Valve

Abstract

The valve comprises a shell, a valve element and a sealing piece, the shell is provided with an inner cavity and at least two communication ports, and at least part of the valve element and at least part of the sealing piece are located in the inner cavity; in the radial direction of the valve element, the sealing piece is located between the valve element and the wall corresponding to the inner cavity, one of the peripheral side of the sealing piece and the wall corresponding to the inner cavity is provided with a limiting flange, and the other one of the peripheral side of the sealing piece and the wall corresponding to the inner cavity is provided with a limiting groove. At least part of the limiting flange is located in the limiting groove. Due to the fact that one of the peripheral side of the sealing part and the wall corresponding to the inner cavity is provided with the limiting flange, the other one of the peripheral side of the sealing part and the wall corresponding to the inner cavity is provided with the limiting groove, and at least part of the limiting flange is located in the limiting groove, the sealing part is limited through cooperation of the limiting flange and the limiting groove, and the risk that the sealing part deviates is reduced.

Description

Technical Field

[0001] This invention relates to the field of fluid control technology, and in particular to a valve. Background Technology

[0002] In related technologies, multi-way valves include a housing, a valve core, and a seal. The housing has an inner cavity, and the valve core and seal are located in the inner cavity along the radial direction of the inner cavity. The seal is located between the valve core and the corresponding wall of the inner cavity. During the rotation of the valve core, the seal will be displaced, which may lead to the risk of related seal failure. Summary of the Invention

[0003] To solve the aforementioned technical problem of seal misalignment, the following technical solution is provided:

[0004] A valve includes: a housing, a valve core, and a seal. The housing has an inner cavity and at least two communication ports. At least a portion of the valve core and at least a portion of the seal are located in the inner cavity. Along the radial direction of the valve core, the seal is located between the valve core and a corresponding wall of the inner cavity. One of the outer peripheral side of the seal and the corresponding wall of the inner cavity has a limiting flange, and the other outer peripheral side of the seal and the corresponding wall of the inner cavity has a limiting groove. At least a portion of the limiting flange is located in the limiting groove.

[0005] Since one of the outer peripheral side of the seal and the corresponding wall of the inner cavity has a limiting flange, and the other of the outer peripheral side of the seal and the corresponding wall of the inner cavity has a limiting groove, and at least a portion of the limiting flange is located in the limiting groove, the cooperation between the limiting flange and the limiting groove plays a limiting role for the seal, thereby reducing the risk of seal displacement. Attached Figure Description

[0006] Figure 1 This is a perspective view of one embodiment of the present application;

[0007] Figure 2 This is a front view schematic diagram of one embodiment of this application;

[0008] Figure 3 for Figure 2 sectional view along line AA;

[0009] Figure 4 for Figure 3 Enlarged schematic diagram of region B in the middle;

[0010] Figure 5 for Figure 4 Enlarged schematic diagram of region C in the middle;

[0011] Figure 6 This is a perspective view of the sealing element in one embodiment of this application;

[0012] Figure 7 This is a perspective view of the valve core in one embodiment of this application;

[0013] Figure 8 This is a schematic diagram of the limiting flange and the limiting groove in another embodiment of this application.

[0014] Figure label:

[0015] 100. Shell; 101. Inner cavity; 102. Communicating port; 103. Limiting flange; 104. First mating surface; 105. Second mating surface; 108. First radius line; 109. First plane; 110. First connection; 111. Second connection; 112. Third connection; 113. Fourth connection; 114. First straight segment; 115. Second straight segment;

[0016] 1031. First groove; 1032. Second groove; 1033. Fitting groove;

[0017] 200, Seal; 201, Limiting groove; 202, Mating flange; 203, Connection port; 204, First sealing part; 205, Second sealing part; 2011, First mating wall; 2012, Second mating wall;

