CN210318539U

CN210318539U - Straight stroke opening and closing butterfly valve

Info

Publication number: CN210318539U
Application number: CN201921248756.2U
Authority: CN
Inventors: 朱国财; 朱培贤; 朱培兴; 朱培斌
Original assignee: Baoding Valve Industry Co ltd
Current assignee: Baoding Valve Industry Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-04-14
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a straight stroke opening and closing butterfly valve, aiming at providing a butterfly valve which extends and lengthens a valve structure through an opening and closing device and is more suitable for being matched with a worm gear device, the technical scheme is that the straight stroke opening and closing butterfly valve comprises an upper valve rod, the top of the upper valve rod is connected with a connecting block provided with a mortise, a square tenon is joggled in the mortise, one end of the square tenon, which is far away from the mortise, is provided with an opening and closing device, the opening and closing device comprises a guide barrel integrated with the square tenon, a spiral guide groove surrounded by the outer wall of the guide barrel, a guide pin main body arranged in the spiral guide groove and a guide pin in threaded connection with two ends of the guide pin main body, a bracket is arranged outside the guide pin main body, an upper guide groove and a lower guide groove are arranged on the inner wall of the bracket, two ends of the guide pin are arranged in the upper guide groove and the lower guide groove, the structure of the valve is extended and lengthened through the design of the opening and closing device, so that the adaptability of the valve and a worm gear device is higher.

Description

Straight stroke opening and closing butterfly valve

Technical Field

The utility model relates to a valve field of making, in particular to butterfly valve that straight stroke was opened and close.

Background

The butterfly valve is an adjustable switch valve with simple structure, and can be opened and closed by rotating around a valve shaft through a disc plate in a disc form, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

At present, chinese patent with publication number CN204784773U discloses a straight-stroke butterfly valve, which comprises an upper valve rod, a valve body, a valve plate, a valve shaft, a valve seat and a standard interface connecting seat, wherein the standard interface connecting seat is fixedly connected with the valve body, the valve body is fixedly connected with an upper valve rod sleeve, the upper valve rod is movably connected with the upper valve rod sleeve, the upper valve rod is movably connected with a first connecting rod, one end of the first connecting rod is movably connected with a second connecting rod, the second connecting rod is movably connected with the valve plate, the valve body is fixedly connected with an end cover and a shaft sleeve, and the valve shaft is provided with a valve.

Although the straight-stroke butterfly valve is convenient for realizing quick opening or closing of the valve, the worm gear device occupies a relatively large space, and narrow space limitation around the butterfly valve often influences the installation and use of the worm gear device when the butterfly valve is used in cooperation with the worm gear device, so that an accurate opening and closing control system cannot be provided for the butterfly valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a butterfly valve that straight stroke was opened and close, its advantage that has.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a butterfly valve is opened and close to straight stroke, includes the upper valve rod, the upper valve rod top is connected with the connecting block of seting up the tongue-and-groove, the joggle has the square tenon in the tongue-and-groove, the one end that the tongue-and-groove was kept away from to the square tenon is equipped with headstock gear, headstock gear include with the square tenon integrative direction bucket, the spiral guide way that the direction bucket outer wall encircleed, the spiral guide way be equipped with the uide pin main part and with uide pin main part both ends threaded connection's uide pin, the outside of uide pin main part is equipped with the support, the uide groove about being equipped with on the inner wall of support, install in.

Through adopting above-mentioned technical scheme, go up the connecting block at valve rod top and the mode that the direction bucket bottom adopted the joggle, this kind of connected mode tensile strength is high, the durability is good, can once only fix valve rod and direction bucket effectively, reduce the situation of valve internals structural damage, the life of extension valve, the size of the spiral guide way of direction bucket outer wall is controlled accurately, can restrict the opening and closing angle scope of butterfly plate, it is more accurate to compare in the control mode that original arbitrary switching can't control the butterfly plate size that opens and shuts, when the valve function, the uide pin goes up and down to slide in upper and lower guide way, can indicate opening or the closed position of valve for operating personnel, give the audio-visual valve state of operating personnel, reduce the blindness of operation.

Further setting: the outside of upper and lower guide way covers there is transparent cover plate, be equipped with the indicator that is used for cooperating the uide pin on the transparent cover plate, still be equipped with the fixing bolt who runs through transparent plate and support on the transparent cover plate.

Through adopting above-mentioned technical scheme, the transparent cover plate of upper and lower guide way outside cover can support and block the dust, prevent that impurity in the environment from getting into inside the support, it leads to the guide way to be blockked up for a long time, influence headstock gear's normal function, indicator on the transparent cover plate uses with the uide pin cooperation in the upper and lower guide way, can indicate the position that opens and shuts of butterfly plate accurately, operating personnel's blindness has been reduced, the hommization of use has been increased, fixing bolt is used for the dead transparent cover plate of fixed lock, prevent coming off of transparent cover plate among the valve operation process.

