CN117382949A - Pressure control system for powder split charging and powder split charging method - Google Patents
Pressure control system for powder split charging and powder split charging method Download PDFInfo
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- CN117382949A CN117382949A CN202311595174.2A CN202311595174A CN117382949A CN 117382949 A CN117382949 A CN 117382949A CN 202311595174 A CN202311595174 A CN 202311595174A CN 117382949 A CN117382949 A CN 117382949A
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- 239000000843 powder Substances 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 238000007664 blowing Methods 0.000 claims abstract description 20
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/16—Methods of, or means for, filling the material into the containers or receptacles by pneumatic means, e.g. by suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- 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
- B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Abstract
The invention discloses a pressure control system for powder split charging, which comprises a negative pressure generator, a positive pressure generator and a switching valve, wherein the negative pressure generator is connected with the switching valve through a first pipeline, the positive pressure generator is connected with the switching valve through a second pipeline, the switching valve is connected with a filling needle, a first switching valve for controlling on-off and a negative pressure reducing valve for reducing negative pressure during powder suction are arranged on the first pipeline, and a second switching valve for controlling on-off is arranged on the second pipeline. The invention discloses a powder split charging method. The invention has the advantages that the powder suction and delivery are respectively carried out by adopting different negative pressures, the powder blowing cleaning is carried out by adopting different positive pressures, and the pressure of the filling needle is reasonably controlled.
Description
Technical Field
The invention relates to the technical field of food and medicine packaging, in particular to a pressure control system for powder split charging and a powder split charging method.
Background
In the existing split charging system, negative pressure with the same size is used for sucking and delivering powder in the split charging process, positive pressure with the same size is used for blowing powder and cleaning, the pressure is not distinguished in different process steps, however, the negative pressure with the same pressure as the suction pressure is used for delivering powder, the negative pressure is smaller when the powder is delivered, the powder is leaked in the process, the product waste is caused, the loading precision is affected, the positive pressure is smaller when the positive pressure for cleaning filled with the blowing powder is used, the cleaning effect is not achieved, and the subsequent powder loading is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a pressure control system for powder split charging and a powder split charging method, wherein the powder suction and delivery adopts different negative pressures, the powder blowing cleaning adopts different positive pressures, and the filling needle pressure is reasonably controlled.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a pressure control system for powder partial shipment, includes negative pressure generator, malleation generator and switching valve, the negative pressure generator is connected with the switching valve through first pipeline, the malleation generator is connected with the switching valve through the second pipeline, the switching valve is connected with the filling needle, be equipped with the first ooff valve that is used for controlling the break-make and be used for reducing the negative pressure relief pressure valve when inhaling the powder on the first pipeline, be equipped with the second ooff valve that is used for controlling the break-make on the second pipeline.
As a further improvement of the above technical scheme:
the second pipeline is also provided with a pressure relief valve for relieving the pressure in the second pipeline, and the pressure relief valve is connected with the filling needle when the positive pressure is input and connected with the atmosphere when the positive pressure is not input.
The first pipeline comprises a large negative pressure branch and a small negative pressure branch, one ends of the large negative pressure branch and the small negative pressure branch are connected with the negative pressure generator, the other ends of the large negative pressure branch and the small negative pressure branch are connected with the switching valve after being converged and connected, the first switching valve is arranged on the large negative pressure branch, and the negative pressure reducing valve is arranged on the small negative pressure branch.
The small negative pressure branch is further provided with a first pressure sensor, the first pressure sensor is used for detecting the negative pressure in the small negative pressure branch, the large negative pressure branch is further provided with a first one-way valve, and the first one-way valve is arranged at the rear end of the first switch valve.
The second pipeline comprises a large positive pressure branch and a small positive pressure branch, one ends of the large positive pressure branch and the small positive pressure branch are connected with the positive pressure generator, the other ends of the large positive pressure branch and the small positive pressure branch are connected with the switching valve after being converged and connected, the second switching valve and the pressure relief valve are sequentially arranged on the large positive pressure branch, and the positive pressure relief valve is arranged on the small positive pressure branch.
The small positive pressure branch is also provided with a second pressure sensor, the second pressure sensor is used for detecting the positive pressure in the small positive pressure branch, the small positive pressure branch is also provided with a second one-way valve, and the second one-way valve is arranged at the rear end of the second switch valve.
