DE2454365A1 - CONTROL VALVE FOR WATER TREATMENT PLANTS - Google Patents

Description

Patent attorneys

Dr. Ing.Walter Abitz ^ b ^ dbb

Dr. Dieter F. Morf

Dr. Hans-Α. Brauns November 15, 1974

8 Münc.-iGSi Zv, ι.-Fui-v: .i! 3is: r. 23 C-1017

CALGON CORPORATION

Route 60 - Campbell's Run Road, Robinson Township, Allegheny County, Pennsylvania, V.St.A.

Control valve for water treatment systems

The invention relates to viaduct treatment plants, and more particularly Control valves for two positions, as used in ion exchange water softening systems for regulating purposes the use and regeneration currents are used in this.

A typical water softener of the ones mentioned Art usually has a softening tank that contains an ion exchange medium, such as a bed of synthetic resin beads, contains, a saline solution tank, an injector for discharging saline solution from the saline solution tank, and a control valve for switching the use ^ - and

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Regeneration fluid flows through the softening tank.

A two position control valve of the type to which the invention is directed is with a spool valve provided in order to guide normally hard water in one direction through the softening tank to the operation of the system and subsequently a flow in the opposite direction through the saline solution tank and then rinse water for the To conduct regeneration operation of the system in the second position of the control spool,

The object of the invention is to create a control valve with two positions for one use and one Regeneration flow for water treatment systems, which valve is characterized by a compact design and simplicity of the structure to enable manufacture and repair at low cost.

The object of the invention also includes the creation of a control valve for water treatment systems, in which an improved slot arrangement ensures the desired compact design and simplicity.

Another object of the invention is to create a control valve of the type described with a valve element, that are moved back and forth between a use and a regeneration position by an adjusting device can, which is switched by an auxiliary valve, which also serves to connect one of two tank slots to be established in the valve body with a drainage slot, to which draining saline solution in the regeneration position of the valve element flows.

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The invention is described below in conjunction with the accompanying Drawings described in more detail, for example, showing:

Fig. 1 is a sectional view of a water treatment control valve according to the invention, which shows the control slide in its position of use, and

FIG. 2 is a view similar to FIG. 1, but showing the control slide in its regeneration position.

In the drawings, 5 generally indicates the body of the invention Use and regeneration flow control valve. The body is formed by several components, namely by a main body part, a front and a rear end cover 7 or 8 and an auxiliary housing 9. These components are secured to one another by suitable threaded fasteners (not shown) namely the auxiliary housing 9 on the upper side of the main body part 6 and in the vicinity of the front end cover 7.

A feature of the invention is that the body is either injection molded from a suitable high strength Plastic, such as "Noryl", can be manufactured or used as a Casting from one of the corrosion-resistant metals commonly used for water softening valves. In any case, the main body part 6 is provided with a connecting nipple 11, which protrudes from its underside and is provided with an external thread 12. With the help of the nipple can the control valve on the top of a water softening tank, which is indicated at 13, are attached. Furthermore, the nipple is formed with a flange 14, the a groove on its underside for receiving an O-ring 15

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has to seal the joint between the nipple and the tank.

The main body part 6 is formed with a chamber 17 which extends horizontally through this from the front cover 7 to rear cover 8 extends and is closed by the two covers. The front cover 7 is cup-shaped and preferably made of a transparent plastic. Its edge is at 18 with the front wall of the main body part 6 sealed and its hollow interior stands with an enlarged front part 20 of the chamber 17 in Cover and connection.

The hollow interior of the lid defines a front cylinder 21 and a rear cylinder 22 communicating with each other, the rear cylinder 22 being a larger one Has diameter than the front cylinder 21, but is coaxial with this.

In the chamber 17, a control slide 24 can be moved back and forth and extends with a shaft 25 forwards into the larger rear cylinder 2 2 in the cover. On the shaft 25, a stepped piston 26 is fastened by a screw connection 27. The smaller diameter portion 28 of the piston is movable to and fro in the front cylinder 21, while the piston 29 is of larger diameter in the rear cylinder 22 is reciprocable.

