DE102019121817A1 - Segment plate valve - Google Patents

Abstract

A rotary valve (1), in particular a rotary disk valve, has a valve housing (2), a sealing body (4) which is arranged non-rotatably in the valve housing (2) and has at least one flow opening (3), and a sealing body (4) rotatable about an axis of rotation (5) in the valve housing (2) mounted closure body (7) having at least one control opening (6). The closure body (7) is between a flow position (I) in which the at least one flow opening (3) and the at least one control opening (6) at least partially overlap one another and a closed position (II) in which the at least one flow opening (3) and the at least one control opening (6) are offset from one another, adjustable. The rotary valve (1) also has a closing element (8) which is rotatably arranged on the valve housing (2) and which is connected to the closing body (7) for adjusting the closing body (7). The closing element (8) and the closing body (7) are connected to one another by a link control (9).

Description

The present invention relates to a rotary valve, in particular a rotary disk valve, with a valve housing, with a sealing body arranged in the valve housing in a rotationally fixed manner and having at least one flow opening, in particular a sealing disk, and with a closure body rotatably mounted in the valve housing about an axis of rotation and having at least one control opening, in particular a closure disc. The closure body is adjustable between a flow position in which the at least one flow opening and the at least one control opening at least partially overlap and a closed position in which the at least one flow opening and the at least one control opening are offset from one another. The rotary valve furthermore has a closing element which is arranged on the valve housing so as to be rotatable about a drive axis and which is connected to the closing body for adjusting the closing body.

From the DE 10 2012 106 954 A1 such a rotary valve in the form of a segment plate valve is known. In a manner known per se, the segment plate valve has a valve housing in which a fixed disk is arranged in a rotationally fixed manner. A loose disk rotatably mounted in the valve housing rests against the fixed disk. The fixed disk and the loose disk have flow openings that correspond to one another. The loose disk can be adjusted between an open position, in which the flow openings of the two disks adjoin one another, and a closed position, in which the flow openings of the two disks are offset from one another. To adjust the loose disk, an adjusting device with a drive pinion is provided on the valve housing, which works together with a toothed ring arranged on the loose disk.

From the U.S. 1,738,135 A a rotary valve with two mutually adjustable discs is also known. To adjust the loose disk, an adjusting device with a spindle is attached to the valve housing, which actuates a lever attached to the loose disk.

The object of the present invention is to propose a rotary valve with an improved adjusting device.

The object is achieved by a rotary valve with the features of independent claim 1.

A rotary valve has a valve housing, a sealing body which is arranged non-rotatably in the valve housing and has at least one flow opening, and a closure body which is rotatably mounted about an axis of rotation in the valve housing and has at least one control opening. The closure body is adjustable between a flow position in which the at least one flow opening and the at least one control opening at least partially overlap, and a closed position in which the at least one flow opening and the at least one control opening are offset from one another. The rotary valve furthermore has a closing element which is arranged on the valve housing so as to be rotatable about a drive axis and which is connected to the closing body for adjusting the closing body.

It is provided that the closing element and the closing body are connected to one another by a link control. The gate control includes a gate, for example a groove or a slot, and a cam guided therein. The manufacture of the rotary valve is thereby considerably simplified, since the link control, in contrast to a gear drive or a spindle drive, can be manufactured very simply and inexpensively. In addition, the gate control only requires very little space, so that the rotary valve can also be used in confined spaces. In addition, the gate control allows the shape of the gate to provide a wide variety of functions, such as quick opening or closing or locking positions for certain valve positions.

The rotary valve is designed in particular as a rotary disk valve, in which the sealing body is then designed as a sealing disk or fixed disk and the closure body is designed as a closing disk or loose disk.

As an alternative to a sealing disk and a sealing disk, however, the sealing body and the sealing body can also be designed, for example, cylindrical or conical. For example, the sealing body can be designed as a stationary hollow cylinder or hollow cone in which a cylinder or cone is rotatably arranged as a closure body.

According to one embodiment of the rotary valve, the sealing body can also be formed in one piece with the valve housing.

