Butterfly valve limiting and locking device

Abstract

The utility model discloses a butterfly valve limiting and locking device which comprises a valve body assembly, a rotating assembly fixed to the top of the valve body assembly, an angle assembly fixed to the top of the rotating assembly, a stopping assembly rotationally connected to the interior of the angle assembly and comprises a rotating shaft, the rotating shaft is fixed to the interior of the angle assembly, and a fixing strip is rotationally connected to one side of the rotating shaft. A friction plate is fixed to one side of the fixing strip, a bayonet lock is slidably connected into the fixing strip, a pull handle is fixed to the end of the bayonet lock, a top plate is fixed to one side of the bayonet lock, a spring is sleeved with one side of the bayonet lock, the valve body assembly comprises a valve body, a flange is fixed to the end of the valve body, a valve seat is sleeved with the valve body, and a supporting frame is fixed to one side of the valve body. The friction plate is in contact with the friction disc through rotation of the fixing strip, so that rotation of the friction disc can be limited, the valve shaft cannot rotate, the opening and closing angle of the valve clack is fixed, and the opening and closing angle of the valve clack can be confirmed through matching of the pointer and the scales.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field especially relates to a butterfly valve limiting locking device. BACKGROUND

[0002] The butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for low pressure pipeline medium switch control butterfly valve is to refer to the closing piece (valve clapper or butterfly plate) for disc, rotates around the valve shaft to reach the opening and closing of a kind of valve, valve can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and various types of fluid flow, mainly plays cut-off and throttling role on pipeline, now part of butterfly valve drive valve plate switch is still driven by runner, but runner drives not have locking, lead to accidental touch, easy to accidentally open butterfly valve, simultaneously, when driving butterfly valve now, will only open part of angle to control flow, but now butterfly valve is opened by runner manually, there will be excessive force or too small, both will affect the opening angle of valve plate in butterfly valve, affect the locking of flow.

[0003] Chinese patent number CN222085171U provides a kind of butterfly valve limiting locking device, new type relates to butterfly valve technical field;And the utility model includes valve body, the upper end of valve body is equipped with actuator, actuator is installed and is equipped with the rotating rod of driving valve rod in valve body, rotating rod is fixed and is equipped with runner at the end away from actuator, actuator is fixed and is equipped with sleeve on the side close to rotating rod, sleeve is opened with through slot on the side facing runner, rotating rod penetrates through through slot;In the utility model, when not needing to open valve body, to prevent accidental touch from opening valve plate in valve body by rotating runner, staff can directly pull moving block, moving block will drive the tooth ring fixedly connected at bottom and move towards gear, at this time tooth ring will be stably inserted on gear, at this time gear will be limited by tooth ring, will not rotate, to achieve the purpose of locking, avoid butterfly valve opening when not needing to use butterfly valve, affect use, and overall operation is convenient and simple, convenient for staff to use.

[0004] The butterfly valve limiting locking device in the prior art has the following problems: although it can lock the rotation of the valve shaft, it is complex to manufacture, and the angle within a certain range cannot be infinitely locked.

[0005] Therefore, it is urgent to design a butterfly valve limiting locking device to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the shortcomings in the prior art and provides a butterfly valve limiting locking device.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] The utility model provides a butterfly valve limiting locking device, including valve body assembly, the top of valve body assembly is fixed with rotating assembly, the top of rotating assembly is fixed with angle assembly, the inside rotation of angle assembly is connected with stop assembly, stop assembly includes pivot, the pivot is fixed in angle assembly, one side rotation of pivot is connected with fixed strip, one side of fixed strip is fixed with friction plate, the inside slide of fixed strip is connected with the pin, the end of pin is fixed with pull handle, one side of pin is fixed with top plate, one side of pin is sleeved with spring.

[0009] Further, the valve body assembly includes a valve body, the valve body is fixed with a flange at the end, the valve body is sleeved with a valve seat inside, and the valve body is fixed with a support frame on one side.

[0010] Further, the support frame is rotationally connected with a valve shaft inside, the valve shaft is fixed with a valve flap at one end, and the valve shaft is fixed with a gear one on one side.

[0011] Further, the valve shaft is fixed with a friction disc on one side, and the valve shaft is fixed with a pointer at the other end.

[0012] Further, the rotating assembly includes a fixed frame, the fixed frame is fixed at the top of the support frame, the fixed frame is rotationally connected with a rotating rod inside, the rotating rod is fixed with a gear two on one side, the gear two is engaged with the gear one, and the rotating rod is fixed with a rotating handle at the end.

