Electric valve

Abstract

The electric valve comprises a valve body component and an actuator, the valve body component comprises a valve body and a valve rod, the valve body is provided with a first connecting part, the valve rod is partially located in the first connecting part, the actuator is provided with a second connecting part, the first connecting part and the second connecting part are connected in a sleeved mode, and the first connecting part and the second connecting part are correspondingly provided with communicating holes. The valve further comprises a clamping piece, the clamping piece penetrates through the communicating hole so that the valve body component and the actuator can be connected in a limiting mode, the clamping piece is provided with a clamping groove, and the valve rod is axially limited in the clamping groove and can rotate in the circumferential direction relative to the clamping piece. According to the electric valve, connection of the valve body component and the actuator and axial limiting of the valve rod are achieved at the same time through one clamping piece, the structure of the electric valve is simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to an electric valve. Background Art

[0002] In existing electric valves, the connection between the actuator and the valve body assembly, as well as the limit of the top-mounted valve stem, are generally achieved in the following ways:

[0003] First, fix the mounting plate to the valve body assembly with screws to limit the valve stem, and then fix the actuator to the mounting plate with screws to achieve the connection between the actuator and the valve body assembly;.

[0004] It can be seen that the above connection between the actuator and the valve body requires the use of a mounting plate and multiple screws, and the connection structure is relatively complex. Summary of the Invention

[0005] The object of the present invention is to provide an electric valve that facilitates the connection between an actuator and a valve body component and can limit a valve stem, thereby simplifying the connection structure.

[0006] To solve the above technical problems, the present invention provides an electric valve, comprising a valve body component and an actuator, wherein the valve body component comprises a valve body and a valve stem, the valve body having a first connecting portion, the valve stem being partially located inside the first connecting portion, and the actuator having a second connecting portion, the first connecting portion and the second connecting portion being sleeved together, and the first connecting portion and the second connecting portion being correspondingly provided with a communication hole;

[0007] It also includes a clamping member, which passes through the connecting hole to enable the valve body component and the actuator to be connected in a limited manner. The clamping member is provided with a slot, and the valve stem is axially limited in the slot. The valve stem can rotate circumferentially relative to the clamping member.

[0008] The present invention improves the structure of the electric valve so that the same clip can not only realize the limiting connection between the valve body component and the actuator, but also realize the axial limiting of the valve stem, and the clip and the valve stem can rotate relative to each other along the circumferential direction, which facilitates the connection between the actuator and the valve body component and can limit the valve stem, thereby simplifying the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural schematic diagram of a specific embodiment of the electric valve provided by the present invention;

[0010] Figure 2 for Figure 1 Schematic diagram of the structure of the electric valve from the second angle;

[0011] Figure 3 for Figure 2 Cross-sectional view of the electric valve in the AA direction;

[0012] Figure 4 for Figure 1 Split diagram of electric valve;

[0013] Figure 5 for Figure 1 Axial cross-sectional view of the electric valve;

[0014] Figure 6 for Figure 1 Schematic diagram of the structure of the valve body components in the electric valve;

[0015] Figure 7 for Figure 6 Schematic diagram of the structure of the valve body component from the second angle;

[0016] Figure 8 for Figure 6 Schematic diagram of the structure of the valve stem in the valve body component;

[0017] Figure 9 for Figure 1 Schematic diagram of the structure of the actuator in the electric valve;

[0018] in, Figures 1-9 The reference numerals in the figures are described as follows:

[0019] 1-valve body parts;

[0020] 11-valve body;

[0021] 111-first connecting portion;

[0022] 12-valve stem;

[0023] 121-Large diameter section;

[0024] 122-trail section;

[0025] 12a-annular limiting groove;

[0026] 12A-abutment wall;

[0027] 13-sealing ring;

[0028] 2-Actuator;

[0029] 21- second connecting portion;

[0030] a-connecting holes;

[0031] 3-clip parts;

[0032] 31-Connecting shaft. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The term “plurality” herein generally refers to more than two; and when “plurality” is used to indicate the number of certain components, it does not indicate the relationship between the quantities of these components.

