Novel butterfly valve

Abstract

The utility model discloses a novel butterfly valve and aims to solve the problems that in the prior art, a positioning mechanism of an existing manual operation type butterfly valve is usually poor in adaptability, a user cannot select positioning mechanisms with different flow adjusting precisions according to actual fluid flow control requirements, the butterfly valve has many outdoor application scenes, and under the condition that supervision is not achieved, the positioning mechanisms cannot be adjusted accurately. The technical problem that corresponding losses are caused due to the fact that manual opening and closing are not known is solved. A disc-shaped installation base is fixedly arranged at the top of a valve body. The top surface of the disc-shaped mounting seat is detachably connected with a semi-annular positioning adjusting disc; a plurality of V-shaped limiting grooves are evenly distributed in the edge of the outer ring of the semi-circular-ring-shaped positioning adjusting disc. The semicircular ring-shaped positioning adjusting disc is provided with at least four mounting through holes which are uniformly distributed on the circumference; the semicircular ring-shaped positioning adjusting disc is in detachable bolt connection with the disc-shaped mounting seat through the mounting through hole; the positioning adjusting handle comprises an integrated handle body and a pressing part hinged to the integrated handle body.

Description

Technical Field

[0001] The utility model relates to the technical field of valve tools, in particular to a novel butterfly valve. Background Art

[0002] A butterfly valve is a regulating valve with a simple design, mainly applied in low-pressure pipeline systems for controlling the opening and closing of media. The characteristic of this valve is that its closing component is in a disc shape, and it realizes the opening and closing functions by rotating around the valve shaft. Butterfly valves are widely used in the control of various fluids, including air, water, steam, mud, oil products, liquid metals, and radioactive media, etc. In pipeline systems, butterfly valves are mainly used to cut off the fluid flow or regulate the flow rate.

[0003] Currently, there is a type of butterfly valve whose operation is manual, that is, manually adjusting the opening degree and closing state of the valve to control the fluid flow rate. Such a butterfly valve mainly consists of the following components: a valve body, a valve stem, a butterfly plate, a manual operating mechanism, and a positioning mechanism. The butterfly plate is located inside the valve body and is responsible for controlling the opening, closing, and adjusting the opening degree of the valve. The valve stem is fixedly connected to the butterfly plate, and the manual operating mechanism is installed at one end of the valve stem for operating the valve stem to rotate the butterfly plate. On the valve stem, a positioning mechanism is provided between the manual operating mechanism and the valve body, and its function is to limit the rotation angle of the butterfly plate driven by the manual operating mechanism. Currently, the positioning mechanism of such butterfly valves often has poor adaptability, and users cannot select positioning mechanisms with different flow rate adjustment precisions according to the actual fluid flow rate control requirements. At the same time, this type of butterfly valve has many outdoor application scenarios, and without supervision, it is easy to cause corresponding losses due to human ignorance of opening and closing. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a novel butterfly valve to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A novel butterfly valve includes a valve body, a valve stem disposed inside the valve body, and a butterfly plate driven by the valve stem; a disc-shaped mounting seat is fixedly provided at the top of the valve body; a semi-circular positioning and adjusting disc is detachably connected to the top surface of the disc-shaped mounting seat; a number of V-shaped limiting grooves are evenly distributed on the outer ring edge of the semi-circular positioning and adjusting disc; the semi-circular positioning and adjusting disc is provided with no less than 3 circumferentially evenly distributed mounting through holes; the semi-circular positioning and adjusting disc is detachably bolt-connected to the disc-shaped mounting seat through the mounting through holes.

[0007] A square limiting convex block is provided at the top end of the valve stem; a positioning and adjusting handle is detachably clamped to the square limiting convex block; during operation, rotating the positioning and adjusting handle can drive the valve stem to rotate together.

[0008] The positioning and adjusting handle includes an integrated handle body and a pressing part hinged to the integrated handle body; a resistance spring is provided between the integrated handle body and the pressing part; a limiting block matching the V-shaped limiting groove is provided at the front end of the pressing part; during operation, pressing the pressing part to overcome the elastic force of the resistance spring, and using the fulcrum effect at the hinged part of the two, the limiting block can be driven to disengage from the V-shaped limiting groove; conversely, under the elastic force of the resistance spring in the natural state, the limiting block is limited and clamped in the corresponding V-shaped limiting groove.

[0009] The integrated handle body includes a first through-square limiting groove provided at one end close to the valve stem, a circular limiting groove provided at the top of the first through-square limiting groove, and a wing screw for threadedly connecting the integrated handle body and the valve stem; the first through-square limiting groove matches the square limiting convex block, and the two are in contact and limitedly sleeved during installation; the wing screw includes a wing handle, a circular limiting convex block matching the circular limiting groove, and a bolt part provided at the bottom of the circular limiting convex block; a threaded hole matching the bolt part is provided at the top of the square limiting convex block; during installation, the circular limiting convex block is in limiting contact with the circular limiting groove; the wing screw threadedly connects the integrated handle body and the valve stem through the threaded connection between the bolt part and the threaded hole.

