CN211845826U - Aggregate temporary storage bin of concrete mixing plant - Google Patents
Aggregate temporary storage bin of concrete mixing plant Download PDFInfo
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- CN211845826U CN211845826U CN202020424567.2U CN202020424567U CN211845826U CN 211845826 U CN211845826 U CN 211845826U CN 202020424567 U CN202020424567 U CN 202020424567U CN 211845826 U CN211845826 U CN 211845826U
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- temporary storage
- guide
- guide rail
- mixing plant
- concrete mixing
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Abstract
The utility model belongs to the technical field of the concrete mixing plant technique and specifically relates to a concrete mixing plant's aggregate temporary storage storehouse is related to, its technical scheme main points are: including the storehouse body, the top of the storehouse body is the opening setting, and storehouse body bottom is provided with the guide fill, and the guide fill bottom is provided with the discharge gate, and storehouse body top is provided with two guide rails that are parallel to each other, and the guide rail sets up along the horizontal direction, and it is connected with the apron to slide on the guide rail, is provided with on the storehouse body to be used for driving the apron at the guide rail drive assembly who reciprocates to slide, and the apron is used for opening and close the open-top part of the storehouse body, the utility model discloses have and block the rainwater and get into the function in the aggregate temporary storage storehouse, can play the effect that.
Description
Technical Field
The utility model belongs to the technical field of the concrete mixing plant technique and specifically relates to a storehouse is kept in temporary storage of aggregate of concrete mixing plant is related to.
Background
A concrete mixing plant is a combined device for mixing concrete, also called a concrete pre-buried field, and is a building material manufacturing device mainly composed of a mixing host, a material weighing system, a material conveying system, a material storage system, a control system and other accessory facilities.
Referring to fig. 1, for aggregate temporary storage bin among the prior art, including the storehouse body 1 and set up in the guide hopper 2 of the storehouse body 1 bottom, the storehouse body 1 is the tube-shape setting, and guide hopper 2 is hourglass hopper-shaped setting, and guide hopper 2 and the storehouse body 1 intercommunication, the bottom of guide hopper 2 is provided with discharge gate 21, and the bottom of guide hopper 2 is provided with can be for discharge gate 21 carries out the striker plate 5 opened and close. The striker plate 5 is closed at the discharge hole 21, the aggregate can be stored in the bin body 1 at the moment, the striker plate 5 is immediately opened, and the aggregate drops to the outside of the bin body 1 from the bin body 1 through the discharge hole 21 under the action of gravity, so that the aggregate is put in and discharged.
However, the concrete mixing plant is bulky, so the concrete mixing plant is usually disposed outdoors, and when it rains, rainwater enters the inside of the aggregate temporary storage bin from the opening at the top of the aggregate temporary storage bin, and the rainwater is difficult to remove after entering the aggregate temporary storage bin, so that the rainwater remains in the aggregate temporary storage bin, thereby causing oxidation and corrosion inside the aggregate temporary storage bin, and the remaining rainwater can be bonded with the aggregates into blocks, thereby causing the blockage of the discharge port 21.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a storehouse is kept in to aggregate of concrete mixing plant, it has the function that blocks in the rainwater entering storehouse is kept in to aggregate, can play the effect that prevents rainwater corrosion aggregate storehouse inner wall and prevent that the aggregate from bonding the blocking temporarily.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a storehouse is kept in to aggregate of concrete mixing plant, includes the storehouse body, the top of the storehouse body is the opening setting, storehouse body bottom is provided with the guide fill, the bottom of guide fill is provided with the discharge gate, the top of the storehouse body is provided with two guide rails that are parallel to each other, the guide rail sets up along the horizontal direction, it is connected with the apron to slide on the guide rail, be provided with on the storehouse body and be used for the drive the apron is in reciprocal drive assembly who slides on the guide rail, the apron is used for opening and close the open-top department of the storehouse body.
