WO2015117762A1 - Slide valve, in particular for use in conveying systems with conveying lines, and method for actuating a slide valve of this type - Google Patents

Slide valve, in particular for use in conveying systems with conveying lines, and method for actuating a slide valve of this type Download PDF

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Publication number
WO2015117762A1
WO2015117762A1 PCT/EP2015/000240 EP2015000240W WO2015117762A1 WO 2015117762 A1 WO2015117762 A1 WO 2015117762A1 EP 2015000240 W EP2015000240 W EP 2015000240W WO 2015117762 A1 WO2015117762 A1 WO 2015117762A1
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WO
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Patent type
Prior art keywords
slide
characterized
drive
valve according
gate valve
Prior art date
Application number
PCT/EP2015/000240
Other languages
German (de)
French (fr)
Inventor
Walter Kramer
Original Assignee
Walter Kramer
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Publication date

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means

Abstract

The slide valve has a slide (1, 1a) with a passage opening (25). A drive (82) is provided for adjusting the slide (1, 1a). The slide is connected via a dog (36, 80, 90, 91, 99) to the drive (82). The dog is loaded with force in at least one adjusting direction (9) of the slide (1, 1a). In the open and/or closed position of the slide (1, 1a), a rise in the force which acts on the dog is detected by a controller of the drive (82) and is used to switch off the drive. A time window is monitored by way of a time controller, within which time window the slide (1, 1a) passes into the open or closed position thereof at a first time value and the rise in force occurs at a second subsequent time value.

Description

Slide valve, in particular for use in transport systems with conveyor lines, and methods for operation of such a gate valve

The invention relates to a slide valve, in particular for use in transport systems with conveyor lines, according to the preamble of claim 1 and a method of operating such a gate valve according to the preamble of claim 23rd

Spool valves are used to feed lines, is conveyed by the material to be conveyed, such as plastic pellets, to release or to close. For this purpose, the slider is moved by a pneumatic cylinder or by means of a stepping motor between the closed position and the release position. These drives are very complex and costly.

The object of the invention is based is to design the generic slide valve and the generic method in such a way that with an inexpensive training a reliable operation of the spool valve is ensured.

This object is achieved in the generic slide valve according to the invention with the characterizing features of claim 1 and the generic method according to the invention with the characterizing features of claim 23rd

CONFIRMATION COPY The inventive slide valve, the slide is provided with a driver, via which the slide is drivingly connected to the drive. In at least one direction of adjustment of the slide, the driver, and thus the slide is force-loaded itself. In the release and / or closing position, the slide bears against a stop. The drive performs first in this stop position its driving force to the slide continued. This leads to an increase in the force acting on the driver or on the slide force. This force is detected by the recording control of the drive. The controller generates a shutdown signal, with which the drive is then switched off.

The force absorption can be detected directly by means of suitable sensors, the sensor signals the control of the drive to be supplied.

In another inventive embodiment of the slide valve, the drive torque generated by the drive is detected. As soon as the slide moves into its stop by a predetermined release and / or closed position, which further leads generated by the drive driving torque to an increase of the recording current of the drive. The recording current is detected by the controller of the drive and, when it reaches a predetermined value, used for switching off the drive.

In an advantageous embodiment, the carrier is displaceable along a guide.

It is preferably a guide pin, which passes through the driver and along which the driver upon displacement of the slide is moved.

The guide pin is held at an advantageous embodiment, at its ends in bearing pieces. Preferably, the bearing pin is releasably connected to the bearing pieces so that it can be easily replaced if necessary. The guide pin is longer than the driver. In the area between the driver and the bearing pieces of the guide pin is in each case surrounded by at least one compression spring. It is advantageously a helical compression spring.

In an advantageous embodiment, the compression springs are prestressed. Thereby, the driver is held in a middle position between the two pressure springs which are supported with their ends at the bearing pieces as well as on the driver.

The bearing pieces are advantageously rigidly connected with a toothed rack.

The rack is displaceably guided in a preferred embodiment in the displacement direction of the slider. An engaging with the rack gear moves the rack. Since the bearing pieces are secured to the rack, they are moved and also the guide pin in the direction of the slide.

The compression springs are biased so that the driver and the compression springs form a unit which is displaced together with the guide pin and the rack. Only when the slide reaches its respective stop-limited end position, at least the further compressed, a compression spring, upon further stress on the rack in the direction of displacement, which results in the force acting on the catch increase in force.

The axis of the gear extends transversely preferred, in particular perpendicular to the displacement direction of the slider. This allows easy application of force from the gear to the rack is possible.

The actuator can be fixedly connected to the gear or the gear shaft. It is advantageous, however, if the gear-bearing shaft can be coupled via a plug-in coupling with the drive shaft of the drive. A space-saving construction is obtained when the drive is located essentially next to the slider.

In order for the drive, but at least substantial parts of the drive are protected against contamination and / or damage, at least in the rack and the gear are in a housing.

In an advantageous embodiment, the bearing pieces part of a carriage which is displaceable on at least one, preferably two mutually parallel guides in the direction of displacement of the slide. In this case the guidance of the driver is provided on the carriage which is displaced together with the carriage, when the slider is moved to its closed or in its release position. The rack, which is engaged by the gear, is also a component which is displaced as a result of the rack drive of the carriage.

In a preferred embodiment the slide is supported between two support plates. They protect the slide so that a long service life of the slide valve is guaranteed.

The slider is advantageously supported pivotally between the two retaining plates. Due to the pivoting movement for a short adjustment paths are required to slide the tab from the release into the closed position and vice versa.

