Control valve

Abstract

The utility model discloses a control valve which comprises a valve body, a valve element and a first sealing ring, and at least part of the valve element is located in the valve body. The valve element is provided with a first conduction part and a second conduction part, the second conduction part is located on the radial outer side of the first conduction part, the second conduction part is provided with a multi-channel conduction cavity and a mold outlet, and the mold outlet is communicated with the multi-channel conduction cavity; the valve body is provided with an abutting part, the abutting part is arranged on the inner wall face of the valve body, the valve body is further provided with a normally-open channel, the abutting part surrounds a circle along a channel opening, located in the inner wall of the valve body, of the normally-open channel, and in the radial direction of the valve body, one of the abutting part and part of the first communication part is located in the other one of the abutting part and part of the first communication part. The first sealing ring is arranged between the abutting part and the first communicating part in an interference mode, the first sealing ring isolates the mold outlet from the normally-open channel, and it is beneficial for reducing the situation that fluid in the channel communicating cavity leaks into the normally-open channel.

Description

Technical Field

[0001] The utility model relates to the field of fluid control, in particular to a control valve. Background Art

[0002] Usually, the valve core of the control valve is provided with a variety of conducting cavities, one of which can connect to non-adjacent interfaces of the valve body. This kind of conducting cavity will make it difficult for the valve core to be demolded during injection molding. Therefore, in order to facilitate demolding, an ejection port is provided on the valve core. However, since the ejection port is connected to the conducting cavity, the ejection port will cause the fluid in the conducting cavity to leak to other valve body channels. Utility Model Content

[0003] The utility model aims to provide a control valve, which is beneficial to reducing the leakage of the control valve.

[0004] The utility model provides a control valve, comprising a valve body, a valve core, and a first sealing ring, wherein at least part of the valve core is located in the valve body;

[0005] The valve core has a first conducting part and a second conducting part, the second conducting part is fixed to the outer side of the first conducting part, the second conducting part has a multi-channel conducting cavity and a die outlet, and the die outlet is connected to the multi-channel conducting cavity;

[0006] The valve body has an abutment portion, which is arranged on the inner wall surface of the valve body. The valve body also has a normally open channel. The abutment portion surrounds the channel opening of the inner wall of the valve body along the normally open channel. Along the radial direction of the valve body, one of the abutment portion and part of the first conducting portion is located inside the other. The first sealing ring is interference-interference-arranged between the abutment portion and the first conducting portion. The first sealing ring isolates the mold outlet from the normally open channel.

[0007] According to the control valve provided by the embodiment of the utility model, since the abutment portion is located along the channel opening of the inner wall of the valve body along the normally-opening channel and surrounds it, along the radial direction of the valve body, one of the abutment portion and the first conducting portion is located inside the other, and the first sealing ring is excessively large between the abutment portion and the first conducting portion. Therefore, the first sealing ring can isolate the die opening and the normally-opening channel, and the fluid in the multi-channel conducting cavity cannot leak into the normally-opening channel, thereby reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the control valve provided by the embodiment of the utility model;

[0009] Figure 2 It is a schematic diagram of the exploded structure of the control valve provided by the embodiment of the utility model;

[0010] Figure 3It is a schematic diagram of the cross-sectional structure of a control valve provided by an embodiment of the utility model;

[0011] Figure 4 It is a schematic diagram of the external structure of the valve body provided by the embodiment of the utility model;

[0012] Figure 5 It is a schematic diagram of the internal structure of the valve body provided by the embodiment of the utility model;

[0013] Figure 6 It is a schematic diagram of the cross-sectional structure of the valve body provided by the embodiment of the utility model;

[0014] Figure 7 It is a structural schematic diagram of the valve core provided by an embodiment of the utility model;

[0015] Figure 8 It is another structural schematic diagram of the valve core provided by an embodiment of the utility model;

[0016] Fig. 9 This is another structural schematic diagram of the valve core provided by the embodiment of the utility model;

[0017] Fig.10 It is a schematic diagram of the cross-sectional structure of the valve core provided in the embodiment of the utility model;

[0018] Fig.11 It is a structural schematic diagram of the valve cover provided by an embodiment of the utility model;

[0019] Fig.12 It is a schematic diagram of a valve core with a section line provided in an embodiment of the utility model;

[0020] Fig.13 yes Fig.12 Schematic diagram of the cross section at A in the middle;

[0021] Fig.14 yes Fig.12 The cross-sectional diagram at B in the middle;

[0022] Fig.15 It is a structural schematic diagram of a first sealing member provided in an embodiment of the utility model;

[0023] Fig.16 It is a schematic diagram of the exploded structure of the power assembly provided by the embodiment of the utility model;

[0024] Fig.17 It is a schematic diagram of the structural connection of the gating channel of the first working mode provided by the embodiment of the utility model;

[0025] Fig.18 It is a connection diagram of the gating channel of the first working mode provided by the embodiment of the utility model;

[0026] Fig.19 It is a schematic diagram of the structural connection of the gating channel of the second working mode provided by the embodiment of the utility model;

[0027] Fig. 20 It is a connection diagram of the gating channel of the second working mode provided by the embodiment of the utility model;

[0028] Fig.21 It is a schematic diagram of the structural connection of the gating channel of the third working mode provided by the embodiment of the utility model;

