CN1311179C - Throttle valve and weft inserting device of jet loom equipped with the throttle valve - Google Patents
Throttle valve and weft inserting device of jet loom equipped with the throttle valve Download PDFInfo
- Publication number
- CN1311179C CN1311179C CNB011375914A CN01137591A CN1311179C CN 1311179 C CN1311179 C CN 1311179C CN B011375914 A CNB011375914 A CN B011375914A CN 01137591 A CN01137591 A CN 01137591A CN 1311179 C CN1311179 C CN 1311179C
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- Prior art keywords
- valve
- valve body
- latitude
- throttle valve
- throttle
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/306—Construction or details of parts, e.g. valves, ducts
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/3053—Arrangements or lay out of air supply systems
Abstract
There is provided a high-precision throttle valve that has a small loss of pressure and is capable of easily regulating a flow rate. Furthermore, there is provided a weft insertion apparatus in a jet loom provided with a throttle valve having such characteristics. The throttle valve of the present invention includes a valve hole bored so as to be orthogonal to a fluid channel and a valve body inserted into the valve hole so as to be rotatable about an axial center, in which a concave engraved portion whose depth is continuously varied in a circumferential direction is formed on a circumferential surface of the valve body at a position corresponding to an opening of the fluid channel. Furthermore, a weft insertion apparatus in a jet loom of the present invention includes the throttle valve, and the fluid channel connects a compressed air source regulated for pressure in a jet loom to a nozzle for injecting the compressed air.
Description
Technical field
The present invention relates to carry out the throttle valve that the pressure fluid flow is regulated, specially refer to the weft inserting device that in jet loom, has adopted this throttle valve, for this jet loom, arrive latitude and be provided with switch valve with nozzle or the fluid passage that is disposed at the pilot jet in the latitude path, switch by this switch valve carry out above-mentioned go into latitude with the compressed-air actuated supply of nozzle or pilot jet with stop to supply with, this goes into latitude with the compressed-air actuated effect of the injection of nozzle or pilot jet when the open state by above-mentioned switch valve, and weft yarn is introduced wherein.
Background technique
For instance, in jet loom, as shown in Figure 1, after set reduction valve 2 is adjusted to setting pressure in pressurized air first pipeline 3 in compressor equal pressure source 1, introduce in pressurized air supply bin 4 and the storing compressed air supply bin 4.At this compressive force source 1, reduction valve 2, first pipeline 3 are generically and collectively referred to as source of compressed air with pressurized air supply bin 4.Pressurized air after second pipeline 5 is regulated flow by throttle valve 6, suitably is fed into weft inserting nozzle 8 by electromagnetic switch valve 7 from pressurized air supply bin 4.
Weft yarn is ejected in the warp thread aperture from going into weft inserting nozzle 8 by pressurized air.At this moment, for the time that the weft yarn front end is arrived knit end constant, need suitably regulate from going into the compressed air require that weft inserting nozzle 8 sprays by electromagnetic switch valve 6 according to the weft yarn kind and all operation conditionss.
Open in the disclosed weft inserting device of flat 4-214442 communique the spy and to have proposed following throttle valve gear.Specifically, have earlier in the device at this, as shown in Figure 2, by source of compressed air by the road 10 pressurized air that import enter pipeline 11 from valve opening 13, again from here by behind the valve opening 14,12 send into nozzle by the road.
Valve body 15 is oppositely arranged with valve opening 13, and valve 16 is oppositely arranged with valve opening 14.Valve body 15 is and has the cylindrical of section 17 of cutting sth. askew.In pipeline 10 by being that the center is done revolution and regulated with the axle center, the aperture that can regulate this valve opening 13 in the side of the relative valve body 15 of valve opening 13.Regulate compressed-air actuated flow by regulating this aperture.At this moment the angle of revolution of valve body 15 with the relation of the effective sectional area of stream shown in the plotted curve of Fig. 3 A.Corresponding, the angle of revolution of valve body 15 with the pressure dependence of the entrance part of nozzle 8 then shown in Fig. 3 B.In addition, valve opening 14 is by being done to open and close suitably by the valve 16 of solenoid 18 operations.
But in above-mentioned prior art, when valve body 15 is partly inaccessible with valve opening 13, become the sectional area rapid change of the part of gate dam stream before and after it for compressed-air actuated flowing.So the pressure loss that causes because of gate dam is very big, the result just has the problem that is difficult to obtain in the entrance part of nozzle 8 fully high static pressure.In addition, can produce the bigger blocked state that causes than actual gate dam, also have the problem of the Flow-rate adjustment precise decreasing that makes pressure air by contracted flow.Have again, when the tortuosity of fluid passage greatly then can be aggravated the problems referred to above.
