CN1070245C - Cas reverse valve - Google Patents

Abstract

A system for treating packages of yarn with liquid comprises a treatment vessel (8), a reversing valve housing (2) integral with the vessel (8) and containing a reversing valve (9), a low pressure pump (1) close coupled to the housing (2) and supplying treatment fluid around a unidirectional large bore piping system (3, 3a, 3b) and control means (23, 24) to operate the reversing valve (9) to change the direction of flow of liquid within the treatment vessel (8) from inside to outside of the packages of yarn to outside to inside and vice versa.

Description

Utilize liquid to handle the system of yarn package

The present invention relates to utilize liquid to handle the technical field of yarn package.

The yarn that is applicable to the weaving purpose has formed the tubular package that is wound on tube core that can be saturating traditionally.These volume bags have been bearing on many ingots carriage, and its carriage has feed flow hole, a center in the bottom, and by its feed flow hole, treat liquid is arrived vertical spindle by dispensing, and therefrom radially by tubular volume bag.

By being contacted with some fibre generation physics with relevant chemical substance, dyestuff carries out yarn dyeing, said fiber is in suspension handling by solution or water, and liquid circulates through material, and the material that is passed through is by being carried out processing in some pump installation mode.

The mobile device that commutates of some this treat liquid also is provided usually, handles to attempt on whole barrel gross thickness, all to press, and have now found that flowing is useful with frequent commutation clocklike.

Some producer uses axial-flow pump to be used for circulating fluid, and every a few minutes brake pump and restart pump, reaches level dyeing to realize frequent commutation.For large capacity motor, this is very difficult and is uneconomic.Such pump usually oneself is produced by dyeing apparatus manufactory, and comprises that a series of rotors, this rotor have the complete blade of rotation radial arrangement, and its blade alternate is in being similar between the complete fixed blade.This pump performance characteristics are not suitable for handling highdensity package, and they can not improve enough fluid pressures and be penetrated in the fiber, and described fiber is such as resembling cotton or cotton/polyester blended yarn, especially with the sewing thread form.This high pressure that can not improve means that such pump also is not suitable for being used for the pipe-line system of liquid by high-drag.

Such pump normally vertically is installed in the bottom of container, and the leakage of sealing up from axle makes the electric drive motor easily infringement that becomes, and requires to use belt transmission.

Rotation and fixed component each other at a high speed by then can producing eddy current and shearing, dyestuff meticulous that they tend to destroy some extremely important types causes distribution.

Because pump is placed on the center of process vessel, if be not impossible words, allow it be used for filling separately, the liquid of discharging or carry processing is to other container or to carry out these work from other container be very difficult, and some attachment devices must be provided.Owing to these reasons, such circulatory system seldom adopts on present industry.

Any stainless steel centrifugal pump that many world dyeing installation producers use can obtain from local supplies.Even need not have several such manufactories to have to be used for to make the equipment of their own heavy stainless cast steel parts yet.

It is paper and chemical process industry (CPI) that common industry is used for this always, and it must use some very complicated and spiral circulatory systems, and the process of some continued operations that comprise sometimes only is to be stopped for ordinary maintenance.These system requirements " spiral " type centrifugal pump, wherein with the performance of the discharge pressure of appropriateness because the machine-shaping of pump case and being abandoned provide them so that the speed that liquid is left impeller becomes pressure, making its operation overcome system's high-drag becomes possibility.Improve shell holder, the performance loss of low-pressure is reduced with regard to whole effect.Because such pump can be easy to from the manufactory that is produced obtain, what can not feel surprised is, many dyeing machines are formed according to their operating position, in fact, they are left in the basket to the adverse effect of dyeing machine structure, think advantage and even offer the user mistakenly no problem.

The shortcoming of a this high pressure pump is that container pressure must be increased to and can bear high pressure, thereby has increased expense when they use at the device that designs for the high wet practice with the commutation of flowing.

Because the delivery outlet that this pump has is more young than their sucking-offs, for the purpose of economy, form the circulatory system that has identical less delivery outlet size around their dyeing machine gradually.They are similar to the chemical-treating facility that has adopted original pump that has designed, also use some valves and heat exchanger, its system to have similar little circulating area in pipe-line system, and have corresponding high total systemic resistance.

