CN111765266A

CN111765266A - Industrial ball valve

Info

Publication number: CN111765266A
Application number: CN202010670766.6A
Authority: CN
Inventors: 李祥庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-10-13

Abstract

The invention discloses an industrial ball valve, which comprises a valve body, a valve cover, a valve rod and a ball body, and is characterized in that: the ball body is provided with two valve seats which are in sealing fit and distributed left and right, the two valve seats are respectively arranged on respective valve seat sleeves, the valve seat sleeves can be axially moved and circumferentially rotated and arranged in the mounting groove of the valve body, a plane bearing and a pre-tightening spring are arranged in the mounting groove, the inner side of the plane bearing is abutted with the valve seat sleeves, and the pre-tightening spring is abutted between the outer side of the plane bearing and the bottom of the mounting groove; the upper end of the sphere is provided with a central hole, the two sides of the central hole are respectively provided with an inner driving disk and an outer driving disk which are arranged inside and outside, the inner driving disk can be arranged on the upper end surface of the sphere in a horizontal swinging mode, the inner driving disk is provided with an elastic resetting piece, the outer driving disk can be arranged on the upper end surface of the sphere in a radial moving mode, the outer driving disk is matched with the bevel gear of the valve seat sleeve, the corresponding inner driving disk is driven by the valve. The invention reduces the abrasion of the sealing surface of the valve seat and effectively prolongs the service life of the valve.

Description

Industrial ball valve

Technical Field

The invention relates to an improved ball valve, in particular to an improved industrial ball valve.

Background

The ball valve comprises a ball body, a valve seat and a medium, wherein the ball body is made of a metal material, the valve seat is made of a non-metal material, part of a sealing surface of the valve seat can be separated from the surface of the ball body in the opening and closing process of the ball body, part of the sealing surface of the valve seat is attached to the surface of the ball body all the time, when a medium contains impurities and is attached to the surface of the ball body or the sealing surface of the valve seat, the impurities are washed away by the medium when being located at the position of the sealing surface of the valve seat which can be separated from the surface of the ball body, and if the impurities are located at the position of the sealing surface of the valve seat which is. (because the valve seat is pressed tightly on the surface of the ball body by the pushing of the seat spring, if the surface of the ball body is stuck with sundries, the sealing surface of the valve seat tightly stuck on the surface of the ball body can be easily entered in the opening or closing process).

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the industrial ball valve which can prevent the sealing surface of the valve seat from being worn and prolong the service life.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme: this kind of industry ball valve, including valve body, valve gap, valve rod and spheroid, be equipped with inlet chamber and the export chamber that distributes about in the valve body, the spheroid rotates to set up intercommunication in the valve body or blocks inlet chamber and export chamber, the valve body upper end is located to the valve gap lid, the valve rod rotates to wear to locate on the valve gap, and the valve rod lower extreme links to each other with the spheroid transmission, and the valve rod upper end is equipped with drive arrangement, its characterized in that: the inner ends of the inlet cavity and the outlet cavity are respectively provided with two valve seats which are hermetically matched with the ball body and distributed left and right, the two valve seats are respectively arranged on respective valve seat sleeves, the valve seat sleeves can axially move and circumferentially rotate and are arranged in mounting grooves of the valve body, a plane bearing and a pre-tightening spring are arranged in the corresponding mounting grooves, the inner side of the plane bearing is abutted against the valve seat sleeves, and the pre-tightening spring is abutted between the outer side of the plane bearing and the bottom of the mounting grooves; the upper end of the ball body is provided with a center hole, the two sides of the center hole are respectively provided with an inner driving disc and an outer driving disc which are arranged inside and outside, the inner driving disc can be horizontally arranged on the upper end surface of the ball body in a swinging manner, the inner driving disc is provided with an elastic reset piece, the outer driving disc can be arranged on the upper end surface of the ball body in a radial moving manner, the outer side surface of the outer driving disc is provided with a gear ring, a gear disc is arranged on a corresponding valve seat sleeve, the gear ring is in transmission fit with the gear disc, the outer side of the inner driving disc is provided with an elastic driving piece, the elastic driving piece is in transmission fit with the inner side surface of the outer driving disc, the inner side surface of the inner driving disc is provided with a driving groove, the inner wall of the upper section of the center hole is provided with a key and a, and the upper key and the key groove are matched to drive the ball body to rotate, and an upper key idle clearance is reserved in the corresponding key groove.

Preferably, the upper end of the valve cover is provided with a support, the support is provided with a lower adjusting sleeve, the lower adjusting sleeve is externally screwed with an upper adjusting sleeve, the upper end of the upper adjusting sleeve is penetrated with a cross rod, the valve rod penetrates through the lower adjusting sleeve, the upper adjusting sleeve and the cross rod, and the valve rod is in axial transmission fit with the cross rod.

