CN104399155B

CN104399155B - The pneumatic continuous needleless syringe of gas control sliding spool valve control

Info

Publication number: CN104399155B
Application number: CN201410669914.7A
Authority: CN
Inventors: 肖雅俊; 肖长正
Original assignee: 肖雅俊
Current assignee: Wuhan Zhenghua Precision Machinery Technology Development Co., Ltd
Priority date: 2014-11-21
Filing date: 2014-11-21
Publication date: 2017-03-29
Anticipated expiration: 2034-11-21
Also published as: CN104399155A

Abstract

The present invention relates to a kind of pneumatic continuous needleless syringe of gas control sliding spool valve control, which includes the gas control sliding spool valve in main element, pilot valve and the control valve chest (29) being placed in main element, by triggering pilot valve, pilot valve controls compressed gas-driven gas control sliding spool valve, and gas control sliding spool valve makes the administration liquid pressurization of air cylinder driven plunger displacement pump；When pilot valve is triggered using trigger, realize quick percussion；When pilot valve is triggered using handle, realize quick percussion and automatic firing.The characteristics of present invention has that percussion is rapid, jet parameters are stable, continuously injects reproducible, safe and reliable, can medicinal liquid is accurate in the way of high pressure fluid column jet, quantitatively, quickly be expelled to the internal of humans and animals, when injecting to humans and animals, can automatic firing completes injection in micro-hole jet shower nozzle and humans and animals effective contact and in the state of having certain compression.

Description

The pneumatic continuous needleless syringe of gas control sliding spool valve control

Technical field

The present invention relates to syringe, particularly a kind of use gas control sliding spool valve control air cylinder driven plunger displacement pump administration liquid pressurization Continuous needleless syringe is a kind of for giving people integrated, portable, the continuous type gas with liquid medicine injection in animal body Dynamic needleless injector.

Background technology

Functionally similar continuous needleless syringe, is that hand-operated valve control air cylinder driven plunger displacement pump administration liquid adds at present Pressure, its defect are that during percussion, the speed of cocking action is inconsistent conveniently due to hand-operated valve, cause each percussion Jet parameters are unstable, the poor repeatability of multiple injection, especially when injecting to animal, as hand-operated valve fires relatively slow, quilt Injection receptor mismatches easy movement, makes injection operation difficulty larger.Additionally, because the problem of structure also has following defect：

1. due to using the valve body combined as a whole with cylinder block, make the sealing surface manufacturing process difficulty of traveller valve seat compared with Greatly.

2. locking nut is set on the external screw thread of air accumulator due to using, locking nut must be tightened, just be can ensure that Air accumulator will not operationally be moved.

3., because plunges pump body is overall structure, make the yield rate of production process not high, so as to increase manufacturing cost.

4. the poor repeatability of multiple injection.

5. in-convenience in use, sometimes because mistakenly hit send out cause the phenomenon of liquid waste to occur.

" continuous needleless syringes of reducing supercharge cylinders " (patent No. that Chinese patent CN103230633A documents are announced 201310126074.6), because its structure is not all roses, more or less there is the defect of the above.

The content of the invention

The technical problem to be solved is：For the problem for overcoming above-mentioned prior art to exist, there is provided Yi Zhongqi The pneumatic continuous needleless syringe of control sliding spool valve control, the syringe can be such that percussion fires rapidly, every time using gas control sliding spool valve Jet parameters it is stable, multiple injection reproducible；It is after the method for the pressure touch-control gas control sliding spool valve that moved forward using handle, real Show automatic firing and completed injection, reduce injection operation difficulty.

The present invention solves its technical problem and adopts following technical scheme：

The pneumatic continuous needleless syringe of the gas control sliding spool valve control that the present invention is provided, which is provided with main element, pilot valve With the gas control sliding spool valve in the control valve casing body being placed in main element, by triggering pilot valve, pilot valve controls compressed gas Gas control sliding spool valve, gas control sliding spool valve is driven to make the administration liquid pressurization of air cylinder driven plunger displacement pump；When triggering pilot valve using trigger, realize It is quick to fire；When pilot valve is triggered using handle, realize quick percussion and automatic firing.

Described gas control sliding spool valve is by work before No. one traveller, traveller sealing ring, No. one traveller being mounted in inside traveller valve seat Blocking technological holes screw, No. one traveller return spring composition after skill hole closure screw, No. one traveller.

The inflated for deflated pilot valve by two position three-way valve in front end of No. one described traveller is controlled, and makes the traveller end face Air pressure changes, to control movement of the traveller in traveller valve seat.

Described gas control sliding spool valve is by No. two travellers, traveller sealing ring, No. two traveller returns being mounted in inside traveller valve seat Spring is constituted.

The rear end of No. two described travellers is deflated or is inflated and controlled by the pilot valve of two position three-way valve, makes the traveller end face Air pressure changes, to control movement of the traveller in traveller valve seat.

Described control valve chest, cylindrical shape inside which, equipped with traveller valve seat；It is cylinder or prism outside which Shape, is equipped with handle outside this.

Described handle, can be along the axis of control valve chest to control the cylindroid outside valve chest as the track that slides axially Direction slide anteroposterior in certain stroke, but radially can not swing, behind handle in cylinder with control between valve chest It is provided with handle return spring.

Trigger is installed with trigger bearing pin on the strong point that described handle upper end is forward extended out, the lower end of trigger is in finger ring Can swing, trigger is provided with No. two trigger return springs, and there is the pole for playing safety effect for forward extending out the front end of trigger.

The external cylindrical surface stage casing of the air accumulator in main element is equipped with sealing ring after sealing ring before air accumulator, air accumulator, front Sealing position is not isometrical afterwards, and air accumulator is made itself and ladder after compressed gas are imported using the axial compressive force difference of not isometrical generation Shape cylinder auto lock.

Liquid plunger displacement pump in main element, which is provided with liquid valve valve body, the 3rd sealing gasket, plunger displacement pump threeway, the 4th close Packing, plunger displacement pump body, they are sequentially connected integral by screw thread；Spiral shell is housed on the external cylindrical surface in plunger displacement pump body stage casing The plunger displacement pump ring flange of stricture of vagina connection.

The present invention has following major advantage compared with prior art：

First, the technology difficulty that the sealing surface of traveller valve seat of the prior art is manufactured can be overcome.

The control valve chest of this syringe is built-in with traveller valve seat.Traveller valve seat is into cylindrical shape, cylindrical to be provided with multiple sealings Ring recess, is equipped with traveller valve seat exterior seal ring respectively, makes traveller valve seat separate to form each independent gas in control valve chest interior sealing Road, and traveller valve seat is retained in control valve casing body, so that the sealing surface manufacturing process difficulty of traveller valve seat significantly drops It is low, manufacture requirements can be just met with common numerically controlled lathe.

Second, convenient install air accumulator：

The air accumulator external cylindrical surface stage casing of this syringe is equipped with sealing ring after sealing ring before air accumulator, air accumulator so as to Stepped cylinder inner wall sealing, sealing position is not isometrical in front and back, and before stepped cylinder with air accumulator, sealing ring corresponding position is straight Footpath is little, and after stepped cylinder with air accumulator, sealing ring corresponding position diameter is big, will using the axial compressive force difference of not isometrical generation Air accumulator makes which with stepped cylinder auto lock after compressed gas are imported.

Third, because using split type plunger displacement pump, making the yield rate of production process be effectively controlled, reducing manufacturing cost.

This syringe is above-mentioned manufacture difficulty of the prior art larger plunges pump body to be resolved into by plunger displacement pump sheet Body, plunger displacement pump threeway, liquid valve valve body, plunger displacement pump ring flange single-piece pass through screw thread and the 3rd sealing gasket, the 4th sealing after manufacturing Pad is formed by connecting, it is therefore an objective to be greatly lowered manufacturing process difficulty, makes the yield rate of production process be effectively controlled, and reduces Manufacturing cost.

The structure of the plunges pump body of this syringe is：Plunger displacement pump body interior has one through circular pump chamber in front and back, anterior There is outer silk tooth, connect the internal thread tooth of plunger displacement pump threeway rear end with the tooth, and the 4th sealing is equipped with its tooth tail end step Pad so as to which junction seals；In the middle part of plunger displacement pump body, external cylindrical surface has outer silk pressure, the step for having positioning after silk tooth, by plunger Pump ring flange center internal thread tooth is connected thereto and becomes an entirety, and makes plunger displacement pump body and plunger displacement pump by positioning step Ring flange circumferential plane is vertical and concentric with the positioning step of plunger displacement pump ring flange, has for before dummy piston on plunger displacement pump ring flange The ring flange passage of end air pressure.The internal thread pressure of its front end of plunger displacement pump threeway is connected with the outer silk tooth of liquid valve valve rear end, and The 3rd sealing gasket is equipped with its tooth tail end step so as to which junction seals.

Fourth, multiple injection is reproducible.

