pinch valve

Abstract

The invention relates to a clamp valve (2) comprising a main body (10) having a receiving space (12) for a tube section, wherein the main body has a lateral opening (14) leading into the receiving space; further comprising a counter-bearing portion (30) for a compressor (40) movable along an actuation axis (S); and further comprising a closure element (20) movably fastened to the main body and movable relative to the main body between a first position, in which the closure element at least partially closes the lateral opening of the main body, and a second position, in which the closure element exposes an insertion opening (22) for the tube section.

Description

Technical Field

[0001] This invention relates to a clamp valve for pinching the clamp portion of a tube. Background Technology

[0002] Pinch valves used to clamp pipe sections are well known. Summary of the Invention

[0003] The objective of this invention is achieved by a pinch valve according to the claimed content. Advantageous embodiments can be found in the claimed content, the following description, and the accompanying drawings.

[0004] One aspect of this specification relates to a pinch valve, the pinch valve including a body having a receiving space for a tube portion, wherein the body has a lateral opening leading to the receiving space; the pinch valve also includes a closing element movably fastened to the body and movable relative to the body between a first position and a second position, wherein in the first position the closing element at least partially closes the lateral opening of the body, and in the second position the closing element exposes an insertion opening for the tube portion; the pinch valve also includes a counter-load portion of a compressor for movement along an actuation shaft.

[0005] The tube section can be inserted or removed laterally through the insertion opening. Advantageously, the pinch valve allows the clamping of the tube section within the pinch valve to be released from the clamp valve itself, while preventing the clamping of the tube section from being released from the actuator. In particular, the replacement of the actuator or the disassembly for changing the tube section can be omitted. Therefore, the operation of the pinch valve is improved.

[0006] When the pipe section is correctly positioned between the compressor and the anti-load section, proper clamping of the pipeline or pipe section can be reliably achieved. This means that when the pipe section is not correctly positioned in the containment space, the process fluid can flow freely in the pipe, regardless of the state of the pinch valve (e.g., open or closed). Furthermore, even when the flow through the pipe is blocked when the pinch valve is closed, the controller of the fluid control system can still continue to operate. In this situation, the control of the process fluid is weakened. The fluid control system cannot function properly as long as the pipe is not correctly positioned in the pipe groove or containment space. The closing element eliminates the above problems and improves process reliability.

[0007] An advantageous example is characterized by a closing element fastened to the body so that it can rotate about a rotation axis.

[0008] Advantageously, the body and the closing element are thus connected to each other in the hinge area. Therefore, the closing element can fold together with the tube portion held by it. This means that the tube portion is introduced into the extrusion chamber in a controlled manner and can be removed from the extrusion chamber. The operation of the clamp valve is improved. Simultaneously, the controlled adaptation of the tube portion increases process reliability.

[0009] A favorable example is characterized by the rotation axis extending vertically and being a certain distance from the actuation axis.

[0010] This allows the tube section to be advantageously removed or supplied perpendicularly to the actuation shaft during maintenance, further preventing unnecessary bending of the tube section.

[0011] An advantageous example is characterized in that the opening angle between the first and second positions of the closing element is limited to a range of 40° and 80°, and particularly to a range of 50° and 60°.

[0012] This range of opening angles allows operators to easily replace the tube section, as it is secured by this semi-open closure element, making replacement convenient. Furthermore, the closure element thus serves as a protective measure to prevent any accidental engagement in the compressor area.

[0013] An advantageous example is characterized by a closing element providing a counter-load section for the compressor that moves along the actuation shaft.

[0014] The anti-load section with a closed element simplifies operation; for example, the insertion opening can be easily released with one hand, and the tube section can be replaced.

[0015] An advantageous example is characterized in that the closing element and / or the anti-load portion includes at least one stop region for restricting the movement of the compressor along the actuation shaft and in the direction of the anti-load portion.

[0016] Because the compressor does not exceed the position defined by the stop area, the stop area advantageously allows for controlled compression of the tube portion.

[0017] A favorable example is characterized by the fact that the closing element is detachably connected to the body.

[0018] The detachable connection reduces the number of setup steps required for application changes, such as changes to the type of tubing, compressor geometry, and / or anti-load geometry. It eliminates the need for driver removal, loosening of clamped valves, or replacement of the entire clamped valve.

