Butt clamp turbine butterfly valve

Abstract

The utility model discloses a wafer turbine butterfly valve which comprises a butterfly valve body, a valve seat is installed in a valve body of the butterfly valve body, a lug plate with holes in the surface is fixed outside the valve body of the butterfly valve body in a four-point mode, the wafer turbine butterfly valve further comprises a connecting disc mechanism, and the connecting disc mechanism is arranged on the butterfly valve body of the wafer turbine butterfly valve by improving the lug plate and the valve seat. According to the disc connecting mechanism, a guide rod and a conical head pipe are installed on a lug plate and a valve seat of the butterfly valve body respectively to serve as a peripheral type positioning guide structure and a peripheral type positioning guide structure, and when the butterfly valve body is installed between two flange plates, the guide rod at the lug plate of the butterfly valve body can penetrate through installation holes of the two flange plates to conduct positioning before disc body butt clamp installation; and after the flange plate clamps the butterfly valve body, the flange plate can be close to the butterfly valve body along the conical head pipe, so that the butterfly valve body can be conveniently and quickly clamped and installed by the pipeline flange plate.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and particularly relates to a wafer type turbine butterfly valve. Background Art

[0002] The wafer type turbine butterfly valve is a commonly used type of butterfly valve, which is characterized by simple structure, small volume, light weight and consists of a few parts. The disc of this butterfly valve is installed in the diameter direction of the pipeline, allowing the disc to rotate around the axis in the cylindrical channel of the butterfly valve body, and the rotation angle is between 0° and 90°. When the disc rotates to 90°, the valve reaches the maximum opening degree to achieve the maximum adjustment of the flow rate. The opening and closing of the wafer type butterfly valve only need to rotate 90°, with simple operation and good fluid control characteristics. In the fully open position, the thickness of the disc is the only resistance when the medium flows through the valve body, so the pressure drop generated by passing through this valve is very small, having good flow control characteristics.

[0003] The existing wafer type turbine butterfly valve is usually clamped between the flange plates of two groups of pipelines, and some bolts for cooperating with the flange plate locking pass through the ear plate part of the wafer type turbine butterfly valve body for connection. When the wafer type turbine butterfly valve is clamped and installed between the flange plates, workers often need to adjust the position of the wafer type turbine butterfly valve between the flange plates multiple times, and then use bolts to screw into the space between the two flange plates and the ear plate of the wafer type turbine butterfly valve for locking, making the clamping installation of the wafer type turbine butterfly valve inconvenient. And when the wafer type turbine butterfly valve is clamped and installed between the flange plates, the valve seat of the wafer type turbine butterfly valve is pressed between the flange plates, and there is a lack of a sealing position between the valve seat and the flange port of the flange plate, making the wafer type turbine butterfly valve prone to water leakage after long-term use between the flange plates. For this reason, we propose a wafer type turbine butterfly valve. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a wafer type turbine butterfly valve. An improved connecting plate mechanism is provided for the ear plate and the valve seat at the butterfly valve body of the wafer type turbine butterfly valve. The connecting plate mechanism enables a guide rod and a tapered head pipe to be respectively installed at the ear plate and the valve seat of the butterfly valve body as an outer and inner positioning and guiding structure. When the butterfly valve body is installed between two groups of flange plates, the guide rod at the ear plate of the butterfly valve body can penetrate the installation holes of the two groups of flange plates for positioning before the disc clamping installation, facilitating the quick positioning of the flange plates outside the butterfly valve body for clamping. And after the flange plates clamp the butterfly valve body, they can approach the butterfly valve body along the tapered head pipe, facilitating the quick clamping installation of the butterfly valve body by the pipeline flange plates, and effectively solving the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A wafer type turbine butterfly valve includes a butterfly valve body. A valve seat is installed inside the valve body of the butterfly valve body, and four-point fixed outside the valve body of the butterfly valve body is an ear plate with openings on its surface. It further includes a connecting plate mechanism. The connecting plate mechanism includes a counter-rotating hole, a guide rod, a threaded ring step groove, a threaded inlet ring, a threaded outlet ring, a tapered head pipe, a convex ring rib, and a rib. A counter-rotating hole is provided in the plate hole of the ear plate, and a guide rod is screwed into the counter-rotating hole. Inner hexagonal grooves are provided at both ends of the rod body of the guide rod. Threaded ring step grooves for respectively screwing the threaded inlet ring and the threaded outlet ring are symmetrically provided at both end seat openings of the valve seat. Tapered head pipes are integrally formed at the outer ring openings of the threaded inlet ring and the threaded outlet ring away from the valve seat, and convex ring ribs protrude outward from the outer pipe wall of the tapered head pipe. Ribs are fixed to the inner pipe wall of the tapered head pipe.

[0007] Further, the ribs are annularly distributed on the inner pipe wall of the tapered head pipe, and the two end heads of the ribs are set as inclined heads;

[0008] By adopting the above technical solution, more ribs distributed in the tapered head pipe enhance the strength of the pipe body, and the inclined heads at both ends of the ribs can facilitate the passage of the medium.

