A valve device

Abstract

This utility model discloses a valve device, including a valve body, a nut component, a spring component, a stop component, and a rotor component. The valve body has a valve port. The nut component is fixedly connected or limited to the valve body, and the nut component has a first slot and a second slot, with the second slot closer to the valve port than the first slot. The spring component forms a helical slide, and one end of the spring component has a locking part. The ratio of the axial distance between the first and second slots to the pitch of the spring component is a positive integer. The spring component has a first position and a second position. In the first position, the locking part engages with the first slot; in the second position, the locking part engages with the second slot. The stop component is slidably mounted on the helical slide, with one end of the stop component abutting against a stop block circumferentially, and the other end of the stop component abutting against the rotor component circumferentially. The above-described valve device can relatively conveniently and accurately adjust the lower stop position of the valve core.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration control technology, specifically to a valve device. Background Technology

[0002] Electronic expansion valves and other similar valve devices are commonly used in air conditioning systems to regulate the flow rate of refrigerant. In some scenarios, when the valve core is at its bottom dead center, the valve core and the valve port do not directly contact each other, but maintain a certain gap, allowing the refrigerant to pass through the valve port at a relatively small flow rate.

[0003] Therefore, how to provide a valve device that allows for relatively accurate and convenient adjustment of the lower stop position of the valve core during subsequent assembly remains a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a valve device that can relatively conveniently and accurately adjust the lower stop position of the valve core.

[0005] To solve the above-mentioned technical problems, this utility model provides a valve device, including a valve body, and a nut component, a spring component, a stop component, and a rotor component disposed within the valve body; the valve body is provided with a valve port; the nut component is fixedly connected or limitedly connected to the valve body, the nut component is provided with at least two axially spaced slots, each slot having a first slot and a second slot, the second slot being closer to the valve port than the first slot; the spring component forms a helical slide, and one end of the spring component is provided with a snap-fit ​​portion; the ratio of the axial distance between the first slot and the second slot to the pitch of the spring component is a positive integer; the spring component has a first position and a second position; in the first position, the snap-fit ​​portion snaps into the first slot; in the second position, the snap-fit ​​portion snaps into the second slot; the stop component is slidably assembled on the helical slide, the valve body or the nut component is provided with a stop block, one end of the stop component is used to abut against the stop block circumferentially, and the other end of the stop component is used to abut against the rotor component circumferentially.

[0006] This embodiment of the invention provides a first and a second slot on the nut component, and sets the axial distance between the first and second slots to an integer multiple of the spring component's pitch. This allows the spring component to switch between a first and a second position, simultaneously driving the stop component to move axially. Thus, without the need for a push rod, the lower stop position of the valve core can be adjusted relatively conveniently, and the adjustment of the lower stop position is relatively accurate. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a valve device, in which the valve core is at the bottom dead center;

[0008] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0009] Figure 3 This is a structural diagram of the spring and nut components during the assembly process in related technologies;

[0010] Figure 4 for Figure 3 A structural diagram after assembly;

[0011] Figure 5 for Figure 4 A structural diagram showing the assembly process of the spring and nut components with the lead screw, valve core, and valve seat after assembly.

[0012] Figure 6 for Figure 5 A structural diagram after assembly;

[0013] Figure 7 for Figure 6 Structural diagram of the spring component and the stop component during assembly;

[0014] Figure 8 for Figure 7 A structural diagram after assembly;

[0015] Figure 9 This is a schematic diagram of the rotor section;

[0016] Figure 10 for Figure 8 A schematic diagram of the screw and rotor section after assembly;

[0017] Figure 11 for Figure 8 A schematic diagram of the structure of the lead screw and rotor during the assembly process;

[0018] Figure 12 This is a schematic diagram of the spring component and nut component during the assembly process in an embodiment of this utility model;

[0019] Figure 13 for Figure 12 A magnified view of a portion of the image;

[0020] Figure 14 This is a schematic diagram of the spring component.

[0021] Figure 15 This is a schematic diagram of the structure when the spring component is in the first position and the rotor component rotates clockwise for the first time until the stop element and the stop component come into contact.