At CN1032846A (US4,858, a kind of liquid flow control valve is disclosed 887), wherein liquid stream is to control by the cylindrical body of a pair of periphery contact, described cylindrical body is installed in the valve pocket that is made of upper and lower and cylindrical wall face portion, each described cylindrical body has the half slot of taper on its circumferential surface, this groove forms an opening, thereby described cylinder physical efficiency realizes the liquid current control around the size that parallel rotational changes this opening between the closed position of described control valve and open position; Described cylindrical body has the half slot of taper on its circumferential surface.
Summary of the invention
The problem that the present invention is conceived to exist in the aforementioned prior art proposes.Thereby main purpose of the present invention is to provide the throttle valve that pressure loss is few, Flow-rate adjustment is easy and precision is high.
Another object of the present invention is to provide the weft inserting device in the jet loom that is equipped with this kind throttle valve.
In order to achieve the above object, according to the present invention, provide a kind of throttle valve, it comprises with the fluid passage quadrature and runs through the valve opening of setting; And the valve body of intercalation in this valve opening, this valve body can be that adjusting is turned round at the center with the axle center; On this valve body and outer circumferential face described fluid passage openings portion opposite position, be formed with the degree of depth along peripheral direction continually varying intaglio portion; The degree of depth of described intaglio portion is along with the convergence peripheral direction is deepened at leisure, and then shoals at leisure; Described intaglio portion is constituted by the part circular cone that is formed centrally in the axle center with respect to the axle center off-centre of described valve body being.
According to the present invention, because mild in the part place of throttling stream profile change, the pressure loss is few, is difficult for causing contracted flow, also because the variation of stream sectional area is linear with respect to the angle of revolution of valve body, and carries out Flow-rate adjustment easily.
Because the degree of depth of above-mentioned intaglio portion is along with the convergence peripheral direction is little by little deepened, and then shoals gradually, the evener cunning of variation of the stream sectional area of throttling part, the pressure loss also diminishes.
Have again, because aforementioned intaglio portion constitutes with the part circular cone that is formed centrally in by the axle center with respect to the axle center off-centre of above-mentioned valve body being.By such formation, easily do the intaglio portion that simple machining forms above-mentioned valve body by lathe.
It is cylindrical that above-mentioned valve body is formed, and forms simultaneously described intaglio portion on the aforementioned outer circumferential face of columniform above-mentioned valve body, and the track with the corresponding aforementioned intaglio of the revolution of above-mentioned valve body portion is intersected with the aforesaid fluid path.So just can make the sectional area that is passed through follow the variation that rotation produced of cylinder shape valve milder.
In addition, the actuator of the output shaft that is equipped with electric driving is set,, also can does revolution and regulate aforementioned valve body by this actuator is installed on the above-mentioned output shaft.So just, can make the revolution of above-mentioned valve body regulate automation.
The central shaft of aforementioned valve opening preferably is set to the position with respect to the eccentricity of central axis of above-mentioned fluid passage.By this structure, even under the state of throttling, also can guarantee to have certain big or small stream all the time.
According to another aspect of the present invention, weft inserting device in a kind of jet loom is provided, when it was equipped with aforesaid throttle valve, the aforesaid fluid path became the fluid passage that connects the adjusted source of compressed air of pressure in the jet loom and spray this compressed-air actuated nozzle.
According to the present invention, can in jet loom, utilize the effect of above-mentioned throttle valve.Specifically, in jet loom, regulate owing to can carry out very fine pressure with the state of going into latitude, so can when the latitude function is gone in raising, reduce compressed-air actuated consumption according to the kind of used weft yarn.
In the weft inserting device in above-mentioned jet loom, what described nozzle preferably was used to introduce weft yarn goes into the latitude nozzle, and the weft inserting device in jet loom also is equipped with to be located at and connects above-mentioned source of compressed air and go into switch valve on the latitude usefulness aforesaid fluid of nozzle with this, undertaken that by this Push And Release that starts valve of conversion this is gone into latitude and supply with and end to supply with described pressurized air with nozzle, under the open state of this switch valve, go into latitude and be used for introducing described weft yarn with the blast injection of nozzle by above-mentioned, go into the latitude cycle for each, regularly control the throttle of this throttle valve corresponding to the Push And Release of above-mentioned switch valve.
In jet loom, go into latitude and go into the latitude state with influence with what the sharp fall characteristic of the jet pressure of nozzle can be given weft yarn.Going into latitude when closing control, go into latitude and just fall sharply with the jet pressure in the nozzle with after the nozzle supply and ending to supply with compressed-air actuated switch valve.Therefore, because the kind difference of yarn, weft yarn can vibrate and easily come off with lax, and the quality of weaving cotton cloth is descended.
For fear of going into the sharp fall of latitude with jet pressure in the nozzle, had such method: going into latitude between injection tailend with nozzle, drive signal with respect to the electromagnetic switch valve output pulse sequence, the switch electromagnetic switch valve makes latitude reduce slowly at the jet pressure that sprays when finishing with nozzle fast and intermittently.