According to the requirement of some suppliers, their more such pumps are satisfied with the high industrial standard of its this type of pump, and described requirement becomes meaningless owing to the low hydraulic efficiency of this system.

Even this type improved design by some dyeing machine the biggest in the world manufactories, it is common having only 10% hydraulic efficiency altogether.

The ceiling capacity loss can occur on the heat exchanger that is arranged in rows, and this heat exchanger generally absorbs more than 30% of energy that power offers device.When filling, extracting out or carrying liquid, reversal valve and be connected to the input port of container and delivery outlet joint or from input port and delivery outlet joint that container is drawn, valve together with series connection, these valves can be used for producing miscellaneous function, these members can consume other 30% energy with amount, and remaining 30% energy will count on members such as the pipe-line system that constitutes actual dyeing machine, valve, support.

Cycle through the treat liquid of yarn and the mechanical support system of its yarn, dye bobbin, spindle and support account for the very sub-fraction that is applied to device power, therefore most of heat is lost, and the also many needs of the cooling water of continuous-flow carry out K cryogenic treatment.

This defective is not in the manufactory of pump, they are clear fully, and the design of some factors and system is relevant, for example, a kind of DURCO pump handbook is pointed out " friction loss is inversely proportional to five powers of caliber ratio ", and this just means, a small amount of increase in zone can just in time compensate the shape in the passage coideal.The cross-sectional diameter of an output system doubled to reduce the small cymbals that rubs and lose about 3%, although simplified such system, at this moment the identical caliber that is kept only can very small amount of minimizing required horsepower, and in the circulatory system, utilize some small diameter tubes and member, at this moment the money of Jie Yueing also helps manufactory thus, but has increased the cost of electricity and cooling water for the user of machine.

Reversal valve in dyeing machine is the rotation L type of existing minimum cost generally, the whole volume by-passing of working fluid is got back to be in commutation or partially opened in the pump under the condition, when the merit of minimum is just being done when being used for load, consequently current of electric consumes maximum.This is undesirable at any time, and for example when handling a part of load, especially reversal valve is used to control by load flow speed during whole whole dye cycle.

The cross force that formed by high-speed liquid tends to be pressed onto on the horizontal valve in this device, and stainless cast steel part often produces each other and rub small cymbals and " wearing and tearing " (Gall), and this can give the matching surface roughening, and can cause it to stop operating fully.

In some beam dyeings; the common practice that is used for many yarn dyeings forms; it provides a choke valve on the outlet of pump, and closes it before rotating reversal valve, therefore stops all flowing; and from this cross force of reversal valve elimination; change the position of reversal valve then, and open this choke valve, or preset a position or be scheduled to a pressure differential; a whole circulation is 45 seconds, makes to restart very lenitively in the opposite direction to flow.

Comprise the cotton fiber that some are placed side by side through axle, they form very solid group, are difficult for infiltration, because fiber absorbs moisture content and expansion, they become closely and be finer and close.This permeates it with regard to meaning requirement than the higher pressure of any its weaving package.At this simultaneously, it has very little intensity in a lateral direction, and fiber is separated easily so, like this " impact " (Blowing) through axle, thereby can produce a passage, incurs loss by this channel liquid leakage and pressure.

Fiber adjacent to this passage is extended, and only improves and can obtain repairing by shut-down operation through the structure of axle, and reels through axle again.

From technological standpoint, production process is reasonably, owing to close choke valve and stop to flow, this flows and reduces motor current and net positive suction head (NPSH) requires minimum, and this has just reduced the tendency that produces foam.The position of change reversal valve stops along with flowing, thereby has overcome the inherent shortcoming on " bypass " reversal valve, and this just makes cycling rate, motor current and net positive suction head rise to maximum.

The suction attachment of the pump that need require handle with high-temperature is applied in a pressure that is less than the steam pressure summation, and its steam pressure is to add the net positive suction head that is used for the specific pump flow corresponding to desired temperature in use.In fact desirablely be that what the actual pressure on mouth piece may will be a little than the safety coefficient that is provided is big.