[0018] 300, valve core; 301, mating rib. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] like Figure 1-7 As shown, a valve includes a housing 100, a valve core 300, and a seal 200. The housing 100 has an inner cavity 101 and at least two communication ports 102. At least a portion of the valve core 300 and at least a portion of the seal 200 are located in the inner cavity 101. The valve core 300 is rotatable to achieve different communication states between the multiple communication ports 102. Along the radial direction of the inner cavity 101, the seal 200 is located between the valve core 300 and the corresponding wall of the inner cavity 101. One of the outer peripheral side of the seal 200 and the corresponding wall of the inner cavity 101 has a limiting flange 103, and the other outer peripheral side of the seal 200 and the corresponding wall of the inner cavity 101 has a limiting groove 201. In this embodiment, the outer peripheral side of the seal 200 has a limiting groove 201, and the wall corresponding to the inner cavity 101 has a limiting flange 103; in some embodiments, the outer peripheral side of the seal 200 has a limiting flange 103, and the wall corresponding to the inner cavity 101 has a limiting groove 201.

[0021] At least a portion of the limiting flange 103 is located in the limiting groove 201; that is, the limiting flange 103 may be partially or entirely located in the limiting groove 201. In this embodiment, the number of limiting grooves 201 is the same as the number of limiting flanges 103, both being at least two. The limiting grooves 201 are evenly distributed along the circumferential direction of the seal 200, and the limiting flanges 103 are evenly distributed along the circumferential direction of the wall corresponding to the inner cavity 101.

[0022] Since one of the walls corresponding to the outer peripheral side of the seal 200 and the inner cavity 101 has a limiting flange 103, and the other wall corresponding to the outer peripheral side of the seal 200 and the inner cavity 101 has a limiting groove 201, and at least a portion of the limiting flange 103 is located in the limiting groove 201, the cooperation between the limiting flange 103 and the limiting groove 201 plays a limiting role for the seal 200, thereby reducing the risk of the seal 200 shifting.

[0023] The limiting flange 103 has a first groove 1031 and a second groove 1032. Along the circumferential direction of the inner cavity 101, the first groove 1031 and the second groove 1032 are located on both sides of the body of the limiting flange 103. The wall corresponding to the limiting groove 201 cooperates with the opening of the first groove 1031 and the second groove 1032. Specifically, the wall corresponding to the limiting groove 201 closes the opening of the first groove 1031 and the second groove 1032.

[0024] Since the wall corresponding to the limiting groove 201 closes the openings of the first groove 1031 and the second groove 1032, the space between the wall corresponding to the limiting groove 201 and the first groove 1031, and the space between the wall corresponding to the limiting groove 201 and the second groove 1032, can form a negative pressure zone. This is beneficial for the seal 200 to fit tightly with the wall corresponding to the inner cavity 101, increasing the reliability of the seal. Since the first groove 1031 and the second groove 1032 are located on both sides of the limiting flange 103 body along the circumferential direction of the inner cavity 101, the negative pressure zone formed between the first groove 1031 and the second groove 1032 and the wall corresponding to the limiting groove 201 can provide a corresponding force along the embedded circumferential side, thereby reducing the risk of the seal 200 shifting along the circumferential direction of the inner cavity 101.

[0025] A first plane 109 is defined, which is perpendicular to the axis of the inner cavity 101. The first plane 109 intersects with the first groove 1031 and the second groove 1032, respectively. On the first plane 109, the two connection points between the wall of the first groove 1031 and the limiting flange body are defined as the first connection point 110 and the second connection point 111, respectively. The two connection points between the wall of the second groove 1032 and the limiting flange body are defined as the third connection point 112 and the fourth connection point 113, respectively. A first radius line 108 is defined for the circumference corresponding to the wall of the inner cavity 101, and the first radius line 108 passes through the limiting flange 103; a first straight line segment 114 and a second straight line segment 115 are defined, the first straight line segment 114 and the second straight line segment 115 are located in the first plane 109, and the first straight line segment 114 passes through the first connection 110 and the second connection 111, and the second straight line segment 115 passes through the third connection 112 and the fourth connection 113. The angle between the first straight line segment 114 and the first radius line 108 is an acute angle (i.e., Figure 5 In the equation (a), the angle between the second line segment 115 and the first radius line 108 is an acute angle (i.e., angle a). Figure 5 (angle b) in the middle.