In this syringe, by triggering pilot valve, pilot valve control compressed gas-driven traveller, the control of gas control sliding spool valve The method of air cylinder driven plunger displacement pump administration liquid pressurization, quickly can fire, rapidly that medicinal liquid is accurate in the way of high pressure fluid column jet Calibrated shot makes the jet parameters of each percussion stable, multiple injection reproducible to the internal of humans and animals.

The percussion principle of this syringe is：The air pressure of the traveller front end or rear end in gas control sliding spool valve is controlled using pilot valve Situation, makes traveller become an air rammer in traveller valve seat, and in following embodiments, traveller quality is 20g, pilot valve Triggering stroke is 1.5mm, and the diameter of traveller sealing ring is 11.7mm, and the effective pneumatic area of traveller end face is：1.07cm², it is sliding The elastic force of post return spring is selected in 1-1.2Kg (power), and actual motion resistance of the traveller in traveller valve seat is 0.6-0.8Kg (power), the compressed gas supply pressure of employing is 4Kg/cm²——7.5Kg/cm².As the 4Kg/ that supply pressure is selected lower limit cm²During percussion, the pneumatic thrust that traveller is subject to is：1.07cm²×4Kg/cm²=4.28Kg (power), and now overcome needed for traveller The resistance of motion and the elastic force maximum of traveller return spring be：0.8Kg (power)+1.2Kg (power)=2Kg (power), the axle of traveller To the vector minima of thrust it is：4.28Kg (power) -2Kg (power)=2.28Kg (power), 2.28Kg (power) only act on quality For the traveller axial direction of 20g, make traveller slide axially within the extremely short time other end, make gas control sliding spool valve moment standard-sized sheet, As the 7.5Kg/cm that supply pressure is selected the upper limit²During percussion, the vector of the axial thrust of traveller is：6.03Kg (power) is sliding Post sliding speed can be faster.As pilot valve triggering stroke is shorter, so percussion is rapid, after setting supply pressure, traveller is every Secondary to fire what the pneumatic thrust being subject to was no variation in, the kinestate of traveller will not also change, so each percussion can be made Jet parameters are stable, multiple injection it is reproducible.This working condition is that manual sliding spool valve is beyond one's reach.

In above-mentioned prior art with the present invention, using sliding spool valve control cylinder administration liquid supercharging, traveller kinestate The kinestate of piston is directly connected to, whether the speed of traveller motion, the speed of motion every time are consistent, direct relation The repeatability of stability, multiple injection to jet parameters.

Above-mentioned prior art uses the stage casing linkage traveller with trigger, is promoted with trigger and move after traveller, quickly need to be detained Trigger action can just make percussion rapid, need one-time continuous cocking once, finger fatigue to make respectively during practical operation use The action speed of secondary cocking is inconsistent, it is impossible to which guarantee effectively can be injected every time, cause jet parameters unstable, repeated Difference.

Fifth, it is easy to use, reliable, will not mistakenly hit waste medicinal liquid.

This syringe using can forward slip handle, and use Trigger safety lock handle, cocking needed during percussion simultaneously Driving handle reach simultaneously, the method for automatically beginning to fire after handle rear end pressure contacts pilot valve are hit rapidly, every time in percussion The jet parameters sent out are stable, it is multiple injection it is reproducible on the basis of, be further able in micro-hole jet shower nozzle and humans and animals Skin effective contact and realize that automatic firing completes injection in the state of having certain compression, improve injection safety, can By property, effectiveness, prevent mistakenly hit from sending out and waste medicinal liquid.Especially animal inconvenience is being implemented to grasp injection in the case that protection is fixed Make simple easy.

Description of the drawings

Fig. 1 is No. one trigger of embodiment 2 in the front view for waiting cock.

Fig. 2 is No. two triggers of embodiment 3, two trumpeter's handles are waiting the front view of cock.

Fig. 3 is No. two triggers of embodiment 3, two trumpeter's handles cock front view.

Fig. 4 gas delivery hoses connect needleless injector with pressure regulator valve and the schematic diagram of compressed gas cylinder.

Fig. 5 is the sectional view that embodiment 2 waits cock.

Fig. 6 is the sectional view that embodiment 3 waits cock.

Fig. 7 is block assembly sectional view.

Fig. 8 is linkage set front view.

Fig. 9 is linkage set A-A axial sectional views.

Figure 10 is linkage set left view.

Figure 11 is short air accumulator sectional view.

Figure 12 is long air accumulator sectional view.

Figure 13 is liquid plunger displacement pump sectional view.

Figure 14 is the cylinder operated control valve of embodiment 2 in the sectional view for waiting cock.

Figure 15 is the sectional view of the cylinder operated control valve in cock of embodiment 2.

Figure 16 is the cylinder operated control valve of embodiment 3 in the sectional view for waiting cock.

Figure 17 is the sectional view of the cylinder operated control valve in cock of embodiment 3.

Figure 18 is No. one pilot valve of embodiment 2 in the sectional view for waiting cock.

Figure 19 is the sectional view of No. one pilot valve in cock of embodiment 2

Figure 20 is No. two pilot valves of embodiment 3 in the sectional view for waiting cock.

Figure 21 is the sectional view of No. two pilot valves in cock of embodiment 3.

In figure：1. air accumulator；2. block assembly；3. one property syringe；4. one property injector clamping seat；5. medicinal liquid is defeated Send flexible pipe；6. feed liquor valve body；7. plunger displacement pump threeway；8. liquid valve valve body；9. micro-hole jet shower nozzle；10. plunger displacement pump body； 11. tensioned screws；12. plunger displacement pump ring flanges；13. finger rings；14. No. one triggers；15. 1 trumpeter's handles；16. No. two triggers；17. 2 Trumpeter's handle；18. gas pressure regulating valves；19. gas delivery hoses；20. compressed gas cylinders；21. nuts；22. rear piston seal circles；23. Piston；24. linkage sets；24-1. linkage set lateral openings；24-2. linkage set hollow molded cavities；25. stepped cylinders；26. pistons Front sealing ring；27. plungers；28. circular cylinder ports；29. control valve chests；30. first blocking technological holes screws；31. Steam vent；32. traveller valve seats；33. master cylinder ports；34. second blocking technological holes screws；35. traveller valve seat external seals Circle；36. the 3rd blocking technological holes screws；37. control valve air inlets；38. gas-tpe fittings；Sealing ring after 39. air accumulators；40. storages Gas tank venthole；Sealing ring before 41. air accumulators；42. annular stop circles；Terminal screw after 43. plunges pump bodies；44. plunger guide sets； 45. liquid feed valve steel balls；46. first sealing gaskets；47. feed liquor valve springs；48. liquid valve springs；49. second sealing gaskets；50. go out liquid Valve steel ball；51. the 3rd sealing gaskets；52. the 4th sealing gaskets；53. ring flange passages；54. outer spiral shell disks；55. plunger sealing washers； 56. No. one trigger bearing pins；57. No. one pilot valve air supply channels；Blocking technological holes screw before 58. No. one travellers；59. No. one travellers Middle air flue venthole；60. No. one travellers；61. traveller sealing rings；Air flue air inlet in the middle of 62. No. one travellers；63. No. one cunnings Blocking technological holes screw after post；64. No. one traveller return springs；65. No. one control jam pot covers block up screw；66. No. one control jam pot covers Stifled screw passage；67. insurance steps；68. No. two trigger bearing pins；69. No. two trigger return springs；70. No. two control jam pot covers Stifled screw sealing ring；71. No. two control jam pot covers block up screw；72. No. two traveller front apertures；Air flue outlet in the middle of 73. No. two travellers Hole；74. No. two travellers；Air flue air inlet in the middle of 75. No. two travellers；76. No. two traveller return springs；77. No. two pilot valves are supplied Gas passage；78. 2 trumpeter's handle return springs；79. No. one the second sealing rings of pilot valve；80. No. one the first sealing rings of pilot valve； 81. No. one pilot valve inlet channels；82. No. one the 3rd sealing rings of pilot valve；83. No. one pilot valve bodies；84. No. one pilot valves Housing；85. No. one guide's valve outlet holes；86. No. one guide's valve springs；87. No. one guide's valve spring retainers；88. knob nuts； 89. No. one pilot valve front valve cores；90. No. one the 4th sealing rings of pilot valve；91. No. one the first air chambers of pilot valve；92. No. one guides The 5th sealing ring of valve；93. No. one pilot valve inner spools；94. No. one the 6th sealing rings of pilot valve；95. No. one the second gas of pilot valve Room；Air chamber passage before 96. No. one travellers；97. No. one pilot valve body rear end caps；98. No. two guide's valve spring retainers；99. No. two Guide's vent passageway；100. No. two guide's valve chests；101. No. two the first sealing rings of pilot valve；102. No. two pilot valves second Sealing ring；103. No. two pilot valve inlet channels；104. No. two pilot valve bodies；105. No. two the 3rd sealing rings of pilot valve； 106. No. two traveller rear gas chamber passages；107. No. two pilot valve air chambers；108. No. two the 4th sealing rings of pilot valve；109. No. two elder generations Pilot valve valve element；110. No. two guide's valve springs.