[0029] Fig. 22 It is a connection diagram of the gating channel of the third working mode provided by the embodiment of the utility model;

[0030] Fig.23 It is a schematic diagram of the structural connection of the gating channel of the fourth working mode provided by the embodiment of the utility model;

[0031] Fig.24 It is a connection diagram of the gating channel of the fourth working mode provided by the embodiment of the utility model;

[0032] Fig.25 It is a schematic diagram of the structural connection of the gating channel of the fifth working mode provided by the embodiment of the utility model;

[0033] Fig.26 It is a connection diagram of the gating channel of the fifth working mode provided by the embodiment of the utility model;

[0034] Fig. 27 It is a schematic diagram of the structural connection of the gating channel of the sixth working mode provided by the embodiment of the utility model;

[0035] Fig.28 It is a connection diagram of the selection channel of the sixth working mode provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0036] The features and exemplary embodiments of various aspects of the present invention are described below. In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. In this article, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0037] See also Figures 1 to 3 The control valve provided by the utility model includes a valve body 1, a valve core 2, a first sealing ring 3, a second sealing ring 4, a valve cover 5, a first sealing member 6, a second sealing member 7, and a power assembly 8.

[0038] See also Figures 4 to 6 The valve body 1 includes a main body 18, which is generally cylindrical, and a valve cavity 11 is formed in the main body 18, and the valve cavity 11 can also be cylindrical, so that the valve core 2 can rotate in the valve cavity 11. One axial end of the main body 18 is open, and the opening is connected to the valve cavity 11, that is, the valve core 2 can be installed in the valve cavity 11 through the opening.

[0039] The valve body 1 further comprises a normally open portion 14, at least part of which can be fixedly disposed on the other axial end face of the body portion 18. The normally open portion 14 defines at least part of the wall of the normally open passage 12, and the normally open passage 12 can be surrounded between the normally open portion 14 and the axial end face of the body portion 18.

[0040] In addition, a through hole 15 is provided on the axial end surface of the main body 18 , and the through hole 15 can connect the normal passage 12 and the valve cavity 11 .

[0041] An abutment portion 16 is also provided on the inner wall of the axial end surface of the body portion 18. The abutment portion 16 is preferably annular and can extend along the inner wall edge defining the through hole 15. Further, the abutment portion 16, the through hole 15 and the valve cavity 11 can be coaxially arranged. In addition, the inner diameter of the abutment portion 16 can be slightly larger than the diameter of the through hole 15.

[0042] The valve body 1 further includes a mounting portion 17, which is fixedly connected to the body portion 18 and the normally open portion 14. The mounting portion 17 and the body portion 18 together form a plurality of gate channels 13, specifically, the plurality of gate channels 13 include a first channel 131, a second channel 132, a third channel 133, a fourth channel 134, a fifth channel 135, and a sixth channel 136, and the first channel 131, the second channel 132, the third channel 133, the fourth channel 134, the fifth channel 135, and the sixth channel 136 can be arranged in two rows and three columns. The first channel 131, the second channel 132, and the third channel 133 are arranged in a row, that is, the first channel 131, the second channel 132, and the third channel 133 are located at the first axial height, and the first channel 131, the second channel 132, and the third channel 133 are arranged at intervals from each other; the fourth channel 134, the fifth channel 135, and the sixth channel 136 are arranged in a row, that is, the fourth channel 134, the fifth channel 135, and the sixth channel 136 are located at the second axial height, and are arranged at intervals from each other. In addition, the axial heights of the first axial height and the second axial height are different. The first channel 131 and the fourth channel 134 are spaced apart along the axial direction of the valve core 2, the second channel 132 and the fifth channel 135 are spaced apart along the axial direction of the valve core 2, and the third channel 133 and the sixth channel 136 are spaced apart along the axial direction of the valve core 2.

[0043] The first channel 131, the second channel 132, the third channel 133, the fourth channel 134, the fifth channel 135, and the sixth channel 136 all have interfaces arranged on the mounting portion 17, and the six interfaces are arranged in two rows and three columns, that is, along the axial direction of the valve cavity 11, the six interfaces are arranged in two rows, and each row of interfaces has three interfaces. Since the mounting portion 17 can be planar, the six interfaces can also be located on the same plane. In addition, the normally open channel 12 also has an interface, and the interface of the normally open channel 12 is also located on the mounting portion 17. In other words, the interface of the first channel 131, the interface of the second channel 132, the interface of the third channel 133, the interface of the fourth channel 134, the interface of the fifth channel 135, the interface of the sixth channel 136, and the interface of the normally open channel 12 are all located on the same plane and face the same direction, which is conducive to simplifying the connection steps of each interface with other devices.

[0044] The first channel 131, the second channel 132, the third channel 133, the fourth channel 134, the fifth channel 135, and the sixth channel 136 also have channel openings located on the inner wall of the main body 18, and each channel opening is arranged in two rows and three columns, that is, along the axial direction of the valve cavity 11, six channel openings are arranged in two rows, and each row of channel openings has three channel openings.

[0045] See also Figures 7 to 14 The valve core 2 includes a first conducting portion 24, which may be cylindrical, so as to facilitate the valve core 2 to rotate in the valve cavity 11. An inner conducting cavity 21 is formed inside the first conducting portion 24, and part of the first conducting portion 24 is located in the abutting portion 16 and the through hole 15, so that the inner conducting cavity 21 and the normally open channel 12 are always connected.