For failing to provide the loss of enough pressure is cavitation erosion and pump characteristics decay, and the efficient that dyes accordingly reduces, and has the possibility of non-level dyeing.

A kind of loss of more difficult appearance is the cavitation erosion at initial stage, and wherein steam bubble is trickle size sometimes, is formed on the rotor that enters the mouth, and forms eddy current before the rotor leaf, and they can not produce tangible minimizing when pump discharge head.Adopt the water of cleaning, these tiny steam bubbles can disappear, they along with and enter into higher pressure span.Yet most dyeing is handled and is comprised soap, washing agent and other chemical substance, and they can make steam bubble become more lasting.They are shown as foam subsequently, and enter into other zone of equipment, particularly enter in the slit of yarn, thereby they can hinder the free gateway of dyeing liquid to yarn, and can cause uneven dyeing.

This tendency is arrived hour and owing to all these reasons, it is normally rational to stop to flow, but makes mobile this tendency that increased of by-passing in commutation.

Yet in common pipe-line system, very the measure of Xi Wanging is the choke valve that requires to have at the outlet connector of pump a whole system scale, and an automatic operator utilizes essential device to realize the operation of order.

Can obtain identical effect by the opening that separates reversal valve, a wide valve face is provided between opening, make valve become a kind of " throttling " type, rather than " bypass " type, so that during commutating, flow is reduced to zero automatically, and motor current is to minimum.Yet owing to further increased diameter of the housing, L shape thing can increase the weight of the generally acknowledged problem of L type valve in its housing.

For early stage designer, the L shape thing of rotation may occur with the logical course of reverse flow, but it provides a kind of undesirable direction sudden change, and is that it is more effective, and it requires big diameter, accurate casing.Along with the loss of characteristic, also must keep big gap to avoid in the lower surface wearing and tearing of turning back.

Relate to a kind of " bypass " formula valve among the US 3581528, valve mechanism wherein is mounted in the butterfly valve at pipeline center, when the flow rate that flows through load in processing procedure was reduced to minimum of a value, the flow rate in major circulatory system rose to maximum in the centre position of its stroke." do not flowing " on the point by this of load, pump pressure is reduced to minimum of a value, thereby pump can not provide auxiliary conversion purpose.

The object of the present invention is to provide a kind of improved system that utilizes the liquid handling yarn package, wherein make reversal valve become " throttling " type from " bypass " type, flow reduces automatically during commutating, and motor current consumption also significantly reduces.

According to the present invention, a kind of system that utilizes the liquid handling yarn package, comprise a container handling, a commutation valve casing that becomes integral body with container handling, a low-lift pump and a big flow cross section pipe-line system, described pipe-line system connects described pump and forms a liquid one-way flow loop with the commutation valve casing, it is characterized in that: described reversal valve is the barrier type reversal valve, this valve is made up of a cylindrical housings and an oval dividing plate, the dividing plate that tilts is assembled in the housing centre position, on housing, two oval-shaped holes are arranged, the liquid that dividing plate will flow through described two holes is separated, its centre position in adjusting range is used as choke valve, when being in static or flowing through yarn with the flow that reduces, the liquid in the container handling forms a kind of " stop valve " state, in this state, can be auxiliary conversion the total pressure of pump is provided, thereby in major circulatory system, need not to be provided with big shutoff valve.

Advantageously, low-lift pump is a kind of collecting ring centrifugal pump.

Be preferably the heat exchanger that the heater coil that is provided in the container handling replaces series connection.Because pump is closely connected reversal valve, also in container, the remarkable ratio of pipe-line system loss can be eliminated this valve.

Advantageously a kind of like this system provides one from loading to the unrestricted path of mouth piece joint, this discharge area is never less than the area of mouth piece joint like this, and a unrestricted path from the pump discharge joint to load is provided, this discharge area is never less than the area of pump discharge joint like this.

Flow direction by load preferably can be provided as a kind of like this form, the outlet area is reduced to zero gradually by rotating the valve on any one direction, oral area is to arrange like this, so that the suction inlet area keeps bigger than outlet area in the whole time, therefore dyeing machine is under any such throttling condition and operation continuously, and to pump not have infringement or any other from the harmful effect of cavitating.

