CN102784059B - Spray gun device for coating machine - Google Patents
Spray gun device for coating machine Download PDFInfo
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- CN102784059B CN102784059B CN201210268974.9A CN201210268974A CN102784059B CN 102784059 B CN102784059 B CN 102784059B CN 201210268974 A CN201210268974 A CN 201210268974A CN 102784059 B CN102784059 B CN 102784059B
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- ejiction opening
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- dispensing head
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Abstract
The invention provides a spray gun device for a coating machine. The spray gun device comprises a spray nozzle, an air and liquid distributing head, a gun body, a gun needle and a gun body back cover, wherein a first spray opening, a second spray opening and a third spray opening are arranged on the spray nozzle, a first air inlet, a second air inlet and a liquid inlet are arranged at the side surface of the gun body, the first air inlet is connected with a first air pipe, a first control valve is arranged on the first air pipe, the second air inlet is connected with a second air pipe, and a second control valve are arranged on the second air pipe. The spray gun device for the coating machine is characterized in that the two air inlets are arranged on the gun body, the two air inlets are respectively connected with two compressed air pipes, and the control valves of the two compressed air pipes respectively and independently work. In the whole coating process, the control valve of the second air pipe needs to be maintained to be always in the work state, i.e. airflows always flow out from the second spray opening and the third spray opening, the liquid drip phenomenon generated under various unexpected conditions can be effectively avoided, and the service life of the spray gun is greatly prolonged.
Description
Technical field
The invention belongs to pharmaceutical equipment field, be specifically related to a kind of seed-coating machine spray gun device.
Background technology
Film coating machine is the equipment that centering, western medicine tablet label appearance are carried out the coatings such as sugar-coat, thin film, be to integrate forceful electric power, light current and pneumatic novel device, it is mainly partly comprised of spraying system of main frame, controlled thermal wind system, automatic liquid supply air feed etc.The speed governing of main motor variable ratio frequency changer, it is that the way that electrical appliance is controlled is automatically sprayed onto coating adjuvant on tablet surface with high atomization spray gun, tablet is made complicated continuously orbiting motion in coating pan simultaneously, coating solution is wrapped on the label of tablet equably, in pot, there is controlled hot blast to be dried tablet simultaneously, make sheet medicine surface form fast firm, fine and closely woven, complete, round and smooth surface film.
Spray gun is the important component part of solid preparation film coating machine, and the accurate degree of its design concept, processing etc. have directly determined the quality of coated product.Seed-coating machine is from introducing, digesting to maturation, all in the situation that meeting coating principle, to carry out in structure and innovation and the transformation of control system, spray gun is as the core component of seed-coating machine, seldom there is producer innovate and improve, the general spray gun that all adopts Japanese Yan Tian company, but rock field spray gun part material for aluminum do, grave fault closes GMP requirement.Also there is the seldom producer oneself of amount to produce spray gun, the principle of this spray gun is, on a total compressed air line, spray gun is installed, allow spray gun connect two compressed air hoses, wherein a pipe carries compressed air by thimble jack-up in nozzle, thereby liquid can be flowed out in nozzle.Another root pipe carries compressed air to be also divided into three strands of air-flows, and middle one air-flow blows out liquid along thimble, and two strands of left and right form a shearing force, by liquid dispersion become one coniform.The natural mechanical seal that the sealing of this spray gun adopts the cooperation between rifle pin and rifle cap to form, when the sealing between rifle pin and rifle cap occurs wearing and tearing or do not match, just there will be dropping liquid phenomenon.And spray gun is in the environment of high temperature and works always, coating solution is again to belong to full-bodied liquid, gap during coating between rifle pin and rifle cap is very little again, coating solution will form a skim under the effect at high temperature on rifle pin or rifle cap so, thereby cause obstruction, Here it is why in normal coating, the prolongation that spray gun liquid out can be in time and reason less and less.When spray gun stops up, just must carry out automatically or artificial clear rifle, the principle of clear rifle does not supply with compressed air to exactly spray gun, and rifle pin is compressed to gas-liquid dispensing head under the effect of spring, forms the mechanical seal that nature coordinates.Repeatedly carry out at short notice such action, the film that makes to form under temperature action between rifle pin and gas-liquid dispensing head has not existed and has reached the object of rifle clearly under such action.When spray gun dropping liquid all occurs in clearly rifle in sum, and clear rifle is all substantially in coating process, and dropping liquid at this time directly affects coating quality, thereby forms the phenomenons such as bonding die, flower sheet, Pericarpium Citri tangerinae.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of and can eliminate dropping liquid phenomenon, improve the seed-coating machine spray gun device of coating quality.