It is advantageous if the link control has a non-linear transfer function. This also enables a non-linear torque transmission between the closing element and the closing body. The actuating force for adjusting the closure body can hereby also be different on an adjustment path between the flow position and the closed position. So For example, a particularly high actuating force can be provided for adjusting the closure body from the closed position in order to avoid unintentional opening of the rotary valve. A non-linear transmission of the angle of rotation is also possible as a result. For example, close to the flow position or close to the closed position, a higher transmission ratio can be implemented than in the areas in between, in order to realize rapid opening or closing of the rotary valve. Likewise, a lower transmission ratio can be provided in the areas between the closed position and the flow position, in order to be able to fine-tune a certain valve opening degree, for example.

According to a further development of the invention, it is advantageous if the closing element has a cam which is guided in a link of the closing body. It is particularly advantageous if the cam is arranged directly on the rotatable closing element and the link is introduced directly into the closing body. The manufacture of the rotary valve is thereby considerably simplified. In addition, the rotary valve or its adjusting device is robust and requires little maintenance due to the few moving parts. According to an alternative embodiment, depending on the design of the gate, it is also conceivable that the closure body has the cam and the gate is arranged on the closing element.

It is also advantageous if the cam is arranged eccentrically to the drive axis of the closing member. The cam can be arranged, for example, on an end face of a cylindrical closing member. According to an alternative embodiment, however, it is of course also conceivable that the cam is provided on a circumferential surface of a cylindrical closing element and, for example, engages in a link in an end surface of a closing disk.

It is also advantageous if the drive axis of the closing member extends perpendicular to the axis of rotation of the closing body. The rotary valve can hereby be designed to be particularly space-saving and the adjusting device, here the link control, can hereby be arranged spatially separated from the flow openings and control openings. Influencing the flow conditions by the adjustment device is hereby excluded. The sealing of the valve housing is also facilitated due to this spatially separated arrangement.

According to a further development of the invention, it is also advantageous if the link is arranged on a circumferential surface of the closure body. This also contributes to the fact that the adjusting device or the link control can be arranged spatially separated from the flow channels formed by the flow openings and the control openings.

According to a further advantageous embodiment of the rotary valve, the closure body and the sealing body are arranged centrally with respect to one another in the valve housing. The closure body and the sealing body thus have a common central longitudinal axis or, in other words, the axis of rotation of the closure body coincides with the geometric axis of the sealing body. The geometric axis of the sealing body is, for example, the cylinder axis in the case of a cylindrical sealing body. It is advantageously possible to mount the closure body directly in the sealing body. In particular, when there is only a single flow opening or control opening, it is of course also conceivable that the axis of rotation of the closure body deviates from the geometric axis of the sealing body.

In addition, it is advantageous in the rotary valve if a flow direction of the rotary valve runs parallel to the axis of rotation of the closure body. In other words, the flow openings and the control openings form flow channels which run parallel to the axis of rotation of the closure body. This can be implemented, for example, in that the closure body is designed as a closure disk and the sealing body as a sealing disk and the flow opening (s) or the control opening (s) are arranged in the end face thereof. Depending on the design of the rotary valve, however, a flow direction perpendicular to the axis of rotation of the closure body is also possible.

It is also advantageous if the cam is designed as an insert in the closing member. As a result, the cam can be made from a particularly wear-resistant material. In addition, the insert can easily be replaced in the event of wear. Likewise, the link can also be provided as an insert in the closure body.

The cam and the link are preferably made of a wear-resistant material. Materials with hardened surfaces or possibly ceramic materials are also conceivable.

It is also advantageous if the sealing body has several flow openings, preferably evenly distributed in its circumferential direction, and / or if the closure body has several control openings, preferably evenly distributed in its circumferential direction. This means that large flows can also be achieved.

The closure body rests on the sealing body. It is therefore advantageous if a seal and / or a spacer and / or a sliding washer is arranged between the closure body and the sealing body. A seal makes it possible to seal the valve almost completely and to prevent the fluid from escaping from the flow channels formed by the flow openings and the control openings. With a spacer, for example, the rotatability of the closure body with respect to the sealing body can be improved, since it no longer touches the sealing body. The same can also be achieved with a sliding washer. However, an adaptation to different geometrical relationships can also be achieved with a spacer. As an alternative to this, however, it is also possible for the closure body to lie directly against the sealing body.

Furthermore, it is advantageous if the closure body and / or the sealing body have one or more coatings. This also makes it possible, in particular if the closure body rests directly on the sealing body, to improve the rotatability of the closure body. Furthermore, one or more coatings can be used to improve the resistance to mechanical stresses and / or aggressive fluids.

