Compression-resistant alloy butterfly valve plate with elastic limiting function

Abstract

The utility model discloses a compression-resistant alloy butterfly valve plate with elastic limit, which comprises a valve plate body, the valve plate body is circular, the valve plate body is rotatably mounted inside an alloy butterfly valve, a mounting shaft is welded and mounted at the rear end of the valve plate body, and a torsion spring is connected to the outer side of the mounting shaft in a winding manner. According to the compression-resistant alloy butterfly valve plate with the elastic limiting function, the rotating rod is arranged, the rotating rod is rotationally installed in a groove formed in the front side of an alloy butterfly valve, then grooves are formed in the two ends of the inner side of the rotating rod, and limiting blocks are connected in a penetrating and sliding mode through extrusion springs; when the valve plate body rotates, the extrusion spring can automatically eject the two limiting blocks into the first limiting grooves formed in the left end and the right end of the interior of the valve plate body through the elastic force of the extrusion spring, and therefore overturning elastic limiting can be conducted on the valve plate body, and the situation that the later sealing performance is affected due to the fact that the valve plate body rotates beyond the preset opening or closing position in the later period is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a compression-resistant alloy butterfly valve plate with elastic limit. Background Technique

[0002] The butterfly valve plate achieves the purpose of opening and closing by rotating around the valve shaft, and is mainly used for cutting off and throttling on pipelines. Due to its advantages such as simple structure, small size, light weight, and convenient operation, the butterfly valve is widely used in fields such as petroleum, chemical industry, metallurgy, electric power, water supply and drainage, and municipal construction;

[0003] During the operation of the butterfly valve, if the valve plate is not properly limited, it may rotate beyond the predetermined opening or closing position due to excessive or incorrect operation, which will not only affect the sealing performance of the valve, but also may damage the valve itself;

[0004] In order to overcome the above defects, in the prior art 1 (a Chinese patent with the application number CN202222686409.6 and the application date of October 12, 2022), a three-eccentric hard-sealed alloy butterfly valve, through the rotation of the rotating rod, the connecting plate is driven to rotate synchronously by the rotating rod, so that the alloy plates on both sides of the connecting plate rotate synchronously with the connecting plate. At the same time, the alloy plate makes the rubber ring and the protective sleeve rotate flexibly, and uses the sealing work between the rubber ring and the protective sleeve to realize the sealing work inside the valve body;

[0005] Therefore, we propose that the compression-resistant alloy butterfly valve plate with elastic limit can well solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a compression-resistant alloy butterfly valve plate with elastic limit to solve the problem proposed in the above background technique that during the operation of the butterfly valve in the current market, if the valve plate is not properly limited, it may rotate beyond the predetermined opening or closing position due to excessive or incorrect operation, which will not only affect the sealing performance of the valve, but also may damage the valve itself.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A compression-resistant alloy butterfly valve plate with elastic limit, including a valve plate body, wherein the valve plate body is circular, and the valve plate body is rotatably installed inside the alloy butterfly valve;

[0008] An installation shaft is welded and installed at the rear end of the valve plate body, a torsion spring is wound and connected to the outside of the installation shaft, and the alloy butterfly valve is connected to the outside of the torsion spring.

[0009] Preferably, a rotating rod is connected through a groove in the front side of the valve plate body, and the outer end of the rotating rod extends through the outside of the alloy butterfly valve.

[0010] Preferably, a gasket is fitted on the outer side of the valve plate body, and the gasket is also circular, and the outer side of the gasket is fitted and connected to the inner side wall of the alloy butterfly valve.

[0011] Preferably, limiting blocks are slidably installed through slots at both inner ends of the rotating rod, and the two limiting blocks are symmetrically arranged about the vertical center line of the rotating rod, and the outer ends of the two limiting blocks penetrate and extend into the valve plate body.

[0012] Preferably, a compression spring is arranged in a slot inside the rotating rod, and both ends of the compression spring are connected to the limiting blocks.

[0013] Preferably, first limiting slots are arranged through slots at both left and right ends inside the valve plate body, and second limiting slots are arranged through slots at both upper and lower ends inside the valve plate body. The sizes of the two first limiting slots and the second limiting slots are the same, and the two first limiting slots and the second limiting slots are symmetrically arranged.

