Abrasion-resistant pneumatic fluorine-lined butterfly valve

Abstract

The utility model discloses a wear-resistant pneumatic fluorine lining butterfly valve which comprises a valve seat, a valve body and a valve plate, the valve body is installed on the outer side of the valve seat, the valve plate is matched with the valve seat to be used for stopping or adjusting flow, the top end of the valve seat penetrates through the outer wall of the valve body and is fixedly connected with a sleeve, an actuator is installed at the top end of the sleeve, and the actuator is connected with a valve rod. The transmission end of the actuator is connected with a valve rod assembly, the valve rod assembly is located in the sleeve, an inserting hole is formed in the top end of the valve plate, and the inserting hole is matched with the valve rod assembly in an inserting and pulling mode. By arranging the actuator, the sleeve, the valve rod assembly and the valve plate, connecting and locking of the valve plate can be relieved, the valve plate is made to be independent in the valve seat, the valve plate is replaced, independent disassembly and replacement are facilitated, waste is avoided, and meanwhile the overall wear resistance is improved; the valve body, the positioning sheath and the threads are arranged, the positioning sheath is matched with a flange hole of a pipeline for rapid positioning, the threads in the positioning sheath are matched with a bolt for threaded connection, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic fluorine-lined butterfly valves, and particularly relates to a wear-resistant pneumatic fluorine-lined butterfly valve. Background Art

[0002] As a component used to realize the on-off and flow control of a pipeline system, a fluorine-lined butterfly valve has the characteristics of high temperature resistance and corrosion resistance, and is widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc.

[0003] However, for the existing fluorine-lined butterfly valves, the butterfly plate body will be worn after a long time of use. After being worn, the butterfly plate body cannot be replaced, and only the whole fluorine-lined butterfly valve can be replaced, resulting in waste, low overall wear resistance, and short service life. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a wear-resistant pneumatic fluorine-lined butterfly valve. By setting an actuator, a sleeve, a valve rod assembly, and a valve plate, the connection lock of the valve plate can be released, making it independent in the valve seat, and the valve plate can be replaced, which is convenient for separate disassembly and replacement. While avoiding waste, the overall wear resistance is improved; by setting a valve body, a positioning sheath, and threads, the positioning sheath cooperates with the flange holes of the pipeline for quick positioning, and the threads in the positioning sheath cooperate with bolts for threaded connection, improving the installation efficiency.

[0005] One of the purposes of the utility model is realized by adopting the following technical scheme: A wear-resistant pneumatic fluorine-lined butterfly valve, comprising: a valve seat, a valve body, and a valve plate. The valve body is installed on the outside of the valve seat. The valve plate cooperates with the valve seat to cut off or regulate the flow. The top end of the valve seat penetrates through the outer wall of the valve body and is fixedly connected with a sleeve. An actuator is installed at the top end of the sleeve. The transmission end of the actuator is connected with a valve rod assembly. The valve rod assembly is located inside the sleeve. A jack is provided at the top end of the valve plate. The jack is in plug-in and unplugging cooperation with the valve rod assembly.

[0006] The valve rod assembly includes a transmission rod. A chute is formed on the side wall of the transmission rod. A spring is fixedly connected to the top end inner wall of the chute. The bottom end of the spring is fixedly connected with a connecting plate. A limiting rectangular rod is fixedly connected to the lower surface of the connecting plate. By setting an actuator, a sleeve, a valve rod assembly, and a valve plate, the connection lock of the valve plate can be released, making it independent in the valve seat, and the valve plate can be replaced, which is convenient for separate disassembly and replacement. While avoiding waste, the overall wear resistance is improved; by setting a valve body, a positioning sheath, and threads, the positioning sheath cooperates with the flange holes of the pipeline for quick positioning, and the threads in the positioning sheath cooperate with bolts for threaded connection, improving the installation efficiency.

[0007] According to the wear-resistant pneumatic fluorine-lined butterfly valve described above, the outer wall of the bottom end of the limiting rectangular rod is in sliding connection with the inner wall of the jack.