The piston and cylinder arrangement described forms a hydraulic actuator for the control slide, which actuates can be to the slide between its use position shown in Fig. 1 and its shown in FIG To move the regeneration position back and forth. The cylinders 21 and 22 normally contain hard water of the same

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Pressure, so that the fluid force of the control slide exerted on the rear side of the larger piston 29 in the cylinder 22 is held in a front end position of movement.

Only when the space in the cylinder 22 is diverted behind the larger piston, the fluid pressure force that acts on the front of the small piston in cylinder 21, effective in such a way that the control slide in its rear end position shown in Fig. 2 is moved.

The front or use position of the control slide is by the plant of the larger piston 29 on one after rearwardly directed annular shoulder 30 at the base of the larger cylinder 2 2 determined. The rear or regeneration position of the control slide is controlled by the system a valve disk 32 at its rear end on a forwardly directed annular valve seat 33 determined that on an inward extension

34 of the rear cover 8 is formed. This inner Extension 34 is made up of an enlarged rear part

35 of the chamber 17 added.

The slide 24 has a front and a rear Web 36 and 37, which are located at the opposite axial ends of a circumferential groove 38 in the slide. The lands and the groove act to control the connection between a number of slots and channels in the valve body together, as will be described in more detail below.

The main part 6 of the valve body is with adjacent Hard water inlet and use outlet slots 40, 41 are provided. These slots are on the opposite side of the body for connection to the water source or utility

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line (not shown) open. The inlet slot UO opens inwardly into the central part U 2 of small diameter
the chamber 17 and is closer to the front of the body than the use outlet Ul.

The use slot U1 opens inwardly into the chamber at a point which is slightly in front of the valve seat 33 and in alignment with the wall of an annular slide guide U3, which is formed by an enlarged front part of the inner extension 3U on the rear cover. The rear web 37 of the slide is guided for sliding forward and backward movement within the surrounding wall by the guide U3, openings UU act in this wall
with similar openings 45 in the wall of the cover extension 3U backwards from the valve seat 3 3 together in order to enable a flow of softened water to the usage slot Ul in the manner described in more detail below.

The front cover 7 is used to create a second annular
To hold the slide guide U7 in its position within the front chamber part 20. The side wall of the front guide surrounds the front web 36 of the slide and has guide abutment on this and is also with a number
provided openings U8 which connect the middle chamber part U2 with the enlarged, front chamber part 20 when the control slide is in its position of use shown in FIG.

The body is also provided with a first and a second
Tank slot 50 and 51 provided, which leads to the underside of the
Main body part 6 are open through the interior of the nipple 11. The first tank slot is directly with
the enlarged front chamber part 20 in connection, while the second tank slot 51 with the enlarged rear

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Canoe part 35 connected by a lateral branch 5 3 of the latter near the bottom of the body stands.

This lateral branch 5 3 of the chamber is partially through an inner wall part 54, which extends laterally transversely extends to her, and limited by a horizontal wall 55, which is located below the wall part 54 and is provided at the upper end of a connector 56. The hole in the connection forms the tank opening 51, which after opens into the lateral junction 5 3 of the rear chamber part 35 at the top.

The connection is used to accommodate the upper end of the long tube 57, which extends down into the softening tank in the substantially to the bottom of the same for embedding in the ion exchange chmaterial extends that extends in this is located. Although not shown, the lower end of the tube is provided with a large number of narrow slots, which prevent the fine beads of the ion exchange material together with the softened water occur during the upward flow of fluid in the pipe.

It should be mentioned here that the wall 55 and the opening forming connection to this part of a bung-shaped insert which is fastened inside the nipple 11 without interfering with the flow of fluid through that part of the nipple which forms the first tank opening 50.

The main body part 6 is also provided with an injector port 60 provided which are constantly connected to the use outlet 41 in Is connected and with one end opening of an injector 61 can be connected by a line 62. One

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Switching solution inlet port 6 3 in the middle of the rear Lid 8 is used to connect to the outlet end of the Injector through a line 64.

As usual, the injector has a side opening 65 which can be connected to a container or the like with concentrated saline solution, so that saline solution is sucked into the injector during the flow of hard water through the latter and the rear chamber part 35 through the saline solution. Inlet opening 6 3 in the cover 8 is supplied.