[0013] Further, the angle assembly includes a stop frame, the stop frame is fixed at the top of the fixed frame, and the stop frame is fixed with a perspective cover at the top.

[0014] Further, the stop frame is provided with a clamping groove on one side, and the perspective cover is provided with a scale inside.

[0015] The utility model discloses a butterfly valve limiting locking device, including valve body assembly, the top of valve body assembly is fixed with rotating assembly, the top of rotating assembly is fixed with angle assembly, the inside rotation of angle assembly is connected with stop assembly, stop assembly includes pivot, the pivot is fixed in angle assembly, one side rotation of pivot is connected with fixed strip, one side of fixed strip is fixed with friction plate, the inside slide of fixed strip is connected with the pin, the end of pin is fixed with pull handle, one side of pin is fixed with top plate, one side of pin is sleeved with spring.

[0016] 1. Through setting stop assembly, utilize the mode that fixed strip is pulled around pivot rotation, make friction plate can be closely combined with friction disc, thereby through the friction effect, make friction disc not rotate, thus make valve shaft not drive valve flap rotation, because simple structure, thus low manufacturing cost, and because adopt friction stop, thus can carry out the opening angle of valve flap of arbitrary angle fixed valve flap.

[0017] 2. Through setting the pin, utilize the mode that the pin is inserted into the clamping groove, make fixed strip not rotate around pivot, thus make the butterfly valve not use, even if accidentally touch rotating handle, also can prevent valve flap from rotating.

[0018] 3. Through setting rotating assembly, utilize the gear two of small tooth number drive gear one of big tooth number rotation, can reach the purpose of saving labor, and through the close engagement of both, also can make valve shaft rotate immediately synchronous when rotating gear one.

[0019] 4. Through the angle component set, the operator can determine the opening angle of the valve disc through the scale pointed by the pointer on the valve shaft, so that the flow can be accurately controlled through the opening angle of the valve disc. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall structure schematic diagram of the butterfly valve limiting and locking device is provided for the utility model;

[0021] Figure 2 The rotating component schematic diagram of the butterfly valve limiting and locking device is provided for the utility model;

[0022] Figure 3 The stop component schematic diagram of the butterfly valve limiting and locking device is provided for the utility model;

[0023] Figure 4 The angle component schematic diagram of the butterfly valve limiting and locking device is provided for the utility model;

[0024] Figure 5 The pin retaining schematic diagram of the butterfly valve limiting and locking device is provided for the utility model.

[0025] In the figure: 1, valve body component; 2, valve body; 3, flange; 4, valve seat; 5, support frame; 6, valve shaft; 7, valve disc; 8, gear one; 9, friction disc; 10, pointer; 11, rotating component; 12, fixed frame; 13, rotating rod; 14, gear two; 15, rotating handle; 16, angle component; 17, stop frame; 18, perspective cover; 19, clamping groove; 20, scale; 21, stop component; 22, rotating shaft; 23, fixed strip; 24, friction plate; 25, pin retaining; 26, pull handle; 27, top plate; 28, spring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] It should be understood that when an element, or components are referred to as being "on" another element, or components, it can be directly on another element or intervening elements can also be present. In addition, it should be understood that when an element or layer is referred to as being "connected", "attached", "engaged" or "coupled" to another element or layer, it can be directly connected, attached, engaged or coupled to the other element or layer, or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] Reference will now be made to the drawings, in which Figures 1 to 5 The butterfly valve limiting locking device comprises a valve body assembly 1, a rotating assembly 11 fixed on the top of the valve body assembly 1, an angle assembly 16 fixed on the top of the rotating assembly 11, a stop assembly 21 rotatably connected in the angle assembly 16, the stop assembly 21 comprising a rotating shaft 22 rotatably connected in a fixed frame 12 and a perspective cover 18, the rotating shaft 22 fixed in the angle assembly 16, a fixed strip 23 rotatably connected on one side of the rotating shaft 22, a friction plate 24 fixed on one side of the fixed strip 23, the friction plate 24 having a certain elasticity and a very rough surface, a pin 25 slidably connected in the fixed strip 23, the pin 25 capable of being inserted into a clamping groove 19, a pull handle 26 fixed on the end of the pin 25, the pull handle 26 capable of making the pin 25 extracted from the clamping groove 19, a top plate 27 fixed on one side of the pin 25, and a spring 28 sleeved on one side of the pin 25.