[0022] Figure 16 for Figure 15 A magnified view of a portion of the image;

[0023] Figure 17 This is a schematic diagram of the structure when the spring component is in the first position and the rotor component drives the stop component to reverse through the stop element;

[0024] Figure 18 for Figure 17 A partial front view of the mating point between the stop element and the stop component;

[0025] Figure 19 for Figure 17 A schematic diagram of the structure of the spring component of the central valve device when it is switched to the second position;

[0026] Figure 20 for Figure 19 A magnified view of a portion of the image;

[0027] Figure 21 for Figure 19 A schematic diagram of the structure of the rotor component of the central valve device when it rotates clockwise again until the stop element and the stop component come into contact.

[0028] The labeling in some of the accompanying drawings is explained below:

[0029] 1000-Valve body; 1100-Valve seat; 1110-Valve port; 1111-Valve port; 1120-Valve cavity; 1200-Cover;

[0030] 2000 - Nut component; 2100 - Connecting section; 2200 - Mounting section; 2210 - Neck; 2211 - First protrusion; 2211A - Protrusion; 2212 - Second protrusion; 2213 - Slot; 2213A - First slot; 2213B - Second slot; 2214 - Connecting groove; 2215 - Stop block; 2220 - Wide neck;

[0031] 3000 - Spring component; 3100 - Body part; 3110 - Helical slide; 3200 - Transition connection part; 3300 - Snap-fit ​​part; 3310 - First rod part; 3320 - Second rod part;

[0032] 4000 - Stop component;

[0033] 5000 - Rotor assembly; 5100 - Rotor section; 5110 - Stopping element; 5200 - Lead screw; 5300 - Valve core;

[0034] 6000 - Takeover. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the description of the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0037] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0038] In the description of embodiments of this utility model, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0039] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a valve device, in which the valve core is at the bottom dead center; Figure 2 for Figure 1 A magnified view of a portion of the image.

[0040] like Figure 1 As shown, this utility model embodiment provides a valve device, which can specifically be an electronic expansion valve, etc., and can be applied to an air conditioning system to regulate the flow rate of the refrigerant. The valve device includes a valve body 1000, a nut component 2000, a spring component 3000, a stop component 4000, a rotor component 5000, and a connecting pipe 6000, wherein the nut component 2000, spring component 3000, stop component 4000, and rotor component 5000 are all disposed within the valve body 1000.

[0041] The valve body 1000 may include a valve seat 1100 and a cover 1200. The valve seat 1100 may be integrally formed with a valve port 1110, which may have a valve port 1111. Alternatively, the valve seat 1100 may be a split design, including a seat base and the aforementioned valve port 1110. The valve port 1110 may be connected to the seat base by welding or other methods. A valve cavity 1120 is also formed within the valve seat 1100. The cover 1200 may be installed on the valve seat 1100, for example, by welding.

[0042] The nut component 2000 and the valve seat 1100 are either fixedly connected or limited in a way that ensures no relative displacement occurs between them after connection. The nut component 2000 has at least a partial internal thread.

[0043] The spring component 3000 can be sleeved onto a local area of ​​the nut component 2000. Based on the structural shape of the spring component 3000, the spring component 3000 can be formed with a helical slide 3110.

[0044] A portion of the stop member 4000 may also be configured as a helical structure. Furthermore, the stop member 4000 can be slidably fitted into the helical slide 3110, allowing it to slide along the helical slide 3110 until one end of the stop member 4000 can be stopped and limited.

[0045] The rotor assembly 5000 may include a rotor section 5100, a lead screw 5200, and a valve core 5300. The rotor section 5100 and the lead screw 5200 are connected, for example, by welding. The rotor section 5100 can drive the lead screw 5200 to rotate. (See reference...) Figure 1 The rotor portion 5100 can be located entirely inside the housing 1200. In practical applications, a coil or similar component can also be provided on the outer side of the housing 1200. When the coil is energized, the rotor portion 5100 can be driven to rotate. The lead screw 5200 has at least a partial external thread for threaded connection with the nut component 2000. Furthermore, the lead screw 5200 is also connected to the valve core 5300. When the lead screw 5200 rotates relative to the nut component 2000, the lead screw 5200 can also drive the valve core 5300 to move axially along the valve device.