But when the beginning of switch electromagnetism fast and intermittently valve, need to use can the hypervelocity operation electromagnetic switch valve.When adopting this electromagnetic switch valve, its life-span replys the electromagnetic switch valve of performance and can shorten significantly than the previous standard of using that has.
The present invention can need not be this improves latitude with the jet pressure characteristic in the nozzle with the electromagnetic switch valve of hypervelocity operation.Go into latitude and can select to adjust by the throttle of the throttle valve different, thereby can not need to require switch valve to do the operation of hypervelocity for obtaining desirable jet pressure characteristic with switch valve with the jet pressure characteristic of nozzle.
Preferably possess at the control gear of going into the above-mentioned throttle valve throttle of switch timing controlled of the corresponding above-mentioned switch valve of energy in each cycle of latitude, so that can regulate the throttle of throttle valve more simply.
Above-mentioned throttle valve preferably is located at the upstream side of aforementioned switches valve.The upstream side of switch valve can be avoided the medium-term and long-term state that keeps residual pressure in its downstream, be suitable for use as throttle valve the place appropriately is set.
In addition, above-mentionedly go into latitude and can be used as latitude at least with main nozzle or go into latitude with pilot jet one of in the two with nozzle.
Description of drawings
Fig. 1 illustrates compressed-air actuated feed path in the jet loom;
Fig. 2 is the explanatory drawing that shows the throttle valve gear in the bright existing device;
Fig. 3 A is that the plotted curve, Fig. 3 B that show the relation of the angle of valve body in the bright existing device and stream effective sectional area is the plotted curve that shows the relation of the angle of bright valve body and pressure efficiency;
Fig. 4 is the partial sectional view (throttle) of throttle valve in the present invention's the 1st form of implementation;
Fig. 5 is a throttle valve cut-away section front view (open state);
Fig. 6 is a throttle valve cut-away section planimetric map (open state);
Fig. 7 is throttle valve cut-away section front view (a part open state);
Fig. 8 is a throttle valve cut-away section front view (throttle);
Fig. 9 A shows that plotted curve, Fig. 9 B of relation of the effective sectional area of bright valve body angle and stream is the plotted curve that shows the relation of bright valve body angle and pressure efficiency;
Figure 10 A is that the sketch map, Figure 10 B that show the pressurized air feed path of bright second form of implementation is to be the sectional drawing that shows bright valve opening maximum rating along the sectional drawing of Figure 10 A-A line, Figure 10 C;
Figure 11 A is the plotted curve of explanation jet pressure characteristic; Figure 11 B shows that bright valve opening is that sectional drawing, Figure 11 C of zero state is that sectional drawing, Figure 11 D that shows the state of bright valve opening maximum is the plotted curve of the existing jet pressure characteristic of explanation;
Figure 12 A is that the sketch map, Figure 12 B that show the pressurized air feed path of bright the 3rd form of implementation is the sectional drawing along the B-B line of Figure 12 A;
Figure 13 A is that the sectional drawing, Figure 13 B and Figure 13 C that show bright valve opening maximum rating are that sectional drawing, Figure 13 D that shows bright valve opening minimum state is the plotted curve of explanation jet pressure characteristic;
Figure 14 is the plotted curve of the different jet pressure characteristic of explanation;
Figure 15 is the plotted curve of the different jet pressure characteristic of explanation;
Figure 16 is the plotted curve of the different jet pressure characteristic of explanation;
Figure 17 is the sketch map that shows the pressurized air feed path of bright the 4th form of implementation.
Embodiment
Below referring to description of drawings best form of implementation of the present invention.At first referring to Fig. 1 of explanation prior art, its basic structure is identical when the present invention is used for jet loom.Therefore only attached with new label (60,80,90,100) to throttle valve involved in the present invention, and miscellaneous part is continued to use identical label.
Form of implementation 1
Now throttle valve 60 of the present invention is described in detail in detail according to Fig. 4～8.In main body 61, be provided with the fluid passage 62 that is communicated with second pipeline 5 with connecting, be provided with valve opening 63 along direction simultaneously with connecting with fluid passage 62 quadratures.The state so fluid passage 62 and 63 one-tenth of valve openings are interconnected.To make it with its axle center be that the center is done revolution and regulated to the columniform valve body 64 of intercalation in the valve opening 63.The central shaft of valve opening 63 then is provided with respect to the eccentricity of central axis ground of fluid passage 62.Even the stream sectional area that makes fluid passage 62 by throttle valve 60 hour like this, the pressurized air that also has some all the time flows through.But according to the diameter and the offset of valve body 64, also might make the stream sectional area is zero, and promptly throttle valve closes and closes.Described after seeing for details.