[0008] According to the described wear-resistant pneumatic fluorine-lined butterfly valve, a sealing rubber pad is pasted on the inner wall of the jack.

[0009] Provide the described wear-resistant pneumatic fluorine-lined butterfly valve. A notch is provided on the outer wall of the sleeve to provide rotation conditions for the valve stem assembly.

[0010] According to the described wear-resistant pneumatic fluorine-lined butterfly valve, positioning sheaths are welded and fixed on the inner walls of the flange holes of the valve body, and threads are provided on the inner walls of the positioning sheaths to facilitate the installation and positioning of the device.

[0011] According to the described wear-resistant pneumatic fluorine-lined butterfly valve, a through hole is provided at the bottom end of the sleeve, and the limit rectangular rod is located in the through hole.

[0012] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Brief Description of the Drawings

[0013] The present invention will be further described below in conjunction with the drawings and embodiments;

[0014] Figure 1 It is a perspective view of a wear-resistant pneumatic fluorine-lined butterfly valve of the present invention;

[0015] Figure 2 It is a structural schematic diagram of a wear-resistant pneumatic fluorine-lined butterfly valve of the present invention;

[0016] Figure 3 It is an enlarged view at A of a wear-resistant pneumatic fluorine-lined butterfly valve of the present invention;

[0017] Figure 4 It is an enlarged view at B of a wear-resistant pneumatic fluorine-lined butterfly valve of the present invention.

[0018] Legend Explanation:

[0019] 1. Valve body; 2. Valve seat; 3. Valve plate; 4. Actuator; 5. Sleeve; 6. Valve stem assembly; 7. Positioning sheath; 301. Jack; 501. Notch; 601. Transmission rod; 602. Spring; 603. Chute; 604. Connecting plate; 605. Limit rectangular rod; 701. Thread. Detailed Description of the Specific Embodiment

[0020] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0021] Refer to Figures 1-4The utility model embodiment is a wear-resistant pneumatic fluorine-lined butterfly valve, which includes: a valve seat 2, a valve body 1 and a valve plate 3, wherein the valve body 1 is installed on the outer side of the valve seat 2, and the valve plate 3 cooperates with the valve seat 2 to cut off or adjust the flow rate. The inner wall of the flange hole of the valve body 1 is welded and fixed with a positioning sheath 7, and the inner wall of the positioning sheath 7 is provided with a thread 701, which is convenient for the installation and positioning of the device. The top of the valve seat 2 passes through the outer wall of the valve body 1 and is fixed with a sleeve 5, and an actuator 4 is installed on the top of the sleeve 5. The driving end of the actuator 4 is connected with a valve stem assembly 6, and the valve stem assembly 6 is located inside the sleeve 5. A notch 501 is opened on the outer wall of the sleeve 5 to provide a rotation condition for the valve stem assembly 6. A plug hole 301 is provided on the top of the valve plate 3, and a sealing rubber pad is pasted on the inner wall of the plug hole 301. The plug hole 301 is plug-in-pull fit with the valve stem assembly 6;

[0022] The valve stem assembly 6 includes a transmission rod 601, a side wall of the transmission rod 601 is provided with a slide groove 603, a spring 602 is fixedly connected to the top of the inner wall of the slide groove 603, a connecting plate 604 is fixedly connected to the bottom end of the spring 602, a limiting rectangular rod 605 is fixedly connected to the lower surface of the connecting plate 604, the bottom outer wall of the limiting rectangular rod 605 is slidably connected to the inner wall of the socket 301, a through hole is provided at the bottom end of the sleeve 5, and the limiting rectangular rod 605 is located in the through hole. Through the provided actuator 4, sleeve 5, valve stem assembly 6, and valve plate 3, when the valve plate 3 is worn out and cannot be used normally, the connecting plate 604 is slid upward to drive the limiting rectangular rod 605 to rise, so that the limiting rectangular rod 605 is disengaged from the socket 301 to release the connection lock on the valve plate 3, so that it is independent in the valve seat 2, and the valve plate 3 is replaced. After the socket 301 of the new valve plate 3 is aligned with the limiting rectangular rod 605, the connecting plate 604 spring 602 is loosened and the limiting rectangular rod 605 is pushed downward by the elastic force to insert into the socket 301, and the installation is completed. The fluorine butterfly valve as a whole can be independent of the valve plate 3, which is convenient for separate disassembly and replacement, avoiding waste and improving the overall wear resistance; through the provided valve body 1, positioning sheath 7, and thread 701, when the valve body 1 is connected to the pipeline, the positioning sheath 7 is inserted into the corresponding flange hole of the pipeline for rapid positioning, and the thread 701 in the positioning sheath 7 is threadedly connected with the bolt to improve the installation efficiency.