The present invention is achieved through the following technical solutions:
A spray gun device, comprises nozzle, gas-liquid dispensing head, rifle body, rifle pin and rifle body bonnet; One end of rifle body is provided with a rifle body cavity, and a piston is installed in rifle body cavity, and described piston is connected with rifle body bonnet by the first spring; Rifle body bonnet is fixedly connected with rifle body;
It is characterized in that, on described nozzle, be provided with the first ejiction opening, the second ejiction opening and the 3rd ejiction opening, the first ejiction opening is positioned at the center of nozzle, the second ejiction opening and the 3rd ejiction opening are symmetricly set on the both sides of the first ejiction opening, and the central axis of the first ejiction opening, the second ejiction opening and the 3rd ejiction opening converges at a bit; Described nozzle is fixedly connected with gas-liquid dispensing head;
One end of described gas-liquid dispensing head is provided with a top cap, and described top cap stretches in the first ejiction opening of nozzle, and and the inwall of the first ejiction opening between form an annular space; The other end of gas-liquid dispensing head is fixedly connected with rifle body; On the cap of top, be provided with first endoporus that runs through gas-liquid dispensing head, gas-liquid dispensing head be circumferentially provided with a plurality of inner air vents, the outside of described inner air vent is along a plurality of outer pores of being circumferentially provided with of gas-liquid dispensing head; Described a plurality of inner air vent is communicated with the annular space between the first ejiction opening and top cap, and described a plurality of outer pores are communicated with the second ejiction opening and the 3rd ejiction opening respectively by the first through hole and the second through hole being arranged on nozzle;
Described rifle body is provided with an admission chamber away from the end of rifle body cavity, the outside of admission chamber is circumferentially provided with an inner groove along rifle body, the outside of inner groove along rifle body be circumferentially provided with an outer groove, the side of rifle body is provided with the first air inlet, the second air inlet and inlet; The position of inner groove is corresponding with the position of inner air vent, and the position of outer groove is corresponding with the position of outer pore; The first air inlet is all communicated with inner groove and rifle body cavity by third through-hole, and the second air inlet is communicated with outer groove by fourth hole; Inlet is communicated with admission chamber; The first air inlet is connected with the first trachea, is provided with the first control valve on the first trachea; The second air inlet is connected with the second trachea, is provided with the second control valve on the second trachea;
Described rifle pin is through rifle body and gas-liquid dispensing head, and one end and gas-liquid distribute the first endoporus on the cap of the crown to be sealed and matched, and the other end is fixedly connected with piston.
The further setting of the present invention is, the end of described rifle body bonnet is also provided with an adjusting nut for limited piston stroke.
The further setting of the present invention is, the inside of described adjusting nut is provided with a venthole.
The further setting of the present invention is, the junction of described rifle pin and rifle body is provided with two sealing members, is provided with the second spring, and fixes by the first locking nut between two sealing members.
The further setting of the present invention is, described inner air vent and outer pore are 3.
The further setting of the present invention is, described nozzle and gas-liquid dispensing head are fixed together by the second locking nut being arranged on nozzle excircle.
The further setting of the present invention is, described gas-liquid dispensing head is provided with a sealing gasket with contacting on end face of rifle body, offers a plurality of holes corresponding with inner air vent and exogenous QI hole site on described sealing gasket.
Seed-coating machine spray gun device of the present invention is provided with two air inlets on rifle body, and two air inlets are connected with two compressed air hoses respectively, and the control valve of two compressed air hoses works alone separately.The first air inlet is connected with the first trachea, the compressed air that the first trachea is carried enters spray gun by the first air inlet, in the time of by thimble jack-up, along thimble, liquid is blown out, thereby liquid can be sprayed in nozzle, and under compressed-air actuated effect the conglobate aerosol suspendible of shape body; The second air inlet is connected with the second trachea, the compressed air that the second trachea is carried enters spray gun by the second air inlet, is divided into afterwards two strands of air-flows, by the second ejiction opening and the 3rd ejiction opening, is sprayed, two strands of left and right air-flow forms a shearing force, and liquid dispersion is become to a fan-shaped.