• 1 eine Seitenansicht eines Drehventils in Form eines Drehscheibenventils in einer Schließstellung,
• 2 eine Seitenansicht eines Drehventils in Form eines Drehscheibenventils in einer Durchflussstellung,
• 3 eine Detailansicht einer Kulisse zur Verstellung eines Verschlusskörpers eines Drehventils,
• 4 eine weitere Ausführung einer Kulisse zur Verstellung eines Verschlusskörpers eines Drehventils,
• 5 eine weitere alternative Ausführung einer Kulisse zur Verstellung eines Verschlusskörpers eines Drehventils, sowie
• 6 eine Seitenansicht eines Drehventils in einer alternativen Ausführung.

Further advantages of the invention are described in the following exemplary embodiments. Show it:

• 1 a side view of a rotary valve in the form of a rotary disk valve in a closed position,
• 2 a side view of a rotary valve in the form of a rotary disk valve in a flow position,
• 3 a detailed view of a backdrop for adjusting a closure body of a rotary valve,
• 4th another embodiment of a gate for adjusting a closing body of a rotary valve,
• 5 a further alternative embodiment of a gate for adjusting a closure body of a rotary valve, and
• 6th a side view of a rotary valve in an alternative embodiment.

In the following description of the exemplary embodiments, features that are identical or are at least comparable in their design and / or mode of operation are provided with the same reference symbols. Furthermore, these are only explained in detail when they are mentioned for the first time, while in the following exemplary embodiments only the differences from the exemplary embodiments already described are discussed. Furthermore, for reasons of clarity of several identical components or features, often only one or only a few are labeled.

1 shows a side view of a rotary valve 1 in a closed position II . The rotary valve 1 has a valve housing 2 on, which in the present case is round or hollow-cylindrical and designed as a rotary disk valve. Rotatable with the rotary valve 1 connected is a sealing body designed as a sealing disk 4th , which in the present case has several flow openings 3 having. In the present example, these are the flow openings 3 circular segment-shaped and uniformly over a circumference of the sealing body 4th distributed. Furthermore is in the valve housing 2 a closure body 7th , in this case a locking disc, around an axis of rotation 5 rotatably mounted. The closure body 7th also has several control openings in the present case 6th on, which is also formed in the shape of a segment of a circle and evenly over the circumference of the closure body 7th are distributed. The closure body 7th lies on the sealing body 4th on. The closure body 7th can be done directly on the sealing body 4th rest or indirectly with one between the closure body 7th and the sealing body 4th arranged further element.

In the present illustration, the closure body is 7th in front of the sealing body 4th arranged so that this of the closure body 7th is covered. The closure body 7th is therefore shown broken away in a partial area. The sealing body located behind is in this broken-out section 4th as well as part of a flow opening 3 recognizable.

The closure body 7th is present in a closed position II in which the control openings 6th of the closure body 7th offset in the circumferential direction to the flow openings 3 of the sealing body 4th are arranged. Accordingly, only the control openings are in the present illustration 6th of the closure body lying at the front with reference to the plane of the drawing 7th visible, while the flow openings behind with reference to the plane of the drawing 3 of the sealing body 4th shown as hidden lines. From the closed position shown here II can the closure body 7th around the axis of rotation 5 are rotated and thereby in a flow position I. (please refer 2 ) to be brought. The closure body 7th can directly on the sealing body 4th and slide on it. The closure body 7th then lies directly on the sealing body 4th on. But it is also possible to have a sliding washer or a spacer between the sealing body 4th and the closure body 7th to be provided.

2 shows the rotary valve 1 of the 1 in a flow position I. in which the control openings 6th of the closure body 7th to the flow openings 3 of the fixed sealing body 4th align or at least partially overlap one another. The flow openings 3 and the control openings 6th thereby form flow channels in the rotary valve 1 out. In the present example, the flow channels run parallel to the axis of rotation 5 of the rotary valve 1 .

To the breech body 7th from the closed position II into the flow position I. and to adjust it back is still a locking device 8th provided that operates an adjusting device. The closing device 8th is around a drive axis 12 rotatable on the valve housing 2 arranged. The adjustment device is used as a gate control 9 executed and connects the closure body 7th and the closing device 8th . The closing device 8th is presently designed as a simple cylindrical rotating body and directly in a receptacle 15th of the valve body 2 stored. It can be rotated by a drive and thus the gate control 9 actuate. The drive is preferably designed as an electric or pneumatic drive. In principle, however, it would also be conceivable to provide a hydraulic drive or the closing element 8th operated by hand.