Specific embodiment

The pneumatic continuous needleless syringe of the gas control sliding spool valve control that the present invention is provided, is in Chinese patent application publication No. CN103230633A (the patent No.s：201310126074.6) basis of " continuous needleless syringes of reducing supercharge cylinders " announced On improve.The improvement part is mainly traveller valve seat, traveller, air accumulator, liquid plunger displacement pump, trigger and handle, in addition Guide's valve member is increased again.

The pneumatic continuous needleless syringe of the gas control sliding spool valve control that the present invention is provided, is to control cylinder with gas control sliding spool valve The continuous needleless syringe for driving plunger displacement pump administration liquid to pressurize is a kind of for giving people the one with liquid medicine injection in animal body Change, portable, continuous type gas-driven needle-less syringe.Whole syringe includes main element, pilot valve and is placed in main body The gas control sliding spool valve in control valve casing body in part, by triggering pilot valve, pilot valve control compressed gas-driven gas control is slided Column valve, gas control sliding spool valve make the administration liquid pressurization of air cylinder driven plunger displacement pump；When pilot valve is triggered using trigger, realize quick percussion； When pilot valve is triggered using handle, realize quick percussion and automatic firing.

The gas control sliding spool valve full name is air pressure control type slide column type reversal valve, and its function is to control the piston fortune in cylinder Dynamic state, and piston movement direction can be changed, its specific work process is：Slided to dress by No. one pilot valve or No. two pilot valves The front end or rear end of No. one traveller or No. two travellers in column valve seat is inflated for deflated, makes the axial direction of No. one traveller or No. two travellers The atmospheric pressure state of end face changes, and causes No. one traveller or No. two travellers to slide axially under compressed gas promotion, makes gas control traveller The air guide channel of valve changes, and further controls the piston movement situation in cylinder.

With reference to embodiment and accompanying drawing, the invention will be further described, but is not limited to the following content.

Embodiment 1：

The pneumatic continuous needleless syringe of the gas control sliding spool valve control that the present embodiment 1 is provided, its structure such as Fig. 1 to Figure 21 institutes Show, be provided with main body, pilot valve and gas control sliding spool valve, wherein main body include power gas source, medicinal liquid storage device, block assembly 2, Air accumulator 1, liquid plunger displacement pump, micro-hole jet shower nozzle 9, finger ring 13, trigger and handle.In addition to power gas source, other part wholes Integrated installation forms the pneumatic continuous needleless note of an integrated hand-held gas control sliding spool valve control on block assembly 2 Emitter.

The pilot valve, is the two position three-way valve controlled using manpower, manually controls, change its conducting state, make Which gives the front end or rear end of No. one traveller 60 or No. two travellers 74 inflated for deflated.Can using No. one pilot valve (Fig. 7, Figure 14, Figure 18), which is passed through 84 rear end external screw thread of No. one guide's valve chest and is connected with the female thread of control valve chest 29 front end, No. one guide Valve is mounted in the front end (detailed in Example 2) of control valve chest 29；Can also be using No. two elder generations different from No. one guide's valve arrangement Pilot valve (Fig. 7, Figure 16, Figure 20), which passes through the interior spiral shell of 100 front end external screw thread of No. two guide's valve chests and 29 rear end of control valve chest Stricture of vagina connects, and No. two pilot valves are mounted in the rear end (detailed in Example 3) of control valve chest 29.

The gas control sliding spool valve, can adopt No. one gas control sliding spool valve (Fig. 7, Figure 14), and which is mounted in control valve chest 29 (detailed in Example 2)；Can also be using No. two gas control sliding spool valves (Fig. 7, Figure 16) different from No. one gas control traveller valve arrangement, its It is also contained in controlling in valve chest 29 (detailed in Example 3).

The power gas source, is shown in Fig. 4, can fill compression carbon dioxide from compressed gas cylinder 20；Power gas source The compressed gas cylinder or compressed air pump for filling other safe gas can be selected.Power gas source outfan passes through gas pressure regulating valve 18 The pressure of controlled output gas, the outfan for connecting gas pressure regulating valve 18 with gas delivery hose 19 are connect to the trachea of air accumulator 1 38.

The medicinal liquid storage device, is shown in Fig. 1 and Fig. 2, can be by one property syringe 3,5, one property of medicinal liquid delivery hose Injector clamping seat 4 is constituted.One property injector clamping seat 4 is arranged on the top of block assembly 2, and medicinal liquid is stored in standard universal Inside one property syringe 3, one time property syringe 3 is stuck in one property injector clamping seat 4, and easily can be dismounted, and uses medicinal liquid One property syringe 3 and feed liquor valve body 6 are connected by delivery hose 5.The medicinal liquid storage device also can be defeated with longer medicinal liquid The connection medicine bottle of flexible pipe 5 is sent to be carried by operator.

The structure of the block assembly 2 is made up of upper and lower two part as shown in Fig. 1-Fig. 3 and Fig. 7：Upper part is rank Trapezoidal cylinder 25, lower part are the control valve chests 29 being arranged in parallel with stepped cylinder 25, in circle inside control valve chest 29 Barrel shape, outside can be cylindrical, or prismatic.

25 inner cylinder face of the stepped cylinder is waney stairstepping cylinder, before and after inner cylinder face into a ladder, its Leading portion diameter is less than back segment diameter, is the stairstepping face of cylinder that diameter is not waited, and is formed for piston 23, rear piston seal circle 22, is lived The stepped cylinder cylinder that sealing ring 26 slides before plug, is built-in with：Sealing ring 26, rear piston seal circle 22, connection before piston 23, piston Dynamic set 24 and nut 21.Piston 23 it is cylindrical into ladder circle cylindricality, its diameter respectively to should be less than the internal diameter of stepped cylinder 25, There is groove respectively in the front end for being close to piston 23 and the rear end for being close to piston 23, be respectively provided with groove and seal and can slide with cylinder inner wall Sealing ring 26, rear piston seal circle 22 before dynamic piston.

The piston 23 is built-in with linkage set 24, and linkage set 24 is connected as one with piston 23 by screw thread, and uses nut 21 are locked.The structure of the linkage set 24 is provided with linkage set hollow molded cavity 24-2, its axial direction as shown in Fig. 8 to Figure 10, inside Section shape exports little the inside greatly as shown in the linkage set hollow molded cavity 24-2 in Fig. 9, and its front end exit has one section of diameter to be less than The step of 27 rear end sphere diameter of plunger, makes 27 rear end spheroid of plunger deviate from from 24 front ends of linkage set vertically, the inside Diameter be slightly larger than 27 rear end sphere diameter of plunger, make 27 rear end spheroid of plunger have in linkage set 24 one section can vertically freely The stroke of slip.Linkage set 24 radially has a diameter to be slightly larger than plunger in the middle part of the corresponding slidably stroke in its side The circular port of 27 rear end spherical diameters, and start axially disposed width slightly larger than 27 back segment cylinder of plunger from 24 front ends of linkage set The groove of diameter, the groove are connected with circular port, are made linkage cover 24 sides and are formed linkage set lateral opening 24-1 (Fig. 8), and the opening can The back segment of plunger 27 is made to enter linkage set 24 from 24 sides of linkage set, such plunger 27 easily can be placed in linkage set 24 Or take out from linkage set 24.

In stepped cylinder 25, there is female thread its front end, by outer spiral shell disk 54, tensioned screw 11 and plunger displacement pump ring flange 12 connections, and being provided with positioning step positions plunger displacement pump ring flange 12.

There is female thread in 25 its rear end of stepped cylinder, rear end female thread is connected with the external screw thread of air accumulator 1, with air accumulator After front sealing ring 41, air accumulator, 39 corresponding inner cylinder face of sealing ring is also waney stairstepping face of cylinder, in stairstepping gas It is provided with control valve air inlet 37, air accumulator inside cylinder 25 before correspondence air accumulator after sealing ring 41, air accumulator between sealing ring 39 Air accumulator venthole 40 is set in the position of correspondence control valve air inlet 37, in the position of air accumulator venthole 40 along air accumulator It is cylindrical to have a circumferential groove, enable air accumulator 1 reliable gas circuit be obtained with control valve air inlet 37 be connected.

Three gas channels are provided between the control valve chest 29 and stepped cylinder 25, are that circular cylinder enters respectively Steam vent 28, master cylinder port 33, control valve air inlet 37, in the lower section in 29 corresponding three above hole of control valve chest, Three fabrication holes stayed during promising manufacture three above gas channel, respectively with the first blocking technological holes screw 30, the second work Skill hole blocks screw 34, the 3rd blocking technological holes screw 36 by blocking technological holes.

Seeing Fig. 7, traveller valve seat 32 being built-in with control valve chest 29,32 one-tenth of traveller valve seat is cylindric, cylindrical to be provided with multiple Seal groove (only indicates one of those) in Fig. 7, be equipped with traveller valve seat exterior seal ring 35 respectively, makes traveller valve seat 32 in control 29 interior sealing of valve chest is separated to form each independent gas circuit, and traveller valve seat 32 is retained in control valve chest 29, in control Valve chest 29 and position shown in the correspondence Fig. 7 of traveller valve seat 32 are provided with steam vent 31, and steam vent 31 is from traveller valve seat 32 through cunning Column valve seat 32, control valve chest 29 lead to outside equipment, for equipment aerofluxuss, a hole are only shown in figure, can be set in the region The steam vent for putting multiple micro-apertures is used for aerofluxuss and noise elimination.