Preferably, the valve rod is provided with an annular groove, and the middle part of the cross rod is provided with a shaft hole which is rotatably sleeved in the annular groove.

Preferably, the lower end of the outer driving disk is provided with a guide block, the upper end face of the sphere is provided with a guide groove, the guide block is in guide fit with the guide groove, the upper end face of the sphere is also provided with an outer positioning sleeve, and the outer positioning sleeve is in limit fit with two ends of the outer driving disk.

Preferably, the elastic driving part comprises a first spring and a push rod, the push rod can move inside and outside and swing in a groove in the outer side face of the inner driving disk, a ball is arranged at the inner end of the push rod, the first spring is connected between the ball and the groove, and the outer end of the push rod is connected to the inner side face of the outer driving disk.

Preferably, the elastic reset piece is a second spring, one end of the second spring is connected to the upper end face of the sphere, and the other end of the second spring is connected to the inner driving disk.

Preferably, the upper key has a cross section smaller than that of the key groove.

The improved industrial ball valve has the advantages that the improved industrial ball valve can be arranged in the opening or closing process, the valve seat is driven to rotate around the axis of the valve seat, the sealing surface of the valve seat tightly attached to the surface of a ball body can also rotate to the position where the sealing surface of the valve seat can be separated from the surface of the ball body, sundries at any position of the sealing surface of the valve seat can be washed away by media, the abrasion of the sealing surface of the valve seat is reduced, the service life of the valve seat is effectively prolonged, and the service life of the valve is prolonged.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the lower key of the present invention located in the key slot.

Fig. 2 is a schematic view of the key of the present invention located in the key slot.

Fig. 3 is a cross-sectional view D-D of fig. 1 of the present invention.

Fig. 4 is a cross-sectional view E-E of fig. 2 of the present invention.

Fig. 5 is a view of the valve stem of fig. 1 of the present invention in the direction of C.

Detailed Description

The drawings show the structure of the invention, and the details thereof are further described below with reference to the drawings. In this embodiment, this industrial ball valve includes valve body 1, valve gap 2, valve rod 3 and spheroid 4, inlet chamber 5 and outlet chamber 6 that distribute about being equipped with in the valve body 1, spheroid 4 rotates through lower valve rod 17 and sets up intercommunication or block inlet chamber 5 and outlet chamber 6 in the valve body 1, is equipped with the through-hole on the corresponding spheroid 4, valve gap 2 lid is located valve body 1 upper end, valve rod 3 rotates and wears to locate on valve gap 2, and valve rod 3 lower extreme links to each other with spheroid 4 transmission, and valve rod 3 upper end is equipped with drive arrangement 7, and drive arrangement 7 can be a pot wheel device, electric actuator, pneumatic means, hydraulic drive or handle, the inner of inlet chamber 5 and outlet chamber 6 is equipped with respectively with spheroid 4 sealed cooperation, two disk seats 8 that distribute about, two disk seats 8 set up respectively on respective disk seat cover 9, but disk seat cover 9 axial displacement and circumferential direction set up in mounting groove 10 of valve body 1, a plane bearing 11 and a pre-tightening spring 12 are arranged in the corresponding mounting groove 10, the inner side of the plane bearing 11 is abutted with the valve seat sleeve 9, the pre-tightening spring 12 is abutted between the outer side of the plane bearing 11 and the bottom of the mounting groove 10, and the pre-tightening spring 12 enables the valve seat 8 to be tightly attached to the ball 4 by transmitting the plane bearing 11 and the valve seat sleeve 9; the upper end of the sphere 4 is provided with a central hole 13, the two sides of the central hole 13 are respectively provided with an inner driving disk 14 and an outer driving disk 15 which are arranged inside and outside, the inner driving disk 14 can be horizontally arranged on the upper end surface of the sphere 4 in a swinging manner through a pin shaft 16, the inner driving disk 14 is provided with an elastic resetting piece 17, the outer driving disk 15 can be radially arranged on the upper end surface of the sphere 4 in a moving manner, the outer side surface of the outer driving disk 15 is provided with a gear ring 18, a gear disk 19 is arranged on a corresponding valve seat sleeve 9, the gear ring 18 is in transmission fit with the gear disk 19, the outer side of the inner driving disk 14 is provided with an elastic driving piece 20, the elastic driving piece 20 is in transmission fit with the inner side surface of the outer driving disk 15, the inner side surface of the inner driving disk 14 is provided with a driving groove 24, the upper, the lower key 23 and the key groove 21 are matched with the transmission ball 4 to rotate, when the valve rod 3 is at a low position, the upper key 22 and the driving groove 24 are matched to drive the inner driving disc 14 to swing, the driving groove 24 is internally provided with an inclined plane in driving fit with the upper key 22, the upper key 22 and the key groove 21 are matched with the transmission ball 4 to rotate, and the corresponding key groove 21 is internally reserved with an idle clearance of the upper key 22.

As a further improved specific embodiment, the upper end of the valve cap 2 is provided with a support 25, the support 25 is provided with a lower adjusting sleeve 26, the lower adjusting sleeve 26 is externally screwed with an upper adjusting sleeve 27, the upper end of the upper adjusting sleeve 27 is penetrated with a cross rod 28, the valve rod 3 passes through the lower adjusting sleeve 26, the upper adjusting sleeve 27 and the cross rod 28, and the valve rod 3 is in axial transmission fit with the cross rod 28, and during operation, the upper adjusting sleeve 27 is adjusted through rotation, the upper adjusting sleeve 27 moves up and down on the lower adjusting sleeve 26, so that the cross rod 28 drives the valve rod 3 to move axially. Preferably, the cross bar 28 is axially driven with the valve rod 3, the valve rod 3 is provided with an annular groove 29, the middle of the cross bar 28 is formed with a shaft hole 30, and the shaft hole 30 is rotatably sleeved in the annular groove 29.

As a specific embodiment of further improvement, the lower end of the external driving disk 15 is provided with a guide block 31, the upper end surface of the sphere 4 is provided with a guide groove 32, the guide block 31 is in guiding fit with the guide groove 32, the upper end surface of the sphere 4 is further provided with an external positioning sleeve 33, the external positioning sleeve 33 is in limit fit with two ends of the external driving disk 15, the above structure is used for limiting the radial movement of the external driving disk 15 on the upper end surface of the sphere 4, and the external driving disk 15 can rotate together with the sphere 4.

As a further improved specific embodiment, the elastic driving member 20 includes a first spring 34 and a push rod 35, the push rod 35 is disposed in a groove 37 on the outer side of the inner driving disk 14 in a manner of moving and swinging inside and outside, a ball 36 is disposed at the inner end of the push rod 35, the first spring 34 is connected between the ball 36 and the groove 37, and the outer end of the push rod 35 is connected to the inner side of the outer driving disk 15. In operation, when the inner driving disk 14 is driven by the valve rod 3 and the upper key 22 to swing, the first spring 34 and the push rod 35, which are matched with each other, will push the outer driving disk 15 to move radially outwards.

As a further improved embodiment, the elastic restoring member is a second spring 38, one end of the second spring 38 is connected to the upper end surface of the sphere 4, the other end of the second spring 38 is connected to the inner driving disk 14, the second spring 38 is used for restoring the inner driving disk 14 to swing back, and the corresponding first spring 34 and the push rod 35 which are mutually matched pull the outer driving disk 15 to move radially inwards.

In a further improved embodiment, the cross section of the upper key 22 is smaller than that of the key groove 21, so that an idle clearance of the upper key 22 is reserved in the key groove 21, and the upper key 22 acts on the driving groove 24 first to drive the inner driving disk 14 and the outer driving disk 15 to act in turn, so that the gear ring 18 of the outer driving disk 15 is meshed with the gear disk 19 of the valve seat sleeve 9.

The working principle of the invention is as follows: when there is no foreign matter between the surface of the ball 4 and the sealing surface of the valve seat 8, the lower key 23 is positioned at the key slot 21, and the ball valve is opened or closed by rotating the handle 90 degrees.

When entering debris between 4 surfaces of spheroid and the 8 sealed faces of valve seat, rotatory adjusting collar 27, drive valve rod 3 and move down, make lower key 23 break away from keyway 21, go up key 22 and get into in the keyway 21, because reserve key 22 idle running clearance in the keyway 21, before utilizing the handle to drive spheroid 4 and open or close, the handle need drive valve rod 3 in advance, go up key 22 and lower key 23 and rotate certain angle, go up key 22 and drive groove 24 and take place the transmission relation earlier promptly, the opening or closing process at this moment is as follows:

the starting process of the invention is as follows: anticlockwise rotating the handle, drive valve rod 3 anticlockwise rotation, at this moment, go up key 22 and drive inner drive dish 14 clockwise rotation around round pin axle 16, at this moment, second spring 38 promotes push rod 35 and outer drive dish 15 and outwards removes along guide way 32, the ring gear 18 of outer drive dish 15 forms bevel gear transmission with the toothed disc 19 of valve seat cover 9, continue anticlockwise rotating the handle, when going up key 22 and rotating to the opposite side in the keyway 21 from one side in the keyway 21, then drive spheroid 4 anticlockwise rotation, the valve is opened, simultaneously, outer drive dish 15 drives toothed disc 19, valve seat cover 9 and valve seat 8 are rotatory, make the sealed face part of valve seat 8 who hugs closely in spheroid 4 surface rotatory to the position that can break away from spheroid 4 surface, the medium can wash away the debris that paste in the sealed face part of valve seat 8. (if, when the external driving disk 15 moves outwards, the tooth top of the gear ring 18 of the external driving disk 15 does not enter the tooth space of the gear disk 19 of the valve seat sleeve 9, because the external driving disk 15 can move radially, the handle is rotated counterclockwise continuously, the external driving disk 15 is driven to rotate, so that the external driving disk 15 can be meshed with the gear disk 19.)

The closing process of the invention: the handle is rotated clockwise to drive the valve rod 3 to rotate clockwise, at this time, the upper key 22 rotates clockwise from the key slot 21, in the process, the inner driving disk 14 rotates counterclockwise around the pin shaft 16 under the action of the first spring 34, the outer driving disk 15 moves inwards along the guide groove 32 under the pulling action of the second spring 38, the gear ring 18 of the outer driving disk 15 is separated from the bevel gear connection with the gear disk 19 of the valve seat sleeve 9, when the upper key 22 returns to the other side in the key slot 21 from one side in the key slot 21, the ball 4 is driven to rotate clockwise, the valve is closed, and in the process, the valve seat 8 and the valve seat sleeve 9 cannot rotate.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an industrial ball valve, including valve body, valve gap, valve rod and spheroid, be equipped with inlet chamber and the export chamber that distributes about in the valve body, the spheroid rotates and sets up intercommunication or block inlet chamber and export chamber in the valve body, the valve body upper end is located to the valve gap lid, the valve rod rotates and wears to locate on the valve gap, and the valve rod lower extreme links to each other with the spheroid transmission, and the valve rod upper end is equipped with drive arrangement, its characterized in that: the inner ends of the inlet cavity and the outlet cavity are respectively provided with two valve seats which are hermetically matched with the ball body and distributed left and right, the two valve seats are respectively arranged on respective valve seat sleeves, the valve seat sleeves can axially move and circumferentially rotate and are arranged in mounting grooves of the valve body, a plane bearing and a pre-tightening spring are arranged in the corresponding mounting grooves, the inner side of the plane bearing is abutted against the valve seat sleeves, and the pre-tightening spring is abutted between the outer side of the plane bearing and the bottom of the mounting grooves; the upper end of the ball body is provided with a center hole, the two sides of the center hole are respectively provided with an inner driving disc and an outer driving disc which are arranged inside and outside, the inner driving disc can be horizontally arranged on the upper end surface of the ball body in a swinging manner, the inner driving disc is provided with an elastic reset piece, the outer driving disc can be arranged on the upper end surface of the ball body in a radial moving manner, the outer side surface of the outer driving disc is provided with a gear ring, a gear disc is arranged on a corresponding valve seat sleeve, the gear ring is in transmission fit with the gear disc, the outer side of the inner driving disc is provided with an elastic driving piece, the elastic driving piece is in transmission fit with the inner side surface of the outer driving disc, the inner side surface of the inner driving disc is provided with a driving groove, the inner wall of the upper section of the center hole is provided with a key and a, and the upper key and the key groove are matched to drive the ball body to rotate, and an upper key idle clearance is reserved in the corresponding key groove.

2. An industrial ball valve as defined in claim 1 wherein: the valve comprises a valve cover and is characterized in that a support is arranged at the upper end of the valve cover, a lower adjusting sleeve is arranged on the support, an upper adjusting sleeve is connected with the outer thread of the lower adjusting sleeve in a threaded manner, a cross rod penetrates through the upper end of the upper adjusting sleeve, a valve rod penetrates through the lower adjusting sleeve, the upper adjusting sleeve and the cross rod, and the valve rod is in axial transmission fit with the cross rod.

3. An industrial ball valve as defined in claim 2 wherein: the valve rod is provided with an annular groove, the middle part of the cross rod is provided with a shaft hole, and the shaft hole is rotatably sleeved in the annular groove.

4. An industrial ball valve as defined in claim 1 wherein: the lower end of the outer driving disk is provided with a guide block, the upper end face of the sphere is provided with a guide groove, the guide block is in guide fit with the guide groove, the upper end face of the sphere is also provided with an outer positioning sleeve, and the outer positioning sleeve is in limit fit with two ends of the outer driving disk.

5. An industrial ball valve as defined in claim 1 wherein: the elastic driving part comprises a first spring and a push rod, the push rod can move inside and outside and swing in a groove in the outer side face of the inner driving disk, a ball is arranged at the inner end of the push rod, the first spring is connected between the ball and the groove, and the outer end of the push rod is connected to the inner side face of the outer driving disk.

6. An industrial ball valve as defined in claim 1 wherein: the elastic reset piece is a second spring, one end of the second spring is connected to the upper end face of the sphere, and the other end of the second spring is connected to the inner driving disc.

7. An industrial ball valve as defined in claim 1 wherein: the cross section of the upper key is smaller than that of the key groove.