CN201100190Y

CN201100190Y - Electric valve for adjusting and controlling fluid flux

Info

Publication number: CN201100190Y
Application number: CNU2007201250940U
Authority: CN
Inventors: 邓刚
Original assignee: CHONGQING JUSHENG ELECTRIC APPLIANCE Co Ltd
Current assignee: CHONGQING JUSHENG ELECTRIC APPLIANCE Co Ltd
Priority date: 2007-08-30
Filing date: 2007-08-30
Publication date: 2008-08-13
Anticipated expiration: 2017-08-30

Abstract

The utility model discloses a motorized valve which is used to regulate and control fluid quantity, which comprises a valve body, a valve core and a stepping motor, wherein the valve body and the stepping motor are connected in circumferential location, a connecting nozzle on the axial end of the valve body has the same axial center line with a valve cavity, the external extending end of the rotation shaft of the stepping motor is connected with the threads of the valve core through a bolt, the valve body is arranged in the valve cavity along the axial shifting in the circumferential location, the front end of the valve core is provided with a cone body which can be inserted in the connecting nozzle on the axial end of the valve body and can linearly change the gas section area in the hole gradually, the valve body and the stepping motor are locked through two casings in opposite direction, and the end of the valve which is provided with the connecting hole is extended out of the casing. The motorized valve can realize the accurate micro-regulation for the fluid quantity through a simple structure, increases control accuracy, and has low manufacturing cost and easy assembly.

Description

Regulate the mortor operated valve of control fluid flow

Technical field

The utility model relates to a kind of device of regulating the control fluid flow, particularly a kind of mortor operated valve of regulating the control fluid flow.

Background technique

What the control of fluid flow was more at present is to adopt manually operated valve or solenoid valve, and the structure of this two classes control valve is simple relatively, and fabricating cost is relatively low.But, because the control of manually operated valve fluid flow is the visual sense that relies on the people fully, so it is poor to exist trace to regulate, the problem that control accuracy is low; And solenoid valve generally only opens the passage that fluid passes through and cuts out two kinds of working staties of passage that fluid passes through, fluid by the time convection cell the adjusting of flow be to regulate by the open frequency speed of solenoid valve, it is poor that same existence trace is regulated, the problem that control accuracy is low; Especially the solenoid valve adhesive bump of opening, closing formation repeatedly produce impact noise, and spool damages easily also.Also there is the stepper motor driven valve of employing body to open at present, close, and fluid flow is carried out the device that trace is regulated, but the general structure of device of the regulating and controlling fluid flow of existing employing stepper motor driven valve body is more complicated all, as publication number is CN1515971A " control device of electric motor of flow control device ", publication number is CN1573190A's technology such as " electric flow control valves ", though can realize fluid flow carries out trace and regulates, improve control accuracy, but because its complex structure, assembling difficulty is bigger, fabricating cost is higher relatively, has increased factory and user's expense.And along with people solve the abundant burning of combination gas in the motor car engine to reduce the problem of toxic emission, between Carburetor and motor, secondary air-supplementing valve is set, replenish certain air once more by combination gas to Carburetor output, the combination gas that enters engine chamber can fully be burnt, reduce the waste gas of engine emission; But, because the secondary air-supplementing valve of existing motor car engine all is the solenoid valve that adopts, even solenoid valve adopts its unlatching of microprocessor control, close frequency, and the control program of microcontroller can precise design, when yet solenoid valve is done reciprocal mechanical motion in the control of microcontroller, when being under the reciprocating working state of high frequency, the reciprocating frequence of its mechanical motion does not often catch up with the control frequency of microcontroller, the action of confusion reigned, be difficult to the accurate regulating and controlling air compensation of working condition according to motor, the air that causes mending in the combination gas is too much or very few, influences the burning of combination gas in engine chamber, acting; Even the control that microcontroller occurs is out of control, and solenoid valve is fixed in a kind of operating state, or long-time the unlatching carry out tonifying Qi, or long-time closure can not tonifying Qi, the function of forfeiture secondary air compensating.So,, be difficult to still realize that excellent effect reduces the purpose of engine exhaust emission amount by the secondary air-supplementing valve of solenoid valve as motor.