See Fig. 7, Figure 14, Figure 16, in traveller valve seat 32, be provided with multiple circular ring slots, the part of its projection and corresponding traveller Sealing ring 61 is contacted and forms slidable sealing.Traveller valve seat 32 is in the circular cylinder port positioned at control valve chest 29 28th, master cylinder port 33,37 corresponding position of control valve air inlet have corresponding pore and its UNICOM.

See Fig. 1, Fig. 2, Fig. 5 and Fig. 6, finger ring 13 is equipped with below block assembly 2, finger ring 13 passes through screw and cylinder Body component 2 connects.

Referring to Figure 11, Figure 12, Figure 14, Figure 16, air accumulator 1 can be cylindrical, hollow tank body, and there is gas-tpe fitting 38 rear end, Front end is equipped with the annular stop circle 42 with elastic buffer position-limiting action, for 23 buffer limit of piston.

1 external cylindrical surface stage casing of air accumulator is equipped with before air accumulator sealing ring 39 after sealing ring 41, air accumulator so as to stairstepping 25 inner wall sealing of cylinder, sealing position is not isometrical in front and back, and before stepped cylinder 25 with air accumulator, 41 sealing position of sealing ring is straight Footpath is little, and after stepped cylinder 25 with air accumulator, 39 sealing position diameter of sealing ring is big, using the axial compressive force of not isometrical generation Air accumulator 1 is made which with 25 auto lock of stepped cylinder after compressed gas are imported by difference.

1 back segment external cylindrical surface of air accumulator has external screw thread, is connected with the screw-internal thread fit of 25 rear end of stepped cylinder, Ke Yitong The precession depth small range for overregulating screw thread accurately adjusts injection dosage, can arrange the air accumulator 1 of more different lengths with right The setting of different injection dosages is answered, for example：1ml、1.5ml、2ml…….Figure 11 show relatively short air accumulator 1, figure 12 show relatively long air accumulator 1.

The structure of the liquid plunger displacement pump is as shown in figure 13, using split-type structural, by plunger displacement pump body 10, plunger displacement pump three Logical 7, terminal screw 43, liquid feed valve after plunger displacement pump ring flange 12, plunger 27, plunger guide set 44, plunger sealing washer 55, plunges pump body Valve body 6, feed liquor valve spring 47, liquid feed valve steel ball 45, liquid valve spring 48, liquid valve steel ball 50, liquid valve valve body 8 and connecting pole First sealing gasket 46 of plug pump group part, the second sealing gasket 49, the 3rd sealing gasket 51, the 4th sealing gasket 52 are constituted.

By liquid valve valve body 8, the 3rd sealing gasket 51, plunger displacement pump threeway 7, the 4th sealing gasket 52,10 single-piece of plunger displacement pump body It is sequentially connected by screw thread integral after manufacture, plunger displacement pump ring flange 12 is threadedly attached in into 10 stage casing of plunger displacement pump body On external cylindrical surface.Purpose is to reduce manufacturing process difficulty, makes the yield rate of production process be effectively controlled, reduces being manufactured into This.

The structure of the plunger displacement pump body 10 as shown in figure 13, has one through circular pump chamber in front and back inside which, front portion has Outer silk tooth, connects the internal thread tooth of 7 rear end of plunger displacement pump threeway with the tooth, and is equipped with the 4th sealing gasket at its tooth tail end step 52 so as to which junction seals；In the middle part of which, external cylindrical surface has outer silk pressure, the step for having positioning after silk tooth, by plunger displacement pump ring flange 12 center internal thread teeth are connected thereto and become an entirety, and make plunger displacement pump body 10 and plunger displacement pump flange by positioning step 12 circumferential plane of disk is vertical and concentric with the positioning step of plunger displacement pump ring flange 12；Plunger displacement pump ring flange 12 is provided with lives for balance The ring flange passage 53 of plug front end air pressure.

There is internal thread tooth described 10 its rear end of plunger displacement pump body, and two plunger guide sets are housed before the internal thread pressure of rear end 44th, plunger sealing washer 55, are connected with 10 rear end internal thread tooth of plunger displacement pump body with terminal screw after plunges pump body 43, by plunges pump body Terminal screw 43 is fixed plunger guide set 44 and plunger sealing washer 55 afterwards.

The plunger guide set 44 has two, sees Figure 13, before and after being separately mounted to plunger sealing washer 55.

As shown in figure 13, the internal thread of its front end presses the outer silk with 8 rear end of liquid valve valve body to the structure of the plunger displacement pump threeway 7 Tooth connects, and at its tooth tail end step is equipped with the 3rd sealing gasket 51 so as to which junction seals；The internal thread of side face port thereon Pressure is connected with the outer silk tooth of 6 lower end of feed liquor valve body, and centre is equipped with the first sealing gasket 46 seals its junction；And in liquid feed valve Liquid feed valve steel ball 45, feed liquor valve spring 47 are equipped with successively in valve body 6.

See Figure 13, the internal thread tooth of outer 9 rear end of silk tooth connection micro-hole jet shower nozzle of 8 front end of liquid valve valve body, and go out liquid The end face of 8 front end of valve body is equipped with the second sealing gasket 49, be equipped with the die cavity of liquid valve valve body 8 successively liquid valve steel ball 50, Liquid valve spring 48.

The micro-hole jet shower nozzle 9, its female thread are connected (Figure 13) with the outer silk tooth of 8 front end of liquid valve valve body；Its front end Centre can have forward the cylinder for stretching out, and cylinder front end is spherical in shape, cylindrical hollow, have the passage projected for medicinal liquid, passage Front end has jet microporous.

The structure of the plunger 27 is as shown in Figure 13, Fig. 7：Pump chamber diameter of its leading portion diameter less than plunger displacement pump body 10, The leading portion is stretched in the pump chamber of plunger displacement pump body 10, and constitutes slidable sealing with plunger sealing washer 55；Its stage casing limited location Step, after limited step plane is contacted with the rear end face of terminal screw after plunges pump body 43 limits plunger 27 and moves further along It is dynamic；There is a ball its rear end, for being connected with linkage set 24.

The plunger displacement pump ring flange 12, is shown in Fig. 1, Fig. 2, Fig. 5, Fig. 6, Figure 13, has a diameter larger than 25 front end of stepped cylinder Aperture, be provided with positioning step with 25 front end matching part of stepped cylinder, outer spiral shell disk 54 passes through external screw thread and stairstepping 25 front end female thread connection of cylinder.There is ring flange passage 53 and the confession for dummy piston front end air pressure on plunger displacement pump ring flange 12 The hole of tensioned screw 11 is pierced into, plunger displacement pump ring flange 12 is connected with outer spiral shell disk 54 with tensioned screw 11.

Embodiment 2：

The present embodiment 2 provide gas control sliding spool valve control pneumatic continuous needleless syringe, be provided with No. one pilot valve, No. one The main element of gas control sliding spool valve and structure same as Example 1.It is specific as follows：

See Fig. 7, Figure 14, Figure 18, two ends are provided with female thread, spiral shell in 29 rear end of control valve chest before and after control valve chest 29 The external screw thread that stricture of vagina blocks up screw 65 with No. one control jam pot cover is connected, and makes No. one control jam pot cover block up screw 65 and is mounted in control valve chest 29 Rear end, the stifled screw 65 of No. one control jam pot cover are provided with the stifled screw passage of the control jam pot cover communicated with air 66.

See Figure 18, Figure 19, No. one pilot valve can be by：84, No. one pilot valve body 83, one of No. one guide's valve chest Number pilot valve inner spool 93, one of pilot valve front valve core 89, one of guide's valve spring retainer 87, one of guide's valve spring 86, one Pilot valve body rear end cap 97, the second sealing ring of pilot valve 79 of the first sealing ring of pilot valve 80, one of round end nut 88, one, No. one pilot valve 92, No. one guide of the 5th sealing ring of the 4th sealing ring of pilot valve 90, one of the 3rd sealing ring of pilot valve 82, one The 6th sealing ring 94 of valve is constituted.

See Fig. 7, Figure 14, Figure 18, have external screw thread outside No. one 84 rear end large cylinder of guide's valve chest, with No. one guide's valve chest 84 external screw thread couple with control 29 front end female thread of valve chest, and in No. one pilot valve of control valve chest 29 front end face setting the Three sealing rings 82 seal junction, and No. one pilot valve is mounted in the front end of control valve chest 29.

