the whole rotating shaft, thereby reducing the cost.
The foregoing are merely exemplary embodiments of the present invention, and common general knowledge in the field of known specific structures and characteristics is described in more detail herein, so that a person of ordinary skill in the art would know how to implement the present invention based on the present disclosure and may now appreciate that many modifications may be made to the present disclosure without departing from the spirit and scope of the present invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The utility model provides a sand mulling blade structure of continuous sand mulling machine, includes rotation axis and a plurality of sand mulling 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 cross section of the blade mounting hole is of a gourd-shaped structure, the large circle of the gourd-shaped structure is used for inserting a tool holder of the sand mulling blade, and the small circle of the gourd-shaped structure is used for inserting a limiting part arranged on sand of the sand mulling blade and used for preventing the blade from rotating; the blade mounting holes are distributed along the axial direction of the rotating shaft, the angle between the connecting line of the circle centers of the large circle and the small circle and the axial line of the rotating shaft is periodically deflected, and the adjacent sand mulling blades are arranged in the opposite direction; the blade mounting holes are positioned on the spiral lines which are spirally distributed, and the deflection angles of the connecting line of the centers of the large circle and the small circle of each blade mounting hole in the half circle of the spiral distribution are the same with the deflection angle of the axis of the rotating shaft.
2. The blade structure of a sand mixer of a continuous sand mixer according to claim 1, characterized in that: eight blade mounting holes which are spirally distributed for one circle on the same spiral line are arranged; the angles between the connecting line of the circle centers of the large circle and the small circle of the blade mounting holes distributed along the axial 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 the blade mounting holes are periodically and circularly deflected.
3. The blade structure of a continuous kneading machine of claim 1, characterized in that: the axial distance between the two blade mounting holes of the axis of the rotating shaft is 10-20 mm.
4. The blade structure of a sand mixer of a continuous sand mixer according to claim 1, characterized in that: the width of the tool bit of the sand mulling blade is 30mm, the thickness of the tool bit is 10mm, the diameter of the large circle of the tool holder is 15mm, and the length of the tool holder is 20 mm.
5. The blade structure of a sand mixer of a continuous sand mixer according to claim 1, characterized in that: the material of the tool bit of the sand mulling blade is tungsten carbide wear-resistant alloy, and the material of the tool holder is 35 CrMoNi.
6. The blade structure of a sand mixer of a continuous sand mixer according to claim 1, characterized in that: the diameter of the small circle is 6 mm.
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 |
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| 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 true CN115090828A (en) | 2022-09-23 |
| CN115090828B CN115090828B (en) | 2023-08-04 |
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| 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 |
|---|---|---|---|---|
| CN201442073U (en) * | 2008-12-12 | 2010-04-28 | 无锡锡南铸造机械有限公司 | Sand mixer stirring tool |
| CN101628317A (en) * | 2009-07-27 | 2010-01-20 | 常州市通力机电设备制造有限公司 | Continuous sand mixer |
| 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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| US20190126284A1 (en) * | 2017-10-27 | 2019-05-02 | Eteros Technologies Inc. | Helical-bladed cutting reel |
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| CN115090828B (en) | 2023-08-04 |
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