Manual three-eccentric center butterfly valve

Abstract

The utility model discloses a manual three-eccentric center butterfly valve which comprises a valve body, a flow channel is formed in the valve body, a valve plate for controlling the flow channel to be opened and closed is arranged in the flow channel, a valve rod connected with the valve plate is further arranged on the valve body, and an actuator which is located outside and controls the valve plate is arranged on the valve rod. The check valve is characterized in that the valve body is provided with a clamping piece for limiting the actuator, the clamping piece comprises a clamping plate, the clamping plate is connected with the actuator and rotates along with the actuator, the valve body is provided with a limiting plate matched with the clamping plate, the limiting plate is provided with a plurality of clamping half grooves, the clamping plate is provided with limiting half grooves matched with the clamping half grooves, and the limiting half grooves are matched with the clamping half grooves. When the actuator rotates to a starting rotation state or a closing state, the clamping half groove and the limiting half groove are matched to form a locking clamping groove, and a clamping rod locked in the locking clamping groove is arranged on the valve body. The butterfly valve locking device has the following advantages and effects that the butterfly valve is effectively locked, and mistaken opening is prevented.

Description

Technical Field

[0001] The utility model relates to the field of manual three-eccentric butterfly valves, and more specifically, to a manual three-eccentric butterfly valve. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. However, the ordinary butterfly valve switch actuator is always in a free state, without any limit or locking design, which makes the butterfly valve switch handwheel prone to malfunction, resulting in a series of adverse consequences. Therefore, there is an urgent need for a butterfly valve that can solve the above problem and is easy to lock. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a manual three-eccentric butterfly valve which can effectively prevent accidental opening and closing.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manual three-eccentric butterfly valve, including a valve body, a flow channel is opened on the valve body, a valve plate for controlling the opening and closing of the flow channel is arranged in the flow channel, a valve stem connected to the valve plate is also arranged on the valve body, an actuator located outside and controlling the valve plate is arranged on the valve stem, and the characteristic is that a clamping part for limiting the actuator is arranged on the valve body, the clamping part includes a clamping plate, the clamping plate is connected to the actuator and rotates therewith, a limit plate for matching the clamping plate is arranged on the valve body, a plurality of clamping half grooves are arranged on the limit plate, a limit half groove matching therewith is arranged on the clamping plate, when the actuator rotates to the start rotation or closing state, the clamping half groove cooperates with the limit half groove to form a locking groove, and a clamping rod locked in the locking groove is arranged on the valve body.

[0005] By adopting the above technical solution, a locking slot is provided. When the actuator is placed in the open or cut-off state, a locking slot is formed, which cooperates with the clamping rod to lock. At the same time, since four locking slots are provided, the clockwise and counterclockwise rotation of the clamping plate can be limited, which can prevent the butterfly valve from being accidentally touched when locked, causing the butterfly valve to open and close. The structure is simple and easy to use.

[0006] The utility model is further configured as follows: a sliding block is arranged on the clamping rod, the sliding block slides on the clamping rod, a driving groove is formed in the clamping rod, the driving groove is provided with a driving rod, the driving rod slides in the driving groove and can drive the sliding block to separate, and a clamping groove connected to the locking clamping groove is arranged on the valve body.

[0007] By adopting the above technical solution, a clamping block is provided, which can be driven to separate by the driving rod and fixed in the clamping groove to prevent the actuator from moving and limit the separation of the clamping half groove and the limiting half groove.

[0008] The utility model is further configured as follows: the sliding block is fan-shaped, and one end located in the driving groove is provided with a first driving surface, and the driving rod is provided with a driving part matched therewith.

[0009] By adopting the above technical solution, the downward movement of the driving rod can enable the driving part to drive the first driving surface, so that the sliding block moves toward the outside and is fixed in the clamping groove.

[0010] The utility model is further configured as follows: a return spring connected to the driving part is also arranged on the clamping rod, and a second spring connected to the driving rod is also arranged on the clamping rod.

[0011] By adopting the above technical solution, a reset spring is provided, and the spring can drive the sliding block to reset, which is convenient for operation and use.

[0012] The utility model is further configured as follows: a clamping block is provided on the clamping rod, the driving rod is provided with a locking groove matched therewith, the clamping block rotates on the clamping rod, a torsion spring connected to the clamping block is provided on the clamping rod, and a driving end protrudes from one end of the clamping block.

