Corrosion-resistant butterfly valve

Abstract

The utility model relates to a corrosion-resistant butterfly valve which comprises a valve body, a valve rod is rotationally connected to the middle of the top of the valve body, the lower end of the valve rod penetrates into the valve body, and a valve clack is fixedly connected to the lower end of the valve rod. Through the arrangement of a connecting block, a fixed block, an inserting hole, a fixed disc, a locking mechanism, a connecting block, a movable block, an inserting rod, a movable groove, a poke rod, a spring, a sliding groove and a sliding block, a valve rod can be locked, so that when a worker touches a handle accidentally, the situation that a valve clack rotates is avoided, the stability of the valve clack is improved, and the service life of the valve clack is prolonged. The situation that the opening and closing states of the valve clack are switched due to accidental touch of a worker or the opening angle of the valve clack is changed to affect the passing speed of a medium is avoided, the length of the device can be adjusted through arrangement of a connecting pipe, a flange plate, a fixing plate and a screw rod, the device can be connected with a pipeline without adjusting the length of the pipeline, and the use is convenient. Operation is simple, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a corrosion-resistant butterfly valve. Background Art

[0002] A butterfly valve is a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve stem to open and close. It mainly plays a role of cutting off and throttling in pipelines. The opening and closing part of a butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0003] The existing butterfly valves have poor safety. When the staff accidentally touches the valve handle, the valve handle is likely to rotate, and the butterfly plate of the butterfly valve is affected and rotates, causing the valve disc to switch between the open and closed states or the valve disc opening angle to change, affecting the speed at which the medium passes. In addition, during the installation of the existing butterfly valves, due to the different spacings between pipelines and the fixed length of the butterfly valve, the position of the pipeline needs to be changed during installation to adapt to the length of the butterfly valve. The process of adjusting the pipeline length is rather cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a corrosion-resistant butterfly valve to solve the problems mentioned in the above background technology.

[0005] The technical scheme of the utility model is a corrosion-resistant butterfly valve, comprising a valve body, a valve stem is rotatably connected to the middle part of the top of the valve body, the lower end of the valve stem penetrates into the interior of the valve body, a valve disc is fixedly connected to the lower end of the valve stem, the valve disc is rotatably connected to the interior of the valve body, a handle is fixedly connected to the upper end surface of the valve stem, a connecting block is fixedly sleeved on the middle part of the surface of the valve body, the number of the connecting blocks is two, the two connecting blocks are respectively arranged on the left and right sides of the valve stem, the facing surfaces of the two connecting blocks are commonly fixedly connected with a fixing block near the top, a plug hole is provided on the end surface of the fixing block away from the center of the circle, a fixing disk is fixedly sleeved on the upper end of the surface of the valve stem, a locking mechanism is fixedly connected to the lower end surface of the fixing disk away from the center of the circle, the number of the locking mechanisms is two, the two locking mechanisms are arranged in a circular array about the center of the fixed disk, the locking mechanism cooperates with the plug hole, the left and right ends of the valve body are movably sleeved with connecting pipes, and the ends of the two connecting pipes away from the valve stem are fixedly connected with flanges.

[0006] In one embodiment, the locking mechanism includes a connecting sleeve, the top surface of the connecting sleeve is fixedly connected to the lower end surface of the fixed plate near the edge, the inner cavity of the connecting sleeve is movably sleeved with a movable block, the bottom of the connecting sleeve is movably sleeved with an insertion rod, the upper end surface of the insertion rod is fixedly connected to the bottom surface of the movable block, the lower end of the insertion rod is inserted into the socket, the front side of the connecting sleeve is provided with a movable groove, the front side of the movable block is fixedly connected with a toggle rod, the middle part of the toggle rod is slidably connected in the movable groove, and the front end of the toggle rod passes through to the outside of the connecting sleeve.

[0007] In one embodiment, a spring is fixedly connected to the top surface of the movable block, and the top surface of the spring is fixedly connected to the top surface inside the connecting sleeve.

[0008] In one embodiment, sliding grooves are provided on the left and right sides of the inner wall of the connecting sleeve, and sliders are slidably connected in the sliding grooves on the left and right sides, and the facing surfaces of the sliders on the left and right sides are fixedly connected to the left and right sides of the movable block respectively.

[0009] In one embodiment, the top and bottom of the facing end surfaces of the two connecting blocks are both connected to fixed plates by bearings, a screw is threadedly sleeved on the middle part of the surface of each fixing plate, the bottom surfaces of the two upper fixing plates are respectively fixedly connected to the tops of the surfaces of the two connecting pipes, and the top surfaces of the two lower fixing plates are respectively fixedly connected to the bottoms of the surfaces of the two connecting pipes.

[0010] In one embodiment, a movable hole is opened in the middle of the fixing block, and the middle of the surface of the valve stem is movably sleeved in the movable hole.