The end upper cap from main body 61 projections at valve body 64 is provided with the knob 65 that is used to turn round regulation valve body 64.On the other hand, the other end from main body 61 projections of valve body 64 then is equipped with and prevents the circlip 66 that comes off.Near the two ends of valve body 64, carve and be provided with seal groove 67, wherein embed and be useful on the seal ring 68 that keeps airtight.
Near valve body 64 axial substantial middle, on its outer circumferential face, carve and be provided with the degree of depth along peripheral direction continually varying intaglio portion 69.This intaglio portion 69 for example can utilize lathe that valve body 64 folders are scheduled eccentric position, and one side is rotated one side formation simply with the cutter head cutting.At this moment, briefly, by the intaglio portion 69 that has been combined to form of top and the bottom circular cone 70a, 70b.Thereby the degree of depth of intaglio portion 69 along the circumferential direction changes (increase continuously, reduce continuously then) continuously.The sectional area that is to say this stream is a continually varying.In addition, intaglio portion is combined into by mutual reverse part circular cone, and the result makes the stream section of intaglio portion triangular in shape, but is not limited to the structure of this shape, thereby the stream section that also can make intaglio portion is deformed into for example semicircle, various shapes such as quadrilateral.
The effect of this form of implementation is described again.Operator can rotate valve body 64 by knob 65 and regulate the compressed-air actuated flow (and then the pressure of weft inserting nozzle 8 entrance parts is gone in adjusting) that is fed into weft inserting nozzle 8.In other words, suitably regulated the effective sectional area of the stream of intaglio portion 69 formed fluid passages 62 by rotating valve body 64.
Shown in Fig. 6 (and Fig. 5), when the center line S of valve body 64 (forming the line in the axle center of the axle center of part circular cone 70a, 70b of intaglio portion 69 and valve body 64) is in position with the axle center quadrature of fluid passage 62, intaglio portion 69 become flow path width G1 to become maximum.Also be that the stream sectional area becomes maximum.When valve body 64 is turned left 90 ° the time, promptly become state shown in Figure 7.This moment, the flow path width of intaglio portion 69 formation was G2.Valve body 64 forwards position shown in Figure 8 again to then.On this position, part 71 becomes salable state, and the flow path width G3 that intaglio portion 69 forms becomes minimum, and promptly the stream sectional area becomes minimum.The stream sectional area changes (referring to Fig. 9 A) smoothly continuously between above-mentioned maximum and minimum value, thereby the pressure of going into weft inserting nozzle 8 entrance parts of trying to achieve can obtain the relation shown in Fig. 9 B, becomes structure easy to control and that precision is high.
The rotation of valve body 64 is regulated and is undertaken by knob 65 with hand by operator, but also can be without this knob, actuators such as stepper motor, servomotor, solenoid are connected with valve body and automatically adjust.Thereby can make the integral body of carrying out this compressed air require control system constitute the form of automatic control, and will be in later on to this explanation.
Above illustration throttle valve 60 is located at situation in source of compressed air that connects jet loom and the fluid passage of going into weft inserting nozzle 8 (going into the main nozzle that latitude is used).But also can in the fluid passage that connects set a plurality of pilot jets and source of compressed air, throttle valve be set along the folding length direction (promptly along the path of introducing weft yarn) of jet loom.
Form of implementation 2
Make the throttle valve 80 of second form of implementation that the present invention specializes below according to Figure 10 and 11 explanations.At first do not dislike structure repeatedly is described simply, label shown in Figure 10 A 8 refers to go into the main nozzle that latitude is used, and weft yarn Y is by going into the injection of latitude with main nozzle 8, injects in the Warp opening and is gone into latitude.Label 4 is pressurized air supply bins.The pressure of pressurized air supply bin 4 is by reduction valve 2 pressure regulation.Pressurized air supply bin 4 is connected with electromagnetic switch valve 7 through supplying pipe 85.
At the intermediate portion of supplying pipe 85, be formed with valve opening 91 orthogonally with fluid passage 141 with respect to the pressurized air in the supplying pipe 85.The rotating mode of valve body 87 is installed in the valve opening 91, and promptly the center of rotation axis 161 of valve body 87 is provided with orthogonally with respect to fluid passage 141.Valve body 87 is installed on the output shaft 171 of stepper motor 88.Stepper motor 88 rotations drive the control that valve body 87 is controlled device 89 simultaneously.Control gear 89 is according to the detection information of the weaving machine turning angle of rotating coder 90 acquisitions that detect the weaving machine turning angle, and the revolution of control step motor 88 drives.Control gear 89 as control device is gone into the switch timing of latitude cycle corresponding to electromagnetic switch valve 7, the operation of control step motor 88 to each.