[0026] Since the angle between the first straight segment 114 and the first radius line 108 is an acute angle, and the angle between the second straight segment 115 and the first radius line 108 is an acute angle, the negative pressure zone formed between the first groove 1031 and the second groove 1032 and the wall corresponding to the limiting groove 201 can simultaneously have radial force and circumferential force along the inner cavity 101. This ensures that the seal 200 fits against the wall corresponding to the inner cavity 101, and also limits the seal 200 in the circumferential direction of the inner cavity 101, reducing the risk of the seal 200 shifting.

[0027] The valve core 300 has a mating rib 301, which protrudes from the body of the valve core 300 in the radial direction and abuts against the sealing member 200. The sealing member 200 has at least one mating flange 202, which protrudes from the inner circumferential side of the sealing member 200. In the circumferential direction of the wall corresponding to the inner cavity 101, at least one mating flange 202 or at least a portion of the mating flange 202 coincides with at least a portion of the wall corresponding to the opening of the first groove 1031, and at least one mating flange 202 or at least a portion of the mating flange 202 coincides with at least a portion of the wall corresponding to the opening of the second groove 1032.

[0028] The mating flange 202 can be in the form of multiple discrete protrusions, or it can be a protruding strip, etc.

[0029] Since at least one mating flange 202 or at least a portion thereof coincides with at least a portion thereof of the wall corresponding to the opening of the first groove 1031 along the circumferential direction of the wall of the inner cavity 101, and at least one mating flange 202 or at least a portion thereof coincides with at least a portion thereof of the wall corresponding to the opening of the second groove 1032, during the rotation of the valve core 300, the mating rib 301 contacts and abuts against the mating flange 202, thereby squeezing the mating flange 202, causing the area of ​​the sealing element 200 corresponding to the mating flange 202 to be squeezed toward the first groove 1031 and the second groove 1032, further causing the area in the first groove 1031 and the second groove 1032 to form a negative pressure zone, thereby ensuring that the sealing element 200 fits against the wall of the inner cavity 101.

[0030] The seal 200 has at least two connection ports 203. Along the radial direction of the seal 200, the connection ports 203 penetrate the body of the seal 200. Each connection port 203 corresponds to and communicates with a connecting port 102. The seal 200 also has at least two first sealing portions 204. Each first sealing portion 204 protrudes from the outer periphery of the seal 200. Each first sealing portion 204 corresponds to one of the connection ports 203 and surrounds the connection port 203, sealingly engaging with the wall of the inner cavity 101. Along the circumferential direction of the seal 200, a limiting groove 201 is located between two adjacent connection ports 203.

[0031] Since the first sealing part 204 surrounds the connection port 203 and is in sealing cooperation with the wall of the inner cavity 101, the independence between each connection port 203 is ensured, reducing the possibility of internal leakage.

[0032] The seal 200 has a second sealing portion 205, which protrudes from the outer periphery of the seal 200. The second sealing portion 205 is in sealing engagement with the wall of the inner cavity 101. On the outer periphery of the seal 200, one second sealing portion 205 surrounds at least one first sealing portion 204 and / or at least one limiting groove 201. That is, one second sealing portion 205 may surround one first sealing portion 204, two first sealing portions 204, or all of the first sealing portions 204.

[0033] Since the second sealing part 205 is sealed to the wall corresponding to the inner cavity 101, and one second sealing part 205 surrounds at least one first sealing part 204, a negative pressure area can be formed between the second sealing part 205 and the first sealing part 204 located in its surrounding area, so that the seal 200 fits against the wall corresponding to the inner cavity 101, increasing the sealing performance.

[0034] At least one limiting groove 201 is located in the area between the first sealing part 204 and the second sealing part 205. In this way, the negative pressure area between the first sealing part 204 and the second sealing part 205 helps to make the corresponding walls of the limiting flange 103 and the limiting groove 201 fit together.