[0011] In one embodiment, the number of the jacks is several, and the several jacks are arranged in a circular array with respect to the active hole.

[0012] The beneficial effects provided by the utility model are:

[0013] 1. The valve stem can be locked by setting the connecting block, fixed block, jack, fixed plate, locking mechanism, connecting block, movable block, plug rod, movable groove, toggle rod, spring, slide groove and slider, so that when the staff accidentally touches the handle, the valve disc will not rotate, thereby improving the stability of the valve disc and avoiding the switching of the opening and closing state of the valve disc due to the staff's accidental touch, or the change of the valve disc opening angle affecting the speed of the medium passing through.

[0014] 2. Through the setting of connecting pipes, flanges, fixing plates and screws, the length of the device can be adjusted. The device can be connected to the pipeline without adjusting the length of the pipeline. It is simple to operate and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is the front view of the utility model;

[0016] Figure 2 It is the main cross-sectional view of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0018] Figure 4 for Figure 3 A magnified view of the structure at B in the middle;

[0019] Figure 5 is a side sectional view of the connection block;

[0020] Figure 6 A top view of the fixed block.

[0021] In the attached drawings, 1. valve body; 2. valve stem; 3. valve disc; 4. handle; 5. connecting block; 6. fixed block; 7. socket; 8. fixed plate; 9. locking mechanism; 91. connecting block; 92. movable block; 93. plug rod; 94. movable groove; 95. toggle rod; 96. spring; 97. slide groove; 98. slider; 10. connecting pipe; 11. flange; 12. fixed plate; 13. screw; 14. movable hole. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0023] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] In one embodiment, Figure 1-6As shown, a corrosion-resistant butterfly valve comprises a valve body 1, a valve stem 2 is rotatably connected to the middle of the top of the valve body 1, the lower end of the valve stem 2 penetrates into the interior of the valve body 1, a valve flap 3 is fixedly connected to the lower end of the valve stem 2, the valve flap 3 is rotatably connected to the interior of the valve body 1, a handle 4 is fixedly connected to the upper end surface of the valve stem 2, a connecting block 5 is fixedly sleeved in the middle of the surface of the valve body 1, the connecting blocks 5 are in two pieces, the two connecting blocks 5 are respectively arranged on the left and right sides of the valve stem 2, and the facing surfaces of the two connecting blocks 5 are fixedly connected together near the top. A fixing block 6 is connected, and a socket 7 is provided on the end face of the fixing block 6 away from the center of the circle. A fixing disk 8 is fixedly sleeved on the upper end of the surface of the valve stem 2, and a locking mechanism 9 is fixedly connected to the lower end face of the fixing disk 8 away from the center of the circle. There are two locking mechanisms 9, and the two locking mechanisms 9 are arranged in a circular array about the center of the circle of the fixing disk 8. The locking mechanisms 9 cooperate with the socket 7. Connecting pipes 10 are movably sleeved on the left and right ends of the valve body 1, and flanges 11 are fixedly connected to the ends of the two connecting pipes 10 away from the valve stem 2.

[0025] In order to facilitate the fixation of the fixed disk 8 and thus lock the valve stem 2, the locking mechanism 9 includes a connecting sleeve 91, the top surface of the connecting sleeve 91 is fixedly connected to the lower end surface of the fixed disk 8 near the edge, the inner cavity of the connecting sleeve 91 is movably sleeved with a movable block 92, the bottom of the connecting sleeve 91 is movably sleeved with an insertion rod 93, the upper end surface of the insertion rod 93 is fixedly connected to the bottom surface of the movable block 92, the lower end of the insertion rod 93 is inserted into the socket 7, a movable groove 94 is provided on the front side of the connecting sleeve 91, a toggle rod 95 is fixedly connected to the front side of the movable block 92, the middle part of the toggle rod 95 is slidably connected in the movable groove 94, and the front end of the toggle rod 95 passes through the outside of the connecting sleeve 91.

[0026] In order to improve the stability of the insertion rod 93 in the socket 7 so that the insertion rod 93 will not be easily removed from the socket 7, the top surface of the movable block 92 is fixedly connected with a spring 96, and the top surface of the spring 96 is fixedly connected to the top surface inside the connecting sleeve 91.

[0027] In order to limit the movable block 92 and prevent the movable block 92 from rotating, so that the insertion rod 93 can move up and down more stably, sliding grooves 97 are opened on the left and right sides of the inner wall of the connecting sleeve 91, and sliders 98 are slidably connected in the left and right sliding grooves 97. The facing surfaces of the left and right sliders 98 are fixedly connected to the left and right sides of the movable block 92 respectively.

