Butterfly valve with closed self-locking structure

Abstract

The utility model relates to the field of mechanical engineering, in particular to a butterfly valve with a closed self-locking structure. The butterfly valve with the closed self-locking structure comprises a valve body, a valve plate, a mounting box, a rotating ring, a first bevel gear, a second bevel gear and the like, the valve plate is rotatably connected to the middle of the interior of the valve body, the mounting box is fixedly connected to the top of the valve body, the rotating ring is rotatably connected to the front side of the mounting box, and the first bevel gear is fixedly connected to the rotating ring. A first bevel gear is rotationally connected to the front side in the mounting box and connected with the rotating ring, a second bevel gear is rotationally connected to the upper side in the mounting box, and the second bevel gear is meshed with the first bevel gear. A user is allowed to easily lock the butterfly valve at any opening degree through a closed self-locking mechanism, the use flexibility and safety are improved, then a bevel gear combination is adopted as a transmission mode, the complexity of equipment is reduced, and the operation efficiency and reliability are also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a butterfly valve especially a butterfly valve with closed self -locking structure. BACKGROUND

[0002] The butterfly valve is a kind of valve that controls fluid flow by rotating circular butterfly plate, and is widely used in various industrial pipeline systems due to its simple structure, small size, light weight and convenient operation.

[0003] But the traditional butterfly valve is usually less than 90 ° in the process of full opening to full closing, and since butterfly plate and valve rod itself have no self-locking ability, additional worm reducer and other devices are needed to ensure that butterfly plate stops and keeps stable at any position, however, this design increases the complexity of equipment, and may also affect the operation efficiency and reliability of butterfly valve.

[0004] Therefore, it is necessary to design a butterfly valve with closed self-locking structure. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings of the existing butterfly valve inside being relatively complex and affecting the operation efficiency and reliability of butterfly valve, the technical problem of the utility model is to provide a butterfly valve with closed self-locking structure.

[0006] A butterfly valve with closed self-locking structure, comprising a valve body and a valve plate, the valve plate is rotatably connected in the middle part of the valve body, further comprising a mounting box, a rotating ring, a first bevel gear, a second bevel gear, a third bevel gear, a fixed box, a rotating disc, a lifting plate, a clamping column and a first elastic piece, the mounting box is fixedly connected to the top of the valve body, the rotating ring is rotatably connected to the front side of the mounting box, the first bevel gear is rotatably connected to the inside front side of the mounting box, the first bevel gear is connected with the rotating ring, the second bevel gear is rotatably connected to the inside upper side of the mounting box, the second bevel gear is meshed with the first bevel gear, and the second bevel gear is connected with the rotating shaft of the valve plate inside the valve body, the third bevel gear is rotatably connected to the left side of the upper part of the mounting box, the third bevel gear is meshed with the second bevel gear, the fixed box is installed on the left side of the top of the mounting box, the rotating disc is rotatably connected in the fixed box, the rotating disc is connected with the third bevel gear below, and a plurality of clamping holes are formed on the rotating disc in the circumferential direction, the lifting plate is slidably connected and inserted in the right side of the inside of the fixed box, the clamping column is fixedly connected to the middle part of the lifting plate, the clamping column is slidably connected and inserted with the fixed box, and the clamping column is clamped and matched with the clamping hole on the rotating disc, the first elastic piece is connected between the lifting plate and the fixed box, and the first elastic piece surrounds the clamping column.

[0007] Further illustrate, still include have ratchet wheel, pawl, fixed rod and elastic sheet, the upper part of valve plate is fixed with ratchet wheel, ratchet wheel is located in the inside of installation box and also is located in the just below second bevel gear, the bottom right side of installation box is rotatably connected with pawl, and pawl is engaged with ratchet wheel, the bottom right side of installation box is fixed with fixed rod and elastic sheet, wherein, fixed rod is located in the left rear position of pawl, and is attached with pawl, and elastic sheet is located in the right front position of pawl, and is attached with pawl.

