CN202348796U - Gas jet-type negative pressure generator and gas jet-type negative pressure adjustor - Google Patents
Gas jet-type negative pressure generator and gas jet-type negative pressure adjustor Download PDFInfo
- Publication number
- CN202348796U CN202348796U CN2011203090891U CN201120309089U CN202348796U CN 202348796 U CN202348796 U CN 202348796U CN 2011203090891 U CN2011203090891 U CN 2011203090891U CN 201120309089 U CN201120309089 U CN 201120309089U CN 202348796 U CN202348796 U CN 202348796U
- Authority
- CN
- China
- Prior art keywords
- liquid jetting
- jetting device
- jet
- gas
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Nozzles (AREA)
Abstract
The utility model discloses a gas jet-type negative pressure generator and a gas jet-type negative pressure adjustor. According to the gas jet-type negative pressure generator, a conical adjusting rod is arranged in a jet device; the conical adjusting rod is matched with the nozzle of a jet cavity to form an annular jet orifice; the size of the annular jet orifice is adjusted by the relative movement between the conical adjusting rod and the nozzle on the jet cavity; and simultaneously, the gas jet-type negative pressure adjustor is formed on the basis of the scheme. According to the utility model, by directly adjusting the opening degree of the annular jet orifice of the jet device, the energy loss when the size of the jet orifice is adjusted is reduced; and the intensity of the negative pressure produced in a gas jet mode is controlled effectively, so negative pressure can be output under the condition of a small amount of power gas.
Description
Technical field
The utility model relates to gas jet type negative pressure generator and the medical vacuum suction of adopting the gas jet mode to produce negative pressure (vacuum) and uses the gas jet type draft regulator.
Background technique
The gas jet type negative pressure generator that adopts jet-type to produce negative pressure is compared with the vacuum pump negative pressure device, and gas jet type negative pressure generator device is simple, easy to use, cleaning.In the vacuum suction of various fields such as industry and medical treatment, the gas jet type negative pressure generator sourceof negative pressure of doing vacuum suction commonly used.
Present gas jet type negative pressure generator fixing jetburner liquid jetting device all, under the driving source of the gas of constant pressure, the peak suction value of jet-type negative pressure generator generation is uncontrollable.In the occasion that needs are regulated, can only be through throttling propellant source, the propellant pressure that reduces liquid jetting device reduces the negative pressure that negative pressure generator is produced.
Referring to Fig. 1, shown in it is at present common power side adjustments of gas liquid jetting device, and this liquid jetting device comprises suction port 1, nozzle 2, and air aspiration cavity 3, intakeport 4, trunnion 5, diffuser 6, air outlet 7, when needing to regulate, throttle valve 8 is added in power gas inlet.The area of injection orifice size of nozzle 2 is fixed.During work, propellant is inserted by suction port 1, is sprayed at a high speed by the spout of nozzle 2, gets into trunnion 5, through diffuser 6, from relief opening 7 ejections.Produce negative pressure at air aspiration cavity 3 simultaneously, intakeport 4 is produced attraction.If when needing to regulate negative pressure, through regulating throttle valve 8, the flow of control air inlet reduces the flow velocity of nozzle 2 ejections, thereby reduces the negative pressure value of air aspiration cavity 3.
Because the area of its jetburner is constant, the momentum VQ=Q in the nozzle exit unit time
2/ A or=kQ
2, become quadratic relationship (in the formula: V is a flow velocity, and Q is a flow, and A is the area of circulation, and k is the coefficient after simplifying) with the dynamic air-flow amount.When the dynamic air-flow amount reduces a half, the momentum of ejection is not linear the minimizing, but the minimizing of quadratic relationship, is reduced to original 1/4th.Especially in medical vacuum suction field, when the negative pressure value regulation range is big, when little negative pressure value is used; The pressure loss all focuses on the throttle valve 8, and the efficient of liquid jetting device significantly reduces, and the negative pressure generator performance seriously descends; Cause attracting flow significantly to reduce, can not satisfy the requirement of medical field.
For this reason, people have adopted another kind of regulating method, promptly directly at the intakeport of liquid jetting device with throttle valve adjustment intake or negative pressure, and do not control power gas consumption.