[0010] Preferably, an ergonomic arc-shaped convex part is provided at the part of the integrated handle body in contact with the palm; the arc-shaped convex part is covered with a first flexible rubber layer.

[0011] Preferably, an ergonomic arc-shaped concave part is provided at the part of the pressing part in contact with the finger; the arc-shaped concave part is covered with a second flexible rubber layer.

[0012] Preferably, the wing handle is arranged in a V shape, and a plurality of anti-slip grooves are provided on the surface.

[0013] Preferably, when the valve body is in the working state of removing the positioning and adjusting handle, a locking disc for locking the valve stem is detachably connected to the top of the disc-shaped mounting seat; the locking disc includes a second through-square limiting groove provided at the center and matching the square limiting convex block, a through semi-circular locking groove concentric with the locking disc, and a locking nut; during operation, the locking disc is sleeved on the square limiting convex block, and at this time the locking nut passes through the through semi-circular locking groove and is fixedly threadedly connected to the disc-shaped mounting seat, so as to realize the position locking of the locking disc and the valve stem.

[0014] Compared with the prior art, the novel butterfly valve of the present application has the following beneficial effects:

[0015] The utility model adopts a semi-circular positioning and adjusting disc with a detachable connection and a positioning and adjusting handle with a quick-detachable connection. In the normal use state, rotating the positioning and adjusting handle can drive the valve stem to rotate together to control the opening and closing angle of the butterfly valve. When rotated to the required angle, the limiting block of the positioning and adjusting handle is clamped in the corresponding V-shaped limiting groove of the semi-circular positioning and adjusting disc, so as to realize the control of the required flow rate. The V-shaped limiting grooves with different numbers and position distributions in the semi-circular positioning and adjusting disc are directly related to the opening and closing angle accuracy of the butterfly valve, and further affect the flow rate adjustment accuracy. The design of the detachable semi-circular positioning and adjusting disc combined with the quick-detachable positioning and adjusting handle facilitates users to select the corresponding semi-circular positioning and adjusting disc according to the specific flow rate adjustment accuracy they need, meeting the different needs of users. At the same time, when the butterfly valve is in an outdoor environment, the positioning and adjusting handle can be removed, and the position of the valve stem can be locked with a locking disc to avoid corresponding losses caused by accidental opening and closing by people. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0017] Figure 2 is a schematic structural diagram of another perspective of an embodiment of the utility model;

[0018] Figure 3 is a schematic structural diagram of another perspective of an embodiment of the utility model;

[0019] Figure 4 is an exploded schematic view of the connection structure of the semi-circular positioning and adjusting disc in an embodiment of the utility model;

[0020] Figure 5 is an exploded schematic view of the connection structure of the positioning and adjusting handle in an embodiment of the utility model;

[0021] Figure 6 is an exploded schematic view of the connection structure of another perspective of the positioning and adjusting handle in an embodiment of the utility model;

[0022] Figure 7 is an exploded schematic view of the connection structure of the locking disc in an embodiment of the utility model.

[0023] Reference numerals: 1, valve body; 11, disc-shaped mounting seat; 2, valve stem; 21, square limiting projection; 22, threaded hole; 3, butterfly plate; 4, positioning and adjusting handle; 41, integrated handle body; 411, first through-square limiting groove; 412, circular limiting groove; 413, arc-shaped convex part; 42, butterfly wing screw; 421, butterfly wing handle; 422, anti-slip groove; 423, circular limiting projection; 424, bolt part; 43, pressing part; 431, limiting block; 432, arc-shaped concave part; 44, resistance spring; 5, locking disc; 51, second through-square limiting groove; 52, through-semicircular locking groove; 53, locking nut; 6, semi-circular positioning and adjusting disc; 61, V-shaped limiting groove; 62, mounting through-hole. Detailed implementation manners

[0024] The following is a further detailed description through specific implementation manners:

[0025] Embodiment 1

[0026] As Figures 1-6 shown, this embodiment shows a new type of butterfly valve, including a valve body 1, a valve stem 2 built in the valve body 1, and a butterfly plate 3 driven by the valve stem 2. This valve is a manually operated butterfly valve; a disc-shaped mounting seat 11 is fixedly provided at the top of the valve body 1 and integrally formed with the valve body 1; the top surface of the disc-shaped mounting seat 11 is detachably connected with a semi-circular positioning and adjusting disc 6, which is convenient to replace the semi-circular positioning and adjusting disc 6 according to the requirements of different flow control precisions of users; a number of V-shaped limiting grooves 61 are evenly distributed on the outer ring edge of the semi-circular positioning and adjusting disc 6. Specifically, the different numbers and positions of the V-shaped limiting grooves 61 in the semi-circular positioning and adjusting disc 6 are directly related to the opening and closing angle precision of the butterfly valve, and thus affect the flow regulation precision; the semi-circular positioning and adjusting disc 6 is provided with not less than 3 circumferentially distributed mounting through-holes 62; the semi-circular positioning and adjusting disc 6 is detachably bolt-connected to the disc-shaped mounting seat 11 through the mounting through-holes 62.

[0027] In this embodiment, a square limiting projection 21 is provided at the top end of the valve stem 2; the square limiting projection 21 is detachably clamped with a positioning and adjusting handle 4; during operation, rotating the positioning and adjusting handle 4 can drive the valve stem 2 to rotate together.

[0028] In this embodiment, the positioning and adjusting handle 4 includes an integral handle body 41 and a pressing part 43 hinged to the integral handle body 41; a resistance spring 44 is provided between the integral handle body 41 and the pressing part 43; a limiting block 431 matching the V-shaped limiting groove 61 is provided at the front end of the pressing part 43; during operation, pressing the pressing part 43 to overcome the elastic force of the resistance spring 44, and using the fulcrum effect at the hinge between the two, the limiting block 431 can be driven to disengage from the V-shaped limiting groove 61; conversely, under the elastic force of the resistance spring 44 in its natural state, the limiting block 431 is limited and clamped in the corresponding V-shaped limiting groove 61. Specifically, when it is necessary to control the flow rate by adjusting the opening and closing angle of the butterfly plate 3, rotating the positioning and adjusting handle 4 can drive the valve stem 2 to rotate together to achieve control of the opening and closing angle of the butterfly valve. When rotated to the required angle, the limiting block 431 of the positioning and adjusting handle 4 is limited and clamped in the corresponding V-shaped limiting groove 61 of the semi-circular positioning and adjusting disc 6, thereby achieving control of the required flow rate.

[0029] In this embodiment, the integral handle body 41 includes a first through-type square limiting groove 411 provided at one end close to the valve stem 2, a circular limiting groove 412 provided at the top of the first through-type square limiting groove 411, and a butterfly wing screw 42 for threadedly connecting the integral handle body 41 and the valve stem 2. The butterfly wing screw 42 facilitates quick disassembly and assembly; the first through-type square limiting groove 411 matches the square limiting convex block 21, and the two are in contact and limitedly sleeved during installation; the butterfly wing screw 42 includes a butterfly wing handle 421, a circular limiting convex block 423 matching the circular limiting groove 412, and a bolt part 424 provided at the bottom of the circular limiting convex block 423; a threaded hole 22 matching the bolt part 424 is provided at the top of the square limiting convex block 21; specifically, during installation, first limit and clamp the circular limiting groove 412 on the circular limiting convex block 423, and then threadedly connect the bolt part 424 of the butterfly wing screw 42 with the threaded hole 22 of the square limiting convex block 21, so as to quickly threadedly connect the integral handle body 41 and the valve stem 2; conversely, the integral handle body 41 and the valve stem 2 can be quickly separated.

[0030] Embodiment 2

[0031] As Figures 1-6 shown, another embodiment shows a new type of butterfly valve on the basis of Embodiment 1. In a further feasible implementation of this embodiment, as Figure 5 shown, an ergonomic arc-shaped protrusion 413 is provided at the part of the integral handle body 41 in contact with the palm; the arc-shaped protrusion 413 is covered with a first flexible rubber layer, which improves the user's holding comfort, facilitates exerting force, and improves work efficiency.

[0032] Embodiment 3

[0033] As Figures 1-6 shown, another embodiment shows a new type of butterfly valve based on Embodiment 1. In a further implementable manner of this embodiment, as Figure 6 shown, an ergonomic arc-shaped recess 432 is provided at the contact part between the pressing part 43 and the finger; the arc-shaped recess 432 is covered with a second flexible rubber layer to improve the user's holding comfort, facilitate exerting force, and improve work efficiency.

[0034] Embodiment 4

[0035] As Figures 1-6 shown, another embodiment shows a new type of butterfly valve based on Embodiment 1. In a further implementable manner of this embodiment, as Figures 5-6 shown, the butterfly wing handle 421 is arranged in a V shape, and a plurality of anti-slip grooves 422 are provided on the surface, which is convenient for the disassembly and assembly of the butterfly wing screw 42, and thus improves the disassembly and assembly efficiency of the positioning adjustment handle 4.