Shown in Figure 10 B, along the circumferential direction be formed extended at both sides intaglio portion 162 on the side face of valve body 87.Shown in Figure 10 A, intaglio portion 162 is combined to form by mutual reverse a pair of conical surface E1, E2.The degree of depth of intaglio portion 162 circumferentially deepens at leisure along with its convergence and then shoals at leisure.Intersect with fluid passage 141 with the track of the corresponding intaglio of the rotation of valve body 87 portion 162.When valve body 87 was arranged in the rotary position of Figure 10 A and 10B, the sectional area that fluid passes through in the valve opening 91 became zero, thereby the pressurized air of pressurized air supply bin 4 can not be supplied with electromagnetic switch valve 7.When valve body 87 was in the rotary position of Figure 10 C, the fluid in the valve opening 91 became maximum by sectional area, thereby the pressurized air of pressurized air supply bin 4 can be supplied with electromagnetic switch valve 7 with maximum flow.
More than the valve opening 91 of explanation has formed throttle valve 80 with the valve body 87 that is provided with intaglio portion 162.
The curve M of Figure 11 A shows the excitation signal of going into the electromagnetic switch valve 7 in latitude cycle with respect to each.Curve C 1 shows that each goes into the valve opening with respect to valve body 87 in latitude cycle, promptly passes through sectional area in the valve opening 91.With respect to the valve opening of valve body 87 full closing state of Figure 10 B and Figure 11 B is decided to be valve opening zero, and is set at maximal valve aperture H0 with the full-gear of Figure 10 C and Figure 11 C.Curve F1 represents is valve opening state shown in the curve C 1, be throttle and give excitation signal M each go into the latitude cycle and go into the jet pressure waveform of latitude with main nozzle 8.The curve F0 of Figure 11 D represents be under the situation of the throttle valve that does not have stepper motor 88 and valve body 87 to form to electromagnetic switch valve 7 excitations the time the injection corrugating.The transverse axis θ of each plotted curve represents the angle of revolution of loom.
Second form of implementation can obtain following effect.
(2-1), curve latitude that F0 is shown into has the characteristic of acute battle array with the jet pressure of existing situation in the main nozzle 8, the latitude of going into shown in the curve F1 in this form of implementation then has the characteristic that suppresses its sharp fall with the jet pressure in the main nozzle 8, suppressed to go into latitude and also just suppressed the vibration of weft yarn y, thereby prevented to doff or generation that weft yarn is loose with the sharp fall of jet pressure in the main nozzle 8.
This improvement of going into latitude with jet pressure characteristic in the main nozzle 8, the switch of electromagnetic switch valve 7 that can be by the throttle valve 80 different with the electromagnetic switch valve 7 regularly selection of corresponding throttle is regulated, thereby can not need to require electromagnetic switch valve 7 high speed operations electromagnetic switch valve that can high speed operation and improve latitude with the jet pressure characteristic in the main nozzle 8 for obtaining desirable jet pressure characteristic.
(2-2), even after electromagnetic switch valve 7 was transferred to closed state from open state, the fluid passage in electromagnetic switch valve 7 downstream sides also was in the state that residual pressure is arranged.This residual pressure state is longer, and going into latitude will be long with the time of jet pressure sharp fall in the main nozzle 8, causes that weft yarn is loose or go into latitude bad, and broken yarn easily takes place the latitude of going into of tender yarn.If throttle valve 80 is located at the downstream side of electromagnetic switch valve 7, the throttling action that valve body 87 the is produced residual pressure state in the electromagnetic switch valve 7 downstream side fluid passages that can extend, and be easy to produce aforementioned undesirable situation.Be located at the structure of electromagnetic switch valve 7 upstream sides when getting throttle valve 80, just help avoiding long-timeization of electromagnetic switch valve 7 downstream residual pressure states.
(2-3), the operation of control gear 89 control step motors 88 makes the order displacement of valve body 87 by rotary position shown in Figure 10 B-Figure 10 C-Figure 10 B and Figure 11 C.For the valve opening of valve body 87, be in the valve opening 91 fluid pass through sectional area, except that the shape that should consider intaglio portion 162, also to calculate according to the rotary position of valve body 87.Prestige can be tried to achieve by the pivotal position of specifying stepper motor 88 simply by the rotary position of the valve body 87 of basal area in the formation valve opening 91.
(2-4), by the driving of electric actuator stepper motor 88, realize the high speed rotary of valve body 87 easily, promptly turn round speedup and rotary decelerating promptly.Going into to make in the valve opening 91 this structure that changes by sectional area in per 1 cycle of latitude by valve body 87, the throttle that can make each throttle degree of going into the latitude cycle and so-called throttling timing is the most suitable when setting accordingly with the going into that latitude regularly matches of short time.
(2-5), the degree of depth of intaglio portion 162 is got the shape of circumferentially and slowly deepening and then slowly shoaling along with its convergence.It is continuous and mild that the valve body 87 that possesses the groove 162 that this shape is arranged makes that the variation of the break-make areas following the revolution of valve body 87 and take place becomes, and can improve the control accuracy of jet pressure characteristic.