By adopting the technical scheme, the cover plate slides on the slide rail in a reciprocating manner by starting the driving mechanism, when the cover plate slides to the top of the bin body, the opening at the top of the bin body is closed by the cover plate, and rainwater is blocked by the cover plate from entering the interior of the bin body, so that the effects of preventing the rainwater from corroding the inner wall of the aggregate temporary storage bin and preventing aggregates from being bonded into blocks are achieved; the apron starts once more, and the apron slides on the slide rail once more to the opening at storehouse body top is opened to the apron, and it is internal that the aggregate can enter into the storehouse from the top opening part of the storehouse body, realizes the storage and the ejection of compact of aggregate.
The utility model discloses further set up to: the driving assembly comprises a rack, a gear and a driving motor, the rack is fixed on the cover plate and parallel to the guide rail, the driving motor is arranged on the bin body, the gear is arranged on an output shaft of the driving motor, and the gear is meshed with the rack.
Through adopting above-mentioned technical scheme, through starting driving motor, driving motor drives the gear and rotates, under the effect of intermeshing between gear and rack, gear drive rack removes along the length direction of guide rail, and the rack and then drives the apron and realize the removal on the guide rail.
The utility model discloses further set up to: the driving motor is a servo motor.
Through adopting above-mentioned technical scheme, servo motor has the effect of just reversing, and servo motor drive gear realizes just reversing, and the rack realizes reciprocating motion under the effect of gear, so makes the apron realize reciprocating motion along the guide rail for the action of opening and close storehouse body top opening part can be realized to the apron.
The utility model discloses further set up to: the guide rail extends to the outside of the bin body, a support frame is arranged on the outer wall of the bin body, and the support frame is used for supporting the extending part of the guide rail.
Through adopting above-mentioned technical scheme, the guide rail extends to the storehouse external for the apron of connection on the guide rail that slides can slide to the storehouse external, so realize opening completely of storehouse body open-top portion, make the maximize of storehouse body open-top area, be favorable to aggregate feed efficiency's maximize, and the support frame plays the effect of supporting guide rail, when making the apron slide to the guide rail extension portion, the guide rail has stable support intensity.
The utility model discloses further set up to: the support frame includes horizontal pole, montant and down tube, the montant is fixed in on the lateral wall of the storehouse body, the one end of horizontal pole is fixed in on the montant, just the horizontal pole is fixed in the bottom of guide rail, the one end of down tube is fixed in on the montant, the other end of down tube is fixed in on the horizontal pole, montant and form the triangular frame form between the down tube.
Through adopting above-mentioned technical scheme, the horizontal pole, montant and the down tube that form the triangle-shaped frame form have triangular stability, and the montant is used for installing on the storehouse body, and the horizontal pole is used for installing on the guide rail, and the down tube plays the supporting role, so makes the support frame play the supporting role to the extension part of guide rail.
The utility model discloses further set up to: the top of apron is provided with the guide plate, the top surface of guide plate is the slope respectively downwards to both sides from the middle part and sets up.
Through adopting above-mentioned technical scheme, when the apron just started, the rainwater that gathers at the apron top was thrown away under the inertia effect and is fallen to the internal in storehouse, consequently sets up the guide plate at the apron top, and the guide plate stops the rainwater and drops and gather on the apron, and simultaneously, the inclined surface of guide plate plays the water conservancy diversion effect to the rainwater for the rainwater that drops to on the guide plate flows respectively to the both sides of the storehouse body, has reduced the gathering of rainwater on the guide plate.
The utility model discloses further set up to: the material guide hopper is provided with a driving cylinder, the driving cylinder is provided with a material baffle plate, the material baffle plate is movably inserted on the material guide hopper, and the material baffle plate is used for opening and closing the discharge hole.
Through adopting above-mentioned technical scheme, drive actuating cylinder through the start-up, drive actuating cylinder and drive the striker plate motion for the discharge gate is opened or is closed for the guide fill, realizes storing and the unloading to the aggregate in the storehouse body.
The utility model discloses further set up to: the top of the bin body is fixedly connected with a limiting plate, and when the cover plate is closed at the opening at the top of the bin body, the cover plate is abutted to the limiting plate.
Through adopting above-mentioned technical scheme, the limiting plate plays limiting displacement to the gliding motion of apron for the apron can accurately be closed in the top opening part of the storehouse body.
