CN112874872A - Vacuumizing and nitrogen filling mechanism in rotary vacuum nitrogen filling machine - Google Patents
Vacuumizing and nitrogen filling mechanism in rotary vacuum nitrogen filling machine Download PDFInfo
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- CN112874872A CN112874872A CN202110259913.5A CN202110259913A CN112874872A CN 112874872 A CN112874872 A CN 112874872A CN 202110259913 A CN202110259913 A CN 202110259913A CN 112874872 A CN112874872 A CN 112874872A
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- 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
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
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Abstract
The invention discloses a vacuumizing and nitrogen-charging mechanism in a rotary vacuum nitrogen filling machine, which comprises a ring seat, wherein a vacuum cavity is arranged in the ring seat, each sealing sleeve is respectively communicated with the vacuum cavity through a vacuumizing passage with a vacuum valve, the vacuum valve is controlled by a vacuum valve driving mechanism, a hollow vacuum tube is movably supported in a main shaft, a first rotary joint is arranged at the lower end of the vacuum tube, and the upper end of the vacuum tube is communicated with the vacuum cavity; the inside nitrogen chamber that is equipped with of ring seat, every seal cover is respectively through the area fill nitrogen passageway intercommunication nitrogen chamber that fills the nitrogen valve, fill the nitrogen valve by filling nitrogen valve actuating mechanism control, be fixed with the connecting seat at the main shaft top, be equipped with into nitrogen mouth on the connecting seat, go out the nitrogen mouth and communicate into the nitrogen inlet channel of nitrogen mouth and nitrogen outlet, the outside cover of connecting seat is equipped with can be with advancing the second rotary joint that nitrogen mouth and nitrogen filling machine communicate, it communicates with each other through the nitrogen gas chamber import of nitrogen gas connecting pipe with ring seat lateral wall to go out the nitrogen mouth. The invention has the advantages of high nitrogen charging efficiency, high nitrogen utilization rate and small nitrogen consumption.
Description
Technical Field
The invention relates to the technical field of food nitrogen filling equipment, in particular to a vacuumizing and nitrogen filling mechanism in a rotary vacuum nitrogen filling machine.
Background
The potato chips are a very popular snack food at present and are generally canned in a cylinder. In the packaging and production process of the potato chips, before the sealing of the potato chip cylinder filled with the potato chips, protective gas such as nitrogen is generally filled into the potato chip cylinder to ensure the storage quality of the sealed food such as the potato chips. At present, an air charging chamber is generally adopted to charge nitrogen into a potato chip barrel, the air charging chamber is a relatively closed space, a nitrogen charging machine which discharges nitrogen into the air charging chamber is arranged in the air charging chamber, and after the potato chip barrel enters the air charging chamber, the potato chip barrel can be filled with the nitrogen in the air charging chamber in a non-targeted manner. Although the plenum chamber can achieve the purpose of nitrogen charging, the following disadvantages still exist: (1) the plenum chamber has a complex structure and high price, nitrogen is continuously opened in the use process of the plenum chamber, and no pertinence exists when the nitrogen is filled, so that the nitrogen consumption is high, the utilization rate of the nitrogen is low, and the use cost of enterprises is increased; (2) the residual oxygen content in the filled potato chip cylinder is high, thereby reducing the anti-oxidation effect on sealed foods such as potato chips.
At present, people design a rotary vacuum nitrogen filling machine, and the aims of reducing nitrogen gas consumption, improving nitrogen gas utilization rate, improving nitrogen filling effect, reducing residual oxygen amount in filled potato chip cylinders and improving anti-oxidation effect are achieved by purposefully vacuumizing and filling nitrogen into single potato chip cylinders. The structure of the rotary vacuum nitrogen filling machine comprises: the potato chip packaging machine comprises a machine frame, wherein a bearing seat is arranged on the machine frame, a hollow main shaft is vertically and movably supported in the bearing seat and driven by a main shaft driving mechanism to rotate, a ring seat is fixedly arranged at the upper end of the main shaft, a plurality of sealing sleeves capable of containing potato chip barrels are circumferentially arranged at the bottom of the ring seat, each sealing sleeve can circularly pass through a sleeve closing station, a vacuum pumping station, a nitrogen charging station and a sleeve opening station along with the rotation of the main shaft, a supporting platform used for placing the potato chip barrels is correspondingly arranged under each sealing sleeve, and the supporting platform can ascend at the sleeve closing station to seal the corresponding sealing sleeve, enable the sealing sleeve to pass through the vacuum pumping station and the nitrogen charging station in a sealed state and descend at the sleeve opening station to open the corresponding sealing sleeve; the frame is provided with a vacuumizing and nitrogen-charging mechanism which can perform vacuumizing operation on the interior of the sealing sleeve passing through a vacuumizing station by using a vacuum pump and perform nitrogen charging operation on the interior of the sealing sleeve passing through a nitrogen charging station by using a nitrogen charging machine. The vacuumizing nitrogen filling mechanism is an important component of the rotary vacuum nitrogen filling machine, and the quality of the structure determines whether the rotary vacuum nitrogen filling machine can achieve the purposes of reducing nitrogen gas consumption, improving the utilization rate of nitrogen gas, improving the nitrogen filling effect, reducing the residual oxygen amount in a filled potato chip cylinder and improving the anti-oxidation effect.
