CN110116884B - Screw feeder and linkage thereof - Google Patents
Screw feeder and linkage thereof Download PDFInfo
- Publication number
- CN110116884B CN110116884B CN201910486628.XA CN201910486628A CN110116884B CN 110116884 B CN110116884 B CN 110116884B CN 201910486628 A CN201910486628 A CN 201910486628A CN 110116884 B CN110116884 B CN 110116884B
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- China
- Prior art keywords
- flange
- suspension device
- spline shaft
- spline
- shaft assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000725 suspension Substances 0.000 claims abstract description 92
- 238000007789 sealing Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/32—Adaptations of bearings or couplings for supporting and connecting screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screw Conveyors (AREA)
Abstract
The invention discloses a suspension device, which comprises a suspension device body and a flange spline shaft assembly, wherein the flange spline shaft assembly is arranged in the suspension device body and used for connecting two adjacent blade shafts; the suspension device body is provided with a bearing bin for accommodating the flange spline shaft assembly, and a bearing for sleeving the flange spline shaft assembly is arranged in the bearing bin; the blade shaft assembly further comprises two flanges which are used for being welded on two adjacent blade shafts respectively, and flange flanges which are used for being detachably connected with the flanges are arranged at two ends of the flange spline shaft assembly. The invention also discloses a screw feeder comprising the suspension device. The suspension device solves the problem that the screw feeder is inconvenient to overhaul and maintain.
Description
Technical Field
The invention relates to the technical field of material conveying machinery, in particular to a suspension device. The invention also relates to a screw feeder comprising the suspension device.
Background
The screw feeder is mainly applied to short-distance conveying of powdery and small granular materials in industrial production, and has the advantages of simple structure, good sealing performance, low manufacturing cost and reliable operation. Under the situation that the current environment-friendly situation is more and more severe, the advantages of good sealing performance are particularly outstanding because the materials are conveyed in the closed space. Referring to fig. 1, the screw feeder uses a screw blade shaft 8 sealed in a housing to rotate under the drive of a power source, and continuously transfers the material falling from a feed inlet to a discharge outlet along the axial direction, so as to enter the next process.
The screw feeder is divided into a long shaft type screw feeder and a short shaft type screw feeder according to the length of the blade shafts, the difference of the structures of the long shaft type screw feeder and the short shaft type screw feeder is mainly that the number of the blade shafts 8 is different, and the long shaft type screw feeder is formed by connecting a plurality of blade shafts 8 into a whole shaft through a suspension device. The three-section screw feeder is taken as an example below to illustrate the composition structure, and mainly comprises a power part, a coupling, a front end bearing seat, three blade shafts, a rear end bearing seat, a shell and two suspension devices, wherein the two suspension devices are used for connecting the three blade shafts 8. It is thus seen that the number of blade axles 8 and suspension units can be increased and the power section matched to the load selected to meet longer distance material transport. The suspension device has two main functions, namely, the rotation precision of the blade shaft 8 of the long-shaft screw feeder is ensured; and secondly, the torque transmission function. The suspension device mainly comprises a base, a connecting plate, a bearing bin, a spline connecting shaft 01 and a spline housing 02, wherein the spline connecting shaft 01 is arranged in the bearing bin, and two adjacent blade shafts 8 are respectively welded with the spline housing 02 and are connected through the matching of the spline housing 02 and the spline connecting shaft 01.
Because the suspension device is immersed in the material for a long time, the bearing in the bearing bin is damaged frequently, and the maintenance procedure is complicated, taking the replacement of the bearing of the suspension device as an example, firstly, the shell close to the blade shaft 8 is removed, then the power part is moved left along the axial direction and leaves the installation position, the anchor bolts of the front end bearing seat are removed, the left blade shaft 8 and the front end bearing seat are required to be moved left, the spline housing and the spline shaft are enabled to generate relative displacement in the horizontal direction so as to separate from each other, the suspension device is removed, the new suspension device and the bearing in the suspension device are replaced, and the order is opposite during installation. This is not only time-consuming and laborious, but also dangerous during the hoisting of the blade shaft 8.
Therefore, how to simplify the maintenance and replacement of the suspension device of the screw feeder and its bearings is a technical problem that the skilled person needs to solve.
