Dustproof fixed ball valve

Abstract

The utility model discloses a dustproof fixed ball valve, and relates to the field of ball valves. The device comprises a fixed ball valve, the fixed ball valve comprises a ball valve body, a valve body and a flange sealing base, a sealing ring is installed at the top end of the ball valve body and used for preventing dust from entering the top end of the ball valve body, the ball valve body is rotationally connected into the valve body, and an annular scraper is installed in the valve body and used for scraping dust on the surface of the ball valve body. The flange sealing base is installed at the bottom of the valve body and fixedly connected with the scraper which is also used for scraping dust on the surface of the ball valve body. According to the device, dust attached to the outer surface of the ball valve body is scraped by arranging the scraper and the annular scraper, and the driving main shaft is isolated and protected through the sealing ring, so that the dust cannot be attached to the main shaft.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a dust-proof fixed ball valve. Background Technology

[0002] A fixed ball valve, also known as a stationary ball valve, is a high-performance ball valve in which the ball is fixed within the valve body and does not move with the pressure of the medium. The working principle of a fixed ball valve is to control the opening and closing of the valve by rotating the ball. When the ball valve rotates 90 degrees, both the inlet and outlet surfaces of the pipeline are spherical, thus cutting off the fluid flow; conversely, when the ball valve rotates 90 degrees back, both the inlet and outlet surfaces of the pipeline are orifice surfaces, allowing fluid to pass through the valve.

[0003] Fixed ball valves are used not only for liquids but also for transporting some fluids. In pneumatic transport, the medium is often a mixture of gases such as air or nitrogen with dust or particulate matter. This can lead to dust accumulation inside the ball valve, affecting its performance and lifespan, and easily causing blockages. Dust can also obstruct the bearings, preventing the valve from opening and closing. To address these issues, this invention provides a dust-proof fixed ball valve. Utility Model Content

[0004] This utility model provides a dust-proof fixed ball valve, which solves the problem that in airflow transportation, the medium is usually a mixture of gas such as air or nitrogen with dust or particulate matter, which will cause dust to accumulate inside the ball valve. This not only affects the performance and service life of the valve, but also easily causes the ball valve to be blocked, making the bearing blocked by dust and preventing the ball valve from opening and closing.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A dust-proof fixed ball valve, comprising a fixed ball valve body, a valve body, and a flange sealing base. A sealing ring is installed at the top of the ball valve body to prevent dust from entering the top of the ball valve body. The ball valve body is rotatably connected to the valve body, and an annular scraper is installed in the valve body to scrape off dust from the surface of the ball valve body. The flange sealing base is installed at the bottom of the valve body, and a scraper is fixedly connected to the flange sealing base, which is also used to scrape off dust from the surface of the ball valve body.

[0006] Preferably, the valve body is further provided with an input flange, an output flange, and a sealing ring. The input flange is fixedly connected to one end of the valve body and is used for inputting fluid. The output flange is fixedly connected to the other end of the valve body and is used for outputting fluid. The sealing ring is fixedly connected to the valve body channel wall. Two sets of sealing rings are provided. The annular scraper is fixedly connected to the outside of the sealing ring at the end of the input flange pipe.

[0007] Preferably, the valve body is further provided with a drive upper flange and a flange base, the drive upper flange is fixedly connected to the top of the valve body, the flange base is fixedly connected to the bottom of the valve body, and the flange sealing base is fixedly connected to the bottom of the flange base.

[0008] Preferably, a connecting spindle is fixedly connected to the top of the ball valve body, the connecting spindle is rotatably connected to the drive upper flange, and a rotating base plate is fixedly connected to the bottom of the ball valve body, the rotating base plate is rotatably connected to the flange sealing base.

[0009] Preferably, the fixed ball valve further includes a connecting upper flange, which is connected to the driving upper flange. A driving spindle is rotatably connected inside the connecting upper flange and is fixedly connected to the top of the connecting spindle. The driving spindle is used to drive the ball valve body to rotate.

[0010] Preferably, the flange sealing base is provided with a scraper storage tray and a support base. The scraper storage tray is fixedly connected to the flange sealing base and is used to collect the powder scraped off by the scraper. The support base is fixedly connected to the scraper storage tray, and the rotating base plate is rotatably connected to the support base.

[0011] This utility model discloses a dust-proof fixed ball valve, which has the following beneficial effects: This dust-proof fixed ball valve uses a scraper and an annular scraper to scrape off the dust adhering to the outer surface of the ball valve body, and uses a sealing ring to isolate and protect the drive spindle, so that the spindle cannot be attached to dust. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve body of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the ball valve body of this utility model;

[0017] Figure 5 This is a schematic diagram of the overall structure of the flange sealing base of this utility model;

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure of the annular scraper of the valve body of this utility model.

[0019] In the diagram: 1. Fixed ball valve; 11. Valve body; 111. Input flange; 112. Drive upper flange; 113. Output flange; 114. Sealing ring; 115. Annular scraper; 116. Flange base; 12. Connecting upper flange; 121. Drive spindle; 13. Ball valve body; 131. Connecting spindle; 132. Sealing ring; 133. Rotating base plate; 14. Flange sealing base; 141. Scraper storage tray; 142. Support base; 143. Scraper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This application provides a dust-proof fixed ball valve, which solves the problem that in airflow transportation, the medium is usually a mixture of gas such as air or nitrogen with dust or particulate matter. This can lead to dust accumulation inside the ball valve, which not only affects the valve's performance and service life, but also easily causes blockage of the ball valve, making the bearing unable to open or close the ball valve due to dust blockage.

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] This utility model discloses a dust-proof fixed ball valve.

