Valve and overflow element

Abstract

The utility model relates to a valve and a spill element. The valve is for regulating the flow of a fluid between an inlet chamber and an outlet chamber. The valve has a valve body which is movable by a slide between a closed position and an open position, the valve body for preventing flow in the closed position and allowing flow in the open position, the slide extending from the interior of the valve through an opening to the exterior of the valve so as to be actuatable therefrom. The valve further has a bellows chamber for accommodating a bellows for sealing between the slide and the opening, a fluid connection being established between the bellows chamber and the outlet chamber to allow a compensating flow to flow into and out of the bellows chamber as a result of a volume change in the bellows chamber due to actuation of the slide. This fluid connection is established by a spill element. The geometry of the valve is configured such that particles which are prevented from entering the bellows chamber by the compensating flow do not directly impact on the bellows.

Description

Technical Field

[0001] This invention relates to a valve for regulating fluid flow between an inlet chamber and an outlet chamber. Furthermore, this invention relates to an element that is a component of this valve. Background Technology

[0002] In the prior art, valves are known. Such valves typically have an inlet chamber and an outlet chamber, as well as a movable element, such as a valve body, which changes the flow rate through the valve, i.e., the flow rate from the inlet chamber to the outlet chamber.

[0003] For example in Figure 5a and Figure 5b The diagram illustrates a prior art valve 1*. This prior art valve 1* has a sliding member 7 for actuating a valve body 4. The sliding member 7 is guided by a bushing-type guide and an overflow element 6. The bushing has an opening to establish a fluid connection between an outlet chamber 3 and a bellows chamber 5. The sliding member 7 is surrounded by a bellows 8 within the bellows chamber 5 to seal the bellows chamber 5 relative to the environment. The opening in the bushing for establishing the fluid connection between the outlet chamber 3 and the bellows chamber 5 is designed to compensate for volume changes within the bellows chamber 5 when the sliding member 7 is actuated. If relative to... Figure 5a or Figure 5b In the view shown, when the slider 7 moves downward, the bellows 8 expands and displaces a larger volume of gas within the bellows chamber 5. In this case, gas flows from the bellows chamber 5 into the outlet chamber 3 through an opening within the bushing. If relative to... Figure 5a or Figure 5b In the view shown, when the slider 7 moves upward, the bellows 8 contracts and displaces a smaller volume of gas within the bellows chamber 5. In this case, gas flows from the outlet chamber 3 into the bellows chamber 5 through an opening in the bushing.

[0004] Based on the structure of existing technologies, especially as Figure 5a and Figure 5b The structure shown has the following disadvantages.

[0005] exist Figure 5a A streamline a is shown. This streamline a represents the trajectory of a particle that originates in inlet chamber 2, passes through the open valve body 4, and moves into outlet chamber 3. Due to the particle's ballistic trajectory, the particle passes through the opening within the bushing (guide and overflow element 6) into bellows chamber 5 and impacts the surface of bellows 8. This can potentially ignite bellows 8 and / or the particle, especially in an oxygen-rich atmosphere. Unrelatedly, mechanical wear occurs on bellows 8.

[0006] exist Figure 5bA streamline b is shown. This streamline b represents the flow of gas that occurs when valve body 4 is open. When valve body 4 is open, a flow of gas typically flows from inlet chamber 2 into outlet chamber 3. Due to the vertical component of the flow (relative to...) Figure 5b (As shown in the diagram), a portion of the flow passes through the opening in the bushing (guide and overflow element 6) into the bellows chamber 5 (through the opening shown on the left), and then flows along streamline b through the bushing again (through the opening shown on the right) into the outlet chamber 3.

[0007] exist Figure 5b The diagram shows region M, where the flow direction changes along streamline b, and pressure is applied to bellows 8 (in...). Figure 5b (From left to right in the diagram). As a result, the material of the bellows 8 is subjected to stress, particularly a welded connection that fixes the bellows 8 to the sliding member 7 (in the lower region of the bellows 8, relative to...). Figure 5b (Illustration).

[0008] In addition, Figure 5b The diagram shows a region T in which the flow along streamline b flows back into outlet chamber 3. At this point, this flow encounters the "mainstream" of fluid flowing from inlet chamber 2 into outlet chamber 3. This convergence of flows creates a turbulent region or eddies, which degrades the performance (flow coefficient) of the prior art valve 1*.