(2-6), fluid passage 141 in the supplying pipe 85 and intaglio portion 162 constitute the path of straight lines.The fluid passage of this straight line shape can reduce the pressure loss effectively.
Form of implementation 3
The following describes the throttle valve 90 of the 3rd form of implementation of Figure 12 and 13, wherein identical with second form of implementation structure division is attached with identical label.
Identical with first form of implementation, the central axis 211 of the valve opening 92 of the throttle orifice 90 of the 3rd form of implementation is positioned at the position of the axis at the center of departing from fluid passage 141 shown in Figure 12 B.Shown in Figure 13 A, 13B and 13C, install the intaglio portion 221 that forms on the side face of the valve body 93 in valve opening 92 along extending circumferentially.Shown in Figure 12 B, intaglio gradually 221 is combined to form by reverse a pair of conical surface E3, E4 mutually.It circumferentially and at leisure deepens the degree of depth of intaglio portion 221 along with convergence, shoals gradually then.Intersect with fluid path 141 with the track of the corresponding intaglio of the revolution of valve body 93 portion 221.When the rotary position of valve body 93 in Figure 12 A, 12B and Figure 13 A, near the sectional areas that pass through the valve opening 92 become maximum.During the rotary position of valve body 93 in Figure 13 B and 13C, near the areas that pass through the valve opening 92 become minimum.
The curve C 2 of Figure 13 D show bright relative valve body 93 valve opening, be near the basal area of passing through of valve opening 92.With respect to the valve opening of valve body 93, with the throttle degree of Figure 12 A, 12B and Figure 13 A as maximal valve aperture H1, and with the throttle degree of Figure 13 B and 13C as minimum valve aperture H2.Curve F2 goes into the jet pressure waveform of latitude with main nozzle 8 when representing to provide by valve opening state shown in excitation signal M and the curve C 2.The operation of control gear 89 control step motors 88 makes valve body 93 change its rotary position by the order of Figure 13 A, 13B, 13C.Throttle shown in Figure 13 A, 13B, the 13C is corresponding to 1 cycle of going into latitude.
The throttle valve 90 of the 3rd form of implementation also can obtain with second form of implementation in (2-1)～(2-6) identical effect.
The present invention can realize that also the curve F5 of plotted curve among the curve F41 of plotted curve among curve F3, the Figure 15 of plotted curve among Figure 14 and F42 and Figure 16 shows bright jet pressure characteristic respectively.As can be seen from Figure 14, identical with the situation of second form of implementation, suppressed the sharp fall of jet pressure.Figure 15 is illustrated in the cut-out that produces when the weft yarn that imports in the latitude operation cuts off separation from weaving cotton cloth and vibrates the mitigation that gets owing to the jet pressure shown in curve F42.The sharp increase that suppresses jet pressure when Figure 16 is illustrated in tender yarn gone into latitude prevents broken yarn.
Situation in Figure 14 and Figure 16 adopts the throttle valve 90 of the 3rd form of implementation can provide valve opening curve C 3, C5.In the situation of Figure 15, the throttle valve of using in second form of implementation 80 can provide valve opening curve C 41, C42.
Embodiment's form 4
The throttle valve 100 of the 4th form of implementation of Figure 17 is described again, and wherein identical with second embodiment's formula structure division is attached with identical label.
The part place, right angle of fluid passage 231 is provided with valve body 95 in forming angled supplying pipe 94.In the valve body 95 that drives by stepper motor 88, be formed with inclined-plane 241.Inclined-plane 241 rotates between the solid line position of Figure 17 and dotted line position.The amount of restriction that valve body 98 forms is regulated by the rotary position of valve body 95.
The present invention also can have following each form of implementation.For example can be by servo motor driven valve body 87,93,95.In addition, when valve body 87,93,95 being configured to only between two positions conversion, just can drive valve body 87,93 and 95 by the rotor solenoid.Have again, can be the open type electromagnetic switch valve as throttle valve.Also throttle valve can be located at the downstream of switch valve.
In the above-mentioned form of implementation throttle valve is applicable to that the example of jet loom is illustrated, but the present invention is not limited thereto, so long as flow control is all applicable to the situation that likes pressure fluid.For example can be applicable to general air conveying and automobile fuel injection apparatus etc.
Claims (11)
1. throttle valve, it comprises:
With the fluid passage quadrature and run through the valve opening of setting; And
Intercalation is to the interior valve body of this valve opening, and described valve body can be that adjusting is turned round at the center with the axle center of valve body;
On this valve body and outer circumferential face described fluid passage openings portion opposite position, be formed with the degree of depth along peripheral direction continually varying intaglio portion;
The degree of depth of described intaglio portion is along with the convergence peripheral direction is deepened at leisure, and then shoals at leisure;
It is characterized in that,
Described intaglio portion is constituted by the part circular cone that is formed centrally in the axle center with respect to the axle center off-centre of described valve body being.