The suction inlet joint of delivery side of pump and pump can advantageously be closed by further rotating valve, in " not flowing " position, so that constitute the filling that can obtain assisting and the pump of turned letter function by external lug, and in major circulatory system, do not require big shutoff valve.

The number that hinders or flow through the change in liquid flow path cross section can be reduced to minimum, and its area that can not save can increase to maximum, has therefore reduced the expense of ring liquid.

By the valve of all series connection is removed other fluid resistance that can eliminate liquid flow from system, described this valve is blade type or " butterfly " type normally, when opening, still has significant resistance.If make this reversal valve that total function of damming can be provided, function is used some other valve in the upper pipe system usually with glue hereto, so because saving of the valve of series connection and their automatic operator must reduce the expense of dyeing machine.

Because the area that liquid must flow through can and require the power of circulating fluid to reduce by very big increase, valve is contained in whole inside, and container handling has reduced the flow resistance of reversal valve.

Can find out easily that thus if can use a pump of lower pressure efficiently, the motor by a smaller power can provide a given performance in the container of a lower pressure value so.

Because such system loss reduces to the sub-fraction of their traditional degree, need pump to provide a high discharge pressure no longer to exist, and the DESIGNED FEATURE that is provided can be saved, and be attended by shearing, the minimizing of eddy current and NPSH, because working fluid flows through impeller blade shapes more accurately, and flow into reposefully in the complete ring-type collecting ring, it will design a rule and a more effective pump after all.

Be preferably, reversal valve is a kind of barrier type reversal valve.

Further specify the present invention below in conjunction with accompanying drawing by enforcement, wherein:

Fig. 1 utilizes liquid to handle the perspective diagram of the system of yarn package according to the present invention;

Fig. 2 is the perspective cutaway view, of a reversal valve of Fig. 1 system, and this reversal valve is the position that is in the ecto-entad commutation;

Fig. 3 is that valve shown in Figure 2 is in a commutation position and comprise a partial sectional view that is used to handle the yarn container from inside to outside;

Fig. 4 is the schematic plan view of a kind of conduit arrangements of Fig. 1 system;

Fig. 5 is the profile that is cutd open along arrow V-V direction among Fig. 4, and wherein reversal valve is in the position of being flowed laterally by the inboard;

Fig. 6 is a diagrammatic sketch that is similar to Fig. 5, wherein is rotated 180 ° valve and is in position by the lateral flows inside;

Fig. 7 is a diagrammatic sketch that is similar to Fig. 5, and wherein reversal valve is rotated 90 ° position and does not at this moment flow;

Fig. 8 is a diagrammatic sketch that is similar to Fig. 5, and wherein reversal valve is rotated 270 ° position and does not at this moment flow;

Fig. 9 is a diagrammatic sketch that is similar to Fig. 5, and wherein reversal valve is rotated 292.5 ° of positions and is used for turning back to a storage tank.

Now referring to accompanying drawing and at first referring to Fig. 1, a kind of system that utilizes liquid to handle yarn package comprises a pump, an afflux as shown in the figure, and ring-like centrifugal pump 1, this pump rotates by a not shown motor; A reversal valve that is installed in the housing 2, an output end connector 4 pump 1 is connected in the large diameter pipe 3 of the input joint 5 of reversal valve housing 2; A large diameter pipe 3,3a is the output end connector 7 that is connected in pump 1 to the output flange 6 of valve chest 2; And comprise container handling 8 (see figure 3)s that are installed on the reversal valve housing 2.Fluid is according to the direction uniaxially shown in arrow circulation among Fig. 1, and promptly through pipe 3,3a is to reversal valve housing 2 from pump 1 for fluid, and turns back to pump 1 by managing 3b, and pump 1 described here is irreversible.The angle position of a reversal valve 9 in reversal valve housing 2 is determining fluid to flow through in the flow direction that is installed in the yarn tube 10 on the support 11 in container.Therefore, according to this locational reversal valve 9 shown in Figure 3, entering fluid in the joint 5 of reversal valve housing 2 upwards flows through a central vertical conduit 12 and flow in the support 11, and flow to its outside from the inboard of support, promptly flow to radially outwardly on the yarn tube 10, and under drop in the container 8, through a porous bearing 13, then flow through passage 14 around on the reversal valve housing 2 one, liquid leaves the reversal valve housing and flows through pipe 3b and turn back to pump 7 through flange 6 then.

