Double eccentric half ball valve

Abstract

The utility model discloses a double eccentricity half ball valve, including circular spherical shell, the inside of circular spherical shell is equipped with sector diaphragm, the both sides outer wall of sector diaphram is equipped with scraper through welding fixed, the both sides outer wall of sector diaphram is equipped with two arc locating strips through welding fixed, the outer wall of arc locating strip is equipped with the broken cone of equal distance distribution through welding fixed. The utility model discloses when the sector diaphragm rotates through the rotation wheel drive, the tip position of broken cone on arc locating strip can rapidly break the hard scale that adheres in the inner wall of circular spherical shell, and the big piece scale is broken into small piece or scrap, has reduced the adhesion intensity and the cleaning difficulty of scale, then, the scraper of sector diaphragm two sides follows closely behind, and the scale after breaking is scraped and cleaned comprehensively, and the descaling effect is good, and the rotation resistance of sector diaphragm is reduced, and the operation difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, specifically to a double eccentric hemispherical valve. Background Technology

[0002] The double eccentric hemispherical valve is an industrial valve that employs a unique double eccentric design.

[0003] In existing double eccentric ball valve applications, the inner wall of the valve body is prone to hard scale buildup due to impurities in the fluid. This scale can seriously affect the valve's performance and service life.

[0004] Traditional double eccentric ball valves mainly rely on the shearing force generated between the diaphragm and the inner wall of the valve body during the movement of the diaphragm to scrape off scale. However, this method is not effective for some firmly attached and hard-textured large scale pieces, making it difficult to completely remove them, resulting in continuous accumulation of scale. At the same time, due to the presence of large scale pieces, the diaphragm needs to overcome greater resistance during the movement, increasing the difficulty of operation.

[0005] To address the aforementioned issues, we propose a double eccentric hemispherical valve. Utility Model Content

[0006] The purpose of this invention is to provide a double eccentric hemispherical valve to address the aforementioned shortcomings in the technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double eccentric hemispherical valve, comprising a circular spherical shell, wherein a fan-shaped diaphragm is provided inside the circular spherical shell, and scrapers are fixedly provided on both outer walls of the fan-shaped diaphragm by welding, and two arc-shaped positioning strips are fixedly provided on both outer walls of the fan-shaped diaphragm by welding, and equally spaced crushing cones are fixedly provided on the outer walls of the arc-shaped positioning strips by welding.

[0008] Preferably, the top of the circular spherical shell is connected to a rotating sleeve through an opening, a gearbox is installed on the top of the rotating sleeve, and a wheel is installed on one side of the gearbox through an opening.

[0009] Preferably, the inner wall of the rotating sleeve is equipped with a vertically downward rotating rod, the bottom outer wall of the circular shell is equipped with a base, the base is equipped with a vertically upward positioning rod, the top and bottom outer walls of the fan-shaped diaphragm are provided with fixing openings, and one end of the outer wall of the rotating rod and the positioning rod are both connected by nuts through the inner wall of the fixing openings.

[0010] Preferably, the outer wall of the fan-shaped diaphragm is fitted to the inner wall of the circular shell, and one end of the crushing cone is in clearance fit with the inner wall of the circular shell.

[0011] Preferably, water guide pipes are fixedly provided on the outer walls of both sides of the circular spherical shell through openings, and a docking ring is fixedly provided on the outer wall of one end of the two water guide pipes. The outer wall of the docking ring has docking holes distributed at equal intervals.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] When the fan-shaped diaphragm is driven to rotate by rotating the wheel, the tip of the crushing cone on the arc-shaped positioning bar can quickly break up the hard scale adhering to the inner wall of the spherical shell, decomposing large pieces of scale into small pieces or fragments, reducing the adhesion strength of the scale and the difficulty of cleaning. Then, the scrapers on both sides of the fan-shaped diaphragm follow closely behind to thoroughly scrape off the broken scale. The scale removal effect is good, and the rotational resistance of the fan-shaped diaphragm is reduced, making the operation easier. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of a double eccentric hemispherical valve according to the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the circular spherical shell of a double eccentric hemispherical valve according to the present invention.

[0017] Figure 3 This is a schematic diagram of the fan-shaped diaphragm structure of a double eccentric hemispherical valve according to this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Circular spherical shell, 2. Rotating sleeve, 3. Gearbox, 4. Wheel, 5. Rotating rod, 6. Base, 7. Positioning rod, 8. Fan-shaped diaphragm, 9. Scraper, 10. Arc-shaped positioning strip, 11. Crushing cone, 12. Fixing port, 13. Water guide pipe, 14. Connecting ring, 15. Connecting hole. Detailed Implementation

[0020] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0021] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] Example 1

[0023] Refer to the instruction manual appendix Figure 1-3 A double eccentric hemispherical valve includes a circular spherical shell 1, inside which a fan-shaped diaphragm 8 is disposed. The outer wall of the fan-shaped diaphragm 8 is attached to the inner wall of the circular spherical shell 1. Scrapers 9 are fixedly disposed on both outer walls of the fan-shaped diaphragm 8 by welding. At the same time, two arc-shaped positioning strips 10 are fixedly disposed on both outer walls of the fan-shaped diaphragm 8 by welding. Crushing cones 11 are evenly distributed and fixedly disposed on the outer walls of the arc-shaped positioning strips 10 by welding. One end of the crushing cone 11 is in clearance fit with the inner wall of the circular spherical shell 1.

