CN85102806A - Disk screen equipment, disc assembly and method - Google Patents
Disk screen equipment, disc assembly and method Download PDFInfo
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- CN85102806A CN85102806A CN198585102806A CN85102806A CN85102806A CN 85102806 A CN85102806 A CN 85102806A CN 198585102806 A CN198585102806 A CN 198585102806A CN 85102806 A CN85102806 A CN 85102806A CN 85102806 A CN85102806 A CN 85102806A
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Abstract
In disk screen equipment and the disc assembly, each disc assembly comprises that a major axis is suitable for being contained in pivotally in the disk screen equipment; The structure of elongated scale and fore lock is arranged on the axle, and it is along the axle longitudinal extension and be fixed on the axle, and provides a longitudinal extension and in the face of the edge of circumference; In this edge a succession of longitudinal separation is arranged and the scale that circumferencial direction stretches out and the recess of fore lock, the screen cloth disk of ring-type is contained on the axle, and disk interior diameter fore lock shoulder is engaged in the recess.This fore lock structure may be along the longitudinal region protuberance of the cylindric circumference of axle, but also may fall in along this district.There is a loose check lock lever to be suitable for the key shoulder is locked in the recess.
Description
The invention relates to the 4th, 301, No. 930 described the type disk screen equipments of patent of the U.S., last patent optionally is incorporated in this as a reference.The present invention is particularly about this type device: the structure of new-type improvement disk screen assembly is done and manufacture method.
Point out that in last patent former technology is owing to having a large amount of disc assemblys to have some problems on the axle of disk screen equipment.Even manufacturing tolerance has small change, also can damage groove width from mesh-like one end to its other end.In the making in early days,, need a large amount of craft to assemble for reaching groove width fully uniformly.Such a hand assembled, the waste of its time and cost result are difficult to prediction.When we needed very narrow groove width, problem was just more thorny.When groove width that disk defined during in the 10mm left and right sides, problem is just very serious.And the narrower groove width of industrial requirement as 8mm and 5mm, then makes problem even more serious.
Above-mentioned patent has an important progress technically, and it is welded on quite short wheel hub each rotating shaft in the screen cloth with a plurality of disks and is installed on the axle.But meeting some difficulties aspect the sufficient intensity of guaranteeing to weld between wheel hub and disk internal diameter.When operation, the screen cloth disk of rotation suffers stone or other external hard objects, when producing rare load stress, may make and cause disk from the loosening danger of wheel hub by welding seam breaking.As the 4th, 301, disclose in No. 930 patents, this quite short tubulose wheel hub module is installed method really than United States Patent (USP) the 4th, 037, and the last method of axle that disk directly is welded in that is disclosed for No. 723 replaces the disk of damage in the combination of disk easily.Under the situation of back one patent, in case there is disk to damage, because renewal cost is high, usually whole axle all abandons, and does not change disk.
United States Patent (USP) the 4th, 239 is declared a kind of arrangement No. 119, and it can keep disk correctly to arrange on axle.This patent is installed in the disk fastener of fan-shaped grooved hole on the axle, and has interior tooth bar to insert in the slotted eye in the disk.In any case this arrangement cost is very high, and needs heavy assembly manipulation.
One of free-revving engine of the present invention provides the disk screen equipment of new and an improvement, and disc assembly and method thereof can overcome problems such as shortcoming that former arrangement and method have, obstacle, inefficiency.
Another purpose of the present invention provides a disk screen equipment new and improvement, and its disc assembly in this device is the structure of a new improvement.Make that individual other disk can replace simply effectively whenever necessary.
Further object of the present invention provides the disk screen assembly of new improvement, and it can more effectively produce and spend less than in the past structure.
The present invention also provides the manufacture method of the novelty improvement of a disk screen assembly simultaneously.
Its disc assembly of disk screen equipment according to principle of the present invention provides comprises a major axis, at its two ends device is arranged, and disc set is attached together in disk screen equipment can rotate; An elongated scale and a fore lock structure, this structure along the peripheral longitudinal extension of axle be fixed in axle around, it is longitudinal extension and facing to circumference on one side.A succession of longitudinal separation and periphery calibration and the fore lock recess to extension arranged in this edge.The screen cloth disk of ring-type is installed on the aforementioned axis, and the fore lock device is arranged on the disk internal diameter, can mesh together with above-mentioned recess, and device is locked in above-mentioned fore lock device on the above-mentioned recess, use that to keep the mutual distance of disk distance to each other and axle upper notch consistent, and disk is cooperated with aforementioned axis.