Referring to Fig. 2, it is depicted as at present suction side adjustments of gas liquid jetting device usually, and this liquid jetting device comprises suction port 1, nozzle 2, and air aspiration cavity 3, intakeport 4, trunnion 5, diffuser 6, air outlet 7, when needing to regulate, throttle valve 8 is added in the attraction side.The area of injection orifice size of nozzle 2 is fixed.During work, propellant is inserted by suction port 1, is sprayed at a high speed by the spout of nozzle 2, gets into trunnion 5, through diffuser 6, from relief opening 7 ejections.Produce negative pressure at air aspiration cavity 3 simultaneously, intakeport 4 is produced attraction.If when needing to regulate negative pressure, directly, control air-breathing flow and pressure through regulating throttle valve 8.Because the consumption of power is constant, even when little negative pressure value of needs or little gettering quantity, will consume the power under high negative pressure or the high flow capacity too, utilization ratio significantly reduces.The no matter actual demand negative pressure value of liquid jetting device of this structure how much, all will consume maximum power tolerance, and the negative pressure performance is to have satisfied, but energy waste is obvious, and Economy is relatively poor.
The model utility content
The utility model is to existing existing performance-adjustable difference of gas jet type negative pressure generator and problem such as waste energy, and a kind of gas jet type negative pressure generator is provided, its can regulate that can realize producing negative pressure with reduce the energy waste purpose.
In order to achieve the above object, the utility model adopts following technological scheme:
A kind of gas jet type negative pressure generator; Comprise a liquid jetting device; Said liquid jetting device is the perforation cylinder in five chambeies, comprises spray chamber, first air aspiration cavity, mixing chamber, diffusion chamber, exhaust cavity successively, and said spray chamber contains a nozzle; Said generator also comprises a tapered adjustable lever; Said tapered adjustable lever cooperates with said nozzle and forms the annular space that adjustments of gas flows, i.e. annular spray mouth, and the openings of sizes through the annular jetburner of adjusting that relatively moves between the nozzle on tapered adjustable lever and the spray chamber.
On the basis of such scheme; The utility model also provides a kind of gas jet type draft regulator, and said regulator comprises liquid jetting device, and said liquid jetting device is the perforation cylinder in five chambeies; Comprise spray chamber, first air aspiration cavity, mixing chamber, diffusion chamber, exhaust cavity successively, said regulator also comprises:
Valve body, said valve body are the perforation cylinder in three chambeies, set gradually snout cavity, second air aspiration cavity and outlet plenum, and the outlet plenum of said valve body cooperates with said liquid jetting device and joins, and make the first air aspiration cavity conducting on second air aspiration cavity and the liquid jetting device,
Jet-conditioning unit; Said jet-conditioning unit comprises tapered adjustable lever and the cylinder that is used to settle tapered adjustable lever; Said cylinder is provided with suction port; Be provided with the gas port with said suction port conducting in the body, said cylinder matches with the snout cavity of said valve body, said gas port and said spray chamber conducting; Said tapered adjustable lever cooperates formation annular spray mouth with the nozzle of said spray chamber, and regulates the openings of sizes of annular jetburner through relatively moving between the nozzle on tapered adjustable lever and the spray chamber.
As a preferred version of the utility model, said liquid jetting device is threaded with the outlet plenum of said valve body, makes liquid jetting device to move axially along valve body, and the snout cavity of said jet-conditioning unit and said valve body is affixed; Tapered adjustable lever in the said jet-conditioning unit is installed in the top of cylinder, and said suction port is arranged on the bottom of cylinder, and the bottom of said gas port is provided with a side gas port that is used for said spray chamber conducting at least.
As another preferred version of the utility model, the outlet plenum of said liquid jetting device and said valve body is affixed, and the snout cavity of jet-conditioning unit and said valve body is affixed; Tapered adjustable lever in the said jet-conditioning unit provides on cylinder, and can move axially along cylinder, and said suction port is arranged on the sidewall of cylinder, the direct and said spray chamber conducting of said gas port.
Further, also be provided with first adjusting knob on the said tapered adjustable lever.
As the another scheme of the utility model, said regulator also comprises second adjusting knob, and the afterbody of said second adjusting knob and said liquid jetting device joins.
Further, said second adjusting knob is the bell jar type, covers on the relief opening of exhaust cavity of liquid jetting device.
As the another scheme of the utility model, said regulator also comprises silencer, and said silencer is placed in the exhaust ports of the exhaust cavity of said liquid jetting device.