[0024] Example 2

[0025] Based on Embodiment 1, an opening is made at the top of the circular spherical shell 1 and connected to the rotating sleeve 2. A gearbox 3 is installed at the top of the rotating sleeve 2, and an opening is made on one side of the gearbox 3 and a wheel 4 is installed. By rotating the wheel 4, the gear inside the gearbox 3 can be rotated, thereby driving the rotating sleeve 2 to rotate. A vertically downward rotating rod 5 is installed on the inner wall of the rotating sleeve 2. A base 6 is installed on the bottom outer wall of the circular spherical shell 1, and a vertically upward positioning rod 7 is installed on the base 6. Fixing holes 12 are made on the top and bottom outer walls of the fan-shaped diaphragm 8. The outer walls of one end of the rotating rod 5 and the positioning rod 7 are respectively passed through the inner walls of the fixing holes 12 at the top and bottom of the fan-shaped diaphragm 8 and fixed with nuts. When the rotating sleeve 2 rotates, the rotating rod 5 drives the fan-shaped diaphragm 8 to rotate. The positioning rod 7 plays the role of positioning and stabilizing the rotation of the fan-shaped diaphragm 8.

[0026] Example 3

[0027] Based on Embodiment 1, openings are made on the outer walls of both sides of the circular spherical shell 1 and water guide pipes 13 are fixedly installed. A docking ring 14 is fixedly installed on the outer wall of one end of the two water guide pipes 13. Dating holes 15 are evenly distributed on the outer wall of the docking ring 14. The docking ring 14 and the docking holes 15 facilitate docking and installation with the double eccentric hemispherical valve pipeline.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual appendix Figure 1-3 When this utility model is in use, fluid flows into the interior of the circular spherical shell 1 from the water guide pipe 13 on one side. When it is necessary to treat the large amount of scale accumulated on the inner wall of the valve body, the wheel 4 is rotated, which drives the rotating rod 5 in the rotating sleeve 2 to rotate through the gearbox 3, thereby driving the fan-shaped diaphragm 8 to rotate around the positioning rod 7. During this process, the crushing cone 11 fixed on the arc-shaped positioning strip 10 first contacts the scale on the inner wall of the circular spherical shell 1, and uses its sharp end to crush the scale, turning large pieces of scale into small pieces or fragments. The scrapers 9 on the outer walls on both sides of the fan-shaped diaphragm 8 further scrape the inner wall of the circular spherical shell 1, thoroughly cleaning off the crushed scale. The cleaned scale flows out with the fluid from the water guide pipe 13 on the other side.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double eccentric hemispherical valve, comprising a circular spherical shell (1), characterized in that: The inside of the circular spherical shell (1) is provided with a fan-shaped diaphragm (8). The outer walls of the fan-shaped diaphragm (8) are fixed with scrapers (9) by welding. The outer walls of the fan-shaped diaphragm (8) are fixed with two arc-shaped positioning strips (10) by welding. The outer walls of the arc-shaped positioning strips (10) are fixed with equally spaced crushing cones (11) by welding.

2. The double eccentric hemispherical valve according to claim 1, characterized in that: The top of the circular spherical shell (1) is connected to a rotating sleeve (2) through an opening. A gearbox (3) is installed on the top of the rotating sleeve (2). A wheel (4) is installed on one side of the gearbox (3) through an opening.

3. A double eccentric hemispherical valve according to claim 2, characterized in that: The inner wall of the rotating sleeve (2) is equipped with a vertically downward rotating rod (5), the bottom outer wall of the circular spherical shell (1) is equipped with a base (6), the base (6) is equipped with a vertically upward positioning rod (7), the top and bottom outer walls of the fan-shaped diaphragm (8) are provided with a fixing opening (12), and the outer walls of one end of the rotating rod (5) and the positioning rod (7) are both connected by nuts through the inner wall of the fixing opening (12).

4. A double eccentric hemispherical valve according to claim 1, characterized in that: The outer wall of the fan-shaped diaphragm (8) is attached to the inner wall of the circular shell (1), and one end of the crushing cone (11) is in clearance fit with the inner wall of the circular shell (1).

5. A double eccentric hemispherical valve according to claim 1, characterized in that: Water guide pipes (13) are fixedly provided on the outer walls of both sides of the circular spherical shell (1) through openings. A docking ring (14) is fixedly provided on the outer wall of one end of the two water guide pipes (13). The outer wall of the docking ring (14) has docking holes (15) distributed at equal intervals.

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