The present invention also is provided for the manufacture method of the disc assembly of disk screen equipment, and this method comprises: a major axis is provided, is provided with device at its two ends, disc assembly is contained in the rotary strainer net arrangement can be rotated; One microscler scale and fore lock structure are set on this axle, and this structure is along the longitudinal extension of axle and be fixed on the axle, and a longitudinal extension is arranged, towards around the edge; Form a succession of recess that scale and fore lock are arranged in this edge, recess has at interval in the vertical each other, and its opening then extends towards the direction of circumference; The screen cloth disk that ring-type is installed is furnished with the device of fore lock on the disk internal diameter on aforementioned axis; The fore lock device is engaged in above-mentioned recess, and makes the fore lock device be locked on the recess, use that to keep the mutual distance of disk distance to each other and axle upper notch consistent, and disk is cooperated with aforementioned axis.
Other purposes of the present invention, characteristic and advantage all will be accompanied by accompanying drawing and display in following description about indivedual forms.Though may do some changes and correction, also will not depart from the main idea and the category of disclosed new ideas.
Figure one is the diagrammatic side views of a disk screen equipment, and rotary type has been installed the disk screen assembly that structure is done according to the present invention on the disk screen equipment.
The amplification vertical view of the part screen cloth bed that figure two is got for II-II line in figure one.
Figure three is the understandings of the present invention being made the method for disc assembly for promoting, the part exploded view of being done.
Figure four is the partial graph of one of the present invention complete circle disc assembly.
Figure five is the partial cross section figure of V-amplification that the V line is done in figure four.
The partial cross section figure that figure six is done by IV-IV line in figure five.
The partial cross section figure that figure seven is done by VII-VII line in figure six.
Figure eight is the part schematic perspective view of an amendment.
As shown in figure one and figure two, a typical disk screen equipment 10 has comprised: a framework 11, it is supporting a screen cloth bed 12, and a series of being parallel to each other arranged on the screen cloth bed, together Xuan Zhuan disc assembly 13.One columned axle 14 is arranged in each disc assembly 13.All axles 14 all may be hollow tubular structure, and tool may length all equate, all adorning a series of longitudinal separations of work on each and concentric screen cloth disk 15, it is cooperating staggered each other with screen cloth disk 15 on the adjacent shafts, it is very clear that this situation is seen in figure two.
Need the material that filters as wood pulp etc., be transported to the feed end of mesh-like 12, as shown by arrows, fall on the receiving terminal of screen cloth bed via chute 20.Sizeable wood pulp fibre grain and muddy water together, the screen cloth slotted eye via 15 in disk enters funnel 21.Excessive wooden particle reaches other and can't continue to move forward then spilling out by the material of screen cloth slotted eye too greatly, as shown by arrows, to hold outlet chute 22 to go via losing of screen cloth bed 12.
By tooth 23 and interval 24 therebetween,, strengthened the filtration of disk 15 at the even laciniation that the periphery constituted of disk 15.Tooth 23 should be smaller than the scope of alternating share between disk.Because all disks 15 are all with equidirectional rotation, thus effectively elimination excessive material, material too much is moved on, lose end or outlet side until screen cloth bed 12.
In order to reach maximum filter effect, on each disc assembly 13, all disks 15 all can not be crooked, and must be correctly spaced apart each other, so by formed screen mesh groove between staggered disk, just can be in the required strict control margin of tolerance.The present invention can reach these parameters that is fit to simple and easy, cost-effectively.
Each major axis 14 surface is a cylindrical shape, and each disk 15 is a circulus, and the size of its internal diameter circumference 25 can just be connected airtight by relative axle 14, and can be in the cofree slip of axle.New improved device is provided simultaneously,, and has rotated with axle so that disk 15 can keep each interval to come on relevant axle 14.This device comprises locking device 28, and along axle 14 longitudinal extensions and be fixed on microscler scale and fore lock structure 27 on the axle.
