A dome valve with ceramic seal

Abstract

The application relates to a dome valve with a ceramic sealing structure, belonging to the dome valve field, which comprises a valve body, a valve core and a valve seat, the valve core is rotationally connected in the valve body, the rotation shaft of the valve core is eccentrically arranged on the valve body, the valve seat is arranged on the valve body, a dynamic sealing ring is embedded on the valve core, and a static sealing ring matched with the dynamic sealing ring is arranged on the valve seat. Since the rotation shaft of the valve core is eccentrically arranged, the dynamic sealing ring and the static sealing ring are in interference fit, the dynamic sealing ring and the static sealing ring can more stably realize the sealing function, the possibility of damage of the dome valve in the use process is reduced under the action of the dynamic sealing ring and the static sealing ring, and therefore the overall sealing performance of the dome valve is improved.

Description

Technical Field

[0001] This application relates to the field of dome valves, and more particularly to a dome valve having a ceramic sealing structure. Background Technology

[0002] Due to the rotary opening and closing characteristics of its spherical valve core, dome valves are commonly used in the field of powder and slurry conveying.

[0003] A dome valve mainly consists of a valve body and a valve core. The valve core is rotatably connected within the valve body, which contains a drive component for controlling the rotation of the valve core. To improve the stability of the dome valve during use, a sealing strip is located on the inner wall of the valve body, and the sealing strip is positioned along the circumference of the valve body. When the dome valve is in the closed state, the valve core abuts against the sealing strip to seal the dome valve. The sealing strip is typically made of rubber.

[0004] In actual use, although the soft texture of rubber gives the sealing strip good sealing performance, sticky materials tend to stick to the sealing strip, and the sealing strip is easily affected by the temperature of the material, which reduces the overall sealing performance of the dome valve, so it needs to be improved. Utility Model Content

[0005] To address the aforementioned problems, this application provides a dome valve with a ceramic sealing structure.

[0006] This application provides a dome valve with a ceramic sealing structure, which adopts the following technical solution: A dome valve with a ceramic sealing structure includes a valve body, a valve core, and a valve seat. The valve core is rotatably connected in the valve body, and the rotation shaft of the valve core is eccentrically disposed on the valve body. The valve seat is disposed on the valve body, and a dynamic sealing ring is embedded in the valve core. The valve seat is provided with a static sealing ring that cooperates with the dynamic sealing ring.

[0007] By adopting the above technical solution, during the use of the dome valve, the eccentric setting of the valve core shaft causes an interference fit between the dynamic sealing ring and the static sealing ring. At this point, the static and dynamic sealing rings work together to achieve a sealing function. Simultaneously, the action of the static and dynamic sealing rings reduces the possibility of damage to both rings during prolonged use, thereby improving the overall sealing performance of the dome valve.

[0008] Preferably, the static sealing ring has an abutting inclined surface, and the dynamic sealing ring has an abutting arc surface that cooperates with the abutting inclined surface.

[0009] By adopting the above technical solution, the fit between the inclined surface and the arc surface is improved, thus enhancing the fit between the static sealing ring and the dynamic sealing ring and improving the sealing effect between them, thereby improving the overall sealing performance of the dome valve.

[0010] Preferably, the valve body is provided with a fixing seat, and the fixing seat abuts against the side of the static sealing ring away from the valve body.

[0011] By adopting the above technical solution, the fixed seat provides a limit for the static sealing ring, making it less likely for the static sealing ring to shift during use, so that the static sealing ring and the dynamic sealing ring can achieve the sealing function more stably.

[0012] Preferably, the valve core includes a support seat and an arc-shaped seat. The support seat is rotatably connected to the valve body, and the rotating shaft of the support seat is eccentrically disposed on the valve body. The dynamic sealing ring is disposed on the support seat, and the arc-shaped seat is disposed on the side of the dynamic sealing ring away from the support seat.

[0013] By adopting the above technical solution, the arc-shaped seat provides a limit for the dynamic sealing ring, reducing the possibility of the dynamic sealing ring moving during use, so that the dynamic sealing ring can cooperate with the static sealing ring and achieve the sealing function.