Disclosure of Invention
The invention aims to provide a suspension device which is simple and convenient to replace and improves the overhaul and maintenance efficiency of a screw feeder. Another object of the invention is to provide a screw feeder comprising a suspension device as described above.
In order to achieve the above object, the present invention provides a suspension device, including a suspension device body and a flange spline shaft assembly disposed in the suspension device body for connecting two adjacent blade shafts;
the suspension device body is provided with a bearing bin for accommodating the flange spline shaft assembly, and a bearing for sleeving the flange spline shaft assembly is arranged in the bearing bin;
the blade shaft assembly further comprises two flanges which are used for being welded on two adjacent blade shafts respectively, and flange flanges which are used for being detachably connected with the flanges are arranged at two ends of the flange spline shaft assembly.
Optionally, fixing holes with the same number and positions are formed in the circumferential direction of the flange and the circumferential direction of the flange, so that the flange and the flange are connected and fixed through the fixing holes.
Optionally, the flange spline shaft assembly includes flange spline shaft and with flange spline shaft cooperation is connected flange spline shaft sleeve, the flange is located flange spline shaft with the both ends that flange spline shaft sleeve deviate from each other.
Optionally, a first spline groove is formed in one end, far away from the flange, of the flange spline shaft, the first spline groove is formed in the circumferential direction of the flange spline shaft, the extending direction of the first spline groove is the same as the length direction of the flange spline shaft, and a second spline groove matched and connected with the first spline groove is formed in the flange spline shaft sleeve.
Optionally, one end of the flange, which is used for being attached to the flange, is provided with a protruding portion protruding outwards so as to be attached to the inner wall of the flange.
Optionally, the boss is in a truncated cone shape tapering from a direction closer to the flange to a direction farther from the flange.
The invention also provides a screw feeder, which comprises a plurality of blade shafts and the suspension device, wherein the adjacent blade shafts are connected through the suspension device.
Optionally, the rotary feeding device further comprises a driving motor for driving the blade shaft to rotate for feeding, and the driving motor is connected with the blade shaft through a coupler.
Optionally, the blade shaft further comprises an upper shell which is arranged above the blade shaft and used for forming a sealed material conveying space for the blade shaft.
Optionally, the upper casing is provided with a manhole for replacing the suspension device, and further comprises a sealing cover for sealing the manhole.
Compared with the background art, the suspension device provided by the invention comprises a suspension device body and a flange spline shaft assembly for connecting two adjacent blade shafts; the suspension device is provided with a bearing bin, a fixed bearing is arranged in the bearing bin, and the bearing is connected with the suspension device body and the flange spline shaft assembly in a rotating way; the suspension device further comprises flanges which are welded to the two adjacent blade shafts respectively, and flange flanges which are connected with the two flanges respectively are arranged at two ends of the spline shaft.
When the bearing in the bearing bin breaks down or the whole suspension device needs to be replaced, the spline shaft assembly and the suspension device body can be sequentially removed by only supporting the blade shafts on two sides of the suspension device to be replaced and removing the connection between the flange and the flange, and the bearing or the whole suspension device is replaced in the reverse order of the installation. The suspension device provided by the invention can be overhauled and replaced without gradually dismantling the blade shaft when being replaced, and the overhauling and maintenance efficiency of the suspension device in the screw feeder is obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a spline connection shaft and spline housing in a prior art suspension;
FIG. 2 is a schematic view of a suspension device according to an embodiment of the present invention;
FIG. 3 is a side view of the suspension of FIG. 2;
FIG. 4 is a schematic view of a screw feeder according to an embodiment of the present invention;
fig. 5 is a block diagram of a flange spline shaft assembly of a suspension device according to an embodiment of the present invention.
Wherein:
01-spline connecting shaft, 02-spline housing, 1-linkage, 2-linkage body, 21-base, 22-connecting plate, 23-bearing bin, 3-flange spline shaft subassembly, 31-flange spline shaft, 32-flange spline shaft sleeve, 33-first spline groove, 34-second spline groove, 35-boss, 4-flange, 5-flange, 6-driving motor, 7-shaft coupling, 8-blade shaft, 9-upper casing, 10-manhole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present invention will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present invention.