[0046] The outer diameter of the first conducting portion 24 may be smaller than the diameters of the abutting portion 16 and the through hole 15. Therefore, after the valve core 2 is installed in the valve cavity 11, part of the first conducting portion 24 may pass through the abutting portion 16 and extend into the through hole 15, so that the inner conducting cavity 21 is always connected with the normally open channel 12. It can be imagined that the inner wall defining the through hole 15 can limit the non-axial movement of the first conducting portion 24, thereby enhancing the stability of the installation of the valve core 2. In addition, in the case of high processing accuracy, the outer diameter of the first conducting portion 24 may be equal to the diameter of the through hole 15. At this time, after the first conducting portion 24 extends into the through hole 15, the inner wall defining the through hole 15 abuts against the first conducting portion 24, thereby achieving the best limiting effect.

[0047] The valve core 2 further includes a second conducting portion 25, which is disposed around the outer side of the first conducting portion 24. The second conducting portion 25 has a multi-channel conducting cavity 28.

[0048] It is very important that the multi-channel conduction cavity 28 is used to connect two non-adjacent gate channels 13, for example, see Figure 4, the multi-channel conduction cavity 28 can conduct the third channel 133 and the fifth channel 135. It should be clear that if the third channel 133 and the fifth channel 135 are to be conducted, the multi-channel conduction cavity 28 needs to pass through the second conduction portion 25 corresponding to the second channel 132 or the sixth channel 136. Taking the sixth channel 136 as an example, in order to conduct the third channel 133 and the fifth channel 135 without conducting the sixth channel 136, a shielding portion 291 is provided on the second conduction portion 25 corresponding to the sixth channel 136. Optionally, the shielding portion 291 is located between the multi-channel conduction cavity 28 and the sixth channel 136, at least part of the outer side surface of the shielding portion 291 overlaps with the outer side surface of the second conduction portion 25, the inner side surface of the shielding portion 291 is spaced from the first conduction portion 24, and part of the multi-channel conduction cavity 28 is provided between the inner side surface of the shielding portion 291 and the first conduction portion 24. The shielding portion 291 can cover part of the multi-channel conducting cavity 28, and the shielding portion 291 can abut against the first sealing member 6 to seal the sixth channel 136, so as to isolate the multi-channel conducting cavity 28 from the sixth channel 136. At this time, since the valve core 2 is integrally formed by injection molding, the area between the first conducting portion 24 and the shielding portion 291 cannot be demolded. Therefore, in order to solve this problem, a mold outlet 29 is provided on the valve core 2. The mold outlet 29 is located between the first conducting portion 24 and the shielding portion 291, and passes through one side axial end of the second conducting portion 25. That is to say, the mold outlet 29 will connect the multi-channel conducting cavity 28 and the valve cavity 11, thereby causing the multi-channel conducting cavity 28 and the normally-passing channel 12 to flow in series. In order to solve this problem, a first sealing ring 3 is interference-fitted between the first conducting portion 24 and the abutting portion 16. The first sealing ring 3 can seal the valve cavity 11 and the normally open channel 12. Therefore, when the fluid enters the valve cavity 11 from the multi-channel conducting cavity 28, it cannot enter the normally open channel 12 or a very small amount of fluid flows between the normally open channel 12 and the valve cavity 11, thereby reducing or even preventing the occurrence of cross-flow, thereby meeting the sealing performance requirements.

[0049] It can be imagined that at least part of the outer side surface of the shielding portion 291 can overlap with the outer side surface of the second conductive portion 25. In other words, the outer side surface of the middle part of the shielding portion 291 may not overlap with the outer side surface of the second conductive portion 25. It is only necessary to ensure that the edges of the shielding portion 291 can overlap with the outer side surface of the second conductive portion 25. At this time, the edges of the shielding portion 291 can abut against the first sealing member 6, thereby achieving the required sealing effect.

[0050] In addition, if Figure 3 As shown, since part of the first conducting portion 24 can extend into the through hole 15, a relatively closed installation cavity can be enclosed between the first conducting portion 24, the abutting portion 16, the axial end face of the valve core 2, and the second conducting portion 25. The first sealing ring 3 is located in the installation cavity, which has good stability and will not cause the first sealing ring 3 to fall off.

[0051] The second conducting portion 25 further has a first outer conducting cavity 22. Specifically, a through groove 26 is further provided on the outer side of the first conducting portion 24. The through groove 26 can connect the inner conducting cavity 21 and the first outer conducting cavity 22. The first outer conducting cavity 22 can communicate with at least one of the gate channels 13. That is, the normally-passing channel 12 can communicate with at least one of the gate channels 13 through the inner conducting cavity 21, the through groove 26, and the first outer conducting cavity 22. In this embodiment, one first outer conducting cavity 22 is connected with one gate channel 13.