[0009] Further, two groups of convex ring ribs are arranged and fixed on the conical surface of the tapered head pipe;

[0010] By adopting the above technical solution, the tapered head pipe with more convex ring ribs can be clamped into the socket of the pipe flange for clamping installation.

[0011] Further, a threaded rod wall is provided outside the central rod body of the guide rod, and the rod body of the guide rod at the threaded rod wall is screwed into the counter-rotating hole;

[0012] By adopting the above technical solution, the rod body of the guide rod at the threaded rod wall is screwed into the counter-rotating hole for installation.

[0013] Further, counter-rotating holes are provided in two groups of diagonal plate bodies of the ear plate, and the hole bodies of the counter-rotating holes are threaded hole bodies;

[0014] By adopting the above technical solution, counter-rotating holes are provided in two groups of diagonal plate bodies among the four plate bodies of the ear plate, facilitating the diagonal screwing and installation of the guide rod.

[0015] Further, the depth of the groove cavity of the threaded ring step groove is the same as the ring body width of the threaded inlet ring and the threaded outlet ring;

[0016] By adopting the above technical solution, the threaded inlet ring and the threaded outlet ring can be smoothly screwed into the groove cavity of the threaded ring step groove for hidden installation.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] The utility model improves and sets a connecting plate mechanism at the ear plate and the valve seat of the butterfly valve body of the wafer type turbine butterfly valve. The connecting plate mechanism enables a guide rod and a taper head pipe to be respectively installed at the ear plate and the valve seat of the butterfly valve body as an outer and inner positioning and guiding structure. When the butterfly valve body is installed between two flanges, the guide rod at the ear plate of the butterfly valve body can penetrate through the installation holes of the two flanges for positioning before the disc is clamped, facilitating the quick positioning of the flange outside the butterfly valve body for clamping. Moreover, after the flange clamps the butterfly valve body, it can approach the butterfly valve body along the taper head pipe, facilitating the quick clamping installation of the butterfly valve body by the pipeline flange.

[0019] And when the taper head pipe is inserted into the pipeline flange, the taper head pipe is press-fitted and clamped in the disc hole of the flange through the convex ring rib for interference inner connection, so that there is an interference inner connecting pipe body at the connection between the pipeline flange and the inner valve seat of the butterfly valve body, ensuring the sealing performance after the connection between the butterfly valve body and the pipeline flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a wafer type turbine butterfly valve of the utility model.

[0021] Figure 2 It is an exploded view of the connecting plate mechanism of a wafer type turbine butterfly valve of the utility model.

[0022] In the figure: 1, butterfly valve body; 2, valve seat; 3, ear plate; 4, connecting plate mechanism; 5, counter-rotating hole; 6, guide rod; 7, threaded rod wall; 8, hexagon socket; 9, threaded ring step groove; 10, threaded inlet ring; 11, threaded outlet ring; 12, taper head pipe; 13, convex ring rib; 14, rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and effects of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0024] Such as Figure 1-2As shown in the figure, a wafer type turbine butterfly valve includes a butterfly valve body 1. A valve seat 2 is installed inside the valve body of the butterfly valve body 1, and four-point fixed outside the valve body of the butterfly valve body 1 is an ear plate 3 with openings on the surface. It also includes a connecting plate mechanism 4. The connecting plate mechanism 4 includes a counter-rotating hole 5, a guide rod 6, a threaded ring step groove 9, a threaded inlet ring 10, a threaded outlet ring 11, a tapered head tube 12, a convex ring rib 13, and a rib 14. A counter-rotating hole 5 is provided in the plate hole of the ear plate 3, and a guide rod 6 is screwed inside the counter-rotating hole 5. Inner hexagonal grooves 8 are provided at both ends of the rod body of the guide rod 6. Threaded ring step grooves 9 for respectively screwing the threaded inlet ring 10 and the threaded outlet ring 11 are symmetrically provided at both end seat openings of the valve seat 2. Tapered head tubes 12 are integrally formed at the outer ring openings of the threaded inlet ring 10 and the threaded outlet ring 11 away from the valve seat 2, and convex ring ribs 13 protrude outward from the outer tube wall of the tapered head tube 12. Ribs 14 are fixed to the inner tube wall of the tapered head tube 12.

[0025] Among them, the ribs 14 are annularly distributed on the inner tube wall of the tapered head tube 12, and the two end strip heads of the ribs 14 are set as inclined strip heads;

[0026] By adopting the above technical solution, a relatively large number of ribs 14 distributed in the tapered head tube 12 enhance the strength of the tube body, and the inclined strip heads at both ends of the ribs 14 can facilitate the passage of the medium.

[0027] Among them, two groups of convex ring ribs 13 are arranged and fixed on the conical surface of the tapered head tube 12;

[0028] By adopting the above technical solution, the tapered head tube 12 with a relatively large number of convex ring ribs 13 can be clamped into the socket of the pipeline flange for clamping installation.

[0029] Among them, a threaded rod wall 7 is provided outside the central rod body of the guide rod 6, and the rod body of the guide rod 6 at the threaded rod wall 7 is screwed with the counter-rotating hole 5;

[0030] By adopting the above technical solution, the guide rod 6 is installed by screwing the rod body of the threaded rod wall 7 at the counter-rotating hole 5.