The utility model discloses further set up to: the limiting plate is provided with a rubber pad, and the rubber pad is located between the limiting plate and the cover plate.
Through adopting above-mentioned technical scheme, when apron butt to limiting plate, the rubber pad plays the cushioning effect, carries out spacing back to the apron at the limiting plate many times, and the rubber pad has reduced the mechanical fatigue damage of limiting plate, has prolonged the life of limiting plate.
To sum up, the utility model discloses a beneficial technological effect does:
1. by starting the driving mechanism, the cover plate slides on the slide rail in a reciprocating manner and closes the opening at the top of the bin body, and the cover plate prevents rainwater from entering the interior of the bin body, so that the effects of preventing the rainwater from corroding the inner wall of the aggregate temporary storage bin and preventing aggregates from being bonded into blocks are achieved; the cover plate is started again, the cover plate slides on the slide rail again, the opening at the top of the bin body is opened by the cover plate, and aggregate can enter the bin body from the opening at the top of the bin body, so that the storage and the discharge of the aggregate are realized;
2. the support frame has a support function on the guide rail, so that when the cover plate slides on the guide rail, the guide rail has good stress strength;
3. the limiting plate plays a limiting role in the sliding motion of the cover plate, so that the cover plate can be accurately closed at the opening at the top of the bin body, the rubber pad plays a buffering role, the rubber pad reduces mechanical fatigue damage of the limiting plate after the limiting plate is used for limiting the cover plate for multiple times, and the service life of the limiting plate is prolonged.
Drawings
FIG. 1 is a schematic structural view of an aggregate temporary storage bin in the prior art;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic structural diagram of another view angle according to an embodiment of the present invention;
fig. 5 is an enlarged view of a portion B in fig. 4.
In the figure, 1, a cabin body; 101. a side plate; 2. a material guide hopper; 21. a discharge port; 3. a mounting frame; 31. a first support bar; 32. a second support bar; 4. a driving cylinder; 5. a striker plate; 6. inserting holes; 7. a guide rail; 71. a base; 72. a T-shaped projection; 8. a support frame; 81. a cross bar; 82. a vertical rod; 83. a diagonal bar; 9. a cover plate; 91. a T-shaped groove; 10. a baffle; 11. a drive assembly; 111. a rack; 112. a gear; 113. a drive motor; 12. a yielding groove; 13. a limiting plate; 14. and (7) a rubber pad.
Detailed Description
Referring to fig. 2, for the utility model discloses a concrete mixing plant's aggregate temporary storage storehouse, including the storehouse body 1, the storehouse body 1 includes four curb plates 101 end to end in proper order, and curb plate 101 sets up along vertical direction, so make the storehouse body 1 be the top and the bottom of the tube-shape and the storehouse body 1 all be the opening setting, and the welding of the 1 bottom of the storehouse body has guide hopper 2, and guide hopper 2's top lid fits the opening part that is located the 1 bottom of the storehouse body, and guide hopper 2 communicates with storehouse body 1 is inside, and guide hopper 2 is and leaks hopper-shaped setting. In addition, a discharge port 21 is arranged at the bottom of the material guide hopper 2, the discharge port 21 is used for providing an outlet for discharging aggregate, an installation frame 3 is installed on the outer wall of the material guide hopper 2, specifically, the installation frame 3 comprises two first support rods 31 and a second support rod 32 which are all arranged along the horizontal direction, the two first support rods 31 are parallel to each other, one ends of the two first support rods 31 are all welded on the side wall of the material guide hopper 2, two ends of the second support rod 32 are respectively welded on one ends of the two first support rods 31 far away from the material guide hopper 2, a driving cylinder 4 is installed on the second support rod 32, a piston rod of the driving cylinder 4 penetrates through the second support rod 32 along the horizontal direction, the end part of the piston rod of the driving cylinder 4 faces the material guide hopper 2, a material blocking plate 5 is welded on the piston rod of the driving cylinder 4, the material blocking plate 5 is arranged along the horizontal direction, an, striker plate 5 passes through the activity of spliced eye 6 and pegs graft on guide fill 2 to the face area of striker plate 5 is greater than the open area of discharge gate 21, drives actuating cylinder 4 through the start-up, makes striker plate 5 pull plug-in connection on guide fill 2 reciprocal. When the striker plate 5 is inserted into the material guide hopper 2, the striker plate 5 covers the material outlet 21, the aggregate can be stored in the bin body 1 and the material guide hopper 2, when the striker plate 5 is pulled out relative to the material guide hopper 2, the material outlet 21 is opened, the aggregate in the bin body 1 and the material guide hopper 2 can be discharged from the material outlet 21, and the material outlet 21 is opened and closed under the action of the driving cylinder 4 by the striker plate 5.