In one advantageous embodiment the slider two tension springs engage that connect it with a drive member rotatably seated on a rotatably mounted axle. The two tension springs acting in opposite directions to each other, ie depending on the pivoting direction, a tension spring is stretched and contracted and the other tension spring. The tension springs ensure that the drive element pivots the slide in the desired position, depending on the drive direction. Preferably, the drive element is an angle lever, at its both ends is connected to one end of the tension springs. The angle lever has two lever arms, at their ends in each case which is connected to one end of the tension springs. The lever arms are advantageously angularly to one another, but may also form an angle of 180 ° with one another.

The other end of the tension springs is connected to the slide. The two springs located on either side of the slider relative to its pivoting direction. Thus, the pivotal movement of the angle lever can thus be transmitted via the tension springs on the slide that it is pivoted in the desired direction.

On the slide, a retainer is mounted at least advantageous. He is thus firmly connected to the slide. At this holder the other ends of the two tension springs are connected.

Preferably, the retainer projects beyond the slider gene in both Verschwenkrichtun-. The other ends of the tension springs are connected in this case to the two ends of the holder, which are located on both sides of the slider with respect to the pivoting direction of the slider.

Since both the angle lever and the holder and the slide for pivotal movement, the two ends of the tension springs are advantageously held in bearing pieces, which are each mounted on a lying parallel to the pivot axis of the slide axis pivotable on the holder and on the angle lever. This ensures optimum power transmission is ensured by the angle lever on the slide. The bearing pieces can always adjust because of their articulated connection to the holder and the angle lever so that optimum power transmission is ensured on the slide.

The drive member is rotationally fixedly connected to the axle which in turn is non-rotatably connected with the drive. The slide is pivotable relative to the drive element. The required for pivoting the slide torque is transmitted by the tension springs from the drive element to the slider.

The holder is advantageously provided with at least one sliding block which engages a retaining plate at least in a slotted guide. The sliding guide is curved around the pivot axis of the slide. The sliding block is located in the releasing and in the closed position of the slide at the respective end of the guide linkage.

the feed line of at least one sealing ring is surrounded advantageous, which bears with an annular disc-shaped sealing part of the area on the slide. The flat annular disk-shaped sealing part takes up little installation space to complete and can be easily mounted. Thus, a proper sealing is achieved, acting on the sealing member ringscheibenförrfiigen a pressing force by which the sealing member against the slide is pressed. This compressive force is generated by the pressure difference between the pressure in the feed line and the ambient pressure. In a vacuum conveying example, the pressure in the feed line is lower than the ambient pressure. Thus, the sealing member is urged by atmospheric pressure against the slide that no ambient air can get into the delivery line.

the sealing ring is advantageously held by at least one positioning ring in its installed position. It is thereby achieved that the sealing ring does not lift off from the slider in a pressureless state.

In an advantageous embodiment of the positioning ring is made of air-permeable material, eg. B. made of foamed material, made of elastomeric material such as rubber or rubber-like materials made of EPDM, of elastomer and the like.

the positioning ring has a circular cross section is advantageous. The spool valve has two holding plates between which the slide is arranged in a preferred embodiment. The holding plates here each have a distance from the slider, so that they can not interfere with the displacement of the slide.

In a preferred embodiment, a sealing ring with an annular disc-shaped sealing part lies on both sides of the flat slider at a time. These flat sealing parts are each pressurizing force flat against the two slide sides. An optimal sealing is guaranteed.

The inventive method is characterized in that a time control is used, with which a time window is monitored, reaches within which the slide in its respective end position, and the rise in force occurs. Depending on the design of the spool valve for a predetermined time is required to move the slide from one to the other end position. This shift time is the first value. Is the end position of the slide is reached, the drive is further actuated, leading to the increase in force. It occurs at a later time, the second time value, which is after the first time value. In the control the time window with the two values ​​is monitored. As long as the slide is reliable, occurs at the time the second time value of the force increase, leading to the shutdown of the drive.

Carried the force increase earlier than the first time value, this is an indication that the slide has not been pushed into its final position, but is blocked before it reaches its end position, resulting in the increase in force. In this case, the controller generates a corresponding warning signal, so that the user knows that the slide of the control valve has not reached its respective end position.

If no power increase to within the time window for the second time value, this is an indication that the drive is faulty and the slider has not been moved. Also in this case a corresponding indication signal is generated by the user is alerted that the gate valve is not working properly.

Subject of the application arises not only from the subject of the individual claims, but also by all in the drawings and the description of the disclosed information and features. They are, even if they are not the subject of the claims are claimed as essential to the invention insofar as they individually or in combination over the prior art are new.

Further features of the invention result from the additional claims, the description and the drawings.

The invention will be explained in more detail with reference to two embodiments shown in the drawings. Show it

Fig. 1 is a plan view of an inventive slide valve,

Fig. 2 shows a section along the line AA in Fig. 1,

Fig. 3 is a view in the direction of the arrow II I in Fig. 1,

Fig. 4 is a plan view of a second embodiment of a drive for the inventive slide valve,

Fig. 5 is a section along the line AA in Fig. 4,

Fig. 6 shows a section along the line BB in Fig. 4,

Fig. 7 in view of a further embodiment of the invention

Spool valve, the spool of which occupies the closed position,

Fig. 8, the gate valve shown in FIG. 7, the slide assumes the release position, Fig. 9 shows a section along the line AA in Fig. 8.

The spool valve is used in conveyor systems having conveyor pipes, is conveyed by the conveyed material, such as plastic pellets. With the slide valve the corresponding conveying lines can be blocked or opened. But the slide valve can also be used to release the outlet of containers or to seal pressure tight around the containers.