The auxiliary housing 9 is on the top of the main body part 6 immediately above an upwardly open cavity 67 attached in this. A bore 68 running through the bottom of the cavity to the enlarged front chamber portion 20 leads, cooperates with the cavity to delimit the inner end part of a discharge channel. The drainage channel extends through an annular valve seat 69 formed in the housing 9 upward and leads to a discharge opening 7 0, which leads out of the housing from a vertical recess 71 at the side, which also valve seat 69 is concentric and forms an outer end part of the discharge channel.

The counterbore 71 is formed at the inner end of a bore which is used to receive the shaft 7 in a sliding manner an auxiliary valve is used. The plate 7 3 of the auxiliary valve is located in the cavity 67 and is normally in abutment against the downwardly directed valve seat 69 held by a spring 74, whereby the drainage channel is kept separate from the discharge opening.

The larger cylinder 22 in the front cover 7 is through

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a channel 76 in the main body portion 6 both pressurized and diverted. One end of this channel opens into the cavity 6 7, while the other end of the same with the large cylinder 2 2 by notches 78 in the front Guide and an annular groove 79 is connected in its circumference.

From this it follows that the inner end part of the discharge channel, i.e. that part of the same which is below of the valve seat 6 9 is located, constantly with the first tank opening 50 and with the larger actuating cylinder 22 in the front cover 7 is in communication. Also will in the position of use of the control slide 24, the pressure of the hard water from the inlet slot 40 of the Back of the piston in the cylinder 2 2 communicated, so that the slide is in its front position shown in FIG is held. This is possible because the groove 38 in the slide and the openings 48 in the front guide then a connection between the inlet slot 40 and the bore 68 at the inner end of the discharge channel, while the cavity 67 is a permanent connection between the bore 68 and that leading to the cylinder 22 Channel 7 6 forms.

As soon as the plate 7 3 of the auxiliary valve is out of its seat

69 is lifted off, however, the cavity 67 brings the bore 68, the discharge channel 76 and the cylinder 22 with it the discharge opening 70 via the recess 71 in the auxiliary housing 9 in connection. At the same time, of course the first tank opening 50 also with the discharge opening

70 associated.

When the auxiliary valve is open, water can under pressure from the inlet slot 40 into the front end of the smaller one

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Cylinder 21 in the cover 7 flow to a force exercise the front of the piston 28 in this and thereby move the control slide backwards into its " to move regeneration position shown in Fig. 2. Such a flow from the water source into the cylinder 21 becomes, through the arrangement of coaxial channels 81 and 8 2 in the control slide or in its shaft. The channel 81 opens backwards into the groove 38 in the control slide, while the channel 8 2 forward through the differential piston 28, 29 into the space in the Cylinder 21 opens in front of piston 28 with the small diameter.

Way of working

The shaft 7 2 of the auxiliary valve protrudes upward from the auxiliary housing 9 to allow either manual or automatic actuation of the auxiliary valve, e.g. by means of a Time switch to enable the indicated at 84 and arranged on the upper side of the body part 6 of the valve body is. In any case, the auxiliary valve is kept closed as long as the control valve remains in use.

For purposes of explanation, it can be assumed that the first tank opening 50 is connected to the top of the tank of a downstream use upstream regenerative softener while the second tank port 51 is connected to the lower part of the tank through the pipe 5 7 is.

In the position of use, the rear web sits on the control slide in a U-Beeher seal in the valve body and

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the spool diverts incoming hard water Inlet slot UO to tank opening 50 for downward flow through the bed of ion exchange material in the softener tank. Soft water from the lower part of the softener tank flows upwards into the pipe 5 7 in the tank opening 51 and opens into the rear chamber part 35 through its side Extension 53. The soft water entering the chamber part 35 in this way flows forward through the now open valve seat 3 3 to the usage slot 41.

At this time, the water pressure at the inlet port also becomes UO in the rear part of the larger cylinder 22 in the cover 7 effective to the control slide in his To hold the position of use. Although the injector port 60 is also in communication with the rear chamber part 35 during this time, soft water does not flow through the injector, since its outlet end is also connected to the chamber part 35. This means that the Injector is ineffective because the water pressures at its inlet and outlet ends in the use position of the control slide are the same.

