CN114771007A - Granular ammonium nitrate ton bag compression device and compression method - Google Patents
Granular ammonium nitrate ton bag compression device and compression method Download PDFInfo
- Publication number
- CN114771007A CN114771007A CN202210336194.7A CN202210336194A CN114771007A CN 114771007 A CN114771007 A CN 114771007A CN 202210336194 A CN202210336194 A CN 202210336194A CN 114771007 A CN114771007 A CN 114771007A
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- ton
- ton bag
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- position sensor
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- 230000006835 compression Effects 0.000 title claims abstract description 36
- 238000007906 compression Methods 0.000 title claims abstract description 36
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3057—Fluid-driven presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3003—Details
- B30B9/3007—Control arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
The invention discloses a compression device and a compression method for granular ammonium nitrate ton bags, and belongs to the technical field of ton bag processing. This ton bag compressor arrangement includes: the ton bag collecting box is used for collecting ton bags, and the upper side of the ton bag collecting box is provided with a collecting opening; the pushing and pressing part is used for pushing and pressing the ton bag to remove air in the ton bag, and comprises a first pushing and pressing mechanism and a second pushing and pressing mechanism, the first pushing and pressing mechanism pushes and presses the ton bag along the vertical direction, and the second pushing and pressing mechanism pushes and presses the ton bag along the horizontal direction. The invention realizes the exhaust compression of the granular ammonium nitrate ton bag, and is convenient for subsequent transportation and recovery.
Description
Technical Field
The invention relates to the field of ton bag treatment, in particular to a compression device and a compression method for a porous granular ammonium nitrate ton bag.
Background
The ton bag is a packaging form, is generally woven by polypropylene, is matched with a polyethylene inner bag when moisture resistance is required, and has different sizes according to loading raw materials and weight. The main component of the domestic ammonium nitrate fuel oil explosive is porous granular ammonium nitrate, porous granular ammonium nitrate ton bags are widely used in the civil explosive industry at present, one packaging bag is used for loading 1 ton of porous granular ammonium nitrate, the external dimension length and width are 1-1.1 m, and the height is about 1.7 m.
At present, a ton bag and inner bag mode is mostly used for packaging and transporting in the standby process of storing large quantities of porous granular ammonium nitrate, when the ammonium nitrate is used on site, a forklift is generally used for unpacking a ton bag to fork the ton bag to be higher than a discharging hopper, then a bag cutting tool is manually used for cutting the ton bag from the bottom of the ton bag, and the porous granular ammonium nitrate is made to fall into the hopper; and after unloading, stacking the empty ton bags nearby, and then transferring the empty ton bags by using a forklift. Porous grain dress ammonium nitrate ton bag need carry out recovery processing after broken bag is unloaded, because empty bag occupation space is big after unloading, still has a large amount of air in the bag when piling up, the transportation of being not convenient for, transfer process resource utilization is low.
Disclosure of Invention
The invention aims to provide a ton bag compressing device capable of compressing ton bags.
In order to solve the technical problems, the invention provides the following technical scheme:
a granular ammonium nitrate ton bag compressor arrangement, includes: the ton bag collecting box is used for collecting ton bags, and the upper side of the ton bag collecting box is provided with a collecting opening; the pushing and pressing part is used for pushing and pressing the ton bag to remove air in the ton bag and comprises a first pushing and pressing mechanism and a second pushing and pressing mechanism, the first pushing and pressing mechanism pushes and presses the ton bag in the vertical direction, and the second pushing and pressing mechanism pushes and presses the ton bag in the horizontal direction.
In some embodiments of the present invention, the first pushing mechanism is mounted on the upper side of the ton bag collecting box, and includes a first pushing plate located on the upper side of the collecting opening, and a first driving element for driving the first pushing plate, and the first driving element drives the first pushing plate to move in the vertical direction so as to compress the ton bag in the vertical direction.
In some embodiments of the present invention, the first driving member is a first cylinder, and a piston rod of the first cylinder is fixedly connected to a central position of the pressing plate.
In some embodiments of the present invention, the first pushing mechanism further includes a reinforcing support portion, which includes a fixed support seat and a sliding support rod slidably connected to the fixed support seat, and a lower end of the sliding support rod is fixed to the first pushing plate body.
