一种电动阀

Abstract

本申请提供一种电动阀，可以提高电动阀的密封性能。电动阀包括阀芯组件、阀体，阀芯组件包括第一阀芯部、主体部、第二阀芯部；阀芯组件具有内部通道；阀体包括第一、第二阀口部，第一阀口部包括第一密封部件，第二阀口部包括第二密封部件，第一、第二密封部件的材质均为软质材质；阀体还包括端部通道以及第一、第二侧部通道，第二阀口部与端部通道连通；阀芯组件位于第一位置时，第一阀芯部和第一密封部件抵接配合，内部通道和第一侧部通道断开，端部通道和第二侧部连通；位于第二位置时，第二阀芯部和第二密封部件抵接配合，端部通道和第二侧部通道断开，内部通道和第一侧部通道连通。

Claims

1. An electrically operated valve characterised in that, The device includes a valve core assembly (50) and a valve body (40). The valve core assembly (50) includes a first valve core portion (5011) and a second valve core portion (5012) arranged along the axial direction of the electric valve (100). The valve core assembly (50) is movable relative to the valve body (40) along the axial direction of the electric valve (100). The valve core assembly (50) has an internal channel (501a). The valve body (40) includes a first valve port (4021) and a second valve port (4011) arranged along the axial direction of the electric valve (100). The first valve port (4021) includes a first sealing component (601), and the second valve port (4011) includes a second sealing component (602). Both the first sealing component (601) and the second sealing component (602) are made of soft material. The valve body (40) has an end channel (401b), the end channel (401b) and the valve core assembly (50) are arranged along the axial direction of the electric valve (100); the valve body (40) has a first side channel (402a) and a second side channel (401a), and the second valve port (4011) communicates with the end channel (401b); When the valve core assembly (50) is in the first position, the first valve core portion (5011) and the first sealing member (601) abut against each other, the internal channel (501a) and the first side channel (402a) are disconnected, and the end channel (401b) and the second side channel (401a) are connected; when the valve core assembly (50) is in the second position, the second valve core portion (5012) and the second sealing member (602) abut against each other, the end channel (401b) and the second side channel (401a) are disconnected, and the internal channel (501a) and the first side channel (402a) are connected.

2. The motorized valve of claim 1, wherein, The materials of the first sealing component (601) and the second sealing component (602) include resin or rubber.

3. The motorized valve of claim 2, wherein, The first valve core (5011) and the second valve core (5012) are both made of metal, and the first sealing component (601) and / or the second sealing component (602) are made of polytetrafluoroethylene or polyetheretherketone.

4. The motorized valve of claim 1, wherein, Both the first sealing component (601) and the second sealing component (602) are annular in shape. The first valve port (4021) includes a first groove (40b1), and the second valve port (4011) includes a second groove (40b2). At least a portion of the first sealing component (601) is located in the first groove (40b1). The wall forming the first groove (40b1) includes a first sidewall. The radial outer side of the first sealing component (601) is press-fitted with the first sidewall. Alternatively, along the axial direction of the electric valve, the axial direction of the first sealing component (601) abuts against and seals against the wall forming the first groove. At least a portion of the second sealing member (602) is located in the second groove (40b2), and the wall forming the second groove (40b2) includes a second sidewall; the radially outer side of the second sealing member (602) is interference-fitted with the second sidewall, or, along the axial direction of the electric valve, the axial direction of the second sealing member (602) abuts against and seals against the wall forming the second groove (40b2).

5. The motorized valve of claim 4, wherein, The first sealing member (601) includes a first elastic part and a first valve seat part. The first valve seat part is capable of contacting the first valve core part (5011). The hardness of the first elastic part is less than that of the first valve seat part. The first elastic part is pressed between the first valve seat part and the wall forming the first groove. The second sealing component (602) includes a second elastic portion and a second valve seat portion. The second valve seat portion is capable of contacting the second valve core portion (5012). The hardness of the second elastic portion is less than that of the second valve seat portion. The second elastic portion is pressed between the second valve seat portion and the wall forming the second groove.

6. The electric valve according to any one of claims 1-5, characterized in that, The first side channel (402a) and the second side channel (401a) are both outlet channels, and the end channel (401b) is an inlet channel.

7. The motorized valve according to any of claims 1-5, wherein, The electric valve includes a drive assembly (20), which includes a rotor (201) and a lead screw (202). One end of the lead screw (202) is fixedly connected to the rotor (201) or indirectly connected by transmission. The other end of the lead screw (202) is threadedly engaged with the valve core assembly (50). The rotor (201) can drive the lead screw (202) to drive the valve core assembly (50) to move axially relative to the valve body (40). The valve body (40) includes a drive chamber (40a3), at least a portion of the lead screw (202) is located in the drive chamber (40a3), and the drive chamber (40a3) and the first valve port (4021) are arranged in sequence along the axial direction of the electric valve (100). The drive chamber (40a3) is connected to the internal channel (501a) of the valve core assembly (50).

8. The motorized valve of claim 7, wherein, The internal channel (501a) has a first opening (501a1) at a first end of the valve core assembly (50) near the second valve port (4011), and the internal channel (501a) has a second opening (50a2) at a second end opposite to the first end. The valve core assembly (50) also has a balance hole (5021a), one end of which is connected to the drive cavity (40a3) and the other end of which is connected to the second opening (50a2). Alternatively, there is a gap between the valve core assembly (50) and the inner wall of the valve body (40) that defines the drive cavity (40a3), and the internal channel (501a) has a side opening (501b) on the side of the valve core assembly (50), and the side opening (501b) is connected to the drive cavity (40a3) through the gap.

9. The motorized valve according to any one of claims 1-5, wherein, The first valve core (5011) includes a first abutting surface (50111), which can abut against the first sealing member (601). The first abutting surface (50111) is arc-shaped or conical. From the second valve core (5012) to the first valve core (5011), the radial dimension of the first abutting surface (50111) gradually decreases. The angle between the first abutting surface (50111) and the axial direction of the electric valve (100) is less than 30°. The second valve core (5012) includes a second abutment surface (50121), which can abut against the second sealing member (602). The second abutment surface (50121) is arc-shaped or conical. From the first valve core (5011) to the second valve core (5012), the radial dimension of the second abutment surface (50121) gradually decreases. The angle between the second abutment surface (50121) and the axial direction of the electric valve (100) is less than 30°.

10. The motorized valve according to any one of claims 1-5, wherein, The valve core assembly (50) includes a main body (5013), and the first valve core (5011), the main body (5013), and the second valve core (5012) are arranged along the axial direction of the electric valve (100); the electric valve includes a third sealing member (70), the third sealing member (70) surrounds the main body (5013), and the third sealing member (70) abuts against the outer periphery of the main body (5013) and the radial dimension of the abutment surface is D1; The radial dimension of the contact surface between the first valve core (5011) and the first sealing member (601) is D2, wherein D2 is less than or equal to D1; the radial dimension of the contact surface between the second valve core (5012) and the second sealing member (602) is D3, wherein D3 is less than or equal to D1; One end of the main body (5013) is fixed or integrally formed with the first valve core (5011), and the other end of the main body (5013) is fixed or integrally formed with the second valve core (5012). The outer peripheral wall of the main body (5013) extends along the axial direction of the electric valve (100). The radial dimension of the maximum outer diameter of the first valve core (5011) is d1, the radial dimension of the maximum outer diameter of the second valve core (5012) is d2, and the radial dimension of the main body (5013) is d3, 0.8*d3≤d1≤1.2*d3, 0.8*d3≤d2≤1.2*d3.

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