Position according to the described reversal valve 9 that flows that provides of Fig. 3 is indicated among Fig. 5.Housing 2 can be thought to be had than a needed less diameter of the L shaped short tube of rotation, and at this moment, provides one to be used for the big zone that fluid flows, and does not have the unexpected change of flow direction in reversal valve housing self inside.Fluid is by an end of its devices of flange 5 input, and the fluid load of directly upwards flowing through is returned through overload then and is downward through big space 14, and outwards flows to by flange 6 in the suction joint 7 of pump 1.

If reversal valve rotates 180 ° and arrives position shown in Figure 6, the fluid (as shown in Figure 2) that flow in the housing 2 by flange 5 passes through valve 9 and quilt bias current downwards, make fluid upwards flow and this space 14 of process, outwards flow through porous bearing 13, radially inwardly flow through yarn tube 10 then and to spindle 11, also flow into centre pipe 12 thus downwards, outwards flow through flange 6 then.Flow through situation and Fig. 3 of load and shown in Figure 5 complete opposite of Fig. 2 and fluid shown in Figure 6 like this.

Valve 9 is columniform and wide supporting can be provided in the both sides of opening, its both sides itself play sealing function and utilize supporting valve 9 to reduce leakage, and rubbing surface makes and might use tighter gap whereby, rather than the small diameter shaft supporting has certain distance with respect to the cooperation mouth place of L type valve usually.Total mechanical efficiency just can obtain thus, and any multifunctionality that does not have loss before in the circulatory system, to provide by some extra tandem valves.

The resistance of whole system fluid flow can be reduced to certain degree widely, and no longer requires to use a high-pressure pump, and the ring-like centrifugal pump 1 of shown afflux can provide enough pressure.This pump can reach the extraordinary characteristic curve of tool, and it is suitable for the requirement of yarn package maximum, and can produce less disorder or shearing in responsive dye liquor.Can obtain for the processing desired increase operating efficiency of given yarn load and minimizing power, time and water by described this structure, and this equipment can easier be made, operation and installation.

Fig. 7 shows the position that reversal valve 9 is in 90 °, promptly is located at the position between Fig. 5 position and Fig. 6 position.Along with valve flowing full on the direction rotates, 90 ° of these no flow locations through Fig. 7 rotation, rotate the flowing full of other direction again, when two of the connections of the main line between valve and the pump were all closed, the electric current that motor drives the ring-like centrifugal pump 1 of afflux also dropped to minimum constantly in no flow locations.

In case this situation forms, that is, the ability of cutting off circulation is fully arranged in major circulatory system, and need not to use stop valve, this just might provide some suitable connections, so that use existing passage to carry out the task that other desired additional external some valves and pipe arrangement are done.

Pipe 3 shown in Fig. 4 comprises a joint 16 that turns back to storage tank, a bypass connector 17 that is connected to centre pipe 12 by pipe 18, and it has a vacuum and extracts joint 19 out, shown pipe 3b comprises 20, one joint 21 and discharging joints 22 of filling water of joint of filling from storage tank.Fig. 4 also shows motor 23 and the geared system 24 that is used for driver's valve 9.

The fabulous real work hole that utilizes that is designed to of reversal valve 9 provides assurance, in working hole, see the rotation that helps valve from manufacturing and inspection viewpoint, and when changing supporting (its supporting is to be formed by the material of being sold at registration mark teflon (Teflon)), also help the dismounting and the replacing of valve.

When valve 9 has the angle position (as shown in Figure 7), container 8 can pass through joint 21 fill fluid from a storage tank.A valve of filling bypass channel and same size is provided at pump discharge joint to the flows inside line.Because container 8 is connected atmosphere and valve open, its machine can be filled out by package and be abandoned, air is because the filling of yarn and from its discharge, this has just reduced the possibility of aeroseal in the gap of yarn, this just might remain with as little bubble and produce and not dye a little in this case, so that yarn is invaded wet along with partially filled process, but in filling accelerator, it also might arrive in the pump 1.