The utility model adopts a kind of can regulate annular spray mouth liquid jetting device, has overcome the problems referred to above.When directly adjusting jetburner area is regulated the flow of power gas, regulate the purpose that produces negative pressure thereby reach.The speed of jetburner is constant basically during adjusting, the energy loss when reducing regulated quantity, and the momentum VQ=kQ of jetburner unit time, linear with the dynamic air-flow amount.When the negative pressure regulation range was big, working efficiency changed little, even under a small amount of power gas; Also can produce the certain negative pressure value, obtain considerable attraction flow, regulate with propellant source throttling mode; Directly regulate with the throttle valve mode at intakeport and compare, saving ability effect is remarkable.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Fig. 1 is gas jet device commonly used (regulating the power side) work schematic representation;
Fig. 2 is gas jet device commonly used (regulate and attract side) work schematic representation;
Fig. 3 is total figure of regulator among the embodiment one;
Fig. 4 is valve body figure among the embodiment one;
Fig. 5 is controlling device figure among the embodiment one;
Fig. 6 is liquid jetting device figure among the embodiment one;
Fig. 7 is the work schematic representation of regulator among the embodiment one;
Fig. 8 is the work schematic representation of regulator among the embodiment two;
Fig. 9 is the performance comparison plotted curve of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
The utility model is to the existing existing problem of liquid jetting device; And a kind of novel gas jet type negative pressure generator is provided; It increases a jet-conditioning unit on the basis of existing liquid jetting device; Nozzle through on the spray chamber in this jet-conditioning unit and the liquid jetting device matches, and forms the adjustable nozzle of area of injection orifice.
For this reason; Jet-conditioning unit in the utility model comprises a tapered adjustable lever, and this tapered adjustable lever cooperates with nozzle on the spray chamber, passes nozzle one segment distance; Thereby form the annular spray mouth with nozzle, and regulate annular jetburner aperture through regulating the distance that tapered adjustable lever passes nozzle.
This structure can realize the aperture through direct adjusting liquid jetting device annular spray mouth, the energy loss when reducing adjusting with this, and the control gaseous mode of jet produces the purpose of the size of negative pressure effectively.
Moreover the utility model forms corresponding gas jet type draft regulator based on such scheme, and its practical implementation process is following:
Embodiment one
Referring to Fig. 3 to 6, the gas jet type draft regulator in this instance mainly is made up of valve body 1, liquid jetting device 3, jet-conditioning unit 2, adjusting knob 4 and silencer 5.
Referring to Fig. 4, valve body 1 is the perforation cylinder in three chambeies, and a side is that snout cavity 110, one sides are outlet plenum 130, and the centre is second air aspiration cavity 120, also is provided with pressure taps 121 and intakeport 122 with 120 conductings of second air aspiration cavity on this cylinder.Simultaneously, this instance is provided with screw thread at the right-hand member of the inwall of outlet plenum 130.
Referring to Fig. 6, liquid jetting device 3 is the perforation cylinder in five chambeies, in cylinder, is disposed with spray chamber 310, the first air aspiration cavitys 332, mixing chamber 333, diffusion chamber 334, exhaust cavity 335.Offer the air intake passage 331 that is no less than on first air aspiration cavity 332 in the liquid jetting device 3; These air intake passage 331 guiding outsides 341; So that first air aspiration cavity 332 communicates with second air aspiration cavity 120 on the valve body 1, and exhaust cavity 335 directions are consistent with valve outlet chamber 130 directions.
Moreover, be provided with the adjusting screw thread 342 of the above-mentioned threads engaged on the inwall with valve body 1 outlet plenum 130 in this instance in the relevant position, the outside of cylinder.Afterbody at liquid jetting device 3 is provided with corresponding linking department 350.