See Figure 18, Figure 19, No. one guide's valve chest 84 is in step-like cylinder, the little cylinder in No. one 84 front end of guide's valve chest is For No. one pilot valve front valve core 89 interior slip guide pin bushing, No. one 84 rear end large cylinder of guide's valve chest is built-in with No. one pilot valve The first sealing ring of pilot valve 80, one of pilot valve body rear end cap 97, one of pilot valve inner spool 93, one of valve body 83, one 79, No. one pilot valve 92, No. one the 6th sealing ring 94 of pilot valve of the 5th sealing ring of the second sealing ring of pilot valve.

See Figure 18, Figure 19, No. one 83 external cylindrical surface of pilot valve body is equipped with 80, No. one elder generation of No. one the first sealing ring of pilot valve The 5th sealing ring 92 of pilot valve, by 80, No. one the 5th sealing ring 92 of pilot valve of No. one the first sealing ring of pilot valve by No. one guide Valve body 83 is sealed and is retained in No. one guide's valve chest 84.

See Figure 18, Figure 19, No. one pilot valve body rear end cap 97 is by external screw thread and No. one 83 rear end of pilot valve body It is threadedly coupled and is placed in No. one pilot valve body 83, seal junction with No. one the second sealing ring of pilot valve 79, is formed No. one the second air chamber of pilot valve 95.

See Figure 18, Figure 19, from the beginning of No. one the second air chamber of pilot valve 95, through No. one pilot valve body rear end cap 97, one Number pilot valve body 83 and No. one guide's valve chest 84 are provided with No. one pilot valve inlet channel 81, No. one pilot valve inlet channel 81 Communicate with No. one pilot valve air supply channel 57 outside No. one guide's valve chest 84.

See Figure 18, on No. one pilot valve inner spool 93, be equipped with No. one the 6th sealing ring 94 of pilot valve, No. one pilot valve the 6th Sealing ring 94 is not axially movable on the face of cylinder of No. one pilot valve inner spool 93, and is collectively disposed at No. one the second gas of pilot valve In room 95, diameter of No. one 93 point diameter of pilot valve inner spool less than No. one 83 corresponding aperture of pilot valve body, No. one pilot valve 93 front end of inner spool is extended in No. one the first air chamber of pilot valve 91, in No. one elder generation by the hole in the middle of No. one pilot valve body 83 In the case that the front end of pilot valve inner spool 93 is not withstood by No. one pilot valve front valve core 89, while in No. one the second air chamber of pilot valve In 95 under the promotion of air pressure, No. one pilot valve inner spool 93 and No. one the 6th sealing ring 94 of pilot valve are by No. one the second gas of pilot valve Room 95 and No. one sealing cut-off of the first air chamber of pilot valve 91.

See Figure 18, Figure 19, No. one pilot valve front valve core 89, profile is stepped cylinder axis.Its rear end is in No. one elder generation In the first air chamber of pilot valve 91, the step of its rear end makes which deviate from from No. one guide's valve chest 84, and at its step It is provided with air slot.Its stage casing face of cylinder is provided with groove, and the groove is provided with No. one the 4th sealing ring 90 of pilot valve, valve before No. one pilot valve Internal diameter of the diameter of 89 cylinder of core less than No. one 84 front end guide pin bushing of guide's valve chest, its gap are sufficient for No. one pilot valve control Air-flow passes through.Its front end is stretched out outside No. one guide's valve chest 84 and has screw thread, and No. one elder generation is cased with the cylinder that its front end is stretched out Pilot valve spring base 87, is equipped with No. one guide's valve spring 86 between No. one guide's valve chest 84 and No. one guide's valve spring retainer 87, It is connected locking with No. one 89 nose threads of pilot valve front valve core with round end nut 88.

See Figure 18, No. one guide's valve spring 86 makes No. one pilot valve front valve core 89 be maintained at forward under not cock Return state.

See Figure 18, Figure 19, garden cylinder is made up of two-stage nitration in No. one 84 guide pin bushing of guide's valve chest, and leading portion diameter is than back segment diameter Greatly, when No. one the 4th sealing ring 90 of pilot valve is at its leading portion position, No. one the first air chamber of pilot valve 91 and No. one pilot valve are arranged Between pore 85, air-flow can pass through, when No. one the 4th section position behind of sealing ring 90 of pilot valve, the sealing ring and back segment Diameter smaller part position forms sealing, and between No. one the first air chamber of pilot valve 91 and No. one guide's valve outlet hole 85, air-flow cannot lead to Cross.

See Figure 19, No. one pilot valve front valve core 89 can be along the axial forward and backward cunning of 84 guide pin bushing inner cylinder face of No. one guide's valve chest Dynamic, its stroke can promote No. one pilot valve inner spool 93 to be moved rearwards by, and make No. one the second air chamber of pilot valve 95 and No. one guide 91 UNICOM of the first air chamber of valve.

See Fig. 7, Figure 14, No. one gas control sliding spool valve can be by：Traveller valve seat 32, No. one traveller 60, traveller sealing ring 61st, 63 groups of blocking technological holes screw after 58, No. one traveller of blocking technological holes screw before 64, No. one traveller of No. one traveller return spring Into.Traveller valve seat 32 is placed in control valve chest 29.Six traveller sealing rings 61 are separately mounted to cylindrical six of No. one traveller 60 In individual groove, No. one traveller 60 is placed in traveller valve seat 32 with traveller sealing ring 61.No. one traveller return spring 64 is placed in No. one cunning The rear end of post 60.

See Figure 14, Figure 15, in No. one traveller 60, have intermediate gas flow path, No. one traveller 60 is provided with one in position shown in Figure 14 Air flue venthole 59 in the middle of air flue air inlet 62 and No. one traveller in the middle of number traveller.Two end of intermediate gas flow path in No. one traveller 60 Fabrication hole is blocked with blocking technological holes screw 63 after 58, No. one traveller of blocking technological holes screw before No. one traveller respectively.

See Figure 15, Figure 19, after 60 front end air chamber of No. one traveller is inflated by No. one pilot valve, No. one traveller 60 is moved back by It is dynamic.

See Figure 14, Figure 18, when after 60 front end air chamber of No. one traveller is deflated by No. one pilot valve which is communicated with air, one Number traveller 60 moves forward return in the presence of No. one traveller return spring 64.

See Figure 14-15, No. one traveller 60 leads in two positions in front and back, the air-flow for respectively constituting two-way difference conducting state Road.

See Fig. 1, Fig. 5, there is one trumpeter's handle 15 being fixed together with block assembly 2 lower section of block assembly 2. Before one trumpeter's handle 15, No. one trigger 14 is equipped with.The upper end of No. one trigger 14 is connected to cylinder block with No. one trigger bearing pin 56 On the fulcrum of component 2, constitute and can put in front and back in finger ring 13 around the flexible connection of the fulcrum, the lower end of No. one trigger 14 It is dynamic.

See Figure 15, Figure 19, pull No. one trigger 14 backward, the stage casing of No. one trigger 14 can be by round end nut 88 to pusher It is dynamic, make No. one pilot valve front valve core 89 promote No. one pilot valve inner spool 93, the pressure in No. one the second air chamber of pilot valve 95 backward Contracting gas enters No. one the first air chamber of pilot valve 91, is inflated to No. one 60 front end of traveller by air chamber passage 96 before No. one traveller, No. one traveller 60 is subject to axial air pressure to promote, and overcomes the elastic force of No. one traveller return spring 64 and sliding-frictional resistance rapid backward It is mobile, needleless injector is quickly fired.

See Fig. 5, Figure 14, Figure 18, after No. one trigger 14 are discharged, No. one trigger 14,88, No. one pilot valve bullet of knob nut The 4th sealing ring 90 of pilot valve of pilot valve front valve core 89, one of spring abutment 87, one is under No. one 86 elastic force of guide's valve spring effect Return forward, the compressed gas of No. one 60 front end of traveller are by 96, No. one the first air chamber of pilot valve of air chamber passage before No. one traveller 91st, No. one guide's valve outlet hole 85 is discharged, and now No. one 60 two ends air pressure of traveller restores balance, and No. one traveller 60 is in No. one traveller In the presence of return spring 64, wait cock is moved forward to.

So arrange advantage be：No. one pilot valve is triggered by No. one trigger 14, No. one pilot valve controls compressed gas No. one traveller 60, No. one gas control sliding spool valve is driven to control cylinder, can be when human or animal be of short duration static, in micro-hole jet shower nozzle 9 It is quick with realization in the state of human or animal's skin effective contact to fire.

No. one pilot valve of the use that the present embodiment 2 is provided controls No. one traveller 60 of compressed gas-driven, No. one gas control sliding spool valve The continuous needleless syringe of control air cylinder driven plunger displacement pump administration liquid pressurization, quickly can fire, rapidly by medicinal liquid with high pressure fluid column The mode accurate quantification of jet is expelled to the internal of humans and animals.

The syringe of the present embodiment 2 has following major advantage compared with prior art：

The present embodiment triggers No. one pilot valve by No. one trigger 14, and No. one pilot valve controls No. one cunning of compressed gas-driven Post 60, the method for No. one gas control sliding spool valve control air cylinder driven plunger displacement pump administration liquid pressurization, quickly can fire, make injection it is rapid, The jet parameters of percussion are stable, multiple injection reproducible every time.