[0019] Simultaneously, any adjustments made by operators or maintenance personnel to the geometry of the anti-load section result in the retention of the clamped tube section. This reduces the likelihood of damage and consequently decreases the transport of particles from the tube section to the process fluid. This improves process reliability.

[0020] A favorable example is characterized by the anti-load section and the closing element being integrally molded.

[0021] The design of the pinch valve is advantageously simplified, in which the anti-load component is replaced along with the valve disc. In particular, the increased freedom allows for the confirmation of the closing element, enabling the operator to be instructed on the intended application. This improves operability and maintainability.

[0022] An advantageous example is characterized by the anti-load portion being detachably connected to the closing element.

[0023] This results in a modular pinch valve that allows the closure element to be retained for the next insertion and only for the anti-load section to be replaced. This reduces manufacturing costs while increasing application flexibility.

[0024] An advantageous example is characterized in that, when the closing element is in the first position, the contact profile of the closing element opposite to the anti-bearing portion abuts against the inner contact profile of the body.

[0025] If the compressor presses against the tube section or the stop area, the force is transmitted to the body through the closing element. Force transmission through contact reduces the pressure of a movably formed fastener between the closing element and the body. Advantageously, force transmission along and parallel to the actuation axis is thus improved. Hinges, in particular, benefit because the force is preferably transmitted further radially into the inner contact profile.

[0026] An advantageous example is characterized in that a locking element movably fastened to the body is movable relative to the body between a release position and a locked position, wherein in the release position the locking element allows the closing element to move to a second position, and in the locked position the locking element restricts the closing element from moving out of the first position.

[0027] The locking element prevents the pipe section from being accidentally removed during the operation of the pinch valve.

[0028] An advantageous example is characterized in that the locking element is rotatably mounted about the actuation shaft, the clamp of the locking element secures the distal portion of the closing element in the locked position, and the recess of the clamp of the locking element in the released position releases the distal portion of the closing element to move the closing element to a second position.

[0029] Advantageously, this provides an easy-to-operate locking element, and the recess of the locking element represents a visible indication of locking or unlocking.

[0030] An advantageous example is characterized in that the compressor is detachably fastened to a valve stem extending along the actuation shaft.

[0031] Therefore, the compressor geometry can be advantageously adapted to different pipe configurations.

[0032] An advantageous example is characterized in that the fastening portion of the body is located radially outside the channel opening for the valve stem.

[0033] Together with the pipe-changing mechanism, this fastening element advantageously provides clean space / ash space separation. The clamp valve portion for receiving the pipe is located within the clean space. On the other hand, the actuator can be arranged within the space. This reduces cleaning work and lowers the requirements for the actuator.

[0034] An advantageous example is characterized in that the anti-load portion opens in an opening whose diameter is smaller than the inner diameter of the anti-load portion.

[0035] The anti-load section effectively secures the tube section due to its tapered opening and prevents the tube section from accidentally falling off. Attached Figure Description

[0036] The attached diagram shows the following:

[0037] Figure 1 : A 3D view of a pinch valve;

[0038] Figure 2a 3a, 6a, 7a: Pinch valves having a closing element in the second position;

[0039] Figure 2b 3b, 6b, 7b: Pinch valves having a closing element in the first position;

[0040] Figure 4 Cross-sectional view of a pinch valve without a closing element;

[0041] Figure 5 Side view of a pinch valve without a closing element;

[0042] Figure 8 Closing elements with different inserts;

[0043] Figure 9 Multiple compressor / anti-bearer pairs. Detailed Implementation

[0044] Figure 1A perspective view of the pinch valve 2 is shown. The body 10 includes a receiving space 12 for a tube portion in which a process medium flows. The body 10 includes two opposing openings 18 and 19 and a lateral opening 14. The opposing openings 18 and 19 form a channel opening and are used to receive the tube portion extending along the tube axis T. The lateral opening 14 opens from the outside into the receiving space 12. The lateral opening 14 is used for removing and supplying the tube portion. The receiving space 12 is thus defined by the body 10. The body 10 is U-shaped.

[0045] An anti-load section 30 is provided and serves as the anti-load section of a compressor that moves along the actuation shaft S.

[0046] The petal-shaped closing element 20, which is movably fastened to the body 10, can be in a first position relative to the body 10. Figure 1 (not shown in the image) and second position (e.g.) Figure 1 The closure element 20 moves between the two positions (as shown), and in the first position, the closure element 20 at least partially closes the lateral opening 14 of the body, while in the second position, the closure element 20 exposes the insertion opening 22 for the tube portion. The insertion opening 22 may also be referred to as an insertion and removal opening.