In whole coating process, as long as keep the control valve of the second trachea always in running order, the second ejiction opening and the 3rd ejiction opening have air-flow to flow out all the time; Even if there is dropping liquid to produce during clear like this rifle, also can be by the shearing force institute atomization of the γ-ray emission of the second ejiction opening and the ejection of the 3rd ejiction opening, thus can effectively remove the adhesive sticking on nozzle, make rifle more remarkable effect clearly; Effectively avoid the dropping liquid phenomenon producing under various fortuitous events, greatly extended the service life of rifle pin and spray gun, guaranteed coating quality.
Because the shooting of the first trachea and the atomization of the second trachea can independently be controlled separately, when the hardness of label or friability can not meet coating under normal circumstances, the present invention can guarantee under the prerequisite that rifle can be opened, to carry out coating, reduce the impact that compressed air produces the not high label of friability, stop the generation of pitted skin phenomenon, guaranteed coating quality.
Accompanying drawing explanation
Fig. 1 is the profile of seed-coating machine spray gun device of the present invention;
Fig. 2 is the structure chart of nozzle;
Fig. 3 is the structure chart of gas-liquid dispensing head;
Fig. 4 is the top view of gas-liquid dispensing head;
Fig. 5 is a profile of rifle body;
Fig. 6 is another profile of rifle body;
Fig. 7 is that the A of Fig. 6 is to view;
In figure, the implication of each number designation is: nozzle 1, gas-liquid dispensing head 2, rifle body 3, rifle pin 4, rifle body bonnet 5, piston 6, the first spring 7, the first ejiction opening 11, the second ejiction opening 12, the 3rd ejiction opening 13, the first through hole 14, the second through hole 15, the second locking nut 16, top cap 21, annular space 22, the first endoporus 23, inner air vent 24, outer pore 25, sealing gasket 26, rifle body cavity 31, admission chamber 32, inner groove 33, outer groove 34, the first air inlet 35, the second air inlet 36, inlet 37, third through-hole 38, fourth hole 39, protuberance 41, nut 42, sealing member 43, the second spring 44, the first locking nut 45, adjusting nut 51, venthole 53.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Fig. 1-7, the invention provides a kind of seed-coating machine spray gun device, comprise nozzle 1, gas-liquid dispensing head 2, rifle body 3, rifle pin 4, rifle body bonnet 5, piston 6 and the first spring 7.
On nozzle 1, be provided with the first ejiction opening 11, the second ejiction opening 12 and the 3rd ejiction opening 13, the first ejiction opening 11 is positioned at the center of nozzle 1, the second ejiction opening 12 and the 3rd ejiction opening 13 are symmetricly set on the both sides of the first ejiction opening 11, and the central axis of the first ejiction opening 11, the second ejiction opening 12 and the 3rd ejiction opening 13 converges at a bit; The second ejiction opening 12 and the 3rd ejiction opening 13 are all communicated with the first through hole 14 and the second through hole 15 on nozzle 1.
One end of gas-liquid dispensing head 2 is provided with a top cap 21, and described top cap 21 stretches in the first ejiction opening 11 of nozzle, and and the inwall of the first ejiction opening 11 between form an annular space 22; The other end of gas-liquid dispensing head 2 is fixedly connected with rifle body 3; On top cap 21, be provided with first endoporus 23 that runs through gas-liquid dispensing head 2, gas-liquid dispensing head 2 be circumferentially provided with a plurality of inner air vents 24, the outside of described inner air vent 24 is along a plurality of outer pores 25 of being circumferentially provided with of gas-liquid dispensing head 2; Described a plurality of inner air vent 24 is communicated with the annular space 22 between the first ejiction opening 11 and top cap 21, and described a plurality of outer pores 25 are communicated with the second ejiction opening 12 and the 3rd ejiction opening 13 respectively by the first through hole 14 and the second through hole 15 being arranged on nozzle 1.Inner air vent 24 and outer pore 25 in the present embodiment are 3, and are evenly distributed on circumference, can certainly adopt number more or still less.
