CN205859302U - There is the mixing valve structure of voltage stabilizing function - Google Patents

There is the mixing valve structure of voltage stabilizing function Download PDF

Info

Publication number
CN205859302U
CN205859302U CN201620712112.4U CN201620712112U CN205859302U CN 205859302 U CN205859302 U CN 205859302U CN 201620712112 U CN201620712112 U CN 201620712112U CN 205859302 U CN205859302 U CN 205859302U
Authority
CN
China
Prior art keywords
valve
diaphragm
valve opening
plug
valve rod
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.)
Active
Application number
CN201620712112.4U
Other languages
Chinese (zh)
Inventor
邱家滨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAOYIN Co Ltd
Original Assignee
BAOYIN Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BAOYIN Co Ltd filed Critical BAOYIN Co Ltd
Priority to CN201620712112.4U priority Critical patent/CN205859302U/en
Application granted granted Critical
Publication of CN205859302U publication Critical patent/CN205859302U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Multiple-Way Valves (AREA)

Abstract

A kind of mixing valve structure with voltage stabilizing function, including body, the first valve rod, the first valve plug, driving means, diaphragm, the second valve rod and the second valve plug.The inside of body is provided with combustion gas chamber, fuel gas inlet, gas outlet, the first valve opening, the second valve opening and diaphragm accommodation chamber.First valve plug is arranged on the first valve rod, and the first valve plug can be in order to open and close the first valve opening, and the first valve rod is connected to driving means, and driving means can drive the first valve rod to drive the first valve plug to move, in order to adjust the aperture of the first valve opening.Diaphragm is arranged at the inside of diaphragm accommodation chamber, and the second valve plug is arranged on the second valve rod, and the second valve plug can be in order to open and close the second valve opening.Second valve rod is connected to diaphragm, diaphragm can the action along with the air pressure change in this diaphragm accommodation chamber, to drive the second valve plug to move by the second valve rod, in order to adjust the aperture of the second valve opening.Whereby, with mixing valve and the function of pressure maintaining valve, the space of installation can be saved, and make cost-effective reduction.

