Jacking and pressing matching type valve element assembly

Abstract

The utility model discloses a top pressure matching type valve element assembly, relates to the technical field of valves, and can solve the problems that in the closing action of an existing stop valve, before a valve clack is completely pressed on a valve seat, the valve clack needs to rotate and slide for a relatively long distance on the valve seat, so that the valve clack and the valve seat are prone to abrasion, and the valve is not durable enough. The top pressure matching type valve element assembly comprises a valve rod main body and a valve clack main body, and a spinning cavity is formed in the valve clack main body. The bottom of the valve rod body is provided with a jacking body located in the spinning cavity and rotationally connected with the spinning cavity. The peripheral side surface of the spinning cavity is a conical inclined surface; the part between the peripheral side face of the valve clack body and the peripheral side face of the spinning cavity is a pressed side wall, and the thickness of the pressed side wall ranges from 1 mm to 5 mm.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a press-fit type valve core component. Background Art

[0002] The key component that plays the role of cutting off and regulating in the stop valve is the valve disc set on the valve stem. By rotating the valve stem, the valve disc is driven up and down to adjust the area through which the fluid can pass at the opening inside the valve body, thereby adjusting the flow rate, or directly blocking the valve body opening completely to cut off the fluid channel.

[0003] At present, in conventional stop valves, the shape of the valve disc is usually an inverted frustum, and the valve disc is fixedly connected to the valve stem. When flow regulation operation or valve opening and closing operation is required, the valve disc and the valve stem are driven by the handle to move back and forth up and down while rotating; when the valve disc and the valve stem move upward, the gap between the valve seat and the valve disc gradually increases until the entire channel is fully opened, and conversely, when the valve disc and the valve stem move downward, the gap between the valve seat and the valve disc gradually decreases, and the flow rate that can pass will gradually decrease until the entire channel is completely closed. Since the valve disc and the valve stem need to rotate continuously during the entire lifting process, when the stop valve is closed, the valve disc and the valve seat are in a state of relative rotation until the pressure is greater than the friction force. In the process of rotating the valve to close the valve, the valve disc needs to rotate and slide on the valve seat for a relatively long distance before it is fully pressed against the valve seat, resulting in large wear on the valve disc and the valve seat, and it is easy to leak after a period of use.

[0004] Under the above background, the inventor has designed a press-fit valve core assembly and a stop valve to solve the above problems, and thus proposed the present application. Utility Model Content

[0005] The purpose of the present application is to provide a press-fit valve core assembly and a stop valve, so as to solve the problem that, during the closing action of the current stop valve, the valve disc needs to rotate and slide on the valve seat for a relatively long distance before being fully pressed onto the valve seat, which causes the valve disc and the valve seat to wear easily and the valve to be not durable enough.

[0006] In order to solve the above technical problems, the utility model adopts the following solutions:

[0007] One aspect of the present application provides a press-fit valve core assembly, comprising a valve stem body and a valve disc body, wherein a spinning cavity is provided in the valve disc body;

[0008] The bottom of the valve stem body is provided with a pressing body located in the spinning cavity and rotatably connected thereto;

[0009] The peripheral side surface of the spinning cavity is a conical inclined surface;

[0010] The portion between the outer peripheral side surface of the valve flap body and the peripheral side surface of the spinning cavity is a pressure-bearing side wall, and the thickness of the pressure-bearing side wall is between 1 mm and 5 mm.

[0011] Optionally, the peripheral side surface of the pressing body is arc-shaped.

[0012] Optionally, the pressing body is spherical or drum-shaped.

[0013] Optionally, an annular groove is provided between the peripheral side surface and the bottom surface of the spinning cavity.

[0014] Optionally, an extended boss is further provided on the top of the valve disc body;

[0015] The valve flap body also includes a guide channel that penetrates the extension boss and communicates with the spinning cavity, and the valve stem body extends into the spinning cavity through the guide channel.

[0016] Optionally, a buckle cover structure for buckling onto the extension boss is fixed on the valve stem body.

[0017] Optionally, a mounting ring groove is further provided on the outer peripheral wall of the valve disc body;

[0018] It also includes an elastic ring protrusion sleeved on the mounting ring groove;

[0019] The elastic annular protrusion comprises a mounting portion embedded in the mounting annular groove and an annular protrusion protruding outward from the outer peripheral wall of the valve disc body, and the mounting portion is fixedly connected to the annular protrusion.