Summary of the invention

The purpose of this utility model is the deficiency that exists at prior art, a kind of mortor operated valve of regulating the control fluid flow is provided, and it can realize that by simple structure the fluid flow that is passed through is carried out accurate trace to be regulated, and improves control accuracy, and fabricating cost is low, easily assembling.

The technical solution of the utility model is to realize like this, comprise valve body, spool, stepper motor, be respectively equipped with in the connection on the valve body, the connection nipple of downstream line, a connection nipple of described valve body be positioned at valve body an axial end and with the valve pocket coaxial inner conductor of valve body, another axial end and the stepper motor of valve body circumferentially are located by connecting, the fixedly connected screw rod of the overhanging end of the rotating shaft of stepper motor, described spool tail end axially is provided with tapped hole and cooperates with this screw flight, spool can be located in the valve pocket along valve body with circumferentially locating axially, the matching gap of spool and valve body seals with O type circle, the front end of spool has a linear cone that changes hole internal pore sectional area gradually that is that can insert in the connection nipple hole of valve body axial end, the diameter of the big end of this cone is identical with connection nipple hole inner diameter, valve body and stepper motor are fastened together in opposite directions by two housings, and the end that valve body has connection nipple stretches out housing outward.

Owing to adopted such scheme, spool can be located in the valve pocket along valve body with circumferentially locating axially, the front end of spool has a linear cone that changes hole internal pore sectional area gradually that is that can insert in the connection nipple hole of valve body axial end, the diameter of the big end of this cone is identical with connection nipple hole inner diameter, by spool in valve pocket along the axial straight line displacement movement that advances or retreat of valve body, make the cone of spool front end enter in the connection nipple hole or withdraw from the connection nipple hole, realize closing or opening of convection cell passage, and can be by the microdisplacement of spool, accurately regulate the throughput of control fluid, the realization fluid flow is carried out accurate trace and is regulated the raising control accuracy.Described spool can be located in the valve pocket along valve body with circumferentially locating axially, the spool tail end axially is provided with tapped hole and cooperates with a screw flight, form bolt and nut mechanism, screw rod is fixedlyed connected with the overhanging end of the rotating shaft of stepper motor, driving screw rod by stepper motor just does, counterrotating, the screw rod rotation makes spool axially carry out the straight-line displacement campaign along valve body, because the rotating shaft angle of swing of stepper motor can accurately be controlled by microcontroller, therefore the spool axial displacement is also just precisely controlled, the cone of spool front end just can accurately be the sectional area that linear micro changes connection nipple hole internal pore under the control like this, makes the fluid flow by connection nipple obtain accurate micro-the adjusting.Especially spool to be the linear cone that changes hole internal pore sectional area gradually be the needle-like cone, the cone angle of cone is 10～30 °, the less relatively cone of this cone angle has the relatively long conical surface that is linear deformation, the variation that the free cross-section that formed fluid passed through when it moved at connection nipple hole intrinsic displacement amasss is small, helps realizing the trace adjusting of fluid flow.Simultaneously because the valve core movement of mortor operated valve is to be driven by stepper motor, the stroke of its forward and back is controlled by stepper motor, can not produce bigger impact force, makes spool and the seal washer in the mouth aperture that is used to be tightly connected is not easy to damage, prolonged working life, also eliminated impact noise.Described valve body and stepper motor circumferentially are located by connecting, at least two locating studs of the end face by valve body that circumferentially is located by connecting of valve body and stepper motor insert the circumferential location of formation valve body and stepper motor in the positioning hole of the corresponding setting of end face of stepper motors, the valve body and the stepper motor that circumferentially are located by connecting together are fastened together in opposite directions by two housings, the end that valve body has connection nipple stretches out housing outward, and cooperates by the trapeze cut that is provided with respectively on six rib annular grooves of circumference and two housings that is provided with on the valve body valve body circumferential and axial are located.Such structure is extremely simple, can finish the assembling of this mortor operated valve fast, can either reduce workman's work difficulty, enhances productivity, and can reduce production costs again.