In some embodiments of the invention, a baffle is arranged on the upper side of the ton bag collecting box, the baffle is arranged around the collecting opening, the fixed support seat is connected to the baffle and is spaced from the collecting opening by a set distance, and the first air cylinder is fixed on the fixed support seat.
In some embodiments of the present invention, the fixed support seat is provided with a through hole for penetrating the sliding support rod, the fixed support seat is provided with a teflon bushing at a position of the through hole, and the sliding support rod is matched with the teflon bushing.
In some embodiments of the present invention, the second pushing mechanism is mounted inside the ton bag collecting box, and includes a second pushing plate body disposed on two sides of the collecting opening and a second driving member for driving the second pushing plate body to move.
In some embodiments of the present invention, a first position sensing sensor and a second position sensing sensor are disposed in the ton bag collecting box, the first position sensing sensor is configured to detect a compression position of a ton bag in a vertical direction, the second position sensing sensor is configured to detect a compression position of a ton bag in a vertical direction, and the control unit controls the first driving member and the second driving member according to a detection signal of the first position sensing sensor; the control unit controls the second driving piece according to the detection signal of the second position induction sensor.
In some embodiments of the present invention, the apparatus further includes a first position sensor and a second position sensor for detecting a position of the first pushing plate, and a third position sensor and a fourth position sensor for detecting a position of the second pushing plate, the control unit controls the first driving member according to detection signals of the first position sensor and the second position sensor, and the control unit controls the second driving member according to detection signals of the third position sensor and the fourth position sensor.
The invention also provides a ton bag compression method for granular ammonium nitrate, which adopts a ton bag compression device and comprises the following steps:
when the ton bags reach a first set position or the ton bags reach a set number, controlling a first pushing and pressing mechanism to push and press the ton bags for a plurality of times, so that air in the ton bags is exhausted, and compressing the ton bags in the vertical direction;
when the ton bag reaches the second set position after the first pushing mechanism and the ton bag are separated, the first pushing mechanism is controlled to be away from the collecting opening, the second pushing mechanism is controlled to push the ton bag for a plurality of times, and compression of a plurality of ton bags in the horizontal direction is achieved.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
in the compression device for the granular ammonium nitrate ton bags, the ton bags are pushed and pressed in two directions by the pushing and pressing mechanism, so that air in the ton bags is exhausted to compress the ton bags, the ton bags compressed by the compression device occupy nine tenth of the space occupied by naturally stacked empty ton bags, the ton bags are convenient to transport and recycle, and a forklift can conveniently fork and carry the collected, compressed and bundled ton bags after the ton bags are pushed out.
Drawings
The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
fig. 1 is an assembly diagram of one embodiment of a ton-bag compression device for granular ammonium nitrate provided by the invention;
fig. 2 is a schematic structural view of an embodiment of the first pressing mechanism in the ton bag compressing device of the present invention;
fig. 3 is a schematic structural diagram of a first state of a granular ammonium nitrate ton-bag compression device provided by the invention;
FIG. 4 is an enlarged view of a portion of FIG. 3;
fig. 5 is a schematic structural diagram of a second state of the granular ammonium nitrate ton-bag compressing device of the invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 to 5, an embodiment of a ton bag compression device for ammonium nitrate granules (hereinafter referred to as "ton bag compression device") according to the present invention is used for pushing and pressing empty bags to remove air from the empty bags, so as to compress the ton bags, and after the compressed ton bags are bundled, a forklift can conveniently pick up and transport the ton bags.
The ton bag compressing device comprises a ton bag collecting box 31 and a pushing part, wherein the upper side of the ton bag collecting box 31 is provided with a collecting opening 31a used for being matched with the conveying part of the front side process, so that the ton bag slides into the ton bag collecting box 31 along the collecting opening 31 a. The pushing part comprises a first pushing mechanism pushing the ton bag along the vertical direction and a second pushing mechanism pushing the ton bag along the horizontal direction.
Ton bag compressor arrangement adopts the pushing and pressing mechanism of two directions to get rid of the air in with the compression ton bag in the ton bag, is convenient for in the subsequent handling to tying up and transporting of ton bag. Compared with the empty ton bags which are naturally stacked, the occupied space of the ton bags is reduced by nine ten percent, and the ton bags are convenient to transport and recycle.