[0024] Example 1

[0025] According to the appendix Figure 1-6 As shown,

[0026] The device includes a fixed ball valve 1, which comprises a ball valve body 13, a valve body 11, and a flange sealing base 14. A sealing ring 132 is installed at the top of the ball valve body 13 to prevent dust from entering the top of the ball valve body 13. The ball valve body 13 is rotatably connected to the valve body 11. An annular scraper 115 is installed inside the valve body 11 to scrape off dust from the surface of the ball valve body 13. The flange sealing base 14 is installed at the bottom of the valve body 11, and a scraper 143 is fixedly connected to the flange sealing base 14 to scrape off dust from the surface of the ball valve body 13.

[0027] The valve body 11 is also provided with an inlet flange 111, an outlet flange 113 and a sealing ring 114. The inlet flange 111 is fixedly connected to one end of the valve body 11 and is used for fluid input. The outlet flange 113 is fixedly connected to the other end of the valve body 11 and is used for fluid output. The sealing ring 114 is fixedly connected to the channel wall of the valve body 11. Two sets of sealing rings 114 are provided. An annular scraper 115 is fixedly connected to the outside of the sealing ring 114 at the end of the pipe of the inlet flange 111.

[0028] The valve body 11 is also provided with a drive upper flange 112 and a flange base 116. The drive upper flange 112 is fixedly connected to the top of the valve body 11, the flange base 116 is fixedly connected to the bottom of the valve body 11, and the flange sealing base 14 is fixedly connected to the bottom of the flange base 116.

[0029] In this embodiment, when the ball valve body 13 is not open and the passage is closed, dust will enter from the input flange 111 and adhere to the ball valve body 13. When the ball valve body 13 is rotated open, the annular scraper 115 will scrape off all the dust and transport it into the output flange 113 along the ball valve body 13.

[0030] Example 2

[0031] According to the appendix Figure 1-6 As shown, more specifically, based on Embodiment 1;

[0032] A connecting spindle 131 is fixedly connected to the top of the ball valve body 13. The connecting spindle 131 is rotatably connected to the drive upper flange 112. A rotating base plate 133 is fixedly connected to the bottom of the ball valve body 13. The rotating base plate 133 is rotatably connected to the flange sealing base 14.

[0033] The fixed ball valve 1 also includes a connecting upper flange 12, which is connected to the driving upper flange 112. A driving spindle 121 is rotatably connected inside the connecting upper flange 12. The driving spindle 121 is fixedly connected to the top of the connecting spindle 131. The driving spindle 121 is used to drive the ball valve body 13 to rotate.

[0034] The flange sealing base 14 is provided with a scraper storage tray 141 and a support base 142. The scraper storage tray 141 is fixedly connected to the flange sealing base 14 and is used to collect the powder scraped off by the scraper 143. The support base 142 is fixedly connected to the scraper storage tray 141, and the rotating base plate 133 is rotatably connected to the support base 142.

[0035] In this embodiment, during use, the dust attached to the ball valve body 13 is scraped off by the scrapers 143 on both sides when the ball valve body 13 rotates, and the dust falls onto the scraper storage tray 141 for collection. When the fixed ball valve 1 is stopped for maintenance, it is disassembled and cleaned.

Claims

1. A dust-tight fixed ball valve comprising a fixed ball valve (1), characterized in that, The fixed ball ball valve (1) comprises: A ball valve body (13) is provided with a sealing ring (132) at the top end, which is used to block the dust from entering the top end of the ball valve body (13); A valve body (11) is rotatably connected with the ball valve body (13), and an annular scraper (115) is arranged in the valve body (11), which is used to scrape off the dust on the surface of the ball valve body (13); A flange sealing base (14) is arranged at the bottom of the valve body (11), and a scraper (143) is fixedly connected to the flange sealing base (14), which is used to scrape off the dust on the bottom end surface of the ball valve body (13).

2. A fixed ball valve for preventing dust according to claim 1, characterized in that: The valve body (11) is further provided with: An input flange (111) is fixedly connected to one end of the valve body (11), which is used to input fluid; An output flange (113) is fixedly connected to the other end of the valve body (11), which is used to output fluid; A sealing ring (114) is fixedly connected to the channel wall of the valve body (11), and two groups of sealing rings (114) are arranged, and the annular scraper (115) is fixedly connected to the outer sealing ring (114) of the pipeline end of the input flange (111).

3. A fixed ball valve for preventing dust according to claim 1, characterized in that: The valve body (11) is further provided with: A driving upper flange (112) is fixedly connected to the top end of the valve body (11); A flange base (116) is fixedly connected to the bottom end of the valve body (11), and the flange sealing base (14) is fixedly connected to the bottom end of the flange base (116).

4. A fixed ball valve for preventing dust according to claim 3, characterized in that: The top end of the ball valve body (13) is fixedly connected with a connecting main shaft (131), which is rotatably connected to the driving upper flange (112), and the bottom end of the ball valve body (13) is fixedly connected with a rotating bottom plate (133), which is rotatably connected to the flange sealing base (14).

5. A fixed ball valve for preventing dust according to claim 4, characterized in that: The fixed ball ball valve (1) further comprises a connecting upper flange (12), which is flange-connected to the driving upper flange (112), and a driving main shaft (121) is rotatably connected in the connecting upper flange (12), which is fixedly connected to the top end of the connecting main shaft (131), and is used to drive the ball valve body (13) to rotate.

6. A fixed ball valve for preventing dust according to claim 4, wherein: The flange sealing base (14) is provided with: A scraper storage disc (141) is fixedly connected to the flange sealing base (14), which is used to collect the powder scraped off by the scraper (143); A support base (142) is fixedly connected to the scraper storage disc (141), and the rotating bottom plate (133) is rotatably connected to the support base (142).

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