Flange type butterfly valve

Abstract

The utility model relates to a flange type butterfly valve which comprises a valve body, a valve clack is rotatably connected to an inner cavity of the valve body, a sealing ring is fixedly connected to the surface of the valve clack in a sleeved mode, a two-way screw is made to rotate by twisting a second handle, and the two-way screw rotates to enable two connecting blocks to move oppositely. The two locking blocks are inserted into the first inserting grooves in the two fixing blocks correspondingly to lock the valve rod, the situation that when the valve clack is closed, a first handle is mistakenly touched, the valve rod rotates, and the valve clack is opened is avoided, the practicability of the device is improved, after the valve clack is opened, the valve rod drives the two inserting blocks to face the locking blocks on the left side and the right side correspondingly, and the locking effect is good. And then a second handle is twisted, so that an inserting block is inserted into a second inserting groove in a locking block, the valve rod is locked, the situation that due to the conditions that water flow impacts or mistakenly touches a first handle, the internal included angle becomes small after the valve clack rotates, and the flowing speed of water flow is affected is avoided, and the practicability of the device is improved.

Description

Technical Field

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

[0002] The flange butterfly valve has a simple structure, small size, and light weight. It is composed of only a few parts and can be quickly opened and closed by rotating 90°. It is easy to operate. At the same time, the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics.

[0003] The valve stem on the existing flange butterfly valve is not stable enough. When the valve disc is closed, the valve stem may rotate easily due to the staff accidentally touching the handle, causing the valve disc to loosen, resulting in unnecessary consequences. Utility Model Content

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

[0005] The technical scheme of the utility model is a flange type butterfly valve, comprising a valve body, the inner cavity of the valve body is rotatably connected with a valve disc, the surface of the valve disc is fixedly sleeved with a sealing ring, the top of the valve disc is fixedly connected with a valve stem, the middle part of the surface of the valve stem is movably sleeved on the top of the valve body and penetrates to the outside of the top of the valve body, the top of the valve body is fixedly connected with an outer frame, the upper end of the valve stem is movably sleeved in the outer frame, the middle part of the side surface of the valve stem is fixedly connected with a fixing block, a first slot is provided on a side of the fixing block away from the valve stem, a bidirectional screw is connected by a bearing at the left side of the inner wall of the outer frame near the front side, a first through hole is provided at the right side of the valve body near the front side, the right end of the bidirectional screw surface is bearingly sleeved in the first through hole and penetrates to the outside of the right side of the outer frame, a second handle is fixedly connected to the right end face of the bidirectional screw, the left and right ends of the bidirectional screw surface are both threadedly sleeved with connecting blocks, the middle parts of the two connecting blocks close to the valve stem are both fixedly connected with locking blocks, and the locking blocks are adapted to the first slot.

[0006] In one embodiment, a second through hole is opened in the middle of the top of the outer frame, the upper end bearing of the valve stem surface is sleeved in the second through hole and penetrates to the outside of the top of the outer frame, and the upper end surface of the valve stem is fixedly connected to a first handle.

[0007] In one embodiment, the rear sides of the surfaces of the two connection blocks are movably sleeved with a guide rod, and the left and right end surfaces of the guide rod are respectively fixedly connected to the left and right sides of the inner wall of the outer frame near the rear side.

[0008] In one embodiment, an insert block is fixedly connected to the middle of the side surface of the valve stem, a second slot is formed on a side of the locking block close to the valve stem, and the insert block is adapted to fit into the second slot.

[0009] In one embodiment, the inserting blocks and the fixing blocks are arranged crosswise, and the number of the inserting blocks and the number of the fixing blocks are both two, and they are arranged in a ring array.

[0010] The beneficial effects provided by the utility model are:

[0011] 1. The bidirectional screw is rotated by twisting the second handle. The rotation of the bidirectional screw causes the two connecting blocks to move toward each other, so that the two locking blocks are respectively inserted into the first slots on the two fixed blocks to lock the valve stem. This prevents the valve stem from rotating due to the accidental touching of the first handle when the valve disc is closed, thereby improving the practicality of the device.

[0012] 2. After the valve disc is opened, the valve stem drives the two plugs toward the locking blocks on the left and right sides respectively, and then the second handle is twisted to insert the plug into the second slot on the locking block to lock the valve stem, thereby preventing the internal angle of the valve disc from becoming smaller after rotation due to water flow impact or accidental touching of the first handle, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is the main cross-sectional view of the utility model;

[0015] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0016] Figure 4 A top view of the outer frame.

[0017] In the accompanying drawings, 1, valve body; 2, valve disc; 3, sealing ring; 4, valve stem; 41, first handle; 5, outer frame; 6, fixing block; 7, first slot; 8, bidirectional screw; 9, second handle; 10, connecting block; 11, locking block; 12, guide rod; 13, plug block; 14, second slot. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] In one embodiment, Figure 1-4 As shown, a flange type butterfly valve comprises a valve body 1, the inner cavity of the valve body 1 is rotatably connected with a valve disc 2, the surface of the valve disc 2 is fixedly sleeved with a sealing ring 3, the top of the valve disc 2 is fixedly connected with a valve stem 4, the middle part of the surface of the valve stem 4 is movably sleeved on the top of the valve body 1 and penetrates to the outside of the top of the valve body 1, the top of the valve body 1 is fixedly connected with an outer frame 5, the upper end of the valve stem 4 is movably sleeved in the outer frame 5, the middle part of the side surface of the valve stem 4 is fixedly connected with a fixing block 6, and the fixing block 6 is provided with a first slot on the side away from the valve stem 4 7. A bidirectional screw 8 is connected to the bearing at the left side of the inner wall of the outer frame 5 near the front side, and a first through hole is opened at the right side of the valve body 1 near the front side. The right end bearing of the surface of the bidirectional screw 8 is sleeved in the first through hole and penetrates to the outside of the right side of the outer frame 5. A second handle 9 is fixedly connected to the right end face of the bidirectional screw 8. The left and right ends of the surface of the bidirectional screw 8 are both threadedly sleeved with connecting blocks 10. The middle parts of the two connecting blocks 10 near the valve stem 4 are fixedly connected with locking blocks 11, and the locking blocks 11 are adapted to the first slot 7.