[0020] Optionally, the mounting portion and the annular convex portion are made by an integrated process;

[0021] The outer side surface of the annular protrusion is in a curved shape.

[0022] Optionally, the elastic annular protrusion is arranged at the middle position of the outer peripheral wall of the valve disc body;

[0023] The circumferential side surface of the valve flap body is also provided with a guide protrusion arranged parallel to the axis of the valve stem body.

[0024] Another aspect of the present application provides a stop valve, comprising a valve body, and any one of the press-fit valve core components described above;

[0025] A valve seat opening matched with the valve flap body is arranged in the valve body, and a valve opening guide groove matched with the guide protrusion is arranged on the valve seat opening.

[0026] Beneficial effects of the utility model:

[0027] The design concept of the present application is to provide a spinning cavity in the valve disc body, and to arrange a pressing block located in the spinning cavity at the bottom of the valve stem, and the pressing block is rotatably connected to the accommodating cavity, so that the valve stem body will drive the pressing block and the valve disc body to move downward in the process of continuous rotation and downward movement, until the valve disc body contacts the valve seat opening of the valve body, at which time, the rotation restriction of the valve disc body can be completed by the guide protrusion, and as the valve stem body continues to rotate, the valve stem body will continuously press the valve disc body through the pressing block, so that the valve disc body is pressed against the valve seat opening of the valve body, completing the initial cutoff action of the flow channel;

[0028] After the valve disc body is pressed against the valve seat, the valve stem body is driven to rotate and the top pressure block is driven to rotate. When the valve is closed, the top pressure block continues to rotate to press the conical slope of the spinning cavity, so that the pressure side wall will be elastically deformed slightly outward. Thereby, the valve closing effect after closing can be further improved. At the same time, in the process of the pressure side wall being deformed slightly outward, the valve stem body can only drive the top pressure block to rotate in the accommodating cavity, and can not continue to cause wear between the valve disc body and the valve seat. Therefore, in the design concept of the present application, the wear position is transferred from the valve seat and the valve disc body to the accommodating cavity and the top pressure block. Therefore, in the whole valve closing action process, the relative displacement of the valve disc body and the valve seat after contacting the valve disc body is small, the wear is small, and the service life can be effectively extended. In particular, in the present application, since the top pressure block and the accommodating cavity are not directly in contact with the fluid, even if there is a large amount of wear, it can still prevent water leakage and maintain a good anti-leakage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic cross-sectional view of the embodiment 1 of the present application;

[0030] Figure 2 This is a schematic diagram of the main structure of Example 1 of the present application.

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure of Example 2 of the present application.

[0032] Explanation of the reference numerals: 1-valve disc body, 11-spinning cavity, 111-conical inclined surface, 112-annular groove, 12-guide channel, 13-extension boss, 14-mounting ring groove, 15-pressure side wall, 16-guide protrusion, 2-valve stem body, 21-pressing body, 22-buckle cover structure, 3-elastic ring convexity, 31-mounting portion, 32-annular convex portion, 4-valve body, 41-valve seat opening, 411-valve opening guide groove. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0034] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] Embodiment 1:

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a press-fit valve core assembly, including a valve stem body 2 and a valve flap body 1, wherein a spinning cavity 11 is provided in the valve flap body 1;

[0039] The bottom of the valve stem body 2 is provided with a pressing body 21 located in the spinning cavity 11 and rotatably connected thereto;

[0040] The peripheral side surface of the spinning cavity 11 is a conical inclined surface 111;

[0041] The portion between the outer peripheral side surface of the valve flap body 1 and the peripheral side surface of the spinning cavity 11 is a pressure-bearing side wall 15, and the thickness of the pressure-bearing side wall 15 is between 1 mm and 5 mm;

[0042] The circumferential side surface of the valve disc body 1 is also provided with a guide protrusion 16 arranged parallel to the axis of the valve stem body 2 .