The pneumatic continuous needleless syringe that the present embodiment 2 is provided, its course of work are as follows：

See Figure 15, Figure 19.During percussion, No. one trigger 14 is pulled backward with handss, No. one trigger 14 promotes knob nut backward 88, cause No. one pilot valve front valve core 89 to promote No. one pilot valve inner spool 93 to be moved rearwards by, now No. one the first gas of pilot valve Passage between room 91 and No. one guide's valve outlet hole 85 is closed by No. one the 4th sealing ring 90 of pilot valve, at the same compressed gas from Air flue venthole 59, one in the middle of 62, No. one traveller of air flue air inlet in the middle of 1 Jing of air accumulator control valve 37, No. one traveller of air inlet Number 95, No. one the first gas of pilot valve of the second air chamber of pilot valve of pilot valve inlet channel 81, one of pilot valve air supply channel 57, one Before the traveller of room 91, one, air chamber passage 96 enters into the front end face of No. one traveller 60, and make that a traveller 60 obtains backward is pneumatic Thrust, this thrust make No. one traveller 60 rapid more than the sliding-frictional resistance of the elastic force and traveller of No. one traveller return spring 64 It is moved rearwards by.

See Fig. 7, Figure 13, Figure 15.When No. one traveller 60 moves to position shown in Figure 15, compressed gas are from 1 Jing of air accumulator Control valve air inlet 37, master cylinder port 33 enters into the master cylinder below of piston 23, promotes piston 23 to travel forward, with The linkage set 24 that piston 23 is integrally connected promotes forward plunger 27, the reach of plunger 27 to make high pressure is produced in liquid plunger displacement pump, while Feed liquor valve body 6 is closed under the intrinsic pressure power effect of elastic force and liquid plunger displacement pump of feed liquor valve spring 47 by liquid feed valve steel ball 45, Under the intrinsic pressure power effect of liquid plunger displacement pump, liquid valve steel ball 50 overcomes the elastic force of liquid valve spring 48 to move forward off liquid valve valve The sealing surface of body 8 opens liquid outlet channel, and the jet microporous high speed of medicinal liquid Jing micro-hole jets shower nozzle 9 is projected and enters into humans and animals In vivo.

See Fig. 7, Figure 13, Figure 15.During injection, the gas Jing circular cylinders of 23 side circular cylinder of piston enter row Pore 28 is excluded by steam vent 31, and the gas Jing ring flanges passage 53 of 23 front end of piston is excluded.

See Figure 15.After after the step in the middle part of plunger 27 is with plunges pump body, the rear end face of terminal screw 43 is contacted, plunger 27 stops Only move forward, injection terminates.

See Figure 14, Figure 18.After the completion of injection, No. one trigger 14, No. one trigger 14,88, No. one guide of knob nut are discharged The 4th sealing ring 90 of pilot valve of pilot valve front valve core 89, one of valve spring retainer 87, one is by the elastic force of No. one guide's valve spring 86 Wait cock is back into forward, 93, No. one the 6th sealing ring 94 of pilot valve of No. one pilot valve inner spool is in No. one pilot valve In second air chamber 95 under the promotion of air pressure forward, No. one the 6th sealing ring 94 of pilot valve is by No. one the second air chamber of pilot valve 95 and one Number the first air chamber of pilot valve 91 separates, and makes the compressed gas cannot be from 95 to No. one pilot valve of No. one the second air chamber of pilot valve first Air chamber 91.The gas of No. one 60 front end of traveller first air chamber of pilot valve 91, one of air chamber passage 96, one before No. one traveller Guide's valve outlet hole 85 is discharged, and makes the air pressure thrust-balancing of No. one 60 axial direction of traveller, and No. one traveller 60 is in No. one traveller return bullet Move forward under the promotion of 64 elastic force of spring.

See Fig. 7, Figure 14, the gas when No. one traveller 60 moves to position shown in Figure 14, behind piston 23 in master cylinder Discharged by steam vent 31 through master cylinder port 33.

See Fig. 7, Figure 14, while compressed gas are from air flue air inlet 62, one in the middle of control valve air inlet No. one traveller of 37 Jing In the middle of number traveller, air flue venthole 59, circular cylinder port 28 enter into the circular cylinder of 23 side of piston, and piston 23 exists Under the promotion of the pneumatic thrust of side circular cylinder, piston 23 is moved rearwards by.

See Figure 13, Figure 14, during being moved rearwards by, the negative pressure that 23 front end face of piston is formed passes through ring flange to piston 23 53 inspiration air of passage, eliminates the negative pressure resistance of 23 front end face of piston.

See Figure 13, the linkage set 24 being integrally connected with piston 23 pulls back plunger 27, and moving after plunger 27 makes liquid plunger Negative pressure is produced in pump, while negative pressure collective effect of the liquid valve steel ball 50 in the elastic force and liquid plunger displacement pump of liquid valve spring 48 It is lower to contact sealing with the sealing surface of liquid valve valve body 8, liquid feed valve steel ball 45 overcome under the suction function in liquid plunger displacement pump into The elastic force of liquid valve spring 47 leaves sealing surface opens feed pathway, and medicinal liquid Jing medicinal liquids delivery hose 5, feed liquor valve body 6 is inhaled Enter in liquid plunger displacement pump.

See Figure 14, when piston 23 moves to position shown in Figure 14, the rear end face of piston 23 is contacted with annular stop circle 42 Afterwards, piston 23 terminates being moved rearwards by, while liquid plunger pumping enters medicinal liquid termination, when the air accumulator 1 or tune of changing different length The precession depth of whole air accumulator 1 is accurately controlled the stroke of piston 23, while controlling 27 stroke of plunger, makes each injection Amount is precisely controlled.

Embodiment 3：

The pneumatic continuous needleless syringe of the gas control sliding spool valve control that the present embodiment 3 is provided, is provided with 2 structure of embodiment not No. two pilot valves together, No. two gas control sliding spool valves, No. two triggers 16, two trumpeter's handles 17, No. two trigger return springs 69, two trumpeters Handle return spring 78, and other main elements of structure same as Example 1.It is specific as follows：

See Fig. 7, Figure 16, be provided with female thread in control valve chest 29 rear and front end, control 29 front end female thread of valve chest with No. two control jam pot covers block up the external screw thread connection of screw 71, and blocking up screw sealing ring 70 with No. two control jam pot covers seals junction.

See Figure 20, No. two pilot valves can be by：No. two guide's valve spring retainers 98, two of guide's valve chest 100, two 104, No. two pilot valve cores 109 of pilot valve body, the pilot valve first of guide's valve spring 110, two of knob nut 88, two are close Pilot valve 105, No. two the 4th sealing rings of pilot valve of the 3rd sealing ring of the second sealing ring of pilot valve 102, two of seal 101, two 108 compositions.

See Fig. 7, Figure 16, there is external screw thread No. two 100 front ends of guide's valve chest, with outside No. two 100 front ends of guide's valve chest Screw thread is connected with control 29 rear end female thread of valve chest, is tightly connected position with No. two the second sealing rings of pilot valve 102, by No. two Pilot valve is mounted in the rear end of control valve chest 29.

See Figure 20, No. two guide's valve chests 100 are in step-like cylinder, and the little cylinder in its rear end is No. two pilot valve cores 109 The guide pin bushing of slip, its front end large cylinder are built-in with the first sealing ring of pilot valve 101, two of No. two pilot valve bodies 104, two elder generation The 3rd sealing ring 105 of pilot valve, by 101, No. two the 3rd sealing rings 105 of pilot valve of No. two the first sealing rings of pilot valve by No. two elder generations Pilot valve valve body 104 is sealed and is retained in No. two guide's valve chests 100, No. two pilot valve bodies 104 and No. two guide's valve chests 100 form No. two pilot valve air chambers 107, are provided with from 107 to No. two cunnings of No. two pilot valve air chambers on No. two pilot valve bodies 104 No. two traveller rear gas chamber passages 106 of 74 rear end of post.

See Figure 20, at the step of No. two 109 external cylindrical surfaces of pilot valve core, be equipped with No. two the 4th sealing rings 108 of pilot valve, No. two the 4th sealing rings 108 of pilot valve are not axially movable on the face of cylinder of No. two pilot valve cores 109, and are collectively disposed at two In number guide's valve chest 100, the external diameter of No. two the 4th sealing rings 108 of pilot valve is more than No. two 100 rear end roundlets of guide's valve chest The internal diameter of cylinder guide pin bushing.

See Figure 16, Figure 20, No. two pilot valve bodies 104 and No. two guide's valve chests 100 in the corresponding portion shown in Figure 20 Position is provided with No. two pilot valve inlet channels 103, and No. two pilot valve inlet channels 103 pass through No. two guide's valve chests 100 and No. two No. two pilot valve air supply channels 77 outside guide's valve chest 100 are communicated.