[0035] Along the axial direction of the seal 200, the first sealing part 204 is inclined along the area away from the area surrounded by the first sealing part 204, and the second sealing part 205 is inclined along the area close to the area surrounded by the second sealing part 205. That is, the area between the first sealing part 204 and the second sealing part 205 presents an open tendency. This facilitates the formation of a negative pressure zone in the area between the first sealing part 204 and the second sealing part 205, and also helps to ensure the fit between the seal 200 and the corresponding wall of the inner cavity 101, thereby ensuring the sealing effect.

[0036] Along the circumferential direction of the outer periphery of the seal 200, there is at least one limiting groove 201 between two adjacent connection ports 203. This is a weak point in the seal—because the mating rib 301 only abuts against this area when the valve core 300 is in position. However, when switching working states, the mating rib 301 abuts against the area corresponding to the connection port 203. At this time, there is a risk of seal failure here. After setting the limiting groove 201, the first groove 1031 and the second groove 1032 cooperate with the wall corresponding to the limiting groove 201 to form a negative pressure area, which helps to ensure the seal here and thus reduces the negative impact caused by switching working states.

[0037] Figure 8 Another embodiment is shown, in which,

[0038] The limiting flange 103 has a mating groove 1033, the opening of which faces the seal 200 along the radial direction of the inner cavity 101; the wall corresponding to the limiting groove 201 closes the opening of the mating groove 1033.

[0039] Since the wall corresponding to the limiting groove 201 closes the opening of the mating groove 1033, a negative pressure zone can be formed between the wall corresponding to the mating groove 1033 and the wall corresponding to the limiting groove 201. This provides a force along the radial direction of the inner cavity 101, thereby allowing the sealing element 200 to fit against the wall corresponding to the inner cavity 101 to ensure a sealing effect.

[0040] The limiting flange 103 has a first mating surface 104 and a second mating surface 105. In the circumferential direction of the inner cavity 101, the first mating surface 104 and the second mating surface 105 are respectively located on both sides of the limiting flange 103 body. The wall corresponding to the limiting groove 201 includes a first mating wall 2011 and a second mating wall 2012. The first mating wall 2011 is disposed opposite to or substantially opposite to the first mating surface 104, and the second mating wall 2012 is disposed opposite to or substantially opposite to the second mating surface 105. The first mating wall 2011 and the first mating surface 104 can abut against each other, and the second mating wall 2012 and the second mating surface 105 can abut against each other. Thus, since the first mating wall 2011 and the first mating surface 104 are arranged opposite to or approximately opposite to each other, and the second mating wall 2012 and the second mating surface 105 are arranged opposite to or approximately opposite to each other, and the first mating wall 2011 and the first mating surface 104 can abut against each other, and the second mating wall 2012 and the second mating surface 105 can abut against each other, that is, the first mating surface 104 and the second mating surface 105 play a limiting role on the first mating wall 2011 and the second mating wall 2012, reducing the displacement of the seal 200 along the circumferential direction of the inner cavity 101.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and controls without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A valve, comprising: The device comprises a housing (100), a valve core (300), and a seal (200), the housing (100) having an inner cavity (101) and at least two communication ports (102), at least a portion of the valve core (300) and at least a portion of the seal (200) being located in the inner cavity (101), the valve core (300) being rotatable, characterized in that... Along the radial direction of the valve core, the seal (200) is located between the valve core (300) and the corresponding wall of the inner cavity (101). One of the outer peripheral side of the seal (200) and the corresponding wall of the inner cavity (101) has a limiting flange (103), and the other outer peripheral side of the seal (200) and the corresponding wall of the inner cavity (101) has a limiting groove (201). At least a portion of the limiting flange (103) is located in the limiting groove (201).

2. The valve according to claim 1, characterized in that, The limiting flange (103) has a first groove (1031) and a second groove (1032). Along the circumferential direction of the wall corresponding to the inner cavity (101), the first groove (1031) and the second groove (1032) are respectively located on both sides of the body of the limiting flange (103). The wall corresponding to the limiting groove (201) closes the openings of the first groove (1031) and the second groove (1032).