Disclosure of Invention
The invention aims to provide a vacuumizing and nitrogen-charging mechanism in a rotary vacuum nitrogen filling machine, which can reduce the nitrogen consumption and improve the nitrogen utilization rate.
In order to achieve the purpose, the invention adopts the following technical scheme: a vacuum pumping and nitrogen filling mechanism in a rotary vacuum nitrogen filling machine comprises: a ring seat fixedly arranged at the upper end of the main shaft and provided with a plurality of sealing sleeves at the bottom along the circumferential direction, an annular vacuum cavity is arranged inside the ring seat, each sealing sleeve at the bottom of the ring seat is communicated with the vacuum cavity through a vacuum pumping passage, each vacuumizing passage is respectively provided with a vacuum valve which can be used for switching on and off the passage, the vacuum valve can be opened when the sealing sleeve passes through a vacuumizing station and can be closed when the sealing sleeve passes through a sleeve closing station, a nitrogen charging station and a sleeve opening station under the control of a vacuum valve driving mechanism, a hollow vacuum tube is movably supported in the main shaft, a first rotary joint capable of being connected with the vacuum pump is arranged at the lower end of the vacuum tube, the upper end of the vacuum tube is communicated with a vacuum cavity of the ring seat, and the vacuum pump can vacuumize the interior of a sealing sleeve passing through a vacuumizing station through the first rotary joint, the vacuum tube, the vacuum cavity and a vacuumizing passage during work; a nitrogen cavity which is relatively independent from the vacuum cavity is arranged in the ring seat, a nitrogen cavity inlet which is communicated with the nitrogen cavity is arranged on the side wall of the ring seat, each sealing sleeve at the bottom of the ring seat is respectively communicated with the nitrogen cavity through a nitrogen filling passage, a nitrogen filling valve which can be connected with and disconnected from the nitrogen filling passage is respectively arranged at each nitrogen filling passage, the nitrogen filling valve can open the nitrogen filling valve when the sealing sleeve passes through a nitrogen filling station under the control of a nitrogen filling valve driving mechanism and can close the nitrogen filling valve when the sealing sleeve passes through a sleeve closing station, a vacuum pumping station and a sleeve opening station, a connecting seat is fixedly arranged at the top of the main shaft, a nitrogen inlet and a nitrogen outlet are arranged on the outer wall of the connecting seat, a nitrogen inlet channel which is communicated with the nitrogen inlet and the nitrogen outlet is arranged in the connecting seat, a second rotary joint which can communicate the nitrogen inlet with the nitrogen filling machine is sleeved outside the connecting seat, and the nitrogen outlet is communicated with the nitrogen cavity inlet on the side wall of the ring seat, during operation, the nitrogen charging machine can perform nitrogen charging operation on the inside of the sealing sleeve passing through the nitrogen charging station through the second rotary joint, the nitrogen inlet channel, the nitrogen outlet, the nitrogen connecting pipe, the nitrogen cavity inlet, the nitrogen cavity and the nitrogen charging passage.
Further, the vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine comprises: the vacuum sealing device is characterized in that a lower fixing seat is arranged between each sealing sleeve and the ring seat, the upper opening of each sealing sleeve is sealed by the lower fixing seat corresponding to the upper part of the sealing sleeve, a first vacuumizing channel communicated with the lower part of the lower fixing seat corresponding to the upper opening of the sealing sleeve is arranged in each lower fixing seat, a second vacuumizing channel communicated with the first vacuumizing channel and the vacuum cavity correspondingly is arranged in the ring seat, the corresponding first vacuumizing channel and the corresponding second vacuumizing channel jointly form a vacuumizing passage communicated with the corresponding sealing sleeve and the vacuum cavity, a vacuum valve for switching on and off the corresponding vacuumizing passage is arranged in the corresponding lower fixing seat, and the corresponding vacuumizing passage is switched on and off by switching on and off the first vacuumizing channel.
Further, the vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine comprises: the specific connection structure between the vacuum tube and the vacuum cavity of the ring seat comprises: the side wall of the ring seat is provided with a vacuum cavity inlet communicated with a vacuum cavity, the upper end of the vacuum tube is provided with a sealing head for sealing the upper pipe orifice of the vacuum tube, the inside of the sealing head is provided with a sealing cavity communicated with the inside of the vacuum tube, the side wall of the sealing head is provided with a through hole communicated with the sealing cavity, the through hole is communicated with the vacuum cavity inlet of the side wall of the ring seat through a vacuumizing connecting pipe, and during operation, the vacuum pump can vacuumize the inside of a sealing sleeve passing through a vacuumizing station through a first rotary joint, the vacuum tube, the sealing cavity in the sealing head, the through hole in the side wall of the sealing head, the vacuumizing connecting pipe, the vacuum cavity inlet, the vacuum cavity, a second vacuumizing channel.