[0052] The second conducting portion 25 also has a second outer conducting cavity 23, specifically, the second outer conducting cavity 23 includes an axial outer conducting cavity 231 and a circumferential outer conducting cavity 232. The axial outer conducting cavity 231 extends along the axial direction of the valve core 2, that is, the axial outer conducting cavity 231 can communicate with at least two axially spaced selection channels 13, in this embodiment, the axial outer conducting cavity 231 can communicate with two adjacent axially spaced selection channels 13. The circumferential outer conducting cavity 232 extends along the circumference of the valve core 2, that is, the circumferential outer conducting cavity 232 can communicate with at least two circumferentially spaced selection channels 13, in this embodiment, the circumferential outer conducting cavity 232 can communicate with two adjacent circumferentially spaced selection channels 13.

[0053] The valve core 2 further includes abutment ribs 292, which can be disposed in at least one of the multi-channel conducting cavity 28, the circumferential outer conducting cavity 232, and the axial outer conducting cavity 231. Figure 8 When the abutting rib 292 is arranged in the multi-channel conducting cavity 28 and the circumferential outer conducting cavity 232, the abutting rib 292 extends in the axial direction, and the axial ends of the abutting rib 292 can be respectively fixed to the axial two side surfaces of the multi-channel conducting cavity 28 or the circumferential outer conducting cavity 232, and along the radial direction of the valve body 1, the outer side surface of the abutting rib 292 and the outer side of the second conducting portion 25 are on the same annular surface, and the outer side surface of the abutting rib 292 abuts against the first sealing member 6 between the circumferentially adjacent avoidance channels, thereby playing a supporting role for the first sealing member 6. The inner side surface of the abutting rib 292 is spaced apart from the first conducting portion 24, that is, there is a gap between the inner side surface of the abutting rib 292 and the first conducting portion 24 for the fluid to pass through, so as not to affect the normal circulation of the fluid.

[0054] In addition, when the abutting rib 292 is arranged in the axial outer conducting cavity 231, the abutting rib 292 extends in the circumferential direction, and the two circumferential ends of the abutting rib 292 can be fixed to the two circumferential side surfaces of the axial outer conducting cavity 231, and along the radial direction of the valve body 1, the outer side surface of the abutting rib 292 and the outer surface of the second conducting portion 25 are on the same annular surface, and the outer side surface of the abutting rib 292 abuts against the first sealing member 6 between the axially adjacent avoidance channels, thereby playing a supporting role for the first sealing member 6. The inner side surface of the abutting rib 292 is spaced apart from the first conducting portion 24, that is, there is a gap between the inner side surface of the abutting rib 292 and the first conducting portion 24 for the fluid to pass through, so as not to affect the normal circulation of the fluid.

[0055] See also Figure 8 The valve core 2 further includes a plurality of partitions 293, each of which can be extended in the axial direction or the circumferential direction, and each of which can cross each other. In the radial direction of the valve body 1, the outer side surface of each of the partitions 293 and the outer side surface of the abutting rib 292 are on the same annular surface, and the inner side surface of each of the partitions 293 abuts against the first conducting portion 24, thereby forming a multi-channel conducting cavity 28, a first outer conducting cavity 22, and a second outer conducting cavity 23, and the multi-channel conducting cavity 28, the first outer conducting cavity 22, and the second outer conducting cavity 23 are fluidically isolated from each other.

[0056] Also, see Fig. 9 The multi-channel conduction cavity 28 may specifically include a first cavity 281 and a second cavity 282, and the first cavity 281 is connected to the second cavity 282. Along the axial direction of the valve body 1, the projection of the second cavity 282 overlaps with a part of the projection of the first cavity 281, and the projection of the second cavity 282 is spaced apart from another part of the projection of the first cavity 281, so as to achieve the connection of non-adjacent selection channels 13. The shielding portion 291 may be disposed at the connection between the first cavity 281 and the second cavity 282, so as to isolate the selection channel 13 and the multi-channel conduction cavity 28 corresponding to the connection between the first cavity 281 and the second cavity 282.

[0057] The first cavity 281 is arranged in the same manner as the circumferential outer conducting cavity 232 , and therefore an abutting rib 281 may also be arranged in the first cavity 281 to support the first sealing member 6 .

[0058] See also Figure 7 and Fig.11 The valve core 2 has a transmission part 27; the valve cover 5 is fixed to the valve body 1, and the valve cover 5 has a valve hole 51 and a protrusion 52, the protrusion 52 extends along the edge of the valve hole 51, part of the transmission part 27 passes through the protrusion 52 and the valve hole 51, and the second sealing ring 4 is interference fit between the transmission part 27 and the protrusion 52.

[0059] The valve cover 5 is fixed to the valve body 1. Specifically, the valve cover 5 is sealed and fixed to the opening of the inner wall defining the valve cavity 11. In addition, the valve cover 5 is also provided with a valve hole 51 and a protrusion 52. The valve hole 51 can be coaxially arranged with the valve core 2. The protrusion 52 is arranged on the side of the valve cover 5 facing the valve core 2, and the protrusion 52 is annular and extends along the inner wall defining the valve hole 51. In addition, the inner diameter of the protrusion 52 can be greater than or equal to the diameter of the valve hole 51.