[0009] Normally, any fluid flow between the inlet chamber 2 and the bellows chamber 5 is undesirable if there is no volume change within the bellows chamber 5 due to the movement of the slider 7. Through such flow, undesirable conditions, such as high temperature, present in the inlet chamber 2, are transmitted to the bellows chamber 5, thereby acting on the sensitive bellows 8. Utility Model Content

[0010] To solve the above problems, a valve and a component are provided.

[0011] A valve is disclosed for regulating fluid flow between an inlet chamber and an outlet chamber, having a valve body movable between a closed position and an open position by a sliding member, wherein the valve body is used to prevent flow in the closed position and allow flow in the open position, wherein the sliding member extends from the interior of the valve through an opening to the exterior of the valve so that it can be actuated therefrom, a bellows chamber for accommodating a bellows for sealing between the sliding member and the opening, wherein a fluid connection is established between the bellows chamber and the outlet chamber to allow compensating flow into and out of the bellows chamber due to volume changes occurring within the bellows chamber due to the actuation of the sliding member, wherein the fluid connection is established by an overflow element.

[0012] According to this invention, the geometry of the valve is configured such that particles entering the bellows chamber through the compensating flow are prevented from directly impacting the bellows.

[0013] This prevents particles moving from the inlet chamber, through the open valve body, and into the outlet chamber from entering the bellows chamber due to their ballistic trajectory and impacting the bellows. Particles are either prevented from entering the bellows chamber by the valve geometry, or they are slowed down, thus reducing their kinetic energy. This prevents the ignition of particles and / or the bellows, especially in oxygen-rich atmospheres. Furthermore, it reduces mechanical wear on the bellows caused by particle impacts.

[0014] Furthermore, through the features of this invention, fluid flow between the outlet chamber and the bellows chamber is prevented or at least reduced when no volume change occurs in the bellows chamber due to the movement of the sliding member.

[0015] This reduces eddies in the outlet chamber (where the flow from the bellows chamber into the outlet chamber may meet the "mainstream" flow from the inlet chamber into the outlet chamber), thereby improving valve performance (flow coefficient).

[0016] Furthermore, undesirable effects (such as high temperatures) in the inlet and / or outlet chambers will not, or at least be delayed, be transmitted to the bellows chamber, and thus to the sensitive bellows.

[0017] In addition, it prevents or at least reduces fluid flow that acts on the bellows within the bellows chamber and applies torque and / or (bending) torque to it, thereby causing mechanical load on the bellows.

[0018] In addition, a valve is disclosed in which the geometry for preventing particles from directly impacting the bellows is achieved by at least one deflection within the overflow element, and / or by a transition zone between the overflow element and the bellows chamber being arranged non-aligned with the bellows.

[0019] In addition, a valve is disclosed in which the deflection is formed by an overflow element within a component that guides the slider.

[0020] The overflow element can be manufactured economically and simply thanks to the features mentioned last. Furthermore, a valve employing a modular principle can be provided, in which the element can be arbitrarily adapted and replaced according to the individual requirements of the valve.

[0021] In addition, a valve is disclosed in which the misalignment of the transition zone is achieved by an overflow element disposed outside the guide element for guiding the slider.

[0022] Therefore, another embodiment of this utility model is provided.

[0023] Furthermore, a valve is disclosed in which an overflow element is formed through at least one channel, particularly through one or more channels, wherein the geometry for preventing direct particle impact on the bellows is achieved by deflection within at least one, particularly substantially linearly extending channel, wherein the overflow element forms a step for achieving deflection, the step extending partially into the cross-sectional area of ​​the channel, wherein the step is adjacent to the bellows chamber. Advantageously, despite the deflection achieved by the step, the overflow element can still be manufactured with advantageous simplicity, particularly requiring only one borehole for each channel. More complex manufacturing methods can be advantageously omitted. This results in an advantageous and economical construction. Furthermore, an advantageous and rapid manufacturing method can be achieved. Preferably, the step extends obliquely, preferably substantially perpendicularly, relative to the longitudinal extension direction of the slider, bellows chamber, or bellows. Preferably, the step extends obliquely, preferably substantially perpendicularly, relative to the longitudinal extension direction of the channel adjacent to the step from the outlet chamber. Preferably, the step extends into at least a large portion of the cross-sectional area of ​​the channel. In particular, the cross-sectional area of ​​the channel extends perpendicular to the longitudinal extension direction of the respective channel. Preferably, the step is directly adjacent to the inner surface defining the bellows chamber. In particular, the channel transitions into the bellows chamber at the step. It is conceivable that the overflow element is formed through multiple channels, wherein preferably, the overflow element forms a step on each channel to achieve diversion. Alternatively, it is conceivable that the channels at least partially converge in a few channels, wherein the converging channels / channels particularly define a step respectively.