[0014] Preferably, the fixing base is provided with a plurality of fixing rods, and the static sealing ring is provided with a plurality of fixing holes, each fixing rod corresponding to a fixing hole, and each fixing rod being disposed in the fixing hole at the corresponding position.

[0015] By adopting the above technical solution, when the mounting base needs to be installed, the fixing rod is inserted into the corresponding fixing hole, at which point the fixing rod can fulfill the function of positioning the static sealing ring. Furthermore, during subsequent use of the dynamic sealing ring, the fixing rod provides a limit for the dynamic sealing ring, reducing the possibility of the dynamic sealing ring falling off.

[0016] Preferably, the support is provided with a plurality of positioning posts, and the dynamic sealing ring is provided with a plurality of positioning holes, each positioning post corresponding to a positioning hole, and each positioning post being disposed in the positioning hole at the corresponding position.

[0017] By adopting the above technical solution, the positioning column provides positioning for the dynamic sealing ring, so that workers can assemble the dynamic sealing ring; on the other hand, it provides a limit to the dynamic sealing ring, reducing the possibility of the dynamic sealing ring moving during use.

[0018] Preferably, the valve body is provided with a guide seat, the guide seat has a guide arc surface, the guide seat has a mounting hole, the mounting hole has a mounting post, and the mounting post passes through the guide seat and is threadedly connected to the valve seat.

[0019] By adopting the above technical solution, the guide seat and the guide arc surface cooperate to guide the material, making it less likely for material to accumulate during use. At the same time, the mounting column makes it convenient for workers to install the guide seat on the valve body.

[0020] Preferably, a shield is embedded in the mounting hole, and the shield abuts against the inner wall of the mounting hole.

[0021] By adopting the above technical solution, the shield provides protection for the mounting column, making it less likely for materials to come into contact with the mounting column and reducing the possibility of damage to the mounting column during use.

[0022] In summary, this application includes at least one of the following beneficial technical effects: By setting an eccentrically positioned valve core, dynamic sealing ring, and static sealing ring, the dynamic and static sealing rings can achieve a more stable sealing function, reducing the possibility of damage to the static and dynamic sealing rings during use, thereby improving the overall sealing performance of the dome valve. By setting a fixed seat, the fixed seat provides a limit for the static sealing ring, reducing the possibility of the static sealing ring coming off during use and improving the stability of the static sealing ring during use; By setting up a guide seat, the material is guided, reducing the possibility of material accumulation during use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this application; Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Valve body; 11. Fixed seat; 111. Fixed rod; 2. Valve core; 21. Support seat; 211. Positioning pin; 22. Arc-shaped seat; 3. Valve seat; 4. Dynamic sealing ring; 41. Abutting arc surface; 42. Positioning hole; 5. Static sealing ring; 51. Abutting inclined surface; 52. Fixed hole; 6. Guide seat; 61. Guide arc surface; 62. Mounting hole; 621. Mounting pin; 7. Shield. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail. Example

[0026] Embodiment 1 of this application discloses a dome valve with a ceramic sealing structure. (See also...) Figure 1A dome valve with a ceramic sealing structure includes a valve body 1, a valve core 2, and a valve seat 3. The valve core 2 is rotatably connected to the valve body 1, and the rotation shaft of the valve core 2 is eccentrically positioned on the valve body 1. The valve seat 3 is positioned on the valve body 1. A dynamic sealing ring 4 is embedded in the valve core 2, and a static sealing ring 5 that mates with the dynamic sealing ring 4 is provided on the valve seat 3. Because the rotation shaft of the valve core 2 is eccentrically positioned, the dynamic sealing ring 4 and the static sealing ring 5 are interference-fitted, which facilitates the relatively stable sealing function of the dynamic sealing ring 4 and the static sealing ring 5.