The pressure relief valve comprises a valve body, a first interface, a second interface and a third interface are respectively arranged on the valve body, the first interface, the second interface and the third interface are respectively communicated with a large positive pressure branch, a small positive pressure branch and the atmosphere, an adjusting cavity is arranged in the valve body, a pressure adjusting plug is movably arranged in the adjusting cavity, an elastic piece is arranged between the pressure adjusting plug and the valve body, a pressure relief channel used for communicating the second interface and the third interface is arranged on the pressure adjusting plug, and the pressure adjusting plug moves to adjust the second interface to be communicated with the first interface or the pressure relief channel.
A filter is arranged between the switching valve and the filling needle.
A powder sub-packaging method, comprising the following steps:
s1, small negative pressure powder suction: the filling needle descends to the powder disc, the filling needle is communicated with the first pipeline, and small negative pressure is introduced into the first pipeline, so that the filling needle sucks powder from the powder disc;
s2, powder feeding under large negative pressure: after the powder suction of the filling needle is finished, introducing a larger negative pressure into the first pipeline, and moving the filling needle to the upper part of the bottle body;
s3, small positive pressure powder blowing: the filling needle descends into the bottle body, the filling needle is communicated with the second pipeline, and small positive pressure is introduced into the second pipeline, so that the filling needle blows powder into the bottle body, and sub-packaging is completed;
s4, cleaning with large positive pressure: after the split charging is finished, the filling needle is moved out of the bottle body, a large positive pressure is introduced into the second pipeline, residual powder in the filling needle is removed, and the filling needle is cleaned.
As a further improvement of the above technical scheme:
and the method further comprises the step S5 of releasing pressure: and (3) discharging the pressure in the second pipeline and repeating the steps S1 to S4.
Compared with the prior art, the invention has the beneficial effects that:
the pressure control system for powder split charging disclosed by the invention has the advantages that the negative pressure reducing valve is arranged on the first pipeline communicated with negative pressure, the negative pressure of the filling needle can be regulated, the positive pressure reducing valve is arranged on the second pipeline communicated with positive pressure, the positive pressure of the filling needle can be regulated, the partial pressure control of small negative pressure powder suction, large negative pressure powder feeding, small positive pressure powder blowing and large positive pressure cleaning is realized, the small negative pressure powder suction is stable, the powder can be tightly adsorbed during large negative pressure powder feeding, the powder waste is avoided, the loading accuracy is improved, the powder is prevented from reversely blowing to the bottle mouth of the bottle in a jet shape by the small positive pressure powder blowing, the pollution and the waste are caused, the large positive pressure cleaning can improve the cleaning effect, and the subsequent filling is facilitated.
According to the powder split charging method disclosed by the invention, the small negative pressure powder suction is stable, the powder can be tightly adsorbed during the large negative pressure powder feeding, the powder waste is avoided, the loading accuracy is improved, the powder is prevented from being reversely blown to the bottle mouth of the bottle body in a spray shape by blowing by the small positive pressure powder, the pollution and the waste are avoided, the cleaning effect can be improved by cleaning by the large positive pressure, and the subsequent filling is facilitated.
Drawings
FIG. 1 is a schematic flow chart of a powder split charging method of the invention.
Fig. 2 is a schematic diagram of the pressure control system for powder dispensing of the present invention prior to installation of a pressure relief valve.
Fig. 3 is a schematic view showing the structure of the pressure control system for powder sub-packaging after installing a pressure relief valve according to the present invention.
Fig. 4 is a schematic cross-sectional view of a pressure relief valve of a pressure control system for powder dispensing according to the present invention.
Fig. 5 is a schematic cross-sectional view showing the normal opening of the pressure relief valve in the pressure control system for powder dispensing according to the present invention.
Fig. 6 is a schematic cross-sectional view of the pressure relief valve of the pressure control system for powder dispensing according to the present invention.