Further, the vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine comprises: the structure of the vacuum valve driving mechanism comprises: a first swing rod is vertically fixed on a valve rod of each vacuum valve, a first roller is movably supported at the outer end of each first swing rod, a vacuum valve opening cam which can be in contact fit with the first roller is arranged on a rack at an inlet of a vacuumizing station, and the curved surface shape of the cam of the vacuum valve opening cam can ensure that when the first roller rotates along with a main shaft and moves along the curved surface of the cam of the vacuum valve opening cam, the first roller can drive the valve rod of the corresponding vacuum valve to rotate through the corresponding first swing rod, so that a valve core of the vacuum valve rotates to open a vacuumizing passage; the rack at the outlet of the vacuum pumping station is provided with a vacuum valve closing cam, and the curved surface shape of the cam of the vacuum valve closing cam can ensure that when the first roller rotates along with the main shaft and moves along the curved surface of the cam of the vacuum valve closing cam, the first roller can drive the valve rod of the corresponding vacuum valve to rotate reversely through the corresponding first swing rod, so that the valve core of the vacuum valve rotates reversely to close the vacuum pumping passage.
Further, the vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine comprises: the upper part of each lower fixing seat is respectively provided with an upper fixing seat arranged at the top of the ring seat, each upper fixing seat is internally provided with a first nitrogen charging channel communicated with a nitrogen cavity, each lower fixing seat is internally provided with a second nitrogen charging channel communicated with the upper opening of the corresponding sealing sleeve, the ring seat is internally provided with a third nitrogen charging channel communicated with the corresponding first nitrogen charging channel and the corresponding second nitrogen charging channel, the first nitrogen charging channel, the third nitrogen charging channel and the second nitrogen charging channel jointly form a nitrogen charging passage communicated with the interior of the sealing sleeve and the nitrogen cavity, a nitrogen charging valve used for switching on and off the corresponding nitrogen charging passage is arranged in the corresponding upper fixing seat, and the nitrogen charging valve is switched on and off the nitrogen charging passage by switching on and off the first nitrogen charging channel.
Further, the vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine comprises: the structure of the nitrogen charging valve driving mechanism comprises: a second swing rod is vertically fixed on a valve rod of each nitrogen charging valve, a second roller is movably supported at the outer end of each second swing rod, a nitrogen charging valve opening cam which can be in contact fit with the second roller is arranged on a rack at an inlet of a nitrogen charging station, and the curved surface shape of the cam of the nitrogen charging valve opening cam can ensure that when the second roller rotates along with the main shaft and moves along the curved surface of the cam of the nitrogen charging valve opening cam, the second roller can drive the valve rod of the corresponding nitrogen charging valve to rotate through the corresponding second swing rod, so that a valve core of the nitrogen charging valve rotates to open a nitrogen charging passage; and a nitrogen charging valve closing cam is arranged on the rack at the outlet of the nitrogen charging station, and the curved surface shape of the cam of the nitrogen charging valve closing cam can ensure that when the second roller rotates along with the main shaft and moves along the curved surface of the cam of the nitrogen charging valve closing cam, the second roller can drive the valve rod of the corresponding nitrogen charging valve to rotate reversely through the corresponding second swing rod, so that the valve core of the nitrogen charging valve rotates reversely to close the nitrogen charging passage.
Further, the vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine comprises: the specific structure of the second rotary joint comprises: the second rotary joint body is movably sleeved outside the connecting seat in a sealing mode through a bearing, a ring of annular groove which is communicated with the nitrogen inlet of the connecting seat in a corresponding mode is formed in the inner wall of the second rotary joint body which is in contact with the connecting seat, and a nitrogen inlet which can enable the nitrogen filling machine to be communicated with the annular groove is formed in the outer wall of the second rotary joint body.
Through the implementation of the technical scheme, the invention has the beneficial effects that: the sealing sleeve that can realize rotating the in-process at the sealing sleeve carries out the evacuation operation and fills the nitrogen operation to the sealing sleeve through filling the nitrogen station, and nitrogen gas air consumption is little, and nitrogen gas high-usage, the incomplete oxygen volume in the potato chip section of thick bamboo after filling is low, has improved the anti-oxidation effect to sealed food such as potato chip, has reduced the use cost of enterprise, use and easy maintenance.
Drawings
FIG. 1 is a schematic structural diagram of a vacuum pumping and nitrogen filling mechanism in a rotary vacuum nitrogen filling machine according to the present invention.
Fig. 2 is an enlarged schematic view of a portion a shown in fig. 1.
Fig. 3 is an enlarged schematic view of a portion C shown in fig. 1.