[0014] Preferably, a pull rod is slidably installed through a slot at the outer end of the rotating rod, a pull rope is connected to the inner end of the pull rod, and the outer end of the pull rope is connected to two limiting blocks through a guide wheel.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) A torsion spring is provided. By arranging a mounting shaft at the rear end of the valve plate body and then rotatably installing the mounting shaft through the torsion spring inside the rear end of the alloy butterfly valve, the valve plate body can be automatically reset and flipped later, with better practicability;

[0017] (2) A rotating rod is provided. By arranging a rotating rod rotatably installed in a slot inside the front side of the alloy butterfly valve and then arranging limiting blocks slidably connected through the compression spring through slots at both inner ends of the rotating rod, when starting the valve plate body to switch and flip for sealing, the compression spring will automatically pop out the two limiting blocks into the first limiting slots opened at both left and right ends inside the valve plate body through its own elastic force, so as to realize elastic limiting of the flipping of the valve plate body and avoid the valve plate body rotating beyond the predetermined opening or closing position later and affecting the sealing performance in the later stage;

[0018] (3) Further, by arranging second limiting slots at both upper and lower ends inside the valve plate body, when the valve plate body needs to be opened, the valve plate body is rotated 90° clockwise. At this time, the compression spring will also automatically pop out the two limiting blocks into the two second limiting slots through its own elastic force. At this time, the flipped valve plate body can be limited, avoiding the phenomenon of dislocation and offset of the valve plate body used in later work, and improving the use stability of the alloy butterfly valve;

[0019] (4) is provided with a pull rod. A rotating rod is installed through a groove opened inside the front side of the alloy butterfly valve, and then a pull rod is slidably installed through a groove opened inside the rotating rod. When it is necessary to flip and reset the valve plate body, one only needs to manually pull the pull rod to drive the pull rope to pull the two limit blocks to contract and move through the guide wheel, so that the valve plate body is separated from the rotating rod. At this time, the valve plate body can be flipped and reset, and the operation is more time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a three-dimensional structural schematic diagram of the valve plate body of the present utility model;

[0022] Figure 3 is a top cross-sectional structural schematic diagram of the valve plate body of the present utility model;

[0023] Figure 4 is the present utility model Figure 3 the enlarged structural schematic diagram at A in;

[0024] Figure 5 is the present utility model Figure 3 the enlarged structural schematic diagram at B in;

[0025] Figure 6 is a partial front cross-sectional structural schematic diagram of the valve plate body and the rotating rod of the present utility model;

[0026] Figure 7 is a three-dimensional structural schematic diagram of the installation shaft and the torsion spring of the present utility model.

[0027] In the figure: 1, valve plate body; 2, rotating rod; 3, installation shaft; 4, torsion spring; 5, pull rod; 6, pull rope; 7, limit block; 8, first limit groove; 9, extrusion spring; 10, second limit groove; 11, gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] The present utility model provides the following technical solutions:

[0030] Example 1 discloses a solution to the problem that when the valve plate body 1 rotates beyond a predetermined open or closed position, it will not only affect the sealing performance of the valve, but may also cause damage to the valve itself:

[0031] The valve plate body 1, where the valve plate body 1 is circular in shape, and the valve plate body 1 is rotatably installed inside the alloy butterfly valve. A mounting shaft 3 is welded to the rear end of the valve plate body 1, and a torsion spring 4 is wound around the outer side of the mounting shaft 3, and the outer side of the torsion spring 4 is connected to the alloy butterfly valve.

[0032] A rotating rod 2 is connected through a slot in the front side interior of the valve plate body 1, and the outer end of the rotating rod 2 extends through to the outside of the alloy butterfly valve. A sealing gasket 11 is attached to the outer side of the valve plate body 1, and the sealing gasket 11 is also circular in shape, and the outer side of the sealing gasket 11 is attached to the inner side wall of the alloy butterfly valve. At both ends inside the rotating rod 2, slots are provided for slidingly installing limit blocks 7, and the two limit blocks 7 are symmetrically arranged with respect to the vertical center line of the rotating rod 2, and the outer ends of the two limit blocks 7 extend through to the inside of the valve plate body 1.

[0033] An extrusion spring 9 is provided in a slot inside the rotating rod 2, and both ends of the extrusion spring 9 are connected to the limit blocks 7. First limit slots 8 are provided in the left and right ends inside the valve plate body 1, and second limit slots 10 are provided in the upper and lower ends inside the valve plate body 1. The sizes of the two first limit slots 8 and the second limit slots 10 are the same, and the two first limit slots 8 and the second limit slots 10 are symmetrically arranged.