One end of rifle body 3 is provided with a rifle body cavity 31, and a piston 6 is installed in rifle body cavity 31, and described piston 6 is connected with rifle body bonnet 5 by the first spring 7; Rifle body bonnet 5 is fixedly connected with rifle body 3; In the present embodiment, the end of rifle body 3 is provided with external screw thread, and the end of rifle body bonnet 5 is provided with female thread, and external screw thread and screw-internal thread fit screw and realize being fixedly connected with of rifle body bonnet 5 and rifle body 3.
Rifle pin 4 is through rifle body 3 and gas-liquid dispensing head 2, and the first endoporus 23 on one end and gas-liquid dispensing head 2 top caps 21 is sealed and matched, and the other end is fixedly connected with piston 6.There is a fifth hole piston 6 inside in the present embodiment, the fifth hole that rifle pin 4 passes in piston 6, and by the protuberance radially arranging along rifle pin 4 41 and piston 6 clampings; On protuberance 41, be provided with screw thread, be also provided with screw thread on piston 6, be set with a nut 42 on the excircle of piston 6 and protuberance 41, piston 6 and protuberance 41 are all threaded connection with nut 42, and then have realized being fixedly connected with of rifle pin 4 and piston 6.
For the ease of the stroke of regulating piston 6, the end of described rifle body bonnet 5 is also provided with an adjusting nut 51, and the end of rifle body bonnet 5 is provided with a clematis stem hole, and adjusting nut 51 screws in clematis stem hole.When piston 6 outwards moves, nut 42 contacts with adjusting nut 51, thereby makes piston 6 stop motions, by regulating adjusting nut 51 to screw in the degree of depth in clematis stem holes, can realize the restriction to piston 6 strokes.Meanwhile, when making piston 6 motion, the gas between piston 6 and rifle body bonnet 5 can be discharged, and the inside of described adjusting nut 51 is provided with a venthole 53.
In order to guarantee the sealing of whole spray gun, the junction of described rifle pin 4 and rifle body 3 is provided with between 43, two sealing members 43 of two sealing members and is provided with the second spring 44, and fixing with rifle body 3 by the first locking nut 45.Sealing member 43 in the present embodiment is polytetrafluoroethylsealed sealed, and the first locking nut 45 is locked two sealing members 43, the sealing when guaranteeing rifle pin 4 motion.Described gas-liquid dispensing head 2 is provided with a sealing gasket 26 with contacting on end face of rifle body 3, offers a plurality of holes corresponding with inner air vent 24 and outer pore 25 positions, to prevent Leakage Gas on described sealing gasket 26.
The work process of seed-coating machine spray gun device of the present invention is as follows:
Start spray gun, open the control valve (electromagnetic valve) of the second trachea, thereby first form the shearing force of an atomization, after 10 seconds, open the control valve (electromagnetic valve) of the first trachea, to inlet, inject coating solution, and coating is carried out in formation spraying.
In whole coating process, the control valve (electromagnetic valve) of controlling the second trachea is always in running order, during clear rifle, as long as the control valve of the first trachea (electromagnetic valve) is closed and opened, just can reach the object of rifle clearly.
When coating finishes, first close the control valve (electromagnetic valve) of the first trachea, stop feed liquor, after 30 seconds, close again the control valve (electromagnetic valve) of the second trachea, complete coating.
The above is preferred embodiment of the present invention, and all equivalent variations of doing according to the present patent application the scope of the claims, all should belong to protection scope of the present invention.
