Diaphragm valve

Abstract

A diaphragm valve allows a diaphragm to move along a chamber to block a passage. The channel is composed of four sections. The second section is curved from the first section to the chamber. The third section is curved from the chamber to the fourth section. One end of the second section has a shape conforming to the contours of the septum to be blocked by the septum when contacted by the septum, and the septum has a conical protrusion to direct flow in the chamber when moved away.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, in particular to a diaphragm valve for controlling chemical solution, water and other fluids. BACKGROUND

[0002] In many manufacturing processes, such as when a pharmaceutical factory produces medicine, or when a semiconductor factory coats the surface of a wafer to form a thin film of uniform thickness, a controlled amount of chemical solution or water is required. Therefore, precise valves are required in many industries. However, valves installed in flow channels will have an impact on the fluid, resulting in pressure loss. At the same time, the valve needs to be able to smoothly and completely block the fluid to achieve precise control. Therefore, a valve that can both reduce the pressure loss of the liquid flowing through the valve and smoothly and completely block the fluid is needed to achieve precise control. SUMMARY

[0003] The utility model discloses a diaphragm valve with optimal flow streamline and better blocking effect.

[0004] One aspect of the utility model provides a diaphragm valve comprising a controller and a main body. The controller comprises a knob and a diaphragm, the diaphragm being connected to and driven by the knob. The main body comprises an opening, a chamber and a channel. The opening is covered by the controller. The chamber contains the diaphragm and allows the diaphragm to move along the centerline of the chamber. The channel comprises a first segment, a second segment, a third segment and a fourth segment. One end of the second segment is connected to the inlet of the chamber. The outlet of the chamber is connected to one end of the third segment. The second segment is curved from the first segment to the chamber, and the third segment is curved from the chamber to the fourth segment. An annular protrusion protrudes from the inner wall of one end of the second segment, wherein the shape of the annular protrusion matches the profile of the diaphragm in close proximity to be blocked by the diaphragm when the diaphragm is in contact.

[0005] Another aspect of the utility model provides a diaphragm valve comprising a controller and a main body. The controller comprises a knob and a diaphragm, the diaphragm being connected to and driven by the knob. The main body comprises an opening, a chamber and a channel. The opening is covered by the controller. The chamber contains the diaphragm and allows the diaphragm to move along the centerline of the chamber. The channel comprises a first segment, a second segment, a third segment and a fourth segment. One end of the second segment is connected to the inlet of the chamber. The outlet of the chamber is connected to one end of the third segment. The second segment is curved from the first segment to the chamber, and the third segment is curved from the chamber to the fourth segment. The diaphragm has a conical protrusion to guide the flow.

[0006] Another aspect of the present utility model provides a diaphragm valve including a controller and a main body. The controller includes a knob and a diaphragm. The diaphragm is connected to the knob and is driven by the knob. The main body includes an opening, a chamber and a channel. The opening is covered by the controller. The chamber contains the diaphragm and allows the diaphragm to move along a center line of the chamber. The channel includes a first segment, a second segment, a third segment and a fourth segment. One end of the second segment is connected to an inlet of the chamber. An outlet of the chamber is connected to one end of the third segment. The second segment is bent from the first segment to the chamber, and the third segment is bent from the chamber to the fourth segment. One end of the second segment has a shape that matches a profile of the diaphragm to be blocked by the diaphragm when contacted by the diaphragm. An included angle between the center line of the chamber and a perpendicular line of the first segment of the channel is in a range of 20 to 60 degrees.