When the auxiliary valve is actuated so that it is lifted from its seat, a regeneration cycle is initiated, at which during the time that the auxiliary valve is open, a supply of saline solution and then done with a detergent. The duration of the supply of saline solution is usually determined by the The amount of saline solution that is available for delivery through the injector and the flushing process of the The cycle follows automatically after the supply of saline solution has been switched off.

When the auxiliary valve is lifted from its seat, will

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the tank opening 50 is brought into connection with the discharge opening 70 as well as the cylinder 22 of larger diameter of the hydraulic actuating device. Water from the supply source then flows into the front cylinder 21, with the result that the control slide is moved back to its regeneration position shown in FIG.

In this position, the web 36 of the control slide sits within another U-cup seal, whereby the Inlet slot HO is shut off from the upper end of the tank opening 50, while the slide groove 38 closes the inlet connects to the use slot Hl. In this way, hard water can cause irritation during use reach the entire period during which the auxiliary valve is kept open. Furthermore is during this Time the valve disc 32 on the control slide in contact with its seat 33, whereby the use outlet slot Hl is cut off from the large rear chamber part 35 and the lower end of the tank opening 51. Redirected Water from the inlet opening now emerges from the injector opening 60 and now flows through the injector 61 to Saline solution opening 6 3 for supplying this opening with saline solution which flows into the through the injector Water flow is derived.

The saline solution entering the large chamber part 35 in this way therefore inevitably flows downward through the lower end of the tank opening to regenerate the ion exchange material in the softener tank. The outflowing Saline solution exiting the top of the tank opening 50 flows through the open auxiliary valve to the drain opening 70.

Having a measured amount of saline solution through the injector

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has been supplied, the inflow of saline solution to this is through the usual float valve in the saline solution tank (not shown) turned off. Only clear hard water then flows through the injector and into the tank for flushing up the ion exchange material. The rinse water, of course, goes to the tank opening 50 for routing returned to discharge opening 70.

The flushing is ended as soon as the auxiliary valve is closed again. This can be done manually or automatically done under the control of the aforementioned timer. By closing the auxiliary valve again becomes the upper end of the tank opening 50 from the discharge opening 70 switched off, so that tank water that emerges from the opening 50 into the bore 68 of the discharge channel, through the cavity 67 and through the channel 76 behind the cylinder 22 of large diameter of the hydraulic Spool actuator flows. This naturally moves the control slide forward into its position of use driven back, in which it remains until the auxiliary valve is actuated again in its open position will.

It should be mentioned here that the actuation of the control slide into or out of its position of use through the arrangement of a relief bore 86 in the front Lid 7 is facilitated, which opens into the space of the actuating cylinder 2 2 at a point in front of the shoulder 30, which determines the front limit of the slide movement.

From the foregoing description, together with the accompanying drawings, it is evident that the invention an improved two-position control valve for water treatment systems which is easy to maintain and low in manufacturing cost.

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Claims (1)

