CN113895691A - Nitrogen-filled dust-absorption quick switching device - Google Patents
Nitrogen-filled dust-absorption quick switching device Download PDFInfo
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- CN113895691A CN113895691A CN202111245529.6A CN202111245529A CN113895691A CN 113895691 A CN113895691 A CN 113895691A CN 202111245529 A CN202111245529 A CN 202111245529A CN 113895691 A CN113895691 A CN 113895691A
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- dust
- nitrogen
- absorption
- dust absorption
- soft joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B25/00—Packaging other articles presenting special problems
- B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
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Abstract
The utility model provides a fill nitrogen dust absorption quick switching control device, includes to fill nitrogen dust absorption switching main part, fills nitrogen pipeline, dust absorption hose, dust absorption pipe, dust absorption control valve, switches the main part through filling nitrogen dust absorption, realizes filling the quick switch-over of nitrogen and dust absorption, compares in prior art structurally simpler, and the device life-span is higher to it is rapider to switch operating condition. When equipment is in the non-unloading mode, fill nitrogen dust absorption and switch the main part and be in dust absorption operating condition, the dust absorption control valve is closed simultaneously, cuts off the suction of dust absorption pipe, thereby avoids appearing the food package and is held back by the suction and make the easy condition of pressing from both sides the powder of first package unloading. The second soft joints on the nitrogen-filled dust-absorption switching main body are connected with the dust-absorption pipes one by one through the dust-absorption hoses, and the installation position of the dust-absorption pipes is lower than that of the nitrogen-filled dust-absorption switching main body, so that floating powder is automatically brought into the dust-absorption pipes through exhausted air flow, and the condition of powder accumulation in the dust-absorption hoses can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of food packaging, in particular to a nitrogen-filled dust-absorption quick switching device.
Background
In order to prevent food from oxidative deterioration, the food is treated by antioxidants, but most of the antioxidants are artificially synthesized chemical substances and have certain toxicity to human bodies. Therefore, in the field of food packaging, in order to prevent food from being oxidized, nitrogen is filled in the food package to isolate the food from oxygen, so that the aim of preventing the food in the package from being oxidized is fulfilled.
The prior art discloses various nitrogen filling devices, such as Chinese utility model patent with publication number CN210284807U, which discloses an on-line filling nitrogen filling device, comprising a machine turntable, wherein a plurality of cup bearing holes are uniformly distributed on the machine turntable, the machine turntable is rotatably arranged on a frame, the frame is sequentially provided with a cup falling station, a blanking station, a dust absorption station, a film absorption station and a heat sealing station according to the packaging process flow around the machine turntable, the device also comprises a nitrogen lower clapboard, a nitrogen upper clapboard and a nitrogen pipe, the nitrogen lower clapboard is arranged at the upper end of the machine turntable, the nitrogen lower clapboard is provided with lower clapboard through holes corresponding to the cup bearing holes, the nitrogen upper clapboard is arranged at the upper end surface of the nitrogen lower clapboard, the nitrogen upper clapboard is provided with upper clapboard through holes corresponding to the cup falling station, the blanking station, the dust absorption station, the film absorption station and the heat sealing station, a middle gap is arranged between the nitrogen lower clapboard and the nitrogen upper clapboard, one end of the nitrogen pipe is communicated with the nitrogen distribution seat, the other end of the nitrogen pipe penetrates through the upper nitrogen partition plate to be connected with the middle gap, and the middle gap is communicated with the through hole of the lower partition plate.
For example, the chinese patent publication No. CN109051039A discloses a nitrogen charging system for packaging shipborne powder and granules and a method thereof, wherein the nitrogen charging system includes a valve port filling machine, a nitrogen charging system, an air pumping system and a control system; a nitrogen-filled sleeve is additionally arranged outside a material filling spiral sleeve of the valve port filling machine; the nitrogen charging system comprises a nitrogen charging pipe system, a nitrogen charging electromagnetic valve, a nitrogen pressure reducing valve and a nitrogen generator; one end of the nitrogen charging pipe system is communicated with the nitrogen charging sleeve, and the other end of the nitrogen charging pipe system is communicated with the nitrogen generator; the nitrogen charging electromagnetic valve and the nitrogen pressure reducing valve are arranged on a pipeline connecting the nitrogen charging piping system and the nitrogen generator; the air extraction system comprises an air extraction pipe system, an air extraction electromagnetic valve and an exhaust fan, wherein one end of the air extraction pipe system is communicated with the nitrogen filling sleeve, and the other end of the air extraction pipe system is connected with the exhaust fan; the air exhaust electromagnetic valve is arranged on a pipeline connected with the air exhaust pipe system and the exhaust fan; the control system is used for controlling the nitrogen generator, the nitrogen pressure reducing valve, the nitrogen filling electromagnetic valve and the air exhaust electromagnetic valve to work. Simple structure, nitrogen filling and material filling are synchronous, and efficiency is high.