Fig. 4 is a schematic diagram showing the mutual positional relationship among the vacuum valve opening cam, the vacuum valve closing cam, the nitrogen charging valve opening cam and the nitrogen charging valve closing cam in the top view of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms, "vertical", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have specific orientations, and specific orientation configurations and operations, and thus, are not to be considered 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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise indicated, "a plurality" means two or more.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the vacuum-pumping and nitrogen-charging mechanism in the rotary vacuum nitrogen-filling machine includes: frame 1, be provided with bearing frame 2 in frame 1, vertical movable support has hollow main shaft 3 in bearing frame 2, main shaft 3 is rotated by the drive of main shaft actuating mechanism, the fixed ring seat 4 that is provided with in upper end of main shaft 3, be provided with the seal cover 6 that a plurality of can hold potato chip section of thick bamboo 5 in the bottom of ring seat 4 along circumference, each seal cover 6 can circulate through closing the cover station along with main shaft 3 rotates, the evacuation station, fill nitrogen station and open the cover station, in this embodiment, can realize that the evacuation structure that carries out the evacuation operation to seal cover 6 through the evacuation station specifically includes at seal cover 6 rotation in-process: an annular vacuum cavity 7 is arranged in the ring seat 4, each sealing sleeve 6 at the bottom of the ring seat 4 is respectively communicated with the vacuum cavity 7 through a vacuum pumping passage, a vacuum valve 8 capable of opening and closing the passage is respectively arranged at each vacuum pumping passage, in the embodiment, a lower fixed seat 9 is respectively arranged between each sealing sleeve 6 and the ring seat 4, the upper opening of each sealing sleeve 6 is sealed by the corresponding lower fixed seat 9 at the upper part, a first vacuum pumping passage 10 communicated with the upper opening of the corresponding sealing sleeve at the lower part is respectively arranged in each lower fixed seat 9, a second vacuum pumping passage 11 correspondingly communicated with the first vacuum pumping passage 10 and the vacuum cavity 7 is arranged in the ring seat 4, the corresponding first vacuum pumping passage 10 and the corresponding second vacuum pumping passage 11 jointly form a vacuum pumping passage communicated with the vacuum cavity 7 in the corresponding sealing sleeve 6, and the vacuum valve 8 for opening and closing the corresponding vacuum pumping passage is arranged in the corresponding lower fixed seat 9, the vacuum valve 8 is used for switching on and off the corresponding vacuumizing passage by switching on and off the first vacuumizing passage 10; the vacuum valve 8 can be controlled by the vacuum valve driving mechanism to open the vacuum valve when the sealing sleeve 6 passes through a vacuumizing station and close the vacuum valve 8 when the sealing sleeve 6 passes through a sleeve closing station, a nitrogen charging station and a sleeve opening station, a hollow vacuum tube 12 is movably supported in the main shaft 3, a first rotary joint 13 which can be connected with a vacuum pump is arranged at the lower end of the vacuum tube 12, and the upper end of the vacuum tube 12 is communicated with the vacuum cavity 7 of the ring seat 4; in the present embodiment, the specific connection structure between the vacuum tube 12 and the vacuum chamber 7 of the ring seat 4 includes: a vacuum cavity inlet 14 communicated with the vacuum cavity 7 is formed in the side wall of the ring seat 4, a sealing head 15 for sealing a pipe orifice in the vacuum pipe 12 is arranged at the upper end of the vacuum pipe 12, a sealing cavity 16 communicated with the interior of the vacuum pipe 13 is formed in the sealing head 15, a through hole 17 communicated with the sealing cavity 16 is formed in the side wall of the sealing head 15, and the through hole 17 is communicated with the vacuum cavity inlet 14 in the side wall of the ring seat 4 through a vacuumizing connecting pipe 18; when the vacuum pump works, the vacuum pump can perform vacuum pumping operation on the inside of the sealing sleeve rotating to pass through a vacuum pumping station through the first rotary joint 13, the vacuum pipe 12, the sealing cavity 16 in the sealing head 15, the through hole 17 in the side wall of the sealing head 15, the vacuum pumping connecting pipe 18, the vacuum cavity inlet 14 on the side wall of the ring seat 4, the vacuum cavity 7 in the ring seat 4, the second vacuum pumping channel 11 in the ring seat 4 and the first vacuum pumping channel 10 in the lower fixed seat 9;
in the present embodiment, the structure of the vacuum valve drive mechanism includes: a first swing rod 19 is vertically fixed on a valve rod of each vacuum valve 8, a first roller 20 is movably supported at the outer end of each first swing rod 19, a vacuum valve opening cam 21 which can be in contact fit with the first roller 20 is arranged on the frame 1 at the inlet of the vacuumizing station, and the curved surface shape of the cam of the vacuum valve opening cam 21 can ensure that when the first roller 20 rotates along with the main shaft 3 and moves along the curved surface of the cam of the vacuum valve opening cam, the first roller 20 can drive the valve rod of the corresponding vacuum valve 8 to rotate through the corresponding first swing rod 19, so that a valve core of the vacuum valve 8 rotates to open a vacuumizing passage; a vacuum valve closing cam 22 is arranged on the rack 1 at the outlet of the vacuum pumping station, and the curved surface shape of the cam of the vacuum valve closing cam 22 can ensure that when the first roller 20 rotates along with the main shaft 3 and moves along the curved surface of the cam of the vacuum valve closing cam 22, the first roller 20 can drive the valve rod of the corresponding vacuum valve 8 to rotate reversely through the corresponding first swing rod 19, so that the valve core of the vacuum valve 8 rotates reversely to close the vacuum pumping passage; the vacuum valve driving mechanism is simple in structure, adopts a mechanical structure to drive the vacuum valve to close or open, does not relate to any electrical equipment, is simple and convenient to install and maintain, high in use safety and relatively low in manufacturing cost;
