Double quick cut-off butterfly valve with manual reset function

Abstract

The utility model provides a dual quick cut-off butterfly valve with a manual reset function. The dual quick cut-off butterfly valve comprises a valve body; the valve clack is arranged in the valve body; one end of the valve rod penetrates through the valve body and is connected with the valve clack, and the valve rod is used for driving the valve clack to be opened or closed; the cut-off mechanism is connected with the valve rod and used for driving the valve rod; the limiting mechanism is arranged in the cut-off mechanism and used for limiting rotation of the valve rod; the cut-off mechanism comprises an electromagnetic coil and an emergency button, is connected with the limiting mechanism and is used for controlling the limiting mechanism to be separated from the cut-off mechanism. The electromagnetic coil is arranged on the butterfly valve, the butterfly valve is rapidly cut off, the performance of the cut-off butterfly valve is improved, meanwhile, the butterfly valve can be remotely controlled to be rapidly cut off and also can be manually rapidly cut off, a product is safer and more stable to use, the sealing performance is more reliable, the service life is longer, and the requirement for market diversification is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of controlling valves, in particular to a double quick cut-off butterfly valve with manual reset. BACKGROUND

[0002] The butterfly valve is widely used in the field of modern manufacturing engineering technology, and the butterfly valve is used to control the flow and pressure of fluid.

[0003] As the butterfly valve technology is increasingly applied to various industrial and civil fields, the performance of the original traditional butterfly valve is continuously improved, and it is urgent to develop new butterfly valve products to meet market requirements. The commonly used butterfly valve often encounters some problems: the valve is not closed in time under normal working pressure, and when the butterfly valve is closed, the resistance is large, and the transmission device is blocked, which cannot meet the diversified market demand. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a double quick cut-off butterfly valve with manual reset, improve the performance of the cut-off butterfly valve, and at the same time, the butterfly valve has remote control quick cut-off function and manual quick cut-off function, the product is safer, more stable, has more reliable sealing performance, has longer service life, and meets the diversified market demand.

[0005] In one aspect of the present application, a double quick cut-off butterfly valve with manual reset is provided, comprising: a valve body;

[0006] a valve disc arranged in the valve body;

[0007] a valve stem penetrating through the valve body and connected with the valve disc at one end, for driving the valve disc to open or close;

[0008] a cut-off mechanism connected with the valve stem for driving the valve stem;

[0009] a limiting mechanism arranged in the cut-off mechanism for limiting the rotation of the valve stem;

[0010] The cut-off mechanism comprises an electromagnetic coil and an emergency button, which are connected with the limiting mechanism for controlling the limiting mechanism to be separated from the cut-off mechanism.

[0011] Further, the cut-off mechanism has a cavity, and the electromagnetic coil, the limiting mechanism and the emergency button are arranged in the cavity.

[0012] Further, the cavity has a protrusion on the inner wall of one end close to the valve disc, and the electromagnetic coil is sleeved on the protrusion and can generate magnetic force when energized.

[0013] A limit check spring is arranged between one end of the emergency button and the protrusion, for resetting after the emergency button is pressed.

[0014] Further, the cutting mechanism further comprises a limit block arranged in the cavity and sleeved on the peripheral wall of the emergency button and movable with the emergency button in the cavity.

[0015] The electromagnetic coil is arranged to move the limit block towards the electromagnetic coil when energized.

[0016] The limit mechanism is arranged on the limit block.

[0017] Further, the cutting mechanism further comprises a handle connected to the other end of the valve rod for controlling rotation of the valve rod.

[0018] A positioning key is arranged in the cavity and arranged on the valve rod.

[0019] A limit block is arranged in the cavity and connected to the positioning key and rotatable with the valve rod in the cavity.

[0020] The limit block is provided with a positioning hole, and one end of the limit mechanism can be inserted into the positioning hole.

[0021] Further, the limit mechanism comprises a limit shaft arranged at one end on the side of the limit block close to the valve rod and arranged at the other end to be inserted into the positioning hole.

[0022] A reset spring is arranged at one end of the limit shaft between the limit shaft and the limit block.