Referring to fig. 2 and 3, storehouse body 1 top is provided with two guide rails 7 that are parallel to each other, two guide rails 7 all set up along the horizontal direction, wherein, guide rail 7 is including the base 71 that is the cuboid form setting and the T style of calligraphy lug 72 that is located the base 71 top, integrated into one piece between T style of calligraphy lug 72 and the base 71, the bottom of two base 71 welds respectively in the top of two blocks of curb plates 101, the one end of two guide rails 7 all extends to the outside of the storehouse body 1, the part that the storehouse body 1 extends to the outside of storehouse body 1 here is defined as epitaxial portion, be provided with support frame 8 on the outer wall of storehouse body 1, support frame 8 is used for the epitaxial portion of support rail 7 for the storehouse body 1, specifically, support frame 8 includes horizontal pole 81, montant 82 and down tube 83, horizontal direction setting is followed to horizontal pole 81, montant 82. The vertical rod 82 is arranged on the side plate 101 of the bin body 1, the vertical rod 82 can be fixed on the side plate 101 of the bin body 1 in a welding mode or a screw fixing mode, in the embodiment, the vertical rod 82 is welded on the side plate 101 of the bin body 1; horizontal pole 81's one end welds in montant 82's top, and horizontal pole 81 is fixed in on guide rail 7's base 71, wherein, horizontal pole 81 can be fixed in on guide rail 7 through the mode of fix with screw or welded mode, in this embodiment, horizontal pole 81 welds on guide rail 7's base 71, the one end of down tube 83 welds in montant 82's bottom, the other end of down tube 83 welds in the one end that montant 82 was kept away from to horizontal pole 81, form the triangular frame form between montant 82 and the down tube 83, so make support frame 8 provide the holding power to guide rail 7's extension part, and then make guide rail 7's extension part have better bearing strength, difficult production bending deformation when bearing the heavy object.
Referring to fig. 2 and 3, the guide rail 7 is connected with apron 9 in a sliding manner, apron 9 sets up and apron 9 is rectangular plate-like along the horizontal direction, apron 9 is used for opening and close the open-top of the storehouse body 1, wherein, the face area of apron 9 is greater than the open-top area of the storehouse body 1, and the bottom surface outside-in of apron 9 caves in and forms T style of calligraphy recess 91, T style of calligraphy lug 72 slides the butt in T style of calligraphy recess 91, so realize sliding between apron 9 and the guide rail 7, when apron 9 slides to the storehouse body 1 top, the open-top of the storehouse body 1 is closed to apron 9, apron 9 blocks that the rainwater gets into the storehouse body 1 inside, apron 9 slides towards storehouse body 1 outside, the opening at apron 9 will storehouse body 1 top is opened, the aggregate can get into the storehouse body 1 from the.
Referring to fig. 2, the top welding of apron 9 has guide plate 10, and guide plate 10 is rectangular plate-like, and the upper surface of guide plate 10 is the slope from the middle part respectively to both sides and sets up downwards, and the inclined surface of guide plate 10 plays the water conservancy diversion effect to the rainwater for the rainwater that drops to on the guide plate 10 flows respectively to the both sides of storehouse body 1, has reduced the gathering of rainwater on guide plate 10.