in this embodiment, can realize at seal cover 6 rotation in-process to the seal cover 6 that passes through the nitrogen station fill the nitrogen structure of filling nitrogen operation specifically include: a nitrogen cavity 23 which is relatively independent from the vacuum cavity 7 is arranged in the ring seat 4, a nitrogen cavity inlet 24 which is communicated with the nitrogen cavity 23 is arranged on the side wall of the ring seat 4, each sealing sleeve 6 at the bottom of the ring seat 4 is respectively communicated with the nitrogen cavity 23 through a nitrogen charging passage, a nitrogen charging valve 25 which can be opened and closed is respectively arranged at each nitrogen charging passage, the nitrogen charging valve 25 can open the nitrogen charging valve 25 when the sealing sleeve 6 passes through a nitrogen charging station under the control of a nitrogen charging valve driving mechanism, and can close the nitrogen charging valve 25 when the sealing sleeve 6 passes through a sleeve closing station, a vacuum pumping station and a sleeve opening station, in the embodiment, an upper fixed seat 26 which is arranged at the top of the ring seat 4 is respectively arranged above each lower fixed seat 9, a first nitrogen charging channel 27 which is communicated with the nitrogen cavity 23 is respectively arranged in each upper fixed seat 26, a second nitrogen charging channel 28 which is communicated with the corresponding upper opening of the sealing sleeve 6 is respectively arranged in each lower fixed seat 9, a third nitrogen charging channel 29 which is used for communicating the corresponding first nitrogen charging channel 27 with the second nitrogen charging channel 28 is arranged in the ring seat 4, the first nitrogen charging channel 27, the third nitrogen charging channel 29 and the second nitrogen charging channel 28 jointly form a nitrogen charging passage which is used for communicating the interior of the sealing sleeve 6 with the nitrogen cavity 23, a nitrogen charging valve 25 which is used for switching on and off the corresponding nitrogen charging passage is arranged in the corresponding upper fixing seat 26, and the nitrogen charging valve 25 is used for switching on and off the nitrogen charging passage by switching on and off the first nitrogen charging channel 27; a connecting seat 30 is fixedly arranged at the top of the main shaft 3, a nitrogen inlet 31 and a nitrogen outlet 32 are arranged on the outer wall of the connecting seat 30, a nitrogen inlet channel 33 for communicating the nitrogen inlet 31 with the nitrogen outlet 32 is arranged in the connecting seat 30, a second rotary joint 34 capable of communicating the nitrogen inlet 31 with a nitrogen charging machine is sleeved outside the connecting seat 30, and the nitrogen outlet 32 is communicated with a nitrogen cavity inlet 24 on the side wall of the ring seat 4 through a nitrogen connecting pipe 33; in the present embodiment, the specific structure of the second rotary joint 34 includes: a second rotary joint body movably and hermetically sleeved outside the connecting seat 30 through a bearing 36, wherein a ring of annular groove 37 correspondingly communicated with the nitrogen inlet 31 of the connecting seat 30 is arranged on the inner wall of the second rotary joint body contacted with the connecting seat 30, and a nitrogen inlet 38 capable of communicating the nitrogen charging machine with the annular groove 37 is arranged on the outer wall of the second rotary joint body; during operation, the nitrogen charging machine can perform nitrogen charging operation on the inside of the sealing sleeve 6 which rotates through the nitrogen charging station through the nitrogen inlet 38 of the second rotary joint 34, the annular groove 37 of the second rotary joint 34, the nitrogen inlet 31 of the connecting seat 30, the nitrogen inlet channel 33 of the connecting seat 30, the nitrogen outlet 32 of the connecting seat 30, the nitrogen connecting pipe 35, the nitrogen cavity inlet 24 of the side wall of the ring seat 4, the nitrogen cavity 23 in the ring seat 4, the first nitrogen charging channel 27 in the upper fixing seat 26, the third nitrogen charging channel 29 in the ring seat 4 and the second nitrogen charging channel 28 in the lower fixing seat 9;
in this embodiment, the structure of the nitrogen charging valve driving mechanism includes: a second swing rod 39 is vertically fixed on each valve rod of each nitrogen charging valve 25, a second roller 40 is movably supported at the outer end of each second swing rod 39, a nitrogen charging valve opening cam 41 which can be in contact fit with the second roller 40 is arranged on the frame 1 at the inlet of the nitrogen charging station, and the curved surface shape of the cam of the nitrogen charging valve opening cam 41 can ensure that when the second roller 40 rotates along with the main shaft 3 and moves along the curved surface of the cam of the nitrogen charging valve opening cam 40, the second roller 40 can drive the valve rod corresponding to the nitrogen charging valve 25 to rotate through the corresponding second swing rod 39, so that the valve core of the nitrogen charging valve 25 rotates to open the nitrogen charging passage; a nitrogen charging valve closing cam 42 is arranged on the frame 1 at the outlet of the nitrogen charging station, and the curved surface shape of the cam of the nitrogen charging valve closing cam 42 can ensure that when the second roller 40 rotates along with the main shaft 3 and moves along the curved surface of the cam of the nitrogen charging valve closing cam 42, the second roller 40 can drive the valve rod of the corresponding nitrogen charging valve 25 to rotate in the reverse direction through the corresponding second swing rod 39, so that the valve core of the nitrogen charging valve 25 rotates in the reverse direction to close the nitrogen charging passage;