The reference numerals in the drawings denote: 1. a negative pressure generator; 2. a positive pressure generator; 3. an adapter valve; 4. a first pipeline; 41. a first switching valve; 42. a negative pressure relief valve; 43. a large negative pressure branch; 44. a small negative pressure branch; 45. a first pressure sensor; 46. a first one-way valve; 5. a second pipeline; 51. a second switching valve; 52. a positive pressure relief valve; 53. a pressure relief valve; 531. a valve body; 532. a first interface; 533. a second interface; 534. a third interface; 535. a regulating chamber; 536. a pressure regulating plug; 537. an elastic member; 538. a pressure relief channel; 54. a large positive pressure branch; 55. a small positive pressure branch; 56. a second pressure sensor; 57. a second one-way valve; 6. filling needles; 7. a filter; 8. a powder tray; 9. and (3) a bottle body.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples of the specification.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Fig. 1 to 6 show an embodiment of the present invention, the pressure control system for powder sub-packaging includes a negative pressure generator 1, a positive pressure generator 2 and a transfer valve 3, the negative pressure generator 1 is connected with the transfer valve 3 through a first pipeline 4, the positive pressure generator 2 is connected with the transfer valve 3 through a second pipeline 5, the transfer valve 3 is connected with a filling needle 6, a first switch valve 41 for controlling on-off and a negative pressure reducing valve 42 for reducing negative pressure during powder suction are arranged on the first pipeline 4, a second switch valve 51 for controlling on-off and a positive pressure reducing valve 52 for reducing positive pressure during powder blowing and filling are arranged on the second pipeline 5.
The pressure control system for powder split charging is characterized in that firstly, a transfer valve 3 is connected with a first pipeline 4, a negative pressure generator 1 and a first switching valve 41 are opened, the negative pressure in the first pipeline 4 is in a relative small negative pressure state under the decompression action of a negative pressure reducing valve 42, and a filling needle 6 sucks powder from a powder disc 8 by using the small negative pressure; after the powder suction is finished, the negative pressure in the first pipeline 4 is in a relatively large negative pressure state, and the filling needle 6 is transported and moved to the position above the bottle body 9; then the switching valve 3 is switched to be connected with the second pipeline 5, the positive pressure generator 2 and the second switch valve 51 are opened, the positive pressure in the second pipeline 5 is in a relative small positive pressure state under the decompression action of the positive pressure reducing valve 52, and the powder in the filling needle 6 is blown into the bottle body 9 by the small positive pressure; after the powder blowing and filling are finished, the filling needle 6 moves away from the bottle 9, so that the positive pressure in the second pipeline 5 is in a relatively large positive pressure state, and the powder in the filling needle 6 is blown out by utilizing the large positive pressure to clean the filling needle 6.
This a pressure control system for powder partial shipment is equipped with negative pressure relief valve 42 on the first pipeline 4 of intercommunication negative pressure, can adjust the negative pressure size that lets in filling needle 6, is equipped with positive pressure relief valve 52 on the second pipeline 5 of intercommunication malleation, can adjust the malleation size that lets in filling needle 6, realizes little negative pressure and inhales powder, big negative pressure send the powder, little positive pressure blows powder, big positive pressure clear partial pressure control, little negative pressure is inhaled powder steadily, can tightly adsorb the powder when big negative pressure send the powder, avoid making the powder extravagant, improve the loading precision, little positive pressure blows the powder and avoids the powder to be the bottleneck of spraying form anti-flutter to bottle 9, causes pollution and waste, big positive pressure cleanness can improve clean effect, the follow-up filling of being convenient for.
Further, in this embodiment, the second pipeline 5 is further provided with a pressure relief valve 53 for relieving the pressure in the second pipeline 5, and the pressure relief valve 53 is connected to the filling needle 6 when the positive pressure is input, and is connected to the atmosphere when the positive pressure is not input. After the large positive pressure cleaning, the large positive pressure gas still remains in the second pipeline 5 before the next small positive pressure powder blowing filling, and the residual large positive pressure gas possibly is discharged from the filling needle 6 during the next powder blowing, so that the powder is sprayed out of the filling needle 6, reversely pours out of the bottle body 9, pollutes the bottle mouth and influences the filling quantity precision, and therefore, after the large positive pressure cleaning is finished, the pressure in the second pipeline 5 is removed by the pressure relief valve 53, and the influence on the next powder blowing filling is avoided.