[0023] Working principle: When in use, when connecting the valve body 1 to the pipeline, the positioning sheath 7 is inserted into the corresponding flange hole of the pipeline for quick positioning. The thread 701 in the positioning sheath 7 is threadedly connected with the bolt, and the installation is completed. When the valve plate 3 is worn out and cannot be used normally, slide the connecting plate 604 upward to drive the limiting rectangular rod 605 to rise, so that the limiting rectangular rod 605 disengages from the jack 301 to release the connection lock of the valve plate 3, making it independent in the valve seat 2, and replace the valve plate 3. After aligning the jack 301 of the new valve plate 3 with the limiting rectangular rod 605, release the connecting plate 604, and the spring 602 uses its elastic force to push the limiting rectangular rod 605 downward into the jack 301 to complete the installation. When in use, start the actuator 4 to drive the valve stem assembly 6 to rotate, driving the valve plate 3 to flip for shutting off or regulating the flow rate.

[0024] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present invention pertains, various changes can also be made without departing from the gist of the present invention.

Claims

1. A wear-resistant pneumatic fluorine-lined butterfly valve, comprising: A valve seat (2), a valve body (1) and a valve plate (3). The valve body (1) is installed outside the valve seat (2). The valve plate (3) cooperates with the valve seat (2) to cut off or regulate the flow rate. It is characterized in that a sleeve (5) is fixedly connected through the outer wall of the valve body (1) at the top end of the valve seat (2). An actuator (4) is installed at the top end of the sleeve (5). The transmission end of the actuator (4) is connected with a valve rod assembly (6). The valve rod assembly (6) is located inside the sleeve (5). A jack (301) is provided at the top end of the valve plate (3). The jack (301) is in plug-in and unplugging cooperation with the valve rod assembly (6). The valve rod assembly (6) includes a transmission rod (601). A chute (603) is formed on the side wall of the transmission rod (601). A spring (602) is fixedly connected to the top end of the inner wall of the chute (603). The bottom end of the spring (602) is fixedly connected to a connecting plate (604). A limiting rectangular rod (605) is fixedly connected to the lower surface of the connecting plate (604).

2. The wear-resistant pneumatic PTFE-lined butterfly valve according to claim 1, characterized in that, The outer wall of the bottom end of the limiting rectangular rod (605) is in sliding connection with the inner wall of the jack (301).

3. The wear-resistant pneumatic fluorine-lined butterfly valve according to claim 2, characterized in that, A sealing rubber pad is pasted on the inner wall of the jack (301).

4. A wear-resistant pneumatic fluorine-lined butterfly valve according to claim 1, characterized in that, A notch (501) is formed on the outer wall of the sleeve (5).

5. A wear-resistant pneumatic fluorine-lined butterfly valve according to claim 1, characterized in that, Positioning sheaths (7) are fixedly welded on the inner walls of the flange holes of the valve body (1). Threads (701) are provided on the inner walls of the positioning sheaths (7).

6. The wear-resistant pneumatic fluorine-lined butterfly valve according to claim 5, characterized in that, A through hole is formed at the bottom end of the sleeve (5). The limiting rectangular rod (605) is located in the through hole.

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