The spool valve has a flat slide valve 1 which is located between two retaining plates 2; 3. They are each spaced apart from the slide 1 and each have an opening 4, 5, through each of which a tubular piece 6, 7 protrudes. The two pipe pieces 6, 7 are aligned with one another and have the same inner and outer diameter. Delivery lines are connected to the pipe pieces 6, 7 through which the material being conveyed, such as a plastic granulate is promoted. With the slider 1 of the inner cross section of the pipe pieces 6 can, 7 are closed, so that no more material to be conveyed can flow through the respective feed pipes. The pipe pieces 6, 7 are fixedly connected to the holding plates 2, 3, for example screwed. The slider 1 extends between the two pipe pieces 6, 7, which have with their mutually facing end sides to form in each case an annular gap small distance from the both sides of the slide. 1 Thereby, the slider 1 can be moved over the pipe pieces 6, 7 without contact.

The two retaining plates are held to one another by means of spacers 8 to the required distance. In the exemplary embodiment, four spacer 8 are provided, of which two spacers 9 in the displacement direction of the slider 1 at a distance behind one another are (Fig. 1).

The spacers 8 are identical and each have a screw 10, with which the distance between the two supporting plates 2, 3 can be adjusted. This example can Fabrikationstoleran- zen easily be compensated. The retaining plate 2 is secured by a lock nut 1 1, which sits on the screw 10. The screw 10 is surrounded over part of its length by a guide sleeve 12 which is axially secured on the screw 10 by a further locknut. 13 With its other end the guide bushing 12 rests against the the retaining plate 2 facing the inside of the holding plate. 3

The guide bushings 12 of each spacer 8 extend through a passage extending in the displacement direction 9 of the slider 1 slot 14, 15 (Fig. 1). The slider 1 has approximately rectangular outline with parallel to each other and to the direction 9 extending longitudinal sides 16, 17 and

Narrow sides 18, 19. The short side 18 is perpendicular to the longitudinal sides 16, 17 and extends straight. The opposite short side 19 has the longitudinal sides 16, 17 of mutually convergent extending edge portions 19a, 19b which merge into each other by a straight, parallel to the narrow side 18 extending short edge portion 19c. Due to this design, the slider 1 tapers at that end at which at least one connection opening 20 is located, to which a can be connected to be described, the drive for the slide. 1 The two slots 14, 15 lie only at a small distance next to the longitudinal sides 16, 17 of the slider. In the two slots 14, 15 in each case two guide bushings 12, which are spaced one behind the other in the displacement direction 9 protrude.

The outline shape of the slider 1 and the supporting plates 2, 3 described is not intended to be limiting. The slider 1 and the supporting plates 2, 3 may of course have any other suitable contour shape.

The two pipe pieces 6, 7 are each surrounded by a flat sealing ring 21, 22 which bear sealingly on the periphery of the pipe pieces 6, 7 and on both sides of the slider rest 1 (Fig. 2). The sealing rings 21, 22 seal the annular gap between the pipe pieces 6, 7 and the slider. 1 The sealing rings 21, 22 have the same outer diameter and are made for the respective application of appropriate material, for example made of silicone, polytetrafluoroethylene and the like. The sealing rings may be temperature-resistant, acid-resistant, resistant to corrosive vapors and the like. The material of the sealing rings 21, 22 is selected depending on the product to be conveyed and / or the ambient conditions of the spool valve. The sealing rings 21, 22 lie flat on the two sides of the slider 1 on over the circumference and their radial width.

Between the sealing rings 21, 22 and the holding plates 2, 3 each have a positioning ring 23, 24 is arranged. They have circular cross-section and are made of air-permeable material, such as elastomeric material, such as rubber, rubber-like material, made of EPDM, of elastomer and the like. The positioning rings 23, 24 lie on the circumference of the pipe pieces 6, 7 and ensure that the sealing rings 21, 22 does not stand out in the unpressurized state by the slider. 1

The sealing rings 21, 22 are pressed due to the pressure difference between the pressure in the feed line or the tube pieces 6, 7 and the ambient pressure against the slide. 1 If the promotion in the conveying conduit by means of vacuum or negative pressure, the sealing rings 21, 22 compressed by the pressure difference between the negative pressure in the conveying line and the ambient pressure against the outer sides of the slider 1 and at the same time, the annular gap between the pipe pieces 6, 7 and sealed the slider. 1 Due to this pressure difference a self-attraction of the sealing rings 21 is effected, 22 according to the principle of a check valve. Characterized the gaps between the pipe pieces 6, 7 and the slider 1 are sealed properly.

The slide 1 is shown in its release position in which the opening cross section of the pipe pieces 6, 7 is released by the slide. 1 It has a through hole 25 whose diameter is equal to the inner diameter of the two pipe pieces 6, 7th In the release position of the slider 1, the right in FIG. 1, spacer 8 lie with their guide bushings 12 at the right end of the slots 14 to 15 of the slider 1.

If the Durchläse through the pipe pieces 6, 7 are closed, the slider 1 is moved in the direction 9 to the right. In the closed position of the slider 1, the guide sleeves 12 are the left in Fig. 1 spacer to 8 at the left end of the slots 14, 15. The slider 1 can be moved easily. The positioning rings 23, 24 are loose on the cross-sectionally rectangular flat sealing rings 21, 22, so that the pressing force is small on the slide. 1

The holding plate 3 is located within a housing 26 which is open at both end sides and on one longitudinal side. In the area of ​​this open longitudinal side of the retaining plate 2 is located at a distance from it (Fig. 3). The housing 26 can advantageously form from a sheet inexpensively. The two longitudinal sides 27, 28 of the housing 26 each have U-shaped cross section, whereby a high strength of the casing is achieved 26th

Facing away from the plate 2 side of the housing 26 is provided with a housing over the length extending elevation 29 which defines a receiving space 30th The elevation 29 has a flat bottom 31, the two spaced parallel side walls 32, 33 to one another which delimit the receiving space 30th The side walls 32, 33 close to perpendicular to the U-shaped longitudinal sides 27, 28th

The construction of the housing 26 described and illustrated is only an example to understand. It may also have other shapes.

