Novel pneumatic angle seat valve

Abstract

The utility model discloses a novel pneumatic angle seat valve which comprises a valve body and a valve clack installed in the valve body, and the valve clack is movably connected with a valve rod arranged on the valve body. One face of the valve clack is provided with an arc face, and the arc face abuts against the valve body so that flowing of media in the valve body can be cut off. Due to the fact that the arc face is directly machined on the valve clack, and the valve clack adopts the arc face to achieve sealing of the valve body, compared with a sealing gasket, the temperature resistance of the valve clack is improved, and meanwhile the valve clack is easier to install. On the basis, the device is worthy of popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a novel pneumatic angle seat valve. Background Art

[0002] Based on the product developed by our company in the early stage, the technology with publication number: CN217463383U, since a sealing ring is used to seal between the valve body and the valve disc, when the temperature of the medium inside the valve body is high, the sealing ring is easily damaged, which affects the sealing performance of the valve body over time. Utility Model Content

[0003] The purpose of the utility model is to provide a novel pneumatic angle seat valve to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of pneumatic angle seat valve, comprising a valve body, a valve disc installed inside the valve body and a connecting piece installed on the valve body, and a valve stem provided on the valve disc passes through the connecting piece and is connected to an actuator; an arc surface is provided on one side of the valve disc, and the arc surface is used to abut against the valve body to cut off the flow of the medium inside the valve body.

[0005] As a preferred technical solution of the utility model: a side of the valve flap away from the arc surface is movably connected to the valve stem via a provided connecting portion.

[0006] As a preferred technical solution of the utility model: through holes are provided on the connecting portion and the valve stem, and the valve flap is fixed on the valve stem by passing an axle pin through the through hole.

[0007] As a preferred technical solution of the utility model: the connecting member includes a valve cover covering the valve body, and the valve cover is connected to the actuator through a support frame.

[0008] As a preferred technical solution of the utility model: a first mounting frame is further provided on a side of the support frame facing the valve cover, and is connected to the first mounting frame via a packing gland to seal the gap between the valve stem and the valve cover.

[0009] As a preferred technical solution of the utility model: a second mounting frame is further provided on a side of the support frame facing the actuator, and the actuator is connected to the second mounting frame via a provided pressing plate to fix the actuator on the support frame.

[0010] As a preferred technical solution of the utility model: a sealing member is provided at the connection between the valve cover and the valve body; wherein the sealing member is a metal sealing ring.

[0011] By adopting the above technical scheme, the beneficial effect of the utility model is: since the arc surface is directly processed on the valve disc, and the valve disc adopts the arc surface to achieve the sealing of the valve body, compared with the use of a sealing gasket, the temperature resistance of the valve disc is improved and the installation of the valve disc is also simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the main structure of the utility model;

[0014] Figure 3 This is an exploded schematic diagram of the main structure of the utility model after the valve stem is hidden;

[0015] Figure 4 This is a schematic diagram of the exploded structure of the valve stem and valve disc of the utility model;

[0016] Figure 5 It is a schematic diagram of the main structure of the connecting piece of the utility model.

[0017] In the figure: 1. valve body; 2. connecting part; 3. valve stem; 4. valve disc; 5. through hole; 6. connecting part; 7. arc surface; 8. actuator; 9. first mounting frame; 10. second mounting frame; 11. support frame; 12. valve cover; 13. packing gland; 14. pressure plate; 15. sealing member. DETAILED DESCRIPTION

[0018] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0019] See also Figure 1-5The utility model provides an embodiment: a novel pneumatic angle seat valve, comprising a valve body 1, a valve flap 4 installed inside the valve body 1, and a connecting piece 2 installed on the valve body 1, and a valve stem 3 provided on the valve flap 4 passes through the connecting piece 2 and is connected to an actuator 8; a circular arc surface 7 is provided on one side of the valve flap 4, and the circular arc surface 7 is used to abut against the valve body 1 to cut off the flow of the medium inside the valve body 1.

[0020] In summary, since the arc surface 7 is directly processed on the valve flap 4, and the valve flap 4 uses the arc surface 7 to achieve the sealing of the valve body 1, compared with the use of a sealing gasket, the temperature resistance of the valve flap 4 is improved and the installation of the valve flap 4 is also simpler. In particular, the internal structure of the valve body 1 can be simplified, that is, there is no need to process a sealing groove inside the valve body. In addition, since the valve flap 4 is made of stainless steel and the arc surface 7 is processed on its surface to achieve the sealing surface of the valve body, the temperature resistance of the valve flap 4 can be enhanced, and the corrosion resistance of the valve flap 4 can also be improved. At the same time, an arc angle that fits the arc surface 7 is provided on the valve body 1 to replace the polytetrafluoroethylene sealing ring, thereby further improving the temperature resistance of the equipment.

