Valve device
By designing a dual-valve-core structure and an electric drive system in the valve device, the problem of jamming caused by unstable valve operation was solved, stable oil circuit connection was achieved, and conveying efficiency was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA NAT PETROLEUM CORP
- Filing Date
- 2024-10-15
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, valve devices are prone to jamming when their operation is unstable, which prevents oil from passing through the pipeline and affects the conveying efficiency.
Design a valve device comprising a first valve core and a second valve core, which respectively control the first and second drain channels, and slide through an electric drive device and a manual control unit to ensure that when either valve core is stuck, the other valve core can open the corresponding channel to ensure oil circuit continuity.
It improves the operational stability of the valve device, ensuring stable oil circuit connectivity when needed and avoiding delivery interruptions caused by a single valve core jamming.
Smart Images
Figure CN121876175A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of valve design technology, and more particularly to a valve device. Background Technology
[0002] In the transportation of oil and natural gas, pipelines require high-performance valve devices. Related technologies involve installing valve devices on pipelines. These valve devices control the flow of fluids in the pipeline by opening or closing them.
[0003] However, the valve devices in this technology suffer from operational instability. During the opening process, the valve may jam, preventing it from opening and thus blocking the flow of oil in the pipeline. If this occurs, operators must disassemble the valve device for repair, which affects the oil delivery efficiency of the pipeline. Summary of the Invention
[0004] This invention discloses a valve device to solve the problem of poor conveying efficiency in conveying pipelines caused by unstable operation of the valve device in related technologies.
[0005] To address the aforementioned technical problems, the present invention discloses the following technical solutions:
[0006] This invention discloses a valve device, which includes a valve body and a first valve core and a second valve core slidably disposed on the valve body, wherein:
[0007] The valve body is provided with an inlet, an outlet, and a first and a second outlet channel connected in parallel and respectively connected to the outlet.
[0008] The first valve core can be slidably opened or closed by the first drainage channel; the second valve core can be slidably opened or closed by the second drainage channel;
[0009] When the first drainage channel is opened, the first drainage channel connects the inlet and the outlet; when the second drainage channel is opened, the second drainage channel connects the inlet and the outlet.
[0010] In one embodiment, the valve body is further provided with an inlet channel and a connecting channel, the inlet channel connecting the connecting channel and the inlet;
[0011] The connecting channel includes a first orifice and a second orifice distributed opposite to each other. The first valve core is used to cooperate with the first orifice to close the first drainage channel by blocking the first orifice or to open the first drainage channel by opening the first orifice.
[0012] The second valve core is used to cooperate with the second orifice to close the second drainage channel by blocking the second orifice or to open the second drainage channel by opening the second orifice.
[0013] In one embodiment, the valve device further includes an electric drive device and a first sealing structure, wherein a first end of the first valve core extends into the valve body and is used to engage with the first orifice, and a second end of the first valve core extends through the first sealing structure to the outside of the valve body and is connected to the electric drive device, the electric drive device being mounted on the valve body and used to drive the first valve core to slide.
[0014] In one embodiment, the first end of the first valve core is a tapered end, and the sliding of the first valve core can adjust the depth of the tapered end in the first orifice so as to adjust the opening of the first drainage channel by adjusting the opening of the first orifice.
[0015] In one embodiment, the valve device further includes a mounting bracket fixed to the valve body;
[0016] The electric drive device includes a device body and a power output shaft. The device body is fixed on the mounting bracket. The power output shaft is connected to the device body and to the second end of the first valve core. The power output shaft is used to drive the first valve core to slide.
[0017] In one embodiment, the main body of the device includes a servo motor, a planetary reducer, a threaded rod, and a guide assembly, wherein:
[0018] The servo motor is connected to the threaded rod via the planetary reducer to drive the threaded rod to rotate; the power output shaft is a threaded sleeve, the threaded rod and the threaded sleeve are threadedly engaged, the threaded sleeve is fixedly connected to the guide assembly, the guide assembly and the mounting bracket are axially engaged with the threaded rod; the threaded sleeve is fixedly connected to the second end of the first valve core.