[0046] As can be seen, in practical applications, the displacement of the valve core 5300 driven by the lead screw 5200 is divided into two types: First, the lead screw 5200 drives the valve core 5300 to move relatively closer to the valve port 1111 along the axial direction of the valve device. In this embodiment of the present invention, the rotation of the lead screw 5200 and the rotor 5100 in this process can be referred to as clockwise rotation. Second, the lead screw 5200 drives the valve core 5300 to move relatively away from the valve port 1111 along the axial direction of the valve device. In this embodiment of the present invention, the rotation of the lead screw 5200 and the rotor 5100 in this process can be referred to as counterclockwise rotation.

[0047] The rotor section 5100 may also be equipped with a stop element 5110, which may be a plate-shaped element, a rod-shaped element, etc. The stop element 5110 can rotate synchronously with the rotor section 5100.

[0048] There can be two 6000 connecting pipes. Both 6000 connecting pipes can be connected to the valve seat 1100, and the connection method can be welding, etc. Figure 1 One of the connecting pipes 6000 can be directly connected to the valve chamber 1120, and the other connecting pipe 6000 can be connected to the valve chamber 1120 through the valve port 1110. When the valve device is in the open state, the refrigerant can flow between the two connecting pipes 6000.

[0049] During the installation and commissioning of the valve device, when the rotor 5100 and lead screw 5200 rotate clockwise until the stop element 5110 and stop component 4000 abut circumferentially, the valve core 5300 can be at the bottom dead center position. At this time, the valve device can be in its minimum opening state. (Combined with...) Figure 2 In this embodiment of the utility model, there may be a certain gap between the valve core 5300 at the lower stop point and the valve port 1111, so that the refrigerant can still flow between the two pipes 6000 at a relatively small flow rate.

[0050] The following embodiments of this utility model will describe the adjustment process of the lower stop position of the valve core in the related art. In the schematic drawings of the related art, the reference numerals for the components of the valve device in the related art are generally consistent with those for the components of the valve device in this utility model embodiment. The difference is that the reference numerals for the components of the valve device in the related art are all distinguished by the addition of a "′". For example, in this utility model embodiment, the reference numeral for the valve seat is 1100, while in the drawings of the related art, the reference numeral for the valve seat is 1100′.

[0051] For details, please refer to Figures 3-11 , Figure 3 This is a structural diagram of the spring and nut components during the assembly process in related technologies; Figure 4 for Figure 3A structural diagram after assembly; Figure 5 for Figure 4 A structural diagram showing the assembly process of the spring and nut components with the lead screw, valve core, and valve seat after assembly. Figure 6 for Figure 5 A structural diagram after assembly; Figure 7 for Figure 6 Structural diagram of the spring component and the stop component during assembly; Figure 8 for Figure 7 A structural diagram after assembly; Figure 9 This is a schematic diagram of the rotor section; Figure 10 for Figure 8 A schematic diagram of the screw and rotor section after assembly; Figure 11 for Figure 8 A schematic diagram of the structure of the lead screw and rotor during the assembly process.

[0052] like Figure 3 and Figure 4 As shown, the nut component 2000' only has a slot 2213', and the spring component 3000' includes a snap-fit ​​portion 3300'. In actual assembly, the spring component 3000' can be first installed onto the nut component 2000', and the snap-fit ​​portion 3300' can be engaged into the slot 2213' to form a nut assembly.

[0053] like Figure 5 and Figure 6 As shown, the lead screw 5200' and valve core 5300' are installed on the aforementioned nut assembly. Specifically, the lead screw 5200' and nut component 2000' are threaded together, and the installation position of the lead screw 5200' on the nut assembly is initially adjusted to avoid impact between the valve core 5300' and valve port 1111' during subsequent installation of the nut assembly and valve seat 1100'. Then, the nut assembly and valve seat 1100' are connected.

[0054] Next, the lead screw 5200' can be rotated clockwise, allowing the valve core 5300' to gradually approach the valve port 1111' of the valve seat 1100' until the valve core 5300' contacts the valve port 1111'. Then, the lead screw 5200' can be reversed by a specific angle, such as 90 degrees, allowing a certain gap to exist between the valve core 5300' and the valve port 1111'. At this point, the position of the valve core 5300' is the bottom dead center position.