Further, in this embodiment, the first pipeline 4 includes a large negative pressure branch 43 and a small negative pressure branch 44, one ends of the large negative pressure branch 43 and the small negative pressure branch 44 are connected to the negative pressure generator 1, the other ends are connected to the switching valve 3 after being converged, the first switching valve 41 is disposed on the large negative pressure branch 43, and the negative pressure reducing valve 42 is disposed on the small negative pressure branch 44. When the small negative pressure sucks powder, the first switch valve 41 on the large negative pressure branch 43 is closed, the negative pressure reducing valve 42 on the small negative pressure branch 44 is opened, and the small negative pressure enters the filling needle 6; when the powder is fed under the large negative pressure, the first switch valve 41 is opened to combine the negative pressure in the small negative pressure branch 44, so that the negative pressure entering the filling needle 6 is increased, and the powder is fed under the large negative pressure.
Further, in this embodiment, the small negative pressure branch 44 is further provided with a first pressure sensor 45, the first pressure sensor 45 is configured to detect the magnitude of the negative pressure in the small negative pressure branch 44, the large negative pressure branch 43 is further provided with a first check valve 46, and the first check valve 46 is disposed at the rear end of the first switch valve 41. The first pressure sensor 45 detects the negative pressure in the small negative pressure branch 44, so that the pressure is in a proper range when the small negative pressure sucks powder, and the first one-way valve 46 prevents the gas at the front end from flowing back into the filling needle 6, so that the stability of the negative pressure is ensured.
Further, in this embodiment, the second pipeline 5 includes a large positive pressure branch 54 and a small positive pressure branch 55, one ends of the large positive pressure branch 54 and the small positive pressure branch 55 are connected to the positive pressure generator 2, the other ends are connected to the transfer valve 3 after being converged, the second switching valve 51 and the pressure relief valve 53 are sequentially disposed on the large positive pressure branch 54, and the positive pressure relief valve 52 is disposed on the small positive pressure branch 55. When the powder is blown by the small positive pressure, the second switch valve 51 on the large positive pressure branch 54 is closed, the positive pressure reducing valve 52 on the small positive pressure branch 55 is opened, and the small positive pressure enters the filling needle 6; when the large positive pressure is cleaned, the second switch valve 51 is opened to combine the positive pressure in the small positive pressure branch 55, so that the positive pressure in the filling needle 6 is increased, and the large positive pressure is cleaned. After cleaning, before the powder is blown under the small positive pressure, after the second switch valve 51 is closed, no positive pressure enters the pressure relief valve 53, the pressure relief valve 53 is communicated with the atmosphere at the moment, and the positive pressure in the large positive pressure branch 54 is removed.
Further, in this embodiment, the small positive pressure branch 55 is further provided with a second pressure sensor 56, the second pressure sensor 56 is configured to detect the positive pressure in the small positive pressure branch 55, the small positive pressure branch 55 is further provided with a second check valve 57, and the second check valve 57 is disposed at the rear end of the second switch valve 51. The second pressure sensor 56 detects the positive pressure in the small positive pressure branch 55, so that the pressure is in a proper range when the small positive pressure blows powder, and the second one-way valve 57 prevents the gas at the rear end from flowing back into the small positive pressure branch 55 and prevents the carrying powder from blocking the small positive pressure branch 55.
Further, in this embodiment, the pressure relief valve 53 includes a valve body 531, a first interface 532, a second interface 533, and a third interface 534 are respectively provided on the valve body 531, the first interface 532, the second interface 533, and the third interface 534 are respectively communicated with the large positive pressure branch 54, the small positive pressure branch 55, and the atmosphere, an adjusting cavity 535 is provided in the valve body 531, a pressure adjusting plug 536 is movably provided in the adjusting cavity 535, an elastic member 537 is provided between the pressure adjusting plug 536 and the valve body 531, a pressure relief channel 538 for communicating the second interface 533 with the third interface 534 is provided on the pressure adjusting plug 536, and the pressure adjusting plug 536 moves to adjust the second interface 533 to be communicated with the first interface 532 or the pressure relief channel 538. As shown in fig. 5, when the second switch valve 51 is opened during cleaning with a large positive pressure, the first port 532 is normally connected to the positive pressure, the pressure regulating plug 536 is pushed to move in the regulating cavity 535, the elastic member 537 is compressed, so that the first port 532 is communicated with the second port 533, and at this time, the positive pressure smoothly passes through and merges into the filling needle 6 in the small positive pressure branch 55; as shown in fig. 6, after cleaning, the second switch valve 51 is closed, the pushing force disappears, the pressure adjusting plug 536 is reset under the action of the elastic force of the elastic member 537, so that the first port 532 is communicated with the third port 534 through the pressure relief channel 538, and finally, the air is introduced, and the pressure in the large positive pressure branch 54 is removed.