In an alternative embodiment, the first pushing mechanism includes a first pushing plate 32 and a first driving member for driving the first pushing plate 32. Specifically, the first driving member is a first air cylinder 33 fixed on the supporting portion, a piston rod of the first air cylinder 33 is fixedly connected to a central position of the first pushing plate 32, and the first pushing plate 32 is enabled to push and press the ton bag located in the ton bag collecting box 31 along the vertical direction by controlling the first driving member, so that air in the ton bag is discharged, and compression of the ton bag along the vertical direction is achieved.
Specifically, since the size of the ton bag is large, in order to realize rapid compression of the ton bag, the size of the first pushing plate body 32 is generally large, and in order to improve the support of each part of the first pushing plate body 32 and the moving reliability of the first pushing plate body 32, as shown in fig. 2, the ton bag compression apparatus further includes a reinforcing support portion, the reinforcing support portion includes a fixed support seat 34 and a sliding support rod 35 slidably connected to the fixed support seat 34, and the lower end of the sliding support rod 35 is fixed to the first pushing plate body 32. More specifically, the first plate body 32 that bulldozes is the rectangular plate, the sliding support pole 35 sets up four, four sliding support poles 35 two bisymmetry connect in on the first plate body 32's that bulldozes the face to make the first atress uniformity that bulldozes each part of plate body 32 better, the first plate body 32's that bulldozes direction of movement can be injectd in the cooperation of sliding support pole 35 and fixed bolster 34, and then makes it along longitudinal movement, avoids first the rocking that bulldozes plate body 32.
In order to reduce the sliding friction between the sliding support rod 35 and the fixed support seat 34, a bushing 36 made of teflon is disposed on the fixed support seat 34, and the sliding support rod 35 slides in the bushing 36 under the driving of the first cylinder 33.
Specifically, the collecting box 31 is provided with a baffle 31b at the position of the collecting port 31a of the ton bag to limit the sliding position of the ton bag so as to enable the ton bag to directly enter the collecting box 31 along the collecting port 31a, and the fixed support seat 34 is installed on the baffle 31b and is spaced from the collecting port 31a by a set distance. Specifically, fixed support seat 34 includes the cross support frame 341 that extends the setting along the horizontal direction to and the installing support 342 that extends along vertical direction, installing support 342 pass through fastening components install in on the baffle 31b, cross support frame 341 and installing support 342 are square pipe and make, first cylinder 33 install in the crossing point position department of cross support frame 341, sliding support pole 35 then two bisymmetry is located first cylinder 33 both sides.
As shown in fig. 3 and 4, a through hole 34a for penetrating through the sliding support rod 35 is formed in the cross-shaped support frame 341, the aperture of the through hole 34a is larger than the outer diameter of the sliding support rod 35, the cross-shaped support frame 341 is located a bushing 36 is arranged at the position of the through hole, and the sliding support rod 35 is slidably connected to the bushing 36. The polytetrafluoroethylene lining 36 and the sliding support rod 35 support form oil-free lubrication, and the sliding friction is low. More specifically, two bushings 36 are provided, and the two bushings 36 are mounted on the upper and lower side surfaces of the cross-shaped supporting frame 341. Reliable support of the first pushing plate body 32 is achieved through the sliding support structure, and the problem that the edge of the first pushing plate body 32 is tilted is avoided.
Specifically, the second pushing mechanism is installed inside the ton bag collecting box, and in an alternative embodiment, the second pushing mechanism includes a second pushing plate 37 disposed on two sides of the collecting opening and a second driving member for driving the second pushing plate to move. Specifically, the second driving member is a second air cylinder 39, and the second pushing plate 37 is controlled to push the ton bag in the ton bag collecting box 31 in the horizontal direction by controlling the second driving member, so as to discharge the air in the ton bag, thereby compressing the ton bag in the horizontal direction.