In the prior art, nitrogen is filled into food packages through the nitrogen filling system and the dust collection system, and floating powder in the displaced gas is treated, but the prior art has the following defects:
1. the tee joint is matched with an electromagnetic valve to control the nitrogen charging and dust collection to react slowly;
2. under the state of no discharging, the empty packaging bag is easily sucked and held under the influence of dust absorption, so that the powder is easily clamped when the first bag is discharged.
3. The dust collection effect is affected by the powder accumulation problem in the dust collection hose.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a nitrogen charging and dust collecting quick switching device which can quickly switch nitrogen charging and dust collecting states and avoid the problems of powder clamping and powder accumulation.
In order to achieve the above object, the present invention is realized by the following technical solutions:
the utility model provides a fill nitrogen dust absorption quick auto-change over device, includes to fill nitrogen dust absorption switching main part, fills nitrogen pipeline, dust absorption hose, dust absorption pipe, dust absorption control valve, fill nitrogen pipeline and fill nitrogen dust absorption switching main part and be connected, the dust absorption pipe is connected to through the dust absorption hose and fills nitrogen dust absorption switching main part on, the dust absorption control valve sets up on the dust absorption pipe. The nitrogen-filled dust-absorption switching main body comprises a front fixing plate, a rear fixing plate, a sliding block, a spacer bush, a cylinder, a connecting block, a supporting frame, a first soft joint, a second soft joint and a third soft joint.
Further, the dust suction pipe is installed at a lower position than the dust suction switching body.
Furthermore, the front fixing plate is an L-shaped long plate and is provided with a first soft joint fixing hole and a third soft joint fixing hole, the rear fixing plate is an L-shaped long plate and is provided with a second soft joint fixing hole, the front fixing plate and the rear fixing plate are arranged together, and an elongated slot is formed between the two plates.
Furthermore, the sliding block is provided with a first channel and a second channel, is arranged in a long groove formed by the front fixing plate and the rear fixing plate, and can translate in the long groove along the direction of the long groove.
Furthermore, the spacer bush is made of wear-resistant materials and arranged on the sliding block, when the sliding block moves horizontally in the long groove, the sliding block is not in contact with the long groove, but the spacer bush is in contact with the long groove, the service life of the device is prolonged, the shaft sleeve is designed to be foolproof, and the shaft sleeve is additionally arranged at the upper left corner of the sliding block.
Furthermore, the connecting blocks are arranged on two sides of the sliding block, the supporting frames are arranged below two sides of the rear fixing plate, the number of the air cylinders is two, the cylinder body parts are arranged on two sides of the front fixing plate, the piston rod parts are connected with the connecting blocks on two sides, and the air cylinders are controlled through an electromagnetic valve.
Furthermore, the first soft joint is arranged on the first soft joint fixing hole, the second soft joint is arranged on the second soft joint fixing hole, the third soft joint is arranged on the third soft joint fixing hole, the first soft joint is connected with a nitrogen charging and dust collecting channel of the filling machine, the second soft joint is connected with the dust collecting channel, and the third soft joint is connected with a nitrogen charging pipeline.
By adopting the technical scheme, the invention has the following technical effects:
1. the nitrogen charging and dust collecting switching main body is used for realizing the quick switching of nitrogen charging and dust collecting, and the nitrogen charging and dust collecting work is carried out through the cooperation of the tee joint and the electromagnetic valve in the prior art.
2. When equipment is in the non-unloading mode, fill nitrogen dust absorption and switch the main part and be in dust absorption operating condition, the dust absorption control valve is closed simultaneously, cuts off the suction of dust absorption pipe, thereby avoids appearing the food package and is held back by the suction and make the easy condition of pressing from both sides the powder of first package unloading.