2. throttle valve according to claim 1, it is characterized in that, described valve body is cylindrical, has formed described intaglio portion on the described outer circumferential face of this columniform valve body, and the track of corresponding this intaglio portion of the revolution of valve body then intersects with described fluid passage therewith.
3. throttle valve according to claim 1 is characterized in that, also comprises being equipped with the actuator of being made the output shaft of revolution driving by electric power, and described valve body is then regulated by doing revolution on the described output shaft that is installed to this actuator.
4. throttle valve according to claim 2 is characterized in that, also comprises being equipped with the actuator of being made the output shaft of revolution driving by electric power, and described valve body is then regulated by doing revolution on the described output shaft that is installed to this actuator.
5. according to each described throttle valve in the claim 1～4, it is characterized in that the central shaft of described valve opening is arranged at the position of the eccentricity of central axis of described relatively fluid passage.
6. the weft inserting device in the jet loom, it is equipped with throttle valve; Described throttle valve comprises:
With the fluid passage quadrature and run through the valve opening of setting; And
Intercalation is to the interior valve body of this valve opening, and described valve body can be that adjusting is turned round at the center with the axle center of valve body;
On this valve body and outer circumferential face described fluid passage openings portion opposite position, be formed with the degree of depth along peripheral direction continually varying intaglio portion;
The degree of depth of described intaglio portion is along with the convergence peripheral direction is deepened at leisure, and then shoals at leisure;
Described intaglio portion is constituted by the part circular cone that is formed centrally in the axle center with respect to the axle center off-centre of described valve body being;
Described fluid passage is to connect the source of compressed air of having regulated pressure in this jet loom and the fluid passage that sprays this compressed-air actuated nozzle simultaneously.
7. the weft inserting device in the jet loom according to claim 6, it is characterized in that, described nozzle is for going into the nozzle of latitude to weft yarn, weft inserting device in this jet loom also includes to be located at and connects described source of compressed air and go into switch valve on the latitude usefulness described fluid passage of nozzle with this, Push And Release by this switch valve of conversion carries out that this is gone into latitude and supplies with and end to supply with described pressurized air with nozzle, under the on off state of switch valve, go into latitude and be used for introducing described weft yarn with the blast injection of nozzle by described, and go into the latitude cycle for each, then regularly control the throttle of this throttle valve corresponding to the Push And Release of described switch valve.
8. the weft inserting device in the jet loom according to claim 7 is characterized in that this weft inserting device also includes control gear, and it goes into the latitude cycle for each, corresponding to the throttle of the described throttle valve of Push And Release timing controlled of described switch valve.
9. the weft inserting device in the jet loom according to claim 7 is characterized in that described throttle valve is located at the upstream side of described switch valve.
10. the weft inserting device in the jet loom according to claim 8 is characterized in that described throttle valve is located at the upstream side of described switch valve.
11. the weft inserting device according in each described jet loom in the claim 7～10 is characterized in that, described go into latitude with nozzle be latitude at least with main nozzle or go into latitude with pilot jet among both one of at least.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP329890/00 | 2000-10-30 | ||
| JP2000329890A JP2002138349A (en) | 2000-10-30 | 2000-10-30 | Throttle valve and throttle valve for air jet loom |
| JP123746/01 | 2001-04-23 | ||
| JP2001123746A JP2002317350A (en) | 2001-04-23 | 2001-04-23 | Picking controller in jet loom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1351235A CN1351235A (en) | 2002-05-29 |
| CN1311179C true CN1311179C (en) | 2007-04-18 |
Family