Referring to Fig. 5, jet-conditioning unit 2 integral body are the tapered adjustable lever 222 of top band, and the bottom is brought the cylinder of gas port into.This tapered adjustable lever 222 matches with the nozzle 320 of spray chamber 310 bottoms (right part among Fig. 6) of liquid jetting device 3, and can be in this nozzle 320 move left and right, even also can stretch out its right-hand member one segment distance.Because the cross section of taper adjustable lever 222 is circular, and, be different along the diameter in the cross section of axial direction; And nozzle 320 is circular, like this outer circumferential face of adjustable lever 222 just can with nozzle 320 formation annular spaces, just formed annular spray mouth 10; Like this; When tapered adjustable lever 222 during with respect to nozzle 320 move left and right, the diameter of the outer peripheral surface portion of the tapered adjustable lever 222 that matches with nozzle 320 will change, and the sectional area of above-mentioned formation annular spray mouth 10 can change; Therefore; Through regulating the move left and right of tapered adjustable lever 222, regulate its distance and just can regulate the openings of sizes of annular jetburner 10, thereby reach the effect of regulating negative pressure through nozzle 320 with respect to nozzle 320.
Further, whole jet-conditioning unit 2 is the air input joint shape, and cooperates with valve body snout cavity 110, and it mainly comprises holding part 220 and linkage section 221 two-part.Wherein, holding part 220 matches with valve body snout cavity 110, through it jet-conditioning unit 2 is placed in the valve body 1, is provided with suction port 210 in the bottom of holding part 220 simultaneously.Like this, the suction port 210 of jet-conditioning unit 2 just replaces the suction port of spray chamber 310.
Be provided with gas port 211 in the linkage section 221; Suction port 210 conductings on this gas port 211 and the holding part 220; The bottom of while gas port 211; Just the transition position between linkage section 221 and tapered adjustable lever 222 is provided with one or more side gas port 212, with gas port 211 with liquid jetting device 3 on spray chamber 310 conductings, then with 10 conductings of annular spray mouth.
For adjusting knob 4, its integral body is the bell jar type, and its bottom joins with the linking department 350 of liquid jetting device 3 afterbodys, thereby covers on the relief opening 344 of liquid jetting device 3 exhaust cavitys 335.
Referring to Fig. 3; Silencer 5 adopts porous sponge shape muffler material; Place in the bell jar of 343 of bell jar type adjusting knob 4 and liquid jetting device middle outlet sections; After gas was discharged from the relief opening of liquid jetting device 3 344, the noise reduction through the porous sponge shape muffler material of silencer 5 reached the purpose that reduces noise.
The embodiment of this instance is following:
Referring to Fig. 7; Liquid jetting device 3 through the screw thread on the inwall of the adjusting screw thread on it 342 and valve body 1 outlet plenum 130 match with; Thereby liquid jetting device 3 is placed in valve body 1 outlet plenum 130; Make it can be, make second air aspiration cavity, 120 conductings on first air aspiration cavity 332 and the valve body 1 on it simultaneously along the axial move left and right of valve body 1.
Jet-conditioning unit 2 matches with valve body snout cavity 110 through its holding part 220; Thereby can be in valve body 1 with jet-conditioning unit 2 fixed in position; And make the linkage section 221 on it match, at this moment gas port 211 on the linkage section 221 and spray chamber 310 conductings on the liquid jetting device 3 with the spray chamber 310 of liquid jetting device 3.
Tapered adjustable lever 222 on linkage section 221 tops will cooperate along the nozzle 320 of spray chamber 310 inwall directions with its bottom.
Adjusting knob 4 and silencer 5 corresponding setting are on liquid jetting device 3.
At this moment, suction port on the jet-conditioning unit 2 210 inserts power gas sources, and power gas source gets into spray chambers 310 through gas port 211, side gas port 212, from annular spray mouth 10 ejection at a high speed of 320 at tapered adjustable lever 222 and nozzle, formation jet.
Sucked by air absorbing body intakeport on second air aspiration cavity 120 122 from the valve body 1; Get into first air aspiration cavity 332 through air intake passage 331; Jet by annular spray mouth 10 is taken out of; Through mixing chamber 333, diffusion chamber 334, exhaust cavity 335, behind silencer 5, emit with power gas through relief opening 344 again.
Pressure-detecting device pressure taps 121 pressures from the valve body 1.According to needed vacuum magnitude; Rotating adjusting knob 4 makes described liquid jetting device 3 move axially along valve body 1; Thereby make the move left and right of tapered adjustable lever 222 with respect to nozzle 320; And then realize that the tapered adjustable lever 222 of control and the annular space of 320 formation of nozzle are the size of the area of annular spray mouth 10, thereby the consumption gas of control power gas reaches the purpose of adjusting negative pressure.