[0028] In order to facilitate locking of the connecting pipe 10 after adjusting its position, the top and bottom of the facing end faces of the two connecting blocks 5 are bearing-connected with fixing plates 12, and the middle part of the surface of each fixing plate 12 is threadedly sleeved with a screw 13. The bottom surfaces of the two upper fixing plates 12 are fixedly connected to the tops of the surfaces of the two connecting pipes 10, and the top surfaces of the two lower fixing plates 12 are fixedly connected to the bottoms of the surfaces of the two connecting pipes 10.

[0029] In order to allow the valve stem 2 to pass through the middle of the fixing block 6 and prevent the fixing block 6 from hindering the rotation of the valve stem 2 , a movable hole 14 is opened in the middle of the fixing block 6 , and the middle part of the surface of the valve stem 2 is movably sleeved in the movable hole 14 .

[0030] In order to lock the valve stem 2 when the valve flap 3 is adjusted to different angles, the number of the insertion holes 7 is several, and the several insertion holes 7 are arranged in a ring array with respect to the movable hole 14 .

[0031] Working principle: When the utility model is used, when adjusting the opening and closing of the device or the angle of the valve disc 3, first push the toggle rod 95 upward, the toggle rod 95 drives the movable block 92 to rise, the movable block 92 drives the plug rod 93 to rise, so that the lower end of the plug rod 93 is pulled out from the insertion hole 7, and the lock of the valve stem 2 is released, and then hold the handle 4 and twist it, the handle 4 drives the valve stem 2 to rotate, and the valve stem 2 drives the valve disc 3 to rotate. After adjusting the angle of the valve disc 3, release the lifted toggle rod 95, at this time, the elastic potential energy of the spring 96 pushes the movable block 92 downward, the movable block 92 drives the plug rod 93 to descend, so that the lower end of the plug rod 93 is inserted into the corresponding insertion hole 7, and the fixed plate 8 is fixed, thereby locking the valve stem 2. When the staff accidentally touches the handle 4, the valve flap 3 will not rotate, which improves the stability of the valve flap 3 and avoids the valve flap 3 from switching between the open and closed states due to the staff's accidental touch, or the valve flap 3 opening angle changes, which affects the speed of the medium passing through. When connecting the device to the pipeline, twist the screw 13, and the screw 13 rotates to move the fixed plate 12 left and right. The fixed plate 12 drives the connecting pipe 10 to move left and right, and adjusts the position of the connecting pipe 10 on the valve body 1 so that the two flanges 11 can be flange-connected to the two pipelines respectively. The length of the device can be adjusted, and the device can be connected to the pipeline without adjusting the length of the pipeline. The operation is simple and the practicability is high.

[0032] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A corrosion-resistant butterfly valve, characterized in that: The closure of the valve body is a function of the valve stem and the closure of the valve body being a function of the valve body being a function of the valve stem and the closure of the valve body being a function of the valve stem.

2. A corrosion-resistant butterfly valve according to claim 1, characterized in that: The locking mechanism includes a connecting sleeve, the top surface of the connecting sleeve is fixedly connected to the lower end surface of the fixed plate near the edge, the inner cavity of the connecting sleeve is movably sleeved with a movable block, the bottom of the connecting sleeve is movably sleeved with an insertion rod, the upper end surface of the insertion rod is fixedly connected to the bottom surface of the movable block, the lower end of the insertion rod is inserted into the socket, the front side of the connecting sleeve is provided with a movable groove, the front side of the movable block is fixedly connected with a toggle rod, the middle part of the toggle rod is slidably connected in the movable groove, and the front end of the toggle rod passes through the outside of the connecting sleeve.

3. A corrosion-resistant butterfly valve according to claim 2, characterized in that: The top surface of the movable block is fixedly connected with a spring, and the top surface of the spring is fixedly connected to the top surface inside the connecting sleeve.

4. A corrosion-resistant butterfly valve according to claim 2, characterized in that: Slide grooves are provided on the left and right sides of the inner wall of the connecting sleeve, and sliders are slidably connected in the slide grooves on the left and right sides. The facing surfaces of the sliders on the left and right sides are fixedly connected to the left and right sides of the movable block respectively.

5. The corrosion-resistant butterfly valve according to claim 1, characterized in that: The top and bottom of the facing end surfaces of the two connecting blocks are both connected to fixed plates by bearings, and a screw is threadedly sleeved on the middle part of the surface of each fixing plate. The bottom surfaces of the two upper fixing plates are respectively fixedly connected to the tops of the surfaces of the two connecting pipes, and the top surfaces of the two lower fixing plates are respectively fixedly connected to the bottoms of the surfaces of the two connecting pipes.

6. The corrosion-resistant butterfly valve according to claim 1, characterized in that: A movable hole is provided in the middle of the fixed block, and the middle of the surface of the valve stem is movably sleeved in the movable hole.

7. The corrosion-resistant butterfly valve according to claim 1, characterized in that: The number of the jacks is several, and the jacks are arranged in a ring array with respect to the active hole.

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