Referring to fig. 2, 1 top in the storehouse body is provided with limiting plate 13, limiting plate 13 sets up along vertical direction, limiting plate 13 is located the one side curb plate 101 relative with 8 place curb plates 101 of support frame, the bottom of limiting plate 13 welds in the top of the curb plate 101 of the storehouse body 1, apron 9 slides on guide rail 7, when apron 9 is closed in the top opening part of the storehouse body 1, one side of apron 9 and limiting plate 13's lateral wall butt, so realize the mobile location of apron 9, make apron 9 can accurately close in the top opening part of the storehouse body 1.
Referring to fig. 2, a rubber pad 14 is arranged on the surface of one side of the limiting plate 13 facing the cover plate 9 through glue adhesion, the rubber pad 14 is located between the limiting plate 13 and the cover plate 9, the rubber pad 14 plays a role in buffering, and after the limiting plate 13 abuts and is limited on the cover plate 9 for multiple times, the rubber pad 14 reduces mechanical fatigue damage of the limiting plate 13 and prolongs the service life of the limiting plate 13.
Referring to fig. 4 and 5, the bin body 1 is provided with a driving assembly 11 for driving the cover plate 9 to slide on the guide rail 7 in a reciprocating manner, so as to open and close the opening at the top of the bin body 1, specifically, the driving assembly 11 comprises a rack 111, a gear 112 and a driving motor 113, the rack 111 is welded at the bottom of the cover plate 9, the rack 111 is parallel to the guide rail 7, a abdicating slot 12 for the rack 111 to pass is formed in a side plate 101 of the bin body 1, the driving motor 113 is preferably a servo motor with a forward and reverse rotation function, the servo motor is installed on the side plate 101 of the bin body 1, the gear 112 is installed on an output shaft of the driving motor 113 through a flat key, and the gear 112. By starting the servo motor, the servo motor drives the gear 112 to rotate, under the action of mutual meshing between the gear 112 and the rack 111, the rack 111 is driven by the gear 112 to reciprocate along the length direction of the guide rail 7, and the rack 111 further drives the cover plate 9 to reciprocate on the guide rail 7.
The implementation principle of the embodiment is as follows: when rainwater needs to be prevented from entering the bin body 1, firstly, a servo motor is started, the servo motor drives a gear 112 to rotate, the gear 112 drives a rack 111 to drive a cover plate 9 to slide on a guide rail 7 until the cover plate 9 abuts against a rubber pad 14 of a limiting plate 13, at the moment, the cover plate 9 covers an opening at the top of the bin body 1, rainwater falls on a guide plate 10 at the top of the cover plate 9, the rainwater is guided to two sides of the bin body 1 under the action of a top inclined plane of the guide plate 10, and the guide plate 10 prevents the rainwater from entering the bin body 1; after stopping rain, when needing to empty the aggregate to the storehouse body 1 in, the servo motor is started again, and servo motor drive gear 112 rotates, and gear 112 drives rack 111 and drives apron 9 and slide on guide rail 7, moves to the epitaxial part of guide rail 7 until apron 9, and the top opening part of storehouse body 1 is opened, and the aggregate can be followed the top opening part of storehouse body 1 and emptyd to storehouse body 1 in and store and the ejection of compact.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a concrete mixing plant's aggregate temporary storage storehouse, includes the storehouse body (1), the top of the storehouse body (1) is the opening setting, the bottom of the storehouse body (1) is provided with guide hopper (2), the bottom of guide hopper (2) is provided with discharge gate (21), its characterized in that: the bin body (1) top is provided with two guide rails (7) that are parallel to each other, the guide rail (7) sets up along the horizontal direction, it is connected with apron (9) to slide on guide rail (7), be provided with on the bin body (1) and be used for the drive apron (9) are in reciprocating sliding's drive assembly (11) on guide rail (7), apron (9) are used for opening and close the open-top department of the bin body (1).
2. The aggregate temporary storage bin of the concrete mixing plant according to claim 1, characterized in that: the driving assembly (11) comprises a rack (111), a gear (112) and a driving motor (113), the rack (111) is fixed on the cover plate (9), the rack (111) is parallel to the guide rail (7), the driving motor (113) is arranged on the bin body (1), the gear (112) is arranged on an output shaft of the driving motor (113), and the gear (112) is meshed with the rack (111).
3. The aggregate temporary storage bin of the concrete mixing plant according to claim 2, characterized in that: the driving motor (113) is a servo motor.