Owing to be the jetburner area of direct control jet, the energy loss during adjusting is very little, and the speed that the jetburner gas blowing goes out changes less basically, and the momentum of jetburner and power gas flow are linear, and the working efficiency of liquid jetting device is all higher in regulation range.
Embodiment two
Referring to Fig. 8, with embodiment one difference be: liquid jetting device 3 is to fixedly install among this embodiment two, and the tapered adjustable lever 222 of jet-conditioning unit 2 is movable setting, and move left and right makes tapered adjustable lever 222 with respect to the move left and right of nozzle 320,
For this reason in this example, jet-conditioning unit 2 is the needle-valve shape, and it comprises a cylinder, and this cylinder matches with valve body snout cavity 110, and fixed in position is on valve body.
The side of cylinder is provided with suction port 210, and is provided with a gas port 211 in its bottom, and this gas port 211 directly and spray chamber 310 conductings of liquid jetting device 3.
Jet-conditioning unit 2 also comprises tapered adjustable lever 222, needle-valve 221 and adjusting knob 220.Wherein needle-valve 221 provides in cylinder, and can moving axially along cylinder.Identical with embodiment one, the front end of needle-valve 221 is provided with tapered adjustable lever 222, and this tapered adjustable lever 222 places the spray chamber 310 of liquid jetting device 3, and matches with the nozzle 320 of spray chamber 310, thus and 320 formation of nozzle annular spray mouth 10.
Needle-valve 221 is positioned at the outer the other end of cylinder adjusting knob 220 is set; Through rotating adjusting knob 220 needle-valve 221 in the jet-conditioning unit 2 is moved axially along valve body 2; Thereby the tapered adjustable lever 222 that drives the top moves axially along valve body 2; Regulate the distance that tapered adjustable lever 222 passes nozzle 320 with this; Through the grading structure of tapered adjustable lever 222, realize the size of annular spray mouth 10 areas of 320 at tapered adjustable lever 222 of control and nozzle, promptly control the aperture of annular jetburner 10.
All the other structures among this embodiment are identical with structure in the instance one, do not give unnecessary details here.
The embodiment of this instance is following:
Sucked by air absorbing body intakeport on second air aspiration cavity 120 122 from the valve body 1; Get into first suction chamber 332 on the liquid jetting device 3; And take out of by the jet of annular spray mouth 10; Through mixing chamber 333, diffusion chamber 334, exhaust cavity 335, behind silencer 5, emit with power gas through relief opening 344 again.
Pressure-detecting device pressure taps 121 pressures from the valve body 1.According to needed vacuum magnitude; Rotate adjusting knob 220 needle-valve 221 in the jet-conditioning unit 2 is moved axially along valve body 2, thereby the tapered adjustable lever 222 that drives the top moves axially along valve body 2, regulates the distance that tapered adjustable lever 222 passes nozzle 320 with this; Grading structure through tapered adjustable lever 222; Realize the size of annular spray mouth 10 areas of 320 at tapered adjustable lever 222 of control and nozzle, thereby the consumption gas of control power gas reaches the purpose of regulating negative pressure.
Owing to be the projected area of direct control jet, the speed that ejects changes less basically, and the momentum and the flow of jetburner are linear.
Can know that by last instance the utility model forms new-type can regulate annular spray mouth, come the controlling and driving gas flow through area with taper adjustable lever control nozzle annular jetburner.
Can know that by Fig. 9 the utility model energy loss when regulating is little, the speed substantially constant of jetburner ejection, the momentum at nozzle place (Vm) is linear with the dynamic air-flow amount, and when liquid jetting device was regulated on a large scale, the efficient of liquid jetting device was obviously high than traditional structure.
More than show and described the advantage of basic principle, major character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (8)
1. gas jet type negative pressure generator; Comprise liquid jetting device; Said liquid jetting device is the perforation cylinder in five chambeies, comprises spray chamber, first air aspiration cavity, mixing chamber, diffusion chamber, exhaust cavity successively, and said spray chamber contains a nozzle; It is characterized in that; Said generator also comprises a tapered adjustable lever, and said tapered adjustable lever cooperates with nozzle on the spray chamber and forms the annular spray mouth, and regulates the openings of sizes of annular jetburner through relatively moving between the nozzle on tapered adjustable lever and the spray chamber.