Referring to fig. 2 to 5, fig. 2 is a schematic view of a suspension device body according to an embodiment of the present invention, fig. 3 is a side view of fig. 2, fig. 4 is a schematic view of a screw feeder according to an embodiment of the present invention, and fig. 5 is a structural diagram of a flange spline shaft assembly of a suspension device according to an embodiment of the present invention.
The suspension device 1 provided by the invention comprises a suspension device body 2 and a flange spline shaft assembly 3 arranged in the suspension device body 2, wherein the flange spline shaft assembly 3 is used for connecting two adjacent blade shafts 8, and the suspension device body 2 is used for suspending and fixing the flange spline shaft assembly 3. The suspension body 2 is provided with a bearing bin 23, a bearing is arranged in the bearing bin 23, and the bearing is sleeved on the periphery of the flange spline shaft assembly 3, so that the flange spline shaft assembly 3 is rotationally connected with the suspension body 2. The flange spline shaft assembly 3 serves to connect two adjacent blade shafts 8 and to transmit torque between the two adjacent blade shafts 8; the suspension device 1 provided by the invention further comprises two flanges 4 which are used for being welded to two adjacent blade shafts 8 respectively, and two ends of the flange spline shaft assembly 3 are provided with flange flanges 5 which are detachably connected with the two flanges 4 respectively. When the suspension device 1 needs to be replaced, only the blade shaft 8 is required to be supported, the two adjacent blade shafts 8 can be dislocated and moved by detaching the connection between the flange 4 and the flange 5, and then the flange spline shaft assembly 3 and the suspension device body 2 are detached, the blade shafts 8 do not need to be detached step by step and lifted and moved away, and the overhaul and maintenance process of the suspension device 1 of the screw feeder and the bearing inside the suspension device is greatly simplified.
The suspension device 1 according to the invention will be described in more detail below with reference to the drawings and to the specific embodiments.
In one embodiment of the present invention, the suspension device 1 includes a suspension body 2 and a flanged spline shaft assembly 3 mounted within the suspension body 2 for connecting two adjacent blade shafts 8. Referring to fig. 2 and 3, the suspension body 2 has a similar structure to the suspension body 2 in the prior art: the suspension device comprises a base 21 and a bearing bin 23, wherein the base 21 and the bearing bin 23 are connected through a connecting plate 22, the base 21 is used for fixing the suspension device body 2, and the bearing bin 23 and a bearing are used for rotating the connecting flange spline shaft assembly 3 and the suspension device body 2. Since materials often enter the bearing during the feeding process, the bearing and the suspension device 1 may be damaged, and the suspension device 1 and the bearing therein may need to be replaced periodically.
Therefore, the suspension device 1 provided by the invention further comprises two flanges 4, two ends of the flange spline shaft assembly 3 are provided with two flange flanges 5 respectively connected with the flanges 4, and fixing holes are formed in corresponding positions of the flange flanges 5 and the flanges 4 in the circumferential direction, so that the flange flanges 5 and the flanges 4 can be detachably connected and fixed through fasteners such as bolts. The number and the opening positions of the fixing holes on the flange 5 and the flange 4 at the corresponding positions are the same. The two flanges 4 are used for being connected with two ends of the two blade shafts 8, which are close to each other, and simultaneously the flange spline shaft assembly 3 is placed in a bearing of the bearing bin 23, the two flanges 4 are connected with the flange flanges 5 at two ends of the flange spline shaft 31, and then the hanging device body 2 is fixed to the screw feeder through the base 21, so that the hanging device 1 is installed and fixed. When the suspension device 1 needs to be dismantled, the blade shaft 8 does not need to be dismantled step by step, only the connecting end of the blade shaft 8 needs to be supported, the flange spline shaft assembly 3 can be dismantled by dismantling the fasteners between the flange 4 and the flange 5 and moving the blade shaft 8 in a dislocation manner, and then the whole suspension device 1 is dismantled for maintenance and replacement.