[0007] The above general summary of the utility model features and advantages is better understood, the utility model embodiments are described below, and form the protection object of the utility model claims. The person skilled in the present art should understand that the concept and specific embodiments of the utility model can be modified or designed into other structures or methods achieving the same purpose as the utility model, and such equivalent structures do not deviate from the spirit and scope of the utility model set forth in the claims. BRIEF DESCRIPTION OF DRAWINGS

[0008] A more complete understanding of the utility model can be obtained by reference to the following description taken in connection with the accompanying drawings, wherein:

[0009] Figure 1 is a perspective view of the diaphragm valve according to an embodiment of the utility model;

[0010] Figure 2 is Figure 1 a perspective view of the controller of the diaphragm valve of

[0011] Figure 3 is Figure 1 a perspective view of the main body of the diaphragm valve of

[0012] Figure 4 is a cross-sectional view of the main body with a diaphragm according to an embodiment of the utility model;

[0013] Figure 5 is a cross-sectional view of the main body with a diaphragm according to another embodiment of the utility model;

[0014] Figure 6 is Figure 5 an enlarged view of the structure of area A of the main body cross-sectional view of

[0015] Figure 7 is Figure 5 an enlarged view of the structure of area B of the main body cross-sectional view of

[0016] Figure 8 is a side view of a diaphragm according to an embodiment of Figure 5

[0017] Figure 9 is a perspective view of a diaphragm according to an embodiment of Figure 5

[0018] Figure 10 is a cross-sectional view of a diaphragm according to an embodiment of Figure 8 and Figure 9

[0019] Figure 11 is a perspective view of a diaphragm valve according to another embodiment of the present utility model; and

[0020] Figure 12 is a perspective view of a controller of a diaphragm valve. Figure 11

[0021] Explanation of symbols:

[0022] 10: diaphragm valve

[0023] 10a: diaphragm valve

[0024] 100: controller

[0025] 100a: controller

[0026] 120: knob

[0027] 120a: cylinder

[0028] 126: threaded sleeve

[0029] 136: flange

[0030] 136a: flange

[0031] 138: gasket

[0032] 140: diaphragm

[0033] 141: notch

[0034] 142: conical protrusion

[0035] 144: annular groove

[0036] 145: flat area

[0037] 146: flexible ring

[0038] 148: groove ring

[0039] 152: transparent cover

[0040] 154: pneumatic outlet

[0041] ​​​​156: pneumatic inlet

[0042] 200: main body

[0043] 210: opening

[0044] 220: reinforcing rib

[0045] 222: annular protrusion

[0046] 224: diaphragm mount

[0047] 226: solenoid

[0048] 240a: solenoid

[0049] 240b: solenoid

[0050] 260a: inlet

[0051] 260b: outlet

[0052] 280: channel

[0053] 281: first section

[0054] 282: second section

[0055] 283: third section

[0056] 284: fourth section

[0057] 285: chamber

[0058] 286: one end of the second section

[0059] 287: one end of the third section

[0060] 290: arrow

[0061] 340a: line connector

[0062] 340b: line connector

[0063] 360a: line

[0064] 360b: line

[0065] A: area

[0066] B: area

[0067] C1: center line

[0068] C2: center line

[0069] C3: center line

[0070] V: vortex

[0071] S: liquid flow

[0072] θ: angle DETAILED DESCRIPTION

[0073] A number of different embodiments are provided below for implementing different features of the present application. Drawing references can be repeated throughout the embodiments, but do not necessarily mean that a feature of one embodiment is applicable to another embodiment, even if they have the same reference. It should be understood that although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections are not limited by these terms. Instead, these terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. The terms used herein are only for describing specific embodiments and are not intended to limit the present application. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of other features, integers, steps, operations, elements, components, or groups thereof.

[0074] The valve according to embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0075] Figure 1 is a perspective view of a diaphragm valve 10 according to embodiments of the present application. Figure 2 is Figure 1 is a perspective view of a controller 100 of the diaphragm valve 10 in Figure 3 is Figure 1 is a perspective view of a main body 200 of the diaphragm valve 10 in Figure 1 As shown in Figure 2 As shown in Figure 3 As shown in Figure 1 As shown in

[0076] As shown in Figure 1 and Figure 3As shown, the diaphragm valve 10 is installed between the pipelines 360a, 360b. The pipelines 360a, 360b are connected to the inlet 260a and the outlet 260b of the diaphragm valve 10, respectively, while the pipeline connectors 340a, 340b are installed in the solenoids 240a, 240b, respectively. In addition, the reinforcing ribs 220 reinforce the structure of the chamber 285, and the arrows 290 shown on the side indicate the direction of the flow.

[0077] Figure 4 and Figure 5 is a sectional view of the body and the diaphragm according to an embodiment of the present application. The chamber 285 accommodates the diaphragm 140 and allows the diaphragm 140 to move along the center line C2 of the chamber 285. The passage 280 includes a first section 281, a second section 282, a third section 283, and a fourth section 284. One end 286 of the second section 284 is connected to the inlet of the chamber 285, and one end 286 of the second section 282 is located in a plane perpendicular to the center line C2 of the chamber 285. The outlet of the chamber 285 is connected to one end 287 of the third section 283. The second section 282 is bent from the first section 281 toward the chamber 285, and the third section 283 is bent from the chamber 285 toward the fourth section 284. The direction of the liquid flow S in the second section 282 is turned from the center line C1 along the first section 281 to the center line C2 of the chamber 285. In addition, the liquid flow S in the third section 283 is turned from the chamber 285 to become the center line C3 along the fourth section 284.

[0078] Referring to Figure 4 and Figure 5 , the included angle θ between the center line C2 of the chamber 285 and the perpendicular line of the first section 281 of the passage 280 is in the range of about 20 to 60 degrees. In a preferred embodiment of the present application, when the included angle θ between the center line C2 of the chamber 285 and the perpendicular line of the first section 281 of the passage is 34 to 36 degrees, the pressure loss of the liquid flowing through the diaphragm valve 10 is minimized. In addition, the diaphragm 140 has a flexible ring 146 and a groove ring 148. The flexible ring 146 is used to adaptively separate the fluid in the chamber 285 from the air, and the groove ring 148 is used to engage the diaphragm mounting seat 224.

[0079] Figure 4 The embodiment shown has a flat surface at the bottom of the diaphragm 140, and the space between the diaphragm 140 and the flow path allows the generation of a vortex V. However, the vortex V affects the flow. Therefore, Figure 5 Another embodiment shown has a conical protrusion 142 at the bottom of the diaphragm 140 to eliminate the space for generating the vortex V. That is, the diaphragm 140 has a conical protrusion 142 to guide the flow to eliminate the vortex V.

[0080] Figure 6 is an enlarged view of the detailed structure in the area A of the sectional view of the body of Figure 5 ,Figure 7 is an enlarged view of the detailed structure in region B of the main body cross-sectional view of Figure 5 Figure 6 and Figure 7 As shown in Figs. 22 and 23, the annular protrusion 222 protrudes from the inner wall of one end of the second section 282, wherein the annular protrusion 222 has a shape that fits the profile of the diaphragm 140 and can be blocked by the diaphragm 140 when the diaphragm 140 moves to contact the one end 286 of the second section 282. In a preferred embodiment of the present application, the annular groove 144 on the diaphragm 140 can engage the annular protrusion 222 when the diaphragm 140 moves to contact the one end 286 of the second section 282.

[0081] Figure 8 is a side view of the diaphragm 140 according to an embodiment of Figure 5 is a perspective view of the diaphragm 140 according to an embodiment of Figure 9 Figure 5 Figure 10 is a cross-sectional view of the diaphragm 140 according to an embodiment of Figure 8 and Figure 9 In a preferred embodiment of the present application, the flat region 145 surrounds the conical protrusion 142. In a preferred embodiment of the present application, the annular groove 144 is located on the flat region 145, wherein the annular groove 144 fits the annular protrusion 222. In addition, the diaphragm 140 has the notch 141 to accommodate the device connected to the knob 120, as shown in Fig. 21. Figures 8-10 Figure 10 Figure 2 is a perspective view of the diaphragm valve 10a according to another embodiment of the present application.

[0082] Figure 11 is a perspective view of the diaphragm valve 10a according to another embodiment of the present application. Figure 12 is a perspective view of the controller 100a of the diaphragm valve 10a in Figure 11 As an alternative embodiment, the controller 100 of Figure 2 may be replaced by the pneumatic controller 100a shown in Fig. 24. As shown in Fig. 24, the diaphragm valve 10a comprises the controller 100a and the main body 200. As shown in Fig. 25, the controller 100a comprises the cylinder 120a and the diaphragm 140. Air is pumped and discharged via the pneumatic outlet 154 and the pneumatic inlet 156 to drive the diaphragm 140. Figure 12 Figure 11 Figure 12

[0083] In summary, the diaphragm valve according to the embodiments of the present application can precisely and accurately control fluid, which is beneficial for use in, for example, semiconductor production lines or various chemical production lines.

[0084] ​​​​​​​​While the present application and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims. For example, many of the processes discussed above can be implemented in different methodologies and replaced by other processes or combinations thereof. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As such, other devices, processes, compositions, means, methods and steps not expressly discussed herein but which are a part of the scope of the present application are intended to be included within the scope of the claims.

Claims

1. A diaphragm valve, characterized in that: include: a controller including a diaphragm; and A subject, including: an opening covered by the controller; a chamber that accommodates the diaphragm for movement therein; a channel comprising: a first section, a second section, a third section, and a fourth section, wherein one end of the second section is connected to an inlet of the chamber, an outlet of the chamber is connected to one end of the third section, the second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section; and An annular protrusion protrudes from an inner wall of the end of the second section, wherein the annular protrusion has a shape that matches a contour of the diaphragm so as to be blocked by the diaphragm when the diaphragm contacts the end of the second section.

2. The diaphragm valve according to claim 1, wherein Also included is a conical protrusion on the diaphragm to direct flow.

3. The diaphragm valve according to claim 1, wherein Also included is an annular groove on the diaphragm to engage the annular protrusion.

4. The diaphragm valve according to claim 1, wherein Also includes: a conical protrusion located on the diaphragm; a flat area surrounding the conical protrusion; as well as An annular groove is located on the flat area, wherein the annular groove matches the annular protrusion.

5. A diaphragm valve, characterized in that: include: a controller including a diaphragm; and A subject, including: an opening covered by the controller; a chamber that accommodates the diaphragm for movement therein; a channel comprising: a first section, a second section, a third section, and a fourth section, wherein one end of the second section is connected to an inlet of the chamber, an outlet of the chamber is connected to one end of the third section, the second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section; and A conical protrusion is located on the diaphragm to guide the flow.

6. The diaphragm valve according to claim 5, wherein: The invention also includes an annular protrusion protruding from an inner wall of the end of the second section, wherein the annular protrusion has a shape that matches a contour of the diaphragm so as to be blocked by the diaphragm when the diaphragm contacts the end of the second section.

7. The diaphragm valve according to claim 6, wherein: Also included is an annular groove on the diaphragm to engage the annular protrusion.

8. The diaphragm valve according to claim 6, wherein: The invention also includes a flat area surrounding the conical protrusion, and an annular groove located on the flat area, wherein the annular groove matches the annular protrusion.

9. A diaphragm valve, characterized in that: include: a controller including a diaphragm; and A subject, including: an opening covered by the controller; a chamber that accommodates the diaphragm for movement therein; A channel comprises: a first section, a second section, a third section, and a fourth section, wherein one end of the second section is connected to an inlet of the chamber, an outlet of the chamber is connected to one end of the third section, the second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section. wherein the end of the second section has a shape that matches a contour of the diaphragm so as to be blocked by the diaphragm when the diaphragm contacts the end of the second section, and Wherein, an angle between a center line of the chamber and a vertical line of the first section of the channel is in a range of 20 to 60 degrees.

10. The diaphragm valve according to claim 9, wherein The angle between the center line of the chamber and the vertical line of the first section of the channel is 34 to 36 degrees.

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