[0047] The flow of process fluid in the pipe section inserted into the pinch valve 2 is affected by the compressor pressing against the pipe section from one side along the actuation shaft. The anti-load portion 30 is fixedly in contact with the side of the pipe section opposite the compressor. If the compressor is pressing against the flexible pipe section at this time, the inner diameter of the pipe section decreases, thus restricting the flow of process fluid. The anti-load portion 30 can also be referred to as the contact portion.

[0048] The main body 10, at least partially U-shaped, includes a lateral connecting portion 11 that extends substantially parallel to and at a distance from the actuation shaft S. Two portions 13 and 15 extend from the connecting portion 11, and are spaced apart from each other and extend substantially perpendicular to the actuation shaft S. The connecting portion 11 and the portions 13 and 15 extending from it define a receiving space 12.

[0049] The lateral opening 14 is defined by the body 10, particularly by the distal ends of portions 13 and 15. The insertion opening 22 is defined by the closing element 20 and the body 10, or by elements arranged on the body 10.

[0050] The closing element 20 is fastened to the distal region of a portion 10 of the body 10 so that it can rotate about the rotation axis R. The rotation axis R extends perpendicular to the actuation axis S and is spaced a certain distance from the actuation axis S.

[0051] In the example shown, the closure element 20 provides an anti-load portion 30. The anti-load portion 30 is integrally formed with the closure element 20. Due to the integrated design, the closure element 20 provides a receiving port for the tube portion. This means that the closure element 20 allows the tube portion to... Figure 1 The device can move between the removal or insertion position and the operating position. A threaded connection extending along the rotation axis R allows for the replacement of the closure element 30. Therefore, the closure element 20 is detachably connected to the body 10.

[0052] In an example of pinch valve 2 ( Figure 1 In (not shown), the anti-load portion 30 is detachably connected to the closing element 20. For example, the separately designed anti-load portion 30 is connected to the closing element along axis A, which extends perpendicular to the rotation axis R and is spaced a certain distance from the rotation axis R. For example, the connection between the anti-load portion 30 and the closing element 20 is designed as a dovetail connection.

[0053] The closing element 20 and / or the anti-load portion 30 include at least one stop region 24 for restricting the movement of the compressor along the actuation shaft S and the direction of the anti-load portion 30.

[0054] When the closing element 20 is in the first position, the contact profile 26 of the closing element 20, which is opposite to the anti-bearing portion 30, abuts against the inner contact profile 16 of the body 10. For example, the contact profile 16 includes a cylindrical inner surface with an imaginary column shaft that extends vertically and passes through the actuation shaft S. Therefore, the contact profile 26 has a cylindrical outer surface with an imaginary column shaft that extends vertically and passes through the actuation shaft S when the closing element 20 is in the first position.

[0055] In addition, the closing element 20 includes a contact profile 27 that extends into the receiving space 12, and when the closing element 20 is in the first position, the contact profile 27 rests against the contact profile 17 of the connecting portion 11.

[0056] A locking element 50, movably secured to the body 10, is movable relative to the body 10 between a released position and a locked position. In the released position, the locking element 50 allows the closing element 20 to move to a second position; in the locked position, the locking element 50 restricts the closing element 20 from moving out of the first position. The locking element 50 is rotatably mounted about the actuation shaft S. A clamp 52 of the locking element 50, protruding into the receiving space 12, secures the distal portion 28 of the closing element 20 in the locked position. In the released position, a recess 54 of the clamp 52 of the locking element 50 releases the distal portion 28 of the closing element 20 to move the closing element 20 to the second position. The rotation angle of the locking element 50 is substantially 90°. In the end position, the locking mechanism secures the locking element 50 to prevent accidental rotation.

[0057] The fastening portion 60 of the main body 10 is located radially outside the passage opening 62 for the valve stem. The fastening portion 60 is... Figure 1 The center is provided by an internal thread that opens into the opening on the distal side.

[0058] Another fastening portion 80 is located on the side of the clamp valve 2 opposite to the channel opening 62, and is, exemplarily, formed by an internal thread that opens into the opening on the distal side.

[0059] In one example, the body 10, closing element 20, anti-load portion 30, and locking element 50 are made of a corresponding plastic. In another example, the aforementioned components are made of a corresponding metal alloy. In yet another example, the aforementioned components are made of either a metal alloy or plastic.