The structure of the flange spline shaft assembly 3 is shown in fig. 5, and comprises a flange spline shaft 31 and a flange spline shaft sleeve 32, spline grooves are formed in two mutually matched ends, and flange flanges 5 are arranged at two mutually opposite ends. The first spline groove 33 is formed in one end, far away from the flange 5, of the flange spline shaft 31, the first spline groove 33 is formed in the circumferential direction of the flange spline shaft 31, the first spline groove 33 and the flange spline shaft 31 extend in the same direction, and the second spline groove 34 which is matched and connected with the first spline groove 33 is formed in one end, far away from the flange 5, of the flange spline shaft sleeve 32. In other words, the flange spline shaft 31 and the flange spline shaft 32 are connected by the engagement of the first spline groove 33 and the second spline groove 34, and the flange spline shaft 31 and the flange spline shaft 32 can be separated from each other when the first spline groove 33 and the second spline groove 34 are moved horizontally, so that the flange spline shaft 31 can be easily mounted in the bearing of the bearing housing 23.
Furthermore, the flange 5 on the side of the flange spline shaft sleeve 32 and the side of the flange 4 replacing shaft are provided with convex parts 35 protruding outwards, and when the flange 5 and the flange 4 are connected in a matched manner, the convex parts 35 can be attached to the inner wall of the flange 4, so that the centering connection of the flange 4 and the flange 5 can be better ensured. By way of example, the boss 35 may take the form of a truncated cone tapering from near the flange 5 to away from the flange 5, the diameter of the bottom of the boss 35 being equal to the diameter of the inner wall of the flange 4. The design of the protruding part 35 as a truncated cone-shaped shell as described above facilitates the protruding part 35 to extend into the inner wall of the flange 4, and the flange 4 and the flange 5 are adjusted to achieve a centered connection. The height of the protruding portion 35 is not excessively large, so that the flange 4 and the flange 5 cannot be displaced, and generally, the height of the protruding portion 35 is set to 3 to 5mm. Of course, the protruding part 35 may be disposed on one side of the flange 4, which is attached to the flange 5, and the protruding part 35 of the flange 4 protrudes into the inner wall of the flange 5 to realize the centering connection of the flange and the flange.
According to the suspension device 1 provided by the invention, the flange 4 and the flange 5 can perform dislocation movement, the flange spline shaft 31 and the flange spline shaft sleeve 32 can perform horizontal movement, the replacement of the suspension device 1 can be completed without dismantling and horizontally hanging the blade shaft 8 through dislocation movement, the flange spline shaft assembly 3 can be conveniently installed in the bearing bin 23 of the suspension device body 2 through separation and matching of the flange spline shaft 31 and the flange spline shaft sleeve 32, and the maintenance and replacement efficiency of the suspension device 1 and the bearing thereof is remarkably improved.
The invention also provides a screw feeder, and the structure of the screw feeder is shown in fig. 4: the suspension device 1 comprises a plurality of blade shafts 8 and the suspension device 1 in the embodiment, wherein two adjacent blade shafts 8 are connected through the suspension device 1, more specifically, the adjacent blade shafts 8 are connected through a flange spline shaft assembly 3 and two flanges 4 of the suspension device 1 and are suspended and fixed through a base 21 and a connecting plate 22.
The screw feeder further comprises a driving motor 6 for driving the blade shaft 8 to rotate, wherein the driving motor 6 is connected with the blade shaft 8 through a coupler 7, and a semi-cylindrical upper shell 9 is arranged above the blade shaft 8, so that a sealed material conveying space is formed. In order to facilitate maintenance and replacement of the suspension device 1, a maintenance hole 10 is formed in the upper shell 9 corresponding to the place where the suspension device 1 is fixedly installed, and a sealing cover capable of being turned over and opened is arranged at the maintenance hole 10. In a normal material conveying state, the sealing cover seals the overhaul hole 10 to ensure the tightness of a material conveying space, and in overhaul maintenance, the overhaul hole 10 is exposed by opening the sealing cover, so that overhaul and replacement of the suspension device 1 can be completed without integrally dismantling the upper shell 9. Other parts of the screw feeder are referred to the prior art and are not developed here.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The screw feeder and the suspension device 1 thereof according to the present invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. A suspension device (1) is characterized by comprising a suspension device body (2) and a flange spline shaft assembly (3) which is arranged in the suspension device body (2) and is used for connecting two adjacent blade shafts (8);