The holding plate 3 is located with its longitudinal sides on the inside of the legs 34, 35 of the longitudinal sides 27, 28 of the housing 26 and is fixedly connected to them, preferably screwed to them.

On the holding plate 3 side facing a driver 36 is mounted on the slider 1, the slider 20 which projects by means of a screw 37, the voltage through the Anschlussöff- is detachably connected to the slide. 1 The driver 36 has an opening 38 passing through it, through which a guide pin projects. 39 Its two ends are held in each case one angle piece 40, 41 which are attached to the side of a rack 42nd The guide pin 39 is advantageously releasably connected to the two angle pieces 40, 41 connected. He has at one end a head 43 with which the guide pin 39 abuts on the outside of the angle 40th On the other, projecting through an opening in the elbow 41 end of the guide bolt 39 is a nut 44 is screwed, through which the guide bolt is secured in position. 39

In the rack 42 a gear 45 is engaged, whose rotation axis is perpendicular to the slider 1, and the two holding plates 2; 3. The gear 45 is rotatably mounted in a bearing bracket 46 which is secured to the floor 31 of the housing 26th The gearwheel 45 is seated rotationally fixed on a shaft 47 which projects beyond the housing base 31 and can be connected to a drive shaft 48 of a drive motor 49 which is advantageously an electric motor. The drive motor 49 is perpendicular from the housing base 31 and may advantageously be releasably connected to the gear shaft 47, for example via a corresponding plug-in coupling.

By rotating the shaft 47 the rack 42 is displaced within the housing 26 in its longitudinal direction. The rack 42 is slidably supported in a guide rail 50 which extends in the displacement direction 9 of the slider 1 in the casing 26th The guide rail 50 engages, for example with angled longitudinal edges 51, 52 (Fig. 2) laterally projecting longitudinal edges of the rack 42. The formation of the guide of the rack 42 described is only by way of example to understand. The rack 42 can also be held in any other suitable way in the housing 26 displaced in its longitudinal direction.

The guide pin 39 is in the range between the driver 36 and the two angle pieces 40, 41 are each surrounded by a helical compression spring 53, 54th The two helical compression springs 53, 54 are axially biased and ensure the cam 36 in a central position between the two angle pieces 40, 41st Since they are rigidly connected to the rack 42, the guide pin 39 and the prestressed compression coil springs 53, 54 of the cam 36 is carried along. Since it is connected via the bolt 37 with the slider 1, it is displaced in the release or in the closed position depending on the rotational direction of the gear shaft 47th The respective end positions of the slide are defined by the spacer 8 and its guide bush 12, which comes in the respective end position of the slider 1 at the respective ends of the slots 14, 15 of the slider 1 to the plant. Once the slider abuts against the respective spacers 8 1, the follower 36 also remains standing as it firmly to the slide 1 is connected. The gear wheel 45 rotates further, so that the rack is moved further with the elbows 40, 41 42nd Thus, the compression coil spring 53 or 54, however, further compressed and generates a corresponding counter force. It is detected and a control of the drive motor 49 used to turn off the drive motor 49th By the stop position of the

1 slide taking place sudden increase of the spring tension increases the applied torque from the drive shaft 48, which is detected by a corresponding sensor of the control of the drive motor 49, and utilized for turning off. The increase in the power consumption of the drive motor can be used to switch off 49, as with the increase of the spring tension, the current consumption increases significantly.

The drive described for shifting the slider 1 is accommodated substantially in the area adjacent the retaining plate. 3 This makes it possible to equip spool valves retrofitted with such a drive. The housing 26 protects the rack 42, the gear 45 and the guide pin 39 with the compression springs 53, 54 and the driver 36 from damage and / or contamination.

The drive motor 49 is characterized by a structurally simple training. By detecting the increase of the spring tension in the stop position of the slider 1 by the electronics of the drive motor 49 of the drive motor is reliably switched off. Since the drive motor 49 moves the slider 1 between the release and the closing position, it is a pole-changing motor.

Instead of the rack 42 and an endlessly circulating toothed belt can be used, for example, which runs over two gear wheels. Further, a pneumatic drive can be used as a drive.

To allow the slider 1 reliable reaches its release or its closed position, a time control is provided by the interference can also be reliably detected. When the drive motor 49 is turned, then the slider 1 is moved in a particular time (first value) within a predetermined time window in its respective end position. Only when the slide 1 has reached its stop position described, the force increase occurs because the drive motor 49 after reaching the stop position of the slide continues. The increase in force occurs after a certain time (second value) within a time window, which is later than the first value. If the increase in force within the time window before the first value on, this is an indication that the slide clamps 1 and has not reached its end position. The controller generates a signal to alert the user that the slider has not reached its respective end position. In this case, the drive motor is advantageously switched off by the controller.

Another case may occur when the drive motor 49 when it is running in the following mechanism However, a defect occurs which prevents displacement of the slide. 1 This means that no force increase occurs within the time window. The controller generates a corresponding signal.