[0027] Reference Figure 1 Both the static sealing ring 5 and the dynamic sealing ring 4 are made of ceramic, which gives them high hardness and structural strength, reducing the possibility of damage during use and enabling them to achieve a more stable sealing function.

[0028] Reference Figure 1 The static sealing ring 5 has an abutting inclined surface 51, and the dynamic sealing ring 4 has an abutting arc surface 41 that mates with the abutting inclined surface 51. The abutting inclined surface 51 and the abutting arc surface 41 mate with each other, increasing the contact area between the static sealing ring 5 and the dynamic sealing ring 4, so that the static sealing ring 5 and the dynamic sealing ring 4 can fit together more stably, thereby further improving the overall sealing performance of the dome valve.

[0029] Reference Figure 1 To facilitate the installation of the static sealing ring 5, a fixing seat 11 is provided on the valve body 1, and the fixing seat 11 abuts against the side of the static sealing ring 5 away from the valve body 1.

[0030] The valve core 2 includes a support seat 21 and an arc-shaped seat 22. The support seat 21 is rotatably connected to the valve body 1, and the shaft of the support seat 21 is eccentrically positioned. A dynamic sealing ring 4 is disposed on the support seat 21, and the arc-shaped seat 22 is disposed on the side of the dynamic sealing ring 4 away from the support seat 21.

[0031] The worker places the static sealing ring 5 on the valve body 1, and then installs the fixing seat 11 on the valve body 1, so that the fixing seat 11 and the static sealing ring 5 are tightly pressed together, thus completing the installation of the static sealing ring 5. At this time, under the action of the fixing seat 11, the static sealing ring 5 is limited, making it difficult for the static sealing ring 5 to separate from the valve body 1 during use.

[0032] The worker then places the dynamic sealing ring 4 on the support seat 21, and then fixes the arc-shaped seat 22 to the support seat 21 to complete the fixation of the dynamic sealing ring 4. At this time, under the action of the arc-shaped seat 22, the dynamic sealing ring 4 is not easily separated from the valve body 1 during use.

[0033] The implementation principle of Embodiment 1 of this application is as follows: During the use of the dome valve, the eccentrically positioned valve core 2 ensures that the static sealing ring 5 and the dynamic sealing ring 4 are stably abutted together, thereby providing a better seal for the dome valve and giving it superior sealing performance. Furthermore, since both the static sealing ring 5 and the dynamic sealing ring 4 are made of ceramic, the possibility of damage to them during use is reduced, further improving the overall sealing performance of the dome valve. Example

[0034] Reference Figure 2 The difference from Embodiment 1 of this application is that: the fixing base 11 is provided with a plurality of fixing rods 111, and the static sealing ring 5 is provided with a plurality of fixing holes 52. Each fixing rod 111 corresponds to a fixing hole 52, and the fixing rod 111 is set in the fixing hole 52 at the corresponding position.

[0035] The fixing rod 111 cooperates with the fixing hole 52, which on the one hand provides a limit for the static sealing ring 5, making it difficult for the static sealing ring 5 to separate from the valve body 1; on the other hand, it improves the overall structural strength of the static sealing ring 5, thereby further reducing the possibility of the static sealing ring 5 separating from the valve body 1, so that the static sealing ring 5 can cooperate more stably with the dynamic sealing ring 4.

[0036] Reference Figure 2 The support 21 is provided with several positioning pins 211, and each dynamic sealing ring 4 is provided with several positioning holes 42. Each positioning pin 211 corresponds to a positioning hole 42, and the positioning pin 211 is set in the positioning hole 42 at the corresponding position.

[0037] The positioning pin 211 cooperates with the positioning hole 42, which on the one hand provides a limit for the dynamic sealing ring 4, making it difficult for the dynamic sealing ring 4 to separate from the valve core 2; on the other hand, it improves the overall structural strength of the dynamic sealing ring 4, thereby further reducing the possibility of the dynamic sealing ring 4 separating from the valve core 2, so that the dynamic sealing ring 4 can cooperate more stably with the static sealing ring 5.