[0023] Further, the cutting mechanism further comprises a bearing sleeved on the valve rod and arranged at the end away from the handle.

[0024] A positioning pin is arranged in the cavity and fixed to the inner wall of the cavity close to the end of the bearing.

[0025] A torsion spring piece is arranged in the cavity and connected to the positioning pin for quickly closing the valve flap when one end of the limit mechanism is separated from the positioning hole.

[0026] Further, the bearing is a DU bearing.

[0027] Further, the valve flap is bolted with the valve rod.

[0028] Compared with the prior art, the present application has at least one of the following beneficial effects:

[0029] This application improves the performance of butterfly valves by incorporating an electromagnetic coil and an emergency stop button, enabling rapid shut-off. The butterfly valve in this application achieves remote-controlled rapid shut-off via a remotely controlled electromagnetic coil and manual rapid shut-off via an emergency stop button. This makes the product safer, more stable, provides more reliable sealing, and has a longer service life, meeting diverse market demands. Attached Figure Description

[0030] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0031] Figure 1a , 1b This is an assembly diagram of a dual quick-shut-off butterfly valve with manual reset according to an embodiment of this application.

[0032] Figure 2a , 2b This is an assembly diagram of a dual quick-shut-off butterfly valve with manual reset, representing another embodiment of this application.

[0033] In the diagram: 1. Valve body; 2. Bolt; 3. Valve disc; 8. Valve stem; 10. Solenoid coil; 11. Limit block; 12. Limit check spring; 13. Torsion spring; 14. Locating pin; 15. Key; 16. Locating block; 17. Emergency button; 18. Limit shaft; 19. Return spring; 20. Handle; 21. DU bearing. Detailed Implementation

[0034] The present application will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These all fall within the protection scope of the present application.

[0035] Reference Figure 1a , 1b As shown, an embodiment of this application discloses a dual quick-shutdown butterfly valve with manual reset, comprising: a valve body 1, a valve disc 3, a valve stem 8, a shut-off mechanism, and a limiting mechanism. The valve disc 3 is disposed within the valve body 1; one end of the valve stem 8 passes through the valve body 1 and is connected to the valve disc 3, used to open or close the valve disc 3; the shut-off mechanism is connected to the valve stem 8, used to drive the valve stem 8; the limiting mechanism is disposed within the shut-off mechanism, used to restrict the rotation of the valve stem 8; the shut-off mechanism includes an electromagnetic coil 10 and an emergency stop button 17, connected to the limiting mechanism, used to control the limiting mechanism to disengage from the shut-off mechanism.

[0036] The application sets the electromagnetic coil 10, in use, the cutting mechanism can drive the valve rod 8 to rotate, the valve rod 8 drives the valve disc 3 to rotate in the valve body 1, the opening and closing of the valve body 1 are realized, the limiting mechanism is used for limiting the rotation range of the valve rod 8, the cutting mechanism is electrically connected or mechanically connected with the limiting mechanism, for when the cutting mechanism is blocked, the limiting mechanism is pulled through the electromagnetic coil 10 or the emergency button 17, the remote control of the limiting mechanism can quickly separate the cutting mechanism to realize the quick cutting of the valve disc 3, the double quick cutting technology is adopted, the cutting speed is faster, more stable, and the service life is longer.

[0037] In some specific embodiments, the cutting mechanism has a cavity (not marked in the figure), the electromagnetic coil 10, the limiting mechanism and the emergency button 17 are arranged in the cavity.

[0038] By setting the cavity in the cutting mechanism, the electromagnetic coil 10, the limiting mechanism and the emergency button 17 are arranged in the cavity, the compactness of the butterfly valve structure is improved.

[0039] In some specific embodiments, the cavity has a protrusion (not marked in the figure) on the inner wall of one end close to the valve disc 3, the electromagnetic coil 10 is arranged on the protrusion, and a magnetic force can be generated when energized; the limiting check spring 12 is arranged between one end of the emergency button 17 and the protrusion, and is used for resetting after the emergency button 17 is pressed.