Claims (7)
1. a seed-coating machine spray gun device, comprises nozzle, gas-liquid dispensing head, rifle body, rifle pin and rifle body bonnet; One end of rifle body is provided with a rifle body cavity, and a piston is installed in rifle body cavity, and described piston is connected with rifle body bonnet by the first spring; Rifle body bonnet is fixedly connected with rifle body;
It is characterized in that, on described nozzle, be provided with the first ejiction opening, the second ejiction opening and the 3rd ejiction opening, the first ejiction opening is positioned at the center of nozzle, the second ejiction opening and the 3rd ejiction opening are symmetricly set on the both sides of the first ejiction opening, and the central axis of the first ejiction opening, the second ejiction opening and the 3rd ejiction opening converges at a bit; Described nozzle is fixedly connected with gas-liquid dispensing head;
One end of described gas-liquid dispensing head is provided with a top cap, and described top cap stretches in the first ejiction opening of nozzle, and and the inwall of the first ejiction opening between form an annular space; The other end of gas-liquid dispensing head is fixedly connected with rifle body; On the cap of top, be provided with first endoporus that runs through gas-liquid dispensing head, gas-liquid dispensing head be circumferentially provided with a plurality of inner air vents, the outside of described inner air vent is along a plurality of outer pores of being circumferentially provided with of gas-liquid dispensing head; Described a plurality of inner air vent is communicated with the annular space between the first ejiction opening and top cap, and described a plurality of outer pores are communicated with the second ejiction opening and the 3rd ejiction opening respectively by the first through hole and the second through hole being arranged on nozzle;
Described rifle body is provided with an admission chamber away from the end of rifle body cavity, the outside of admission chamber is circumferentially provided with an inner groove along rifle body, the outside of inner groove is circumferentially provided with an outer groove along rifle body, and the side of rifle body is provided with the first air inlet, the second air inlet and inlet; The position of inner groove is corresponding with the position of inner air vent, and the position of outer groove is corresponding with the position of outer pore; The first air inlet is all communicated with inner groove and rifle body cavity by third through-hole, and the second air inlet is communicated with outer groove by fourth hole; Inlet is communicated with admission chamber; The first air inlet is connected with the first trachea, is provided with the first control valve on the first trachea; The second air inlet is connected with the second trachea, is provided with the second control valve on the second trachea;
Described rifle pin is through rifle body and gas-liquid dispensing head, and one end and gas-liquid distribute the first endoporus on the cap of the crown to be sealed and matched, and the other end is fixedly connected with piston.
2. seed-coating machine spray gun device according to claim 1, is characterized in that, the end of described rifle body bonnet is also provided with an adjusting nut for limited piston stroke.
3. seed-coating machine spray gun device according to claim 2, is characterized in that, the inside of described adjusting nut is provided with a venthole.
4. seed-coating machine spray gun device according to claim 1, is characterized in that, the junction of described rifle pin and rifle body is provided with two sealing members, is provided with the second spring, and fixes by the first locking nut between two sealing members.
5. seed-coating machine spray gun device according to claim 1, is characterized in that, described inner air vent and outer pore are 3.
6. seed-coating machine spray gun device according to claim 1, is characterized in that, described nozzle and gas-liquid dispensing head are fixed together by the second locking nut being arranged on nozzle excircle.
7. seed-coating machine spray gun device according to claim 1, is characterized in that, described gas-liquid dispensing head is provided with a sealing gasket with contacting on end face of rifle body, offers a plurality of holes corresponding with described inner air vent and described exogenous QI hole site on described sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210268974.9A CN102784059B (en) | 2012-07-31 | 2012-07-31 | Spray gun device for coating machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210268974.9A CN102784059B (en) | 2012-07-31 | 2012-07-31 | Spray gun device for coating machine |
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| Publication Number | Publication Date |
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| CN102784059A CN102784059A (en) | 2012-11-21 |
| CN102784059B true CN102784059B (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210268974.9A Active CN102784059B (en) | 2012-07-31 | 2012-07-31 | Spray gun device for coating machine |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111384B (en) * | 2013-01-31 | 2016-06-22 | 宁波华宝石节能科技股份有限公司 | For making the blackwash sprayer of patch stone |
| CN107260547A (en) * | 2017-07-26 | 2017-10-20 | 南京淮腾机械科技有限公司 | A kind of closed is whitewashed seed-coating machine automatically |
| CN107875020A (en) * | 2017-11-07 | 2018-04-06 | 陈晓盛 | A kind of coating equipment in sugar production line for being used for medical treatment |
| CN115944535B (en) * | 2023-03-15 | 2023-06-13 | 江中药业股份有限公司 | Spray gun device for medicine granulator or coating machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007021459A (en) * | 2005-07-21 | 2007-02-01 | Meiji Kikai Seisakusho:Kk | Automatic spray gun |
| CN201064561Y (en) * | 2007-06-28 | 2008-05-28 | 上海现代中医药技术发展有限公司 | Thin film coating spray gun |
| WO2011049081A1 (en) * | 2009-10-20 | 2011-04-28 | フロイント産業株式会社 | Spray gun |
| CN202751600U (en) * | 2012-07-31 | 2013-02-27 | 浙江迦南科技股份有限公司 | Coating machine spray gun device |
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