[0055] like Figure 7 and Figure 8As shown, a stop component 4000' is installed in the spiral slide 3110' of the spring component 3000', and the stop component 4000' is rotated clockwise (in the same direction as the clockwise rotation of the lead screw 5200') until one end of the stop component 4000' can abut against the locking part 3300', and the stop component 4000' is installed in place.

[0056] like Figure 9 and Figure 10 As shown, the rotor portion 5100' is fitted onto the lead screw 5200', and the rotor portion 5100' is rotated clockwise until the stop element 5110' abuts against the stop component 4000' circumferentially. At this point, the lead screw 5200' and the rotor portion 5100' are welded together, thus connecting the rotor component 5000' into a single unit. During subsequent use of the valve device, when the rotor portion 5100' rotates clockwise until the stop component 5110' and the stop component 4000' abut against each other circumferentially, the valve core 5300' can be at the bottom dead center position.

[0057] During the aforementioned process, before the rotor 5100' is installed, the valve core 5300' is at its bottom dead center position, and the valve core 5300' and valve port 1111' are not in contact, with the lower end of the valve core 5300' in a state of no external constraint. Therefore, during the installation and rotation of the rotor 5100', the rotor 5100' may drive the lead screw 5200' to rotate, which could cause a change in the distance between the valve core 5300' and valve port 1111', potentially affecting the accuracy of the bottom dead center position of the valve core 5300'.

[0058] like Figure 11 As shown, to avoid the above problems, a push rod 7000' can be added when initially adjusting the valve core 5300' to the bottom dead center position. The push rod 7000' can be inserted into the valve port 1110' through a connecting pipe 6000' and can abut against the valve core 5300' axially, thereby applying an external force constraint to the valve core 5300'. In this way, the valve core 5300' is less likely to rotate during the subsequent installation of the rotor 5100', which correspondingly improves the accuracy of the bottom dead center position of the valve core 5300' and ensures the consistency of the flow rate.

[0059] However, in some valve devices, the inner diameter of the valve port 1110' is relatively small, making it difficult to insert the push rod 7000'. If the push rod 7000' is made too thin, it will affect the rigidity of the push rod 7000', making it prone to deformation. This could cause the push rod 7000' to bend and deform within the valve port 1110', preventing it from reaching the valve core 5300'. Alternatively, even if the push rod 7000' can reach the valve core 5300', its constraint on the valve core 5300' is relatively limited. The valve core 5300', under the action of the rotor 5100', may cause the push rod 7000' to deform, leading to a change in the position of the valve core 5300'. Furthermore, during the contact between the push rod 7000' and the valve core 5300', damage to the valve core 5300' may occur, which is also undesirable.

[0060] In other words, the above-mentioned solution of setting the push rod 7000' has significant limitations. It is difficult to apply to valve devices with different parameter designs, and the operation requires the use of an additional push rod 7000', which is inconvenient.

[0061] To address this issue, this utility model provides a valve device, please refer to the following for details. Figures 12-21 , Figure 12 This is a schematic diagram of the spring component and nut component during the assembly process in an embodiment of this utility model; Figure 13 for Figure 12 A magnified view of a portion of the image; Figure 14 This is a schematic diagram of the spring component. Figure 15 This is a schematic diagram of the structure when the spring component is in the first position and the rotor component rotates clockwise for the first time until the stop element and the stop component come into contact. Figure 16 for Figure 15 A magnified view of a portion of the image; Figure 17 This is a schematic diagram of the structure when the spring component is in the first position and the rotor component drives the stop component to reverse through the stop element; Figure 18 for Figure 17 A partial front view of the mating point between the stop element and the stop component; Figure 19 for Figure 17 A schematic diagram of the structure of the spring component of the central valve device when it is switched to the second position; Figure 20 for Figure 19 A magnified view of a portion of the image; Figure 21 for Figure 19 A schematic diagram of the structure of the rotor component of the central valve device when it rotates clockwise again until the stop element and the stop component come into contact.

[0062] like Figure 12 and Figure 13As shown, in this embodiment of the present invention, the nut component 2000 is provided with at least two axially spaced slots 2213, and the number of slots 2213 is increased compared to solutions in related technologies. Furthermore, each slot 2213 includes a first slot 2213A and a second slot 2213B, with the second slot 2213B being closer to the valve port 1110 than the first slot 2213A. It should be understood that the number of slots 2213 can be only two; in this case, one slot 2213 can be the first slot 2213A, and the other slot 2213 can be the second slot 2213B. Alternatively, the number of slots 2213 can be three or more; in this case, the first slot 2213A and the second slot 2213B can be arbitrarily selected from among the slots 2213. The axial distance between the first slot 2213A and the second slot 2213B is denoted as L.

[0063] like Figure 14 As shown, the spring component 3000 has a helical slide 3110, and one end of the spring component 3000 is provided with a snap-fit ​​portion 3300. The pitch of the spring component 3000 is denoted as t. L / t=N, where N is a positive integer, for example, N=1. In this case, the axial distance L between the first snap-fit ​​groove 2213A and the second snap-fit ​​groove 2213B is equal to the pitch t of the spring component 3000. In this embodiment of the present invention, the spring component 3000 has a first position and a second position. In the first position, the snap-fit ​​portion 3300 snaps into the first snap-fit ​​groove 2213A. In the second position, the snap-fit ​​portion 3300 snaps into the second snap-fit ​​groove 2213B.

[0064] The stop component 4000 is slidably assembled onto the spiral slide 3110. (Combined) Figure 12 and Figure 13 The nut component 2000 may be provided with a stop block 2215. One end of the stop component 4000 is used to abut against the stop block 2215 circumferentially. The other end of the stop component 4000 is used to abut against the rotor component 5000 circumferentially. It should be noted that the stop block 2215 may also be provided on the valve body 1000.

[0065] like Figure 15 As shown, when assembling the valve device provided in this embodiment of the present invention, the spring component 3000's snap-fit ​​portion 3300 can be first snapped into the first slot 2213A, that is, the spring component 3000 can be switched to the first position to achieve a preliminary connection between the spring component 3000 and the nut component 2000. Afterwards, the lead screw 5200, valve core 5300, and nut component 2000 can be assembled, and the nut component 2000 can be connected to the valve seat 1100.

[0066] Then, the lead screw 5200 can be rotated clockwise, allowing the valve core 5300 to gradually approach the valve port 1111 of the valve seat 1100 until the valve core 5300 can contact the valve port 1111. After that, the lead screw 5200 is rotated clockwise by a set angle α, which can be less than 360 degrees, for example, 270 degrees.

[0067] Next, the stop component 4000 is slid clockwise into the spiral slide 3110 and slid along the spiral slide 3110 until one end of the stop component 4000 can abut against the stop block 2215 circumferentially, thus completing the positioning and assembly of the stop component 4000; for ease of description, the axial installation position of the stop component 4000 relative to the nut component 2000 at this time can be referred to as the third position. Then, the rotor part 5100 is fitted onto the lead screw 5200, and the rotor part 5100 is rotated clockwise until the stop element 5110 can abut against the stop component 4000 circumferentially (e.g., ...). Figure 16 (as shown in the figure). At this time, the lead screw 5200 and the rotor part 5100 are welded together, so that the rotor part 5000 can be connected into a whole.

[0068] During the above process, since the valve core 5300 is always in contact with the valve port 1111, the valve core 5300 can be constrained by external forces. Therefore, during the installation of the rotor part 5100, the rotor part 5100 will basically not cause the valve core 5300 to move.

[0069] After that, as Figure 17 and Figure 18 As shown, the rotor 5100 and lead screw 5200 are reversed (N+1) turns. It can be seen that when the rotor 5100 reverses for the first turn, the stop element 5110 is not in contact with the stop component 4000. Therefore, when the rotor 5100 and lead screw 5200 reverse for (N+1) turns, the stop component 4000 only reverses for N turns, and the axial displacement distance of the stop component 4000 is Nt, or L. For ease of description, the axial mounting position of the stop component 4000 relative to the nut component 2000 at this time can be referred to as the fourth position.

[0070] After that, as Figure 19 and Figure 20As shown, the spring component 3000 is axially displaced relative to the nut component 2000, allowing the locking part 3300 to engage in the second slot 2213B. Since the axial distance between the first slot 2213A and the second slot 2213B is L, the axial displacement distance of the spring component 3000 during the above process is also L. Correspondingly, the axial displacement distance of the stop component 4000 installed on the spring component 3000 is also L. The stop component 4000 can be switched back to the aforementioned third position, and the stop component 4000 can once again form a stop with the stop block 2215.

[0071] After that, as Figure 21 As shown, the rotor 5100 and lead screw 5200 are controlled to rotate clockwise M revolutions, where M ≤ N, so that the stop component 5110 can abut against the stop component 4000 circumferentially. At this time, the position of the valve core 5300 is the bottom dead center position. (N+1-M)×360 can be greater than α, so that there can be a gap between the valve core 5300 and the valve port 1111 at the bottom dead center position. To make the bottom dead center position clearer, in a specific example, M=N=1 and α=270 degrees can be defined; then, taking the position where the valve core 5300 and the valve port 1111 are in contact as the reference position, the bottom dead center position of the valve core 5300 is the position of the rotor 5100 and lead screw 5200 after reversing 90 degrees relative to this reference position.

[0072] As can be seen from the above, this embodiment of the utility model, by providing a first groove 2213A and a second groove 2213B on the nut component 2000, and setting the axial distance L between the first groove 2213A and the second groove 2213B to an integer multiple of the pitch t of the spring component 3000, allows the spring component 3000 to switch between a first position and a second position, and simultaneously drives the stop component 4000 to perform axial displacement. In this way, the adjustment of the lower stop position of the valve core 5300 can be completed relatively conveniently without the need for a push rod, and the adjustment of the lower stop position is also relatively accurate.

[0073] In some implementations, such as Figure 12 As shown, the nut component 2000 may include a connecting section 2100, and the spring component 3000 may include a body portion 3100, a transition connecting portion 3200, and a snap-fit ​​portion 3300. The body portion 3100 may be integrally shaped as a cylindrical spring, and the body portion 3100 may be fitted onto the connecting section 2100. The aforementioned helical slide 3110 may specifically be formed on the body portion 3100, and the transition connecting portion 3200 may connect the snap-fit ​​portion 3300 and the body portion 3100.

[0074] Combination Figure 15 and Figure 16When the spring component 3000 is in the first position, a receiving gap S can exist between a portion of the locking part 3300 and the connecting section 2100. A portion of the stop component 4000 can pass through this receiving gap S and abut against the stop block 2215. The setting of the receiving gap S can avoid interference between the locking part 3300 and the stop component 4000, so that the stop component 4000 can smoothly abut against the stop block 2215.

[0075] Combination Figures 19-21 When the spring component 3000 is in the second position, the stop component 4000 can be supported on the transition connection 3200 to improve the installation stability of the stop component 4000.

[0076] In some implementations, such as Figure 12 and Figure 13 As shown, the nut component 2000 may also be provided with a connecting groove 2214, which can be connected to each of the slots 2213.

[0077] The engaging portion 3300 may include a first rod portion 3310 and a second rod portion 3320 connected to each other. The first rod portion 3310 and the second rod portion 3320 may be arranged at an angle, such as 90 degrees. At least a portion of the first rod portion 3310 may be located in the communicating groove 2214 to mate with the inner wall surface of the communicating groove 2214 to define the circumferential mounting position of the spring component 3000 relative to the nut component 2000. The second rod portion 3320 is used to engage with the first locking groove 2213A or the second locking groove 2213B to define the axial mounting position of the spring component 3000 relative to the nut component 2000.

[0078] In some implementations, the nut component 2000 may also include a mounting section 2200, which may specifically be located on the axial side of the connecting section 2100.

[0079] The outer wall surface of the mounting section 2200 may be provided with a first protrusion 2211 and a second protrusion 2212. The first protrusion 2211 may include at least two axially spaced protrusions 2211A, and a slot 2213 may be formed between adjacent protrusions 2211A. The first protrusion 2211 and the second protrusion 2212 may be circumferentially spaced, so that a communicating groove 2214 may be formed between the first protrusion 2211 and the second protrusion 2212.

[0080] The mounting section 2200 may also include a narrow neck 2210 and a wide neck 2220. Both the first protrusion 2211 and the second protrusion 2212 may be located on the narrow neck 2210. In each of the protrusions 2211A of the first protrusion 2211, a groove 2213 may be formed between the protrusion 2211A that is axially closer to the wide neck 2220 and the wide neck 2220. This reduces the number of protrusions 2211A, simplifying the structure of the nut component 2000.

[0081] It should be understood that the above description of forming the slot 2213 and the connecting groove 2214 by setting the first protrusion 2211 and the second protrusion 2212 is only an exemplary illustration of the present utility model embodiment, and it cannot be regarded as a limitation on the implementation scope of the valve device provided by the present utility model embodiment. In some other implementations of the present utility model embodiment, the slot 2213 and the connecting groove 2214 may also be directly formed on the outer wall of the nut component 2000, which is also feasible.

[0082] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A valve device, characterized by It includes a valve body, and a nut assembly, a spring assembly, a stop assembly, and a rotor assembly disposed within the valve body; The valve body is provided with a valve port. The nut component is fixedly connected or limited to the valve body. The nut component is provided with at least two slots spaced apart along the axial direction. Each slot has a first slot and a second slot. The second slot is closer to the valve port than the first slot. The spring component has a helical slide, and one end of the spring component is provided with a snap-fit ​​portion; the ratio of the axial distance between the first snap-fit ​​groove and the second snap-fit ​​groove to the pitch of the spring component is a positive integer; the spring component has a first position and a second position; in the first position, the snap-fit ​​portion snaps into the first snap-fit ​​groove; in the second position, the snap-fit ​​portion snaps into the second snap-fit ​​groove; The stop component is slidably assembled on the spiral slide, and the valve body or the nut component is provided with a stop block. One end of the stop component is used to abut against the stop block in the circumferential direction, and the other end of the stop component is used to abut against the rotor component in the circumferential direction.

2. The valve device of claim 1, wherein The nut component includes a connecting section, and the spring component includes a body, a transition connecting section, and a snap-fit ​​section. The body is fitted onto the connecting section, and the body is provided with the spiral slide. The transition connecting section connects the snap-fit ​​section and the body. In the first position, there is a receiving gap between a portion of the snap-fit ​​portion and the connecting segment, and a portion of the stop member can pass through the receiving gap; in the second position, the stop member can be supported on the transition connecting portion.

3. The valve apparatus of claim 1, wherein The nut component is also provided with a communicating groove, which is connected to each of the slots. The locking part includes a first rod part and a second rod part connected to each other. The first rod part and the second rod part are arranged at an angle. At least a portion of the first rod part is located in the communicating groove, and the second rod part is used to lock into the first slot or the second slot.

4. The valve device of claim 3, wherein The nut component includes a mounting section, the outer wall of which is provided with a first protrusion and a second protrusion. The first protrusion includes at least two axially spaced protrusions, a slot is formed between two adjacent protrusions, and a connecting groove is formed between the first protrusion and the second protrusion.

5. The valve apparatus of claim 4, wherein The mounting section includes a narrow neck and a thick neck. The first protrusion and the second protrusion are both disposed on the narrow neck, and a slot is also formed between the protrusion and the thick neck.

6. Valve device according to any of claims 1-5, characterized in that The stop block is disposed on the nut component.

7. Valve device according to any of claims 1-5, characterized in that The axial distance between the first slot and the second slot is equal to the pitch of the spring component.

8. Valve device according to any of claims 1-5, characterized in that The rotor component includes a rotor section, a lead screw, and a valve core. The rotor section and the lead screw are fixedly connected or limitedly connected. The lead screw and the nut component are threadedly connected. The valve core is connected to the lead screw. The other end of the stop component is used to abut against the rotor section circumferentially.

9. The valve apparatus of claim 8, wherein The rotor section includes a stop element, and the other end of the stop component is used to abut against the stop element circumferentially.

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