Pneumatic type alloy butterfly valve locking structure

Abstract

The utility model belongs to the technical field of butterfly valves, and particularly relates to a pneumatic type alloy butterfly valve locking structure which comprises a valve body, a pneumatic shell is arranged at the top of the valve body, a valve rod is rotationally connected into the valve body and penetrates through the pneumatic shell, the top of the pneumatic shell is in contact with an installation shell, a locking mechanism is arranged on the inner side of the installation shell, and the locking mechanism is connected with the valve rod. A positioning block is fixedly connected to the bottom of the mounting shell and connected with the pneumatic shell in a clamped mode. The mounting shell is mounted at the upper end of the pneumatic shell of the valve body, the locking mechanism is arranged on the inner side of the mounting shell, and after the valve rod drives the valve clack to rotate in place, a micro motor in the locking mechanism drives the rotating disc to rotate, so that the two sliding rods move in opposite directions, a locking pin is inserted into the valve rod, and the valve clack is locked. In this way, the valve rod can be locked, the valve clack is further locked, and it is prevented that the valve clack is subjected to continuous thrust of a medium to rotate, and consequently valve leakage is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a pneumatic alloy butterfly valve locking structure. Background Art

[0002] A pneumatic alloy butterfly valve is a valve that uses a pneumatic device to control the opening and closing of the valve. It consists of a valve body, a valve disc, a valve stem, a pneumatic device, etc. The pneumatic device realizes the opening and closing control of the valve by controlling the pressure of the air source. For example, the invention patent with the announcement number CN116045008A discloses a pneumatic butterfly valve, including a valve body, a valve plate, a valve body shaft and an actuator housing. A valve plate is arranged on the inner side of the valve body, and a valve body shaft is connected to the plate surface of the valve plate. The upper end of the valve body shaft extends to the bottom of the actuator housing. A gear shaft is arranged inside the actuator housing. A gear shaft hole is provided at the bottom of the actuator housing, and a rectangular through groove is provided on the lower end surface of the actuator housing, and the rectangular through groove is connected to the gear shaft hole.

[0003] However, after the existing butterfly valve is closed, the valve disc will continue to be pushed by the medium and easily loosen, thereby causing the valve to leak and affecting its use. Therefore, improvement is needed. Utility Model Content

[0004] The utility model aims to provide a pneumatic alloy butterfly valve locking structure, which solves the problem that after the existing butterfly valve is closed, the valve disc will continue to be pushed by the medium and easily loosen, thereby causing valve leakage and affecting use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic alloy butterfly valve locking structure, comprising a valve body, a pneumatic shell is arranged on the top of the valve body, a valve stem is rotatably connected inside the valve body, and the valve stem passes through the pneumatic shell, the top of the pneumatic shell contacts with a mounting shell, a locking mechanism is arranged on the inner side of the mounting shell, a positioning block is fixedly connected to the bottom of the mounting shell, the positioning block is clamped with the pneumatic shell, a latch is slidably connected inside the pneumatic shell, the latch is plugged with the positioning block, a spring is arranged inside the pneumatic shell, and a threading hole is opened on the top of the mounting shell.

[0006] Preferably, one end of the spring 1 is fixedly connected to the latch, and the other end of the spring 1 is fixedly connected to the inner surface of the pneumatic housing. By setting the spring 1, the elastic force can be applied to the latch.

[0007] Preferably, a push rod is slidably connected inside the pneumatic shell and above the latch, a button is fixedly connected to the top of the push rod, a bellows is fixedly connected to the bottom edge of the button, and the bottom of the bellows is fixedly connected to the pneumatic shell. The push rod can interact with the latch and cause it to move laterally.

[0008] Preferably, the locking mechanism includes a micro motor, the micro motor is fixedly mounted on the inner top of the mounting shell, the output shaft end of the micro motor is fixedly connected to a rotating disk, the inner wall of the mounting shell is fixedly connected to a guide sleeve, the inside of the guide sleeve is slidably connected to a locking pin, and the arc end of the locking pin is plugged into the valve stem, the inside of the guide sleeve is provided with a second spring, the pin body end of the locking pin is fixedly connected to a sliding rod, the sliding rod passes through the guide sleeve and the rotating disk and is slidably connected to both the guide sleeve and the rotating disk. By setting the locking mechanism, the valve stem can be locked after it is in place.