Description

There is the mixing valve structure of voltage stabilizing function
Technical field
This utility model relates to a kind of mixing valve structure, particularly relates to a kind of have the mixed of voltage stabilizing function for premixing Close valve arrangement.
Background technology
The devices such as water heater can be provided with mixing valve structure, and this mixing valve structure may be used to suitable the giving vent to anger of control gas Amount, in order to carry out premixing with air, then by the mixed gas delivery of gas and air to burner.Existing mixing valve structure Not there is the function of voltage stabilizing, therefore a pressure maintaining valve structure must be additionally set, the function of voltage stabilizing can be provided.But independently set Put a pressure maintaining valve structure, in addition to the space taking installation, more can cause the increase of cost.
Summary of the invention
Technical problem to be solved in the utility model, is to provide a kind of mixing valve structure with voltage stabilizing function, holds concurrently There is the function of mixing valve and pressure maintaining valve, the space of installation can be saved, and make cost-effective reduction.
In order to solve above-mentioned technical problem, this utility model provides a kind of mixing valve structure with voltage stabilizing function, bag Including: a body, the inside of this body is provided with a combustion gas chamber, a fuel gas inlet and a gas outlet, this fuel gas inlet and this combustion Gas outlet, in this combustion gas chamber, is provided with one first valve opening, one second valve opening and a diaphragm accommodation chamber in this combustion gas chamber; One first valve rod, this first valve rod is arranged at the inside of this body;One first valve plug, this first valve plug is arranged at this first valve rod On, this first valve plug can be in order to open and close this first valve opening;One driving means, this first valve rod is connected to this driving means, and this drives Dynamic device can drive this first valve rod to drive this first valve plug to move, in order to adjust the aperture of this first valve opening;One diaphragm, should Diaphragm is arranged at the inside of this diaphragm accommodation chamber;One second valve rod, this second valve rod is arranged at the inside of this body, and this is years old Two valve rods are connected to this diaphragm;And one second valve plug, this second valve plug is arranged on this second valve rod, this second valve plug energy In order to open and close this second valve opening, this diaphragm can the action along with the air pressure change in this diaphragm accommodation chamber, with by this Two valve rods drive this second valve plug to move, in order to adjust the aperture of this second valve opening.
Preferably, this mixing valve structure with voltage stabilizing function also includes one first elastic parts, this first elastic parts This diaphragm of contact, makes the direction of this diaphragm this second valve opening dorsad move.
Preferably, this body arranging a governor motion, this governor motion comprises an adjustment screw, a yoke frame and 1 Two elastic partss, this adjustment screw is bolted on a screw seat of this body, and this adjustment screw contacts in this yoke frame, and this is second years old Elastic parts is arranged between this yoke frame and this diaphragm, this adjustment screw rotate time, can by this yoke frame and this second Elastic parts promotes this diaphragm, makes this diaphragm move towards the direction of this second valve opening.
Preferably, the axle center of this adjustment screw, this yoke frame, this diaphragm, this second valve rod and this second valve plug is positioned at Same straight line.
Preferably, this diaphragm is a circular lamellar body, and the edge of this diaphragm is fixed on this body, this second valve rod away from The center of this diaphragm is fixed in one end of this second valve plug.
Preferably, this fuel gas inlet and this gas outlet are located at the both sides that this body is relative, this fuel gas inlet and this combustion gas Export in relative or setting of staggering.
Preferably, this mixing valve structure with voltage stabilizing function also includes one first elastic parts, this first elastic parts This diaphragm of contact, makes the direction of this diaphragm this second valve opening dorsad move, this body arranges a governor motion, this regulation Mechanism comprises an adjustment screw, a yoke frame and one second elastic parts, and this adjustment screw is bolted in a screw seat of this body On, this adjustment screw contacts in this yoke frame, and this second elastic parts is arranged between this yoke frame and this diaphragm, this adjustment When screw rotates, this diaphragm can be promoted by this yoke frame and this second elastic parts, make this diaphragm towards this second valve The direction in hole is moved, and the axle center of this first valve opening and this second valve opening is positioned at same straight line.
The beneficial effects of the utility model:
When the combustion gas chamber interior of body of the present utility model forms negative pressure, this diaphragm can according to the change of negative pressure even Dynamic second valve rod drives the second valve plug to move, and adjusts the aperture of the second valve opening automatically.When the aperture of the second valve opening is excessive, combustion Gas puts on the pressure of diaphragm also can become big, now can push back diaphragm so that the aperture of the second valve opening reduces, to provide steady The function of pressure so that mixing valve structure of the present utility model is with mixing valve and the function of pressure maintaining valve.
Furthermore, body of the present utility model can also arrange a governor motion, in order to adjust the strength of diaphragm so that it is Function with regulation valve.
It is further understood that feature of the present utility model and technology contents for enabling, refers to below in connection with this utility model Detailed description and accompanying drawing, but accompanying drawing only provide with reference to and explanation use, not be used for this utility model is any limitation as.