[0043] In this embodiment, a spinning cavity 11 is provided in the valve disc body 1, and a pressing block located in the spinning cavity 11 is provided at the bottom of the valve stem, and the pressing block is rotatably connected with the accommodating cavity, so that the valve stem body 2 will drive the pressing block and the valve disc body 1 to move downward in the process of continuously rotating and moving downward, until the valve disc body 1 contacts the valve seat opening 41 of the valve body 4. At this time, the rotation restriction of the valve disc body 1 can be completed by the guide protrusion 16, and as the valve stem body 2 continues to rotate, the valve stem body 2 will continue to press the valve disc body 1 through the pressing block, so that the valve disc body 1 is pressed on the valve seat opening 41 of the valve body 4, completing the preliminary cutoff action of the flow channel;

[0044] After the valve disc body 1 is pressed against the valve seat opening 41, the valve stem body 2 is continued to be driven to rotate, and the pressing block is driven to rotate to improve the closing effect after the valve is closed. The pressing block continues to rotate to press the conical inclined surface 111 of the spinning cavity 11, so that the pressurized side wall 15 will have an elastic deformation that is slightly convex outward. Thereby, the closing effect after the valve is closed can be further improved. At the same time, in the process of the pressurized side wall 15 slightly convexly deforming outward, the valve stem body 2 can only drive the top pressure block to rotate in the accommodating chamber, and cannot continue to cause wear between the valve disc body 1 and the valve seat mouth 41. Therefore, in the design concept of the present application, the transfer of the wear position from between the valve seat and the valve disc body 1 to between the accommodating chamber and the top pressure block is realized. Therefore, in the entire valve closing action process, the valve disc body 1 has a small relative displacement with the valve seat mouth 41 after contacting it, and the wear is small, which can effectively extend the service life. In particular, in the present application, since the top pressure block and the accommodating chamber are not in direct contact with the fluid, even if a large amount of wear occurs, water leakage can still be prevented and a good anti-leakage effect can be maintained.

[0045] Specifically, in this embodiment, refer to Figure 1 As shown, the peripheral side surface of the top pressing body 21 is arc-shaped. In this embodiment, the arc-shaped peripheral side surface of the top pressing body 21 is circular arc-shaped. The circular arc-shaped peripheral side surface of the top pressing body 21 can avoid wearing out grooves on the peripheral side surface of the spinning cavity 11.

[0046] Specifically, in this embodiment, refer to Figure 1 As shown, the shape of the pressing body 21 is spherical or drum-shaped. In this embodiment, the shape of the pressing body 21 is drum-shaped. In some embodiments, a spherical pressing body 21 can also be used.

[0047] Specifically, in this embodiment, refer to Figure 1 As shown, the circumferential side surface of the valve flap body 1 is also provided with a guide protrusion 16 arranged parallel to the axis of the valve stem body 2, which can limit the rotation of the valve flap body 1 after the valve flap body 1 contacts the valve seat opening 41 of the valve body 4, thereby reducing the wear of the valve flap body 1.

[0048] Specifically, in this embodiment, refer to Figure 1 As shown, an extended boss 13 is also provided on the top of the valve flap body 1;

[0049] The valve flap body 1 also includes a guide channel 12 that penetrates the extension boss 13 and communicates with the spinning cavity 11, and the valve stem body 2 extends into the spinning cavity 11 through the guide channel 12. The extension boss 13 and the guide channel 12 can limit the relative movement between the valve stem body 2 and the valve flap body 1, thereby preventing the valve flap body 1 from swinging, which causes uneven force on the valve flap body 1 when pressing the valve seat opening 41.

[0050] Specifically, in this embodiment, refer to Figure 1 and Figure 2 As shown, a buckle cover structure 22 for buckling onto the extension boss 13 is fixed on the valve stem body 2. In this embodiment, the buckle cover structure 22 is welded to the valve stem body 2. The buckle cover structure 22 can prevent the compressed side wall 15 from pulling the extension boss 13 to expand outward after deformation.

[0051] Specifically, in this embodiment, refer to Figure 2 As shown, a mounting ring groove 14 is also provided on the outer peripheral wall of the valve disc body 1;

[0052] It also includes an elastic ring protrusion 3 sleeved on the mounting ring groove 14;

[0053] The elastic annular protrusion 3 includes a mounting portion 31 embedded in the mounting annular groove 14, and an annular protrusion 32 protruding outward from the outer peripheral wall of the valve disc body 1. The mounting portion 31 is fixedly connected to the annular protrusion 32. The elastic annular protrusion 3 is provided to further improve the sealing performance of the channel in the valve after being cut off, thereby improving the closing effect of the valve.