[0060] Figure 2a and Figure 2b It shows Figure 1 The pinch valve 2 has a closing element 20 in different positions, and the pipe axis extends perpendicular to the plane of the figure.

[0061] The anti-load portion 30 opens in an opening having a diameter 32 that extends perpendicularly to the tube axis, which is smaller than the inner diameter 34 of the anti-load portion 30 that extends perpendicularly to the tube axis.

[0062] The fastening portion 60 of the pinch valve 2 includes a flange 64 in which an internal thread extending parallel to the actuation shaft S is formed.

[0063] The opening angle between the first and second positions of the closing element 20 is limited to a range between 40° and 80°, and more particularly to a range between 50° and 60°. For example, the opening angle is generated between the tilting axis N and the actuation axis S of the closing element 20.

[0064] exist Figure 2b In the first position shown, the locking element 50 rotates out of its released position and into the locked position, such that the concave, curved recess 54 visually defines the opening 18 for the receiving space of the tube portion. This means that, in the locked position, there is a visual perception that the recess 54 defines an imaginary enlarged outer contour of the tube portion.

[0065] Figure 3a and Figure 3b It shows Figure 1 The pinch valve 2 has a closing element 20 in different positions, and the pipe axis extends parallel to the plane of the figure.

[0066] Figure 4A cross-sectional view of a pinch valve 2 without a closing element is shown. The compressor 40 can be replaced without an attached closing element. For this purpose, the compressor 40 is detachably fastened to the distal end of a valve stem 42 extending along the actuation shaft S. At the distal end of the valve stem 42, a circular wire retainer 44 is received on the circumferential side of a circumferential groove. The compressor 40 includes an inner groove in which the circular wire retainer 44 is received. When the compressor 40 is manually pulled, the circular wire retainer 44 retracts and releases the compressor 40.

[0067] The locking element 50 includes an inner groove 55, and a ring 56 disposed in the outer groove of the body 10 engages with the inner groove 55. Therefore, the locking element 50 is forced to rotate about the actuation shaft S.

[0068] Furthermore, the locking element 50 includes an internal locking recess 58 that engages with at least two locking elements 59 extending from the body 10 when the locking element 50 is rotated. The at least two locking elements 59 define a locked position and a released position for the locking element 50.

[0069] Figure 5 A side view of the pinch valve 2 without the closing element 20 is shown. The contact profile 16 for contacting the closing element has an internal columnar contact surface.

[0070] Figure 6a and Figure 6b An example of a pinch valve 2 is shown, in which the closing element 20 is in different positions. The closing element 20 is designed to resemble a drawer and includes a guide portion 602 that is received within a guide portion of a body 10 that houses the guide portion. Thus, the closing element 20 is linearly guided.

[0071] Figure 6a The second position shown facilitates the insertion of the tube portion through the insertion opening 22. Figure 6b The first position of the closing element 20 shown closes the opening 14 of the body 10.

[0072] The locking element 50 can be designed as described in the example above. In another example, the locking element 50 is displaced parallel to the actuation shaft S and locks the closing element 20.

[0073] Figure 7a and Figure 7b An example of a pinch valve 2 is shown, in which the closing element 20 is in different positions. In this example, the closing element 20 and the anti-load portion 30 are designed to be separate and each is movably fixed to the body 10. The closing element 20 is rotatable about the rotation axis R. The anti-load portion 30 is mounted in such a way that it can be pushed into the receiving space 12 through the channel opening of the body 10.

[0074] In one example (not shown), the pinch valve 2 includes multiple anti-load sections, which are arranged spaced apart from each other along the actuation shaft S, particularly at the first position of the closing element 20. Compressors assigned to the respective anti-load sections move along a common actuation shaft S. Of course, the compressor / anti-load section pairs can also be arranged offset from each other. In one example, multiple compressors are driven by a single actuator, wherein the multiple compressors are connected to each other by lateral force transmission sections that extend parallel to but at a distance from the actuation shaft S. Advantageously, multiple pipe sections can thus be operated by a single pinch valve.

[0075] In one example (not shown), multiple closing elements 20 of one or more pinch valves 2 are connected to each other by one or more connecting elements, so that the closing elements 20 can move together between a first position and a second position. Advantageously, multiple closing elements 20 exposed to their respective insertion openings can thus be operated simultaneously.

[0076] Figure 8 It shows Figure 6a and Figure 6b The closing element 20 has different inserts that serve as corresponding anti-load portions 30a, 30b, and 30c of the compressor. The receiving portion 802 of the closing element 20 accommodates one of the anti-load portions 30a, 30b, and 30c.

[0077] Figure 9 Multiple compressor / anti-load pairs 902, 904, and 906 are shown, with the tube central axis T extending perpendicular to the plane of the drawing shown on the left and a cross section along the tube central axis T shown on the right.

[0078] The compressor / anti-load pair 902 includes a hemispherical compressor 40. The anti-load portion 30 includes a generally circular anti-surface 910 opposite to the compressor 40. Starting from the distal side of the anti-load portion toward the openings 912, 914, the receiving channel gradually tapers toward the receiving tube portion of the anti-surface 910.

[0079] The compressor / reverse bearing pair 904 includes a hemispherical compressor 40. The reverse bearing portion 30 includes a receiving channel extending along the tube axis T and following a columnar inner surface.

[0080] The compressor / reverse bearing pair 906 includes a wedge compressor 40 and a wedge reverse bearing portion 30. The compressor 40 and the reverse bearing portion 30 cause a partially cut-off clamping of the tube, meaning that the clamping is generated substantially perpendicular to the tube axis T.

Claims

1. A pinch valve (2), comprising: The main body (10) has a receiving space (12) for the tube portion, and the main body (10) includes a lateral opening (14) leading into the receiving space (12). The anti-load portion (30) for the compressor (40), which moves along the actuation shaft (S); as well as A closing element (20) is movably fastened to the body (10) and is movable relative to the body (10) between a first position and a second position, wherein in the first position the closing element (20) at least partially closes the lateral opening (14) of the body (10), and in the second position the closing element (20) exposes an insertion opening (22) for the tube portion. The locking element (50) movably fastened to the body (10) is movable relative to the body (10) between a released position and a locked position. In the released position, the locking element (50) allows the closing element (20) to move to the second position. In the locked position, the locking element (50) restricts the closing element (20) from moving out of the first position. The locking element (50) is rotatably mounted around the actuation shaft (S), wherein the clamp (52) of the locking element (50) secures the distal portion (28) of the closing element (20) in the locked position, and wherein the recess (54) of the clamp (52) of the locking element (50) in the released position releases the distal portion (28) of the closing element (20) to move the closing element (20) to the second position.

2. The pinch valve (2) according to claim 1, wherein, The closing element (20) is fastened to the body (10) so that it can rotate about the rotation axis (R).

3. The pinch valve (2) according to claim 2, wherein, The rotation axis (R) extends perpendicular to the actuation axis (S) and is at a certain distance from the actuation axis (S).

4. The pinch valve (2) according to claim 2, wherein, The opening angle between the first and second positions of the closing element (20) is limited to a range between 40° and 80°, and particularly to a range between 50° and 60°.

5. The pinch valve (2) according to claim 1, wherein, The closing element (20) is provided with the anti-load portion (30).

6. The pinch valve (2) according to claim 1, wherein, The closing element (20) and / or the anti-load portion (30) include at least one stop region (24) for restricting the movement of the compressor (40) along the actuation shaft (S) and the anti-load portion (30).

7. The pinch valve (2) according to claim 1, wherein, The closing element (20) is detachably connected to the body (10).

8. The pinch valve (2) according to claim 1, wherein, The anti-load portion (30) and the closing element (20) are integrally formed.

9. The pinch valve (2) according to claim 1, wherein, The anti-load portion (30) is detachably connected to the closing element (20).

10. The pinch valve (2) according to claim 1, wherein, When the closing element (20) is in the first position, the contact profile (26) of the closing element (20) opposite to the anti-bearing portion (30) abuts against the inner contact profile (16) of the body (10).

11. The pinch valve (2) according to claim 1, wherein, The compressor (40) is detachably fastened to a valve stem (42) extending along the actuation shaft (S).

12. The pinch valve (2) according to claim 1, wherein, The fastening portion (60) of the body (10) is located radially outside the channel opening (62) for the valve stem (42).

13. The pinch valve (2) according to claim 1, wherein, The anti-load portion (30) is opened in the opening, and the diameter (32) of the opening is smaller than the inner diameter (34) of the anti-load portion (30).

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