[0019] In one embodiment, the threaded sleeve is connected to the first valve core via a coupling. The guide assembly includes a connecting limiting plate and a guide rod. The connecting limiting plate has a connecting hole, through which the threaded sleeve passes and is fixedly connected to the connecting limiting plate. The first end of the guide rod is fixedly connected to the connecting limiting plate. The mounting bracket includes a first guide sleeve, and the second end of the guide rod passes through the first guide sleeve and slides in a guiding engagement with the first guide sleeve. The connecting limiting plate moves with the threaded sleeve to limit engagement with the mounting bracket in a first direction and with the coupling in a second direction, wherein the first direction is opposite to the second direction.
[0020] In one embodiment, the main body of the device further includes a second guide sleeve, which is supported between the mounting bracket and the planetary reducer. The threaded rod passes through the second guide sleeve and is threadedly engaged with the threaded sleeve. The threaded sleeve is slidably engaged with the second guide sleeve.
[0021] In one embodiment, the valve device further includes a manual control unit and a second sealing structure. The first end of the second valve core extends into the valve body and is used to engage with the second orifice. The second end of the second valve core passes through the second sealing structure and is connected to the manual control unit. The valve body has a threaded hole, and the manual control unit is threadedly engaged with the threaded hole.
[0022] In one embodiment, the valve device has a first state, a second state, and a third state, wherein:
[0023] When the valve device is in the first state, the first valve core opens the first drainage channel, and the second valve core closes the second drainage channel;
[0024] When the valve device is in the second state, the first valve core closes the first drain channel, and the second valve core opens the second drain channel;
[0025] When the valve device is in the third state, the first valve core opens the first drainage channel, and the second valve core opens the second drainage channel.
[0026] The technical solutions disclosed in the embodiments of the present invention have the following technical effects:
[0027] In the specific operation process, the first valve core can be controlled to close the first drain channel and the second valve core to close the second drain channel. When the valve device needs to be opened, if the first valve core cannot open the first drain channel, the second valve core can be driven to open the second drain channel, thus connecting the inlet to the outlet through the second drain channel. In this case, since the second drain channel connects the inlet and outlet, the valve device will not fail to achieve oil circuit connectivity due to the first valve core's inability to open the first drain channel. Similarly, if the second valve core cannot open the second drain channel, the first valve core can be driven to open the first drain channel, thus connecting the inlet to the outlet through the first drain channel. In this case, since the first drain channel connects the inlet and outlet, the valve device will not fail to achieve oil circuit connectivity due to the second valve core's inability to open the second drain channel.
[0028] The valve device disclosed in this invention improves the structure of the valve device by including a first valve core and a second valve core, and by providing a first drain channel and a second drain channel in the valve body, which are respectively controlled by the first valve core and the second valve core. Therefore, the valve device disclosed in this invention undoubtedly improves the stability of the valve device's operation, ensuring stable connection of the oil circuit when needed. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the valve device disclosed in an embodiment of the present invention;
[0030] Figure 2 This is a partial structural schematic diagram of the valve device disclosed in an embodiment of the present invention;
[0031] Figure 3 This is a schematic diagram of the mounting bracket disclosed in an embodiment of the present invention;
[0032] Figure 4 This is an exploded view of a portion of the structure of the valve device disclosed in an embodiment of the present invention;
[0033] Figure 5 This is a schematic diagram of the structure of the guide component disclosed in the embodiment of the present invention.
[0034] The components in the diagram are labeled as follows:
[0035] 10-Valve body,
[0036] 20-First valve core, 21-Conical end,
[0037] 30-Second valve core,
[0038] 40-Electric drive unit, 41-Main body of the device, 411-Servo motor, 412-Planetary reducer, 413-Threaded rod, 414-Second guide sleeve, 415-Guide assembly, 4151-Connecting limit plate, 4152-Guide rod, 4153-Connecting hole, 416-Coupling, 42-Power output shaft,
[0039] 50 - First sealing structure
[0040] 60-Mounting bracket, 61-First guide sleeve, 62-Top plate, 63-Bottom plate, 64-Connecting rod, 65-Nut, 70-Manual control unit, 80-Second sealing structure,
[0041] 01-Inlet, 02-Outlet, 03-First outlet channel, 04-Second outlet channel, 05-Inlet channel, 06-Connecting channel, 07-Threaded hole. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.