when the device works, the first rotary joint 13 is connected with a vacuum pump, and the nitrogen inlet 38 is connected with a nitrogen charging machine; then starting a speed reducing motor 56, wherein the speed reducing motor 56 is meshed with a driven gear 55 through a driving gear 57 to drive a main shaft 3 to rotate, the main shaft 3 drives a sealing sleeve 6 in which a potato chip barrel 5 to be filled is placed to sequentially circulate through a sleeve closing station, a vacuum pumping station, a nitrogen filling station and a sleeve opening station, when the sealing sleeve 6 rotates to pass through the sleeve closing station, the vacuum pumping station and the nitrogen filling station, the sealing sleeve 6 is in a closed state, a relatively closed working chamber is arranged in the sealing sleeve, and when the sealing sleeve 6 rotates to pass through the sleeve opening station, the bottom of the sealing sleeve 6 is opened, so that the potato chip barrel after being filled with nitrogen can be taken out of the sealing sleeve 6;
before the sealing sleeve 6 moved out of the sleeve closing station continues to rotate along with the main shaft 3 and enters the vacuum pumping station, the first roller 20 on the corresponding vacuum valve 8 on the sealing sleeve 6 firstly passes through the vacuum valve opening cam 21, and in the process that the first roller 20 moves along the cam curved surface of the vacuum valve opening cam 21, the first roller 20 can drive the valve rod of the corresponding vacuum valve 8 to rotate through the corresponding first swing rod 19, so that the valve core of the vacuum valve 8 rotates to open the first vacuum pumping channel 10, and at the moment, the nitrogen charging valve 25 is in a closed state; after the sealing sleeve 6 continues to rotate and enters a vacuumizing station, the vacuum pump can vacuumize the inside of the sealing sleeve which rotates through the vacuumizing station through the first rotary joint 13, the vacuum pipe 12, the sealing cavity 16 in the sealing head 15, the through hole 17 in the side wall of the sealing head 15, the vacuumizing connecting pipe 18, the vacuum cavity inlet 14 in the side wall of the ring seat 4, the vacuum cavity 7 in the ring seat 4, the second vacuumizing channel 11 in the ring seat 4 and the first vacuumizing channel 10 in the lower fixing seat 9, so that the inside of the potato chip barrel 5 is vacuumized, and the vacuum degree in the potato chip barrel 5 reaches a preset value; after the sealing sleeve 6 moves out of the vacuumizing station along with the continuous rotation of the main shaft 3, the first roller 20 on the corresponding vacuum valve 8 on the sealing sleeve 6 passes through the vacuum valve closing cam 22, and in the process that the first roller 20 moves along the cam curved surface of the vacuum valve closing cam 22, the first roller 20 can drive the valve rod of the corresponding vacuum valve 8 to rotate reversely through the corresponding first swing rod 19, so that the valve core of the vacuum valve 8 rotates reversely to close the first vacuumizing channel 10, and the vacuumizing of the interior of the sealing sleeve 6 and the interior of the potato chip barrel 5 which move out of the vacuumizing station is stopped;
before the sealing sleeve 6 moved out of the vacuumizing station continues to rotate along with the main shaft 3 and enters the nitrogen charging station, the second roller 40 on the corresponding nitrogen charging valve 25 on the sealing sleeve 6 firstly passes through the nitrogen charging valve opening cam 41, and in the process that the second roller 40 moves along the cam curved surface of the nitrogen charging valve opening cam 41, the second roller 40 can drive the valve rod of the corresponding nitrogen charging valve 25 to rotate through the corresponding second swing rod 39, so that the valve core of the nitrogen charging valve 25 rotates to open the first nitrogen charging channel 27, and at the moment, the vacuum valve 8 is in a closed state; after the sealing sleeve 6 continuously rotates to enter a nitrogen filling station, at the moment, the nitrogen filling machine can fill nitrogen into the sealing sleeve 6 which rotates through the nitrogen filling station through the nitrogen inlet 38 of the second rotary joint 34, the annular groove 37 of the second rotary joint 34, the nitrogen inlet 31 of the connecting seat 30, the nitrogen inlet channel 33 of the connecting seat 30, the nitrogen outlet 32 of the connecting seat 30, the nitrogen connecting pipe 35, the nitrogen cavity inlet 24 of the side wall of the ring seat 4, the nitrogen cavity 23 in the ring seat 4, the first nitrogen filling channel 27 in the upper fixing seat 26, the third nitrogen filling channel 29 in the ring seat 4 and the second nitrogen filling channel 28 in the lower fixing seat 9, so that nitrogen is filled into the potato chip cylinder 5, and the nitrogen concentration in the potato chip cylinder 5 reaches a preset value; after the sealing sleeve 6 moves out of the nitrogen charging station along with the continuous rotation of the main shaft 3, the second roller 39 on the corresponding nitrogen charging valve 25 on the sealing sleeve 6 passes through the nitrogen charging valve closing cam 42, and in the process that the second roller 40 moves along the cam curved surface of the nitrogen charging valve closing cam 42, the second roller 40 can drive the valve rod of the corresponding nitrogen charging valve 25 to rotate reversely through the corresponding second swing rod 39, so that the valve core of the nitrogen charging valve 25 rotates reversely to close the first nitrogen charging channel 27, and the nitrogen charging in the sealing sleeve 6 and the potato chip barrel 5 which move out of the nitrogen charging station is stopped.