[0054] Specifically, in this embodiment, the mounting portion 31 and the annular convex portion 32 are made by an integrated process;

[0055] The outer side surface of the annular protrusion 32 is curved. In this embodiment, the longitudinal section of the outer side surface of the annular protrusion 32 is an arc shape.

[0056] Specifically, in this embodiment, refer to Figure 2 As shown, the elastic annular protrusion 3 is arranged in the middle position of the outer peripheral wall of the valve disc body 1. The ... It can avoid blocking the fluid from passing through too early and affecting the flow regulation function of the valve.

[0057] In this embodiment, the guide protrusions 16 are all located below the elastic annular protrusions 3 .

[0058] Embodiment 2:

[0059] On the basis of the above-mentioned embodiment 1, Figure 3As shown, this embodiment provides a stop valve, including a valve body 4, and any one of the press-fit valve core components described above;

[0060] A valve seat opening 41 cooperating with the valve flap main body 1 is provided in the valve body 4, and a valve opening guide groove 411 cooperating with the guide protrusion 16 is provided on the valve seat opening 41. The cross-sectional shape of the valve seat opening 41 in this embodiment is an inverted isosceles trapezoid, so that the valve flap main body 1 and the valve seat opening 41 are in surface contact after being pressed, thereby improving the leakage-proof effect after closing. In addition, the present application provides a valve opening guide groove 411 on the valve seat, which can cooperate with the guide protrusion 16 of the valve flap main body 1 to guide it, so that the valve flap main body 1 avoids rotational contact with the valve seat opening 41 during the valve opening closing action, and forms a downward-pressing valve opening closing action to reduce wear.

[0061] The rest of the stop valve structure in this embodiment is designed in accordance with the existing structure.

[0062] The remaining structures of this embodiment are the same as those of the above-mentioned embodiment 1, and will not be described in detail here.

[0063] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A press-fit valve core assembly, comprising a valve stem body (2) and a valve disc body (1), characterized in that: A spinning cavity (11) is provided in the valve flap body (1); The bottom of the valve stem body (2) is provided with a pressing body (21) located in the spinning cavity (11) and rotatably connected thereto; The peripheral side surface of the spinning cavity (11) is a conical inclined surface (111); The portion between the outer peripheral side surface of the valve flap body (1) and the peripheral side surface of the spinning cavity (11) is a pressure-bearing side wall (15), and the thickness of the pressure-bearing side wall (15) is between 1 mm and 5 mm.

2. A press-fit valve core assembly according to claim 1, characterized in that: The peripheral side surface of the pressing body (21) is arc-shaped.

3. A press-fit valve core assembly according to claim 2, characterized in that: The pressing body (21) is spherical or drum-shaped.

4. The press-fit valve core assembly according to claim 1, characterized in that: The circumferential side surface of the valve flap body (1) is also provided with a guide protrusion (16) arranged parallel to the axis of the valve stem body (2).

5. The press-fit valve core assembly according to claim 1, characterized in that: An extended boss (13) is also provided on the top of the valve disc body (1); The valve flap body (1) also includes a guide channel (12) which passes through the extension boss (13) and is connected to the spinning chamber (11); the valve stem body (2) extends into the spinning chamber (11) through the guide channel (12).

6. A press-fit valve core assembly according to claim 5, characterized in that: A buckle cover structure (22) for buckling onto the extension boss (13) is fixed on the valve stem body (2).

7. The press-fit valve core assembly according to claim 1, characterized in that: The outer peripheral wall of the valve disc body (1) is also provided with a mounting ring groove (14); It also includes an elastic annular protrusion (3) sleeved on the mounting annular groove (14); The elastic annular protrusion (3) comprises a mounting portion (31) embedded in the mounting annular groove (14), and an annular protrusion (32) protruding outward from the outer peripheral wall of the valve disc body (1), and the mounting portion (31) and the annular protrusion (32) are fixedly connected.

8. The press-fit valve core assembly according to claim 7, characterized in that: The mounting portion (31) and the annular convex portion (32) are manufactured using an integrated process; The outer side surface of the annular protrusion (32) is in a curved shape.

9. The press-fit valve core assembly according to claim 7, characterized in that: The elastic annular protrusion (3) is arranged at a middle position of the outer peripheral wall of the valve disc body (1).

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