C-1017 P ate η claims / IJ Utility and regeneration flow control valve for Water treatment equipment that has a body with a chamber for receiving a reciprocating motion Has control slide, wherein webs on the control slide serve to remove untreated water from an inlet opening through the mentioned chamber to a first tank opening in a position of use of the control slide to direct, in which the webs further treated water through the mentioned chamber to a use outlet lead from a second tank opening, characterized in that A. the mentioned body also has a discharge opening, an injector opening with the use outlet is in communication and a saline solution inlet port is continuously in communication with the second tank port stands; B. a channel is provided in the mentioned body, one end part of which is in communication with the discharge opening and the other end part of which is constantly communicates with the first tank opening via the aforementioned chamber; C. brought the mentioned webs on the control slide into a regeneration position when it is actuated can be, which is located from its position of use at an axial distance to the inlet opening with the injector and the use outlet - 14 - 5 0 9821/0983 openings to connect, however, from the first tank opening and from the other end part of the mentioned Turn off the channel and also turn off the use outlet from the second tank opening; D. a hydraulic adjusting device for the control slide is provided through which it can be held in its position of use, except, when a pressure chamber forming part of the actuator is drained; E-. a discharge channel is provided for the mentioned pressure chamber, which is connected to the other end part of the channel connected is; F »a valve normally provides the connection between the mentioned end parts of the channel keeps closed, however is movable in an open position to the mentioned pressure chamber and the first tank opening ■ to derive discharge opening. 2. Distribution valve for water treatment systems, the one Body with a chamber for receiving a reciprocating control disk, an inlet for untreated Water, a use outlet for treated water, a first and a second tank opening, a drain port, an injector port in communication with the use outlet and a saline solution inlet port, which is constantly in communication with the second tank opening, characterized by A. Bars on the control slide, which is in a position of use can be brought to direct inlet water to the first tank opening and treated water - 15 - 509821/0983 away to the use outlet from the second tank opening conduct; B. a channel in the mentioned body for connection the first tank opening with the discharge opening 5 C. A valve that goes in and out of a normally is movable closed position in which said channel is blocked; D. Which webs can be brought into a regeneration position of the control slide that differs from the Is in the use position at an axial distance to connect the mentioned inlet and outlet openings, shut off the inlet port from the first tank port and the second tank port from the use outlet switch off; E. A hydraulic adjusting device for the control slide, which serves to hold it in its position of use, except when a pressure chamber, which forms part of the actuating device, is derived; F. Means providing a relief channel for the aforementioned Form pressure chamber, which relief channel is in communication with the first tank opening and with the Discharge opening can always be brought into connection when the valve moves out of its closed position will; G. which webs on the spool serve in the Regeneration position to interrupt the connection between the relief channel and the inlet opening. 3, utility and regeneration flow control valve for water - 16 - 509821/0983 4} Serreprocessing systems in which the body of the valve is provided with a chamber which has a front, has a rear and a central part, characterized in that A. a control slide for axial forward and backward movement is carried out in the mentioned chamber between fixed limits; B. the body has a discharge channel, the inner end of which is open towards the front part of the chamber is; C. an auxiliary valve usually the mentioned drainage channel locks; D. a control slide adjusting device which is used to move the control slide in its front end position to hold when the auxiliary valve is closed, and a movement of the control slide in its rear Bring about end position when the auxiliary valve is opened; E. which body has (1) a first tank opening which is open to the front part of the chamber and thereby continuously with the inner one The end of the discharge channel. (2) a channel that connects to the rear of the chamber communicates and forms a saline solution inlet port, a second tank port continuously communicates with the saline inlet port and the use outlet with the injector ports connects, (3) and a water inlet port open to the central part of said chamber; - 17 - 509821/0983 F. the control slide moves into its front end position can be to the water inlet port and - the first tank opening to connect and a connection establish the second tank opening and the use outlet opening; G. Means, which the control slide in its rear end position render movable to shut off the first tank port from the water inlet; H. and other means that make the control slide operable in its rear end position to the second tank opening from the utility outlet switch off. H. Control valve according to claim 3, characterized in that the mentioned further means are formed by an annular valve seat on the body, through which the second tank opening communicates with the use outlet, and a plate at the rear end of the control slide is provided, which can be brought to bear on the seat mentioned in order to prevent the flow of fluid through it switch off in the rearmost end position of the control spool. 