The backdrop control 9 includes a backdrop 11 as well as a cam 10 which in the backdrop 11 is led. In the present example, the cam is 10 directly on the closing element 8th and on one end face 14th the same arranged. The scenery 11 is also in an advantageous manner directly in a peripheral surface 13 (see 3 - 5 ) of the closure body 7th provided and in the present case as a groove in the circumferential surface 13 executed. The backdrop control 9 makes it possible in an advantageous manner by means of a rotary movement of the closing member 8th a rotational movement of the closure body 7th to effect. Furthermore, through the design of the backdrop 11 the opening and closing of the rotary valve can be influenced in various ways, as based on the 3-5 will be explained later.

It goes with reference to the 1 and 2 that the execution of the closure body 7th and the sealing body 4th is to be understood as a closure disk or sealing disk only as an example. Other forms of a closure body and a sealing body are also possible, such as the 6th removable. The same applies to the shape, number and arrangement of the flow openings 3 as well as the control openings 6th only exemplary. It is also conceivable to have only a single flow opening 3 and a single control opening 6th to be provided. It is also possible for a single control opening 6th with multiple flow openings 3 cooperates so that the rotary valve 1 the medium flowing through it can also be distributed to different connections, for example. Furthermore, the closure body must also 7th and the sealing body 4th not necessarily the same size and shape. Finally, designs are also conceivable in which the through the at least one flow opening 3 and the at least one control port 6th flow channel formed not parallel, but for example perpendicular or also obliquely to the axis of rotation 5 of the closure body 7th runs. The same applies to the shape and design of the closing element 8th numerous designs possible. For example, the cam 10 also in a peripheral surface 13 of the closing organ 8th be provided or the closing member 8th may have a different shape.

3 shows a detailed view of a backdrop 11 for adjusting a closure body 7th a rotary valve 1 . The scenery 11 is also present on a peripheral surface 13 of the closure body 7th arranged, which is only shown broken off. The side faces can still be seen 14th of the closure body 7th . For clarity there is still one in the backdrop 11 guided cam 10 shown. The scenery 11 presently has several functional areas, namely a closing area 16 and an opening area 17th that are close to the lateral end faces 14th of the closure body 7th are arranged, as well as an adjustment range 18th , which is present between the closing area 16 and the opening area 17th is arranged. The opening area 17th and the closing area 16 have a significantly flatter slope than the adjustment range 18th or even extend perpendicular to the end faces 14th . This enables the rotary valve to be opened and closed very quickly 1 can be achieved while in the adjustment range 18th depending on the slope of the backdrop 11 in the adjustment range 18th a fine adjustment of the opening degree of the rotary valve 1 can be done. Of course, the opening area could differ from the illustration shown 17th and / or the closing area 16 can also be carried out with a very small slope in order to allow the rotary valve to open and close slowly 1 to achieve.

According to the representation of the 4th however, are close to the two end faces 14th Rest areas 19th provided, which are characterized by a very high slope or even parallel to the end faces 14th extend. Unintentional opening or closing of the rotary valve 1 by slightly twisting the closing element 8th can thereby be avoided.

It is not absolutely necessary to have the backdrop 11 like in the 3 and 4th shown to be point-symmetrical or symmetrical. Likewise, the backdrop 11 towards the two shelves 14th also be executed differently. This is in 5 shown. The backdrop shown there 11 points next to the adjustment range 18th just a closing area 16 on, which is designed for quick closing.

It goes without saying that such areas can also be used several times in one setting 11 can be arranged in combination. For example, both rest areas 19th as well as opening and / or closing areas 16 , 17th as well as one or more adjustment ranges 18th are provided. It is also not necessary that the adjustment range 18th over its entire length or, in the present case, over the entire width of the circumferential surface 13 of the closure body 7th has a uniform slope. Rather, the backdrop can 11 can be designed in any way in order to achieve the opening, closing or setting of a certain degree of opening in the desired manner.