Accompanying drawing explanation
Fig. 1 is the sectional view that this utility model has the mixing valve structure of voltage stabilizing function.
Fig. 2 is the part A detail drawing of Fig. 1.
Fig. 3 is the schematic diagram that this utility model has the mixing valve structure use state of voltage stabilizing function.
Detailed description of the invention
Referring to Fig. 1, this utility model provides a kind of mixing valve structure with voltage stabilizing function, particularly relate to a kind of for The mixing valve structure of premixing, including body 1,1 first valve rod 2,1 first valve plug 3, driving means 4, diaphragm 5, One second valve rod 6 and one second valve plug 7.
The inside of this body 1 is provided with combustion gas chamber 11, fuel gas inlet 12 and a gas outlet 13, fuel gas inlet 12 and Gas outlet 13 communicates with the outside of body 1, and fuel gas inlet 12 and gas outlet 13 are communicated in combustion gas chamber 11, fuel gas inlet 12 And gas outlet 13 can be located at the both sides that body 1 is relative, fuel gas inlet 12 and gas outlet 13 can in relatively or setting of staggering, The position of fuel gas inlet 12 and gas outlet 13 is not limiting as, and can be changed as desired.This fuel gas inlet 12 can be with pipe Road is connected to combustion gas (such as gas) source, in order to delivery of fuel gas to this combustion gas chamber 11.This gas outlet 13 then may connect to wind Machine (aerator) 10, in order to export the combustion gas of suitable gas output, in order to mix with the air in downstream, then mixed by gas and air Close gas and be delivered to the devices such as burner.
One first valve opening 111,1 second valve opening 112 and a diaphragm accommodation chamber 113 it is provided with in this combustion gas chamber 11, second Valve opening 112 can be located at the downstream of the first valve opening 111, and diaphragm accommodation chamber 113 can be located at the downstream of the second valve opening 112 so that by The combustion gas of fuel gas inlet 12 input can be sequentially delivered to by first valve opening the 111, second valve opening 112 and diaphragm accommodation chamber 113 Gas outlet 13, but the position that first valve opening the 111, second valve opening 112 and diaphragm accommodation chamber 113 are arranged is not limiting as, it is possible to Make an exchange.First valve opening 111 and the second valve opening 112 can be circular hole or conical bore etc., and its shape is not limiting as, the first valve opening 111 and second the shape of valve opening 112 can be changed according to the first valve plug 3 and the shape of the second valve plug 7.First valve opening 111 And second the axle center of valve opening 112 can be located at same straight line, but do not limited.
This first valve rod 2 can be an elongated body of rod, and the first valve rod 2 is arranged at the inside of body 1, and the first valve plug 3 is arranged at On first valve rod 2, that is the first valve plug 3 can be fixed on the first valve rod 2.This first valve plug 3 can be in order to open and close the first valve opening 111, the shape of this first valve plug 3 is not limiting as, such as, can be cylinder or cone etc..This first valve rod 2 and first valve That fills in 3 activities is arranged at body 1 inside, and the first valve rod 2 is connected to driving means 4.This driving means 4 can be the dresses such as electromagnetic valve Putting, its structure is not limiting as.This driving means 4 can be suitable be fixed on body 1 or other suitable position, driving means 4 The first valve rod 2 can be driven, in order to drive the first valve plug 3 to move by the first valve rod 2, in order to adjust the aperture of the first valve opening 111.
This diaphragm 5 is arranged at the inside of diaphragm accommodation chamber 113, that is this diaphragm 5 can be a circular lamellar body, and this is thin The edge of diaphragm 5 is securable to body 1 so that diaphragm 5 can produce action (moving up and down) along with air pressure change.Should Side (lower side) space of diaphragm 5 is connected with gas outlet 13, the space, side of this diaphragm 5 also with the first valve opening 111, the second valve opening 112 and fuel gas inlet 12 are connected so that when the blower fan 10 that this gas outlet 13 connects is driven, this thin film The space, side of sheet 5 can form negative pressure, so that the combustion gas within combustion gas chamber 11 is pumped output.When the side of this diaphragm 5 is empty Between when forming negative pressure, this diaphragm 5 is pulled toward the direction of the second valve opening 112 immediately.
This second valve rod 6 can be an elongated body of rod, and the second valve rod 6 is arranged at the inside of body 1, and the second valve plug 7 is arranged at On second valve rod 6, that is the second valve plug 7 can be fixed on the second valve rod 6.This second valve plug 7 can be in order to open and close the second valve opening 112, the shape of this second valve plug 7 is not limiting as, such as, can be cylinder or cone etc., and in the present embodiment, this is second years old Valve plug 7 is arranged at the lower position of the second valve opening 112, and the side of this second valve plug 7 is formed with an arcwall face 71, this arcwall face 71 Towards the second valve opening 112, this second valve plug 7 can adjust arcwall face 71 and the spacing of the second valve opening 112 lower edge when moving, so as to adjusting The aperture of whole second valve opening 112.
This second valve rod 6 and the second valve plug 7 activity to be arranged at body 1 internal, and the second valve rod 6 is connected to diaphragm 5, That is second valve rod 6 be securable to the center of diaphragm 5 away from one end of the second valve plug 7.This diaphragm 5 can be because of diaphragm Air pressure change in accommodation chamber 113 and action, in order to drive the second valve plug 7 to move by the second valve rod 6, in order to automatically to adjust the The aperture of two valve openings 112.