The mortor operated valve that the utility model is regulated the control fluid flow is installed between the Carburetor and motor of motorcycle, secondary air-supplementing valve as combination gas, under the control of microcontroller, regulate the air quantity of replenishing, can be according to the air burning of the combination gas of engine behavior than accurately replenishing air, guarantee that combination gas is fully burned, at waste pipe ternary catalyzing unit is installed simultaneously, can make the waste gas emission standard of the motorcycle engine that adopts Carburetor reach Europe 3 standards, can reduce motorcycle engine toxic emission technological transformation up to standard and cost of production.

The utility model is described in further detail below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the D-D of Fig. 1 is to sectional drawing;

Fig. 3 is that the E-E of Fig. 1 is to sectional drawing;

Fig. 4 is a fractionation schematic representation of the present utility model.

In the accompanying drawing, 1 is stepper motor, and 1a is rotating shaft, and 2 is screw rod, and 3 is O type circle, 4 is valve body, and 4a is a valve pocket, and 5 is seal washer, and 6 is spool, and 6a is a projection, 7 is connecting sleeve, and 8 is cone, and 9 is outlet nozzle, and 10 is air inlet nozzle, 11 is positioning plate, and 12 is printed circuit board, and 13 is rib, and 14 is rubber cushion, 15 is housing, and 15a is a lower shell body, and 15b is a upper shell, and 16 is locating stud, 17 is positioning hole, and 18 is chute, and 19 is six rib annular grooves, and 20 is trapeze cut.

Embodiment

Referring to Fig. 1 to Fig. 4, the mortor operated valve that present embodiment is regulated the control fluid flow is the secondary air-supplementing valve for the additional air of combination gas that is used for motorcycle engine, and it comprises valve body 4, spool 6, stepper motor 1, housing 15 etc.Be respectively equipped with in the connection on the described valve body 4, the connection nipple of downstream line, it is air inlet nozzle 10, outlet nozzle 9, the outlet nozzle 9 of valve body 4 be positioned at valve body an axial end and with the valve pocket 4a coaxial inner conductor of valve body, air inlet nozzle 10 is positioned at the valve body side, air inlet nozzle 10, outlet nozzle 9 is and the integrated structure of valve body, air inlet nozzle 10, the aperture of outlet nozzle 9 is less than the valve pocket 4a diameter of valve body 4, air inlet nozzle 10, the size of the aperture of outlet nozzle 9 and valve pocket 4a diameter, can design as required, common air inlet nozzle 10, the aperture of outlet nozzle 9 is generally φ 5～8mm, and the valve pocket 4a diameter of valve body 4 is generally φ 11～15mm; Another axial end and the stepper motor 1 of valve body 4 circumferentially are located by connecting, at least two locating studs of end face at valve body 4, present embodiment is provided with six locating studs 16, six end faces that are similar to flange plate that locating stud 16 grades divide 360 ° of ground to be arranged in valve body 4 axial ends, six locating studs 16 insert respectively and form circumferentially being located by connecting of valve body 4 and stepper motor 1 in corresponding six positioning holes 17 that are provided with of end face of stepper motor 1.The fixedly connected screw rod 2 of the overhanging end of the rotating shaft 1a of described stepper motor 1, overhanging end interference fit at the rotating shaft 1a of stepper motor 1 connects the connecting sleeve 7 that a cross section is a flat, and by the cross section be the connecting sleeve 7 of flat insert form in the flat holes that screw rods 2 axially are provided with circumferentially fixedly connected.Described spool 6 tail ends axially are provided with tapped hole and screw rod 2 screw-thread fit, form a bolt and nut mechanism, and the thread section of this bolt and nut mechanism adopts fine thread to cooperate, and its fit tolerance is at 0.00～0.05mm, to guarantee the accuracy of valve core movement.Spool 6 circumferentially can be located among the valve pocket 4a along valve body on ground, location axially, symmetry is provided with 2 axially extended chutes 18 on the valve pocket 4a wall of valve body, can be provided with 2 protruding 6a radially symmetrically along the tail end circumference of the spool 6 of valve body axial displacement, in the chute 18 of protruding 6a corresponding matching on valve cavity wall on the spool, make spool 6 circumferentially locate and can be engaged in axially among the valve pocket 4a of valve body along valve body.Greater than spool 6 displacement stroke in valve pocket 4a, spool 6 circumference are embedded with O type circle 3 to the length of described chute 18 approximately, and the matching gap of spool 6 circumference and valve body 4 makes and can form an airtight air-flow path among the valve pocket 4a with 3 sealings of O type circle.The front end of spool 6 has a linear cone 8 that changes hole internal pore sectional area gradually that is that can insert in outlet nozzle 9 holes of valve body axial end, this cone 8 is an overall structure with spool 6, the diameter of cone 8 big ends is identical with outlet nozzle 9 hole inner diameters, can form the closure to outlet nozzle 9.The linear cone 8 that changes hole internal pore sectional area gradually that is of described spool 6 is the needle-like cone, the cone angle of cone is 10～30 °, guarantee that cone forms an elongated relatively needle-like cone, when in it enters outlet nozzle 9 holes, making displacement movement, can utilize its needle-like cone that hole internal pore sectional area is carried out the change of trace, realize trace adjusting the gas flow that passes through.The linear root that changes the cone 8 of hole internal pore sectional area gradually that is of described spool 6 is provided with circular groove, and a seal washer 5 that is used to seal outlet nozzle 9 apertures is enclosed within circular groove tightly, can prevent that seal washer 5 from coming off.The described seal washer 5 that is used to seal outlet nozzle 9 apertures is the cone seal packing ring, and the conical surface of sealing packing ring is corresponding with the conical surface that the valve pocket inner orifice of outlet nozzle 9 is provided with, and when spool 6 is closed the aperture is sealed the raising sealing effect; Perhaps, the seal washer 5 that is used to seal outlet nozzle 9 apertures is the plane sealing packing ring, and the plane of sealing packing ring 5 is corresponding with the valve pocket inner orifice plane of outlet nozzle 9, also can reach effect same.Valve body 4 is fastened together in opposite directions by upper and