6th finally shows a side view of a rotary valve 1 in an alternative version. In contrast to the execution of the 1 and 2 is the present rotary valve 1 not designed as a rotary disk valve, but has a hollow cylindrical sealing body 4th on, in which a likewise hollow cylindrical closure body 7th is rotatably mounted. The flow openings 3 of the fixed sealing body 4th are in a circumferential area 13 of the sealing body 4th arranged. Likewise are those to the flow openings 3 corresponding control openings 6th in the peripheral surface 13 of the closure body 7th intended. The outer sealing body 4th is shown here broken off to include the internal closure body 7th to be able to represent at least partially visible. Also the valve body 2 can only be seen in a broken representation. The closing device 8th is just like in the 1 and 2 designed as a cylindrical rotating body and has a cam 10 on. The scenery 11 in which the cam 10 is guided, is present in the end face 14th of the closure body 7th intended.

It is understood that also with respect to the 1 numerous modifications with regard to the shape and design of the locking member 8th as well as the arrangement and form of the backdrop control 9 possible are. The closure body could also 7th not inside the sealing body 4th be arranged, but surround it from the outside. The sealing body could also 4th as well as the closure body 7th also have a hollow cone shape or cone shape.

The present invention is not restricted to the illustrated and described exemplary embodiments. Modifications within the scope of the patent claims are just as possible as a combination of the features, even if these are shown and described in different exemplary embodiments.

List of reference symbols

1

Rotary valve

2

Valve body

3

Flow opening

4th

Sealing body

5

Axis of rotation

6

Tax opening

7th

Locking body

8th

Closing device

9

Scenery control

10

Cam

11

Backdrop

12th

Drive axle

13

Peripheral surface

14th

Face

15th

admission

16

Closing area

17th

Opening range

18th

Adjustment range

19th

Rest area

I.

Flow position

II

Closed position

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102012106954 A1 [0002]
• US 1738135 A [0003]

Claims (12)

Rotary valve (1), in particular a rotary disk valve, with a valve housing (2), with a sealing body (4), in particular a sealing disk, which is arranged non-rotatably in the valve housing (2) and has at least one throughflow opening (3), with a sealing body (4) around an axis of rotation (5) The closure body (7), in particular a closure disk, rotatably mounted in the valve housing (2) and having at least one control opening (6), the closure body (7) between a flow position (I) in which the at least one flow opening (3) and the at least a control opening (6) at least partially overlap one another, and a closed position (II), in which the at least one flow opening (3) and the at least one control opening (6) are offset from one another, can be adjusted, and with a drive axis (12) Closing member (8) which is rotatably arranged on the valve housing (2) and which is connected to the closing body (7) for adjusting the closing body (7), thereby characterized in that the closing element (8) and the closing body (7) are connected to one another by a link control (9). Rotary valve (1) according to the preceding claim, characterized in that the link control (9) has a non-linear transfer function. Rotary valve (1) according to one of the preceding claims, characterized in that the closing element (8) has a cam (10) which is guided in a link (11) of the closing body (7), or that the closing body (7) has a cam (10), which is guided in a link (11) of the closing member (8). Rotary valve (1) according to one of the preceding claims, characterized in that the cam (10) is arranged eccentrically to the drive axis of the closing member (8). Rotary valve (1) according to one of the preceding claims, characterized in that the drive axis (12) of the closing member (8) extends perpendicular to the axis of rotation (5) of the closing body (7). Rotary valve (1) according to one of the preceding claims, characterized in that the link (11) is arranged on a peripheral surface (13) of the closure body (7). Rotary valve (1) according to one of the preceding claims, characterized in that the closure body (7) and the sealing body (4) are arranged centrally to one another in the valve housing (2). Rotary valve (1) according to one of the preceding claims, characterized in that a flow direction of the rotary valve (1) runs parallel to the axis of rotation (5) of the closure body (7). Rotary valve (1) according to one of the preceding claims, characterized in that the cam (10) is designed as an insert in the closing element (8) and / or that the link is designed as an insert in the closing body (7). Rotary valve (1) according to one of the preceding claims, characterized in that the sealing body (4) has several, preferably evenly distributed in its circumferential direction, throughflow openings (3) and / or that the closure body (7) has several, preferably evenly distributed in its circumferential direction , Has control openings (6). Rotary valve (1) according to one of the preceding claims, characterized in that a seal and / or a spacer and / or a sliding washer is arranged between the closure body (7) and the sealing body (4). Rotary valve (1) according to one of the preceding claims, characterized in that the closure body (7) and / or the sealing body (4) have one or more coatings.

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