Further, in the present embodiment, a filter 7 is disposed between the switching valve 3 and the filling needle 6. And the pollutants in the gas are filtered, so that the powder in the filling needle 6 is prevented from being polluted.
Example two
The powder split charging method of the embodiment comprises the following steps:
s1, small negative pressure powder suction: the filling needle 6 descends to the powder disc 8, the filling needle 6 is communicated with the first pipeline 4, and small negative pressure is introduced into the first pipeline 4, so that the filling needle 6 sucks powder from the powder disc 8;
s2, powder feeding under large negative pressure: after the powder suction of the filling needle 6 is finished, a large negative pressure is introduced into the first pipeline 4, and the filling needle 6 moves to the upper part of the bottle body 9;
s3, small positive pressure powder blowing: the filling needle 6 descends into the bottle body 9, the filling needle 6 is communicated with the second pipeline 5, and small positive pressure is introduced into the second pipeline 5, so that the filling needle 6 blows powder into the bottle body 9, and split charging is completed;
s4, cleaning with large positive pressure: after the split charging is finished, the filling needle 6 moves to the outside of the bottle body 9, a large positive pressure is introduced into the second pipeline 5, the residual powder in the filling needle 6 is removed, and the filling needle 6 is cleaned.
The powder split charging method has the advantages that the powder is stably absorbed by the small negative pressure, the powder can be tightly absorbed when the powder is fed by the large negative pressure, the powder waste is avoided, the loading accuracy is improved, the powder is prevented from being reversely blown to the bottle mouth of the bottle body 9 in a spraying shape by the small positive pressure, the pollution and the waste are caused, the cleaning effect can be improved by cleaning by the large positive pressure, and the subsequent filling is convenient.
Further, in this embodiment, the method further includes step S5 of releasing pressure: the pressure in the second line 5 is removed and steps S1 to S4 are repeated. The problem that the large positive pressure gas still remains in the second pipeline 5 after the large positive pressure is cleaned and before the next small positive pressure powder blowing and filling is avoided, the residual large positive pressure gas is possibly discharged from the filling needle 6 during the next powder blowing, the powder is sprayed out of the filling needle 6, the powder is reversely blown out of the bottle body 9, the bottle mouth is polluted, the filling quantity precision is affected, and therefore the pressure in the second pipeline 5 is removed after the large positive pressure cleaning is finished, the next powder blowing and filling is avoided, and continuous split charging is realized.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (10)
1. A pressure control system for powder dispensing, characterized by: including negative pressure generator (1), positive pressure generator (2) and switching valve (3), negative pressure generator (1) are connected with switching valve (3) through first pipeline (4), positive pressure generator (2) are connected with switching valve (3) through second pipeline (5), switching valve (3) are connected with filling needle (6), be equipped with first switch valve (41) that are used for controlling the break-make and be used for reducing negative pressure relief valve (42) when inhaling the powder on first pipeline (4), be equipped with second switch valve (51) that are used for controlling the break-make and be used for reducing positive pressure relief valve (52) when blowing the powder filling on second pipeline (5).
2. The pressure control system for powder dispensing of claim 1, wherein: the second pipeline (5) is also provided with a pressure relief valve (53) for relieving the pressure in the second pipeline (5), and the pressure relief valve (53) is connected with the filling needle (6) when positive pressure is input and is connected with the atmosphere when no positive pressure is input.
3. The pressure control system for powder dispensing of claim 2, wherein: the first pipeline (4) comprises a large negative pressure branch (43) and a small negative pressure branch (44), one ends of the large negative pressure branch (43) and the small negative pressure branch (44) are connected with the negative pressure generator (1), the other ends of the large negative pressure branch and the small negative pressure branch are connected with the switching valve (3) after being converged and connected, the first switch valve (41) is arranged on the large negative pressure branch (43), and the negative pressure reducing valve (42) is arranged on the small negative pressure branch (44).