3. The valve according to claim 2, characterized in that, A first plane (109) is defined, which is perpendicular to the axis of the inner cavity (101). The first plane (109) intersects with the first groove (1031) and the second groove (1032) respectively. In the first plane (109), the connection points between the wall corresponding to the first groove (1031) and the limiting flange body are defined as the first connection point (110) and the second connection point (111), respectively. The connection points between the wall corresponding to the second groove (1032) and the limiting flange body are defined as the third connection point (112) and the fourth connection point (113), respectively. In the first plane (109), a first radius line (108) is defined on the circumference corresponding to the wall of the inner cavity (101), and the first radius line (108) passes through the limiting flange (103); a first straight line segment (114) and a second straight line segment (115) are defined, the first straight line segment (114) passes through the first connection (110) and the second connection (111), the second straight line segment (115) passes through the third connection (112) and the fourth connection (113), the angle between the first straight line segment (114) and the first radius line (108) is an acute angle, and the angle between the second straight line segment (115) and the first radius line (108) is an acute angle.

4. A valve according to claim 2, characterized in that, The valve core (300) has a mating rib (301), which protrudes from the body of the valve core (300) in the radial direction and abuts against the sealing element (200). The seal (200) has at least one mating flange (202) that protrudes from the inner circumferential side of the seal (200). Along the circumferential direction of the wall corresponding to the inner cavity (101), at least one of the mating flanges (202) or at least a portion of the mating flange (202) coincides with at least a portion of the wall corresponding to the opening of the first groove (1031), and at least one of the mating flanges (202) or at least a portion of the mating flange (202) coincides with at least a portion of the wall corresponding to the opening of the second groove (1032).

5. A valve according to claim 1, characterized in that, The limiting flange (103) has a mating groove (1033), the opening of which faces the seal (200) along the radial direction of the inner cavity (101); the wall corresponding to the limiting groove (201) closes the opening of the mating groove (1033).

6. A valve according to claim 5, characterized in that, The limiting flange (103) has a first mating surface (104) and a second mating surface (105). In the circumferential direction of the inner cavity (101), the first mating surface (104) and the second mating surface (105) are respectively located on both sides of the body of the limiting flange (103). The wall corresponding to the limiting groove (201) includes a first mating wall (2011) and a second mating wall (2012). The first mating wall (2011) is disposed opposite to or substantially opposite to the first mating surface (104), and the second mating wall (2012) is disposed opposite to or substantially opposite to the second mating surface (105). The first mating wall (2011) and the first mating surface (104) can abut against each other, and the second mating wall (2012) and the second mating surface (105) can abut against each other.

7. A valve according to any one of claims 1 to 6, characterized in that, The sealing element (200) has at least two connection ports (203). Along the radial direction of the sealing element (200), the connection ports (203) penetrate the body of the sealing element (200). The connection ports (203) correspond one-to-one with the communication ports (102) and are connected. The sealing element (200) has at least two first sealing portions (204), each first sealing portion (204) protruding from the outer periphery of the sealing element (200), each first sealing portion (204) corresponding to the connection port (203), and the first sealing portion (204) surrounds the connection port (203) and seals against the wall of the inner cavity (101).

8. A valve according to claim 7, characterized in that, The seal (200) has a second sealing portion (205) that protrudes from the outer periphery of the seal (200) and is sealed to the wall of the inner cavity (101). On the outer periphery of the seal (200), one second sealing portion (205) surrounds at least one first sealing portion (204) and / or at least one limiting groove (201).

9. A valve according to claim 8, characterized in that, Along the axial direction of the seal (200), the first sealing part (204) is inclined away from the area it surrounds, and the second sealing part (205) is inclined close to the area it surrounds. At least one of the limiting grooves (201) is located in the area between the first sealing part (204) and the second sealing part (205).

10. A valve according to any one of claims 1 to 6, characterized in that, Along the circumferential direction of the outer periphery of the seal (200), there is at least one limiting groove (201) between two adjacent connection ports (203).

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