[0060] A transmission part 27 is provided on the axial end face of the valve core 2 close to the valve cover 5. When the valve core 2 is installed in the valve cavity 11 and the valve cover 5 is fixed to the valve body 1, the transmission part 27 can pass through the protrusion 52 and the valve hole 51. Since the valve core 2 can rotate relative to the valve body 1 and the valve cover 5, a gap will be left between the transmission part 27 and the protrusion 52 and the inner wall defining the valve hole 51. In order to enhance the sealing performance between the transmission part 27 and the valve cover 5 and prevent the fluid entering the valve cavity 11 through the conduction cavity from overflowing through the gap, a second sealing ring 4 is also interference-fitted between the transmission part 27 and the protrusion 52. The second sealing ring 4 can enhance the sealing performance between the transmission part 27 and the protrusion 52 and reduce or even prevent the fluid in the valve cavity 11 from overflowing through the gap.

[0061] In addition, it can be imagined that in the existing control valve, the valve core 2 is in direct contact with the valve body 1 and the valve cover 5. When the valve core 2 rotates, the friction between the valve core 2 and the valve body 1 and the valve cover 5 is large, which is not conducive to the rotation of the valve core 2. However, the control valve provided by the utility model has a first sealing ring 3 between the first conducting portion 24 and the abutting portion 16, a second sealing ring 4 between the transmission portion 27 and the protruding portion 52, and the first sealing ring 3 and the second sealing ring 4 are both made of soft materials such as rubber and have a certain amount of compression, that is, the valve core 2 can rotate more stably. In addition, a lubricant can also be applied to the first sealing ring 3 and the second sealing ring 4, specifically Krupp grease, so as to further reduce the friction between the valve core 2 and the first sealing ring 3 and the second sealing ring 4 when the valve core 2 rotates.

[0062] See also Fig.15 In order to enhance the sealing performance between the valve core 2 and the valve body 1, a first sealing member 6 is further provided between the valve core 2 and the valve body 1. Specifically, the first sealing member 6 is substantially annular and has a notch extending in the axial direction.

[0063] Correspondingly, a stopper (not shown in the figure) is fixedly provided on the inner wall defining the valve cavity 11, the stopper extends in the axial direction, and the circumferential width of the stopper matches the notch. That is to say, when the first sealing member 6 is installed in the valve cavity 11, the annular surface on the outer side of the first sealing member 6 abuts against the inner wall defining the valve cavity 11, and the stopper is inserted into the notch, so that the two ends of the notch formed by the first sealing member 6 abut against the stopper, thereby realizing the installation of the first sealing member 6. Afterwards, the valve core 2 is installed in the first sealing member 6, so that the valve core 2 abuts against the annular surface on the inner side of the first sealing member 6, thereby isolating the conduction cavities from each other.

[0064] In order to connect the multi-channel conduction chamber 28 and the selection channel 13, the first outer conduction chamber 22 and the selection channel 13, and the second outer conduction chamber 23 and the selection channel 13, the first seal 6 is also provided with a first avoidance channel 61, a second avoidance channel 62, a third avoidance channel 63, a fourth avoidance channel 64, a fifth avoidance channel 65, and a sixth avoidance channel 66. The arrangement of each avoidance channel is the same as that of the selection channel 13, that is, each avoidance channel is also arranged in two rows and three columns. Specifically, along the axial direction of the valve core 2, each avoidance channel is divided into two rows, and each row has three avoidance channels. The first avoidance channel 61, the second avoidance channel 62, the third avoidance channel 63, the fourth avoidance channel 64, the fifth avoidance channel 65, and the sixth avoidance channel 66 are connected to the first channel 131, the second channel 132, the third channel 133, the fourth channel 134, the fifth channel 135, and the sixth channel 136 in a one-to-one correspondence.

[0065] It should be noted that, since the first seal 6 is made of flexible materials such as rubber, the valve core 2 is installed between the first seals 6. In order to ensure good sealing between the valve core 2 and the first seal 6, a certain amount of interference will be provided between the valve core 2 and the first seal 6, that is, the valve core 2 will squeeze the first seal 6, and at the same time, the first seal 6 will also exert a force on the valve core 2. The first seal 6 of the control valve provided by the utility model is roughly annular, that is, the force exerted by the first seal 6 on the valve core 2 is roughly uniform, which can prevent the valve core 2 from being offset due to the force of the first seal 6 after installation. In addition, combined with the above-mentioned first seal ring 3 and second seal ring 4, the valve core 2 that does not deviate can rotate more stably.

[0066] See also Fig.16 The power assembly 8 includes a first housing 81 , a second housing 82 , a motor 83 , a worm 84 , a first double gear 85 , a second double gear 86 , a third double gear 87 , an output gear 88 , and a shock-absorbing pad 89 .

[0067] The second housing 82 can be fixedly connected to the valve body 1 by fasteners, and the first housing 81 can be fixedly connected to the second housing 82. In addition, the first housing 81 and the second housing 82 both have a partial installation cavity, and when the first housing 81 and the second housing 82 are fixed, a complete installation cavity can be formed, and the motor 83, the worm 84, the first double gear 85, the second double gear 86, the third double gear 87, the output gear 88, and the shock-absorbing pad 89 are all located in the installation cavity.

[0068] Specifically, the motor 83 is fixed in the installation cavity, and the output end of the motor 83 is fixed to the worm 84, the worm 84 is transmission-connected to the first duplex gear 85, the first duplex gear 85 is transmission-connected to the second duplex gear 86, the second duplex gear 86 is transmission-connected to the third duplex gear 87, the third duplex gear 87 is transmission-connected to the output gear 88, and the output gear 88 is transmission-connected to the transmission part 27. Therefore, when the motor 83 is started, the motor 83 can drive the valve core 2 to rotate through the worm 84, the first duplex gear 85, the second duplex gear 86, the third duplex gear 87, and the output gear 88, thereby realizing multiple working modes.