[0035] Please refer to Figure 1-Figure 5 , Figure 8 , Figure 1 This is a structural schematic diagram of a specific embodiment of the electric valve provided by the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the electric valve from the second angle; Figure 3 for Figure 2 Cross-sectional view of the electric valve in the AA direction; Figure 4 for Figure 1 Split diagram of electric valve; Figure 5 for Figure 1 Axial cross-sectional view of the electric valve; Figure 8 for Figure 6 Schematic diagram of the structure of the valve stem in the valve body component.

[0036] The present invention provides an electric valve, including a valve body component 1 and an actuator 2. The valve body component 1 includes a valve body 11 and a valve stem 12. The valve body 11 has a first connecting portion 111, and the valve stem 12 is partially located inside the first connecting portion 111. The actuator 2 has a second connecting portion 21. The first connecting portion 111 and the second connecting portion 21 are sleeved with each other. The first connecting portion 111 and the second connecting portion 21 are correspondingly provided with a communication hole a.

[0037] It also includes a clamping member 3, which passes through the connecting hole a to limit the connection between the valve body component 1 and the actuator 2. The clamping member 3 is provided with a slot, and the valve stem 12 is axially limited in the slot. The valve stem 12 can rotate circumferentially relative to the clamping member 13.

[0038] The present invention improves the structure of the electric valve so that the same clamping member 3 can not only realize the limiting connection between the valve body component 1 and the actuator 2, but also realize the axial limiting of the valve stem 12, and the clamping member 3 and the valve stem 12 can rotate relative to each other along the circumferential direction, so as to avoid the clamping member 3 interfering with the rotation of the valve stem 12, and can limit the valve stem 12 on the basis of facilitating the connection between the valve body component 1 and the actuator 2. In this way, compared with the structure of the existing electric valve, the structure of the electric valve of the present invention is simpler and the manufacturing cost is reduced.

[0039] Please refer to Figure 3-Figure 9 , Figure 6 for Figure 1 Schematic diagram of the structure of the valve body components in the electric valve; Figure 7 for Figure 6 Schematic diagram of the structure of the valve body component from the second angle; Figure 9 for Figure 1 Schematic diagram of the structure of the actuator in the electric valve.

[0040] Depend on Figure 4 It can be seen that in this embodiment, the first connecting portion 111 and the second connecting portion 21 are respectively provided with a communicating hole a on both radial sides of the valve stem 12, the clamping member 3 is a U-shaped structure, and the rod portion extending from the closed end to the open end of the clamping member 3 forms a connecting shaft 31. It can be seen that the clamping member 3 includes two connecting shafts 31 and a curved transition portion. The two connecting shafts 31 can be arranged roughly in parallel. The two connecting shafts 31 are connected by the transition portion, and the aforementioned card groove is formed between the two connecting shafts 31; Figure 5 It can be seen that the valve stem 12 has an abutment wall 12A facing the upper end; in the installed state, the connecting shaft 31 passes through the connecting hole a of the corresponding side portion, and the connecting shaft 31 abuts against the abutment wall 12A, or there is a gap between the connecting shaft 31 and the abutment wall 12A;

[0041] The connecting hole a includes a front connecting hole and a rear connecting hole. The front connecting hole is closer to the transition part than the rear connecting hole. The front connecting hole guides the clip 3 during installation. The connecting shaft 31 of the clip 3 is installed through the front connecting hole, that is, part of the connecting shaft 31 is loosely matched with the hole wall of the front connecting hole, and another part of the connecting shaft 31 is tightly matched with the hole wall of the rear connecting hole to prevent the clip 3 from detaching from the actuator 2 or the valve body component 1. It should be noted that when tightly matched with the hole wall of the rear connecting hole, the connecting shaft 31 can be tightly matched with the rear connecting hole located in the actuator 2 and / or tightly matched with the rear connecting hole located in the valve body component 1.

[0042] In this way, the first connecting part 111 and the second connecting part 21 are limitedly connected by two connecting shafts 31, and the two connecting shafts 31 are distributed in the radial direction at intervals, and the two connecting shafts 31 are evenly stressed, thereby ensuring the connection stability of the first connecting part 111 and the second connecting part 21; at the same time, the two connecting shafts 31 are located on both radial sides of the valve stem 12, and the connecting shafts 31 abut against the abutting wall 12A facing the upper end of the valve stem 12, or there is a gap between the connecting shafts 31 and the abutting wall 12A, which plays a role in axially limiting the valve stem 12, and the radial sides of the valve stem 12 are evenly stressed, thereby preventing the valve stem 12 from axially tilting, thereby ensuring reliable limitation of the valve stem 12.

[0043] Furthermore, when there is a gap between the connecting shaft 31 and the abutment wall 12A, the valve stem 12 has clearance along the axial direction. When the valve stem 12 moves until the limiting shaft 31 abuts the abutment wall 12A, the valve stem 12 cannot move further upward. At this time, the valve stem 12 moves to the uppermost position, thus achieving axial limitation of the valve stem 12. Furthermore, the gap between the connecting shaft 31 and the abutment wall 12A prevents the connecting shaft 31 from interfering with the rotation of the valve stem 12, thereby ensuring the operational performance of the electric valve.

[0044] It is understood that, in practice, the connector 3 is not limited to the above-mentioned U-shaped structure, for example, the connector 3 may include two independent connecting shafts 31. Alternatively, in practice, the connector 3 may also be a right-angled U-shape, in which case the transition portion is also linear.

[0045] Please refer to Figure 5 and Figure 8 In this embodiment, the valve stem 12 includes a large diameter section 121 and a small diameter section 122 connected sequentially from bottom to top, with the aforementioned abutment wall 12A formed between the small diameter section 122 and the large diameter section 121. The abutment wall 12A cooperates with the connecting shaft 31 to achieve axial positioning of the valve stem 12.

[0046] It can be understood that, in practice, the structure of the valve stem 12 is not limited. For example, the valve stem 12 may include a central rod portion, the diameter of the central rod portion remains unchanged, and an annular step portion is further provided on the outer periphery of the central rod portion, and the upper end wall of the annular step portion forms the aforementioned abutment wall 12A.

[0047] like Figure 7 and Figure 8 As shown, the diameter of the large diameter section 121 is D1, the diameter of the small diameter section 122 is D2, and the distance between the opposite peripheral walls of the two connecting shafts 31 is W1, where D2<W1<D1.

[0048] As set above, D2<W1, that is, in the installed state, there is a gap between the connecting shaft 31 and the peripheral wall of the small-diameter section 122, so as to prevent the connecting shaft 31 from interfering with the rotation of the valve stem 12 and ensure the operating performance of the electric valve; and W1<D1, so as to ensure that the connecting shaft 31 can abut against the abutting wall 12A in the installed state, thereby playing an axial limiting role on the valve stem 12.

[0049] Please continue to refer to Figure 5 and Figure 8 The large diameter section 121 of the valve stem 12 is provided with an annular receiving groove 12a and also includes a sealing ring 13. The sealing ring 13 is installed inside the annular receiving groove 12a. The outer edge of the sealing ring 13 is circumferentially fitted with the inner wall of the valve body 11.

[0050] As configured above, the annular receiving groove 12 a is used to receive the sealing ring 13 , thereby ensuring the installation reliability of the sealing ring 13 . The sealing ring 13 realizes circumferential sealing between the valve stem 12 and the valve body 11 .

[0051] Please continue to refer to Figure 5 In this embodiment, the second connecting portion 21 is sleeved on the outer periphery of the first connecting portion 111 .

[0052] Of course, the second connection part 21 and the first connection part 111 are sleeved with each other. Not only can the second connection part 21 be sleeved on the outer periphery of the first connection part 111 , but it is also feasible that the first connection part 111 is sleeved on the outer periphery of the second connection part 21 .

[0053] Furthermore, the inner peripheral wall of the second connecting portion 21 has a limiting wall facing the lower end, and the end wall of the first connecting portion 111 abuts against the limiting wall.

[0054] As set above, during the assembly process of the valve body component 1 and the actuator 2, the second connecting part 21 can be first installed on the outer periphery of the first connecting part 111, so that the first connecting part 111 and the limiting wall are axially abutted and limited. At this time, the corresponding connecting holes a in the first connecting part 111 and the second connecting part 21 are aligned, which facilitates the insertion of the clip 3 into the connecting hole a, connects the valve body component 1 and the actuator 2, and improves the operational convenience during the assembly process of the electric valve.

[0055] During the operation of the electric valve, the first connecting portion 111 is axially abutted against the limiting wall to limit the position, and can jointly bear the axial force of the electric valve with the connecting shaft 31, thereby avoiding shear failure of the connecting shaft 31 and increasing the service life of the connecting shaft 31.

[0056] like Figure 6 and Figure 9 As shown, in this embodiment, in the outer peripheral walls of the first connecting portion 111 and the second connecting portion 21 , at least the position where the communicating hole a is provided is a plane, which facilitates the processing of the communicating hole a.

[0057] The above describes in detail the electric valve provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. An electric valve, comprising a valve body component (1) and an actuator (2), wherein the valve body component (1) comprises a valve body (11) and a valve stem (12), characterized in that: The valve body (11) has a first connecting portion (111), the valve stem (12) is partially located inside the first connecting portion (111), the actuator (2) has a second connecting portion (21), the first connecting portion (111) and the second connecting portion (21) are sleeved together, and the first connecting portion (111) and the second connecting portion (21) are correspondingly provided with a communicating hole (a), The valve stem (12) is also provided with a clamping member (3), wherein the clamping member (3) passes through the connecting hole (a) to limit the connection between the valve body component (1) and the actuator (2); the clamping member (3) is provided with a clamping groove, and the valve stem (12) is axially limited in the clamping groove, and the valve stem (12) can rotate circumferentially relative to the clamping member (13).

2. The electric valve according to claim 1, characterized in that: The clamping member (3) includes two connecting shafts (31) and a transition portion, the two connecting shafts (31) are connected through the transition portion, the first connecting portion (111) and the second connecting portion (21) are respectively provided with the communicating holes (a) on both radial sides of the valve stem (12), the communicating holes (a) include a front communicating hole and a rear communicating hole, the front communicating hole is closer to the transition portion than the rear communicating hole, a part of the connecting shaft (31) is loosely fitted with the hole wall of the front communicating hole, and another part of the connecting shaft (31) is tightly fitted with the hole wall of the rear communicating hole.

3. The electric valve according to claim 2, characterized in that: The slot is formed between the two connecting shafts (31), the valve stem (12) has an abutting wall (12A) facing the upper end, the connecting shaft (31) passes through the inside of the communicating hole (a) on the corresponding side, and the connecting shaft (31) abuts against the abutting wall (12A), or there is a gap between the connecting shaft (31) and the abutting wall (12A).

4. The electric valve according to claim 3, characterized in that: The clamping member (3) is a U-shaped structure.

5. The electric valve according to claim 3, characterized in that: The valve stem (12) comprises a large diameter section (121) and a small diameter section (122) connected in sequence from bottom to top, and the abutment wall (12A) is formed between the small diameter section (122) and the large diameter section (121).

6. The electric valve according to claim 5, characterized in that: The diameter of the large diameter section (121) is D1, the diameter of the small diameter section (122) is D2, the distance between the two relative peripheral walls of the connecting shafts (31) is W1, and D2<W1<D1.

7. The electric valve according to claim 5, characterized in that: The large diameter section (121) is provided with an annular accommodating groove (12a) and also includes a sealing ring (13). The sealing ring (13) is installed inside the annular accommodating groove (12a), and the outer edge of the sealing ring (13) is circumferentially fitted with the inner wall of the valve body (11).

8. The electric valve according to any one of claims 1 to 7, characterized in that: The second connecting portion (21) is sleeved on the outer periphery of the first connecting portion (111).

9. The electric valve according to claim 8, characterized in that: The inner peripheral wall of the second connecting portion (21) has a limiting wall facing the lower end, and the end wall of the first connecting portion (111) abuts against the limiting wall.

10. The electric valve according to any one of claims 1 to 7, characterized in that: In the outer peripheral walls of the first connecting portion (111) and the second connecting portion (21), at least the position where the communicating hole (a) is provided is a plane.

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