5 »Utility and regeneration flow control valve for Water treatment system that has a body with a chamber that extends from front to back extends this, characterized in that A. the chamber has a central part in which - 18 - 509821/0983 C-IO17 / sr flow untreated water from an inlet port can, and extended parts in front of and behind the middle part; B. Means on the body that close the enlarged chamber parts; C. a spool axially movable in the chamber between the defined end points; D »a front and a rear slide guide in the mentioned extended chamber parts with wall parts that surround the control slide in order to and backward movement to guide; E. The body is provided with a channel that is connected to the enlarged front part of the chamber communicates and has (1) a first tank opening, (2) a discharge duct, one end part of which is constantly in communication with the first tank opening and the other end part of which communicates with a sewer opening; F. the body has another canal that connects with the extended rear chamber part is in connection and has (1) a utility outlet and injector ports, (2) a second tank opening, (3) and a saline solution inlet port continuously in communication with the second tank port; G. Means in the body that form a water inlet port, which is open to said central chamber part; H. the spool has a circumferential groove to a Connection of the water inlet opening with the first tank opening and the mentioned one end part of the ab- - 19 - 509821/098 3 guide channel in the front control spool end position to form, as well as to create a connection of the water inlet opening with the use outlet and the Injector openings in the rear control slide end position and an auxiliary valve, which is normally the drainage duct closes, but derives the first tank opening in its open position; and an adjusting device for the control slide which is controlled by the auxiliary valve, which adjusting device serves to move the control slide into its front end position when the auxiliary valve is closed, and to cause a movement of the control slide in its rear end position when the auxiliary valve is opened. 6, control valve according to claim 5, characterized in that A. Provide the spool guides with guide rods which extend in the axial direction of the control slide in contact with webs on this; B. which guide rods are spaced from one another in the circumferential direction in order to form openings, through which fluid from the water inlet opening to the first tank opening, from the second tank opening to the Use outlet port and from the saline port . can flow to the second tank opening. 7. Use and regeneration flow control valve for Water treatment plants, characterized by - 20 - 509821/0983 Α · a body with a first and a second Chamber, two tank openings and a drainage channel, which is in communication with one of the mentioned tank openings and leads to a discharge opening; B, a control slide in the mentioned first chamber, which is between a certain position of use and a certain regeneration position is movable in the chamber, in which regeneration position the control slide is used to direct waste water to the drainage channel from said one tank opening; C. an adjusting device for the control slide, which comprises the mentioned second chamber and can be actuated is to move the control slide into its regeneration position when the mentioned second chamber is relieved; D. Means that form a relief channel for the mentioned second chamber, which leads to the discharge opening via a Part of the mentioned drainage channel leads; E, and an auxiliary valve that normally closes the mentioned part of the discharge channel and that in a Open position is movable to simultaneously the second chamber and the mentioned a tank opening with to connect the discharge opening. 8. Use and regeneration flow control valve for water treatment systems, which has a body with a chamber extending from the front end of the body to the latter rear, characterized in that A, said chamber has a central part and front and has an enlarged chamber part at the rear; - 21 - 509821/0 9 83 B. Lids are attached to the front and rear of the body and close the enlarged chamber parts; C. a control slide in said chamber can be moved back and forth between certain end points; D »a front and a rear control slide guide in the enlarged chamber part with wall parts which are axially spaced apart from one another of the control slide and this to move back and forth in the chamber to lead; E. The body has a channel which is in communication with the front chamber part and a first tank opening forms, and a discharge channel which is in communication with the first tank opening and to a Discharge opening leads; F. the body has a further channel which can be brought into communication with the rear chamber part can, as well as a use outlet port, an injector port, a second tank port and a saline solution inlet port, which last two openings are constantly connected to each other; G. means forming in said body a water inlet port which is open to said chamber; H. the control slide has a circumferential groove for connecting the water inlet opening and the first tank Opening in the front end position of the control slide and for connecting the water inlet opening with the use outlet opening and the injector opening in the rear end position of the control slide; I. cooperating means are provided on the body and on the control slide, which serve in the front - 22 - 509821/0903 * End division of the control slide to seal the inlet opening from the use opening; J. interacting means on the body and on the control valve are provided, which are used in the rear end position of the control slide, the water inlet opening to seal against the first tank opening and also the second tank opening and the saline solution inlet opening to seal against the use outlet opening; K. a hydraulic adjusting device is provided for the control slide, which has a pressure chamber, which, when exposed to the pressure at the mentioned water inlet port, the control slide holds in its front end position which adjusting device causes the control slide to move into its rear end position when the pressure chamber is relieved will; L. Means are provided in the body which form a channel through which the pressure chamber to the discharge opening can be relieved, which channel has a branch that leads to the front chamber part and with the inlet opening through openings in the wall of the front guide and the control spool groove are connected in the front control spool end position can; M · and a valve separate from the control slide is provided, which normally forms the mentioned channel closes in order to control the connection of the first tank opening and the pressure chamber with the discharge opening. - 23 - 5 0 9821/0983 Flow control valve according to Claim 8, characterized in that A. the front and rear spool guides are held in place by covers; B. the front lid is cup-shaped; C. and the hydraulic actuator is located in the hollow interior of the front cover. - 24 - 509821/0983 L e r s e i t e