[0069] The control valve includes at least one of six operating modes;

[0070] See also Figure 17 to Figure 18 , the first working mode: the first channel 131 is connected to the normal channel 12, the fourth channel 134 is connected to the second channel 132, the fifth channel 135 is blocked, and the third channel 133 is connected to the sixth channel 136;

[0071] It is clear that in the first working mode, the side of the valve core 2 opposite to the selection channel 13 has a first outer conduction chamber 22, a multi-channel conduction chamber 28 and an axial outer conduction chamber 231. Specifically, the first outer conduction chamber 22 is located at the first axial height, and the first outer conduction chamber 22 is connected to the inner conduction chamber 21, and is used to conduct the first channel 131 and the normal channel 12. The multi-channel conduction chamber 28 is L-shaped, and one cavity opening of the multi-channel conduction chamber 28 is located at the first axial height and is circumferentially spaced from the first outer conduction chamber 22, and the other cavity opening is located at the second axial height and is axially spaced from the first outer conduction chamber 22. The multi-channel conduction chamber 28 conducts the second channel 132 and the fourth channel 134. In addition, the fifth channel 135 is opposite to the blocking portion 291, so the fifth channel 135 cannot be conducted with the multi-channel conduction chamber 28. The axially outer conducting cavity 231 spans the first axial height and the second axial height, and is circumferentially spaced apart from the multi-channel conducting cavity 28 . The axially outer conducting cavity 231 communicates with the third channel 133 and the sixth channel 136 .

[0072] See also Figure 19 to Figure 20, the second working mode: the first channel 131 is connected to the second channel 132, the fourth channel 134 is connected to the normal channel 12, the fifth channel 135 is blocked, and the third channel 133 is connected to the sixth channel 136;

[0073] It is clear that in the second working mode, the side of the valve core 2 opposite to the selection channel 13 has a circumferential outer conduction cavity 232, a first outer conduction cavity 22, and an axial outer conduction cavity 231. Specifically, the circumferential outer conduction cavity 232 is located at the first axial height, and can conduct the first channel 131 and the second channel 132. The first outer conduction cavity 22 is located at the second axial height, and is axially spaced from the cavity opening on the left side of the circumferential outer conduction cavity 232. The first outer conduction cavity 22 is connected to the inner conduction cavity 21, and can conduct the normal channel 12 and the fourth channel 134. In addition, there is no conduction cavity on the valve core 2 opposite to the fifth channel 135, so the fifth channel 135 is blocked. The axial outer conduction cavity 231 spans the first axial height and the second axial height, and is circumferentially spaced from the circumferential outer conduction cavity 232. The axial outer conduction cavity 231 is connected to the third channel 133 and the sixth channel 136.

[0074] See also Figure 21 to Figure 22 , the third working mode: the fourth channel 134, the first channel 131, and the sixth channel 136 are blocked, the third channel 133 is connected to the second channel 132, and the fifth channel 135 is connected to the normal channel 12;

[0075] It is clear that in the third working mode, the valve core 2 has a circumferential outer conduction cavity 232 and a first outer conduction cavity 22 on the side opposite to the selection channel 13. Specifically, the circumferential outer conduction cavity 232 is located at the first axial height, and can conduct the third channel 133 and the second channel 132. The first outer conduction cavity 22 is located at the second axial height, and is axially spaced from the cavity opening on the left side of the circumferential outer conduction cavity 232. The first outer conduction cavity 22 is connected to the inner conduction cavity 21, and can conduct the fifth channel 135 and the normal passage 12. There is no conduction cavity on the valve core 2 opposite to the fourth channel 134, the first channel 131, and the sixth channel 136, so the fourth channel 134, the first channel 131, and the sixth channel 136 are blocked.

[0076] See also Figure 23 to Figure 24 , the fourth working mode: the fourth channel 134 is blocked, the first channel 131 is connected to the second channel 132, the third channel 133 is connected to the sixth channel 136, and the fifth channel 135 is connected to the normal channel 12;

[0077] It is clear that in the fourth working mode, the side of the valve core 2 opposite to the selection channel 13 has a circumferential outer conduction cavity 232, a first outer conduction cavity 22, and an axial outer conduction cavity 231. Specifically, the circumferential outer conduction cavity 232 is located at the first axial height, and can conduct the first channel 131 and the second channel 132. The first outer conduction cavity 22 is located at the second axial height, and is axially spaced from the cavity opening on the right side of the circumferential outer conduction cavity 232. The first outer conduction cavity 22 is connected to the inner conduction cavity 21, and can conduct the fifth channel 135 and the normal passage 12. The axial outer conduction cavity 231 is circumferentially spaced from the circumferential outer conduction cavity 232 and the first outer conduction cavity 22, and can conduct the third channel 133 and the sixth channel 136. In addition, the valve core 2 opposite to the fourth channel 134 is not provided with a conduction cavity, so the fourth channel 134 is blocked.