[0008] Further illustrate, still include have connecting ring, filter screen, pull rod, scraper, second elastic member, storage box, baffle and threaded rod, the left side of valve body is sleeved with connecting ring, the inside of connecting ring is equipped with filter screen, the upper part of connecting ring is slidably inserted with pull rod, the bottom of pull rod is fixed with scraper, the surface of scraper and filter screen is mutually attached, and scraper is slidably connected with connecting ring, second elastic member is connected between the front and back of scraper and connecting ring, the lower part of connecting ring is installed with storage box, the inside of storage box is connected with the inside of connecting ring, the lower part of storage box is rotatably connected with baffle, and the front side of threaded rod is screw-connected between the front side of storage box and baffle.

[0009] Further illustrate, still include have sealing ring, and the upper part of valve plate is circumferentially provided with sealing ring.

[0010] Further illustrate, still include have handle, and the top of pull rod is fixed with handle.

[0011] Further illustrate, still include have anti-skid layer on the upper part of rotating ring.

[0012] The utility model discloses a beneficial effect is: 1, the utility model discloses a closing self -locking mechanism allows user to lock butterfly valve at any opening degree easily, increase the flexibility and safety of use, then adopt bevel gear combination as transmission mode, reduce the complexity of equipment, also promote operating efficiency and reliability.

[0013] 2, the utility model discloses the design of filter screen plus the matched cleaning tool, make maintenance work more convenient and fast, prolong the service life of butterfly valve. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0015] Figure 2 It is the three-dimensional structure schematic diagram of valve plate, sealing ring and installation box of the utility model and the like.

[0016] Figure 3 It is the three-dimensional structure schematic diagram of pawl, fixed rod and elastic sheet of the utility model and the like.

[0017] Figure 4 It is the three-dimensional structure schematic diagram of rotating disc, lifting plate and clamping column of the utility model and the like.

[0018] Figure 5 It is a three-dimensional structure schematic view of the components such as the pull rod, the handle and the scraper plate of the utility model.

[0019] Figure 6 It is a three-dimensional structure schematic view of the components such as the storage box, the baffle and the threaded rod of the utility model.

[0020] Markings in the drawings: 1: valve body, 2: valve plate, 301: sealing ring, 3: mounting box, 101: rotating ring, 4: ratchet wheel, 5: pawl, 6: fixed rod, 7: elastic sheet, 8: first bevel gear, 9: second bevel gear, 10: third bevel gear, 11: fixed box, 12: rotating disc, 13: lifting plate, 14: clamping column, 15: first elastic member, 103: connecting ring, 16: filter screen, 17: pull rod, 102: handle, 18: scraper plate, 19: second elastic member, 20: storage box, 21: baffle, 22: threaded rod. DETAILED DESCRIPTION

[0021] The utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the utility model are shown. This utility model may, however, be carried out in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the utility model to the skilled person.

[0022] Embodiment: a butterfly valve with closed self-locking structure, like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, including the valve body 1 and valve plate 2, valve body 1 in the middle of the rotatingly connected with valve plate 2, also including the installation box 3, the ring 101, the first bevel gear 8, the second bevel gear 9, the third bevel gear 10, fixed box 11, the rotating disc 12, the plate 13, the column 14 and the first elastic piece 15, the valve body 1 top welding installation box 3, installation box 3 front rotatingly connected with the ring 101, the ring 101 is coated with an anti-skid layer, the anti-skid layer can increase the friction of the ring 101 surface, so as to provide better grip performance and operating stability, the installation box 3 inside the front rotatingly connected with the first bevel gear 8, the first bevel gear 8 and the ring 101 are connected, the installation box 3 inside the upper rotatingly connected with the second bevel gear 9, the second bevel gear 9 and the first bevel gear 8 are engaged with each other, and the second bevel gear 9 is connected with the rotating shaft of the valve plate 2 inside the valve body 1, the installation box 3 inner upper left rotatingly connected with the third bevel gear 10, the third bevel gear 10 and the second bevel gear 9 are engaged with each other, the installation box 3 top left side is provided with fixed box 11, the fixed box 11 inside rotatingly connected with the rotating disc 12, the rotating disc 12 and the lower third bevel gear 10 are connected with each other, and the rotating disc 12 is provided with a plurality of clamping holes along the circumference, the fixed box 11 inside the right side is slidingly connected with the plate 13, the plate 13 is fixedly connected with the column 14, the column 14 and the fixed box 11 are slidingly connected, and the column 14 is connected with the clamping hole on the rotating disc 12, the plate 13 and the fixed box 11 are connected with the first elastic piece 15, and the first elastic piece 15 is around the column 14.