4. The aggregate temporary storage bin of the concrete mixing plant according to claim 1, characterized in that: the guide rail (7) extends to the outside of the bin body (1), a support frame (8) is arranged on the outer wall of the bin body (1), and the support frame (8) is used for supporting the extending part of the guide rail (7).
5. The aggregate temporary storage bin of the concrete mixing plant according to claim 4, characterized in that: support frame (8) include horizontal pole (81), montant (82) and down tube (83), montant (82) are fixed in on the lateral wall of the storehouse body (1), the one end of horizontal pole (81) is fixed in on montant (82), just horizontal pole (81) are fixed in the bottom of guide rail (7), the one end of down tube (83) is fixed in on montant (82), the other end of down tube (83) is fixed in on horizontal pole (81), montant (82) and form the triangular frame form between down tube (83).
6. The aggregate temporary storage bin of the concrete mixing plant according to claim 1, characterized in that: the top of apron (9) is provided with guide plate (10), the top surface of guide plate (10) is the slope respectively downwards to both sides from the middle part and sets up.
7. The aggregate temporary storage bin of the concrete mixing plant according to claim 1, characterized in that: the material guide hopper is characterized in that a driving cylinder (4) is arranged on the material guide hopper (2), a material baffle plate (5) is arranged on the driving cylinder (4), the material baffle plate (5) is movably inserted into the material guide hopper (2), and the material baffle plate (5) is used for opening and closing the material outlet (21).
8. The aggregate temporary storage bin of the concrete mixing plant according to claim 1, characterized in that: the top of the bin body (1) is fixedly connected with a limiting plate (13), and when the cover plate (9) is closed at the opening at the top of the bin body (1), the cover plate (9) is abutted to the limiting plate (13).
9. The aggregate temporary storage bin of the concrete mixing plant according to claim 8, characterized in that: the limiting plate (13) is provided with a rubber pad (14), and the rubber pad (14) is located between the limiting plate (13) and the cover plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020424567.2U CN211845826U (en) | 2020-03-28 | 2020-03-28 | Aggregate temporary storage bin of concrete mixing plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020424567.2U CN211845826U (en) | 2020-03-28 | 2020-03-28 | Aggregate temporary storage bin of concrete mixing plant |
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| Publication Number | Publication Date |
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| CN211845826U true CN211845826U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020424567.2U Expired - Fee Related CN211845826U (en) | 2020-03-28 | 2020-03-28 | Aggregate temporary storage bin of concrete mixing plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417482A (en) * | 2021-07-16 | 2021-09-21 | 东莞市建工集团有限公司 | Energy-saving concrete pouring and curing device and method |
| CN113879718A (en) * | 2021-10-27 | 2022-01-04 | 武汉理工大学 | Bulk container with novel opening and closing system |
| CN115072419A (en) * | 2022-08-22 | 2022-09-20 | 山东金缘生物科技有限公司 | Furfural sediment storage bin |
| CN115091618A (en) * | 2022-07-21 | 2022-09-23 | 山推建友机械股份有限公司 | Dustproof device for mixing station |
-
2020
- 2020-03-28 CN CN202020424567.2U patent/CN211845826U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417482A (en) * | 2021-07-16 | 2021-09-21 | 东莞市建工集团有限公司 | Energy-saving concrete pouring and curing device and method |
| CN113879718A (en) * | 2021-10-27 | 2022-01-04 | 武汉理工大学 | Bulk container with novel opening and closing system |
| CN113879718B (en) * | 2021-10-27 | 2023-03-10 | 武汉理工大学 | Bulk container with novel opening and closing system |
| CN115091618A (en) * | 2022-07-21 | 2022-09-23 | 山推建友机械股份有限公司 | Dustproof device for mixing station |
| CN115091618B (en) * | 2022-07-21 | 2024-03-22 | 山推建友机械股份有限公司 | Dustproof device for mixing station |
| CN115072419A (en) * | 2022-08-22 | 2022-09-20 | 山东金缘生物科技有限公司 | Furfural sediment storage bin |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 Termination date: 20210328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |