CN116164124A - Valve - Google Patents

Abstract

The invention provides a valve, which comprises a valve core component, a valve body component and a power component, wherein the valve core component comprises a rotating shaft, the power component can drive the rotating shaft to rotate, the valve body component is provided with a first through hole, the rotating shaft penetrates through the first through hole, the valve comprises a first sealing component and a first moving component, the first sealing component is sleeved on the rotating shaft, the first moving component is provided with a first internal thread, the rotating shaft is provided with a first external thread matched with the first internal thread, the valve body component comprises a first convex part which is approximately along the radial direction of the first through hole and protrudes out of a hole wall corresponding to the first through hole, and the first convex part and the first moving component are approximately positioned at two opposite sides of the first sealing component; the valve body assembly is further provided with a first sliding groove which extends approximately along the axial direction of the rotating shaft, the first sliding groove is recessed in the hole wall corresponding to the first through hole, the first moving part comprises a first limiting part, at least part of the first limiting part is limited in the first sliding groove, and the first moving part can be abutted against the first sealing part. The sealing performance of the valve is improved.

Description

Valve

[ field of technology ]

The present invention relates to the field of fluid control, and in particular to a valve.

[ background Art ]

The electric valve is generally used for switching on or off of fluid in a system pipeline and comprises a control device, a valve rod, a valve body assembly and a valve core, wherein the valve core is positioned in an inner cavity formed by the valve body assembly, and the control device drives the valve core to rotate by driving the valve rod, so that the function of controlling the fluid is achieved. In the working process of the electric valve, the fluid needs to be prevented from leaking outwards along the axial direction of the valve rod, and the requirement on the sealing performance of the valve rod is high.

[ invention ]

The valve comprises a valve core assembly, a valve body assembly (2) and a power assembly (8), wherein the valve core assembly comprises a rotating shaft (11), the power assembly (8) can drive the rotating shaft (11) to rotate, the valve body assembly (2) is provided with a first through hole (241), the rotating shaft (11) penetrates through the first through hole (241), the valve comprises a first sealing component (3) and a first moving component (4), the first sealing component (3) is sleeved on the rotating shaft (11), the first moving component (4) is provided with a first internal thread, the rotating shaft (11) is provided with a first external thread matched with the first internal thread, the valve body assembly (2) comprises a first protruding part (242) approximately along the radial direction of the first through hole (241), the first protruding part (242) protrudes out of a hole wall corresponding to the first through hole (241), and the first protruding part (242) and the first moving component (4) are approximately located on two opposite sides of the first sealing component (3); the valve body assembly (2) is further provided with a first sliding groove (243) extending along the axial direction of the rotating shaft (11), the first sliding groove (243) is recessed in the hole wall corresponding to the first through hole (241), the first moving part (4) comprises a first limiting part (42), and at least part of the first limiting part (42) is limited in the first sliding groove (243) so that the first moving part (4) can be abutted with the first sealing part (3).

Such valve, including pivot, first sealing member and first moving part, first moving part has first internal thread, and the pivot has first external screw thread with first moving part complex, and the valve body subassembly includes first spout, and first moving part includes first spacing portion, and first spacing portion is at least partly limited in first spout, and when the pivot rotated, first moving part can with first sealing member looks butt to improved the sealing performance of valve.

Drawings

FIG. 1 is a cross-sectional view of a valve of the present invention;

FIG. 2 is a top view of a first body member of the present invention;

FIG. 3 is a schematic view of the structure of the first moving part of the present invention;

FIG. 4 is a schematic view of the structure of the first seal member of the present invention;

FIG. 5 is a cross-sectional view of a valve of the present invention;

fig. 6 is a partial schematic view of another embodiment of the valve of the present invention.

Reference numerals:

the rotary shaft 11, the valve core 12,

the valve body assembly 2, the valve body 21, the valve body seat 22, the plug 23, the first body member 24, the first through hole 241, the first protrusion 242, the first slide groove 243, the second protrusion 244,

the first sealing member 3, the first sealing body portion 31, the first sealing lip portion 32,

the first moving member 4, the first moving body part 41, the first wall 411, the first groove 412, the first stopper part 42,

a second sealing member 5, a third sealing member 6, a second moving member 7,

a power assembly 8 and a valve cavity 9.

Detailed Description

The technical scheme of the specific embodiment is described below with reference to the accompanying drawings.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that the present invention may be modified, combined or equivalent thereto, and all modifications and improvements thereto without departing from the spirit and scope of the present invention are intended to be included in the scope of the appended claims.

Referring to fig. 1, a valve is applicable to an automotive air conditioning system, the valve further comprises a power component 8, a valve body component 2 and a valve core component, the valve core component comprises a rotating shaft 11 and a valve core 12, the valve further comprises a valve cavity 9, the valve core 12 is located in the valve cavity 9, in the embodiment, the valve core 12 is spherical, one end of the rotating shaft 11 is in transmission connection with the power component 8, the other end of the rotating shaft 11 is in transmission connection with the valve core 12, the power component 8 outputs a rotating moment to the rotating shaft 11, and the rotating shaft 11 drives the valve core 12 to move.

Referring to fig. 1, the valve body assembly 2 includes a valve body 21, a valve core seat 22, a plug 23 and a first main body part 24, the first main body part 24 is fixedly connected with the valve body 21 in a sealing manner, the plug 23 is fixedly connected with the valve body 21 in a sealing manner, the valve body 21, the first main body part 24 and the plug 23 are assembled to form a valve cavity 9, the valve core 12 is located in the valve cavity 9, the valve core seat 22 is located at two sides of the valve core 12, the valve core seat 22 is provided with an arc-shaped matching surface matched with the outer surface of the valve core 12, at least part of the valve core seat 22 is arranged in a fitting manner with the valve core 12, the valve core seat 22 is in sliding fit with the valve core 12, and the valve core seat 22 can support and seal the valve core 12.

The valve body 21 includes a first passage, the cover includes a second passage, the valve core 12 includes a hole, the hole penetrates through the valve core 12, and by rotating the valve core 12, the first passage and the second passage can be communicated or not communicated through the hole, so that the on-off of fluid is controlled.

Referring to fig. 1-2, the valve includes a first sealing member 3 and a first moving member 4, the first body member 24 has a first through hole 241, the rotating shaft 11 is penetrated through the first through hole 241, the first sealing member 3 is sleeved on the rotating shaft 11, the first moving member 4 has a first internal thread, the rotating shaft 11 has a first external thread matched with the first internal thread, the first body member 24 includes a first protrusion 242 along the radial direction of the first through hole 241, the first protrusion 242 protrudes from the wall of the hole corresponding to the first through hole 241, and the first protrusion 242 and the first moving member 4 are located on opposite sides of the first sealing member 3.

The valve body assembly 2 further has a first sliding groove 243 extending along the axial direction of the rotating shaft 11, the first sliding groove 243 is recessed in a hole wall corresponding to the first through hole 241, the first moving component 4 includes a first limiting portion 42, and at least part of the first limiting portion 42 is limited in the first sliding groove 243, so that the first moving component 4 can be abutted against the first sealing component 3.

Such a valve comprises a rotating shaft 11, a first sealing part 3 and a first moving part 4, wherein the first moving part 4 is provided with a first internal thread, the rotating shaft 11 is provided with a first external thread matched with the first moving part 4, the valve body assembly 2 comprises a first sliding groove 243, the first moving part 4 comprises a first limiting part 42, the first limiting part 42 is at least partially limited in the first sliding groove 243, and when the rotating shaft 11 rotates, the first moving part 4 can be abutted against the first sealing part 3, so that the sealing performance of the valve is improved.

For example, the first moving member 4 has a first position in which the first moving member 4 presses the first sealing member 3, specifically, the rotating shaft 11 rotates during the valve closing to the valve opening, and the first moving member 4 moves toward the first sealing member 3 substantially along the axial direction of the rotating shaft 11 under the cooperation of the first external thread and the first internal thread, thereby pressing or further pressing the first sealing member 3, and improving the sealing performance of the valve.

For another example, the first sealing member 3 has a first state in which the force applied to the first sealing member 3 by the first projection 242 is F1 and the force applied to the first sealing member 3 by the first moving member 4 is F2, and a second state in which the force applied to the first sealing member 3 by the first projection 242 is F3 and the force applied to the first sealing member 3 by the first moving member 4 is F4, F1 < F3, and F2 < F4.

In such a valve, the force applied to the first sealing member 3 by the first moving member 4 increases compared to the second state of the first sealing member 3, and the force applied to the first sealing member 3 by the first protrusion 242 increases, so that the first sealing member 3 is compressed, improving the sealing performance between the rotating shaft 11 and the first body member 24.

Of course, the first through hole 241 may be a circular hole, a square hole or a hole with other shapes, and the first protrusion 242 protrudes from the hole wall corresponding to the first through hole 241 along the radial direction of the first through hole 241, which means that the first protrusion 242 may limit one side of the first sealing component 3, which is not described herein.

The first protrusion 242 and the first moving member 4 are located on two opposite sides of the first sealing member 3, the first moving member 4 may apply pressure (directly or indirectly, such as a spacer disposed between the first moving member 4 and the first sealing member 3) to the other side of the first sealing member 3, and the first protrusion 242 and the first moving member 4 cooperate to apply pressure (directly or indirectly, such as a spacer disposed between the first protrusion 242 and the first sealing member 3) to the first sealing member 3, so that the first sealing member 3 is compressed, and the acting force of the first sealing member 3 and the rotating shaft 11, and the acting force of the wall of the first through hole 241 are increased, thereby improving the sealing performance.

The first seal member 3 has a first state in which the force applied to the first seal member 3 by the first projection 242 is F1, F1. Gtoreq.0, for example, in the first state in which the first seal member 3 is just in contact with the first projection 242, the force applied to the first seal member 3 by the first moving member 4 is F2, F2. Gtoreq.0, for example, in the first state in which the first seal member 3 is just in contact with the first moving member 4, and a second state in which the force applied to the first seal member 3 by the first projection 242 is F3, the force applied to the first seal member 3 by the first moving member 4 is F4, F1 < F3, F2 < F4, and the first moving member 4 moves downward along the axis of the rotary shaft 11 with respect to the first state, and the first seal member 3 is co-pressed with the first projection 242.

Of course, in the first state, the first moving member 4 and the first protrusion 242 are in a state of co-pressing the first sealing member 3, and details thereof will not be described.

Referring to fig. 3 and 4, the first moving member 4 includes a first moving body 41, the first moving body 41 is cylindrical, the first moving body 41 is sleeved on the rotating shaft 11, the rotating shaft 11 has a first external thread, and the first moving body 41 has a first internal thread matched with the first external thread.

The first moving member 4 includes a first limiting portion 42, where the first limiting portion 42 protrudes from an outer wall of the first moving body portion 41, one end of the first limiting portion 42 is integrally formed with the first moving body portion, for example, protrudes from a wall opposite to a wall of the first moving body portion 41 that is opposite to the first through hole 241 along a radial direction of the first moving body portion 41, or the first limiting portion 42 includes a first sub-limiting portion that extends along an axial direction of the rotating shaft 11 and a second sub-limiting portion that extends along a radial direction of the first moving body portion 41, the first sub-limiting portion and the second sub-limiting portion are substantially perpendicular, the first body member 24 has a first sliding groove 243 that extends substantially along an axial direction of the rotating shaft 11, the first sliding groove 243 is recessed in a wall of the first through hole 241, and another end of the first limiting portion 42 is slidably engaged with the wall portion for the first sliding groove 243.

Of course, the first limiting portion 42 may also be welded to the outer wall of the first moving body 41, which is not described herein.

When the rotation shaft 11 rotates, since the other end portion (free end) of the first stopper portion 42 is located at the first slide groove 243, the first moving body portion 41 does not rotate with respect to the first through hole 241 or generates small rotation due to errors in manufacturing, assembling, etc., and the first moving body portion 41 moves up and down along the axis of the rotation shaft 11 by the engagement of the first female screw and the first male screw, and the first moving body portion 41 moves up and down along the rotation shaft 11, thereby increasing the force applied to the first sealing member 3 or releasing the force applied to the first sealing member 3.

Referring to fig. 5, the first sealing member 3 includes a first sealing body portion 31 and first sealing lips 32, the number of the first sealing lips 32 being at least three, and a concave surface being provided between adjacent two of the first sealing lips 32, wherein at least one concave surface faces the first moving body portion 41 and at least one concave surface faces the rotary shaft 11.

For example, the number of the first seal lips 32 is 4, the 4 first seal lips 32 are disposed at substantially equal distances in the circumferential direction of the first seal body portion 31, a concave surface is provided between two adjacent first seal lips 32, and the first seal member 3 is a substantially star-shaped seal member, thereby improving the sealing performance.

Referring to fig. 1 and 2, the valve further includes a second sealing member 5, the second sealing member 5 being fitted over the first moving body 41, a wall portion of the first moving body 41 substantially opposite to a wall of the first through hole 241 being defined as a first wall 411, and one surface defining an axis of the rotating shaft 11 being defined as a first surface.

The first moving body 41 has a first groove 412, the first groove 412 is recessed in the first wall 411, the second sealing member 5 is partially located in the first groove 412 (along the radial direction of the first moving body 41, the second sealing member 5 is partially located in the first groove 412, the second sealing member 5 forms a seal between the first moving body 41 and the wall of the first through hole 241, and the second sealing member 5 can move along with the movement of the second moving body), the projection of the first chute 243 on the first surface is not overlapped with the projection of the second sealing member 5 on the first surface, so as to improve the sealing performance.

Of course, the first body member 24 may be provided with a second groove, the second groove is recessed in the hole wall of the first through hole 241, the second sealing member 5 is partially located in the second groove (along the radial direction of the first through hole 241, the second sealing member 5 is partially located in the second groove, the second sealing member 5 forms a seal between the first moving body portion 41 and the hole wall of the first through hole 241, and the second sealing member 5 is limited in the second groove, and the second sealing member 5 slides relative to the second moving body portion), and the projection of the second groove on the first surface is not overlapped with the projection of the first chute 243 on the first surface, which will not be repeated herein.

Referring to fig. 1-2, the valve includes a third sealing member 6 and a second moving member 7, the third sealing member 6 is sleeved on the rotating shaft 11, the first body member 24 includes a second protrusion 244, the second protrusion 244 protrudes from a wall corresponding to the first through hole 241 substantially along a radial direction of the first through hole 241, the second moving member 7 is sleeved on the rotating shaft 11, the second moving member 7 has a second internal thread, the rotating shaft 11 has a second external thread matched with the second internal thread, the valve body assembly 2 includes a second protrusion 244, the second protrusion 244 protrudes from a wall corresponding to the first through hole 241, and the second protrusion 244 and the second moving member 7 are located substantially on opposite sides of the third sealing member 6.

The valve body assembly 2 further has a second sliding groove extending along the axial direction of the rotating shaft 11, the second sliding groove is recessed in a hole wall corresponding to the first through hole 241, and the second moving component 7 includes a second limiting portion, at least part of the second limiting portion is limited in the second sliding groove, so that the second moving component 7 can be abutted against the third sealing component 6.

For example, referring to fig. 2, the third sealing member 6 has a first state in which the force applied to the third sealing member 6 by the second protrusion 244 is F5, the force applied to the third sealing member 6 by the second moving member 7 is F6, and a second state in which the force applied to the third sealing member 6 by the second protrusion 244 is F7, the force applied to the third sealing member 6 by the second moving member 7 is F8, F5 < F7, and F6 < F8.

Of course, the first protrusion 242 and the second protrusion 244 may be an integral piece, which is convenient for processing, and will not be described herein.

Referring to fig. 2, the second moving member 7 includes a second moving body portion, the second moving body portion is sleeved on the rotating shaft 11, the rotating shaft 11 has a second external thread, the second moving body portion has a second internal thread matched with the second external thread, the first external thread is opposite to the second external thread in rotation direction, the second moving member 7 includes a second limiting portion, the second limiting portion protrudes out of the outer wall of the second moving body portion, the first body member 24 has a second sliding groove extending approximately along the axial direction of the rotating shaft 11, the second sliding groove is recessed in a hole wall corresponding to the first through hole 241, and one end of the second limiting portion is in sliding fit with the wall corresponding to the second sliding groove, so that sealing performance is improved.

Referring to fig. 1, the first sealing member 3 and the third sealing member 6 are located substantially between the first moving body portion 41 and the second moving body portion in the axial direction of the rotation shaft 11, facilitating assembly.

The rotation directions of the first external thread and the second external thread are the same, and when the rotating shaft 11 rotates positively or reversely, namely when the valve is opened or closed, the first moving part 4 presses the first sealing part 3 and/or the second moving part 7 presses the third sealing part 6, so that the sealing performance during valve action is improved.

Of course, in the axial direction of the rotating shaft 11, the first moving body 41 and the second moving body may be located substantially between the first sealing member 3 and the third sealing member 6, which will not be described herein.

Of course, the directions of rotation of the first external thread and the second external thread may be the same, and will not be described here.

Referring to fig. 6, in the axial direction of the rotating shaft 11, the first seal member 3 is located substantially between the first moving member 4 and the second moving member 7, the second moving member 7 is located substantially between the first seal member 3 and the third seal member 6, and the first external screw thread is opposite to the second external screw thread in rotation direction, and when the rotating shaft 11 rotates forward or backward, that is, when the valve is opened or closed, the first moving member 4 presses the first seal member 3 and/or the second moving member 7 presses the third seal member 6, so that the sealing property at the time of the valve operation is improved.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (9)

1. A valve, the valve includes a valve core assembly, a valve body assembly (2) and a power assembly (8), the valve core assembly includes a rotating shaft (11), the power assembly (8) can drive the rotating shaft (11) to rotate, characterized in that, the valve body assembly (2) has a first through hole (241), the rotating shaft (11) penetrates through the first through hole (241), the valve includes a first sealing component (3) and a first moving component (4), the first sealing component (3) is sleeved on the rotating shaft (11), the first moving component (4) has a first internal thread, the rotating shaft (11) has a first external thread matched with the first internal thread, the valve body assembly (2) includes a first protruding part (242) approximately along the radial direction of the first through hole (241), the first protruding part (242) protrudes out of the hole wall corresponding to the first through hole (241), and the first protruding part (242) and the first moving component (4) are approximately located on two opposite sides of the first sealing component (3);

the valve body assembly (2) is further provided with a first sliding groove (243) extending along the axial direction of the rotating shaft (11), the first sliding groove (243) is recessed in the hole wall corresponding to the first through hole (241), the first moving part (4) comprises a first limiting part (42), and at least part of the first limiting part (42) is limited in the first sliding groove (243) so that the first moving part (4) can be abutted with the first sealing part (3).

2. Valve according to claim 1, characterized in that the first moving part (4) comprises a first moving body part (41), the first moving body part (41) having a first internal thread cooperating with the first external thread, one end of the first limit part (42) being fixed with the first moving body part (41), the first limit part (42) being in sliding engagement with a corresponding wall part of the first chute (243).

3. Valve according to claim 2, characterized in that the first sealing part (3) comprises a first sealing body part (31) and a first sealing lip part (32), the number of the first sealing lip parts (32) being at least three, a concave surface being provided between two adjacent first sealing lip parts (32), wherein at least one concave surface is directed towards the first moving body part (41) and at least one concave surface is directed towards the rotational axis (11).

4. A valve according to claim 2 or 3, characterized in that it comprises a third sealing member (6) and a second moving member (7), said third sealing member (6) being housed in said rotating shaft (11), said second moving member (7) having a second internal thread, said rotating shaft having a second external thread cooperating with said second internal thread, said valve body assembly comprising a second protrusion (244) substantially along the radial direction of said first through hole (241), said second protrusion (244) protruding from the wall of the hole corresponding to said first through hole (241), said second protrusion (244) and said second moving member (7) being substantially located on opposite sides of said third sealing member (6);

the valve body assembly (2) is further provided with a second sliding groove extending approximately along the axial direction of the rotating shaft (11), the second sliding groove is recessed in the hole wall corresponding to the first through hole (241), the second moving part (7) comprises a second limiting part, at least part of the second limiting part is limited in the second sliding groove, and the second moving part (7) can be abutted against the third sealing part (6).

5. A valve according to claim 4, characterized in that the second moving part (7) comprises a second moving body part having a second internal thread cooperating with the second external thread, one end of the second limit part being fixed with the second moving body part, the second limit part being in sliding engagement with a corresponding wall of the second chute.

6. The shaft seal assembly valve according to claim 5, characterized in that the first sealing member (3) and the third sealing member (6) are located substantially between the first moving body portion (41) and the second moving body portion in the axial direction of the rotating shaft (11).

7. The valve of claim 6, wherein the first external thread and the second external thread have the same thread direction.

8. A valve according to claim 5, characterized in that the first sealing member (3) is located substantially between the first moving member (4) and the second moving member (7) in the axial direction of the rotating shaft (11), the second moving body portion is located substantially between the first sealing member (3) and the third sealing member (6), the rotation directions of the first external thread and the second external thread being opposite.

9. A valve according to any one of claims 5-8, characterized in that the valve body assembly comprises a first body part (24) and a valve body (21), the first body part (24) being sealingly fastened to the valve body (21), the first body part (24) having the first through-hole (241).

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