If the drive motor 49 is defective, is within the time window to determine any increase in force. Then, the controller also generates a corresponding signal. With the above-timing a simple and inexpensive especially monitoring the function of the gate valve is possible. The timing can be easily programmed by the user himself, so that he can easily adjust this control function to the intended use of the slide valve.

The gate valve according to FIGS. 4 to 6 operates basically the same as the previous embodiment. In the following only the differences from the first embodiment will be described in detail.

Instead of the guide rail 50 for the rack 42 formed as two uprights guides 55, 56 are provided which extend in the direction of displacement of the slide 9 and are fixed with their ends in bearing brackets 57, 58th They extend perpendicular to the displacement direction 9, and are so wide that in them both guides 55, 56 can be fastened. The two bearing brackets 57, 58 are fixed to the inside of the bottom 31 of the housing 26th The guides 55, 56 are spaced from the housing base 31 (Fig. 5).

On the two guides 55, 56 a carriage 59 is slidable. It has U-shaped cross-section (Fig. 5) with mutually parallel legs 60, 61 which extend in the direction perpendicular to the housing base 31 and have near their free ends each having an opening through which the guides 55 project 56th In the openings, a bearing ring 62 is advantageously used, so that the carriage can be smoothly moved on the guides 55, 56 59th The two legs 60, 61 of the carriage 59 are interconnected by a plate-shaped cross piece 63 which is preferably integrally formed with the legs 60, 61st The crosspiece 63 is located on the side facing away from the housing bottom 31 side of the guides 55, 56th

In the area between the guides 55, 56 and the transverse web 63 of the guide pin 39 is mounted on which the driver is mounted limitedly displaceable 36th The legs 60, 61 of the carriage 59 each have a through-opening 64, 65 on the on the leg 61 projecting for the guide pin 39. At the end of the guide bolt 39 is screwed, the nut 44 with which the guide bolt is secured in position axially. 39 With its head 43 of the guide pin 39 abuts on the side facing away from the leg 61 outside of the leg 60th

In the area between the two legs 60, 61 and the driver 36, the two compression springs 53, 54 are provided, as in the previous embodiment advantageously helical compression springs 39 surround the guide pin with spacing.

The driver housing 36 is formed in shape and has a threaded connection 66 (FIG. 5) over which the slide can be connected to the cam 36. 1 The threaded connection 66 is advantageously a weld nut, which is provided inside the carrier 36 in the region of a housing opening 67th The gear 45 is rotatably mounted according to the previous embodiment in the bearing bracket 46 which is releasably secured to the inside of the housing bottom 31st The gear 45 supporting shaft 47 is suitably connected to the drive motor 49th

The guide pin 39 is located at half the width of the housing 26 (Fig. 4). In the area of ​​the carrier 36 of the transverse web 63 is provided with an elongate aperture 68 which is longer in the displacement direction 9 than the driver 36. It projects through the opening 68 to the outside (Fig. And 6). The opening 68 has a rectangular-shaped outline and is so long that the driver 36 when the slider 1, as explained with reference to the previous embodiment in detail, reaches its respective end position can still be limited moved on the guide pin 39. Thus, the driver is out immaculate 36, its width corresponds approximately to the width of the opening 68 so that it is guided with its two extending in the displacement direction longitudinal sides 9 at the longitudinal edges of the opening 68th

in which engages the rack 42 (Fig. 6), the gear 45 is fixed to the carriage 59th It extends in the displacement direction 9, and is advantageously releasably connected to the carriage 59th

The compression springs 53, 54 are biased according to the previous embodiment in that the driver is held in a middle position between the two legs 60, 61 of the carriage 50 36th In addition, the bias is so large that there is no relative displacement between the compression springs 53, 54, the driver 36 and the guide pin 39 occurs according to the previous embodiment, when the slider is moved. 1 When the gear 45 is rotatably driven, the rack 42 and thus the firmly connected thereto carriage 59 along the guides 55, 56 moved in the direction of displacement. The slide fixedly connected to the cam 36 is accordingly moved to the desired end position. Once the spool 1 has reached its end position (release or closed position), the drive 49 drives the gear 45 on still further, with the result that the carriage is further shifted 59th The driver 36 can not be moved further as a result of the stop position of the slide. 1 Therefore, the compression spring is compressed 53 or 54 depending on the direction of displacement, which, in this case, the spring force results in a corresponding increase in force. As described in detail with reference to the previous embodiment, this increase in force is utilized to switch off the drive 49th

In the embodiment of FIGS. 4 to 6, the rack 42 does not require a special shape, which is attached to the carriage 59, which due to the gear mesh with the rack 42 in the desired direction on the guides 55, 56 is shifted. Since the carriage is guided on the two guides 55, 56 59, results in a large stiffness of these displacement means, so that the slider can be reliably moved in the release or in the closed position. 1

FIGS. 7 to 9 show another embodiment of a slide valve. The slide 1 a is not displaceable in this embodiment, but pivotably between the two holding plates 2a, 3a mounted. Fig. 8 shows the slide 1 a in the release position and Fig. 7 in the closed position.

The slide 1 a has approximately L-shape with a long leg 69 and a short leg 70. Near the free end of the longer leg 69 is the slide 1 a on a shaft 71 mounted extending perpendicular to the two support plates 2a, 3a and is rotatably supported in openings 72, 73 of the two holding plates 2a, 3a.

The shaft 71 has two opposite one another in alignment axis portions 71 a, 71 b that slightly protrude (Fig. 9) through the openings 72, 73. The two axle parts 71 a, 71 b sit on a (not shown) bearing axis and relative to each other on the bearing axle rotatably. The bearing axis is fastened by its ends in two holding plates 2a, 3a.