lower casing

15a, 15b after circumferentially dock the location with stepper motor 1, and the end that valve body 4 has air inlet nozzle 10, outlet nozzle 9 stretches out housing 15 outward.The inwall of upper and

lower casing

15a, 15b is arranged with to stepper motor 1 rib 13 in fixed respectively, after upper shell 15a and lower shell body 15b are fastened in opposite directions, the rib 13 in fixed to stepper motor 1 on upper and lower casing 15a, the 15b inwall is supported on the central position with stepper motor 1, guarantees the coaxality of machine shaft 1a, screw rod 2, spool 6, outlet nozzle 9; Also be respectively equipped with 11 pairs of stepper motor 1 axially locating of symmetrical positioning plate in upper and lower casing 15a, the 15b, assemblage gap between stepper motor 1 and the positioning plate 11 is lined with rubber cushion 14, elasticity by rubber cushion 14 make stepper motor 1 tightly axially locating in housing 15, prevent stepper motor 1 axial float.Described rib 13 and positioning plate 11 are molded in upper and lower casing 15a, the 15b, become one structure respectively with upper and lower casing 15a, 15b.Be mounted with printed circuit board 12 with screw among the described upper shell 15a, stepper motor 1 is electrically connected with power supply and microcontroller by printed circuit board 12.Described valve body 4 is provided with six rib annular grooves 19 around circumference, is respectively equipped with trapeze cut 20 on upper and lower casing 15a, the 15b and cooperates 19 with six rib annular grooves with valve body 4 circumferential and axially locating, prevents that valve body 4 from circumferentially rotating and axial floats.Upper and

lower casing

15a, 15b fasten in opposite directions, with valve body 4 and stepper motor 1 fixing after, available rubber sleeve prevents that with upper and

lower casing

15a, 15b banding (not shown go out) upper and lower casing is separately.

During the work of the utility model mortor operated valve, by rotating shaft sense of rotation and the angle of swing of microcontroller according to the required air compensation control step motor of motor, rotating shaft drives the screw rod rotation, screw rod rotating band movable valve plug is along valve body axial displacement, straight line moves forwards or backwards, the mortor operated valve aperture is adjusted in cone displacement in the outlet nozzle of valve body by the spool front end in good time, it is long-pending to be the free cross-section that gas passes through in the linear micro change outlet nozzle hole, flow to gas carries out the trace adjusting, accurately control air compensation, make the combination gas that enters engine chamber reach the optimal air combustion ratio, reduce the harmful substance of toxic emission, and improve the effect of motor, save fuel oil, reduce noise.