Specifically, a first position sensing sensor 38a is arranged in the ton bag collecting box 31 and used for detecting the compression position of the ton bag in the vertical direction, and the control unit controls the first driving piece and the second driving piece according to a detection signal of the first position sensing sensor 38 a. Specifically, the first position sensing sensor 38a is an infrared sensor, when the ton bag is located at the initial position, the transmitting end and the receiving end of the infrared sensor are isolated by the ton bag, and the receiving end cannot receive the signal of the transmitting end; after ton bag compression to the settlement position, the signal of transmitting end is received to infrared sensor's receiving terminal, the first driving piece drive of control unit first bulldozes the plate body 32 and upwards removes to the collection mouth outside, simultaneously, the control unit control second driving piece starts to realize ton bag horizontal direction's compression.
A second position sensing sensor 38b is further arranged in the ton bag collecting box 31 for detecting the compression position of the ton bag in the horizontal direction, and the control unit controls the second driving piece according to the detection signal of the second position sensing sensor 38 b. Specifically, the second position sensing sensor 38b is an infrared sensor, when the ton bag is located at the initial position, the transmitting end and the receiving end of the infrared sensor are isolated by the ton bag, and the receiving end cannot receive the signal of the transmitting end; after the ton bag is compressed to the set position, the receiving end of the infrared sensor receives a signal of the transmitting end, and the control unit controls the second pushing mechanism to stop pushing.
Specifically, a first position sensor 33a and a second position sensor 33b are disposed on the first cylinder 33, a third position sensor and a fourth position sensor (not shown in the figure) are disposed on the hydraulic cylinder 37, the control unit controls the first cylinder 33 according to the detection signals of the first position sensor 33a and the second position sensor 33b, and the control unit controls the hydraulic cylinder 37 according to the detection signals of the third position sensor and the fourth position sensor. Specifically, the first position sensor 33a, the second position sensor 33b, the third position sensor, and the fourth position sensor are proximity switches; when the piston rod of the first air cylinder 33 moves downwards to a first position, the signal of the second position sensor 33b changes, and at the moment, the first driving piece is controlled to move the first pressing plate 32 in a direction away from the ton bag; when the piston rod of the first cylinder 33 moves upward to a second position, the signal of the first position sensor 33a changes, and at this time, the first driving member is controlled to move the first pressing plate 32 in a direction approaching the ton bag; similarly, the moving direction of the piston rod of the hydraulic cylinder 37 is controlled by the change of the detection signals of the third position sensor and the fourth position sensor.
The invention also provides a compression method adopting the granular ammonium nitrate ton bag compression device, which comprises the following steps:
s1, when the ton bags reach a first set position or the ton bags reach a set number, controlling a first pushing and pressing mechanism to push and press the ton bags for a plurality of times, so that air in the ton bags is exhausted, and compressing the ton bags in the vertical direction;
specifically, after the number of ton bags reaches a certain value or the ton bags are higher than the collecting opening, the first driving part is controlled to enable the first pushing plate body to push the ton bags, when the signal of the second position sensor 33b changes, the first driving part is controlled to enable the first pushing plate body 32 to move towards the direction away from the ton bags until the signal of the first position sensor 33a changes, the first driving part is controlled to enable the first pushing plate body 32 to move towards the direction close to the ton bags, the actions are repeated for a plurality of times, and the pushing times can be set according to the pushing conditions.
S2, when the ton bag reaches a second set position after the first pushing mechanism and the ton bag are separated, the first pushing mechanism is controlled to be away from the collecting opening, the second pushing mechanism is controlled to push the ton bag for a plurality of times, and compression of a plurality of ton bags in the horizontal direction is achieved.
Specifically, after the first pushing mechanism is separated from the ton bag, when the state of the first position sensing sensor is an on state, the ton bag is compressed in place in the vertical direction at this time, the control unit controls the second pushing mechanism to push the ton bag, a signal of the third position sensor changes, and at this time, the second driving piece is controlled to move the second pushing plate 37 in a direction away from the ton bag; when the signal of the fourth position sensor changes, the second driving piece is controlled to enable the second pushing plate body to move towards the direction close to the ton bags, and the actions are repeated for a plurality of times to realize the compression of a plurality of ton bags in the horizontal direction; and after the second pushing mechanism is separated from the ton bag, when the state of the second position induction sensor is a connection state, the ton bag is compressed in place in the horizontal direction.