[0034] As Figures 1 - 7 shown, the valve plate body 1 rotates inside the alloy butterfly valve through the mounting shaft 3. Subsequently, the extrusion spring 9 provided inside the rotating rod 2 will automatically pop the two limit blocks 7 into the first limit slots 8 opened at the left and right ends of the valve plate body 1 through its own elastic force, which can perform a flip elastic reset on the flipped valve plate body 1, thereby realizing the sealing treatment of the closed alloy butterfly valve, with better practicability;

[0035] When the valve plate body 1 is flipped open again, the torsion spring 4 will perform an elastic reset on the rotated mounting shaft 3 through its own elastic force, thereby driving the valve plate body 1 to perform a reset flip. At this time, the extrusion spring 9 will automatically pop the two limit blocks 7 into the two second limit slots 10 through its own elastic force, thereby elastically limiting the flipped-open valve plate body 1 and avoiding the phenomenon of dislocation and offset of the valve plate body 1 during later work use. This not only improves the use sealing performance of the alloy butterfly valve, but also can improve the service life of the alloy butterfly valve.

[0036] Embodiment 2, which is different from Embodiment 1, is that the valve plate body 1 can be separated from the rotating rod 2 by rotating the rotating rod 2. At this time, the valve plate body 1 can be quickly flipped and switched conveniently, and the operation is more time-saving and labor-saving. It is disclosed that:

[0037] A pull rod 5 is slidably installed through a slot at the outer end of the rotating rod 2, and a pull rope 6 is connected to the inner end of the pull rod 5, and the outer end of the pull rope 6 is connected with two limit blocks 7 through a guide wheel

[0038] As Figures 1 - 6 shown, before the valve plate body 1 is flipped and opened or closed, manually pull the pull rod 5 to drive the pull rope 6 to pull the two limit blocks 7 to contract and move through the guide wheel. At this time, the valve plate body 1 can be separated from the rotating rod 2, and then the valve plate body 1 can be flipped and opened or closed. Subsequently, squeezing the spring 9 will automatically eject the two limit blocks 7 into the two first limit slots 8 or the two second limit slots 10 through its own elastic force, which can realize elastic limit of the flipped valve plate body 1, and the operation is more time-saving and labor-saving.

[0039] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A compressive alloy butterfly valve plate with elastic limit, comprising a valve plate body (1), wherein the valve plate body (1) is circular, and the valve plate body (1) is rotatably installed inside the alloy butterfly valve; An installation shaft (3) is welded and installed at the rear end of the valve plate body (1), a torsion spring (4) is wound and connected to the outside of the installation shaft (3), and the alloy butterfly valve is connected to the outside of the torsion spring (4); A rotating rod (2) is connected through a groove in the front side interior of the valve plate body (1), and the outer end of the rotating rod (2) extends through to the outside of the alloy butterfly valve; Limit blocks (7) are slidably installed through grooves at both ends inside the rotating rod (2), and the two limit blocks (7) are symmetrically arranged with respect to the vertical center line of the rotating rod (2), and the outer ends of the two limit blocks (7) extend through to the inside of the valve plate body (1); An extrusion spring (9) is arranged in a groove inside the rotating rod (2), and the two ends of the extrusion spring (9) are connected to the limit blocks (7); First limit grooves (8) are arranged in grooves at the left and right ends inside the valve plate body (1), and second limit grooves (10) are arranged in grooves at the upper and lower ends inside the valve plate body (1). The sizes of the two first limit grooves (8) and the second limit grooves (10) are the same, and the two first limit grooves (8) and the second limit grooves (10) are symmetrically arranged.

2. The resiliently limited compressive alloy butterfly valve plate according to claim 1, wherein: A sealing gasket (11) is attached to the outside of the valve plate body (1), and the sealing gasket (11) is also circular, and the outside of the sealing gasket (11) is attached and connected to the inner side wall of the alloy butterfly valve.

3. The anti-pressure alloy butterfly valve plate with elastic limit according to claim 1 is characterized in that: A pull rod (5) is slidably installed through a groove at the outer end of the rotating rod (2), a pull rope (6) is connected to the inner end of the pull rod (5), and the outer end of the pull rope (6) is connected to the two limit blocks (7) through a guide wheel.

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