One first elastic parts 8 can be provided with, this first elastic parts 8 this thin film of contact between this diaphragm 5 and body 1 Sheet 5 so that the direction (upwards) of this diaphragm 5 second valve opening 112 dorsad is mobile, in order to drive second by this second valve rod 6 Valve plug 7 moves, and makes the second valve plug 7 can close the second valve opening 112.The most under normal conditions, this second valve opening 112 is closed, should Gas outlet 13 cannot export combustion gas, to increase the safety used.
Refer to Fig. 3, a negative pressure can be produced when external blower fan 10 operates, the combustion gas of combustion gas chamber 11 is taken out outward Send so that be delivered to the combustion gas in combustion gas chamber 11 by fuel gas inlet 12, can sequentially pass through the first valve opening 111 and the second valve opening 112 are delivered to gas outlet 13, then are exported required combustion gas by gas outlet 13.It is internally formed negative pressure when this combustion gas chamber 11 Time, the direction that this diaphragm 5 can be pulled towards the second valve opening 112 is moved, and can interlock the second valve rod 6 by this diaphragm 5 and carry Dynamic second valve plug 7 moves so that the aperture of the second valve opening 112 increases.When the rotating speed of this blower fan 10 is faster, and the negative pressure of generation is more Greatly, the aperture of the second valve opening 112 is the biggest, with the gas outlet amount that offer is bigger.Otherwise, when the rotating speed of this blower fan 10 is healed Slowly, the negative pressure of generation is the least, and the aperture of the second valve opening 112 is the least, with the gas outlet amount that offer is less.Whereby, According to the rotating speed of this blower fan 10, adjust the aperture of the second valve opening 112 automatically, make the second valve opening 112 reach a certain preset value, make The air-fuel ratio obtaining air and combustion gas is maintained on chemically correct fuel.
Furthermore, when the rotating speed of blower fan 10 is faster, and the negative pressure of generation is bigger, and the aperture of the second valve opening 112 is the biggest, to carry For bigger gas outlet amount.Only, when the aperture of the second valve opening 112 is excessive, the gas output of combustion gas is relatively big, and relative combustion gas applies Pressure in diaphragm 5 also can become big, the direction (upwards) of diaphragm 5 second valve opening 112 dorsad now can be promoted to move and (return Push away), the second valve rod 6 can be interlocked by this diaphragm 5 and drive the second valve plug 7 to move up so that the aperture of the second valve opening 112 subtracts Few, to provide the function of voltage stabilizing so that mixing valve structure of the present utility model is with mixing valve and the function of pressure maintaining valve.
Referring to Fig. 1 and Fig. 2, this utility model also further can arrange a governor motion 9, this regulation on body 1 Mechanism 9 comprises adjustment screw 91, yoke frame 92 and one second elastic parts 93.This adjustment screw 91 is bolted in body 1 On one screw seat 14, the screw seat 14 of body 1 is exposed in one end of this adjustment screw 91, in order to rotate this adjustment screw 91, should Adjust when screw 91 rotates and can produce axial displacement.This yoke frame 92 is arranged at the other end adjusting screw 91, makes this The other end adjusting screw 91 can contact in yoke frame 92.This second elastic parts 93 is arranged at yoke frame 92 and diaphragm 5 Between, that is the two ends of the second elastic parts 93 contact respectively in the bottom surface of yoke frame 92 and the end face of diaphragm 5.At this example In, the axle center adjusting screw 91, yoke frame 92, diaphragm the 5, second valve rod 6 and the second valve plug 7 is positioned at same straight line, to have Preferably linkage effect.
When the adjustment screw 91 of this governor motion 9 rotates, can be promoted by yoke frame 92 and the second elastic parts 93 Diaphragm 5, this diaphragm 5 is mobile towards the direction (downwards) of the second valve opening 112, can offset the elastic force of the first elastic parts 8, Therefore may utilize the second elastic parts 93 and control the strength of the second elastic parts 93.Whereby so that this diaphragm 5 forms scalable Design, in order to adjust the strength of this diaphragm 5 as desired.When this adjustment screw 91 towards diaphragm 5 direction (to Under) adjust time, this governor motion 9 can bestow the pressure that this diaphragm 5 is bigger so that this diaphragm 5 than less easily toward the back of the body Move to the direction of diaphragm 5.Otherwise, when the direction (upwards) of this adjustment screw 91 diaphragm 5 dorsad adjusts, this regulation machine Structure 9 can bestow the pressure that this diaphragm 5 is less, the strength of this diaphragm 5 of adjustment that therefore can be suitable so that it is with tune The function of joint valve.
When the combustion gas chamber interior of body of the present utility model forms negative pressure, this diaphragm can according to the change of negative pressure even Dynamic second valve rod drives the second valve plug to move, and adjusts the aperture of the second valve opening automatically, makes the second valve opening reach a certain preset value, The air-fuel ratio making air and combustion gas is maintained on chemically correct fuel.When the aperture of the second valve opening is excessive, combustion gas puts on thin The pressure of diaphragm also can become big, now can push back diaphragm so that the aperture of the second valve opening reduces, to provide the function of voltage stabilizing, Make mixing valve structure of the present utility model with mixing valve and the function of pressure maintaining valve.Furthermore, on body of the present utility model One governor motion can also be set further, in order to adjust the strength of diaphragm so that it is with the function of regulation valve.
But the foregoing is only preferred embodiment of the present utility model, it is not intended to limit to patent protection of the present utility model Scope, therefore the equivalence change such as using this utility model description and accompanying drawing content to do, be the most all contained in this practicality In the range of novel rights protection.