[0040] Specifically, the cutting mechanism further comprises a limiting block 11, the limiting block 11 is located in the cavity and is arranged on the peripheral wall of the emergency button 17 and is movable in the cavity with the emergency button 17. When the electromagnetic coil 10 is energized, the limiting block 11 can move towards the electromagnetic coil 10; the limiting mechanism is arranged on the limiting block 11.

[0041] In the above embodiments, one of the embodiments is that the protrusion is arranged in the cavity, the electromagnetic coil 10 is arranged on the protrusion, which is used for limiting the position of the electromagnetic coil 10, avoiding the movement of the electromagnetic coil 10 in the cavity, and a magnetic force can be generated when energized, so that the limiting block 11 moves towards the electromagnetic coil 10, drives the limiting mechanism to move, and realizes the quick closing of the valve disc 3.

[0042] Another embodiment is that the limiting block 11 is moved towards the electromagnetic coil 10 by manually pressing the emergency button 17, drives the limiting mechanism to move, and realizes the quick closing of the valve disc 3, and the limiting check spring 12 can reset the emergency button 17.

[0043] In some specific embodiments, the cutting-off mechanism further comprises a handle 20, a positioning key 15 and a positioning block 16, the handle 20 is connected with the other end of the valve rod 8 for controlling the rotation of the valve rod 8, the positioning key 15 is located in the cavity and arranged on the valve rod 8, the positioning block 16 is located in the cavity and connected with the positioning key 15 and rotatable with the valve rod 8 in the cavity, and the positioning block 16 is provided with a positioning hole (not shown in the figure) into which one end of the limiting mechanism can extend.

[0044] Referring to Figure 2a , 2b and Figure 1a , 1b By arranging the positioning hole on the positioning block 16, one end of the limiting mechanism can extend into the positioning hole, in use, the handle 20 is manually rotated to drive the valve rod 8 to rotate, thereby driving the valve disc 3 to rotate and open the valve, in the rotation process, the positioning block 16 rotates with the valve rod 8, the positioning hole rotates with the positioning block 16, so that one end of the limiting mechanism can extend into the positioning hole, and the valve disc 3 is in the fully open state. When rapid cutting-off is needed, the electromagnetic valve is energized or the emergency button 17 is manually pressed to control the limiting mechanism to be separated from the positioning hole, thereby achieving rapid closing of the valve disc 3, and the handle 20 needs to be manually rotated to open the valve after cutting-off.

[0045] In some specific embodiments, the limiting mechanism comprises a limiting shaft 18 and a return spring 19, one end of the limiting shaft 18 is arranged on one side of the limiting block 11 close to the valve rod 8, and the other end of the limiting shaft 18 can extend into the positioning hole, and the return spring 19 is arranged on one end of the limiting shaft 18 and located between the limiting shaft 18 and the limiting block 11.

[0046] Specifically, the state control of the butterfly valve: rotating the handle 20 to make the positioning hole on the positioning block 16 and the limiting shaft 18 be aligned under the pushing force of the return spring 19, so that the valve disc 3 is in the fully open state; pressing the emergency button 17 to make the limiting block 11 move and drive the limiting shaft 18 to be separated from the positioning hole on the positioning block 16, so that the valve disc 3 is quickly reset and in the closed state to cut off the passage, or the electromagnetic coil 10 is energized to generate a magnetic force to make the limiting block 11 move and drive the limiting shaft 18 to be separated from the positioning hole on the positioning block 16, thereby driving the valve rod 8 to quickly reset the valve disc 3 and make the valve disc 3 in the closed state to cut off the passage.

[0047] In some specific embodiments, the cutting-off mechanism further comprises a torsional spring piece 13, a positioning pin 14 and a bearing 21, the bearing 21 is sleeved on the valve rod 8 and arranged at the end away from the handle 20, the positioning pin 14 is located in the cavity and fixed on the inner wall of the cavity close to the bearing 21, and the torsional spring piece 13 is located in the cavity and connected with the positioning pin 14 for quickly closing the valve disc 3 when one end of the limiting mechanism is separated from the positioning hole.