[0078] See also Figure 25 to Figure 26 , the fifth working mode: the fourth channel 134 is blocked, the fifth channel 135 is connected to the second channel 132, the third channel 133 is connected to the sixth channel 136, and the first channel 131 is connected to the normal channel 12;

[0079] It is clear that in the fifth working mode, the valve core 2 has a first outer conducting cavity 22 and two axial outer conducting cavities 231 on the side opposite to the selection channel 13. Specifically, the first outer conducting cavity 22 is located at the first axial height, and the first outer conducting cavity 22 is connected to the inner conducting cavity 21, and can conduct the first channel 131 and the normal passage 12. The two axial outer conducting cavities 231 are arranged at intervals along the circumferential direction, and the axial outer conducting cavity 231 adjacent to the first outer conducting cavity 22 conducts the fifth channel 135 and the second channel 132, and the other axial outer conducting cavity 231 conducts the third channel 133 and the sixth channel 136. In addition, the valve core 2 opposite to the fourth channel 134 is not provided with a conducting cavity, so the fourth channel 134 is blocked.

[0080] See also Figure 27 to Figure 28 , the sixth working mode: the fourth channel 134 is blocked, the first channel 131 is connected to the second channel 132 , the fifth channel 135 is connected to the sixth channel 136 , and the third channel 133 is connected to the normally open channel 12 .

[0081] It is clear that in the sixth working mode, the valve core 2 has a circumferential outer conducting cavity 232, a first outer conducting cavity 22, and a part of the multi-channel conducting cavity 28 on the side opposite to the selection channel 13. Specifically, the circumferential outer conducting cavity 232 is located at the first axial height, and can conduct the first channel 131 and the second channel 132. The first outer conducting cavity 22 is located at the first axial height, and is circumferentially spaced from the circumferential outer conducting cavity 232. The first outer conducting cavity 22 is connected to the inner conducting cavity 21, and can conduct the third channel 133 and the normal passage 12. It should be noted that the first cavity 281 of the multi-channel conducting cavity 28 is located at the second axial height, and its function is equivalent to the circumferential outer conducting cavity 232, so it can conduct the fifth channel 135 and the sixth channel 136, and the first sealing member 6 opposite to the second cavity 282 of the multi-channel conducting cavity 28 is not provided with an avoidance channel, so there is no risk of leakage. In addition, the valve core 2 opposite to the fourth channel 134 is not provided with a conducting cavity, so the fourth channel 134 is blocked.

[0082] It should be noted that the above implementation modes are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention, such as the directional definitions of "front", "rear", "left", "right", "up" and "down". Although the present invention has been described in this specification with reference to the above implementation modes, those skilled in the art should understand that those skilled in the art can still modify, combine or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A control valve, characterized in that: It comprises a valve body (1), a valve core (2), and a first sealing ring (3), wherein at least a portion of the valve core (2) is located inside the valve body (1); The valve core (2) comprises a first conducting portion (24) and a second conducting portion (25), wherein the second conducting portion (25) is located radially outside the first conducting portion (24), and the second conducting portion (25) comprises a multi-channel conducting cavity (28) and a die outlet (29), wherein the die outlet (29) is connected to the multi-channel conducting cavity (28); The valve body (1) has an abutment portion (16), and the abutment portion (16) is arranged on the inner wall surface of the valve body (1). The valve body (1) also has a normally open channel (12), and the abutment portion (16) surrounds the channel opening of the inner wall of the valve body (1) along the normally open channel (12). Along the radial direction of the valve body (1), one of the abutment portion (16) and a part of the first conductive portion (24) is located inside the other. The first sealing ring (3) is interference-fittedly arranged between the abutment portion (16) and the first conductive portion (24), and the first sealing ring (3) isolates the mold outlet (29) from the normally open channel (12).

2. The control valve according to claim 1, characterized in that: The die exit (29) is located at the axial end face of the second conducting portion (25), and the abutment portion (16) abuts against the axial end face of the second conducting portion (25); along the axial direction of the valve body (1), a projection portion of the wall surface of the die exit (29) is located radially outside the abutment portion (16), and another portion is located radially inside the abutment portion (16).

3. The control valve according to claim 1, characterized in that: The valve body (1) has a plurality of gate channels (13), and the multi-channel conducting cavity (28) is connected to at least two non-adjacent gate channels (13); The valve body (1) further comprises a shielding portion (291), wherein along the radial direction of the valve body (1), the shielding portion (291) is located between the multi-channel conducting cavity (28) and at least one of the gating channels (13), and the multi-channel conducting cavity (28) is fluidically isolated from at least one of the gating channels (13).

4. The control valve according to claim 3, characterized in that: The multi-channel conducting cavity (28) comprises a first cavity (281) and a second cavity (282) communicating with the first cavity (281); along the axial direction of the valve body (1), a projection of the second cavity (282) overlaps with a portion of a projection of the first cavity (281); and a projection of the second cavity (282) is spaced apart from another portion of a projection of the first cavity (281); The shielding portion (291) is arranged at the connecting point between the first cavity (281) and the second cavity (282).

5. The control valve according to claim 3, characterized in that: Along the radial direction of the valve body (1), at least part of the outer side surface of the shielding portion (291) overlaps with the outer side surface of the second conducting portion (25), the inner side surface of the shielding portion (291) is spaced apart from the first conducting portion (24), and part of the multi-channel conducting cavity (28) is provided between the inner side surface of the shielding portion (291) and the first conducting portion (24).

6. The control valve according to claim 3, characterized in that: The valve body (1) has a normally open portion (14), the normally open portion (14) defines at least a portion of the wall of the normally open channel (12), the first conductive portion (24) has an inner conductive cavity (21), and the normally open channel (12) and the inner conductive cavity (21) are in communication.

7. The control valve according to claim 6, characterized in that The second conducting portion (25) further comprises a first outer conducting cavity (22) and a second outer conducting cavity (23); the first conducting portion (24) further comprises a through groove (26), the through groove (26) conducting the first outer conducting cavity (22) and the inner conducting cavity (21); in the valve core, the first outer conducting cavity (22) and the second outer conducting cavity (23) are fluidically isolated; the inner conducting cavity (21) and the first outer conducting cavity (22) conduct the normally open channel (12) and one of the selection channels (13); the second outer conducting cavity (23) conducts at least two adjacent selection channels (13).

8. The control valve according to claim 7, characterized in that: The control valve further comprises a first sealing member (6), the first sealing member (6) being arranged between the valve body (1) and the valve core (2); the first sealing member (6) being provided with a first avoidance channel (61), a second avoidance channel (62), a third avoidance channel (63), a fourth avoidance channel (64), a fifth avoidance channel (65), and a sixth avoidance channel (66); the first avoidance channel (61), the second avoidance channel (62), and the third avoidance channel (63) being located at a first axial height and being spaced apart from each other; the fourth avoidance channel (64), the fifth avoidance channel (65), and the sixth avoidance channel (66) being located at a second axial height and being spaced apart from each other; the first avoidance channel (61) and the fourth avoidance channel (64) being located on the same axial direction; the second avoidance channel (62) and the fifth avoidance channel (65) being located on the same axial direction; and the third avoidance channel (63) and the sixth avoidance channel (66) being located on the same axial direction; In the first working mode: The first outer conducting cavity (22) conducts to the first avoidance channel (61), and the second outer conducting cavity (23) conducts to the third avoidance channel (63) and the sixth avoidance channel (66); The multi-channel conducting cavity (28) conducts the second avoidance channel (62) and the fourth avoidance channel (64), and the shielding portion (291) abuts against the first sealing member (6) defining the fifth avoidance channel (65), and the fifth avoidance channel (65) is fluidically isolated from the multi-channel conducting cavity (28).

9. The control valve according to claim 8, characterized in that The second outer conducting cavity (23) comprises an axial outer conducting cavity (231) and a circumferential outer conducting cavity (232), wherein the axial outer conducting cavity (231) extends along the axial direction of the valve core (2), and the circumferential outer conducting cavity (232) extends along the circumferential direction of the valve core (2); The valve core (2) further comprises an abutment rib (292), wherein the abutment rib (292) is fixed in at least one of the multi-channel conducting cavity (28), the circumferential outer conducting cavity (232), and the axial outer conducting cavity (231); along the radial direction of the valve body (1), the outer side surface of the abutment rib (292) and the outer side surface of the second conducting portion (25) are on the same annular surface, and the outer side surface of the abutment rib (292) abuts against the first sealing member (6) between adjacent avoidance channels, and the inner side surface of the abutment rib (292) is spaced apart from the first conducting portion (24).

10. The control valve according to any one of claims 3 to 9, characterized in that: The selection channel (13) comprises a first channel (131), a second channel (132), a third channel (133), a fourth channel (134), a fifth channel (135), and a sixth channel (136); the first channel (131), the second channel (132), and the third channel (133) are located at a first axial height and are spaced apart from each other; the fourth channel (134), the fifth channel (135), and the sixth channel (136) are located at a second axial height and are spaced apart from each other; the first channel (131) and the fourth channel (134) are located on the same axial direction, the second channel (132) and the fifth channel (135) are located on the same axial direction, and the third channel (133) and the sixth channel (136) are located on the same axial direction.

11. The control valve according to claim 10, characterized in that The control valve includes at least one of six working modes; The first working mode: the first channel (131) is connected to the normally open channel (12), the fourth channel (134) is connected to the second channel (132), the fifth channel (135) is blocked, and the third channel (133) is connected to the sixth channel (136); The second working mode: the first channel (131) is connected to the second channel (132), the fourth channel (134) is connected to the normally open channel (12), the fifth channel (135) is blocked, and the third channel (133) is connected to the sixth channel (136); A third working mode: the fourth channel (134), the first channel (131), and the sixth channel (136) are blocked, the third channel (133) is connected to the second channel (132), and the fifth channel (135) is connected to the normally open channel (12); Fourth working mode: the fourth channel (134) is blocked, the first channel (131) is connected to the second channel (132), the third channel (133) is connected to the sixth channel (136), and the fifth channel (135) is connected to the normally open channel (12); Fifth working mode: the fourth channel (134) is blocked, the fifth channel (135) is connected to the second channel (132), the third channel (133) is connected to the sixth channel (136), and the first channel (131) is connected to the normally open channel (12); Sixth working mode: the fourth channel (134) is blocked, the first channel (131) is connected to the second channel (132), the fifth channel (135) is connected to the sixth channel (136), and the third channel (133) is connected to the normally open channel (12).

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