[0024] Furthermore, a valve is disclosed in which an overflow element is formed within a retaining element that defines a bellows chamber of the valve, the retaining element at least partially surrounding the bellows. The guide element typically bears high loads during valve operation and can also be configured to be relatively compact. By constructing the overflow element within the retaining element, the guide element can be advantageously manufactured simply and economically, and therefore replacement of the guide element is also economical. Furthermore, deformations, etc., caused by manufacturing the overflow element are far less critical on the retaining element than on the guide element, which contributes to the smooth movement of the sliding element. Preferably, the retaining element is used to retain the guide element. Preferably, the guide element is arranged on the retaining element in a form-fitting and / or force-fitting manner. It is conceivable that the retaining element is constructed as part of the valve cover or as a separate component of the valve, for example, as an insert for placement on the cover.

[0025] Furthermore, a valve is disclosed comprising a housing that at least primarily forms an inlet chamber and an outlet chamber, the housing including at least one cover, wherein the cover includes an opening for a sliding element, wherein the geometry for preventing direct particle impact on the bellows is achieved by at least one deflection within an overflow element, wherein the overflow element is formed within the cover, and wherein the cover with the overflow element extends into the outlet chamber and at least primarily surrounds the bellows. The overflow element can be constructed independently of other components of the valve, wherein, in particular, the selection / geometry of the guide and / or support for the sliding element can advantageously be independent of the overflow element. In particular, the cover forms the bellows chamber together with the guide element. Preferably, the overflow element, configured as at least one channel, extends through the inner wall of the cover defining the outlet chamber and the bellows chamber. In particular, the guide element is held on the cover in a force-fit and / or form-fit manner, particularly directly or through an insert, or integrally formed with the cover.

[0026] Furthermore, a valve is disclosed in which an overflow element is formed through at least one channel extending substantially in a straight line from an outlet chamber to the inner wall defining a bellows chamber. This allows for advantageously simple and economical manufacturing of the overflow element, for example, by drilling a single hole for each channel. Alternatively, it is conceivable that the channels be constructed in sections or entirely as curved and / or bent.

[0027] Furthermore, a valve is disclosed comprising a guide element for guiding a sliding member and an insert for retaining the guide element, wherein an overflow element is formed through at least one channel extending through the insert into a bellows chamber, wherein the insert fully defines the inlet and outlet openings of the channel, wherein the channel is segmentally defined by the inner surface of the insert and the outer wall of the guide element. An advantageous modular construction of the valve can be achieved, which is advantageously formed independently of the construction of the guide element. The insert can be manufactured economically and can be easily replaced when the overflow element needs to be changed or removed. The cap or retaining element and the guide element can advantageously be used consistently in different valve configurations (with or without an overflow element). Thus, an advantageous, economical, and functionally rich modular system can be achieved for the valve. An advantageously compact construction of the insert can be achieved because the wall thickness of the insert defines the channel only on one side. Thus, the geometry of the overflow element and / or the valve components surrounding the insert can be advantageously and flexibly constructed in a variety of advantageous sizes. Preferably, the outer wall of the guide element is formed on the outer side of the guide element opposite to the sliding member. Preferably, the outer wall of the guide element is substantially cylindrical. In particular, the outer wall of the guide element has substantially no groove in the area defining the channel. Preferably, the channel is completely defined by the insert in the areas of the inlet opening and the outlet opening, particularly in the intermediate region, especially between the inlet and outlet openings, by the inner surface of the insert and the outer wall of the guide element. Preferably, the inlet and outlet openings each have a central axis. Preferably, the channel extends substantially parallel to the central axis of the inlet opening in the area of ​​the inlet opening. Preferably, the channel extends substantially parallel to the central axis of the outlet opening in the area of ​​the outlet opening. Particularly preferably, the channel extends obliquely and / or substantially perpendicularly in the intermediate region relative to the central axis of the inlet opening and / or relative to the central axis of the outlet opening. In particular, the channel is configured to bend or curve from the inlet opening to the intermediate region. In particular, the channel is configured to bend or curve from the intermediate region to the outlet opening. Preferably, the channel is configured to be curved in the intermediate region. Preferably, the insert forms a groove for receiving the guide element. Particularly preferably, the inner surface of the insert defining the channel is adjacent to the inner wall of the insert defining the groove. Preferably, the insert is configured such that the channel extends at least partially around the central axis of the insert, particularly the central axis of the recess, in the intermediate region. Preferably, the insert is configured such that the angle at which the intermediate region of the channel extends around the central axis is at least 30°, preferably at least 90°, and particularly preferably at least 120°. Alternatively, a configuration can be envisioned in which the overflow element and the cap are integrally formed, i.e., particularly spaced apart from the insert, wherein preferably, the channel is formed between the guide element and the retaining element or cap. In particular, in this alternative configuration, the channel extends within the retaining element or cap and is defined in the intermediate region by the outer wall of the guide element and the inner surface of the retaining element or cap.

[0028] In addition, a valve is disclosed in which a shielding element is arranged between the overflow element and the bellows to prevent particles entering the bellows chamber through the compensating flow from directly impacting the bellows.

[0029] Therefore, another embodiment of this utility model is provided.

[0030] In addition, a valve is disclosed in which an overflow element is formed through a single channel, which preferably turns at least twice, more preferably at right angles each time.

[0031] This enables the simple and economical manufacture of valves, especially overflow elements or components.

[0032] In addition, a valve is disclosed in which the ratio of the length of the overflow element to the cross-sectional area of ​​the opening is greater than 1.

[0033] This achieves the function of structural optimization.

[0034] In addition, a valve is disclosed in which the overflow element is configured in a labyrinthine manner.

[0035] This achieves structural optimization and provides an alternative construction method.

[0036] In addition, a valve is disclosed in which the overflow element is manufactured by an additive manufacturing process.

[0037] This enabled the implementation of multiple alternative solutions in the construction and technical optimization of the overflow element.

[0038] This utility model relates to a valve for regulating the flow of fluid between an inlet chamber and an outlet chamber, the valve having: a valve body movable between a closed position and an open position by means of a sliding member, wherein the valve body is used to prevent the flow in the closed position and to allow the flow in the open position, wherein the sliding member extends from the interior of the valve through an opening to the exterior of the valve so as to be actuated therefrom; a bellows chamber for accommodating a bellows for sealing between the sliding member and the opening; wherein a fluid connection is established between the bellows chamber and the outlet chamber to allow compensating flow to flow into and out of the bellows chamber due to a volume change in the bellows chamber caused by actuation of the sliding member; wherein the fluid connection is established by an overflow element; characterized in that the geometry of the valve is configured such that particles entering the bellows chamber via the compensating flow are prevented from directly impacting the bellows.

[0039] The geometry used to prevent particles from directly impacting the bellows is achieved by at least one deflection within the overflow element, and / or by arranging the transition zone between the overflow element and the bellows chamber in a non-aligned manner with the bellows.

[0040] The steering is achieved through an overflow element within the component, which guides the slider.

[0041] The misalignment of the transition zone is achieved by an overflow element, which is arranged outside the guide element used to guide the slider.

[0042] The overflow element is formed through at least one first channel, wherein the geometry for preventing particles from directly impacting the bellows is achieved by deflection within the at least one first channel, wherein the overflow element forms a step to achieve the deflection, the step extending partially into the cross-sectional area of ​​the first channel, wherein the step is adjacent to the bellows chamber.

[0043] The overflow element is formed within the retaining element of the valve, the retaining element defining the bellows chamber, and the retaining element at least partially surrounding the bellows and / or the bellows chamber.

[0044] The valve has a housing, the housing including at least one cover, wherein the cover includes an opening for the sliding element, wherein the geometry for preventing particles from directly impacting the bellows is achieved by at least one deflection within the overflow element, wherein the overflow element is formed within the cover, wherein the cover having the overflow element extends into the outlet chamber and at least substantially surrounds the bellows.

[0045] The overflow element is formed through at least one channel that extends linearly from the outlet chamber to the inner wall defining the bellows chamber.

[0046] The valve has a guide element and an insert, the guide element for guiding the sliding element and the insert for retaining the guide element, wherein the overflow element is formed through at least one third channel extending through the insert into the bellows chamber, wherein the insert completely defines the inlet and outlet openings of the third channel, wherein the third channel is segmentally defined by the inner surface of the insert and the outer wall of the guide element.

[0047] A shielding element is arranged between the overflow element and the bellows to prevent particles entering the bellows chamber through the compensation flow from directly impacting the bellows.

[0048] The overflow element is formed through a single channel.

[0049] The ratio of the length of the overflow element to the cross-sectional area of ​​the opening is greater than 1.

[0050] The overflow element is configured in a labyrinthine shape.

[0051] The overflow element is manufactured by additive manufacturing.

[0052] The geometry used to prevent particles from directly impacting the bellows is achieved by deflection within at least one straight-lined first channel.

[0053] The channel will turn at least twice.

[0054] The channel turns at a right angle each time.

[0055] The overflow element is made from the valve. Attached Figure Description

[0056] Various embodiments of this utility model are shown in the accompanying drawings and described in detail below. In the drawings:

[0057] Figure 1 A cross-sectional view of valve 1 of this utility model is shown;

[0058] Figure 2a A detailed view of component 61 of this utility model is shown;

[0059] Figure 2b Show Figure 2a Another detailed view of component 61 of the present invention;

[0060] Figure 3 A cross-sectional view of valve 1 of the present invention is shown in an alternative embodiment;

[0061] Figure 4 A cross-sectional view of valve 1 of the present invention is shown in an alternative embodiment;

[0062] Figure 5a A cross-sectional view of valve 1* according to the prior art is shown;

[0063] Figure 5b A cross-sectional view of valve 1* according to the prior art is shown;

[0064] Figure 6 A cross-sectional view of valve 1 of the present invention is shown in another alternative embodiment;

[0065] Figure 7 A cross-sectional view of valve 1 of the present invention is shown in another alternative embodiment; and

[0066] Figure 8 A cross-sectional view of valve 1 of the present invention is shown in another alternative embodiment.

[0067] List of reference numerals

[0068] 1 Valve

[0069] 1* Existing technology valves

[0070] 2 Entrance Room

[0071] 3 Exit Room

[0072] 4 Valve body

[0073] 5 Corrugated pipe chamber

[0074] 6. Guide and overflow components

[0075] 61 components

[0076] 61d First overflow element

[0077] 62 Guide elements

[0078] 63 Second overflow element

[0079] 64 Shielding elements

[0080] 65 Third overflow element

[0081] 66 Fourth overflow element

[0082] 67 Fifth overflow element

[0083] 68 Embedded parts

[0084] 69 lids

[0085] 70 steps

[0086] 71 Holding element

[0087] 72. Middle area

[0088] 73 Entrance opening

[0089] 74. Exit opening

[0090] 75 Inner Surface

[0091] 76 outer wall

[0092] 77 First Passage

[0093] 77b Second Channel

[0094] 77c Third Channel

[0095] 7 Sliding parts

[0096] 8 Corrugated pipe

[0097] a streamline used to represent particle impaction

[0098] b. Streamlines used to represent the torque region M and the turbulence region T

[0099] M torque region

[0100] T turbulent region Detailed Implementation

[0101] The accompanying drawings contain simplified schematic diagrams. Partially, the same reference numerals are used for the same, but not necessarily identical, elements. Different views of the same element may be drawn to different scales. Directional indications, such as "left," "right," "up," and "down," should be understood with reference to the corresponding drawings and may vary relative to the object shown in each drawing.

[0102] Figure 1 A valve 1 according to the present invention is shown. The valve has an inlet chamber 2 and an outlet chamber 3. A pressure p1 exists in the inlet chamber 2, and a pressure p2 exists in the outlet chamber, where p1 > p2. A valve body 4 is arranged between the inlet chamber 2 and the outlet chamber 3, which is used to reversibly establish and interrupt the fluid connection between the inlet chamber 2 and the outlet chamber 3. For this purpose, the valve body 4 moves upward and downward via a sliding member 7. The sliding member 7 is axially guided by an element 61 and extends from it in the upper region of the valve 1 so that it can be actuated from the environment of the valve 1.

[0103] To facilitate the transition of the slider 7 from the interior of valve 1 to the environment of valve 1 (see...) Figure 1 In the upper part of the diagram, a bellows 8 is provided inside the externally sealing valve 1. When the sliding member 7 is actuated, the shape of the bellows 8 changes, causing it to extend and contract in the axial (vertical) direction. The bellows 8 is arranged within the bellows chamber 5 and changes the volume displaced within the bellows chamber 5 through the aforementioned extension and contraction. If this results in negative or overpressure within the bellows chamber 5, the pressure will hinder the actuation of the sliding member 7, which is undesirable. Therefore, pressure compensation for the bellows chamber 5 is provided by establishing a fluid connection between the bellows chamber 5 and the outlet chamber 3 through element 61. The specific construction of element 61 will be discussed later. Figure 2a and Figure 2b This is discussed in the middle. However, in Figure 1 As can be seen from the image, a connecting channel is provided within component 61, connecting the bellows chamber 5 and the outlet chamber 3. This connecting channel does not extend in a straight line, but rather (relative to...) Figure 1 Each part has a vertical section and a horizontal section. The vertical section is used to make fluid contact with the bellows chamber 5 and the outlet chamber 3 respectively, and the horizontal section is used to connect the two vertical sections.

[0104] This configuration, by redirecting the compensating flow between the bellows chamber 5 and the outlet chamber 3 twice, offers several advantages. Firstly, it prevents particles in the flow between the inlet chamber 2 and the outlet chamber 3 from unimpededly entering the bellows chamber 5 and impacting the surface of the bellows 8. Secondly, it blocks the flow between the bellows chamber 5 and the outlet chamber 3 without the actuating slider 7. This reduces eddies within the outlet chamber 3 (as explained above), and furthermore, undesirable effects within the inlet chamber 2 and / or outlet chamber 3 are not, or at least delayed, transmitted to the bellows chamber 5 (again, as explained above), and reduces the mechanical load on the bellows 8 due to the fluid flow within the bellows chamber 5 (again, as explained above).

[0105] Figure 2a and Figure 2b Detailed illustration Figure 1 Component 61, in which Figure 2b Shown from the side (flipped) Figure 2a Components in.

[0106] The fluid connection between the bellows chamber 5 and the outlet chamber 3 is formed by a first overflow element 61d in the form of a channel with three sections. This channel is formed by drilling, wherein relative to... Figure 2a Through-hole drilling was performed in the horizontal direction, and blind hole drilling was performed separately, which fluidly connected the through-hole drilling to the bellows chamber 5 and the outlet chamber 3 respectively.

[0107] Figure 3 An alternative embodiment of the present invention is shown. This embodiment is similar to... Figure 1 The difference in the implementation is that, instead of element 61, a guide element 62 is now provided, which axially guides the slider 7 but does not provide the possibility of overflow between the outlet chamber 3 and the bellows chamber 5. In this implementation, the possibility of overflow is formed by providing a second overflow element 63 in the form of a through-hole drilled in the housing portion of the valve 1. The orientation of this drilled hole is such that the drill axis does not point towards the bellows 8. This prevents particles from moving from the outlet chamber 3 into the bellows chamber 5 and from impacting the surface of the bellows 8 without obstruction.

[0108] Figure 4 An alternative embodiment of the present invention is shown. This embodiment is similar to... Figure 1 The difference in the implementation method is that a guide and overflow element 6 according to the prior art is provided for axially guiding the slide 7 and establishing the overflow possibility between the outlet chamber 3 and the bellows chamber 5.

[0109] To protect the bellows 8, in this embodiment, a shielding element 64 is provided, which is arranged radially circumferentially around the axis of the slider and positioned between the guide and overflow elements 6 and the bellows 8. The shielding element 64 is configured to be immovable relative to the slider 7 and is fixed thereon.

[0110] Figure 5a and Figure 5b The prior art valve 1* is shown. These have been reviewed in the introduction of the specification.