The axis portion 71b is provided with a radial annular shoulder 74 on which the holding plate 2a inner side facing the holding plate 3a and extends with a tapered outer diameter end portion 75 slightly through the opening 73 to the outside.

The axis of the part 71 a facing end of the axis portion 71b has a radially outwardly extending annular flange 76 which is advantageously integrally formed with the shaft portion 71 b. the leg 69 of the slider 1 is located on a surface at the side remote from the holding plate 2a side of the annular flange 76th The leg 69 is provided for this purpose near its free end with a corresponding aperture 77 through which the axis portion 71 b extends. The leg 69 of the slide 1 a bears against the annular flange 76 and is fixed with screws 78 on the annular flange 76th

The projecting through the opening 72 of the holding plate 2a shaft part 71 a has an annular flange 79 which is located in the region between the annular flange 76 of the axis portion 71 b and the holding plate 2a. The annular flange 79 has smaller outer diameter than the annular flange 76 and serves to plant-ge of an angle lever 80 (Fig. 8). It is non-rotatably connected to the shaft portion 71 a and serves to pivot the slide 1 a.

Between the annular flange 79 and the retaining plate 2 is a bearing ring 81 which bears against the holding plate 2a as well as on the annular flange 79th

A drive motor 82 is connected to the projecting through the opening 72 of the holding plate 2a of the axle end 71st It is provided with a reduction gear 83, which is shown only schematically in Fig. 9. It puts the high rotational speed of the drive motor in the for adjusting the slide 1 a between the release and the closing position to required speed. The axis 71 is connected via a coupling 84 to the drive motor 82nd The coupling may be formed in any known manner. The rotationally fixed connection between the drive motor 82 and the axis 71 is made by a plug axis 104 which is inserted radially from the outside through openings in the coupling 84 and the axis part 71 a.

The drive motor 82 is transversely on the holding plate 2a and is advantageously releasably connected to the slide valve. The drive motor 82 is by way of example with screws 85 on the outer side of the holding plate 2a. The drive motor 82 is surrounded by a housing 86 to which a plug socket is provided 87th

The angle lever 80 is seated rotationally firmly on the shaft portion 71 a and has two equally long arms 80 ', 80 "which lie at an obtuse angle to one another. The angle lever 80 may also be formed different from the illustrated embodiment that the two arms 80', 80" a include an angle of 180 ° with one another or lie at an acute angle to each other. ', 80 "are bearing pieces 88, 89 which are U-pieces in the exemplary embodiment, which around a lying parallel to the axis 71 axis is pivotally connected to the lever arms 80', 80" 80 at the free ends of the lever arms are connected. The bearing pieces 88, 89 are located with a leg area on the side remote from the holding plate 2a inside of the lever arms 80 ', 80 "on. Gerstücken to the laser 88, 89 is one end of two springs 90, fixed 91 formed as coil springs are.

When the bearing pieces 88, 89 formed as a U-pieces, then the tension springs 90, 91 are attached to the transverse web 92 of the bearing pieces 88, 89th In Fig. 9, only the transverse web 92 of the bearing member 88 can be seen. It extends perpendicular to the support plates 2a, 3a. The two legs 93, 94 of the bearing pieces 88, 89 are penetrated close to the free end of an axle 95, 96, with the hinged the bearing pieces 88, 89 at the free ends of the lever arms 80 ', 80 "and to the axes of the bearing pieces pivotally are.

The other ends of the tension springs 90, 91 are mounted in another bearing pieces 97, 98, which are also advantageously U-pieces. The Zugfederenden are advantageous on the transverse web of the bearing pieces 97, 98 attached in this case.

The bearing pieces 97, 98 are on both sides of the leg 69 of the slide 1 a arranged and pivotally seated on a holder 99 which is attached with distance from the axis 71 on the leg 69th The holder 99 extends transversely, preferably perpendicularly to the leg 69 and extends in both pivoting directions encryption laterally across him. The bearing pieces 97, 98 are hinged to the protruding ends of the holder 99th The joint axes are formed by pins 100, 101 which extend parallel to the axes 95, 96th

From the holder 99 is transversely from a sliding block 102, which engages with its free end in a curved slotted guide 103 in the holding plate 2a. It is designed as an arcuate slot, which lies on a circular arc around the axis of rotation of the slide 1 a leg or its 69th As is apparent from Fig. 9, the end face of the sliding block 102 includes favorably with the side remote from the holding plate 3a outside of the holding plate 2a. The sliding block 102 is advantageously a threaded sleeve. In the two end positions of the slide 1 a, which are shown in Figs. 7 and 8, the sliding block 102 is located in each case at one end of the sliding guide 103. In the release position of FIG. 8, the sliding block 102 is located at the right end and in the closed position of FIG. 7 at the left end of the slide guide 103.

The leg 69 is arcuately in the leg 70 of the slide 1 a. In the transition region between the two legs 69, 70, the passage opening 25, which frees the passage between the two pipe pieces 6, 7 in the release position of FIG. 8 is located.

The two pipe pieces 6, 7, which are firmly joined in accordance with the previous embodiments with the support plates 2a, 3a are surrounded by the flat annular disc-shaped sealing rings 21, 22 which rest on the two sides of the slide 1 a and in the described manner, the column seal between the pipe pieces 6, 7 and the slide 1 a. The sealing rings 21, 22 are formed in the manner described.

The distance between the two support plates 2a, 3a can be adjusted in the manner described in order to minimize the sealing gaps between the pipe pieces 6, 7 and the slide 1 a.