The invention has the advantages that: the sealing sleeve that can realize rotating the in-process at the sealing sleeve carries out the evacuation operation and fills the nitrogen operation to the sealing sleeve through filling the nitrogen station, and nitrogen gas air consumption is little, and nitrogen gas high-usage, the incomplete oxygen volume in the potato chip section of thick bamboo after filling is low, has improved the anti-oxidation effect to sealed food such as potato chip, has reduced the use cost of enterprise, use and easy maintenance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (7)
1. A vacuum pumping and nitrogen filling mechanism in a rotary vacuum nitrogen filling machine comprises: fixed set up in main shaft upper end and the ring seat that a plurality of seal covers were installed along circumference in the bottom, its characterized in that: the vacuum pump is characterized in that an annular vacuum cavity is arranged in the ring seat, each sealing sleeve at the bottom of the ring seat is communicated with the vacuum cavity through a vacuum pumping passage, a vacuum valve capable of switching on and off the passage is arranged at each vacuum pumping passage, the vacuum valve can open the vacuum valve when the sealing sleeve passes through a vacuum pumping station and close the vacuum valve when the sealing sleeve passes through a sleeve closing station, a nitrogen charging station and a sleeve opening station under the control of a vacuum valve driving mechanism, a hollow vacuum tube is movably supported in the main shaft, a first rotary joint capable of being connected with the vacuum pump is arranged at the lower end of the vacuum tube, the upper end of the vacuum tube is communicated with the vacuum cavity of the ring seat, and the vacuum pump can perform vacuum pumping operation on the interior of the sealing sleeve passing through the vacuum pumping station through the first rotary joint, the vacuum tube, the vacuum cavity and the; a nitrogen cavity which is relatively independent from the vacuum cavity is arranged in the ring seat, a nitrogen cavity inlet which is communicated with the nitrogen cavity is arranged on the side wall of the ring seat, each sealing sleeve at the bottom of the ring seat is respectively communicated with the nitrogen cavity through a nitrogen filling passage, a nitrogen filling valve which can be connected with and disconnected from the nitrogen filling passage is respectively arranged at each nitrogen filling passage, the nitrogen filling valve can open the nitrogen filling valve when the sealing sleeve passes through a nitrogen filling station under the control of a nitrogen filling valve driving mechanism and can close the nitrogen filling valve when the sealing sleeve passes through a sleeve closing station, a vacuum pumping station and a sleeve opening station, a connecting seat is fixedly arranged at the top of the main shaft, a nitrogen inlet and a nitrogen outlet are arranged on the outer wall of the connecting seat, a nitrogen inlet channel which is communicated with the nitrogen inlet and the nitrogen outlet is arranged in the connecting seat, a second rotary joint which can communicate the nitrogen inlet with the nitrogen filling machine is sleeved outside the connecting seat, and the nitrogen outlet is communicated with the nitrogen cavity inlet on the side wall of the ring seat, during operation, the nitrogen charging machine can perform nitrogen charging operation on the inside of the sealing sleeve passing through the nitrogen charging station through the second rotary joint, the nitrogen inlet channel, the nitrogen outlet, the nitrogen connecting pipe, the nitrogen cavity inlet, the nitrogen cavity and the nitrogen charging passage.
2. The vacuum pumping and nitrogen filling mechanism of the rotary vacuum nitrogen filling machine as claimed in claim 1, wherein: the vacuum sealing device is characterized in that a lower fixing seat is arranged between each sealing sleeve and the ring seat, the upper opening of each sealing sleeve is sealed by the lower fixing seat corresponding to the upper part of the sealing sleeve, a first vacuumizing channel communicated with the lower part of the lower fixing seat corresponding to the upper opening of the sealing sleeve is arranged in each lower fixing seat, a second vacuumizing channel communicated with the first vacuumizing channel and the vacuum cavity correspondingly is arranged in the ring seat, the corresponding first vacuumizing channel and the corresponding second vacuumizing channel jointly form a vacuumizing passage communicated with the corresponding sealing sleeve and the vacuum cavity, a vacuum valve for switching on and off the corresponding vacuumizing passage is arranged in the corresponding lower fixing seat, and the corresponding vacuumizing passage is switched on and off by switching on and off the first vacuumizing channel.
3. The vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine as claimed in claim 1 or 2, wherein: the specific connection structure between the vacuum tube and the vacuum cavity of the ring seat comprises: the side wall of the ring seat is provided with a vacuum cavity inlet communicated with a vacuum cavity, the upper end of the vacuum tube is provided with a sealing head for sealing the upper pipe orifice of the vacuum tube, the inside of the sealing head is provided with a sealing cavity communicated with the inside of the vacuum tube, the side wall of the sealing head is provided with a through hole communicated with the sealing cavity, the through hole is communicated with the vacuum cavity inlet of the side wall of the ring seat through a vacuumizing connecting pipe, and during operation, the vacuum pump can vacuumize the inside of a sealing sleeve passing through a vacuumizing station through a first rotary joint, the vacuum tube, the sealing cavity in the sealing head, the through hole in the side wall of the sealing head, the vacuumizing connecting pipe, the vacuum cavity inlet, the vacuum cavity, a second vacuumizing channel.