Claims (7)

1. a mixing valve structure with voltage stabilizing function, it is characterised in that including:
One body, the inside of this body is provided with a combustion gas chamber, a fuel gas inlet and a gas outlet, this fuel gas inlet and this combustion Gas outlet, in this combustion gas chamber, is provided with one first valve opening, one second valve opening and a diaphragm accommodation chamber in this combustion gas chamber;
One first valve rod, this first valve rod is arranged at the inside of this body;
One first valve plug, this first valve plug is arranged on this first valve rod, and this first valve plug can be in order to open and close this first valve opening;
One driving means, this first valve rod is connected to this driving means, and this driving means can drive this first valve rod to drive should First valve plug moves, in order to adjust the aperture of this first valve opening;
One diaphragm, this diaphragm is arranged at the inside of this diaphragm accommodation chamber;
One second valve rod, this second valve rod is arranged at the inside of this body, and this second valve rod is connected to this diaphragm;And
One second valve plug, this second valve plug is arranged on this second valve rod, this second valve plug can in order to open and close this second valve opening, This diaphragm can the action along with the air pressure change in this diaphragm accommodation chamber, to drive this second valve by this second valve rod Plug is mobile, in order to adjust the aperture of this second valve opening.
There is the mixing valve structure of voltage stabilizing function the most as claimed in claim 1, it is characterised in that this has the mixed of voltage stabilizing function Close valve arrangement also include one first elastic parts, this first elastic parts this diaphragm of contact, make this diaphragm dorsad this second The direction of valve opening is moved.
There is the mixing valve structure of voltage stabilizing function the most as claimed in claim 2, it is characterised in that a regulation is set on this body Mechanism, this governor motion comprises an adjustment screw, a yoke frame and one second elastic parts, and this adjustment screw is bolted in this body A screw seat on, this adjustment screw contacts in this yoke frame, and this second elastic parts is arranged at this yoke frame and this diaphragm Between, when this adjustment screw rotates, it is possible to promote this diaphragm by this yoke frame and this second elastic parts, make this diaphragm Move towards the direction of this second valve opening.
There is the mixing valve structure of voltage stabilizing function the most as claimed in claim 3, it is characterised in that this adjustment screw, this pushing tow The axle center of part, this diaphragm, this second valve rod and this second valve plug is positioned at same straight line.
There is the mixing valve structure of voltage stabilizing function the most as claimed in claim 1, it is characterised in that this diaphragm is a circular piece Body, the edge of this diaphragm is fixed on this body, and this second valve rod is fixed on this diaphragm away from one end of this second valve plug Center.
There is the mixing valve structure of voltage stabilizing function the most as claimed in claim 1, it is characterised in that this fuel gas inlet and this combustion gas The both sides that this body is relative are located in outlet, and this fuel gas inlet and this gas outlet are in relative or setting of staggering.
There is the mixing valve structure of voltage stabilizing function the most as claimed in claim 1, it is characterised in that this has the mixed of voltage stabilizing function Close valve arrangement also include one first elastic parts, this first elastic parts this diaphragm of contact, make this diaphragm dorsad this second The direction of valve opening is moved, and this body arranges a governor motion, and this governor motion comprises an adjustment screw, a yoke frame and 1 Two elastic partss, this adjustment screw is bolted on a screw seat of this body, and this adjustment screw contacts in this yoke frame, and this is second years old Elastic parts is arranged between this yoke frame and this diaphragm, when this adjustment screw rotates, it is possible to by this yoke frame and this Two elastic partss promote this diaphragm, make this diaphragm move towards the direction of this second valve opening, this first valve opening and this second The axle center of valve opening is positioned at same straight line.
CN201620712112.4U 2016-07-07 2016-07-07 There is the mixing valve structure of voltage stabilizing function Active CN205859302U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620712112.4U CN205859302U (en) 2016-07-07 2016-07-07 There is the mixing valve structure of voltage stabilizing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620712112.4U CN205859302U (en) 2016-07-07 2016-07-07 There is the mixing valve structure of voltage stabilizing function