[0021] In order to facilitate twisting the valve stem 4 to rotate outside the outer frame 5, a second through hole is opened in the middle of the top of the outer frame 5, and the upper end bearing on the surface of the valve stem 4 is sleeved in the second through hole and penetrates to the outside of the top of the outer frame 5, and the upper end surface of the valve stem 4 is fixedly connected to the first handle 41.

[0022] In order to limit the connecting block 10 and prevent the connecting block 10 from rotating with the bidirectional screw 8, the rear sides of the surfaces of the two connecting blocks 10 are movably sleeved with a guide rod 12, and the left and right end faces of the guide rod 12 are respectively fixedly connected to the left and right sides of the inner wall of the outer frame 5 near the rear side.

[0023] In order to lock the valve stem 4 after the valve stem 4 is rotated 90° to open the valve disc 2, and to avoid the flow rate of water flowing through the valve disc 2 due to the internal angle becoming smaller after the valve disc 2 rotates due to water flow impact or accidental touching of the first handle 41, thereby improving the practicality of the device, a plug block 13 is fixedly connected to the middle part of the side surface of the valve stem 4, and a second slot 14 is opened on the side of the locking block 11 close to the valve stem 4, and the plug block 13 is adapted to the second slot 14.

[0024] In order to enable the insert block 13 to be inserted into the second slots 14 on the left and right locking blocks 11 respectively after the valve stem 4 rotates 90°, the insert block 13 and the fixing block 6 are arranged crosswise, and the number of the insert block 13 and the fixing block 6 are both two, and they are arranged in a ring array.

[0025] Working principle: first twist the second handle 9, the second handle 9 drives the bidirectional screw 8 to rotate, the rotation of the bidirectional screw 8 causes the two connecting blocks 10 to move toward each other, the two connecting blocks 10 respectively drive the two locking blocks 11 to move toward each other, so that the two locking blocks 11 are respectively inserted into the first slots 7 on the two fixing blocks 6, thereby fixing the valve stem 4 so that the valve stem 4 cannot rotate, and avoiding the situation that when the valve flap 2 is closed, the valve stem 4 is rotated due to accidental touching of the first handle 41, so that the valve flap 2 is opened. When the valve flap 2 needs to be opened, first twist the second handle 9 in the opposite direction, so that the two locking blocks 11 move away from each other and are pulled out from the first slots 7 on the two fixing blocks 6, releasing the valve stem 4. The valve stem 4 is locked, and then the first handle 41 is twisted. The first handle 41 drives the valve stem 4 to rotate, and the valve stem 4 drives the valve disc 2 to rotate 90°, so that water can pass through the inside of the valve disc 2. At this time, the valve stem 4 drives the two plug blocks 13 toward the locking blocks 11 on the left and right sides respectively, and then the second handle 9 is twisted forward to make the two locking blocks 11 move toward each other, so that the two plug blocks 13 are respectively inserted into the second slots 14 on the two locking blocks 11, and the valve stem 4 is fixed. Therefore, when the valve disc 2 is opened, the internal angle of the valve disc 2 after rotation is avoided to be reduced due to water flow impact or accidental touching of the first handle 41, thereby improving the practicality of the device.

[0026] 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.

[0027] 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 flange type butterfly valve, characterized in that: The closure of the valve body is constructed by a process of extruding a plurality of camshafts and a plurality of camshafts, wherein the camshafts are connected to a plurality of camshafts and a plurality of camshafts are connected in a plurality of ways. The camshafts are connected in a plurality of ways, wherein the ...

2. A flange type butterfly valve according to claim 1, characterized in that: A second through hole is opened in the middle of the top of the outer frame, the upper end bearing of the valve stem surface is sleeved in the second through hole and penetrates to the outside of the top of the outer frame, and the upper end surface of the valve stem is fixedly connected to a first handle.

3. A flange type butterfly valve as claimed in claim 1, characterized in that: The rear sides of the surfaces of the two connection blocks are movably sleeved with a guide rod, and the left and right end surfaces of the guide rod are respectively fixedly connected to the left and right sides of the inner wall of the outer frame near the rear side.

4. A flange type butterfly valve as claimed in claim 1, characterized in that: An insert block is fixedly connected to the middle of the side surface of the valve stem, and a second slot is provided on a side of the locking block close to the valve stem, and the insert block is adapted to the second slot.

5. A flange type butterfly valve as claimed in claim 4, characterized in that: The inserting blocks and the fixing blocks are arranged crosswise, and the number of the inserting blocks and the number of the fixing blocks are both two, and they are arranged in a ring array.

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