See Figure 21, there are tapered face, the tapered valve seat of No. two pilot valve bodies 104 of correspondence in No. two 109 front ends of pilot valve core. When No. two pilot valve cores 109 are moved forward makes its tapered face completely attach to the tapered valve seat of No. two pilot valve bodies 104, two Number pilot valve inlet channel 103 is closed, and No. two guide's vent passageways 99 are opened.

See Figure 20, the diameter of No. two 109 back end cylindricals of pilot valve core is less than the little cylinder in No. two 100 rear ends of guide's valve chest The internal diameter of guide pin bushing, its gap are sufficient for passing through for No. two pilot valve control air-flows.No. two 109 tail ends of pilot valve core stretch out two Number little cylinder guide pin bushing in 100 rear end of guide's valve chest, has screw thread in its tail end, and No. two guide's valve spring retainers 98 are enclosed within its circle for stretching out Post position, is provided with No. two guide's valve springs 110 between No. two guide's valve chests 100 and No. two guide's valve spring retainers 98, then uses Round end nut 88 is connected locking with the threads of No. two pilot valve cores 109.

See Figure 20, No. two guide's valve springs 110 make No. two pilot valve third members 109 in wait percussion shape backward State, makes No. two the 4th sealing rings 108 of pilot valve close No. two guide's vent passageways 99.

See Fig. 7, Figure 16, No. two gas control sliding spool valves can be by：Traveller valve seat 32, No. two travellers 74, traveller sealing rings 61st, No. two traveller return springs 76 are constituted.Six traveller sealing rings 61 are separately mounted in No. two six cylindrical grooves of traveller 74, No. two travellers 74 are placed in traveller valve seat 32 with traveller sealing ring 61, after No. two traveller return springs 76 are placed in No. two travellers 74 End.

See Figure 16, in No. two travellers 74, have intermediate gas flow path, No. two travellers 74 are provided with No. two cunnings in position shown in Figure 16 Air flue venthole 73 in the middle of air flue air inlet 75 and No. two travellers in the middle of post.Intermediate gas flow path front-end process in No. two travellers 74 Hole without closure, for the inflation of No. two 74 front ends of traveller.

See Figure 17, when after 74 rear end air chamber of No. two travellers is deflated by No. two pilot valves which is communicated with air, No. two cunnings Post 74 overcomes the elastic force of No. two traveller return springs 76 and sliding friction resistance in the case where the air pressure of 74 front end air chamber of No. two travellers is promoted Power is moved rearwards by.

See Figure 16, after 74 rear end air chamber of No. two travellers is inflated by No. two pilot valves, No. two travellers 74 are returned in No. two travellers Return is moved forward in the presence of the spring 76 of position.

See Figure 16, Figure 17, No. two travellers 74 respectively constitute the air-flow of two-way difference conducting state in two positions in front and back Passage.

See Fig. 2, Fig. 3, Fig. 6, Figure 16, Figure 17, the two trumpeters handle 17 is arranged on the lower section of block assembly 2, two trumpeters Handle 17, can be along the axis direction of control valve chest 29 certain to control the cylindroid outside valve chest 29 as the track that slides axially Slide anteroposterior in stroke, but radially can not swing, set and control valve chest 29 between in cylinder behind two trumpeter's handles 17 Two trumpeter's handle return springs 78 being equipped with, position of the two trumpeter's handles 17 in the case where cannot get forward thrust in rear end is made.

See Fig. 2, Fig. 3, Fig. 6, Figure 16, Figure 17, No. two triggers 16 are arranged on before two trumpeter's handles 17, No. two triggers 16 upper end is connected to No. two trigger bearing pins 68 on the strong point that two trumpeter's handles, 17 upper end forward extends out, and composition can be around the fulcrum The flexible connection of rotation, the lower end of No. two triggers 16 can swing in finger ring 13.No. two triggers 16 are provided with No. two triggers Return spring 69, the front end of No. two triggers 16 have the pole for playing safety effect for forward extending out, when pulling No. two triggers 16 backward, The pole that No. two 16 front ends of trigger are stretched out leaves the insurance step 67 being provided below in cylinder block, discharges No. two triggers 16, No. two The self-return in the presence of No. two trigger return springs 69 of trigger 16.

See Figure 17, Figure 21, when contacting with human or animal's skin and moderately compressing in micro-hole jet shower nozzle 9, pull backward After No. two triggers 16, in the case where forward thrust is obtained, two trumpeter's handles 17 are along the axial direction of control valve chest 29 for two trumpeter's handles 17 Forward slip, No. two triggers 16 synchronous reach together with two trumpeter's handles 17, when two trumpeter's handles, 17 rear end is pressed onto round end nut 88 simultaneously No. two pilot valve cores 109 are promoted forward so as to after tapered face completely attaches to the tapered valve seat of No. two pilot valve bodies 104, The compressed gas of No. two 74 rear end air chambers of traveller pass through 106, No. two 99 rows of guide's vent passageway of No. two traveller rear gas chamber passages Go out, cause the compressed gas of the axial air pressure thrust disequilibrium of No. two travellers 74, No. two 74 front end air chambers of traveller to promote No. two Traveller 74 overcomes the elastic force of No. two traveller return springs 76 and sliding-frictional resistance to be moved rearwards by rapidly, makes needleless injector quick Percussion.

See Figure 16, Figure 20, when there is no effective contact with human or animal's skin in micro-hole jet shower nozzle 9, two trumpeter's handles 17 Cannot get thrust forward, two trumpeter's handles 17 are moved rearwards by the presence of the elastic force of two trumpeter's handle return springs 78, two trumpeters After round end nut 88 is left in 17 rear end of handle, No. two pilot valve cores 109 are returned in the presence of No. two guide's valve springs 110 backward Position, No. two the 4th sealing rings 108 of pilot valve close No. two guide's vent passageways 99, and No. two pilot valve inlet channels 103 lead to No. two traveller rear gas chamber passages 106 and No. two 74 rear end air chamber UNICOMs of traveller are crossed, after making compressed gas enter No. two travellers 74 Hold, now the axial air pressure thrust-balancing of No. two travellers 74, in the presence of No. two traveller return springs 76, before No. two travellers 74 Move on to wait cock.

No. two triggers are pulled backward when in micro-hole jet shower nozzle 9 with human or animal's skin effective contact and when moderately compressing 16, now two trumpeter's handles 17 in the case where being pushed away with handss forward and No. two triggers 16 can move forward together；When not pulling two During number trigger 16, two trumpeter's handles 17 are withstood and cannot be moved forward by the pole stretched out before No. two triggers 16, prevent percussion from carrying out；When micro- After hole fluid jet nozzle 9 is separated with the human or animal being injected, micro-hole jet shower nozzle 9 cannot get human or animal counteracting force, two Two trumpeter's handle return spring 78 that trumpeter's handle 17 is arranged in its back-end is moved rearwards by under acting on, and No. two pilot valves return to wait percussion State, stops injection.

So arrange advantage be：When micro-hole jet shower nozzle 9 is contacted with human or animal's skin and moderately compressed, detain backward No. two triggers 16 are moved, promotes forward two trumpeter's handles 17, two trumpeter's handle 17 forward slip, two trumpeter's handles, 17 rear end can trigger No. two Pilot valve, No. two pilot valves control No. two travellers 74 of compressed gas-driven, realize automatic firing.Pneumatic sliding spool valve makes percussion fast Speed, the jet parameters of percussion every time are stablized, continuously injection is reproducible.With No. two 16 safety lock of trigger, two trumpeter's handles 17, After No. two triggers 16 need to be pulled during percussion, the reach pressure striking of two trumpeter's handle 17 could be promoted to send out, this percussion method improves note The safety penetrated, reliability, effectiveness, prevent mistakenly hit from sending out and waste medicinal liquid.

When to compoundanimal liquid medicine injection, inconvenience sometimes is implemented protection to single animal and is fixed, and automatic firing can be right Animal inconvenience is implemented to make injection operation simply easy in the case that protection is fixed.

The pneumatic continuous needleless syringe of the pneumatic sliding spool valve control that the present embodiment 3 is provided, can fast and automatically by medicinal liquid with The mode accurate quantification of high pressure fluid column jet is expelled to the internal of humans and animals.

The pneumatic continuous needleless syringe that the present embodiment 3 is provided, compared with prior art with following major advantage：

The present embodiment using can forward slip two trumpeter's handles 17, and with No. two 16 safety lock of trigger, two trumpeter's handles 17, No. two triggers 16 need to be pulled during percussion and while promotes two trumpeter's handles 17 to move forward, side pressure contacts No. two guides after two trumpeter's handles 17 After valve, No. two pilot valves are triggered, No. two pilot valves control No. two travellers 74 of compressed gas-driven, automatically begin to percussion, are implementing The quick percussion of example 2, injection is rapid, percussion every time jet parameters are stable, it is multiple injection it is reproducible on the basis of, enter one With the skin effective contact of humans and animals and in the state of having certain compression, step can realize that automatic firing is complete in micro-hole jet shower nozzle Into injection, the safety of injection, reliability, effectiveness are improve, is prevented mistakenly hit from sending out and is wasted medicinal liquid.Especially to animal inconvenience Implement to make injection operation simply easy in the case that protection is fixed.