[0021] Furthermore, since the side of the valve flap 4 away from the arc surface 7 is movably connected to the valve stem 3 via the connecting portion 6, the connection between the valve flap 4 and the valve stem 3 can be further simplified.

[0022] Specifically, a through hole 5 is provided on the connecting portion 6 and the valve stem 3 , and the valve flap 2 is fixed on the valve stem 3 by passing an axle pin through the through hole 5 .

[0023] To sum up, since the valve flap 4 and the valve stem 3 are easy to disassemble and assemble, the valve flap 4 is simple and convenient to replace after it is worn, thereby solving the problem in the prior art that the valve flap and the valve stem are integrated into one structure, which easily causes the valve flap to be damaged when installing the actuator and makes it inconvenient to replace the valve flap later.

[0024] On the basis of the above scheme, the connecting member 2 includes a valve cover 12 covering the valve body 1, and the valve cover 12 is connected to the actuator 8 through the support frame 11. Therefore, when one end of the connecting member 2 is connected to the valve body 1, the other end is connected to the actuator 8, and the power of the actuator 8 is transmitted to the valve disc 4 by the valve stem 3. Therefore, the stability of the actuator 8 after installation is enhanced by the connecting member 2 to ensure that the actuator 8 is more reliable when working, and solves the problem of the existing patent product that the actuator 8 is easy to shake when working and the problem that cracks are easy to appear at the connection between the cover plate and the actuator 8 after long-term use. In particular, the setting of the connecting member 2 makes the gap between the actuator 8 and the valve body 1 adjustable.

[0025] Furthermore, since the first mounting frame 9 is further provided on the side of the support frame 11 facing the valve cover 12, the packing gland 13 is provided to connect with the first mounting frame 9 to seal the gap between the valve stem 3 and the valve cover 12. Therefore, while ensuring the reliable connection between the connecting member 2 and the valve body 1, the packing gland 13 can be used to fix the packing at the connection between the valve stem 3 and the connecting member 2.

[0026] At the same time, since the second mounting frame 10 is also provided on the side of the support frame 11 facing the actuator 8, and the actuator 8 is connected to the second mounting frame 10 through the provided pressing plate 14 to fix the actuator 8 on the support frame 11, the actuator 8 can be easily disassembled and assembled while also ensuring stability when in use.

[0027] In addition, since a seal 15 is provided at the connection between the valve cover 12 and the valve body 1, wherein the seal 15 is a metal sealing ring, the sealing of the connection between the two can be ensured while the temperature resistance of the device can be improved.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A new type of pneumatic angle seat valve, characterized by: It comprises a valve body (1), a valve flap (4) installed inside the valve body (1), and a connecting piece (2) installed on the valve body (1), wherein a valve stem (3) provided on the valve flap (4) passes through the connecting piece (2) and is connected to an actuator (8); A circular arc surface (7) is provided on one side of the valve flap (4), and the circular arc surface (7) is used to abut against the valve body (1) to cut off the flow of the medium inside the valve body (1); The side of the valve flap (4) away from the arc surface (7) is movably connected to the valve stem (3) via a connecting portion (6).

2. A novel pneumatic angle seat valve according to claim 1, characterized in that: The connecting portion (6) and the valve stem (3) are both provided with a through hole (5), and the valve flap (4) is fixed to the valve stem (3) by passing an axle pin through the through hole (5).

3. A novel pneumatic angle seat valve according to claim 1 or 2, characterized in that: The connecting member (2) comprises a valve cover (12) covering the valve body (1), and the valve cover (12) is connected to the actuator (8) via a support frame (11).

4. A novel pneumatic angle seat valve according to claim 3, characterized in that: A first mounting frame (9) is also provided on a side of the support frame (11) facing the valve cover (12), and is connected to the first mounting frame (9) via a packing gland (13) to seal the gap between the valve stem (3) and the valve cover (12).

5. A novel pneumatic angle seat valve according to claim 4, characterized in that: A second mounting frame (10) is also provided on a side of the support frame (11) facing the actuator (8), and the actuator (8) is connected to the second mounting frame (10) via a provided pressing plate (14) so ​​as to fix the actuator (8) on the support frame (11).

6. A novel pneumatic angle seat valve according to claim 5, characterized in that: A sealing member (15) is provided at the connection between the valve cover (12) and the valve body (1); wherein the sealing member (15) is a metal sealing ring.

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