Valve body 4 of the present utility model, housing 15 employing metallic material or plastic production are all passable, and be lower with the plastic materials fabricating cost.

The utility model is used for replenishing the embodiment of secondary air-supplementing valve of air for combination gas of motorcycle engine except that above-mentioned, under the principle that does not break away from essence spirit of the present utility model, also can change the device that need convection cells such as being used for water heater, air conditioner is regulated a little, to improve the precision of regulated fluid flow, realize energy saving purposes.

Claims

1. regulate the mortor operated valve of controlling fluid flow for one kind, comprise valve body, spool, stepper motor, be respectively equipped with in the connection on the valve body, the connection nipple of downstream line, it is characterized in that: a connection nipple of described valve body be positioned at valve body an axial end and with the valve pocket coaxial inner conductor of valve body, another axial end and the stepper motor of valve body circumferentially are located by connecting, the fixedly connected screw rod of the overhanging end of the rotating shaft of stepper motor, described spool tail end axially is provided with tapped hole and cooperates with this screw flight, spool can be located in the valve pocket along valve body with circumferentially locating axially, the matching gap of spool and valve body seals with O type circle, the front end of spool has a linear cone that changes hole internal pore sectional area gradually that is that can insert in the connection nipple hole of valve body axial end, the diameter of the big end of this cone is identical with connection nipple hole inner diameter, valve body and stepper motor are fastened together in opposite directions by two housings, and the end that valve body has connection nipple stretches out housing outward.

2. the mortor operated valve of adjusting control fluid flow according to claim 1, it is characterized in that: the valve cavity wall of described valve body is provided with axially extended chute, can be provided with projection radially along the spool circumference of valve body axial displacement, in the chute of protruding corresponding matching on valve cavity wall on the spool, make spool circumferentially locate and can be engaged in axially in the valve pocket of valve body along valve body.

3. the mortor operated valve of adjusting according to claim 1 control fluid flow is characterized in that: described spool to be the linear cone that changes hole internal pore sectional area gradually be the needle-like cone, the cone angle of cone is 10～30 °.

4. according to the mortor operated valve of the arbitrary described adjusting control of claim 1～3 fluid flow, it is characterized in that: the linear root that changes the cone of hole internal pore sectional area gradually that is of described spool is provided with circular groove, and a seal washer that is used to be tightly connected the mouth aperture is located at circular groove.

5. the mortor operated valve of adjusting according to claim 4 control fluid flow is characterized in that: the seal washer in the described mouth aperture that is used to be tightly connected is the cone seal packing ring, and the conical surface of sealing packing ring is corresponding with the conical surface of the valve pocket inner orifice setting of connection nipple; Or the seal washer in the mouth aperture that is used to be tightly connected is the plane sealing packing ring, and the plane of sealing packing ring is corresponding with the valve pocket inner orifice plane of connection nipple.

6. the mortor operated valve of adjusting control fluid flow according to claim 1, it is characterized in that: the end face of described valve body is provided with at least two locating studs, forms circumferentially being located by connecting of valve body and stepper motor in the corresponding positioning hole that is provided with of end face of locating stud insertion stepper motor.

7. according to the mortor operated valve of claim 1,2 or 6 arbitrary described adjustings control fluid flows, it is characterized in that: described valve body is provided with six rib annular grooves around circumference, and the trapeze cut that is provided with respectively on two housings cooperates with six rib annular grooves locatees valve body.

8. the mortor operated valve of adjusting according to claim 1 control fluid flow is characterized in that: be provided with to stepper motor rib and positioning plate in fixed in the described housing.

9. according to the mortor operated valve of claim 1 or 8 described adjusting control fluid flows, it is characterized in that: wire board is installed in the described housing stepper motor is electrically connected with power supply and microcontroller.

10. the mortor operated valve of adjusting control fluid flow according to claim 1, it is characterized in that: the overhanging end of the rotating shaft of described stepper motor and a cross section are the connecting sleeve interference fit of flat, and by the cross section be the connecting sleeve of flat insert form in the flat hole that screw axial is provided with circumferentially fixedly connected.