[0031] Among them, counter-rotating holes 5 are provided in two groups of diagonal plate bodies of the ear plate 3, and the hole bodies of the counter-rotating holes 5 are threaded hole bodies;

[0032] By adopting the above technical solution, the counter-rotating holes 5 are arranged in two groups of diagonal plate bodies at the four plate bodies of the ear plate 3, which is convenient for diagonal screwing and installing the guide rod 6.

[0033] Among them, the cavity depth of the threaded ring step groove 9 is the same as the ring body width of the threaded inlet ring 10 and the threaded outlet ring 11;

[0034] By adopting the above technical solution, the threaded inlet ring 10 and the threaded outlet ring 11 can be smoothly screwed into the cavity of the threaded ring step groove 9 for hidden installation.

[0035] It should be noted that the present utility model is a wafer type turbine butterfly valve. At the butterfly valve body 1 of the wafer type turbine butterfly valve, a connecting plate mechanism 4 is improvedly arranged on the ear plate 3 and the valve seat 2. Then, when the butterfly valve body 1 needs to be wafer-mounted between two sets of pipe flange plates, the threaded inlet ring 10 and the threaded outlet ring 11 can be screwed into the threaded ring step grooves 9 at both ends of the valve seat 2 for installation. Then, the guide rod 6 is screwed and installed in the counter-rotating hole 5 of the ear plate 3 with the threaded rod wall 7. At this time, the butterfly valve body 1 is positioned with the guide rod 6 inserted into the installation hole of a set of flange plates. The threaded inlet ring 10 cooperates with the tapered head pipe 12 and can be inserted into this set of flange plates. The tapered head pipe 12 is press-fitted and installed in the plate hole of the flange plate with the convex ring rib 13. Then, the installation hole of the other set of pipe flange plates can be positioned outside the rod body at the other end of the guide rod 6. Similarly, the tapered head pipe 12 of the threaded outlet ring 11 is inserted into the other set of flange plates with the convex ring rib 13 for press-fitting. Then, bolts can be screwed and inserted into the remaining installation holes of the two sets of flange plates. Then, the guide rod 6 is rotated and pulled out from the counter-rotating hole 5 and the installation hole of the flange plate. Bolts are inserted into the installation holes of the flange plate from which the guide rod 6 is pulled out, and nuts are used to lock at the bolts, so as to press the two sets of flange plates against the outside of the butterfly valve body 1 for wafer installation.

[0036] It should be noted that the present utility model is a wafer type turbine butterfly valve. The components in the present utility model are all components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0037] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A wafer type turbine butterfly valve, comprising a butterfly valve body (1), a valve seat (2) is installed inside the valve body of the butterfly valve body (1), and a lug plate (3) with openings on the surface is fixedly installed at four points outside the valve body of the butterfly valve body (1), and is characterized in that: It further includes a connecting plate mechanism (4), and the connecting plate mechanism (4) includes a counter-rotating hole (5), a guide rod (6), a threaded ring step groove (9), a threaded inlet ring (10), a threaded outlet ring (11), a tapered head pipe (12), a convex ring rib (13) and a rib (14). A counter-rotating hole (5) is provided in the plate hole of the ear plate (3), and a guide rod (6) is screwed in the counter-rotating hole (5). Inner hexagonal grooves (8) are provided at both ends of the rod body of the guide rod (6). Threaded ring step grooves (9) for respectively screwing the threaded inlet ring (10) and the threaded outlet ring (11) are symmetrically provided in the two end seat openings of the valve seat (2). Tapered head pipes (12) are integrally formed at the outer ring openings of the threaded inlet ring (10) and the threaded outlet ring (11) away from the valve seat (2), and convex ring ribs (13) protrude outward from the outer pipe wall of the tapered head pipe (12). Ribs (14) are fixed to the inner pipe wall of the tapered head pipe (12).

2. The wafer type turbine butterfly valve according to claim 1, characterized in that: The ribs (14) are annularly distributed on the inner pipe wall of the tapered head pipe (12), and the two end heads of the ribs (14) are arranged as inclined heads.

3. The wafer type turbine butterfly valve according to claim 1, characterized in that: Two groups of the convex ring ribs (13) are fixedly arranged on the conical surface of the tapered head pipe (12).

4. The wafer type turbine butterfly valve according to claim 1, wherein: A threaded rod wall (7) is provided outside the central rod body of the guide rod (6), and the guide rod (6) is screwed with the counter-rotating hole (5) with the rod body at the threaded rod wall (7).

5. The wafer type turbine butterfly valve according to claim 1, wherein: Counter-rotating holes (5) are provided in two groups of diagonal plate bodies of the ear plate (3), and the hole body of the counter-rotating hole (5) is a threaded hole body.

6. The wafer type turbine butterfly valve according to claim 1, characterized in that: The groove cavity depth of the threaded ring step groove (9) is the same as the ring body width of the threaded inlet ring (10) and the threaded outlet ring (11).

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