[0023] As shown, Figure 3 It also includes a ratchet wheel 4, pawl 5, fixed rod 6 and elastic sheet 7, the upper part of the valve plate 2 is fixedly connected with the ratchet wheel 4, the ratchet wheel 4 is located in the installation box 3 and also located below the second bevel gear 9, the bottom right side of the installation box 3 is rotatingly connected with the pawl 5, the pawl 5 is engaged with the ratchet wheel 4, the bottom right side of the installation box 3 is fixedly connected with the fixed rod 6 and the elastic sheet 7, wherein the fixed rod 6 is located at the left rear of the pawl 5, and is attached to the pawl 5, and the elastic sheet 7 is located at the right front of the pawl 5, and is attached to the pawl 5.

[0024] As shown, Figure 1 , Figure 5 and Figure 6As shown, it also includes a connecting ring 103, a filter screen 16, a pull rod 17, a scraper 18, a second elastic member 19, a storage box 20, a baffle 21 and a threaded rod 22, the valve body 1 is sleeved with the connecting ring 103 on the left side, the connecting ring 103 is internally provided with the filter screen 16, the connecting ring 103 is slidably inserted with the pull rod 17 on the upper portion, the pull rod 17 is fixedly connected with the scraper 18 on the bottom, the scraper 18 is mutually attached to the surface of the filter screen 16, and the scraper 18 is slidably connected with the connecting ring 103, the second elastic member 19 is connected between the scraper 18 and the connecting ring 103 on the front and back sides, the connecting ring 103 is installed with the storage box 20 on the lower portion, the storage box 20 is internally communicated with the connecting ring 103, the storage box 20 is rotatably connected with the baffle 21 on the lower portion, and the threaded rod 22 is threadedly connected between the front side of the storage box 20 and the front side of the baffle 21.

[0025] As shown in Figure 1 and Figure 5 It also includes a sealing ring 301 and a handle 102, the valve plate 2 is circumferentially provided with the sealing ring 301, and the pull rod 17 is fixedly connected with the handle 102 on the top.

[0026] When the device needs to be used, first, the clamping column 14 is lifted by the lifting plate 13, the first elastic member 15 is compressed, the clamping column 14 is separated from the clamping hole on the rotating disc 12, and then the rotating ring 101 is counterclockwise rotated to drive the first bevel gear 8 to rotate, thereby driving the second bevel gear 9 and the valve plate 2 connected therewith to rotate to open the valve plate 2, then the operator can control the flow of fluid by the angle of rotation, since the bevel gear transmission mode is adopted, the overall device volume is reduced, and the transmission efficiency is improved, after the flow is controlled, the butterfly valve needs to be self-locked, the operator only needs to re-align the clamping hole on the rotating disc 12 with the clamping column 14 in the middle of the lifting plate 13, and loosen the lifting plate 13, so that the clamping column 14 is re-clamped into the clamping hole, this design ensures that the butterfly valve can be stably maintained at multiple opening degrees without additional power source or complex mechanism, it should be noted that due to the existence of the ratchet wheel 4 and the pawl 5 mechanism, the valve plate 2 can only be opened and closed in the clockwise direction, since the butterfly valve is relative, the flow controlled by the opening degree of the clockwise rotation and the counterclockwise rotation is the same, and the limitation of the counterclockwise rotation can prevent the valve plate 2 from being easily displaced due to fluid impact under high pressure, thereby causing leakage.

[0027] When the filter screen 16 needs to be cleaned, the worker pulls the handle 102 up and down to make the scraper 18 slide along the surface of the filter screen 16 to remove the attached objects, the second elastic members 19 on the front and back sides are compressed, and the storage box 20 is used to collect the attached objects scraped off from the surface of the filter screen 16, then the operator can rotate and unscrew the threaded rod 22, and rotate and open the baffle 21, and then the impurities in the storage box 20 can be cleaned, which is convenient for regular maintenance.

[0028] The above embodiments are provided for those skilled in the art to implement or use the present application, and those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present application, and therefore the protection scope of the present application is not limited by the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A butterfly valve with closed self-locking structure, comprising a valve body (1) and a valve plate (2), the valve plate (2) being rotatably connected to the valve body (1) in the middle part, characterized in that: The installation box (3), the rotary ring (101), the first bevel gear (8), the second bevel gear (9), the third bevel gear (10), the fixed box (11), the rotating disc (12), the lifting plate (13), the clamping column (14) and the first elastic member (15) are further included, the valve body (1) top is fixedly connected with the installation box (3), the installation box (3) front side is rotatably connected with the rotary ring (101), the installation box (3) inside front side is rotatably connected with the first bevel gear (8), the first bevel gear (8) is connected with the rotary ring (101), the installation box (3) inside upper side is rotatably connected with the second bevel gear (9), the second bevel gear (9) is meshed with the first bevel gear (8), and the second bevel gear (9) is connected with the rotating shaft of the valve plate (2) inside the valve body (1), the installation box (3) inside upper left side is rotatably connected with the third bevel gear (10), the third bevel gear (10) is meshed with the second bevel gear (9), the installation box (3) top left side is provided with the fixed box (11), the fixed box (11) inside is rotatably connected with the rotating disc (12), the rotating disc (12) is connected with the third bevel gear (10) below, and a plurality of clamping holes are formed in the rotating disc (12) in the circumferential direction, the lifting plate (13) is slidably connected in the fixed box (11) right side, the clamping column (14) is fixedly connected in the lifting plate (13) middle, the clamping column (14) is slidably connected with the fixed box (11), and the clamping column (14) is clamped and matched with the clamping hole in the rotating disc (12), the first elastic member (15) is connected between the lifting plate (13) and the fixed box (11), and the first elastic member (15) surrounds the clamping column (14).

2. The butterfly valve with a closed self-locking structure according to claim 1, characterized in that: The ratchet wheel (4), the pawl (5), the fixed rod (6) and the elastic sheet (7) are further included, the valve plate (2) upper portion is fixedly connected with the ratchet wheel (4), the ratchet wheel (4) is located in the installation box (3) and also below the second bevel gear (9), the pawl (5) is rotatably connected with the installation box (3) bottom right side, and the pawl (5) is engaged with the ratchet wheel (4), the fixed rod (6) and the elastic sheet (7) are fixedly connected with the installation box (3) bottom right side, wherein the fixed rod (6) is located at the left rear position of the pawl (5) and is attached to the pawl (5), and the elastic sheet (7) is located at the right front position of the pawl (5) and is attached to the pawl (5).

3. The butterfly valve with a closed self-locking structure according to claim 2, characterized in that: It also includes connecting ring (103), filter screen (16), pull rod (17), scraper (18), second elastic member (19), storage box (20), baffle (21) and threaded rod (22), the left side of valve body (1) is sleeved with connecting ring (103), the inside of connecting ring (103) is provided with filter screen (16), the upper part of connecting ring (103) is slidably inserted with pull rod (17), the bottom of pull rod (17) is fixedly connected with scraper (18), scraper (18) and filter screen (16) surface are mutually attached, and scraper (18) and connecting ring (103) are slidably connected, second elastic member (19) is connected between scraper (18) and connecting ring (103) on both sides, the lower part of connecting ring (103) is provided with storage box (20), the inside of storage box (20) is communicated with the inside of connecting ring (103), the lower part of storage box (20) is rotatably connected with baffle (21), threaded rod (22) is threadedly connected between the front side of storage box (20) and the front side of baffle (21).

4. The butterfly valve with a closed self-locking structure according to claim 3, characterized in that: It also includes sealing ring (301), and the valve plate (2) is provided with sealing ring (301) circumferentially.

5. The butterfly valve with a closed self-locking structure according to claim 4, characterized in that: It also includes handle (102), and the top of pull rod (17) is fixedly connected with handle (102).

6. The butterfly valve with a closed self-locking structure according to claim 5, characterized in that: The upper part of rotating ring (101) is coated with an anti-skid layer.

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