[0038] Reference Figure 2 and Figure 3 The valve body 1 is provided with a guide seat 6, and the guide seat 6 has a guide arc surface 61. The guide seat 6 has a mounting hole 62, and a mounting post 621 is provided in the mounting hole 62. The mounting post 621 passes through the guide seat 6 and is threadedly connected to the valve seat 3.

[0039] The worker abuts the guide seat 6 against the valve body 1 and inserts the mounting post 621 into the mounting hole 62, so that the mounting post 621 is threadedly connected to the valve seat 3, thus completing the installation of the guide seat 6. At this time, the guide arc surface 61 on the guide seat 6 provides guidance for the material, making it less likely for the material to accumulate in the valve body 1.

[0040] Reference Figure 3 A shield 7 is embedded in the mounting hole 62, and the shield 7 abuts against the inner wall of the mounting hole 62. The shield 7 provides protection for the mounting post 621, making the mounting post 621 less susceptible to corrosion by materials during use.

[0041] The implementation principle of Embodiment 2 of this application is as follows: the fixed rod 111 provides a limit for the static sealing ring 5, and the positioning column 211 provides a limit for the dynamic sealing ring 4, which reduces the possibility of separation between the static sealing ring 5 and the dynamic sealing ring 4 during use, so that the static sealing ring 5 and the dynamic sealing ring 4 can cooperate more stably, thereby improving the overall sealing performance of the dome valve.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dome valve with a ceramic sealing structure, characterized in that: The valve includes a valve body (1), a valve core (2), and a valve seat (3). The valve core (2) is rotatably connected in the valve body (1). The rotating shaft of the valve core (2) is eccentrically set on the valve body (1). The valve seat (3) is set on the valve body (1). A dynamic sealing ring (4) is embedded on the valve core (2). A static sealing ring (5) that cooperates with the dynamic sealing ring (4) is provided on the valve seat (3).

2. A dome valve with a ceramic sealing structure according to claim 1, characterized in that: The static sealing ring (5) has an abutting inclined surface (51), and the dynamic sealing ring (4) has an abutting arc surface (41) that matches the abutting inclined surface (51).

3. A dome valve with a ceramic sealing structure according to claim 1, characterized in that: The valve body (1) is provided with a fixed seat (11), and the fixed seat (11) abuts against the side of the static sealing ring (5) away from the valve body (1).

4. A dome valve with a ceramic sealing structure according to claim 3, characterized in that: The valve core (2) includes a support seat (21) and an arc-shaped seat (22). The support seat (21) is rotatably connected to the valve body (1). The rotating shaft of the support seat (21) is eccentrically set on the valve body (1). The dynamic sealing ring (4) is set on the support seat (21). The arc-shaped seat (22) is set on the side of the dynamic sealing ring (4) away from the support seat (21).

5. A dome valve with a ceramic sealing structure according to claim 3, characterized in that: The fixed base (11) is provided with a plurality of fixed rods (111), and the static sealing ring (5) is provided with a plurality of fixed holes (52). Each fixed rod (111) corresponds to a fixed hole (52), and each fixed rod (111) is set in the fixed hole (52) at the corresponding position.

6. A dome valve with a ceramic sealing structure according to claim 4, characterized in that: The support (21) is provided with a plurality of positioning posts (211), and the dynamic sealing ring (4) is provided with a plurality of positioning holes (42). Each positioning post (211) corresponds to a positioning hole (42), and each positioning post (211) is set in the positioning hole (42) at the corresponding position.

7. A dome valve with a ceramic sealing structure according to claim 6, characterized in that: The valve body (1) is provided with a guide seat (6), the guide seat (6) is provided with a guide arc surface (61), the guide seat (6) is provided with a mounting hole (62), the mounting hole (62) is provided with a mounting post (621), the mounting post (621) passes through the guide seat (6) and is threadedly connected to the valve seat (3).

8. A dome valve with a ceramic sealing structure according to claim 7, characterized in that: A shield (7) is embedded in the mounting hole (62), and the shield (7) abuts against the inner wall of the mounting hole (62).

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