4. A pressure control system for powder dispensing as set forth in claim 3, wherein: the small negative pressure branch (44) is further provided with a first pressure sensor (45), the first pressure sensor (45) is used for detecting the negative pressure in the small negative pressure branch (44), the large negative pressure branch (43) is further provided with a first one-way valve (46), and the first one-way valve (46) is arranged at the rear end of the first switch valve (41).
5. The pressure control system for powder dispensing as claimed in any one of claims 1 to 4, wherein: the second pipeline (5) comprises a large positive pressure branch (54) and a small positive pressure branch (55), one ends of the large positive pressure branch (54) and the small positive pressure branch (55) are connected with the positive pressure generator (2), the other ends of the large positive pressure branch and the small positive pressure branch are connected with the switching valve (3) after being converged and connected, the second switching valve (51) and the pressure relief valve (53) are sequentially arranged on the large positive pressure branch (54), and the positive pressure relief valve (52) is arranged on the small positive pressure branch (55).
6. The pressure control system for powder dispensing of claim 5, wherein: the small positive pressure branch (55) is further provided with a second pressure sensor (56), the second pressure sensor (56) is used for detecting the positive pressure in the small positive pressure branch (55), the small positive pressure branch (55) is further provided with a second one-way valve (57), and the second one-way valve (57) is arranged at the rear end of the second switch valve (51).
7. The pressure control system for powder dispensing of claim 5, wherein: the pressure relief valve (53) comprises a valve body (531), be equipped with first interface (532), second interface (533) and third interface (534) on valve body (531) respectively, first interface (532), second interface (533) and third interface (534) respectively with big malleation branch road (54), little malleation branch road (55) and atmosphere intercommunication, be equipped with in valve body (531) and adjust chamber (535), be equipped with pressure regulation stopper (536) in adjusting chamber (535) movably, be equipped with elastic component (537) between pressure regulation stopper (536) and valve body (531), be equipped with pressure relief passageway (538) that are used for intercommunication second interface (533) and third interface (534) on pressure regulation stopper (536), pressure regulation stopper (536) remove in order to adjust second interface (533) and first interface (532) or pressure relief passageway (538) intercommunication.
8. The pressure control system for powder dispensing as claimed in any one of claims 1 to 4, wherein: a filter (7) is arranged between the switching valve (3) and the filling needle (6).
9. A powder sub-packaging method, which is characterized in that: the method comprises the following steps:
s1, small negative pressure powder suction: the filling needle (6) descends to the powder disc (8), the filling needle (6) is communicated with the first pipeline (4), and small negative pressure is introduced into the first pipeline (4) to enable the filling needle (6) to suck powder from the powder disc (8);
s2, powder feeding under large negative pressure: after the powder suction of the filling needle (6) is finished, introducing larger negative pressure into the first pipeline (4), and moving the filling needle (6) to the position above the bottle body (9);
s3, small positive pressure powder blowing: the filling needle (6) descends into the bottle body (9), the filling needle (6) is communicated with the second pipeline (5), and small positive pressure is introduced into the second pipeline (5) to enable the filling needle (6) to blow powder into the bottle body (9), so that split charging is completed;
s4, cleaning with large positive pressure: after the split charging is finished, the filling needle (6) moves out of the bottle body (9), a large positive pressure is introduced into the second pipeline (5), residual powder in the filling needle (6) is removed, and the filling needle (6) is cleaned.
10. The powder dispensing method of claim 9, wherein: and the method further comprises the step S5 of releasing pressure: and (3) discharging the pressure in the second pipeline (5), and repeating the steps S1 to S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311595174.2A CN117382949A (en) | 2023-11-27 | 2023-11-27 | Pressure control system for powder split charging and powder split charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311595174.2A CN117382949A (en) | 2023-11-27 | 2023-11-27 | Pressure control system for powder split charging and powder split charging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117382949A true CN117382949A (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311595174.2A Pending CN117382949A (en) | 2023-11-27 | 2023-11-27 | Pressure control system for powder split charging and powder split charging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117382949A (en) |
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2023
- 2023-11-27 CN CN202311595174.2A patent/CN117382949A/en active Pending
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