The two sealing rings 21, 22 seal against the outside of the pipe pieces 6, 7 on. The sealing rings 21, 22 may, as in the embodiment, by the two positioning rings 23, 24 are positioned so that the sealing rings 21, 22 always bear against the spool 1a. The two positioning rings 23, 24 surrounding the pipe pieces 6, 7 with distance. The two positioning rings 23, 24 are in the direction of its axis between the two holding plates 2a, 3a and the sealing ring 21, secured against shifting 22nd Thus, the external pressure on the sealing rings 21, can act 22, the positioning rings 23, 24 are advantageously made of air-permeable material, for example of foamed material. The two holding plates 2a, 3a each have an approximately rectangular outline in a plan view and lie congruently one above the other. One of the corners of the support plates 2a, 3a is rounded with a larger radius of curvature. The pipe pieces 6, 7 are located near a corner of the support plates 2a, 3a. They are so formed that the slide 1 a in its closed position (Fig. 7) projects completely between the two support plates 2a, 3a is not over them. In the release position of FIG. 8, however, the short leg 70 of the slide 1 a projects beyond the two holding plates 2a, 3a. Since the release and the closing position of the slide 1 a by the stop position of the sliding block 102 at the two ends of the link guide 103 is determined, a simple and yet accurate adjustment of the slide is ensured in the two end positions.

The short leg 70 of the slide 1 a is designed so that it enters the passage of the two pipe pieces 6, 7 is always closes and only then releases when the passage opening 25 in the area of ​​the pipe pieces 6, 7 during pivoting.

The slide 1 a is pivoted by means of the drive motor 82 in the desired direction. the slide 1 a is in the closed position of FIG. 7, the driving motor 82 is driven for pivoting the slide 1 a so that it is pivoted in the representation according to Fig. 7 in the clockwise direction about the pivot axis.

In the closed position of FIG. 7, the tension spring 91 is contracted partially, that is the distance between the opposed bearing members 89, 98 is low. The other tension spring 90 is stretched compared to the tension spring 91, since the associated bearing members 88, 97 have a greater distance from each other. The two tension springs 90, 91 serve to transmit the pivotal movement of the angle lever 80 to the slider 1 a. Is rotated clockwise with the driving motor 82 of the axis portion 71 a in the representation of FIG. 7, then the non-rotatably seated on the axle part 71 a bell crank 80 is carried along. Of the slide 1 a supporting shaft part 71 b initially remains standing until the two tension springs 90, 91 at least approximately generate the same tensile force. Only then, 91 of the slide 1 a in this case the axis part (Fig. 8) is transmitted via the tension springs 90 is pivoted and rotated 71 b about the bearing axis to the sliding block comes to the right in Fig. 7 the end of the slide guide 103 to the equipment 102. As a result, the stop action of the slide 1 a can not be pivoted further, so that the axis portion 71 b stops. However, the drive motor 82 drives the axle part 71 a still further, whereby the tension of the tension spring is increased 91st As does the tension of the tension spring 90 decreases, which is contracted. In this way, receives the torque acting on the holder 99 and the slide 1 a to. As in the previous embodiments, the increase of the torque is used to turn off the drive motor 82nd

If the slide out of the release position of FIG. 8 are pivoted back into the closed position shown in FIG. 7, the axis portion 71 a by means of the drive motor 82 is rotated in the reverse sense, so that the rotation on its sitting angle lever 80 in the representation according to Fig. 8 is pivoted counterclockwise. Again remains b are initially until the two tension springs 90, 91 produce at least approximately the same tensile force the slide 1 a supporting shaft part 71st Then, 91 of the slide 1 a, is about the two tension springs 90, pivoted accordingly, and the axle portion 71b rotated to the sliding block 102 103 comes to rest at the opposite end of the guide linkage. The slide 1 a can not be pivoted further, so that the axis remains stationary part 71 b. The axis portion 71 a is driven further to rotate by the drive motor 82nd The tension spring 90 being extended, while the tension spring is contracted 91st The caused thereby increasing the force acting on the slide 1 a torque is construed replaced by the control that turns off the drive motor 82 in the manner described.

Since the bearing pieces 88, 89, 97, 98 are each pivotally connected to the angle lever 80 and the holder are connected to 99, the pivoting movement of the angle lever 80 via the tension springs 90, reliably transmitted 91 to the holder 99 and thus to the slide 1 a is. The bearing pieces 88, 89, 97, 98 can each pivot so that optimum power transfer by the tension springs 90 is ensured 91st

The projecting beyond the housing 86 through axle 104 shows the user of the spool valve visually, in which position the slide 1 a is located.

In addition, the axle 104 may be also be used, for example, in case of failure of the drive motor 82, the slide 1 a to pivot between the release and the closing position. The axle 104 whereby the rotationally fixed connection between the clutch 84 and the axis part 71 a is released is removed. The wheel spindle 104 is inserted into the sliding block 102, preferably screwed. Then, the slide 1 a can be manually adjusted. The axis portion 71 b, thereby rotating on the bearing axis.

Since the slider 1 a, the angle lever 80, the tension springs 90, 91 and the holder 99 concealed between the two support plates 2a, 3a is located, these are accommodated protected for the adjustment of the slide 1 a provided components against damage.

The embodiment described is characterized by its simple construction and also enables cost-effective production of the slide valve.