And after the compressed ton bags are manually or automatically bundled, the ton bags are transferred to a set position through a transfer mechanism such as a crane.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a granule dress ammonium nitrate ton bag compressor arrangement which characterized in that includes:
the ton bag collecting box is used for collecting ton bags, and the upper side of the ton bag collecting box is provided with a collecting opening;
the pushing and pressing part is used for pushing and pressing the ton bag to remove air in the ton bag, and comprises a first pushing and pressing mechanism and a second pushing and pressing mechanism, the first pushing and pressing mechanism pushes and presses the ton bag along the vertical direction, and the second pushing and pressing mechanism pushes and presses the ton bag along the horizontal direction.
2. The ton bag compressing device for granular ammonium nitrate according to claim 1, wherein the first pushing mechanism is mounted on the upper side of the ton bag collecting box and comprises a first pushing plate body and a first driving member for driving the first pushing plate body, the first pushing plate body is located on the upper side of the collecting opening, and the first driving member drives the first pushing plate body to move in the vertical direction so as to compress the ton bag in the vertical direction.
3. The apparatus as claimed in claim 2, wherein the first driving member is a first cylinder, and a piston rod of the first cylinder is fixedly connected to a central position of the pushing plate.
4. The apparatus according to claim 3, wherein the first pressing mechanism further comprises a reinforcing support portion including a fixed support seat and a sliding support rod slidably connected to the fixed support seat, and a lower end of the sliding support rod is fixed to the first pressing plate.
5. The ton bag compressor device for granular ammonium nitrate according to claim 4, wherein a baffle is arranged on the upper side of the ton bag collecting box, the baffle is arranged around the collecting opening, the fixed support seat is connected to the baffle and is spaced from the collecting opening by a set distance, and the first air cylinder is fixed on the fixed support seat.
6. The granular ammonium nitrate ton-bagging compression device as claimed in claim 5, wherein the fixed support seat is provided with a through hole for penetrating the sliding support rod, the fixed support seat is provided with a polytetrafluoroethylene lining at the position of the through hole, and the sliding support rod is matched with the polytetrafluoroethylene lining.
7. The apparatus as claimed in claim 1, wherein the second pushing mechanism is mounted inside the ton bag collecting box and comprises a second pushing plate disposed opposite to the collecting port and a second driving member for driving the second pushing plate to move.
8. The apparatus as claimed in claim 1, wherein a first position sensor and a second position sensor are arranged in the ton bag collecting box, the first position sensor is used for detecting the compression position of the ton bag in the vertical direction, the second position sensor is used for detecting the compression position of the ton bag in the vertical direction, and the control unit controls the first driving member and the second driving member according to the detection signal of the first position sensor; the control unit controls the second driving piece according to the detection signal of the second position induction sensor.
9. The apparatus according to claim 8, further comprising a first position sensor and a second position sensor for detecting the position of said first pressing plate body, and a third position sensor and a fourth position sensor for detecting the position of said second pressing plate body, wherein said control unit controls said first driving member according to the detection signals of said first position sensor and said second position sensor, and said control unit controls said second driving member according to the detection signals of said third position sensor and said fourth position sensor.
10. A method for compressing ton bags for granular ammonium nitrate, which is characterized in that the device for compressing ton bags for granular ammonium nitrate according to any one of claims 1 to 9 is adopted, and comprises the following steps:
when the ton bags reach a first set position or the ton bags reach a set number, controlling the first pushing and pressing mechanism to push and press the ton bags for a plurality of times, so that air in the ton bags is exhausted, and compressing the ton bags in the vertical direction;
when the ton bag reaches the second set position after the first pushing mechanism and the ton bag are separated, the first pushing mechanism is controlled to be away from the collecting opening, the second pushing mechanism is controlled to push the ton bag for a plurality of times, and compression of a plurality of ton bags in the horizontal direction is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336194.7A CN114771007A (en) | 2022-03-31 | 2022-03-31 | Granular ammonium nitrate ton bag compression device and compression method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336194.7A CN114771007A (en) | 2022-03-31 | 2022-03-31 | Granular ammonium nitrate ton bag compression device and compression method |
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| Publication Number | Publication Date |
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| CN114771007A true CN114771007A (en) | 2022-07-22 |
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| CN202210336194.7A Pending CN114771007A (en) | 2022-03-31 | 2022-03-31 | Granular ammonium nitrate ton bag compression device and compression method |
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