In a preferable form, the structure 27 of each scale and fore lock, comprise elongated, a restricted width system, narrower (with the circumference of axle relatively) and the lath of suitable thickness is arranged, its length is made an appointment with axle is same in opposite directions, lath laterally be preferably arch or crooked, in conjunction with the lengthwise zone of over glaze 14 peripheries down and complementary with it, in Fig. 6, can know and find out equably.We can fix attached works on axle 14 with lath 27 with any one suitable method, stress when making it can resist by operation fully and the displacement that strain caused.Though our available point, screw or a kind of anchor clamps are fixedly deposited lath 27 on the axle 14, in a kind of suitable pattern shown in figure two to figure five, the two ends of lath 27 can be weldingly fixed on it on axle at 29 places at least.In order to guarantee stability more, can be on lath 27 along longitudinal extension and facing to the edge 31 of circumference, across in the welding of 30 places, that lath 27 is fixing.We load onto a plurality of laths 27 on axle 14, will be a kind of gratifying arrangement, preferably shown in figure six, two laths 27 are arranged in the both sides of axle 14 diameter symmetry respectively.
For device that scale and fore lock are arranged along axle 14 usefulness many disk 15 is spaced apart, simultaneously the device of disk with fore lock is installed on the axle, on one of each lath 27 edge 31, a succession of scale and fore lock recess 32 are arranged, it has at interval in the vertical each other, and its opening extends towards the direction of circumference, and this recess is inwardly stretched into by edge 31, preferably reaches the lath 27 width place of half approximately.
Each disk 15 within it the footpath edge 25 on, indent 33 is arranged, its degree of depth all equates with the thickness and the width of lath 27 with width, the design of indent 33 make its can with lath 27 driving fits, but still can allow lath freely slide, so that can disk 15 longitudinally be installed on the axle by any end of axle 14 towards its other end of work.When each disk 15 along lath 27, arrive the position that it will keep on axle 14, when (this position is scale and fore lock recess 32), disk only needs to rotate around its central shaft of work, make at the other inner edge shoulder 34 of disk inner width 33, as the fore lock effect on the disk internal diameter, shown in arrow among the figure three, mesh together and be parked in the bottom of recess with recess.Disk circumference that lath 27 is done rotates like this, formation one gap between the longitudinal edge 35 that makes lath 27 and the shoulder 37, and this shoulder 37 is positioned at the opposite of the shoulder of using as fore lock on the indent 33 34.When all disks 15 all have been installed on the axle 14, and all rotated the shoulder 34 that makes as fore lock when meshing together with scale and fore lock recess 32, by bar 28 formed locking devices, 35 longitudinally slip into the gap of being defined with shoulder 37 along the edge, like this with disc lock the location on.There is any to note, is exactly that each check lock lever 28 its width and thickness will just relative locking gap driving fits, but still can allows check lock lever slide into its location.Scale that the length of each check lock lever 28 is approximately relevant with it and fore lock lath 27 equate.We can be locked in check lock lever 28 on the location with any suitable device, but this device can be removed when needs, so as when disk 15 to be installed by opposite step, disk is removed.In fact, the device that each can be fixed check lock lever 28 and itself also can remove has comprised a counter-sunk screw 38, via the screw 39 at bar 28 1 ends, mesh together with the screw block set 40 of being located at axle last one selected end, this screw base can touch in its contiguous disk 15 foreign sides.
In order to make fore lock shoulder 34 can enter recess 32 at an easy rate, preferably recess can have the edge 41(of convergent to see figure seven), make that the mouth of recess is wideer a little than the thickness of disk, and the thickness of width of holding within the recess and disk is very approaching, closely meshes together with the shoulder 34 with disk.
Shown in figure eight, use solid shafting 14 ', and have on the axle axle journal 17 ', this axle journal can be the part of solid shafting, also may be additional superincumbent.And axle also may be hollow and enough thickness parts are arranged, the scale of disk screen and fore lock can be implemented in the following manner, the scale and the fore lock structure of vertical chase groove 42 forms promptly are set on the circumference of axle, this structure can be positioned at a position, or on the position that is spaced apart from each other on a plurality of circumference, for example be positioned at two opposite side of a last diameter.Disk 15 ' within on the circumference, the fore lock device lug 43 that extends radially inwardly individually then is set, the size of lug can just with chase 42 tight engagement, but still can freely slide, and disk 15 ' within the footpath 25 ' also with axle 14 ' the circumference driving fit together, equally also can freely slide.Axle 14 ' circumference on, define in the edge 45 of chase 42, then constitute scale and fore lock recess 44 with required longitudinal separation.Recess 44 then equates with the width of fore lock lug 43 in the degree of depth of circumferencial direction.Therefore, when disk 15 ' along axle 14 ' length when sliding into selected installation site, fore lock lug 43 also slides to the location along chase 42, and can mesh together lug and scale and the fore lock recess 44 selected as coming rotary disk with the direction shown in the arrow among the figure eight this moment.Along chase 42, slip into the suitable check lock lever of a size 47 then, make disk fore lock lug 43 be locked in the recess 44, so that disk is fixed on the location.Therefore, the width of check lock lever 47, should be able to wedging between the vertically shoulder shape edge 45 and 48 of 42 liang of opposite side of chase and can slide betwixt.Removable fixture on first check lock lever 47, the same with on check lock lever 28 comprised a counter-sunk screw 49, via the screw 50 at bar 47 1 ends, lock a screw block set 51 again, and this screw block set 51 is positioned at one of chase 42 end.
For make axle 14 and 14 ' go up each disk a tooth 23,23 ' and gap 24, a 24 ' acquisition be staggered, therefore, between interlaced disk, the indent 33 of disk 15 and disk 15 ' fore lock lug 43, the off normal of half tooth is all arranged on circumference.As shown in figure three and figure four, the disk 15 in every interval, the tooth 23 of disk and gap 24 are all vertically aimed at along the axle of axle 14, and disk betwixt also is similarly to aim at mutually every a disk.And the tooth of the tooth 23 on each disk and its adjacent disk all has the off normal of half facewidth.As shown in figure eight, the same situation of disk 15 ' also have, each disk 15 ' tooth 23 ', the disk 15 adjacent thereto ' off normal of half facewidth is arranged on circumference, and its tooth 23 ' just aiming in the vertical crack 24 between the adjacent disk '.Thus, as shown in figure three, figure four, the tooth of disk is often seen as us, spiral arrangement.The tooth of disk is arranged like this, can promote the Collaboration of disk on the screen cloth bed 12.
By preceding described, we can find out at an easy rate and the invention provides new, improvement an and effectively disk screen combination.Make us can at an easy rate disk correctly be arranged on each axle; Also avoid simultaneously the disk weldering extremely on the location; When needed, the replacement of disk also is very easy.Because in use, disk is vulnerable to damage, but on any axle, even all disks all must be changed, the mechanism of axle and scale and fore lock structure and locking can remain and reuse at least.Under any circumstance, have only the disk of those damages just need be replaced.We can finish this work easily, only machine need be stopped the very short time cost labour cost seldom, as long as with screwdriver or other proper tools, remove the check lock lever on the lower shaft, unload affected disk then, depending on the circumstances or the needs of the situation whether will more change with decision.Change disk and can carry out, do not need disc assembly is taken repair workshop in the place that operation is filtered.The manufacturing that disc assembly is initial and the maintenance of whole assembly are no matter all be cost-effective in equipment and artificial cost.
We can recognize, under spirit that does not depart from notion proposed by the invention and principle, may make some changes and modification.
Claims (20)
1, a disk screen equipment is characterized in that, comprise a screen cloth bed, the bed have a succession of turn round simultaneously parallel to each other and across disc assembly, each disc assembly has a lot of screen cloth disks of a succession of concentric longitudinally, these screen cloth disks also have axial interval and cross one another with disk on the adjacent disc assembly, and this device comprises:
Each above-mentioned disc assembly has an elongated axle, and two ends have device pivotally this disc assembly to be contained in the disk screen equipment;
An elongated scale and fore lock structure are arranged, also be fixed on the circumference of axle, and provide a longitudinal extension and towards the edge of circumference along the axle longitudinal extension;
Have in the above-mentioned edge a succession of longitudinal separation and the scale and the fore lock recess that extend to circumferencial direction;
Above-mentioned screen cloth disk is ring-type and is contained on the above-mentioned axle that the disk internal diameter has the fore lock device, and is engageable in above-mentioned recess;
And have device to be installed in the recess to lock above-mentioned fore lock, be spaced from each other in order to do keeping the position of above-mentioned disk, and can turn round simultaneously with axle according to recess.
2, the device according to claim 1 is characterized in that wherein, above-mentioned scale and fore lock structure comprise elongated and the conditional lath device of width, and device is on the circumference of above-mentioned axle, and lath is inner also recess.
3, the device according to claim 2, it is characterized in that, wherein, the internal diameter fore lock device of above-mentioned disk is included in an indent in its each internal diameter, there is a shoulder at the edge of disk internal diameter at the place, one side of each indent, this shoulder constitutes above-mentioned fore lock device, when disk is contained in when spool last, this shoulder is aimed at selected recess, and disk is rotated on axle, this fore lock shoulder is embedded in the recess, locking device comprises a check lock lever, and the edge that is suitable for own recess slips into the alignment portion of above-mentioned gap indent along the edge to edge one shoulder of lath device, and have device that check lock lever is fixed on the axle, but also can unclamp.
4, the device according to claim 3 is characterized in that wherein, the gap indent of the disk that above-mentioned every interval is has relative off normal each other, therefore makes the tooth that above-mentioned disc assembly is placed along its length off normal is arranged interlacedly outward.
5, the device according to claim 1 is characterized in that, wherein, the both sides of above-mentioned recess are extended by its inward at both ends, so that the fore lock device is embedded in the recess.
6, the device according to claim 1 is characterized in that, wherein, above-mentioned scale and fore lock structure extend on the cylindric circumference of axle.
7, the device according to claim 6 is characterized in that wherein, above-mentioned locking device comprises a check lock lever, this check lock lever be suitable for being contained on the disk each cooperate between lock shoulder and above-mentioned scale and the fore lock structure, this check lock lever is also replaceable.
8, the device according to claim 1, it is characterized in that, wherein, above-mentioned scale and fore lock structure comprise a longitudinal region of the cylindrical shape circumference of axle, and wherein, a chase is longitudinally arranged in above-mentioned zone, above-mentioned recess extends around circumference towards the limit of circumference from a longitudinal extension that defines this chase, fore lock device on above-mentioned disk is included in the internal diameter lug that radially extends to internal diameter on the disk, this lug is embedded in the above-mentioned recess, a locking device that comprises check lock lever, check lock lever is contained in this chase, and this lug is locked in recess.
9, the disk screen equipment according to claim 1 is characterized in that its disc assembly comprises:
An elongated axle, there is device at its two ends, revolvably disc assembly are contained in the screen device;
Scale and fore lock structure, along above-mentioned axle longitudinal extension and be fixed in axle around on, and provide a longitudinal extension and towards the edge of circumference;
A succession of longitudinal separation is arranged in the above-mentioned edge, and the scale and the fore lock recess that extend to circumferencial direction;
Ring-type screen cloth disk is contained on the above-mentioned axle, and its internal diameter has the fore lock device engageable in above-mentioned recess;
And have device to be installed in the recess to lock above-mentioned fore lock, can be spaced from each other according to the position of recess in order to do keeping above-mentioned disk, and can turn round simultaneously with axle.
10, the disc assembly according to claim 9 is characterized in that wherein, above-mentioned scale and fore lock structure comprise elongated and the conditional lath device of width, is contained on the circumference of above-mentioned axle, and lath is inner also recess.
11, the disc assembly according to claim 10, it is characterized in that, wherein, above-mentioned disk internal diameter fore lock device is included in an indent in the internal diameter, the edge of disk internal diameter has a shoulder on one side each indent, this shoulder constitutes above-mentioned fore lock device, when disk is contained in when spool last, this fore lock shoulder is aimed at recess, and disk rotated on axle, the fore lock shoulder is embedded in this recess, above-mentioned locking device comprises a check lock lever, be suitable for slipping in the alignment portion of above-mentioned gap indent, these gap indents two opposite side that the marginal existence along a shoulder lies in behind the rotary disk in the manner described above by the lath device from the recess edge are provided.But and comprise the device that the check lock lever releasable is fixing.
12, the device according to claim 11 is characterized in that, wherein, the gap indent of the disk that the gap indent of above-mentioned disk internal diameter is with interval, therefore relative off normal is arranged, make the tooth of above-mentioned disc assembly outside, interlaced off normal is arranged along the length of its assembly.
13, the disc assembly according to claim 9 is characterized in that, wherein, above-mentioned scale and fore lock structure extend on the cylindric circumference of axle.
14, the disc assembly according to claim 9 is characterized in that, wherein, above-mentioned scale and fore lock structure extend on the cylindric circumference of axle.
15, the disc assembly according to claim 14 is characterized in that wherein, above-mentioned locking device comprises a check lock lever, and this check lock lever can be contained on the disk between the locking shoulder and above-mentioned scale and fore lock structure, and this check lock lever is also replaceable.
16, the disc assembly according to claim 9, it is characterized in that, wherein, above-mentioned scale and fore lock structure comprise one lengthwise circumferential area, a chase is longitudinally arranged in above-mentioned zone, above-mentioned recess extends from defining the longitudinal extension of this chase and facing circumferencial direction on this circumference, and locking device comprises that a check lock lever can pack in the above-mentioned chase.
17, the disk screen equipment according to claim 1 is characterized in that the manufacture method of its disc assembly comprises:
An elongated axle is provided, and there is device at its two ends, pivotally this disc assembly are contained in the disk screen equipment;
An elongated scale and fore lock structure are provided on axle, this structure along the axle longitudinal extension and be fixed in the axle around on.And has a longitudinal extension and towards the edge of circumference;
In above-mentioned edge, form a succession of longitudinal separation and to extended scale of circumferencial direction and fore lock recess.
Ring-type screen cloth disk is contained on the above-mentioned axle, and the disk internal diameter has the fore lock device, is engaged in the recess;
This fore lock device is combined in the recess; And this fore lock device is locked in the recess, can be spaced from each other according to the position of recess in order to do keeping above-mentioned disk, and can turn round simultaneously with axle.
According to the described method of claim 17, it is characterized in that 18, this method comprises: on around the axle, provide the scale fore lock structure of a protuberance; And in above-mentioned disk internal diameter, make the gap indent, so that hold this ridge structure, when disk slips into its position on axle, and when the fore lock shoulder on indent one side was aimed at selected recess, rotating circular disk, fore lock shoulder entered selected recess; Check lock lever is inserted between the locking shoulder at another side place of above-mentioned edge and above-mentioned indent, take in recess with the locking wedge pin device.
19, the method according to claim 17 is characterized in that, this method is included on the circumference cylindraceous of axle and forms a vertical chase so that above-mentioned scale and fore lock structure to be provided; Form scale and fore lock recess on one side of defining chase; On above-mentioned disk, provide the fore lock device, the lug of this device form for extending radially inwardly; The fore lock lug is packed in the above-mentioned recess, and check lock lever is inserted in the chase, in order to do lug is locked in the above-mentioned recess.
20, the method according to claim 17, it is characterized in that, this method comprises along the uniform tooth of circumference arrangement of above-mentioned disk and gap therebetween, disk is contained in the disc assembly in the relation that half tooth off normal is arranged on the circumference every one, the tooth that makes the disk of whenever being separated by is on extend longitudinally ranks separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585102806A CN85102806A (en) | 1985-04-20 | 1985-04-20 | Disk screen equipment, disc assembly and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585102806A CN85102806A (en) | 1985-04-20 | 1985-04-20 | Disk screen equipment, disc assembly and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85102806A true CN85102806A (en) | 1986-10-15 |
Family
ID=4792773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585102806A Pending CN85102806A (en) | 1985-04-20 | 1985-04-20 | Disk screen equipment, disc assembly and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307732A (en) * | 2014-09-28 | 2015-01-28 | 扬州高扬机电制造有限公司 | Oval poking wheel sieve mechanism |
-
1985
- 1985-04-20 CN CN198585102806A patent/CN85102806A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307732A (en) * | 2014-09-28 | 2015-01-28 | 扬州高扬机电制造有限公司 | Oval poking wheel sieve mechanism |
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