The pneumatic continuous needleless syringe that the present embodiment 3 is provided, its course of work are as follows：

See Fig. 3, Figure 13, Figure 16, Figure 17, during percussion, micro-hole jet shower nozzle 9 is withstood into human or animal to be injected, handss are used No. two triggers 16 are pulled backward, and No. two 16 front ends of trigger are left insurance step 67, now promote forward two trumpeter's handles 17, two trumpeters Handle 17 can be along the moved axially forward of control valve chest 29.Its front end is made to leave insurance step as do not pulled No. two triggers 16 backward 67, two trumpeter's handles 17 can not will now play control percussion along the slip axially forward of control valve chest 29, No. two triggers 16 Safety effect.

See Figure 17, Figure 21, after the rear end of two trumpeter's handles 17 moves forward compresses round end nut 88, now No. two pilot valves The tapered face seal of 109 front end of the valve element tapered valve seat of No. two pilot valve bodies 104, makes No. two pilot valve inlet channels 103 Separate with No. two pilot valve air chambers 107, No. two pilot valves of traveller rear gas chamber passage 106, two of 74 backend gas Jing of traveller two 107, No. two guide's vent passageways 99 of air chamber are discharged, due to No. two 74 front ends of traveller by No. two traveller front apertures 72 filled with pressure Contracting gas, the now axial air pressure thrust disequilibrium of No. two travellers 74, No. two travellers 74 overcome No. two traveller return springs 76 Elastic force be moved rearwards by rapidly, start automatic firing.

See Figure 13, Figure 17, when No. two travellers 74 move to position shown in Figure 17, compressed gas are controlled from 1 Jing of air accumulator Valve air inlet 37, master cylinder port 33 enter into the master cylinder below of piston 23, promote piston 23 to travel forward, with piston The 23 linkage sets 24 being integrally connected promote forward plunger 27, and the reach of plunger 27 makes high pressure is produced in liquid plunger displacement pump, while feed liquor Feed liquor valve body 6 is closed under the pressure effect in the elastic force and liquid plunger displacement pump of feed liquor valve spring 47 by valve steel ball 45, in liquid Under pressure effect in body plunger displacement pump, liquid valve steel ball 50 overcomes the elastic force of liquid valve spring 48 to move forward off liquid valve valve The sealing surface of body 8, opens liquid outlet channel, and the jet microporous high speed of medicinal liquid Jing micro-hole jets shower nozzle 9 projects and enters into people and move In object.

See Figure 13, Figure 17, during injection, the gas Jing circular cylinder ports of 23 side circular cylinder of piston 28 are excluded by steam vent 31, and the gas Jing ring flanges passage 53 of 23 front end of piston is excluded.

See Figure 13, Figure 17, after after the step in the middle part of plunger 27 is with plunges pump body, the rear end face of terminal screw 43 is contacted, plunger 27 stop moving forward, and injection terminates.

See Figure 16, Figure 20, after the completion of injection, micro-hole jet shower nozzle 9 leaves the human or animal being injected, two trumpeter's handle returns Spring 78 is moved after promoting two trumpeter's handles 17, and round end nut 88 separated with two trumpeter's handles 17, and No. two No. two pilot valve cores 109 are two It is moved rearwards by under the elastic force effect of number guide's valve spring 110, No. two the 4th sealing rings of pilot valve on No. two pilot valve cores 109 No. two pilot valve air chambers 107 are separated by 108 with No. two guide's vent passageways 99, the compressed gas Jing control valve in air accumulator 1 The cunning of pilot valve air chamber 107, two of pilot valve inlet channel 103, two of pilot valve air supply channel 77, two of air inlet 37, two Post rear gas chamber passage 106 enters into No. two 74 rear ends of traveller, now the axial air pressure thrust-balancing of No. two travellers 74, No. two travellers 74 move forward under the elastic force effect of No. two traveller return springs 76.

See Figure 16, the gas Jing master when No. two travellers 74 move to position shown in Figure 16, behind piston 23 in master cylinder Cylinder port 33 is discharged by steam vent 31.

See Figure 16, while compressed gas are from 75, No. two cunnings of air flue air inlet in the middle of control valve air inlet No. two travellers of 37 Jing In the middle of post, air flue venthole 73, circular cylinder port 28 enter into the side circular cylinder of piston 23, and piston 23 is in side Under the promotion of the pneumatic thrust of circular cylinder, piston 23 is moved rearwards by.

See Figure 13, Figure 16, during being moved rearwards by, the negative pressure that 23 front end face of piston is formed passes through ring flange to piston 23 53 inspiration air of passage, eliminates the negative pressure resistance of 23 front end face of piston.

See Figure 13, Figure 16, the linkage set 24 being integrally connected with piston 23 pulls back plunger 27, and moving after plunger 27 makes liquid Negative pressure is produced in plunger displacement pump, while negative pressure of the liquid valve steel ball 50 in the elastic force and liquid plunger displacement pump of liquid valve spring 48 is common Effect is lower to contact sealing with the sealing surface of liquid valve valve body 8, and liquid feed valve steel ball 45 is under the suction function in liquid plunger displacement pump gram The elastic force for taking feed liquor valve spring 47 leaves sealing surface and opens feed pathway, medicinal liquid Jing medicinal liquids delivery hose 5, feed liquor valve body 6 It is inhaled in liquid plunger displacement pump.

See Figure 16, when piston 23 moves to position shown in Figure 16, the rear end face of piston 23 is contacted with annular stop circle 42 Afterwards, piston 23 terminates being moved rearwards by, while liquid plunger pumping enters medicinal liquid termination, when the air accumulator 1 or tune of changing different length The precession depth of whole air accumulator 1 is accurately controlled the stroke of piston 23, while controlling 27 stroke of plunger, makes each injection Amount is precisely controlled.

Claims

1. a kind of pneumatic continuous needleless syringe of gas control sliding spool valve control, including main element, it is characterised in that be provided with guide Gas control sliding spool valve in valve and the control valve chest (29) that is placed in main element, by triggering pilot valve, pilot valve control pressure Contracting gas-powered gas control sliding spool valve, gas control sliding spool valve make the administration liquid pressurization of air cylinder driven plunger displacement pump；Pilot valve is triggered using trigger When, realize quick percussion；

Cylindrical shape inside control valve chest (29), equipped with traveller valve seat (32), is cylinder outside control valve chest (29) Or it is prismatic, handle is housed outside this, handle, can be along control to control the cylindroid outside valve chest (29) as the track that slides axially The axis direction of valve chest (29) processed slide anteroposterior in certain stroke, but radially can not swing, cylinder behind handle It is interior to be provided with handle return spring and control valve chest (29) between, when making handle triggering pilot valve by this way, realize Quick percussion and automatic firing.

2. pneumatic continuous needleless syringe according to claim 1, it is characterised in that described gas control sliding spool valve is by being mounted in Blocking technological holes screw (58), No. one cunning before No. one traveller (60), traveller sealing ring (61), No. one traveller inside traveller valve seat Blocking technological holes screw (63), No. one traveller return spring (64) composition after post.

3. pneumatic continuous needleless syringe according to claim 2, it is characterised in that before No. one described traveller (60) The inflated for deflated pilot valve by two position three-way valve in end is controlled, and is changed the air pressure of the traveller end face, is being slided with controlling the traveller Movement in column valve seat.

4. pneumatic continuous needleless syringe according to claim 1, it is characterised in that described gas control sliding spool valve is by being mounted in No. two travellers (74), traveller sealing ring (61), No. two traveller return spring (76) compositions inside traveller valve seat.

5. pneumatic continuous needleless syringe according to claim 4, it is characterised in that after No. two described travellers (74) End is deflated or is inflated and controlled by the pilot valve of two position three-way valve, changes the air pressure of the traveller end face, is being slided with controlling the traveller Movement in column valve seat.

6. pneumatic continuous needleless syringe according to claim 1, it is characterised in that described handle upper end is forward extended out The strong point on trigger is installed with trigger bearing pin (68), the lower end of trigger in the finger ring (13) can swing, trigger is provided with No. two trigger return springs (69), the front end of trigger have the pole for playing safety effect for forward extending out.

7. pneumatic continuous needleless syringe according to claim 1, it is characterised in that the air accumulator (1) in main element External cylindrical surface stage casing is equipped with sealing ring (39) after sealing ring (41) before air accumulator, air accumulator, and sealing position is not isometrical in front and back, utilizes Air accumulator (1) is made which be locked with stepped cylinder (25) automatically after compressed gas are imported by the axial compressive force difference of not isometrical generation Tightly.

8. pneumatic continuous needleless syringe according to claim 1, it is characterised in that the liquid plunger displacement pump in main element, Which is provided with liquid valve valve body (8), the 3rd sealing gasket (51), plunger displacement pump threeway (7), the 4th sealing gasket (52), plunger displacement pump body (10), they are sequentially connected integral by screw thread；Equipped with threaded connection on the external cylindrical surface in plunger displacement pump body (10) stage casing Plunger displacement pump ring flange (12).