[0036] Embodiment 5

[0037] As Figures 1-7 shown, another embodiment shows a new type of butterfly valve based on Embodiment 1. In a further implementable manner of this embodiment, as Figure 7 shown, when the valve body 1 is in the working state of removing the positioning adjustment handle 4, a locking disc 5 for locking the valve stem 2 is detachably connected to the top of the disc-shaped mounting seat 11; the locking disc 5 includes a second through-type square limit groove 51 provided at the center and matching the square limit convex block 21, a through-type semi-circular locking groove 52 concentric with the locking disc 5, and a locking nut 53; during work, first sleeved the locking disc 5 on the square limit convex block 21, and then passed the locking nut 53 through the through-type semi-circular locking groove 52 and fixedly thread-connected with the disc-shaped mounting seat 11, so as to realize the position locking of the locking disc 5 and the valve stem 2. Specifically, when the butterfly valve is in an outdoor environment, the positioning adjustment handle 4 can be removed, and the position of the valve stem 2 can be locked with the locking disc 5 to avoid corresponding losses caused by accidental opening and closing by humans.

[0038] The above are only the embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners in the specification can be used to explain the content of the claims.

Claims

1. A new type of butterfly valve, comprising a valve body, a valve stem built into the valve body and a butterfly plate driven by the valve stem, characterized in that: A disc-shaped mounting seat is fixedly provided on the top of the valve body; a semi-circular positioning adjustment disk is detachably connected to the top surface of the disc-shaped mounting seat; a plurality of V-shaped limit grooves are evenly distributed on the outer ring edge of the semi-circular positioning adjustment disk; the semi-circular positioning adjustment disk is provided with no less than 3 mounting through holes evenly distributed around the circumference; the semi-circular positioning adjustment disk is detachably bolted to the disc-shaped mounting seat through the mounting through holes; A square limiting protrusion is provided at the top of the valve stem; a positioning adjustment handle is detachably connected to the square limiting protrusion; when working, the positioning adjustment handle is rotated to drive the valve stem to rotate together; The positioning adjustment handle comprises an integrated handle body and a pressing portion hinged to the integrated handle body; a resistance spring is provided between the integrated handle body and the pressing portion; a limiting block matching the V-shaped limiting groove is provided at the front end of the pressing portion; when working, the pressing portion is pressed to overcome the elastic force of the resistance spring, and the limiting block can be driven to disengage from the V-shaped limiting groove by utilizing the fulcrum effect at the hinge of the two; conversely, the limiting block is limitedly engaged in the corresponding V-shaped limiting groove under the elastic force of the resistance spring in the natural state; The integrated handle body includes a first through-type square limiting groove arranged near one end of the valve stem, a circular limiting groove arranged at the top of the first through-type square limiting groove and a butterfly wing screw for threadedly connecting the integrated handle body and the valve stem; the first through-type square limiting groove matches the square limiting protrusion, and the two are contact-type limiting sleeves during installation; the butterfly wing screw includes a butterfly wing handle, a circular limiting protrusion matching the circular limiting groove and a bolt portion arranged at the bottom of the circular limiting protrusion; a threaded hole matching the bolt portion is provided on the top of the square limiting protrusion; during installation, the circular limiting protrusion and the circular limiting groove are limitedly abutted; the butterfly wing screw threadably connects the integrated handle body and the valve stem through the threaded connection between the bolt portion and the threaded hole.

2. A new type of butterfly valve according to claim 1, characterized in that: The part of the integrated handle body that contacts the palm is provided with an ergonomically designed arc-shaped protrusion; the arc-shaped protrusion is covered with a first flexible rubber layer.

3. A new type of butterfly valve according to claim 1, characterized in that: The contact position between the pressing part and the finger is provided with an ergonomically designed arc-shaped recessed portion; the arc-shaped recessed portion is covered with a second flexible rubber layer.

4. A novel butterfly valve according to claim 1, characterized in that: The butterfly wing handle is arranged in a V shape, and a plurality of anti-slip grooves are arranged on the surface.

5. A novel butterfly valve according to claim 1, characterized in that: When the valve body is in the working state of removing the positioning and adjusting handle, a locking disc for locking the valve stem is detachably connected to the top of the disc-shaped mounting seat; the locking disc includes a second through-type square limiting groove arranged at the center and matching the square limiting protrusion, a through-type semi-circular ring-shaped locking groove and a locking nut arranged concentrically with the locking disc; when working, the locking disc is sleeved on the square limiting protrusion, and the locking nut is now threadedly connected to the disc-shaped mounting seat through the through-type semi-circular ring-shaped locking groove, thereby realizing position locking of the locking disc and the valve stem.

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