[0009] Preferably, one end of the second spring is fixedly connected to the locking pin, and the other end of the second spring is fixedly connected to the inner surface of the guide sleeve. By setting the second spring, elastic force can be applied to the locking pin.

[0010] Preferably, a ball bearing is arranged inside the side of the rotating disk, and the ball bearing is slidably connected to the inner surface of the mounting shell. The arrangement of the ball bearing can reduce the friction between the rotating disk and the mounting shell.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model installs a mounting shell on the upper end of the pneumatic shell of the valve body, and a locking mechanism is arranged on the inner side of the mounting shell. When the valve stem drives the valve disc to rotate into place, the micro motor in the locking mechanism drives the rotating disk to rotate, so that the two slide bars move toward each other and the locking pin is inserted into the valve stem, so that the valve stem can be locked, and the valve disc can be further locked to prevent the valve disc from rotating due to the continuous thrust of the medium and causing valve leakage.

[0013] 2. The utility model provides a positioning block at the bottom edge of the mounting shell, and the positioning block is inserted into the pneumatic shell. In addition, a latch elastically supported by a spring is provided inside the pneumatic shell, and the latch is inserted into the positioning block under the action of the spring. In this way, the mounting shell and the locking mechanism can be installed and removed on the butterfly valve by controlling the clutch of the latch and the positioning block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A partial front cross-sectional view of

[0016] Figure 3 For the utility model Figure 2 A magnified view of the structure of part A;

[0017] Figure 4 For the utility model Figure 2 An enlarged view of the locking mechanism;

[0018] Figure 5 For the utility model Figure 3 A three-dimensional diagram of the latch structure;

[0019] Figure 6 For the utility model Figure 4 A three-dimensional diagram of the rotating disk structure.

[0020] In the figure: 1. valve body; 2. pneumatic shell; 3. valve stem; 4. mounting shell; 5. locking mechanism; 6. threading hole; 7. positioning block; 8. latch; 9. spring 1; 10. push rod; 11. button; 12. bellows; 51. micro motor; 52. rotating disk; 53. ball bearing; 54. guide sleeve; 55. locking pin; 56. spring 2; 57. slide rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 A pneumatic alloy butterfly valve locking structure includes a valve body 1, a pneumatic shell 2 is arranged on the top of the valve body 1, a valve stem 3 is rotatably connected inside the valve body 1, and the valve stem 3 penetrates the pneumatic shell 2, the top of the pneumatic shell 2 contacts the mounting shell 4, the bottom of the mounting shell 4 is fixedly connected with a positioning block 7, the positioning block 7 is clamped with the pneumatic shell 2, the inside of the pneumatic shell 2 is slidably connected with a latch 8, the latch 8 is plugged with the positioning block 7, a spring 9 is arranged inside the pneumatic shell 2, one end of the spring 9 is fixedly connected with the latch 8, and the other end of the spring 9 is fixedly connected to the inner surface of the pneumatic shell 2. Through the arrangement of the spring 9, the elastic force can be applied to the latch 8, and a threading hole 6 is opened on the top of the mounting shell 4.

[0023] See also Figure 3 A push rod 10 is slidably connected inside the pneumatic housing 2 and above the latch 8, a button 11 is fixedly connected to the top of the push rod 10, a bellows 12 is fixedly connected to the bottom edge of the button 11, and the bottom of the bellows 12 is fixedly connected to the pneumatic housing 2. The push rod 10 can interact with the latch 8 and cause it to move laterally.

[0024] See also Figure 2 , Figure 4 , Figure 6The inner side of the mounting shell 4 is provided with a locking mechanism 5. Through the setting of the locking mechanism 5, the valve stem 3 can be locked after being in place. The locking mechanism 5 includes a micro motor 51. The micro motor 51 is fixedly mounted on the inner top of the mounting shell 4. The end of the output shaft of the micro motor 51 is fixedly connected with a rotating disk 52. The inner wall of the mounting shell 4 is fixedly connected with a guide sleeve 54. The inner part of the guide sleeve 54 is slidably connected with a locking pin 55, and the arc end of the locking pin 55 is plugged with the valve stem 3. The inner part of the guide sleeve 54 is provided with a spring 2 56. The pin body end of the locking pin 55 is fixedly connected with a sliding rod 57. The sliding rod 57 penetrates the guide sleeve 54 and the rotating disk 52 and is slidably connected with the guide sleeve 54 and the rotating disk 52. One end of the spring 2 56 is fixedly connected with the locking pin 55, and the other end of the spring 2 56 is fixedly connected with the inner surface of the guide sleeve 54. Through the setting of the spring 2 56, the elastic force can be applied to the locking pin 55. A ball bearing 53 is disposed inside the side of the rotating disk 52, and the ball bearing 53 is slidably connected to the inner surface of the mounting shell 4. By disposing the ball bearing 53, the friction between the rotating disk 52 and the mounting shell 4 can be reduced.

[0025] The specific implementation process of the utility model is as follows: when in use, first press the push rod 10 downward through the button 11, and the push rod 10 is then inserted into the latch 8, and then the two interact with each other to make the latch 8 move horizontally and compress the spring 9, and then place the mounting shell 4 on the top of the pneumatic shell 2, and the positioning block 7 at the bottom of the mounting shell 4 is inserted into the pneumatic shell 2, and then release the button 11, the latch 8 is reset and inserted into the positioning block 7 under the elastic force of the spring 9, so that the installation shell 4 and its internal locking mechanism 5 on the butterfly valve are installed. When the valve stem 3 and the valve disc are rotated into place, the micro motor 51 drives the rotating disk 52 to rotate, so that the two sliding rods 57 move toward each other, and the locking pin 55 is inserted into the valve stem 3, so that the valve stem 3 can be locked, and the valve disc can be further locked to prevent the valve disc from rotating due to the continuous thrust of the medium, causing the valve to leak.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic alloy butterfly valve locking structure, comprising a valve body (1), characterized in that: A pneumatic shell (2) is arranged on the top of the valve body (1), a valve stem (3) is rotatably connected inside the valve body (1), and the valve stem (3) passes through the pneumatic shell (2), the top of the pneumatic shell (2) contacts with a mounting shell (4), a locking mechanism (5) is arranged on the inner side of the mounting shell (4), a positioning block (7) is fixedly connected to the bottom of the mounting shell (4), the positioning block (7) is snap-fitted with the pneumatic shell (2), a latch (8) is slidably connected inside the pneumatic shell (2), the latch (8) is plugged into the positioning block (7), a spring (9) is arranged inside the pneumatic shell (2), and a threading hole (6) is opened on the top of the mounting shell (4).

2. The pneumatic alloy butterfly valve locking structure according to claim 1 is characterized in that: One end of the spring one (9) is fixedly connected to the latch (8), and the other end of the spring one (9) is fixedly connected to the inner surface of the pneumatic housing (2).

3. The pneumatic alloy butterfly valve locking structure according to claim 1 is characterized in that: A push rod (10) is slidably connected inside the pneumatic housing (2) and above the latch (8); a button (11) is fixedly connected to the top of the push rod (10); a bellows (12) is fixedly connected to the bottom edge of the button (11); and the bottom of the bellows (12) is fixedly connected to the pneumatic housing (2).

4. The pneumatic alloy butterfly valve locking structure according to claim 1 is characterized in that: The locking mechanism (5) comprises a micro motor (51), the micro motor (51) is fixedly mounted on the inner top of the mounting shell (4), the end of the output shaft of the micro motor (51) is fixedly connected to a rotating disk (52), the inner wall of the mounting shell (4) is fixedly connected to a guide sleeve (54), the interior of the guide sleeve (54) is slidably connected to a locking pin (55), and the arc end of the locking pin (55) is plugged into the valve stem (3), the interior of the guide sleeve (54) is provided with a spring 2 (56), the pin end of the locking pin (55) is fixedly connected to a sliding rod (57), and the sliding rod (57) passes through the guide sleeve (54) and the rotating disk (52) and is slidably connected to both the guide sleeve (54) and the rotating disk (52).

5. The pneumatic alloy butterfly valve locking structure according to claim 4 is characterized in that: One end of the second spring (56) is fixedly connected to the locking pin (55), and the other end of the second spring (56) is fixedly connected to the inner surface of the guide sleeve (54).

6. The pneumatic alloy butterfly valve locking structure according to claim 4 is characterized in that: A ball bearing (53) is arranged inside the side edge of the rotating disk (52), and the ball bearing (53) is slidably connected to the inner surface of the mounting shell (4).

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