3. The second soft joints on the nitrogen-filled dust-absorption switching main body are connected with the dust-absorption pipes one by one through the dust-absorption hoses, and the installation position of the dust-absorption pipes is lower than that of the nitrogen-filled dust-absorption switching main body, so that floating powder is automatically brought into the dust-absorption pipes through exhausted air flow, and the condition of powder accumulation in the dust-absorption hoses can be effectively avoided.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a structural diagram of the nitrogen-charging dust-collecting switching main body according to the present invention;
FIG. 3 is a partial cross-sectional view of the nitrogen-filled dust-collecting switching body of the present invention;
FIG. 4 is a block diagram of the slider of the present invention;
FIG. 5 is a structural view of a front fixing plate according to the present invention;
FIG. 6 is a structural view of a fixed backplate according to the present invention;
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains. The terms "mounted," "connected," "secured," and "disposed" are to be construed broadly unless otherwise specifically stated or limited.
The utility model provides a fill nitrogen dust absorption quick switching control device, includes to fill nitrogen dust absorption switching main part 1, fills nitrogen pipeline 2, dust absorption hose 3, dust absorption pipe 4, dust absorption control valve 5, fill nitrogen pipeline 2 and fill nitrogen dust absorption switching main part 1 and be connected, dust absorption pipe 4 is connected to on filling nitrogen dust absorption switching main part 1 through dust absorption hose 3, dust absorption control valve 5 sets up on dust absorption pipe 4. The nitrogen charging dust collection switching main body 1 comprises a front fixing plate 11, a rear fixing plate 12, a sliding block 13, a spacer sleeve 14, a cylinder 15, a connecting block 16, a supporting frame 17, a first soft joint 181, a second soft joint 182 and a third soft joint 183. The front fixing plate 11 and the rear fixing plate 12 are connected to form a long groove therebetween, and the slider 13 is disposed in the long groove. The spacer 14 is arranged on the sliding block 13, the connecting block 16 is arranged on two sides of the sliding block 13, and the supporting frame 17 is arranged below two sides of the rear fixing plate 12. The cylinder body part of the air cylinder 15 is arranged at two sides of the front fixing plate 11, and the piston rod part is connected with the connecting blocks 16 at two sides. The slider 13 is provided with a first channel 131 and a second channel 132. The front fixing plate 11 is provided with a first soft joint fixing hole 111 and a third soft joint fixing hole 112, and the rear fixing plate 12 is provided with a second soft joint fixing hole 121. The first flexible joint 181 is disposed on the first flexible joint fixing hole 111, the second flexible joint 182 is disposed on the second flexible joint fixing hole 112, and the third flexible joint 183 is disposed on the third flexible joint fixing hole 121.
In the first embodiment, the first channel 131 and the second channel 132 provided on the sliding block 13 are uniformly distributed with 8 groups, and the two ends of the sliding block are provided with threaded holes, the connecting blocks 16 are connected to the threaded holes at the two ends through screws, the corresponding first soft joint fixing holes 111, second soft joint fixing holes 121, and third soft joint fixing holes 112 on the front fixing plate 11 and the rear fixing plate 12 also have 8 groups, corresponding to the first channel 131 and the second channel 132 one by one, the first soft joints 181 have 8, are provided on the first soft joint fixing holes 111 one by one, the second soft joints 182 have 8, are provided on the second soft joint fixing holes 121 one by one, the third soft joints 183 have 8, are provided on the third soft joint fixing holes 112 one by one, the first soft joints 181 are connected with the nitrogen-charging and dust-absorbing channels of the filling machine one by one through hoses, the second soft joint 182 is connected to a dust suction passage through a dust suction hose 3, the end of the dust suction passage is connected to a dust collector, and the third soft joint 183 is connected to a nitrogen charging pipe through a nitrogen charging pipe 2.
The specific working mode of the invention is as follows:
the electromagnetic valve controls the movement of the cylinders 15 at the two ends, when the slide block 13 is driven by the cylinders 15 to be positioned at the leftmost end, the nitrogen charging mode is adopted, and when the slide block 13 is driven by the cylinders 15 to be positioned at the rightmost end, the dust suction mode is adopted.
When a blanking button is clicked in the touch screen, the main electromagnetic valve for controlling nitrogen filling is automatically related in the equipment program to open, and nitrogen is kept in the nitrogen inlet pipeline until the third hose connector 183. At the same time, the dust suction control valve 5 is opened, so that the dust suction pipe 4 and the dust suction hose 3 are always in a dust suction state.