the suspension device comprises a suspension device body (2), a flange spline shaft assembly (3) and a bearing bin (23) for accommodating the flange spline shaft assembly (3), wherein the bearing bin (23) is internally provided with a bearing for sleeving the flange spline shaft assembly (3);
the two flanges (4) are welded to the two adjacent blade shafts (8) respectively, and flange flanges (5) used for detachably connecting the flanges (4) are arranged at two ends of the flange spline shaft assembly (3);
the circumferential direction of the flange (4) and the circumferential direction of the flange (5) are provided with fixing holes with the same number and the same positions so as to realize the connection and fixation of the flange (4) and the flange (5) through the fixing holes;
the flange spline shaft assembly (3) comprises a flange spline shaft (31) and a flange spline shaft sleeve (32) which is connected with the flange spline shaft (31) in a matched mode, and the flange (5) is arranged at two ends, away from each other, of the flange spline shaft (31) and the flange spline shaft sleeve (32);
a first spline groove (33) is formed in one end, far away from the flange (5), of the flange spline shaft (31), the first spline groove (33) is formed in the circumferential direction of the flange spline shaft (31), the extending direction of the first spline groove (33) is the same as the length direction of the flange spline shaft (31), and a second spline groove (34) which is in fit connection with the first spline groove (33) is formed in the flange spline shaft sleeve (32);
the flange (5) is used for being attached to one end of the flange (4) and is provided with a protruding portion (35) protruding outwards so as to be attached to the inner wall of the flange (4).
2. Suspension device (1) according to claim 1, characterized in that the projection (35) is frustoconical tapering from approaching the flange (5) to moving away from the flange (5).
3. Screw feeder, characterized by comprising a plurality of blade shafts (8) and a suspension device (1) according to claim 1 or 2, adjacent blade shafts (8) being connected by means of the suspension device (1).
4. A screw feeder according to claim 3, further comprising a drive motor (6) for driving the vane shaft (8) to rotate the feed, the drive motor (6) being connected to the vane shaft (8) by a coupling (7).
5. Screw feeder according to claim 4, further comprising an upper housing (9) arranged above the blade shaft (8) for forming a sealed feed space for the blade shaft (8).
6. Screw feeder according to claim 5, characterized in that the upper housing (9) is provided with a manhole (10) for replacing the suspension device (1), and that it further comprises a sealing cover for sealing the manhole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910486628.XA CN110116884B (en) | 2019-06-05 | 2019-06-05 | Screw feeder and linkage thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910486628.XA CN110116884B (en) | 2019-06-05 | 2019-06-05 | Screw feeder and linkage thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110116884A CN110116884A (en) | 2019-08-13 |
| CN110116884B true CN110116884B (en) | 2024-02-27 |
Family
ID=67523805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910486628.XA Active CN110116884B (en) | 2019-06-05 | 2019-06-05 | Screw feeder and linkage thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110116884B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201748125U (en) * | 2009-12-28 | 2011-02-16 | 于占洋 | Hanger frame assembly |
| CN102661327A (en) * | 2012-05-12 | 2012-09-12 | 吉林大学 | Telescopic rolling ball spline type crossed shaft universal transmission device |
| CN203112018U (en) * | 2012-10-29 | 2013-08-07 | 北京中天金谷粮油工程技术有限公司 | Spiral conveyer |
| CN206126132U (en) * | 2016-09-30 | 2017-04-26 | 北京美达特科技发展有限公司 | Screw conveyer |
| CN210133608U (en) * | 2019-06-05 | 2020-03-10 | 山东钢铁股份有限公司 | Screw feeder and suspension device thereof |
-
2019
- 2019-06-05 CN CN201910486628.XA patent/CN110116884B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201748125U (en) * | 2009-12-28 | 2011-02-16 | 于占洋 | Hanger frame assembly |
| CN102661327A (en) * | 2012-05-12 | 2012-09-12 | 吉林大学 | Telescopic rolling ball spline type crossed shaft universal transmission device |
| CN203112018U (en) * | 2012-10-29 | 2013-08-07 | 北京中天金谷粮油工程技术有限公司 | Spiral conveyer |
| CN206126132U (en) * | 2016-09-30 | 2017-04-26 | 北京美达特科技发展有限公司 | Screw conveyer |
| CN210133608U (en) * | 2019-06-05 | 2020-03-10 | 山东钢铁股份有限公司 | Screw feeder and suspension device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110116884A (en) | 2019-08-13 |
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