Publications (1)

Publication Number Publication Date
CN205859302U true CN205859302U (en) 2017-01-04

Family

ID=57645752

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620712112.4U Active CN205859302U (en) 2016-07-07 2016-07-07 There is the mixing valve structure of voltage stabilizing function

Country Status (1)

Country Link
CN (1) CN205859302U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108006275A (en) * 2017-12-07 2018-05-08 湖北中瑞天恒节能科技发展有限公司 Anti-backfire kitchen range
CN110608305A (en) * 2018-06-15 2019-12-24 芜湖美的厨卫电器制造有限公司 Gas valve device and gas water heater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108006275A (en) * 2017-12-07 2018-05-08 湖北中瑞天恒节能科技发展有限公司 Anti-backfire kitchen range
CN110608305A (en) * 2018-06-15 2019-12-24 芜湖美的厨卫电器制造有限公司 Gas valve device and gas water heater
CN110608305B (en) * 2018-06-15 2024-02-20 芜湖美的厨卫电器制造有限公司 Gas valve device and gas water heater

Similar Documents

Publication Publication Date Title
CN205859302U (en) There is the mixing valve structure of voltage stabilizing function
CN202303391U (en) Fuel gas regulator
CN211494470U (en) Foldable device of seed launching tube of dibble seeding unmanned aerial vehicle
CN202091604U (en) Fuel gas/air proportion control valve
CN202117797U (en) Gas mixer with gas compensation branch
CN205746831U (en) Linkage type mixing valve structure
CN102759105A (en) Adjustable gas nozzle
CN208052439U (en) A kind of injection molding agitating shaft
CN205745465U (en) Mixing valve structure
CN104074631B (en) A kind of Carburetor and oily architecture thereof
KR102312889B1 (en) Gas Burner
CN205842662U (en) A kind of gas furnace and air fuel mixing arrangement thereof
US20220228743A1 (en) Gas mixing device and gas water heating device
CN211568310U (en) Gas mixer of dibbling and seeding unmanned aerial vehicle
CN205841822U (en) Stepless regulating gas valve
CN204338093U (en) powder mixer
CN212430857U (en) Three-section type adjusting device of infrared burner
CN208057969U (en) A kind of electric flow valve setting flow
CN111003179A (en) Seeding unmanned aerial vehicle
CN203189814U (en) Negative inspiratory pressure valve with coarse-fine regulating device
CN202506325U (en) Adjustable hydraulic jet dry powder conveyor
CN207298004U (en) A kind of Depressure valve
CN216964185U (en) Mixing device of hydrogen and natural gas
CN110979685A (en) A dibble seeding system for unmanned aerial vehicle seeding
CN104728479B (en) Diaphragm capsule type two-stage pressure regulating and stabilizing mixer

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant