Valve housing for valves

Abstract

The present invention relates to a method for manufacturing a valve housing (10) of a valve (1), wherein the valve housing is formed by a main component (11) and a cover (12), wherein firstly the main component (11) is formed with an outer edge section (20) defining an inner surface and an outer surface, and an opening from the outside to an inner hollow portion (6), wherein the inner surface is formed with an inner recess (23), the inner recess (23) having a first surface (22) and a second surface (24) and a first contact surface (27), and wherein the cover (12) comprises a fourth surface (31) and a second contact surface (33), and wherein the method comprises the step of positioning the cover (12) within the main component (11) so that the fourth surface (31) abuts against the second surface (24) and the second contact surface (33) abuts against the first contact surface (27), and wherein the next step is to radially compress at least the outer portion of the outer edge section (20) to a second angle, wherein the upper and lower outer edge surfaces (30) of the cover (12) contact the first and second surfaces (22, 24) to secure the cover (12) in place. The invention also relates to the first component (11) and the second component (12), and also to the valve housing.

Description

Technical Field

[0001] The present invention relates to valves, or more particularly to valve housings of such valves. Background Art

[0002] The valve is typically formed by a valve housing that forms an internal hollow portion between an inlet and an outlet. Valve elements are positioned in the internal hollow portion to perform regulation of the fluid flow traveling between the inlet and the outlet, wherein these valve elements typically include a replaceable valve plug element connected to a valve seat for operation, and may also include a biasing element and / or a diaphragm, a sealing element, etc.

[0003] In order to insert the valve element, the valve housing is usually formed from a main component, the main component including the internal hollow part and any flow path between the fluid inlet and the fluid outlet, and an opening is formed therein to introduce and install the valve element into the internal hollow part. The cover of the valve housing is then positioned to close the opening, wherein the cover is typically connected by bolts, brazing, welding, etc.

[0004] The present invention relates to manufacturing a valve housing consisting of a main part and a cover in such a way that stresses are reduced and less material is used, which results in a less expensive valve. Summary of the invention

[0005] The technical solution is defined in the claims.

[0006] The technical solution includes a main component of the valve housing introduced into the valve, the main component is formed with an outer edge segment defining an inner surface and an outer surface, and an opening from the outside to an inner hollow portion, wherein the inner surface is formed with an inner recess, the inner recess having a first surface and a second surface defining a plane P, wherein a cover of the valve housing is suitable for being positioned at the plane P to close the opening, wherein at least the outer portion of the outer edge segment is inclined at a first angle relative to a line L, the line L being orthogonal to the plane P and extending from the inner hollow portion to the opening.

[0007] The second surface may be continuous around the entire inner surface periphery, or the second surface may be formed in a plurality of parts or sections around the periphery.

[0008] The outer portion of the outer edge section may be adapted to be pressed inwardly to a second angle so that the outer portion of the outer edge section extends more parallel to the line L than the first angle. In addition, the inner recess may be adapted to engage with the edge of the cover in such a way that only the second surface engages with the outer edge surface when the outer portion of the outer edge section is at a first angle of inclination. This ensures that the first surface is adapted to engage with the outer edge surface of the cover when pressed to the second angle so that the cover is secured in place within the opening of the main component, thereby closing the opening.

[0009] The primary component may be formed with a first contact surface adapted to contact a matching second contact surface of the cover.

[0010] The first contact surface can form an edge with the first inclined surface (i.e., the first contact surface and the first inclined surface share an edge), the first inclined surface is inclined at a third angle relative to the line L, and the second inclined surface can be similarly inclined so that when the cover is inserted into the opening of the main component, the surfaces of the cover and the opening of the main component do not conflict.

[0011] An outer recess may be formed in the outer surface of the primary component and positioned directly below the inner recess in a direction from the opening towards the inner hollow portion to reduce stress in the material during the extrusion process.

[0012] A cover of the valve housing may be adapted to be inserted for connection to a main component according to any of the preceding embodiments, wherein the cover comprises a fourth surface adapted to abut against the second surface.

[0013] The outer edge section of the cover may be formed with a curved outer portion which creates some spring effect, thereby helping to hold the cover in place.

[0014] The invention also relates to a valve housing comprising a main part according to any of the preceding embodiments and a cover according to any of the preceding embodiments.

[0015] The invention also relates to a valve housing formed by:

[0016] a main part formed with an outer edge section defining an inner surface and an outer surface, and an opening from the outside to the inner hollow part, wherein the inner surface is formed with an inner recess having a first surface and a second surface, the main part further comprising a first contact surface, the valve housing further comprising:

[0017] a cover comprising a fourth surface and a second contact surface and being inserted to be connected to the main part so that the fourth surface abuts against the second surface,

[0018] Wherein P defines a plane at which the cover is positioned to close the opening, wherein the line L extends orthogonal to the plane P from the inner hollow portion toward the opening.

[0019] The invention also relates to a method for producing a valve housing of a valve, wherein the valve housing is formed from a main part and a cover, wherein

[0020] - the main component is formed with an outer edge section defining an inner surface and an outer surface, and an opening from the outside to the inner hollow part, wherein the inner surface is formed with an inner recess having a first surface and a second surface defining a plane P, wherein the cover of the valve housing is adapted to be positioned at the plane to close the opening, wherein at least the outer side portion of the outer edge section is inclined at a first angle relative to a line L, which is orthogonal to the plane P and extends from the inner hollow part to the opening, the main component further comprising a first contact surface, and wherein

[0021] - the cover comprises a fourth surface and a second contact surface, and wherein

[0022] The method comprises the step of positioning the cover within the main component so that the fourth surface abuts against the second surface, and wherein the next step is to radially squeeze at least the outer portion of the outer edge segment to a second angle, wherein the outer edge surface of the upper side and the outer edge surface of the lower side of the cover contact the first surface and the second surface to secure the cover in place.

[0023] The method involves a main component and a cover comprising the features of any one of the embodiments described. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A general valve is shown to which the present invention may be applied.

[0025] Figure 2 An exemplary embodiment of an outer edge section of an opening of a main part of a valve housing according to the invention is shown.

[0026] Figure 3 An embodiment of a cover for a valve housing according to the invention is shown.

[0027] Figure 4 The cover is shown positioned within the opening of the main component.

[0028] Figure 5 The cover is shown being fixed to the main part by compression of at least the outer part of the outer edge section of the main part. DETAILED DESCRIPTION

[0029] It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from the detailed description.

[0030] Figure 1 An example valve (1) in which the present invention may be implemented is shown. The valve is formed by a valve housing (10) which forms an internal hollow portion (6) between an inlet and an outlet. Valve elements (5) are positioned in the internal hollow portion (6) to perform regulation of the fluid flow traveling between the inlet and the outlet, wherein these valve elements (5) typically include a replaceable valve plug element connected to a valve seat for operation, and may also include a biasing element and / or a diaphragm, a sealing element, etc.

[0031] The valve housing (10) is formed of two parts, namely a main part (11) forming the inner hollow part (6), and an opening through which the valve element (5) can be inserted. The cover (12) of the valve housing is adapted to be connected to the main part (11) so as to seal the opening once the valve element (5) has been installed in the inner hollow part (6).

[0032] Figure 2 The figure shows the main part (11), the edge portion (20) surrounding the opening, wherein the edge portion (20) forms features (21-24) suitable for contacting the cover (12) when inserted to seal the opening, wherein this position defines a plane P.

[0033] The edge portion (20) is formed to operate as a "hook" (21), wherein the edge portion (20) is formed with an internal recess (23) at the end, the internal recess (23) being formed between the first recess side wall or edge (21) and the cover second recess side wall or surface (24). In an embodiment, the internal recess (23) is continuous and surrounds the entire perimeter of the opening, but may alternatively be one or more separate sub-recesses (23) formed along the perimeter of the opening.

[0034] The recess (23) and its surfaces (22, 24) are adapted to catch the edge of the cover (12). Initially, the edge portion (20) is formed so that a line C parallel to the edge portion (20) intersects the plane P at a first angle, the first angle being the larger angle defined from the opening toward the line C. The first angle is large enough to allow the cover (12) to be inserted into the opening until the outer edge surface (30) (see Figure 3 and Figure 4) contacts the second surface (24). This corresponds to at least an outer portion of the outer edge section (20), which is inclined at a first angle relative to the line L, which extends orthogonally to the plane P from the inner hollow portion (6) to the opening.

[0035] Due to the angle or inclination of the edge portion (20), the first surface (22) defines an opening having a larger diameter than the second surface (24) and the cover (12), while the second surface (24) defines a smaller diameter than the cover (12).

[0036] The first inclined surface (27) may be formed in a manner that may be in direct contact with the second surface (24) and is parallel to a line B that intersects the plane P at a second angle, the second angle being a large angle defined from the opening toward the line B. The third surface or recess (26) may be positioned in the interior of the main portion (11) below the first inclined surface (27) when viewed relative to the outer opening.

[0037] For example, in an embodiment having a first inclined surface (27) between the second surface (24) and the third surface (26), a first contact surface (28) is formed between the second surface (24) and the third surface (26). As shown, the first contact surface (28) can be parallel to the line L, or inclined at an angle relative to the line L.

[0038] In addition, the inner corner or edge formed by the third surface (26) and the first contact surface (28) helps reduce stress, especially after crimping. This is partly because the two surfaces, the third surface (26) and the first contact surface (28), direct forces toward the inner corner. To further reduce stress and provide reinforcement, the wall thickness of the first shell (11) in the area around the inner corner of the third surface (26) and the first contact surface (28) is widened (36) to form an outwardly extending "bulge".

[0039] Figure 3 The figure shows a side view of an embodiment of the cover (12). The cover may have an extension which is substantially plate-shaped or at least formed so that when positioned in a defined closed position within the opening of the main part (11), the cover extends parallel to the plane P and fills at least a large part of the opening.

[0040] At the edge, the cover (12) comprises an outer edge surface (30) adapted to be "grabbed" by an edge portion (20) of the main part (11). A fourth surface (31) of the cover (12) forms a first contact surface of the outer edge surface (30) opposite a second surface (24) of the valve housing (10) formed in the main part (11).

[0041] The second inclined surface (33) can be formed in a manner that may be in direct contact with the fourth surface (31), and when positioned in a closed position in the main component (11), the second inclined surface (33) is inclined in a manner parallel to a line B, which intersects the plane P at a second angle, and the second angle is a large angle defined from the opening toward the line B.

[0042] In an embodiment, the first inclined surface (27) and the second inclined surface (33) are adapted to cooperate (corporate) during assembly of the cover (12) of the valve housing with the main part (11) of the valve housing. An O-ring may be pre-installed on the cover (12) of the valve housing (10), and during assembly, the first inclined surface (27) thereby guides the O-ring to slide into the valve housing (10). The second inclined surface (33) is positioned in such a way that the second inclined surface (33) avoids contact with the first inclined surface (27) in a way that hinders the introduction of the O-ring. In an embodiment, the second inclined surface (33) will be inclined but will be, for example, parallel to the line P.

[0043] In an alternative or related embodiment, the first inclined surface (27) and the second inclined surface (33) are adapted to contact when the cover (12) is positioned in the opening of the main part (11) in the closed position. Such contact may occur at any time when the cover (12) is in place, or alternatively only when the cover (12) is fixed in place (see Figure 5 and related text) during said position, and / or occurs after said cover (12) has been secured in said position.

[0044] For example, in an embodiment where the second inclined surface (33) is located between the fourth surface (31) and the fifth surface (32), the second contact surface (34) is formed between the fourth surface (31) and the fifth surface (32). When the cover (12) is in the closed position, the second contact surface (34) can be parallel to the line L as shown, or can be inclined at an angle relative to the line L.

[0045] In an embodiment, the first contact surface (28) and the second contact surface (34) are adapted to come into contact when the cover (12) is positioned in the opening of the main part (11) in the closed position. Such contact may occur at any time when the cover (12) is in position, or alternatively only when the cover (12) is fixed in position (see Figure 5 and related text) during said position, and / or occurs after said cover (12) has been secured in said position.

[0046] In the illustrated embodiment, the cover (12) is further formed with a fifth surface (32) adapted to cooperate with the third surface (26) of the main component (11) so as to constrain a sealing element (such as a gasket).

[0047] In the illustrated embodiment, the cover (12) is formed with a curved outer portion (50) at the edge portion to produce some spring effect. The curved outer portion (50) can be slightly squeezed to produce an outward spring effect. When the cover (12) is inserted into the opening when the cover (12) is squeezed into place, this tensions the curved outer portion (50) to push it towards the inner recess (23) in the main part (11). This helps to keep the cover in place and seal the opening.

[0048] When the outer edge section (20) is pressed against the cover (12) to hook the cover (12) into a fixed position through the recess (23) and its first surface (22) and second surface (23), the curved outer portion (50) can also be tensioned. Therefore, in the embodiment, the diameter of the cover (12) after it has been pressed is slightly larger than the diameter of the opening defined by the first surface (22).

[0049] Figure 4 The cover (12) is shown in the closed position within the opening. The fourth surface (31) is shown in contact with the second surface (24), and the second contact surface (34) is in contact with the first contact surface (28).

[0050] When the cover (12) is positioned in the opening of the main part (11), the second surface (24) and / or the first inclined surface (27) thus define the closed position in which the cover (12) will be positioned and hold the cover (12) in place during fixation, as will be explained later.

[0051] Also shown is a hollow portion (40) defined by the fifth surface (32) and the third surface (26), in which a sealing element (such as a gasket) can be positioned to completely ensure fluid sealing.

[0052] Figure 5 The fixing using a crimping process is shown. The outer edge section (20) is pressed inwardly by a tool until the hook-shaped portion (21) engages the outer edge surface (30) of the cover (12) so that the cover (12) is trapped in the inner recess (23) between the first surface (22) and the second surface (24). The hook-shaped portion (21) is thus "hooked" onto the outer edge surface (30). The second inclined surface (33) can rest on the first inclined surface (27) to produce a stable contact during operation. The corner between the first inclined surface (27) and the second surface (24) forms a fulcrum for pressing the outer edge section (20), leaving the rest of the main part (11) substantially unaffected.

[0053] The second contact surface (34) may contact the first contact surface (28) to form an inner surface, and the outer edge section (20) may be curled relative to the inner surface.

[0054] In the main embodiment, the outer portion (20) is pressed inwardly around the entire periphery in such a way that a curl is formed, and the diameter of the opening defined by the first surface (22) is compressed to be smaller than the diameter of the cover (12), and thus may be the same size as the diameter of the opening defined by the second surface (24).

[0055] In an embodiment, using the curved outer portion (50), this section is thus tensioned due to the curling of the outer edge section (20) and subsequently pushed outwards to enhance the fixation of the cover (12).

[0056] The outer recess (25) in the main part (11) is positioned directly below the inner recess (23) in the direction from the opening toward the inner hollow part (6), and the outer recess (35) is formed to reduce the stress in the material during the extrusion process. The outer recess (25) can be formed at the entire periphery or in multiple parts or sections.

[0057] Typically, the stress reduction is also due to the radial curling of the outer edge section (20) formed by the contact points (27, 28, 33, 34) of the first component (11) and the second component (12) and by the third surface (26) and the widening (36).

[0058] Reference numerals

[0059] 1-Valve

[0060] 5-Valve element

[0061] 6-Inner hollow part

[0062] 10-Valve housing

[0063] 11-Main parts of valve housing

[0064] 12-Valve housing cover

[0065] 20-Edge Segment

[0066] 21-Hooked part

[0067] 22-First surface

[0068] 23-Internal recess / hook

[0069] 24- Second surface

[0070] 25-Outer recess

[0071] 26-Third Surface-Edge

[0072] 27-First inclined surface

[0073] 28-First contact surface

[0074] 30-Outer edge surface

[0075] 31-Fourth Surface-Edge

[0076] 32-Fifth Surface-Edge

[0077] 33- Second inclined surface

[0078] 34- Second contact surface

[0079] 36-Wide portion of the first valve housing

[0080] 40-Hollow part

[0081] 50 - curved outer part that creates some spring capacity

Claims

1. A main part (11) of a valve housing (10) for a valve, the main part (11) being formed with an outer edge section (20) defining an inner surface and an outer surface, and an opening from the outside to an inner hollow portion (6), wherein the inner surface is formed with an inner recess (23), the inner recess (23) having a first surface (22) and a second surface (24) defining a plane P, wherein a cover (12) of the valve housing (10) is adapted to be positioned at the plane P to close the opening, wherein at least an outer portion of the outer edge section (20) is inclined at a first angle relative to a line L, the line L being orthogonal to the plane P and extending from the inner hollow portion (6) to the opening, It is characterized in that The outer recess (25) in the main part is positioned directly below the inner recess (23) in the direction from the opening towards the inner hollow (6) to reduce stress in the material during the extrusion process.

2. The main part (11) according to claim 1, wherein the second surface (24) is continuous around the entire inner surface periphery.

3. The main component (11) according to claim 1, wherein the outer part of the outer edge segment (20) is adapted to be pressed inwardly to a second angle so that the outer part of the outer edge segment (20) extends in a manner that is more parallel to the line L than the first angle.

4. The main component (11) according to any one of claims 1 to 3, wherein the inner recess (23) is adapted to engage with the edge of the cover (12) in such a way that only the second surface (24) engages with the outer edge surface (30) when the outer portion of the outer edge section (20) is at a first inclination.

5. The main component (11) according to claim 3, wherein the first surface (22) is adapted to engage with an outer edge surface (30) of the cover (12) when pressed to the second angle.

6. The main component (11) according to any one of claims 1-3, wherein the main component (11) is formed with a first contact surface (28) adapted to contact a matching second contact surface (34) of the cover (12).

7. The main part (11) according to claim 6, wherein said first contact surface (28) is parallel to said line L.

8. The main component (11) according to claim 6, wherein an edge of the first contact surface (28) has a first inclined surface (27), the first inclined surface (27) being inclined at a third angle relative to the line L.

9. A cover (12) of a valve housing (10), the cover (12) being adapted to be inserted for connection to a main part (11) according to any one of the preceding claims, wherein the cover (12) comprises a fourth surface (31) adapted to abut against the second surface (24).

10. The cover (12) according to claim 9, wherein the outer edge section is formed with a curved outer side portion (50) producing a partial spring effect.

11. A valve housing (10) comprising a main part (11) according to any one of claims 1-8, the main part (11) being connected to a cover (12) according to claim 9 or 10.

12. A valve housing (10), comprising: - a main component (11), the main component (11) being formed with an outer edge section (20) defining an inner surface and an outer surface, and an opening from the outside to the inner hollow portion (6), wherein the inner surface is formed with an inner recess (23), the inner recess (23) having a first surface (22) and a second surface (24), the main component (11) further comprising a first contact surface (28), and the main component (11) comprising an outer recess (25) positioned directly below the inner recess (23) in a direction from the opening toward the inner hollow portion (6), the valve housing (10) further comprising: - a cover (12) comprising a fourth surface (31) and a second contact surface (33) and being inserted to be connected to the main part (11) so that the fourth surface (31) abuts against the second surface (24), A plane is defined by P, the cover (12) is positioned at the plane to close the opening, wherein at least an outer portion of the outer edge section (20) is inclined at a first angle relative to a line L, the line L being orthogonal to the plane P and extending from the inner hollow portion (6) toward the opening.

13. A method for manufacturing a valve housing (10) of a valve (1), wherein the valve housing is formed from a main part (11) and a cover (12), wherein - the main component (11) is formed with an outer edge section (20) defining an inner surface and an outer surface, and an opening from the outside to the inner hollow portion (6), wherein the inner surface is formed with an inner recess (23), the inner recess (23) having a first surface (22) and a second surface (24) defining a plane P, wherein the cover (12) of the valve housing (10) is adapted to be positioned at the plane to close the opening, wherein at least an outer portion of the outer edge section (20) is inclined at a first angle relative to a line L, the line L being orthogonal to the plane P and extending from the inner hollow portion (6) to the opening, the main component (11) further comprising a first contact surface (28), and the main component (11) further comprising an outer recess (25) positioned directly below the inner recess (23) in a direction from the opening toward the inner hollow portion (6), and wherein - the cover (12) comprises a fourth surface (31) and a second contact surface (33), and wherein The method comprises the step of positioning the cover (12) within the main component (11) so that the fourth surface (31) abuts against the second surface (24), and wherein the next step is to radially compress at least the outer portion of the outer edge section (20) to a second angle, wherein the upper outer edge surface (30) and the lower outer edge surface (30) of the cover (12) contact the first surface (22) and the second surface (24) to fix the cover (12) in place.

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