2. gas jet type draft regulator, said regulator comprises liquid jetting device, said liquid jetting device is the perforation cylinder in five chambeies, comprises spray chamber, first air aspiration cavity, mixing chamber, diffusion chamber, exhaust cavity successively, it is characterized in that said regulator also comprises:
Valve body, said valve body are the perforation cylinder in three chambeies, set gradually snout cavity, second air aspiration cavity and outlet plenum, and the outlet plenum of said valve body cooperates with said liquid jetting device and joins, and make the first air aspiration cavity conducting on second air aspiration cavity and the liquid jetting device;
Jet-conditioning unit; Said jet-conditioning unit comprises tapered adjustable lever and the cylinder that is used to settle tapered adjustable lever; Said cylinder is provided with suction port; Be provided with the gas port with said suction port conducting in the body, said cylinder matches with the snout cavity of said valve body, said gas port and said spray chamber conducting; Said tapered adjustable lever cooperates formation annular spray mouth with the nozzle of said spray chamber, and regulates the openings of sizes of annular jetburner through relatively moving between the nozzle on tapered adjustable lever and the spray chamber.
3. a kind of gas jet type draft regulator according to claim 2 is characterized in that the outlet plenum of said liquid jetting device and said valve body is spirally connected, and makes liquid jetting device to move axially along valve body, and the snout cavity of said jet-conditioning unit and said valve body is affixed; Tapered adjustable lever in the said jet-conditioning unit is installed in the top of cylinder, and said suction port is arranged on the bottom of cylinder, and the bottom of said gas port is provided with a side gas port that is used for said spray chamber conducting at least.
4. a kind of gas jet type draft regulator according to claim 2 it is characterized in that the outlet plenum of said liquid jetting device and said valve body is affixed, and the snout cavity of jet-conditioning unit and said valve body is affixed; Tapered adjustable lever in the said jet-conditioning unit provides on cylinder, and can move axially along cylinder, and said suction port is arranged on the sidewall of cylinder, the direct and said spray chamber conducting of said gas port.
5. a kind of gas jet type draft regulator according to claim 4 is characterized in that, also is provided with first adjusting knob on the said tapered adjustable lever.
6. a kind of gas jet type draft regulator according to claim 2 is characterized in that said regulator also comprises second adjusting knob, and the afterbody of said second adjusting knob and said liquid jetting device joins.
7. a kind of gas jet type draft regulator according to claim 6 is characterized in that, said second adjusting knob covers on the relief opening of exhaust cavity of liquid jetting device.
8. a kind of gas jet type draft regulator according to claim 2 is characterized in that said regulator also comprises silencer, and said silencer is placed in the exhaust ports of the exhaust cavity of said liquid jetting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203090891U CN202348796U (en) | 2011-08-23 | 2011-08-23 | Gas jet-type negative pressure generator and gas jet-type negative pressure adjustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203090891U CN202348796U (en) | 2011-08-23 | 2011-08-23 | Gas jet-type negative pressure generator and gas jet-type negative pressure adjustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348796U true CN202348796U (en) | 2012-07-25 |
Family
ID=46537803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203090891U Expired - Lifetime CN202348796U (en) | 2011-08-23 | 2011-08-23 | Gas jet-type negative pressure generator and gas jet-type negative pressure adjustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348796U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312869A (en) * | 2011-08-23 | 2012-01-11 | 捷锐企业(上海)有限公司 | A kind of gas jet type negative pressure generator and gas jet type draft regulator |
| CN103557358A (en) * | 2013-10-29 | 2014-02-05 | 陈壹敏 | Air vent valve device |
| CN104958817A (en) * | 2015-07-15 | 2015-10-07 | 深圳市安保科技有限公司 | Air and oxygen mixing device and method for respirator |