Further setting: the top of the guide barrel is provided with a control device, and the control device comprises a hand wheel shaft connected with the top key of the guide barrel and a hand wheel connected with the top of the hand wheel shaft.

Through adopting above-mentioned technical scheme, can play the control action to inside valve rod of valve and butterfly plate through the cooperation of hand wheel and hand wheel axle.

Further setting: the bottom of going up the valve rod is connected with the butterfly plate, the one end that the last valve rod was kept away from to the butterfly plate is connected with lower valve rod, the butterfly plate top is located and is equipped with the disk seat around the valve rod, disk seat down is equipped with around the disk seat bottom is located lower valve rod.

Through adopting above-mentioned technical scheme, butterfly plate top and bottom all are provided with the disk seat, not only can play the effect of fixed butterfly plate, and the fluid pressure in the valve is born to the help butterfly plate, can guide the butterfly plate to do directional motion in the position of restriction moreover.

Further setting: and the top of the upper valve seat is positioned on the upper valve rod and the outer wall of the bearing and is surrounded by a sealing filler, and a filler gland is arranged on the sealing filler.

By adopting the technical scheme, the sealing packing filled in the outer walls of the upper valve rod and the bearing can enable the upper valve seat, the valve rod and the bearing to generate larger pressing force, reduce gaps possibly existing among components, and further achieve good sealing performance, and the packing gland can provide larger pressing force for the sealing packing to enhance the sealing performance.

Further setting: the butterfly plate is characterized in that a valve cover is arranged outside the butterfly plate, and a sealing gasket is filled between the butterfly plate and the valve cover.

Through adopting above-mentioned technical scheme, the space between outside lid of valve and the butterfly plate can be sealed in the setting of seal ring, prevents that the medium of valve inside from revealing the phenomenon because of the damage production that the valve exists.

Further setting: and a bearing is arranged on the outer wall of the top of the upper valve rod.

Through adopting above-mentioned technical scheme, the installation of bearing can reduce valve rod driven friction torque, when operating personnel used the hand wheel, can improve the comfort level of human operation, made the design of valve tend towards hommization.

To sum up, the utility model discloses following beneficial effect has: the valve is extended and lengthened through the design of the opening and closing device, so that the occupied space of the valve is reduced, and the valve is more suitable for being matched with a worm gear speed reducer.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a top view of the hoist apparatus according to embodiment 1;

in the figure, 1, an upper valve rod; 2. connecting blocks; 3. a square tenon; 4. an opening and closing device; 41. a guide barrel; 42. a spiral guide groove; 43. a guide pin body; 44. a guide pin; 5. a support; 6. an upper guide groove and a lower guide groove; 7. a transparent cover plate; 8. an indicator; 9. a control device; 91. a hand wheel shaft; 92. a hand wheel; 10. fixing the bolt; 11. a butterfly plate; 12. a lower valve stem; 13. an upper valve seat; 14. a lower valve seat; 15. sealing and filling; 16. a packing gland; 17. a valve cover; 18. a sealing gasket; 19. and a bearing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a butterfly valve is opened and closed in straight stroke, as shown in fig. 1 and fig. 2, a main body circulation mechanism of the butterfly valve is a butterfly plate 11 arranged inside the valve, the bottom of the butterfly plate 11 is connected with a lower valve rod 12, a lower valve seat 14 is arranged at the bottom of the butterfly plate 11 and located around the lower valve rod 12, the top of the butterfly plate 11 is connected with an upper valve rod 1, an upper valve seat 13 is arranged at the top of the butterfly plate 11 and located around the upper valve rod 1, a bearing 19 is installed on the outer wall of the top of the upper valve rod 1 and used for reducing friction torque of the valve rod, a sealing filler 15 is arranged around the upper valve rod 1 and the bearing 19, and a filler cover 16 is arranged at the top of the sealing filler 15 and used for providing. A valve cover 17 is arranged outside the butterfly plate 11, and a sealing gasket 18 is filled between the butterfly plate 11 and the valve cover 17.

As shown in fig. 1 and 2, the top of the upper valve rod 1 is connected with a connecting block 2 provided with a mortise, the mortise of the connecting block 2 is joggled with an opening and closing device 4, the opening and closing device 4 comprises a guide barrel 41 provided with a square tenon 3 at the bottom, a spiral guide groove 42 is surrounded on the outer wall of the guide barrel 41, the original angle stroke motion mode of the butterfly valve is changed into a straight stroke motion mode, a guide pin main body 43 is arranged inside the spiral guide groove 42, guide pins 44 are in threaded connection with the two ends of the guide pin main body 43, a support 5 is arranged outside the guide pin main body 43, upper and lower guide grooves 6 are arranged on the inner wall of the support 5, and the two ends of each guide pin 44 are installed in the upper and lower guide.

As shown in fig. 1 and 2, the outer portion of the upper and lower guide grooves 6 is covered with a transparent plate for preventing dust from entering the guide grooves, the transparent cover plate 7 is provided with an indicator 8 for matching with the guide pin 44, when the valve operates, the guide pin 44 slides in the upper and lower guide grooves 6 to play a role of indicating an arrow, when an operator controls the opening and closing of the valve, the open and closing state of the valve can be reminded corresponding to the scales on the indicator 8, the transparent cover plate 7 is further provided with a fixing bolt 10 for fixing the transparent cover plate 7, the top of the guide barrel 41 is provided with a control device 9, the bottom of the hand wheel shaft 91 is in key connection with the top of the guide barrel 41, and the hand wheel 92 for operation is installed at the top of.

In the embodiment of the present invention, when the butterfly valve is not in operation, the butterfly plate 11 at the bottom of the butterfly valve is in a closed state to block the medium flowing through the valve, and at this time, the guide pin 44 is located at the bottom of the upper and lower guide grooves 6 corresponding to the off state of the indicator 8 on the transparent cover plate 7, when the butterfly valve is in operation, the hand wheel 92 at the top of the butterfly valve is rotated, the rotation of the hand wheel 92 drives the hand wheel shaft 91 to rotate so as to drive the guide barrel 41 connected with the hand wheel shaft 91 to rotate, the spiral guide groove 42 formed on the outer wall of the guide barrel 41 when the guide barrel 41 rotates corresponds to the size scale movement of itself, the rotation angle of the butterfly plate 11 at the bottom of the valve is precisely controlled according to the actual demand of the flowing medium, when the spiral guide groove 42 rotates to half of the maximum limit rotation angle, the guide pin 44 moves upwards along the upper and lower guide grooves 6 until stops at the middle, in the half-open state, when the spiral guide groove 42 rotates to the maximum limit angle, the guide pin 44 rises to the highest position, the guide pin 44 corresponds to the "open" state on the indicator 8, the butterfly plate 11 is in the fully open state, the internal flow rate of the valve reaches the maximum, at this time, the guide barrel 41 reaches the maximum limit position, and the hand wheel 92 cannot rotate any more.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a butterfly valve is opened and close to straight stroke, includes valve rod (1), its characterized in that: go up valve rod (1) top and be connected with connecting block (2) of seting up the tongue-and-groove, the joggle has square tenon (3) in the tongue-and-groove, the one end that the tongue-and-groove was kept away from in square tenon (3) is equipped with headstock gear (4), headstock gear (4) including with square tenon (3) integrative direction bucket (41), the spiral guide way (42) that the direction bucket (41) outer wall encircleed, be equipped with in spiral guide way (42) uide pin main part (43) and with uide pin main part (43) both ends threaded connection's uide pin (44), the outside of uide pin main part (43) is equipped with support (5), be equipped with guide way (6) from top to bottom on the inner wall of support (5), install in upper and lower guide way (6) at the both ends of uide.

2. The straight stroke opening and closing butterfly valve according to claim 1, characterized in that: the outside of upper and lower guide way (6) covers has transparent cover plate (7), be equipped with indicator (8) that are used for cooperation uide pin (44) on transparent cover plate (7), still be equipped with fixing bolt (10) that run through transparent plate and support (5) on transparent cover plate (7).

3. The straight stroke opening and closing butterfly valve according to claim 2, characterized in that: the top of guide barrel (41) is equipped with controlling means (9), controlling means (9) include hand wheel axle (91) and hand wheel (92) with hand wheel axle (91) top connection with guide barrel (41) top key-type.

4. The straight stroke opening and closing butterfly valve according to claim 3, characterized in that: the bottom of going up valve rod (1) is connected with butterfly plate (11), the one end that last valve rod (1) was kept away from in butterfly plate (11) is connected with lower valve rod (12), valve holder (13) are equipped with all around that butterfly plate (11) top is located last valve rod (1), valve holder (14) are equipped with all around that butterfly plate (11) bottom is located lower valve rod (12).

5. The straight stroke opening and closing butterfly valve according to claim 4, characterized in that: the top of the upper valve seat (13) is positioned on the outer wall of the upper valve rod (1) and is surrounded by a sealing filler (15), and a filler gland (16) is arranged on the sealing filler (15).

6. The straight stroke opening and closing butterfly valve according to claim 5, characterized in that: a valve cover (17) is arranged outside the butterfly plate (11), and a sealing gasket (18) is filled between the butterfly plate (11) and the valve cover (17).

7. The straight stroke opening and closing butterfly valve according to claim 6, characterized in that: and a bearing (19) is arranged on the outer wall of the top of the upper valve rod (1).