When the apparatus is in the nitrogen charging mode, the second channel 132 of the slide block 13 is communicated with the third hose connector 183 of the front fixing plate 11, and at this time, the nitrogen gas in the third hose connector 183 rapidly enters the nitrogen charging and dust collecting channel of the filling machine, and the bag is charged with nitrogen through the nitrogen charging and dust collecting channel. Meanwhile, the dust suction channel connected with the second soft joint 182 fixed on the rear fixing plate 12 is not communicated with the sliding block 13, so that dust cannot be sucked into the small bag, and the dust suction can be understood as being closed.
When the device is in a dust suction mode, the first channel 131 on the sliding block 13 is communicated with the second soft joint 182 on the rear fixing plate 12, the first soft joint 181 on the front fixing plate 11 and the nitrogen-filled dust suction channel of the filling machine, and as the second soft joint 182 is always in the dust suction mode, the floating powder in the bag can be sucked away by the dust collector through the communicated pipeline.
When the blanking button is closed in the touch screen, the main electromagnetic valve for nitrogen charging is automatically controlled in an associated manner in the equipment program to be closed, and meanwhile, the dust collection control valve 5 is closed. The nitrogen-filled dust absorption pipeline of the filling machine is directly communicated with the dust absorption pipe 4, the dust absorption valve 5 on the left side of the dust absorption pipe 4 communicated with the left side is closed, but the manual air door on the right side is opened, so that the whole pipeline is connected with the atmosphere and is in a normal pressure state, and the food package cannot be sucked and held.
By means of the fast switching between the nitrogen filling mode and the dust collecting mode, nitrogen is filled into food packages synchronously during each period of the equipment, the equipment is switched into the dust collecting mode rapidly during sealing and exhausting, floating powder is treated, one period is completed, the equipment is filled with the powder again and is switched into the nitrogen filling mode rapidly, and a new period is started.
In the second embodiment, on the basis of the first embodiment, the installation of the sliding block 13 is designed to be fool-proof, a group of spacers 14 is additionally arranged at the upper left corner of the sliding block 13, the group of spacers 14 do not directly participate in the operation of the device, when the device is in a nitrogen filling mode, the second channel 132 on the sliding block 13 needs to be communicated with the third flexible joint 183 on the front fixing plate 11, which requires that the sliding block 14 cannot be installed in the front-back direction incorrectly during installation, otherwise, the nitrogen cannot be filled, and the additionally arranged spacers 14 prevent the sliding block 13 from being smoothly installed into the groove if the sliding block 13 is installed reversely, thereby avoiding the possibility of reverse installation of the sliding block 13.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (10)
1. The utility model provides a fill nitrogen dust absorption quick switching device which characterized in that: switch main part (1), nitrogen charging pipeline (2), dust absorption hose (3), dust absorption pipe (4), dust absorption control valve (5) including filling nitrogen dust absorption, nitrogen charging pipeline (2) with fill nitrogen dust absorption and switch main part (1) and be connected, dust absorption pipe (4) are connected to through dust absorption hose (3) and fill nitrogen dust absorption and switch on main part (1) and the position of dust absorption pipe (4) is than filling nitrogen dust absorption and switch main part (1) low, dust absorption control valve (5) set up on dust absorption pipe (4).
2. The nitrogen-charging dust-suction fast switching device according to claim 1, characterized in that: the nitrogen-filled dust-absorption switching main body comprises a front fixing plate (11), a rear fixing plate (12), a sliding block (13), a spacer bush (14), a cylinder (15), a connecting block (16), a supporting frame (17), a first soft joint (181), a second soft joint (182) and a third soft joint (183).
3. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the front fixing plate (11) and the rear fixing plate (12) are connected, a long groove is formed between the front fixing plate and the rear fixing plate, and the sliding block (13) is arranged in the long groove and can move horizontally along the direction of the long groove.
4. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the spacer bush (14) is arranged on the sliding block (13).
5. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the connecting blocks (16) are arranged on two sides of the sliding block (13).
6. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the supporting frame (17) is arranged below two sides of the rear fixing plate (12).
7. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the cylinder body part of the air cylinder (15) is arranged on two sides of the front fixing plate (11), the piston rod part is connected with the connecting blocks (16) on the two sides, and the air cylinder (15) is controlled through an electromagnetic valve.
8. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the sliding block (13) is provided with a first channel (131) and a second channel (132).
9. The nitrogen-charging dust-suction fast switching device according to claim 2, characterized in that: the front fixing plate (11) is provided with a first soft joint fixing hole (111) and a third soft joint fixing hole (112), and the rear fixing plate (12) is provided with a second soft joint fixing hole (121).