[0111] Figure 6 Another alternative embodiment of the present invention is shown, wherein a third overflow element 65 forms steps 70, which respectively define the formed first channels 77 and cause deflection as the medium flows into the bellows chamber 5. The third overflow element 65 is formed through a plurality of first channels 77. The geometry for preventing direct impact of particles on the bellows 8 is achieved by deflection within the substantially linearly extending first channels 77. The third overflow element 65 forms steps 70 to achieve deflection, which respectively extend partially into the cross-sectional region of one of the first channels 77. The steps 70 are respectively adjacent to the bellows chamber 5, wherein in particular the inner surface forming the respective steps 70 is adjacent to the inner wall defining the bellows chamber 5. The inner surface forming the steps is part of the third overflow element 65. The third overflow element 65 is formed by a retaining element 71 for retaining a guide element 62. The guide element 62 is retained on the retaining element 71 in a form-fitting and / or force-fitting manner. The retaining element 71 is formed integrally with the cover 69 of the valve 1. The cover 69 or the retaining element 71 defines the bellows chamber 5 toward the outlet chamber 3. A first channel 77 extends substantially linearly from the outlet chamber 3 to the inner wall of the bellows chamber 5 defining the retaining element 71 or cover 69. The valve 1 includes a housing that at least primarily forms the outlet chamber 3 and the inlet chamber 2. The cover 69 defines the outlet chamber 3 upwards. The cover 69 includes an opening for the sliding element 7. A third overflow element 65 is formed within the cover 69. The cover 69 with the third overflow element 65 extends into the outlet chamber 3 and at least primarily surrounds the bellows 8. The first channel 77 is formed spaced apart from the guide element 62. The first channel 77 extends substantially parallel to the longitudinal extension directions of the bellows 8 and the sliding element 7, respectively.

[0112] Figure 7 Another alternative embodiment of the present invention is shown, wherein the fourth overflow element 66 is configured as part of an insert 68 that holds a guide element 62 for guiding the sliding member 7. The fourth overflow element 66 is formed by a plurality of second channels 77b arranged in a generally linear pattern, extending from the outlet chamber 3 into the bellows chamber 5. The second channels 77b are spaced apart from the guide element 62.

[0113] Figure 8Another alternative embodiment of the present invention is shown, wherein the fifth overflow element 67 is configured as a third channel 77c extending from the outlet chamber 3 into the bellows chamber 5 within the insert 68 or retaining element 71 of the valve 1. The guide element 62 is held on the insert 68 or retaining element 71 in a form-fitting and / or force-fitting manner. In particular, the insert 68 is configured as a retaining element 71 for retaining the guide element 62. The insert 68 is placed within the housing of the valve 1, wherein a seal is arranged, particularly on the outer edge of the insert 68, for fluid-tight separation between the outlet chamber 3 and the upper side of the insert 68. The cover 69 of the housing is specifically used to define the bellows chamber 5 upwards and close the housing, except for the opening for the sliding element 7. The third channel 77c forms multiple detours. The third channel 77c includes an intermediate region 72, in which the third channel 77c is defined by the inner surface 75 of the insert 68 and the outer wall 76 of the guide element 62. The third channel 77c extends through the insert 68 into the bellows chamber 5, wherein the insert 68 completely defines the inlet opening 73 and the outlet opening 74 of the third channel 77c. The third channel 77c is segmentally defined, particularly in the intermediate region 72, by the inner surface 75 of the insert 68 and the outer wall 76 of the guide element 62. The outer wall 76 of the guide element 62 is formed on the outer side of the guide element 62 opposite to the slider 7. The outer wall 76 of the guide element 62 is substantially cylindrical. The outer wall 76 of the guide element 62 has substantially no grooves in the region defining the third channel 77c, particularly in the intermediate region 72.

[0114] The inlet opening 73 and the outlet opening 74 each have a central axis. A third channel 77c extends substantially parallel to the central axis of the inlet opening 73 in the region of the inlet opening 73. The third channel 77c extends substantially parallel to the central axis of the outlet opening 74 in the region of the outlet opening 74. The central axes of the inlet opening 73 and the outlet opening 74 extend parallel to the longitudinal extension directions of the bellows 8 and the slider 7, respectively. The third channel 77c extends substantially perpendicular to the central axes of the inlet opening 73 and the outlet opening 74 or the slider 7 in the intermediate region 72. The third channel 77c is bent from the inlet opening 73 to the intermediate region 72 and from the intermediate region 72 to the outlet opening 74, respectively. The third channel 77c is formed bent around the slider or guide element 62 in the intermediate region 72. An insert 68 forms a groove for receiving the guide element 62. Particularly preferably, the inner surface 75 of the insert 68 defining the third channel 77c is adjacent to the inner wall of the insert 68 defining the groove. The insert 68 is configured such that the third channel 77c extends at least partially around the central axis of the insert 68, particularly the central axis of the recess, in the intermediate region 72. The insert 68 is configured such that the intermediate region 72 of the third channel 77c extends at an angle of approximately 180° around the central axis, the guide element 62, or the slider 7.

[0115] Other configurations of the fifth overflow element 67 are also conceivable, such as having more than one third channel 77c, which extend at a small angle, specifically around the central axis, guide element 62, or slider 7, respectively. Alternatively, a configuration in which the fifth overflow element 67 and the cover 69 are integrally formed (similar to...) Figure 3 and Figure 6 (as shown in the configuration), wherein preferably, a third channel 77c is formed between the guide element 62 and the retaining element 71 or cover 69.

Claims

1. A valve for regulating the flow of fluid between an inlet chamber and an outlet chamber, said valve having: The valve body is movable between a closed position and an open position by means of a sliding member, wherein, The valve body is used to prevent the flow in the closed position and allow the flow in the open position, wherein the slider extends from the interior of the valve through an opening to the exterior of the valve so that it can be actuated therefrom. A bellows chamber for accommodating a bellows for sealing between the sliding element and the opening, wherein a fluid connection is established between the bellows chamber and the outlet chamber to allow compensating flow into and out of the bellows chamber caused by volume changes within the bellows chamber due to actuation of the sliding element. The fluid connection is established via an overflow element. Its features are, The valve geometry is configured to prevent particles entering the bellows chamber via the compensating flow from directly impacting the bellows. The overflow element is formed through at least one channel, wherein the geometry for preventing particles from directly impacting the bellows is achieved by deflection within at least one straight-extending channel, wherein the overflow element forms steps to achieve deflection, these steps extending partially into the cross-section of the channel, wherein the steps are adjacent to the bellows chamber.

2. The valve according to claim 1, characterized in that, The geometry used to prevent particles from directly impacting the bellows is achieved by at least one deflection within the overflow element, and / or by a transition zone between the overflow element and the bellows chamber that is not aligned with the bellows.

3. The valve according to claim 2, characterized in that, The steering is formed by an overflow element within the element that guides the slider.

4. The valve according to claim 2, characterized in that, The misalignment of the transition zone is achieved by an overflow element, which is arranged outside the guide element used to guide the slider.

5. The valve according to claim 1, characterized in that, The overflow element is formed within the retaining element of the valve, the retaining element defining the bellows chamber, and the retaining element at least partially surrounding the bellows and / or the bellows chamber.

6. The valve according to claim 1, characterized in that, The valve has a housing, the housing including at least one cover, wherein the cover includes an opening for the sliding element, wherein the geometry for preventing particles from directly impacting the bellows is achieved by at least one deflection within the overflow element, wherein the overflow element is formed within the cover, wherein the cover having the overflow element extends into the outlet chamber and at least substantially surrounds the bellows.

7. The valve according to claim 1, characterized in that, The overflow element is formed through at least one channel that extends linearly from the outlet chamber to the inner wall defining the bellows chamber.

8. The valve according to claim 1, characterized in that, The valve has a guide element and an insert, the guide element for guiding the sliding element and the insert for retaining the guide element, wherein the overflow element is formed through at least one third channel extending through the insert into the bellows chamber, wherein the insert completely defines the inlet and outlet openings of the third channel, wherein the third channel is segmentally defined by the inner surface of the insert and the outer wall of the guide element.

9. The valve according to claim 1, characterized in that, A shielding element is arranged between the overflow element and the bellows to prevent particles entering the bellows chamber through the compensation flow from directly impacting the bellows.

10. The valve according to claim 1, characterized in that, The overflow element is formed through a single channel.

11. The valve according to claim 10, characterized in that, The ratio of the length of the overflow element to the cross-sectional area of ​​the opening is greater than 1.

12. The valve according to claim 11, characterized in that, The overflow element is configured in a labyrinthine shape.

13. The valve according to claim 3, characterized in that, The overflow element is manufactured by additive manufacturing.

14. The valve according to claim 10, characterized in that, The channel will turn at least twice.

15. The valve according to claim 14, characterized in that, The channel turns at a right angle each time.

16. An overflow element, characterized in that, The overflow element is made of the valve according to claim 3.

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