[0030] Further, the valve body assembly 1 comprises a valve body 2, a flange 3 fixed on the end of the valve body 2, a valve seat 4 sleeved in the valve body 2, the valve seat 4 being a material capable of being bent and having a certain elasticity, a support frame 5 fixed on one side of the valve body 2, a valve shaft 6 rotatably connected in the support frame 5, a valve flap 7 fixed on one end of the valve shaft 6, a gear one 8 fixed on one side of the valve shaft 6, a friction disc 9 fixed on one side of the valve shaft 6, the friction disc 9 being a hard material and having a high roughness on the surface, a pointer 10 fixed on the other end of the valve shaft 6, and a scale 20 pointed by the pointer 10 being the angle of the valve flap 7 being opened.

[0031] Further, the rotating assembly 11 comprises a fixing frame 12 fixed on the top of the support frame 5, a rotating rod 13 rotatably connected in the fixing frame 12, the rotating rod 13 serves as a transition connection and support, a gear two 14 fixed on one side of the rotating rod 13, the gear two 14 meshes with the gear one 8, and a rotating handle 15 fixed on the end of the rotating rod 13.

[0032] Further, the angle assembly 16 comprises a stop frame 17 fixed on the top of the fixing frame 12, a perspective cover 18 fixed on the top of the stop frame 17, the perspective cover 18 is transparent, a clamping groove 19 formed on one side of the stop frame 17, and a scale 20 arranged in the perspective cover 18.

[0033] Working principle: in use, rotating the rotating handle 15, so that the rotating rod 13 drives the gear two 14 to rotate, so that the gear one 8 drives the valve shaft 6 to rotate, when the valve shaft 6 rotates, the valve flap 7, the friction disc 9 and the pointer 10 can be simultaneously rotated, the operator can determine the rotation angle of the valve flap 7 according to the scale 20 pointed by the pointer 10, when the valve flap 7 rotates to the appropriate angle, the fixed strip 23 can be pulled, so that the fixed strip 23 rotates around the rotating shaft 22, so that the friction plate 24 is tightly attached to the friction disc 9, so that the valve shaft 6 can be prevented from rotating through the friction disc 9, and when the fixed strip 23 is pulled with force, under the elastic force of the spring 28, the spring 28 can drive the top plate 27 to move, so that the pin 25 is inserted into the clamping groove 19, so that the friction plate 24 can be always in contact with the friction disc 9, so that the valve flap 7 can be prevented from rotating when the rotating handle 15 is accidentally collided.

[0034] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A butterfly valve limit locking device, comprising a valve body assembly (1), characterized in that: The valve body assembly (1) is fixed with a rotating assembly (11) at the top. The rotating assembly (11) is fixed with an angle assembly (16) at the top. The angle assembly (16) is rotatably connected with a stop assembly (21). The stop assembly (21) includes a rotating shaft (22). The rotating shaft (22) is fixed inside the angle assembly (16). A fixing strip (23) is rotatably connected to one side of the rotating shaft (22). A friction plate (24) is fixed to one side of the fixing strip (23). A locking pin (25) is slidably connected inside the fixing strip (23). A pull handle (26) is fixed to the end of the locking pin (25). A top plate (27) is fixed to one side of the locking pin (25). A spring (28) is sleeved on one side of the locking pin (25).

2. The butterfly valve limit locking device according to claim 1, characterized in that: The valve body assembly (1) includes a valve body (2), a flange (3) is fixed at the end of the valve body (2), a valve seat (4) is sleeved inside the valve body (2), and a support frame (5) is fixed on one side of the valve body (2).

3. The butterfly valve limit locking device according to claim 2, characterized in that: The support frame (5) is rotatably connected to a valve shaft (6), a valve disc (7) is fixed at one end of the valve shaft (6), and a gear (8) is fixed on one side of the valve shaft (6).

4. The butterfly valve limit locking device according to claim 3, characterized in that: A friction disc (9) is fixed on one side of the valve shaft (6), and a pointer (10) is fixed on the other end of the valve shaft (6).

5. A butterfly valve limit locking device according to claim 2, characterized in that: The rotating assembly (11) includes a fixed frame (12), which is fixed to the top of the support frame (5). A rotating rod (13) is rotatably connected inside the fixed frame (12). A gear two (14) is fixed on one side of the rotating rod (13). The gear two (14) meshes with the gear one (8). A handle (15) is fixed at the end of the rotating rod (13).

6. A butterfly valve limit locking device according to claim 5, characterized in that: The angle assembly (16) includes a stop frame (17) fixed to the top of the fixing frame (12), and a viewing cover (18) is fixed to the top of the stop frame (17).

7. A butterfly valve limit locking device according to claim 6, characterized in that: The stop frame (17) has a slot (19) on one side, and the inside of the transparent cover (18) has a scale (20).

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