10. The nitrogen-filled dust-absorption quick switching device according to the claim 2 is characterized in that: the first soft joint (181) is arranged on the first soft joint fixing hole (111), the second soft joint (182) is arranged on the second soft joint fixing hole (112), and the third soft joint (183) is arranged on the third soft joint fixing hole (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111245529.6A CN113895691A (en) | 2021-10-26 | 2021-10-26 | Nitrogen-filled dust-absorption quick switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111245529.6A CN113895691A (en) | 2021-10-26 | 2021-10-26 | Nitrogen-filled dust-absorption quick switching device |
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| Publication Number | Publication Date |
|---|---|
| CN113895691A true CN113895691A (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111245529.6A Pending CN113895691A (en) | 2021-10-26 | 2021-10-26 | Nitrogen-filled dust-absorption quick switching device |
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| CN (1) | CN113895691A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284179A (en) * | 1991-05-30 | 1994-02-08 | Hitachi, Ltd. | Valve and semiconductor fabricating equipment using the same |
| CN102261494A (en) * | 2011-05-03 | 2011-11-30 | 江苏省安全生产科学研究院 | Valve special for filling liquid chlorine |
| CN202349271U (en) * | 2011-11-11 | 2012-07-25 | 河北小旋风照明科技开发有限公司 | Quantitative charging valve |
| CN203439281U (en) * | 2013-08-29 | 2014-02-19 | 无锡市剑鹰机械有限公司 | Rationed packing scale |
| CN203948705U (en) * | 2014-05-15 | 2014-11-19 | 浙江何仕汽车工具有限公司 | Tyre detacher five-way air valve |
| CN206361192U (en) * | 2016-12-29 | 2017-07-28 | 青阳县侬本肥料有限公司 | A kind of integrated form Liquid Fertilizer liquid in-out automatic switching control equipment |
| CN208252822U (en) * | 2018-01-24 | 2018-12-18 | 张家港市凯尔圣仪表有限公司 | A kind of four-way adjusting switching valve |
| CN109051039A (en) * | 2018-08-31 | 2018-12-21 | 上海和创船舶工程有限公司 | A kind of boat-carrying powder-granule material is packaged Nitrogen filling system and its is packaged nitrogen filling method |
| CN208535273U (en) * | 2018-08-01 | 2019-02-22 | 蓝思精密(东莞)有限公司 | Ventilation hand-operated valve |
| CN213323957U (en) * | 2020-09-01 | 2021-06-01 | 保定市隆昌泰兴机械制造有限公司 | Multifunctional filling machine discharging nozzle |
-
2021
- 2021-10-26 CN CN202111245529.6A patent/CN113895691A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284179A (en) * | 1991-05-30 | 1994-02-08 | Hitachi, Ltd. | Valve and semiconductor fabricating equipment using the same |
| CN102261494A (en) * | 2011-05-03 | 2011-11-30 | 江苏省安全生产科学研究院 | Valve special for filling liquid chlorine |
| CN202349271U (en) * | 2011-11-11 | 2012-07-25 | 河北小旋风照明科技开发有限公司 | Quantitative charging valve |
| CN203439281U (en) * | 2013-08-29 | 2014-02-19 | 无锡市剑鹰机械有限公司 | Rationed packing scale |
| CN203948705U (en) * | 2014-05-15 | 2014-11-19 | 浙江何仕汽车工具有限公司 | Tyre detacher five-way air valve |
| CN206361192U (en) * | 2016-12-29 | 2017-07-28 | 青阳县侬本肥料有限公司 | A kind of integrated form Liquid Fertilizer liquid in-out automatic switching control equipment |
| CN208252822U (en) * | 2018-01-24 | 2018-12-18 | 张家港市凯尔圣仪表有限公司 | A kind of four-way adjusting switching valve |
| CN208535273U (en) * | 2018-08-01 | 2019-02-22 | 蓝思精密(东莞)有限公司 | Ventilation hand-operated valve |
| CN109051039A (en) * | 2018-08-31 | 2018-12-21 | 上海和创船舶工程有限公司 | A kind of boat-carrying powder-granule material is packaged Nitrogen filling system and its is packaged nitrogen filling method |
| CN213323957U (en) * | 2020-09-01 | 2021-06-01 | 保定市隆昌泰兴机械制造有限公司 | Multifunctional filling machine discharging nozzle |
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Application publication date: 20220107 |
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