[0013] By adopting the above technical solution, a torsion spring is provided to cooperate with the clamping block, so that the clamping block can be clamped in the locking groove, so that the driving rod can be in a state of driving the sliding block to separate or approach.

[0014] The utility model is further configured as follows: the actuator has an upper sliding limit frame, and both ends of the limit frame are provided with clamping ends that match the clamping rod, and the clamping ends are formed with clamping grooves.

[0015] The utility model is further configured as follows: a clamping portion is provided on the valve body, and a clamping groove matched with the clamping portion is provided on the limiting frame.

[0016] By adopting the above technical solution, a limit frame is provided, and the limit frame slides on the connecting section between the actuator and the clamping plate. When the actuator moves, it can rotate with it without affecting the movement. When limiting, the clamping groove is clamped on the clamping rod to lock the two clamping rods to enhance safety. When moving, the protruding clamping part on the actuator limits the clamping groove of the limit frame and can move with the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the actuator and the valve in the embodiment of the utility model;

[0019] Figure 3 A three-dimensional diagram of a limit-removing frame according to an embodiment of the utility model;

[0020] Figure 4 A three-dimensional diagram of an actuator of an embodiment of the utility model;

[0021] Figure 5 It is an exploded view of the clamping rod of the embodiment of the utility model.

[0022] In the figure: 1. valve body; 12. valve plate; 2. actuator; 22. clamping plate; 23. limit plate; 24. clamping half groove; 25. limit half groove; 3. clamping rod; 31. sliding block; 4. driving rod; 41. clamping groove; 5. first driving surface; 51. driving part; 6. clamping block; 62. driving end; 7. limit frame; 73. clamping end. DETAILED DESCRIPTION

[0023] Reference Figures 1 to 5 The utility model is further described in detail.

[0024] A manual three-eccentric butterfly valve comprises a valve body 1, a flow channel is provided on the valve body 1, a valve plate 12 for controlling the opening and closing of the flow channel is arranged in the flow channel, a valve stem connected to the valve plate 12 is also arranged on the valve body 1, an actuator 2 located outside and controlling the valve plate 12 is arranged on the valve stem, and the valve body 1 is characterized in that: a clamping part for limiting the actuator 2 is arranged on the valve body 1, the clamping part comprises a clamping plate 22, the clamping plate 22 is connected to the actuator 2 and rotates therewith, a limiting plate 23 for matching the clamping plate 22 is arranged on the valve body 1, a plurality of clamping half grooves 24 are arranged on the limiting plate 23, a limiting half groove 25 matching therewith is arranged on the clamping plate 22, when the actuator 2 rotates to the start rotation or closed state, the clamping half groove 24 cooperates with the limiting half groove 25 to form a locking groove, and a clamping rod 3 locked in the locking groove is arranged on the valve body 1.

[0025] A sliding block 31 is provided on the clamping rod 3, and the sliding block 31 slides on the clamping rod 3. A driving groove is formed in the clamping rod 3, and a driving rod 4 is provided in the driving groove. The driving rod 4 slides in the driving groove and can drive the sliding block 31 to separate. A clamping groove 41 connected to the locking clamping groove is provided on the valve body 1.

[0026] The shift block 31 is fan-shaped, and one end located in the driving groove is provided with a first driving surface 5 , and the driving rod 4 is provided with a driving portion 51 that cooperates therewith.

[0027] The clamping rod 3 is also provided with a return spring connected to the sliding block 31 , and the clamping rod 3 is also provided with a second spring connected to the driving rod 4 .

[0028] The clamping rod 3 is provided with a clamping block 6, and the driving rod 4 is provided with a locking groove matched therewith. The clamping block 6 rotates on the clamping rod 3, and the clamping rod 3 is provided with a torsion spring connected to the clamping block 6. A driving end 62 protrudes from one end of the clamping block 6.

[0029] The actuator 2 is provided with a sliding limit frame 7 , and both ends of the limit frame 7 are provided with clamping ends 73 matching the clamping rod 3 , and the clamping ends 73 are formed with clamping grooves 41 .

[0030] The valve body 1 is provided with a clamping part, and the limiting frame 7 is provided with a clamping groove matched therewith. The clamping part includes a structure such as a rope to fix the limiting frame.

[0031] A locking slot is provided. When the actuator 2 is placed in the open or cut-off state, a locking slot is formed to cooperate with the clamping rod 3 to lock. At the same time, since four locking slots are provided, the clamping plate 22 can be limited to rotate clockwise and counterclockwise, which can prevent the butterfly valve from being opened and closed due to accidental touch when the butterfly valve is locked. The structure is simple and convenient to use. A clamping block 6 is provided, which can be driven to separate by the driving rod 4 and fixed in the clamping slot 41 to prevent the actuator 2 from moving and limit the separation of the clamping half slot 24 and the limiting half slot 25. A torsion spring is provided to cooperate with the clamping block 6, so that the clamping block 6 can be clamped in the locking slot, so that the driving rod 4 can be in a state of driving the sliding block 31 to separate or approach. A limit frame 7 is provided, and the limit frame 7 slides on the connection section between the actuator 2 and the clamping plate 22. When the actuator 2 moves, it can rotate with it without affecting the movement. When limiting, the clamping groove 41 is clamped on the clamping rod 3 to lock the two clamping rods 3 to enhance safety. When moving, the protruding clamping part on the actuator 2 limits the clamping groove of the limit frame 7 and can move with the actuator 2.

[0032] Instructions for use: When the actuator 2 is rotated to the locked or started state, the engaging rod 3 is engaged in the locking slot, and the engaging block 6 is driven by the driving end 62 to open it, and then the driving rod 4 is pressed to drive the sliding block 31 to slide in the engaging slot 41, and then the lower limit frame 7 is moved so that the engaging slot 41 is engaged with the engaging rod 3 to lock the two engaging rods 3, and the engaging block 6 is engaged in the locking slot; when releasing, the engaging block 6 is disengaged from the locking slot, and the spring drives the reset, and the engaging rod 3 and the limiting frame 7 are taken away; the limiting frame 7 is slidably fixed on the actuator and rotates with it.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A manual three-eccentric butterfly valve, comprising a valve body, a flow channel is provided on the valve body, a valve plate for controlling the opening and closing of the flow channel is provided in the flow channel, a valve stem connected to the valve plate is provided on the valve body, an actuator located outside and controlling the valve plate is provided on the valve stem, and the characteristics are: The valve body is provided with a clamping part that limits the actuator, and the clamping part includes a clamping plate, which is connected to the actuator and rotates therewith, and the valve body is provided with a limit plate that cooperates with the clamping plate, and the limit plate is provided with a plurality of clamping half-grooves, and the clamping plate is provided with a matching limit half-groove. When the actuator rotates to the start rotation or closed state, the clamping half-groove cooperates with the limit half-groove to form a locking clamping groove, and the valve body is provided with a clamping rod that is locked in the locking clamping groove.

2. The manual triple-eccentric butterfly valve according to claim 1 is characterized in that: A sliding block is arranged on the clamping rod, and the sliding block slides on the clamping rod. A driving groove is formed in the clamping rod, and the driving groove is provided with a driving rod. The driving rod slides in the driving groove and can drive the sliding block to separate. A clamping groove connected with the locking clamping groove is arranged on the valve body.

3. The manual triple-eccentric butterfly valve according to claim 2 is characterized in that: The sliding block is fan-shaped, and one end located in the driving groove is provided with a first driving surface, and the driving rod is provided with a driving part matched with the first driving surface.

4. The manual triple-eccentric butterfly valve according to claim 3 is characterized in that: The clamping rod is also provided with a return spring connected to the sliding block, and the clamping rod is also provided with a second spring connected to the driving rod.

5. The manual triple-eccentric butterfly valve according to claim 4 is characterized in that: The clamping rod is provided with a clamping block, the driving rod is provided with a locking groove matched therewith, the clamping block rotates on the clamping rod, the clamping rod is provided with a torsion spring connected to the clamping block, and one end of the clamping block protrudes with a driving end.

6. The manual triple-eccentric butterfly valve according to claim 1 is characterized in that: The actuator is provided with a sliding limit frame, and both ends of the limit frame are provided with clamping ends matching the clamping rod, and the clamping ends are formed with clamping grooves.

7. The manual triple-eccentric butterfly valve according to claim 6 is characterized in that: The valve body is provided with a clamping portion, and the limiting frame is provided with a clamping groove matched with the clamping portion.

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