4. The vacuum pumping and nitrogen filling mechanism of the rotary vacuum nitrogen filling machine as claimed in claim 3, wherein: the structure of the vacuum valve driving mechanism comprises: a first swing rod is vertically fixed on a valve rod of each vacuum valve, a first roller is movably supported at the outer end of each first swing rod, a vacuum valve opening cam which can be in contact fit with the first roller is arranged on a rack at an inlet of a vacuumizing station, and the curved surface shape of the cam of the vacuum valve opening cam can ensure that when the first roller rotates along with a main shaft and moves along the curved surface of the cam of the vacuum valve opening cam, the first roller can drive the valve rod of the corresponding vacuum valve to rotate through the corresponding first swing rod, so that a valve core of the vacuum valve rotates to open a vacuumizing passage; the rack at the outlet of the vacuum pumping station is provided with a vacuum valve closing cam, and the curved surface shape of the cam of the vacuum valve closing cam can ensure that when the first roller rotates along with the main shaft and moves along the curved surface of the cam of the vacuum valve closing cam, the first roller can drive the valve rod of the corresponding vacuum valve to rotate reversely through the corresponding first swing rod, so that the valve core of the vacuum valve rotates reversely to close the vacuum pumping passage.
5. The vacuum pumping and nitrogen filling mechanism of the rotary vacuum nitrogen filling machine as claimed in claim 2, wherein: the upper part of each lower fixing seat is respectively provided with an upper fixing seat arranged at the top of the ring seat, each upper fixing seat is internally provided with a first nitrogen charging channel communicated with a nitrogen cavity, each lower fixing seat is internally provided with a second nitrogen charging channel communicated with the upper opening of the corresponding sealing sleeve, the ring seat is internally provided with a third nitrogen charging channel communicated with the corresponding first nitrogen charging channel and the corresponding second nitrogen charging channel, the first nitrogen charging channel, the third nitrogen charging channel and the second nitrogen charging channel jointly form a nitrogen charging passage communicated with the interior of the sealing sleeve and the nitrogen cavity, a nitrogen charging valve used for switching on and off the corresponding nitrogen charging passage is arranged in the corresponding upper fixing seat, and the nitrogen charging valve is switched on and off the nitrogen charging passage by switching on and off the first nitrogen charging channel.
6. The vacuum pumping and nitrogen filling mechanism of the rotary vacuum nitrogen filling machine as claimed in claim 5, wherein: the structure of the nitrogen charging valve driving mechanism comprises: a second swing rod is vertically fixed on a valve rod of each nitrogen charging valve, a second roller is movably supported at the outer end of each second swing rod, a nitrogen charging valve opening cam which can be in contact fit with the second roller is arranged on a rack at an inlet of a nitrogen charging station, and the curved surface shape of the cam of the nitrogen charging valve opening cam can ensure that when the second roller rotates along with the main shaft and moves along the curved surface of the cam of the nitrogen charging valve opening cam, the second roller can drive the valve rod of the corresponding nitrogen charging valve to rotate through the corresponding second swing rod, so that a valve core of the nitrogen charging valve rotates to open a nitrogen charging passage; and a nitrogen charging valve closing cam is arranged on the rack at the outlet of the nitrogen charging station, and the curved surface shape of the cam of the nitrogen charging valve closing cam can ensure that when the second roller rotates along with the main shaft and moves along the curved surface of the cam of the nitrogen charging valve closing cam, the second roller can drive the valve rod of the corresponding nitrogen charging valve to rotate reversely through the corresponding second swing rod, so that the valve core of the nitrogen charging valve rotates reversely to close the nitrogen charging passage.
7. The vacuum pumping and nitrogen filling mechanism in the rotary vacuum nitrogen filling machine as claimed in claim 1, 5 or 6, wherein: the specific structure of the second rotary joint comprises: the second rotary joint body is movably sleeved outside the connecting seat in a sealing mode through a bearing, a ring of annular groove which is communicated with the nitrogen inlet of the connecting seat in a corresponding mode is formed in the inner wall of the second rotary joint body which is in contact with the connecting seat, and a nitrogen inlet which can enable the nitrogen filling machine to be communicated with the annular groove is formed in the outer wall of the second rotary joint body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110259913.5A CN112874872A (en) | 2021-03-10 | 2021-03-10 | Vacuumizing and nitrogen filling mechanism in rotary vacuum nitrogen filling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110259913.5A CN112874872A (en) | 2021-03-10 | 2021-03-10 | Vacuumizing and nitrogen filling mechanism in rotary vacuum nitrogen filling machine |
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| CN112874872A true CN112874872A (en) | 2021-06-01 |
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| CN202110259913.5A Pending CN112874872A (en) | 2021-03-10 | 2021-03-10 | Vacuumizing and nitrogen filling mechanism in rotary vacuum nitrogen filling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115196565A (en) * | 2022-07-08 | 2022-10-18 | 江苏仅一联合智造有限公司 | Continuous vacuum-pumping and nitrogen-filling distribution mechanism |
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2021
- 2021-03-10 CN CN202110259913.5A patent/CN112874872A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115196565A (en) * | 2022-07-08 | 2022-10-18 | 江苏仅一联合智造有限公司 | Continuous vacuum-pumping and nitrogen-filling distribution mechanism |
| CN115196565B (en) * | 2022-07-08 | 2024-03-26 | 江苏仅一联合智造有限公司 | Continuous vacuumizing and nitrogen filling distribution mechanism |
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