[0043] The technical solutions disclosed in the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0044] Please refer to Figures 1 to 5 This invention discloses a valve device. The disclosed valve device includes a valve body 10, a first valve core 20, and a second valve core 30.
[0045] The valve body 10 is the main body of the valve device. The valve body 10 provides mounting positions for other components of the valve device. In this embodiment of the invention, both the first valve core 20 and the second valve core 30 are slidably mounted on the valve body 10, allowing them to slide relative to the valve body 10 during operation. The valve body 10 also forms functional spaces; specifically, it includes an inlet 01, a outlet 02, a first drain channel 03, and a second drain channel 04. The first drain channel 03 and the second drain channel 04 are connected in parallel and communicate with the outlet 02 respectively.
[0046] In the specific working process, the liquid entering the inlet 01 of the valve body 10 can enter the outlet 02 through the first drain channel 03 and be discharged through the outlet 02. The liquid entering the inlet 01 of the valve body 10 can also enter the outlet 02 through the second drain channel 04 and be discharged through the outlet 02.
[0047] The first valve core 20 can be slid to open or close the first drainage channel 03. The second valve core 30 can also be slid to open or close the second drainage channel 04. That is to say, the first valve core 20 and the second valve core 30 can control the opening and closing of the first drainage channel 03 and the second drainage channel 04 respectively by sliding.
[0048] When the first drainage channel 03 is opened, it connects the inlet 01 and the outlet 02. Conversely, when the first drainage channel 03 is closed, it cannot connect the inlet 01 and the outlet 02.
[0049] When the second drainage channel 04 is opened, it connects the inlet 01 and the outlet 02. Conversely, when the second drainage channel 04 is closed, it cannot connect the inlet 01 and the outlet 02.
[0050] The working process of the valve device disclosed in this embodiment of the invention is as follows:
[0051] In the specific working process, the first valve core 20 can be controlled to close the first drain channel 03 and the second valve core 30 can be controlled to close the second drain channel 04. When the valve device needs to be opened, if the first valve core 20 cannot open the first drain channel 03, the second valve core 30 can be driven to open the second drain channel 04, so that the inlet 01 is connected to the drain port 02 through the second drain channel 04. In this case, since the second drain channel 04 will connect the inlet 01 and the drain port 02, the valve device will not fail to achieve the problem of oil circuit connection due to the first valve core 20 being unable to open the first drain channel 03. Similarly, if the second valve core 30 cannot open the second drain channel 04, it can drive the first valve core 20 to open the first drain channel 03, thereby allowing the inlet 01 to connect to the drain port 02 through the first drain channel 03. In this case, since the first drain channel 03 connects the inlet 01 and the drain port 02, the valve device will not fail to achieve oil circuit connection due to the second valve core 30's inability to open the second drain channel 04.
[0052] The valve device disclosed in this embodiment of the invention improves the structure of the valve device, making it include a first valve core 20 and a second valve core 30, and enabling the valve body 10 to have a first drain channel 03 and a second drain channel 04, which are respectively controlled by the first valve core 20 and the second valve core 30. Therefore, the valve device disclosed in this embodiment of the invention undoubtedly improves the stability of the valve device's operation, ensuring that the oil circuit can be stably connected when needed.
[0053] When the first drain channel 03 is opened, it communicates with the inlet 01. When the second drain channel 04 is opened, it communicates with the inlet 01. In one embodiment, the valve body 10 may have a structure where the first drain channel 03 and the second drain channel 04 are each configured to communicate with the inlet 01, thereby achieving independent communication with the inlet 01. In another embodiment, the valve body 10 may have a shared channel, through which the first drain channel 03 and the second drain channel 04 can communicate with the inlet 01. This embodiment of the invention is not limited in its scope.
[0054] In a more specific embodiment, the valve body 10 disclosed in this embodiment of the invention may be provided with an inlet channel 05 and a connecting channel 06. The common channel mentioned above may include the inlet channel 05 and the connecting channel 06. The inlet channel 05 may connect the connecting channel 06 and the inlet port 01.