ID=26602998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011375914A Expired - Fee Related CN1311179C (en) | 2000-10-30 | 2001-10-30 | Throttle valve and weft inserting device of jet loom equipped with the throttle valve |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1201805B1 (en) |
| KR (1) | KR100433883B1 (en) |
| CN (1) | CN1311179C (en) |
| TW (1) | TW507033B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4735099B2 (en) | 2005-07-25 | 2011-07-27 | Ｓｍｃ株式会社 | Fluid pressure cylinder device with throttle valve |
| EP2345756A1 (en) * | 2010-01-18 | 2011-07-20 | ITEMA (Switzerland) Ltd. | Control unit for air supply in a relay nozzle of an air jet weaving loom |
| CN103410999A (en) * | 2013-05-22 | 2013-11-27 | 麦特汽车服务股份有限公司 | Method for achieving purpose for regulating rates of flow precisely through flow control valve |
| US9759335B2 (en) * | 2014-05-01 | 2017-09-12 | Dresser, Inc. | Flow restrictor having multiple flow modifying regions |
| CN111853270A (en) * | 2020-08-06 | 2020-10-30 | 中建环能科技股份有限公司 | Air flow regulating valve |
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| GB863847A (en) * | 1956-06-18 | 1961-03-29 | Ian Nuttall Merrill | Improvements in or relating to valve apparatus for controlling the flow of fluids |
| GB2056027A (en) * | 1979-08-09 | 1981-03-11 | Bougainville Copper Ltd | A Valve |
| CN1003181B (en) * | 1984-12-28 | 1989-02-01 | 株式会社丰田自动织机制作所 | Device for inserting weft yarn in fluid jet loom |
| CN1003873B (en) * | 1985-06-06 | 1989-04-12 | 株式会社丰田自动机械制作所 | Method and apparatus for monitoring weft insertion in a fluid jet loom |
| CN1032452A (en) * | 1987-10-14 | 1989-04-19 | 地流国际有限公司 | Operated proportional flow control valve |
| CN1032846A (en) * | 1987-10-23 | 1989-05-10 | 地流国际有限公司 | The sealing of valve and valve roller |
| US5086812A (en) * | 1990-02-15 | 1992-02-11 | Picanol N.V., Naamloze Vennootschap | Weft thread supplying device with rotary throttle valve in airjet weaving machines |
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| CN1046975C (en) * | 1994-09-16 | 1999-12-01 | 皮克诺尔公司 | Throttle valve for compressed air or similar mediums and the use thereof in an air jet loom |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS596934B2 (en) * | 1978-02-10 | 1984-02-15 | 株式会社豊田自動織機製作所 | Auxiliary nozzle air supply method and device in jet room |
| JPS5947055B2 (en) * | 1980-01-08 | 1984-11-16 | 日産自動車株式会社 | Opening/closing valve for fluid injection looms |
| JPS58184579U (en) * | 1982-05-29 | 1983-12-08 | 株式会社豊田自動織機製作所 | Fluid control device in loom |
| JPH086058Y2 (en) * | 1989-10-06 | 1996-02-21 | 株式会社豊田自動織機製作所 | Air pressure adjusting device for weft insertion in jet loom |
| KR960009902B1 (en) * | 1993-02-13 | 1996-07-24 | 엘지전자 주식회사 | Digital audio infrared rays receiver |
| JPH06306737A (en) * | 1993-04-19 | 1994-11-01 | Toyota Autom Loom Works Ltd | Weft-insertion controlling apparatus for jet loom |
-
2001
- 2001-10-23 KR KR10-2001-0065353A patent/KR100433883B1/en not_active IP Right Cessation
- 2001-10-26 EP EP01125328A patent/EP1201805B1/en not_active Expired - Lifetime
- 2001-10-29 TW TW090126685A patent/TW507033B/en active
- 2001-10-30 CN CNB011375914A patent/CN1311179C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB863847A (en) * | 1956-06-18 | 1961-03-29 | Ian Nuttall Merrill | Improvements in or relating to valve apparatus for controlling the flow of fluids |
| GB2056027A (en) * | 1979-08-09 | 1981-03-11 | Bougainville Copper Ltd | A Valve |
| CN1003181B (en) * | 1984-12-28 | 1989-02-01 | 株式会社丰田自动织机制作所 | Device for inserting weft yarn in fluid jet loom |
| CN1003873B (en) * | 1985-06-06 | 1989-04-12 | 株式会社丰田自动机械制作所 | Method and apparatus for monitoring weft insertion in a fluid jet loom |
| CN1032452A (en) * | 1987-10-14 | 1989-04-19 | 地流国际有限公司 | Operated proportional flow control valve |
| CN1032846A (en) * | 1987-10-23 | 1989-05-10 | 地流国际有限公司 | The sealing of valve and valve roller |
| US5086812A (en) * | 1990-02-15 | 1992-02-11 | Picanol N.V., Naamloze Vennootschap | Weft thread supplying device with rotary throttle valve in airjet weaving machines |
| CN1036475C (en) * | 1992-09-09 | 1997-11-19 | 维兹库尼乌斯塔夫纺织施特罗尤利贝雷茨公司 | A method of insertion of the weft thread into the shed of an airoperated jet loom and a device for carrying out the method |
| CN1046975C (en) * | 1994-09-16 | 1999-12-01 | 皮克诺尔公司 | Throttle valve for compressed air or similar mediums and the use thereof in an air jet loom |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1201805A2 (en) | 2002-05-02 |
| CN1351235A (en) | 2002-05-29 |
| EP1201805B1 (en) | 2006-08-23 |
| KR20020033521A (en) | 2002-05-07 |
| TW507033B (en) | 2002-10-21 |
| KR100433883B1 (en) | 2004-06-04 |
| EP1201805A3 (en) | 2003-05-07 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20091130 |