Because valve 9 is in identical position, also possible is liquid to be filled in the machine from storage tank by joint 20, when reversal valve 9 has been full of by liquid and has started pump 1 subsequently, except liquid level sensor will show, identical structure will be used among the above-mentioned situation.Liquid will be transmitted in addition, and along with the effect of filling process, liquid passes load soaks it.When storage tank emptying, sensor will cut out filling-valve, and conventional commutation program will start.

In all cases, the water that enters flows through pump 1, from inside to outside flows then and passes load, is used for being provided by the water of supplying with from the pressure of load expulsion air, is provided by pump 1 under second kind of situation.

Vacuum state can be used in the top of filling device from the storage tank to the container by being communicated with a vacuum source, and opens tank valves.In 270 ° of positions of 90 ° of positions of Fig. 7 and Fig. 8, valve 9 is closed, and liquid can not circulate in main system.For to make liquid turn back to storage tank by joint shown in Figure 4 16, then valve 9 turns to 292.5 ° of positions shown in Figure 9 in main system.Because the outlet on the eccentrically arranged valve, the absorption joint 7 of pump can be connected to the bottom of device, and the discharge joint 4 of pump can be connected to the joint 16 towards storage tank.Although the suction inlet on the valve is not opened when it is operated fully, but enough zones can be used to liquid is extracted out from the bottom of container, and be injected into storage tank, up to a sensor brake pump that matches, and close tank valves, yet it is unworkable replacing symmetrical valve with eccentric valve, unless it has specific requirement easily to returning liquid to storage tank, but had better use a symmetrical valve.

Along with a series of short vacuum that repeats is extracted out with the locational valve 9 of Fig. 7, a vacuum is extracted circulation out and can be carried out, allow vavuum pump reach the vacuum state of its maximum, open vacuum valve then and allow vacuum action in load, before shut off valve, make it drop to consistent degree, and before repetitive cycling, allow it restore to the original state again.

Although the shown system that utilizes liquid to handle yarn package is the system of an arranged vertical, it is an embodiment of an optimizer system, other configuration of some that might comprise also that water is arranged.

Claims (4)

1. system that utilizes the liquid handling yarn package, comprise a container handling, a commutation valve casing that becomes integral body with container handling, a low-lift pump and a big flow cross section pipe-line system, described pipe-line system connects described pump and forms a liquid one-way flow loop with the commutation valve casing, it is characterized in that: described reversal valve is the barrier type reversal valve, this valve is made up of a cylindrical housings and an oval dividing plate, the dividing plate that tilts is assembled in the housing centre position, on housing, two oval-shaped holes are arranged, the liquid that dividing plate will flow through described two holes is separated, its centre position in adjusting range is used as choke valve, when being in static or flowing through yarn with the flow that reduces, the liquid in the container handling forms a kind of " stop valve " state, in this state, can be auxiliary conversion the total pressure of pump is provided, thereby in major circulatory system, need not to be provided with big shutoff valve.

2. system according to claim 1, it is characterized in that: form a unconfined path from the suction inlet joint that loads to pump, make its discharge area never less than the area of mouth piece joint, form a unconfined path from the outlet joint of pump to load, make its discharge area never less than the area of the outlet joint of pump.

3. system according to claim 1, it is characterized in that: the flow direction by load can be changed in the following manner: the outlet area is reduced to zero gradually by rotating valve on any one direction, oral area is to arrange like this, so that the suction inlet area keeps bigger than outlet area in the whole time, therefore dyeing machine is under any such throttling condition and operation continuously, and to pump not have infringement or without any other from the harmful effect of cavitating.

4. according to claim 2 or 3 described systems, it is characterized in that: the suction inlet joint of delivery side of pump and pump is closed in " not flowing " position by further rotating valve, so that make the filling that pump can obtain assisting and the function of turned letter by external lug, thereby in major circulatory system, need not big shutoff valve.

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