Claims

claims
comprising 1. slide valve, in particular for use in transport systems with conveyor lines, with at least one slide (1, 1 a), the at least one passage opening (25) and with a drive (49, 82) is adjustable in a release or closed position,
characterized in that the slide (1, 1 a) through at least one driver is connected (36 80, 90, 91, 99) with the drive (49, 82), that the driver (36, 80, 90, 91, 99) in at least one adjustment direction (9) of the slider (1) is force-loaded, and that in the release and / or closing position of the slide (1, 1 a), an increase in (to the driver 36; 80, 90, 91, 99) acting force by a control of the drive (49, detected 82) and (49 for switching off the drive, 82) is used.
2. slide valve, in particular for use in transport systems with conveyor lines, with at least a slider (1, 1a) having at least one passage opening (25) and with a drive (49, 82) is adjustable in a release or closed position,
characterized in that the slide (1, 1 a) through at least one entrainment means (36; 80, 90, 91, 99) with the drive (49, 82) is connected, and that after reaching the release and / or the closed position of the slide (1, 1 a) by the drive (49, 82) generated drive torque to an increase of the recording current of the drive (49, 82) leads provided by control of the drive (49, 82) is detected and for switching off the drive ( 49, 82) is used. Gate valve according to claim 1 or 2,
characterized in that the driver (36) is displaceable along a guide (39), which is preferably a guide pin.
Gate valve according to claim 3,
characterized in that the guide pin (39) having its ends in bearing members (40, 41; 60, 61) is held.
Gate valve according to claim 4,
characterized in that the guide pin (39) in the region between the driver (36) and the bearing pieces (40, 41; 60, 61) each surrounded by at least one compression spring (53, 54).
Gate valve according to claim 5,
characterized in that the compression springs are (53, 54) biased.
Gate valve according to one of claims 4 to 6,
characterized in that the bearing pieces (40, 41; 60, 61) are fixedly connected to a rack (42) that are beneficial in the direction of displacement (9) of the slider (1) is displaceably guided.
Gate valve according to claim 7,
characterized in that engages a gear (45) in the rack (42) having its axis transverse to the direction of displacement (9) of the slider (1).
Gate valve according to claim 8,
characterized in that the gear (45) carrying the shaft (47) via a plug-in coupling with a drive shaft (48) of the drive (49) is coupled, which is advantageously substantially adjacent to the slide (1).
10. Gate valve according to one of claims 4 to 9,
characterized in that the bearing pieces (60, 61) are part of a carriage (59) (1) is at least one, preferably two mutually parallel guides (55, 56) displaceable in the displacement direction (9) of the slider.
1. 1 Gate valve according to one of claims 1 to 10,
characterized in that the slide (1, 1 a) between two supporting plates, is mounted (2, 3, 2a, 3a).
12. Gate valve according to claim 1 1,
characterized in that the slide is mounted (1 a) pivotally connected between the two holding plates (2a, 3a).
13. slide valve according to claim 1, 2, 1 1 or 12
characterized in that on the slide (1 a), two tension springs (90, 91) engage, which connect it to a driving element (80) fixed for rotation on a pivot axle (71 a) is seated.
14. Gate valve according to claim 13,
characterized in that the drive element (80) is an angle lever, at its both ends is connected to one end of the tension springs (90, 91).
15. Gate valve according to claim 13 or 14,
characterized in that the other end of the tension springs (90, 91) to the slide (1 a) is connected.
16. Gate valve according to claim 15,
characterized in that on the slider (1 a) at least one holder (99) sits, which is fixedly connected to the slide (1 a) and connected to the other end of the tension springs (90,91). Gate valve according to claim 16,
characterized in that the holder (99) the slide (1 a) excels in both Verschwenkrichtungen.
Gate valve according to one of claims 13 to 17,
characterized in that the two ends of the tension springs (90,
91) in bearing elements (88, 89, 97, 98) are held, the axis to an opening (to the pivot axis of the slide 1 a) lying parallel (95, 96,
100, 101) are pivotally mounted on the holder (99) and the angle lever (80).
Gate valve according to one of claims 13 to 18,
characterized in that the drive element (80) and the
Slide (1 a) are pivotable relative to each other.
Gate valve according to one of claims 1 to 19,
characterized in that the conveying line (6, 7) of at least one sealing ring (21, 22) is surrounded, with said conveying line (6, 7) against the slide (1, 1 a) is sealed and which has an annular disk-shaped seal member, the rests flat on the slide (1, 1 a).
Gate valve according to claim 20,
characterized in that the sealing ring (21, 22) is held by at least one positioning ring (23, 24) in its installed position.
Gate valve according to claim 21,
characterized in that the positioning ring (23, 24) has a circular cross-section.
A method for actuating a slide valve, in particular according to one of claims 1 to 22,
characterized in that a time window is monitored by a time control, within which the slider (1, 1 a) passes at a first time value in its release or to its closed position, and occurring in a subsequent second value of the force increase. A method according to claim 23,
characterized in that in a vo occurring within the time window the first time value force increase an indication signal is generated.
25. The method of claim 23 or 24,
characterized in that, with a lack of increase in force until the second time value indicative signal is generated.
PCT/EP2015/000240 2014-02-07 2015-02-06 Slide valve, in particular for use in conveying systems with conveying lines, and method for actuating a slide valve of this type WO2015117762A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE201410001725 DE102014001725A1 (en) 2014-02-07 2014-02-07 Slide valve, in particular for use in transport systems with conveyor lines, and methods for operating such a gate valve
DE102014001725.7 2014-02-07

Publications (1)

Publication Number Publication Date
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US4542649A (en) * 1983-07-19 1985-09-24 Charbonneau And Godfrey Associates Motor operated valve analysis and testing system
EP0287299A2 (en) * 1987-04-13 1988-10-19 Electric Power Research Institute, Inc Microprocessor-based control and diagnostic system for motor operated valves
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