[0048] Referring to Figure 1a ,1b In use, the user rotates the handle 20 to drive the valve stem 8 to rotate the valve disc 3 to open or close the valve body 1, thereby achieving the operation of the butterfly valve. In addition, under normal working pressure, if the butterfly valve cannot be closed in time or cannot be closed due to large resistance, the electromagnetic coil 10 or the emergency button 17 is used to make the limiting mechanism quickly disengage from the positioning hole of the positioning block 16, and the valve disc 3 is quickly reset to the closed state under the action of the torsional spring piece 13, thereby cutting off the channel and improving the performance of the cut-off butterfly valve. The butterfly valve can be remotely controlled and quickly cut off, and can also be manually quickly cut off, thereby improving the safety, stability, sealing performance, and service life of the product, and meeting the diversified needs of the market.

[0049] Specifically, the bearing 21 is a DU bearing 21.

[0050] The valve stem 8 and the valve disc 3 are provided with a high-performance wear-resistant DU bearing 21, which can work without lubrication, has small friction resistance, is wear-resistant, has a long service life, has high mechanical strength, can bear large stable load and dynamic load, has good corrosion resistance, can work in various corrosive media (including liquid and gas), and improves the service life of the cut-off butterfly valve.

[0051] In the present application, the valve disc 3 is connected with the valve stem 8 through the bolt 2.

[0052] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the above specific embodiments, and various modifications or changes can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. The above preferred features can be combined in any manner without conflict.

Claims

1. A double quick-acting butterfly valve with manual reset, characterized in that, The utility model relates to a valve, which comprises: a valve body; a valve disc arranged in the valve body; a valve rod having one end penetrating through the valve body and connected with the valve disc for driving the valve disc to open or close; a cut-off mechanism connected with the valve rod for driving the valve rod; a limiting mechanism arranged in the cut-off mechanism for limiting the rotation of the valve rod; the cut-off mechanism comprises an electromagnetic coil and an emergency button connected with the limiting mechanism for controlling the limiting mechanism to be separated from the cut-off mechanism; the cut-off mechanism has a cavity, and the electromagnetic coil, the limiting mechanism and the emergency button are arranged in the cavity; the cut-off mechanism further comprises: a bearing sleeved on the valve rod and arranged at one end close to the valve disc; a positioning pin arranged in the cavity and fixed on the inner wall of the cavity close to the bearing; a torsional spring piece arranged in the cavity and connected with the positioning pin for quickly closing the valve disc when the one end of the limiting mechanism is separated from the positioning hole.

2. A double quick close butterfly valve with manual reset according to claim 1, characterized in that, the cavity has a protrusion on the inner wall close to the valve disc, and the electromagnetic coil is sleeved on the protrusion and generates magnetic force when energized; a limiting check spring is arranged between one end of the emergency button and the protrusion for resetting after the emergency button is pressed.

3. A double quick close butterfly valve with manual reset according to claim 2, characterized in that, the cut-off mechanism further comprises a limiting block arranged in the cavity and sleeved on the peripheral wall of the emergency button and moving in the cavity along with the emergency button; the electromagnetic coil can move the limiting block towards the electromagnetic coil when energized; the limiting mechanism is arranged on the limiting block.

4. A double quick close butterfly valve with manual reset according to claim 3, characterized in that, the cut-off mechanism further comprises: a handle connected with the other end of the valve rod for controlling the rotation of the valve rod; a positioning key arranged in the cavity and on the valve rod; a positioning block arranged in the cavity and connected with the positioning key and rotating in the cavity along with the valve rod; the positioning block is provided with a positioning hole, and the one end of the limiting mechanism can extend into the positioning hole.

5. A double quick close butterfly valve with manual reset according to claim 4, characterized in that, the limiting mechanism comprises: a limiting shaft having one end arranged on the side of the limiting block close to the valve rod and the other end extending into the positioning hole; a reset spring arranged at one end of the limiting shaft and between the limiting shaft and the limiting block.

6. A double quick close butterfly valve with manual reset according to claim 1, characterized in that, the bearing is a DU bearing.

7. A double quick close butterfly valve with manual reset according to claim 6, characterized in that, the valve disc is bolted with the valve rod.

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