[0055] The connecting channel 06 may include a first orifice and a second orifice distributed opposite to each other. A first valve core 20 is used to cooperate with the first orifice to close the first drainage channel 03 by blocking the first orifice or to open the first drainage channel 03 by opening the first orifice. A second valve core 30 is used to cooperate with the second orifice to close the second drainage channel 04 by blocking the second orifice or to open the second drainage channel 04 by opening the second orifice.
[0056] In this structure, the first valve core 20 and the second valve core 30 can cooperate with the connecting channel 06 to control the opening and closing of the first drain channel 03 and the second drain channel 04 respectively, thus eliminating the need to open more channels in the valve body 10. This avoids the problem of weak strength caused by opening too many channels in the valve body 10.
[0057] There are various ways to drive the sliding of the first valve core 20 and the second valve core 30, and the embodiments of the present invention are not limited thereto. In one embodiment, the valve device disclosed in the embodiments of the present invention may further include an electric drive device 40 and a first sealing structure 50. The first end of the first valve core 20 may extend into the valve body 10 and be used to cooperate with the first orifice of the connecting channel 06. The second end of the first valve core 20 passes through the first sealing structure 50 and extends out of the valve body 10 and is connected to the electric drive device 40. The electric drive device 40 is mounted on the valve body 10 and is used to drive the first valve core 20 to slide. The sliding of the first valve core 20 can realize the opening or closing of the first drain channel 03. The electric drive device 40 may be a linear motor, a hydraulic telescopic component, a pneumatic telescopic component, a lead screw mechanism, etc., and the embodiments of the present invention do not limit the specific type of electric drive device 40. The first sealing structure 50 realizes the sealing between the first valve core 20 and the valve body 10, ensuring that the oil does not leak from the valve body 10 during the sliding of the first valve core 20.
[0058] Similarly, in this embodiment of the invention, an electric drive device 40 can also be configured for the second valve core 30. In this case, the first valve core 20 and the second valve core 30 are respectively driven to slide by the electric drive device 40 connected to them.
[0059] As described above, the first valve core 20 controls the opening or closing of the first drain channel 03 by cooperating with the first orifice. In a further embodiment, the first valve core 20 can also be designed to not only control the opening or closing of the first drain channel 03, but also to control the opening degree of the first drain channel 03. Based on this, in one embodiment, the first end of the first valve core 20 can be a tapered end 21. The sliding adjustment of the tapered end 21 of the first valve core 20 adjusts the depth in the first orifice, so as to adjust the opening degree of the first drain channel 03 by adjusting the opening degree of the first orifice. This structure enables the valve device to not only perform the function of a simple on / off valve, but also to perform the function of regulating the flow rate of the oil. Similarly, the second valve core 30 can also be designed to control the opening degree of the second orifice by adjusting the sliding stroke, thereby indirectly controlling the opening degree of the second drain channel 04. This embodiment of the invention is not limited to this.
[0060] The electric drive device 40 can be directly mounted on the valve body 10 or indirectly mounted on the valve body 10. This embodiment of the invention is not limited to this. In one embodiment, the valve device disclosed in this invention may further include a mounting bracket 60. The mounting bracket 60 is fixed to the valve body 10. The electric drive device 40 may include a device body 41 and a power output shaft 42.
[0061] The main body 41 of the device is fixed to the mounting bracket 60. A power output shaft 42 can be connected to the main body 41 and is connected to the second end of the first valve core 20. The power output shaft 42 is used to drive the first valve core 20 to slide. In actual operation, the main body 41 drives the power output shaft 42 to move, thereby causing the power output shaft 42 to drive the first valve core 20 to slide.
[0062] In embodiments where the electric drive device 40 is a linear motor, the device body 41 can be the body of the linear motor. In other embodiments, the device body 41 may include a servo motor 411, a planetary reducer 412, a threaded rod 413, and a guide assembly 415.
[0063] The servo motor 411 is connected to the threaded rod 413 via a planetary reducer 412 to drive the threaded rod 413 to rotate. The planetary reducer 412 performs the function of speed reduction. The power output shaft 42 is a threaded sleeve. The threaded rod 413 is threadedly engaged with the threaded sleeve. The threaded sleeve is fixedly connected to the guide assembly 415. The guide assembly 415 and the mounting bracket 60 are slidably engaged in a direction parallel to the axial direction of the threaded rod 413. The threaded sleeve is fixedly connected to the second end of the first valve core 20. Because the threaded sleeve is fixed to the guide assembly 415, during the rotation of the threaded rod 413, the threaded rod 413 will only extend into the threaded sleeve, driving the threaded sleeve to move along its axial direction without rotating around its axial direction. This structure can form a lead screw mechanism, so that the servo motor 411 drives the threaded rod 413 to rotate via the planetary reducer 412, which in turn drives the threaded sleeve to move. The movement of the threaded sleeve will cause the first valve core 20 to slide along with it, ultimately achieving the driving of the first valve core 20. In this structure, the rotation of the threaded rod 413 is converted into the linear movement of the threaded sleeve through the threaded engagement, thereby enabling more precise driving of the first valve core 20.
[0064] In one embodiment, the bare torque of the servo motor 411 can be 12 NM. After being reduced to 30:1 by the planetary reducer 412, the torque can reach 300 NM, thus achieving a more powerful drive. At the same time, compared with other common types of gear reducers (such as worm gear reducers, cylindrical gear reducers, etc.), the planetary reducer 412 has advantages such as less wear and less susceptibility to damage, a larger reduction range, fewer dead zones in the control of the first valve core 20, and faster drive response to the first valve core 20 (measured in milliseconds).
[0065] In this embodiment of the invention, the threaded sleeve can be directly connected to the first valve core 20 or indirectly connected. Therefore, in one embodiment, the threaded sleeve and the first valve core 20 can be connected via a coupling 416. The guide assembly 415 may include a connecting limiting plate 4151 and a guide rod 4152. The connecting limiting plate 4151 has a connecting hole 4153. The threaded sleeve passes through the connecting hole 4153 and is fixedly connected to the connecting limiting plate 4151.
[0066] The first end of the guide rod 4152 is fixedly connected to the connecting limiting plate 4151. The mounting bracket 60 may include a first guide sleeve 61, and the second end of the guide rod 4152 passes through the first guide sleeve 61 and slides in a guiding engagement with the first guide sleeve 61. The axial direction of the guide rod 4152 is parallel to the axial direction of the threaded sleeve.
[0067] The connecting limiting plate 4151 can move with the threaded sleeve to limit engagement with the mounting bracket 60 in a first direction and with the coupling 416 in a second direction. It should be noted that the first direction and the second direction are opposite. The first and second directions are parallel to the axial direction of the guide rod 4152, respectively.
[0068] In this configuration, coupling 416 not only connects the first valve core 20 to the threaded sleeve, but also engages with the connecting limiting plate 4151 in the second direction to limit movement of the threaded sleeve. In this structure, the connecting limiting plate 4151 engages with the mounting bracket 60 in the first direction, thereby preventing excessive movement of the threaded sleeve in that direction.
[0069] In this embodiment of the invention, the structure of the mounting bracket 60 can be varied, and this embodiment of the invention does not limit the specific type of mounting bracket 60. Please refer to... Figure 1 and Figure 3 In one specific embodiment, the mounting bracket 60 may further include a top plate 62, a bottom plate 63, connecting rods 64, and nuts 65. The top plate 62 is located above the bottom plate 63, and there may be multiple connecting rods 64 (e.g., Figure 3 As shown in the diagram (4), multiple connecting rods 64 are spaced apart. The first end of each connecting rod 64 is fixedly connected to the base plate 63 (e.g., by welding). The second end of each connecting rod 64 is a threaded connection end, which passes through a hole in the top plate 62 and engages with a corresponding nut 65. This allows the top plate 62 to be supported by multiple connecting rods 64 while also being fixedly connected to the second ends of the multiple connecting rods 64. The first guide sleeve 61 mentioned above can be provided on the top plate 62, with its sleeve hole penetrating the top plate 62. The first end of the guide rod 4152 is fixedly connected to the connecting limiting plate 4151, and the second end of the guide rod 4152 passes through the first guide sleeve 61 and slides in a guiding engagement with the first guide sleeve 61. The first valve core 20 can pass through the base plate 63 and connect to a threaded sleeve extending between the top plate 62 and the base plate 63. This type of mounting bracket 60 has the advantages of simple structure and easy assembly.
[0070] As described above, the second valve core 30 can be driven by a specially configured electric drive device 40. In other embodiments, the valve device disclosed in this invention may also include a manual control unit 70 and a second sealing structure 80.
[0071] The first end of the second valve core 30 extends into the valve body 10 and engages with the second orifice. The second end of the second valve core 30 passes through the second sealing structure 80 and is connected to the manual control part 70. The valve body 10 may have a threaded hole 07, and the manual control part 70 may be threaded into the threaded hole 07. In actual use, the operator can manually rotate the manual control part 70, thereby moving the manual control part 70 along the threaded hole 07, which in turn drives the second valve core 30 to slide. The second sealing structure 80 achieves a seal between the second valve core 30 and the valve body 10, thus preventing oil leakage during the sliding process of the second valve core 30.
[0072] To improve the stability of the threaded sleeve movement, in one embodiment, the valve device disclosed in this invention may further include a second guide sleeve 414. The second guide sleeve 414 is supported between the mounting bracket 60 and the planetary reducer 412. The threaded rod 413 passes through the second guide sleeve 414 and is threadedly engaged with the threaded sleeve, while the threaded sleeve and the second guide sleeve 414 are slidably engaged. In this structure, the second guide sleeve 414 not only guides the sliding of the threaded sleeve and provides a sliding base for it, but also, being supported between the mounting bracket 60 and the planetary reducer 412, allows the planetary reducer 412 to be indirectly mounted on the valve body 10 based on the mounting bracket 60. Simultaneously, since the servo motor 411 is connected to the planetary reducer 412, the second guide sleeve 414 can also enable the indirect mounting of the servo motor 411 and the planetary reducer 412 on the valve body 10.
[0073] The valve device disclosed in the embodiments of the present invention may have a first state, a second state, and a third state.
[0074] When the valve device is in the first state, the first valve core 20 opens the first drain channel 03 and the second valve core 30 closes the second drain channel 04. In this case, the valve device realizes the delivery of oil through the first drain channel 03.
[0075] When the valve device is in the second state, the first valve core 20 closes the first drain channel 03, and the second valve core 30 opens the second drain channel 04. In this case, the valve device delivers oil through the second drain channel 04.
[0076] When the valve device is in the third state, the first valve core 20 opens the first drain channel 03, and the second valve core 30 opens the second drain channel 04. In this case, the valve device delivers oil through the first drain channel 03 and the second drain channel 04. At this time, the valve device is in a fully open state, thereby enabling a larger flow rate of oil delivery.
[0077] In other embodiments, the valve device disclosed in this invention may also have a fourth state. When the valve device is in the fourth state, the first valve core 20 closes the first drain channel 03, and the second valve core 30 closes the second drain channel 04. At this time, the valve device is in a fully closed state, thereby stopping the flow of oil.
[0078] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.
Claims
1. A valve device, characterized in that, Includes a valve body (10) and a first valve core (20) and a second valve core (30) slidably disposed on the valve body (10), wherein: The valve body (10) is provided with an inlet (01), an outlet (02), and a first outlet channel (03) and a second outlet channel (04) connected in parallel and respectively connected to the outlet (02); The first valve core (20) can be slidably opened or closed by the first drainage channel (03); the second valve core (30) can be slidably opened or closed by the second drainage channel (04); When the first drainage channel (03) is opened, the first drainage channel (03) connects the inlet (01) and the outlet (02); when the second drainage channel (04) is opened, the second drainage channel (04) connects the inlet (01) and the outlet (02).
2. The valve device according to claim 1, characterized in that, The valve body (10) is also provided with a liquid inlet channel (05) and a connecting channel (06), wherein the liquid inlet channel (05) connects the connecting channel (06) and the liquid inlet (01); The connecting channel (06) includes a first orifice and a second orifice distributed opposite to each other. The first valve core (20) is used to cooperate with the first orifice to close the first drainage channel (03) by blocking the first orifice or to open the first drainage channel (03) by opening the first orifice. The second valve core (30) is used to cooperate with the second orifice to close the second drain channel (04) by blocking the second orifice or to open the second drain channel (04) by opening the second orifice.
3. The valve device according to claim 2, characterized in that, The valve device further includes an electric drive device (40) and a first sealing structure (50). The first end of the first valve core (20) extends into the valve body (10) and is used to cooperate with the first orifice. The second end of the first valve core (20) passes through the first sealing structure (50) and extends out of the valve body (10) and is connected to the electric drive device (40). The electric drive device (40) is installed on the valve body (10) and is used to drive the first valve core (20) to slide.
4. The valve device according to claim 3, characterized in that, The first end of the first valve core (20) is a tapered end (21). The sliding of the first valve core (20) can adjust the depth of the tapered end (21) in the first orifice so as to adjust the opening of the first drainage channel (03) by adjusting the opening of the first orifice.
5. The valve device according to claim 3, characterized in that, The valve device further includes a mounting bracket (60) which is fixed to the valve body (10); The electric drive device (40) includes a device body (41) and a power output shaft (42). The device body (41) is fixed on the mounting bracket (60). The power output shaft (42) is connected to the device body (41) and to the second end of the first valve core (20). The power output shaft (42) is used to drive the first valve core (20) to slide.
6. The valve device according to claim 5, characterized in that, The main body (41) of the device includes a servo motor (411), a planetary reducer (412), a threaded rod (413), and a guide assembly (415), wherein: The servo motor (411) is connected to the threaded rod (413) via the planetary reducer (412) to drive the threaded rod (413) to rotate; the power output shaft (42) is a threaded sleeve, the threaded rod (413) is threadedly engaged with the threaded sleeve, the threaded sleeve is fixedly connected to the guide assembly (415), the guide assembly (415) and the mounting bracket (60) are slidably engaged in a direction parallel to the axial direction of the threaded rod (413); the threaded sleeve is fixedly connected to the second end of the first valve core (20).
7. The valve device according to claim 6, characterized in that, The threaded sleeve is connected to the first valve core (20) via a coupling (416). The guide assembly (415) includes a connecting limiting plate (4151) and a guide rod (4152). The connecting limiting plate (4151) has a connecting hole (4153). The threaded sleeve passes through the connecting hole (4153) and is fixedly connected to the connecting limiting plate (4151). The first end of the guide rod (4152) is fixedly connected to the connecting limiting plate (4151). The mounting bracket (60) includes a first guide sleeve (61). The second end of the guide rod (4152) passes through the first guide sleeve (61) and slides in a guiding engagement with the first guide sleeve (61). The connecting limiting plate (4151) moves with the threaded sleeve to limit engagement with the mounting bracket (60) in a first direction and with the coupling (416) in a second direction. The first direction is opposite to the second direction.
8. The valve device according to claim 6, characterized in that, The main body (41) of the device also includes a second guide sleeve (414), which is supported between the mounting bracket (60) and the planetary reducer (412). The threaded rod (413) passes into the second guide sleeve (414) and is threadedly engaged with the threaded sleeve. The threaded sleeve is slidably engaged with the second guide sleeve (414).
9. The valve device according to claim 2, characterized in that, The valve device further includes a manual control unit (70) and a second sealing structure (80). The first end of the second valve core (30) extends into the valve body (10) and is used to cooperate with the second orifice. The second end of the second valve core (30) passes through the second sealing structure (80) and is connected to the manual control unit (70). The valve body (10) has a threaded hole (07), and the manual control unit (70) is threadedly engaged with the threaded hole (07).
10. The valve device according to any one of claims 1 to 9, characterized in that, The valve device has a first state, a second state, and a third state, wherein: When the valve device is in the first state, the first valve core (20) opens the first drain channel (03), and the second valve core (30) closes the second drain channel (04); When the valve device is in the second state, the first valve core (20) closes the first drain channel (03), and the second valve core (30) opens the second drain channel (04); When the valve device is in the third state, the first valve core (20) opens the first drain channel (03), and the second valve core (30) opens the second drain channel (04).