| WO2018086092A1 (en) * | 2016-11-14 | 2018-05-17 | 钟玲珑 | Vacuum energy-saving exhaust system |
| CN111395486A (en) * | 2020-03-25 | 2020-07-10 | 厚力德机器（杭州）有限公司 | Intelligent control interface valve system for sewage collection |
| CN111395485A (en) * | 2020-03-25 | 2020-07-10 | 厚力德机器（杭州）有限公司 | Intelligent control interface valve for sewage collection and variable control method |
| CN113457865A (en) * | 2021-07-30 | 2021-10-01 | 翟国峰 | Autonomous pressurizing flow type liquid raw material injection device |
| CN115571641A (en) * | 2022-10-11 | 2023-01-06 | 中航超能(苏州)科技有限公司 | Calcium hydroxide conveying system and method |
| CN115813255A (en) * | 2022-08-17 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Vacuum generator and negative pressure dust collection device with same |
-
2011
- 2011-08-23 CN CN2011203090891U patent/CN202348796U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312869A (en) * | 2011-08-23 | 2012-01-11 | 捷锐企业(上海)有限公司 | A kind of gas jet type negative pressure generator and gas jet type draft regulator |
| CN103557358A (en) * | 2013-10-29 | 2014-02-05 | 陈壹敏 | Air vent valve device |
| CN103557358B (en) * | 2013-10-29 | 2017-03-29 | 德施普科技发展温州有限公司 | A kind of discharge valve apparatus |
| CN104958817A (en) * | 2015-07-15 | 2015-10-07 | 深圳市安保科技有限公司 | Air and oxygen mixing device and method for respirator |
| WO2018086092A1 (en) * | 2016-11-14 | 2018-05-17 | 钟玲珑 | Vacuum energy-saving exhaust system |
| CN111395486A (en) * | 2020-03-25 | 2020-07-10 | 厚力德机器（杭州）有限公司 | Intelligent control interface valve system for sewage collection |
| CN111395485A (en) * | 2020-03-25 | 2020-07-10 | 厚力德机器（杭州）有限公司 | Intelligent control interface valve for sewage collection and variable control method |
| CN111395486B (en) * | 2020-03-25 | 2021-05-04 | 艾迪机器(杭州)有限公司 | Intelligent control interface valve system for sewage collection |
| CN113457865A (en) * | 2021-07-30 | 2021-10-01 | 翟国峰 | Autonomous pressurizing flow type liquid raw material injection device |
| CN115813255A (en) * | 2022-08-17 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Vacuum generator and negative pressure dust collection device with same |
| CN115813255B (en) * | 2022-08-17 | 2023-12-12 | 宁德时代新能源科技股份有限公司 | Vacuum generator and negative pressure dust collection device with same |
| CN115571641A (en) * | 2022-10-11 | 2023-01-06 | 中航超能(苏州)科技有限公司 | Calcium hydroxide conveying system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202348796U (en) | Gas jet-type negative pressure generator and gas jet-type negative pressure adjustor | |
| CN102312869A (en) | A kind of gas jet type negative pressure generator and gas jet type draft regulator | |
| CN102588353B (en) | Self excited oscillation type jet vacuum pump | |
| EP1714345B8 (en) | Fuel cell system with variable coanda amplifiers for gas recirculation and system pressure regulation | |
| CN200943608Y (en) | Adjustable injection type compressor | |
| CN106438108B (en) | It is big to adjust than type solid rocket ramjet gas flow regulating device | |
| CN108672123A (en) | A kind of adjustable injector of mixing chamber throat opening area | |
| CN204656772U (en) | A kind of two phase flow atomization aeration nozzle | |
| CN204512014U (en) | A kind of nozzle-adjustable steam ejector | |
| CN202091604U (en) | Fuel gas/air proportion control valve | |
| CN2751271Y (en) | Wind knife with adjustable wind speed | |
| CN205579851U (en) | Air -out device of adjustable induction type new trend system | |
| CN203671600U (en) | Oil-pressure and low-pressure air atomizing type combustor | |
| CN201416890Y (en) | Blast injection type gas burner | |
| CN206386315U (en) | A kind of supersonic gas injector of the tangential tonifying Qi of mixing chamber | |
| JPS56141045A (en) | Carbureter | |
| CN203751826U (en) | Cutting cooler in numerically-controlled machine tool machining equipment | |
| CN109290963B (en) | Ultrahigh-pressure abrasive jet flow generating device based on injection mechanism | |
| CN107718165B (en) | Air knife device | |
| CN211692986U (en) | Injection pump easy to adjust | |
| CN205618447U (en) | Vacuum generator | |
| CN205310078U (en) | Adjustable air intake sand blasting machine nozzle | |
| CN217976776U (en) | Shockproof adjustable ejector with detachable supporting ring | |
| CN217635730U (en) | Novel bellows structure suitable for big bellows | |
| CN211488200U (en) | Low-pressure atomizing nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |