Fluid controller

Abstract

According to the fluid controller, a first blocking wall is located on the peripheral side of a first end, a sealing part of a sealing piece is located on the peripheral side of the first blocking wall and limits the sealing piece to move towards the center of a fluid channel, the first blocking wall is provided with a notch part along the peripheral side of the first end, and the sealing part comprises a first part corresponding to the notch part; the supporting part and the first part are fixedly arranged or are of an integrated structure, that is, the supporting part effectively limits the first part corresponding to the notch part to move towards the center of the fluid channel, and the reliability of the sealing performance of the sealing piece is ensured.

Description

Technical Field

[0001] The present invention relates to the field of pneumatic components, and in particular to a fluid controller. Background Art

[0002] In the pneumatics field, fluid controllers such as valve islands and integrated valves are widely used. Their core component is a modular fluid distributor. This distributor is constructed with fluid channels and equipped with seals around the channel ports to ensure stable fluid transmission. Furthermore, retaining walls are required around the channel ports to prevent the seals from approaching the channel ports.

[0003] In one technology, due to limited space, it is difficult to set a complete and standard retaining wall, which makes it very easy for the seal to be dislocated from the predetermined assembly position and slide into the fluid channel, causing the sealing performance to fail. Summary of the Invention

[0004] The present invention provides a fluid controller with higher sealing reliability.

[0005] A fluid controller includes a distributor module and a seal, the distributor module has a fluid channel, the distributor module has a first wall and a first baffle wall, the first end of the fluid channel is located on the first wall, the first baffle wall protrudes from the first wall, and the first baffle wall is located on the outer peripheral side of the first end, the sealing portion of the seal is located on the outer peripheral side of the first baffle wall, the first baffle wall has a notch portion along the outer peripheral side of the first end, the sealing portion includes a first part corresponding to the notch portion, and the seal includes a supporting portion, which is fixedly arranged with the first part or is an integral structure.

[0006] In the fluid controller of the present application, the first baffle wall is located on the outer peripheral side of the first end portion, and the sealing portion of the seal is located on the outer peripheral side of the first baffle wall, that is, the first baffle wall limits the displacement of the seal toward the center of the fluid channel, the first baffle wall has a notch portion along the outer peripheral side of the first end portion, the sealing portion includes a first part corresponding to the notch portion, and the support portion and the first part are fixedly arranged or are an integral structure, that is, the support portion effectively limits the displacement of the first part corresponding to the notch portion toward the center of the fluid channel, thereby ensuring the reliability of the sealing performance of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is an overall exploded schematic diagram of a fluid controller provided by the present invention; Figure 2 This is a schematic overall cross-sectional view of a fluid controller provided by the present invention; Figure 3 This is a schematic diagram of the connection between a distributor module and a control valve of a fluid controller provided by the present invention; Figure 4 yes Figure 3 A magnified schematic diagram of point A in the middle; Figure 5 This is a three-dimensional schematic diagram of a sealing member of a fluid controller provided by the present invention; Figure 6 yes Figure 5 A magnified schematic diagram of point B in the middle; Figure 7 This is a schematic diagram of the connection between a distributor module and a sealing member according to an embodiment of a fluid controller provided by the present invention; Figure 8 yes Figure 7 Enlarged schematic diagram of point C in the middle; Figure 9 1 is a perspective schematic diagram of a distributor module of an embodiment of a fluid controller provided by the present invention; Figure 10 yes Figure 9 The enlarged schematic diagram of point D in the middle; Figure 11 This is a structural diagram of a distributor module of a fluid controller provided by the present invention; Figure 12 yes Figure 11 RR cross-sectional diagram; Figure 13 yes Figure 12 The enlarged schematic diagram of point E in the middle; Figure 14 It is a schematic diagram of the connection between the sealing portion and the supporting portion of an embodiment provided by the present invention.

[0008] Reference numerals: 1. Distributor module; 11. First wall; 12. First retaining wall; 121. Notch; 122. End A; 123. End B; 13. Second retaining wall; 14. Boss; 15. Joint surface; 16. Mounting surface; 161. Sealing groove; 2. Seals; 21. Sealing part; 211, Part I; 211a, first rib; 211b, second rib; 211c, third rib; 22. Support portion; 221. Limiting hole; 3. Control valve; 4. Fluid channel; 41. Channel body; 42. Mounting groove; 421. Opening; 43. First end portion; 44. Second wall; 5. Bolts; 6. Nut; 7. Sealing components; 8. The first direction. DETAILED DESCRIPTION

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] refer to Figure 1 A fluid controller includes a distributor module 1, a seal 2, and a control valve 3. The number of distributor modules 1 is at least two. Along the assembly direction of the at least two distributor modules 1, the distributor module 1 has a joint surface 15. In the assembled state, the joint surfaces 15 of the two distributor modules 1 are in contact with each other, and the seal 2 is limited between the two distributor modules 1. The distributor module 1 has a mounting surface 16 and a sealing groove 161 recessed in the mounting surface 16. The sealing groove 161 is embedded with a corresponding sealing member 7. The extension surface of the mounting surface 16 and the extension surface of the joint surface 15 intersect. The control valve 3 is integrated with the mounting surface 16. refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 , the distributor module 1 has a fluid channel 4, reference Figure 1 and Figure 7 , defining the extending direction of the fluid channel 4 as the first direction 8, the first direction 8 may be the arrangement direction of at least two distributor modules 1, referring to Figure 1 、 Figure 3 、 Figure 4 、 Figure 10 and Figure 11 The distributor module 1 has a first wall 11 and a first retaining wall 12 . The first end 43 of the fluid channel 4 is located on the first wall 11 . The first retaining wall 12 protrudes from the first wall 11 and is located on the outer periphery of the first end 43 .

[0011] refer to Figure 9 and Figure 10 Generally speaking, it is necessary to process a complete and standard first retaining wall 12 on the first wall 11 of the distributor module 1 (the complete and standard first retaining wall 12 should surround the outer circumference of the first end portion 43 to form a closed ring), refer to Figure 7 and Figure 8 The sealing portion 21 of the sealing member 2 is located on the outer peripheral side of the first retaining wall 12 . The design of the first retaining wall 12 limits the displacement of the sealing member 2 toward the center of the fluid channel 4 .

[0012] refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 11 and Figure 12 In one technique, the fluid channel 4 includes a channel main body 41 and a mounting groove 42, referring to Figure 1 The channel main body portion 41 extends along the first direction 8 and passes through the first end portion 43, and the mounting groove portion 42 extends along the first direction 8 and passes through the first end portion 43. Figure 2 , a nut 6 is provided in the mounting groove portion 42, a bolt 5 is passed through the control valve 3, the bolt 5 is connected with the nut 6, so that the control valve 3 is fixedly connected to the distributor module 1, specifically, the mounting groove portion 42 has a groove bottom wall and two groove side walls arranged oppositely, refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 11 and Figure 12 The fluid channel 4 has a second wall 44, which is the bottom wall of the mounting groove portion 42. Along the arrangement direction of the mounting groove portion 42 and the channel main body portion 41, the mounting groove portion 42 is closer to the mounting surface 16 than the channel main body portion 41. More specifically, with reference to Figure 4 The mounting groove portion 42 has an opening portion 421, and the opening portion 421 is located between the two groove side walls. The mounting groove portion 42 is connected to the channel main body portion 41 through the opening portion 421. Compared with the opening portion 421, the groove bottom wall is closer to the mounting surface 16. Due to the arrangement of the above-mentioned mounting groove portion 42, the distance from the second wall 44 to the mounting surface 16 is small, and it is difficult to reserve sufficient placement space for the first retaining wall 12 and the sealing portion 21, that is, it is difficult to arrange the first retaining wall 12 as expected between the second wall 44 and the mounting surface 16. In addition, in this technology, reference is made to Figure 1 、 Figure 10 、 Figure 12 and Figure 13 The first wall 11 is recessed in the joint surface 15, and the mounting surface 16 has a sealing groove 161 recessed in the mounting surface 16. Figure 13 , define the minimum distance from the side wall of the sealing groove 161 to the joint surface 15 as L1, and define the depth of the first wall 11 recessed in the joint surface 15 as L2; In one embodiment, when L1≤L2, if the first wall 11 excessively extends in the direction toward the mounting surface 16, the first wall 11 is likely to interfere with the sealing groove 161, and the first wall 11 may penetrate the sealing groove 161, which may cause the seal to fail. In other embodiments, L1>L2 and 0<L1-L2≤1.5mm. For example, when L1-L2=1.5mm, while theoretically preventing the first wall 11 from directly intersecting the sealing groove 161 as it extends toward the mounting surface 16, since the first wall 11 is recessed in the joint surface 15, if the first wall 11 overextends toward the mounting surface 16, the difference between L1 and L2 will only be 1.5mm, making it difficult to meet the basic requirements of the first wall 11 molding process (generally, to ensure processing quality and process feasibility, the first wall 11 molding process must meet L1-L2>1.5mm). Even if the first wall 11 can be molded, the sealing groove 161 on the mounting surface 16 will still have insufficient structural strength due to its excessively thin wall thickness, making it difficult to achieve the expected performance and service life.

[0013] It can be seen that the fluid controller provided by the present invention has a small distance between the second wall 44 and the mounting surface 16, and is constrained by the sealing groove 161, so that the first wall 11 is restricted in extending in the direction toward the mounting surface 16, resulting in difficulty in setting the first retaining wall 12 as expected between the second wall 44 and the mounting surface 16. To address this technical problem, the first retaining wall 12 of the present invention has a notch portion 121 along the outer peripheral side of the first end portion 43. Specifically, referring to Figure 9 and Figure 10 The notch 121 is located on the outer peripheral side of the mounting groove 42 . The notch 121 is used to prevent the first wall 11 from excessively extending toward the mounting surface 16 , thereby preventing interference between the first wall 11 and the sealing groove 161 .

[0014] However, the presence of the notch 121 may cause the seal 2 to lose its support. Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 as well as Figure 14 The sealing portion 21 of the seal 2 includes a first portion 211 corresponding to the notch portion 121 (i.e., the notch portion 121 causes the first portion 211 to lose support). During installation or use, the seal 2 is prone to displacement toward the center of the fluid channel 4, making it easy for the seal 2 to slide into the fluid channel 4, causing the sealing performance to fail. To avoid this situation, refer to Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 as well as Figure 14 The seal 2 of the present invention includes a support portion 22, and the support portion 22 is fixedly arranged with the first portion 211 or is an integral structure. If so, refer to Figure 7 and Figure 8The support portion 22 contacts the first baffle wall 12, and the first baffle wall 12 is located on the outer peripheral side of the channel main body 41; the first baffle wall 12 supports the support portion 22. By designing the support portion 22, the missing limit support of the notch portion 121 is compensated, and by providing additional supporting force, the displacement of the seal 2 toward the center of the fluid channel 4 is effectively limited, thereby ensuring the reliability of the sealing performance of the seal 2. Preferably, the support portion 22 also contacts the first wall 11 to avoid leakage between the two distributor modules 1.

[0015] Preferably, reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 and Figure 11 The distributor module 1 has at least one boss 14 protruding from the first wall 11, referring to Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The support portion 22 has a limiting hole 221 adapted to the boss 14, refer to Figure 7 and Figure 8 The boss 14 is located in the limiting hole 221. The boss 14 limits at least one degree of freedom of the support part 22 to ensure the position stability of the support part 22 in the working state. The shape of the boss 14 can be diversified, including but not limited to rectangular prism, cylindrical or other shapes to adapt to different application requirements and fluid characteristics. The shape and size of the limiting hole 221 match the boss 14 to ensure stable cooperation between the two. During assembly, the boss 14 passes through or is embedded in the limiting hole 221 to form a cooperation structure between the boss 14 and the limiting hole 221, which simplifies the assembly process, eliminates the need for additional positioning tooling, and reduces the risk of assembly errors.

[0016] refer to Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 as well as Figure 14 Along the circumference of the first end portion 43 , the first retaining wall 12 has two ends, which are defined as end portion A122 and end portion B123 .

[0017] In one embodiment, the support portion 22 is located between the end portion A122 and the end portion B123. Specifically, a gap is formed between the end portion A122 and the end portion B123, and at least a portion of the support portion 22 is located in the gap.

[0018] In another embodiment, reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 as well as Figure 14 The distributor module 1 has a second retaining wall 13, which extends along the outer circumference of the first end portion 43. Part of the sealing portion 21 is limited between the first retaining wall 12 and the second retaining wall 13. The first retaining wall 12 and the second retaining wall 13 constrain the displacement of the sealing portion 21, thereby ensuring the positional stability of the sealing portion 21 in the working state. Along the circumference of the first end portion 43 , the first retaining wall 12 has two ends, defined as end A122 and end B123 , respectively. The first portion 211 and the support portion 22 are located between the second retaining wall 13 and at least one end of the first retaining wall 12 .

[0019] In one embodiment, reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 , the notch 121 is U-shaped, refer to Figure 8 The first portion 211 and the support portion 22 are limited between the second retaining wall 13, the end portion A122 and the end portion B123 to limit the displacement of the first portion 211 and the support portion 22. The support portion 22 supports the first portion 211 to prevent the first portion 211 from displacing toward the center of the fluid channel 4; Figure 5-Figure 8 The sealing portion 21 is or is approximately in the shape of a rib, and the supporting portion 22 is or is approximately in the shape of a plate, providing a support basis for the sealing portion 21. The first part 211 includes a first rib 211a, a second rib 211b and a third rib 211c. The second rib 211b connects the first rib 211a and the third rib 211c. The first rib 211a, the second rib 211b and the third rib 211c cooperate to form a U shape.

[0020] In another embodiment, the notch 121 is L-shaped. Figure 14 The first portion 211 and the support portion 22 are limited between the second retaining wall 13 and the end portion A122 to limit the displacement of the first portion 211 and the support portion 22. The support portion 22 supports the first portion 211 to prevent the first portion 211 from displacing toward the center of the fluid channel 4. Of course, the first portion 211 and the support portion 22 can also be limited between the second retaining wall 13 and the end portion B123; Figure 14 The sealing portion 21 is or is approximately in the shape of a rib, and the supporting portion 22 is or is approximately in the shape of a plate, providing a support basis for the sealing portion 21. The first part 211 includes a first rib 211a and a second rib 211b. The extension line of the first rib 211a and the extension line of the second rib 211b intersect. Specifically, the first rib 211a and the second rib 211b cooperate to form an L shape.

[0021] Preferably, the support portion 22 and the sealing portion 21 are made of the same material, and the sealing portion 21 and the support portion 22 are integrally formed. Specifically, in this embodiment, the support portion 22 and the sealing portion 21 are both made of rubber material, specifically nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), fluororubber (FKM) or silicone, etc. The support portion 22 and the sealing portion 21 are processed and formed at one time through a compression molding or injection molding process to ensure the connection reliability between the sealing portion 21 and the support portion 22.

[0022] As another embodiment, the hardness of the support portion 22 is greater than the hardness of the sealing portion 21, and the support portion 22 and the sealing portion 21 are insert-molded. When it is necessary to take into account both the support strength and the sealing performance, the support portion 22 and the sealing portion 21 can be insert-molded with different materials. The high hardness of the support portion 22 provides structural rigidity to prevent deformation, and at the same time, the sealing portion 21 realizes sealing with the contact surface of the distributor module 1; for example, the support portion 22 is made of plastic material, and the sealing portion 21 is made of rubber material, or the support portion 22 is made of metal material, and the metal material can be stainless steel, aluminum alloy, etc., and the sealing portion 21 is made of rubber material; specifically, the support portion 22 is first processed as an insert, and then the rubber material is wrapped on the surface of the support portion 22 by injection molding or molding to form the sealing portion 21.

[0023] The principles and implementation methods of the present invention have been described above using specific examples. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A fluid controller comprising a distributor module (1) and a sealing member (2), characterized in that: The distributor module (1) has a fluid channel (4), the distributor module (1) has a first wall (11) and a first baffle wall (12), the first end portion (43) of the fluid channel (4) is located on the first wall (11), the first baffle wall (12) protrudes from the first wall (11), and the first baffle wall (12) is located on the outer peripheral side of the first end portion (43), the sealing portion (21) of the sealing member (2) is located on the outer peripheral side of the first baffle wall (12), the first baffle wall (12) has a notch portion (121) along the outer peripheral side of the first end portion (43), the sealing portion (21) includes a first portion (211) corresponding to the notch portion (121), and the sealing member (2) includes a supporting portion (22), and the supporting portion (22) and the first portion (211) are fixedly arranged or form an integral structure.

2. A fluid controller according to claim 1, characterized in that: The supporting portion (22) is in contact with the first blocking wall (12).

3. A fluid controller according to claim 2, characterized in that: Along the circumference of the first end portion (43), the first retaining wall (12) has two ends, and the support portion (22) is located between the two ends of the first retaining wall (12).

4. A fluid controller according to claim 2, characterized in that: The distributor module (1) has a second baffle wall (13), the second baffle wall (13) extends along the outer circumference of the first end portion (43), and a portion of the sealing portion (21) is located between the first baffle wall (12) and the second baffle wall (13); along the circumference of the first end portion (43), the first baffle wall (12) has two ends, and the first portion (211) and the support portion (22) are located between the second baffle wall (13) and at least one end of the first baffle wall (12).

5. A fluid controller according to any one of claims 1 to 4, characterized in that: The support portion (22) is in contact with the first wall (11).

6. A fluid controller according to any one of claims 1 to 4, characterized in that: The distributor module (1) has at least one boss (14) protruding from the first wall (11); the support portion (22) has a limiting hole (221) adapted to the boss (14); and the boss (14) is located in the limiting hole (221).

7. A fluid controller according to any one of claims 1 to 6, characterized in that: The number of the distributor modules (1) is at least two. Along the assembly direction of at least two of the distributor modules (1), the distributor module (1) has a joint surface (15), the first wall (11) is recessed in the joint surface (15), the distributor module (1) has a mounting surface (16) and a sealing groove (161) recessed in the mounting surface (16), the extension surface of the mounting surface (16) and the extension surface of the joint surface (15) intersect, the minimum distance between the groove side wall of the sealing groove (161) and the joint surface (15) is L1, and the depth of the first wall (11) recessed in the joint surface (15) is L2; The L1≤L2; or L1>L2, and 0<L1-L2≤1.5mm.

8. A fluid controller according to any one of claims 1 to 7, characterized in that: The sealing portion (21) is or is approximately rib-shaped, the supporting portion (22) is or is approximately plate-shaped, the first portion (211) comprises a first rib (211a) and a second rib (211b), and an extension line of the first rib (211a) and an extension line of the second rib (211b) intersect.

9. A fluid controller according to any one of claims 1 to 7, characterized in that: The sealing portion (21) is or is approximately rib-shaped, the supporting portion (22) is or is approximately plate-shaped, the first portion (211) comprises a first rib (211a), a second rib (211b) and a third rib (211c), and the second rib (211b) connects the first rib (211a) and the third rib (211c).

10. A fluid controller according to any one of claims 1 to 7, characterized in that: The supporting portion (22) and the sealing portion (21) are made of the same material, and the sealing portion (21) and the supporting portion (22) are integrally formed; Or the hardness of the supporting portion (22) is greater than the hardness of the sealing portion (21), and the supporting portion (22) and the sealing portion (21) are insert-molded.

Images