CN212429779U

CN212429779U - A globe valve with a long service life

Info

Publication number: CN212429779U
Application number: CN202021102754.5U
Authority: CN
Inventors: 田玉华; 方圣学; 张如灵; 叶春根
Original assignee: Zhejiang Qingtian Huadian Machinery Co ltd
Current assignee: Zhejiang Qingtian Huadian Machinery Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-01-29
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a long service life's stop valve, import and export and inside hollow valve body have respectively including both ends, the inside upside of valve body is equipped with the overhead gage, the inside downside of valve body is equipped with down the baffle, the lower extreme that the valve body inner wall was kept away from to the overhead gage and the upper end that the valve body inner wall was kept away from to lower baffle are located same horizontal plane, there is the valve gap at the valve body top through bolt fixed mounting, the upper and lower rotation runs through and is provided with the valve rod on the valve gap, the valve rod lower extreme penetrates valve body internal connection and is used for the shutoff valve clack, its characterized: be provided with the resistance to compression subassembly that is used for strengthening shock resistance on the valve clack, the valve gap top is provided with the rotatory lift control subassembly that is used for the rotatory lift of control valve rod, the utility model provides a strong, the convenient on-off control of leakproofness and the good long service life's of shock resistance stop valve.

Description

Stop valve with long service life

Technical Field

The utility model relates to the technical field of valves, concretely relates to long service life's stop valve.

Background

The stop valve, also called stop valve, belongs to the forced seal type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, this type of valve is also relatively tight under the action of the medium. The existing stop valve is poor in sealing performance on one hand, easy to cause medium leakage and has potential safety hazards, the stop valve on the market generally adopts a hand wheel at the top of a valve rod to rotate to control the valve rod to rotate so as to open and close the valve, however, the force required by the switch valve is large, manual work sometimes hardly controls the switch, the valve clack of the existing stop valve is easy to reduce the service life of the valve clack under the action of water pressure, and the impact resistance of the stop valve is poor.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a long service life's that the leakproofness is strong, make things convenient for on-off control and impact resistance good stop valve.

The technical scheme of the utility model is realized like this: the utility model provides a long service life's stop valve, has import and export and inside hollow valve body respectively including both ends, the inside upside of valve body is equipped with the overhead gage, the inside downside of valve body is equipped with down the baffle, the lower extreme that the valve body inner wall was kept away from to the overhead gage and the upper end that the valve body inner wall was kept away from to lower baffle are located same horizontal plane, there is the valve gap at the valve body top through bolt fixed mounting, the upper and lower rotation runs through on the valve gap and is provided with the valve rod, the valve rod lower extreme penetrates valve body internal connection and is used for the shutoff valve clack: the valve clack is provided with a compression-resistant component for enhancing impact resistance, the compression-resistant component comprises inner grooves formed in the side walls of the left side and the right side of the valve clack, the bottom of the inner groove is fixedly connected with a spring, a limiting plate is arranged at the notch of the inner groove, one end of the spring, far away from the bottom of the inner groove, is fixedly connected with a sliding block, one end of the sliding block, far away from the spring, is fixedly connected with a buffer block after sliding through the limiting plate, a plurality of openings are sequentially formed in the side wall, far away from the valve clack, of the buffer block in an up-down spaced manner, buffer springs are fixedly arranged on the inner side wall of the openings, one end of each buffer spring is connected with a buffer pressure reducing block sliding in the corresponding opening, a rotary lifting control component for controlling the valve rod to rotate and lift is arranged at, the improved valve rod is characterized in that a control screw rod is connected to the upper end of the valve rod, a first bevel gear is arranged at the top of the supporting plate in a rotating mode, the upper end of the control screw rod sequentially rotates to penetrate through the supporting plate and the first bevel gear and is in threaded rotation fit with the first bevel gear, a bottom plate is fixed to one side of the supporting plate, a driving motor is arranged on the bottom plate, a driving shaft is connected to the output end of the driving motor along the transverse direction, one end, away from the driving motor, of the driving shaft is connected with the control screw rod in a transmission mode through cooperation of a second bevel gear and the first bevel gear, an annular groove is formed in the upper portion of the side.

By adopting the technical scheme, when a medium enters from an inlet, the buffer decompression block is forced to move in the opening under the action of medium pressure, the buffer spring is forced to compress, so that the buffer block is forced to drive the sliding rod to move towards the bottom of the inner groove, the sliding rod drives the sliding block to move towards the bottom of the inner groove, so that the sliding block compresses the spring, the pressure of the medium internal pressure on the valve clack is reduced, the service life of the valve clack is prolonged, the shock resistance of the stop valve is improved, when the valve clack needs to be opened, the driving shaft connected with the output end of the driving shaft is driven to rotate by the bottom plate and drives the second bevel gear to rotate, one end of the driving shaft far away from the driving motor is in transmission connection with the control screw through the matching of the second bevel gear and the first bevel gear, the control screw is driven to rotate, the first bevel gear is rotatably, control screw rod lower extreme and valve rod fixed connection, thereby it rises to drive the valve rod rotation, open the valve clack, at the rotatory in-process that rises of valve rod, the valve rod passes through seal cover and the inner circle mutual contact rotation extrusion of valve gap orientation valve rod, with the relative leakproofness between assurance valve rod and the valve gap, for prior art, the inside seal of stop valve has been improved greatly, has prevented to reveal, the rotatory lift of valve rod is controlled by rotatory lift control subassembly simultaneously, make things convenient for the on-off control stop valve, the structure of resistance to compression subassembly has improved the shock resistance of stop valve, the utility model provides a strong, make things convenient for the long service life's that on-off control and shock resistance are good stop valve.

The utility model discloses further set up to: the valve comprises a valve rod, a valve cover and a sealing ring gasket, wherein the valve cover is arranged on the valve rod, the valve cover is arranged on the inner ring of the valve rod, the inner ring of the valve cover faces the valve rod, an annular fixing groove.

Through adopting above-mentioned technical scheme, in order to further improve the relative leakproofness between the rotatory lift in-process of valve rod and the valve gap, seted up annular fixed slot along circumference on the inner circle of valve gap orientation valve rod, be provided with the sealing ring circle pad that is used for cooperating the seal cover in annular fixed slot inside, at the rotatory lift in-process of valve rod, the valve rod passes through the sealing ring circle pad in seal cover and the valve gap inner wall and the annular fixed slot and contacts rotatory extrusion each other to guarantee the relative leakproofness between valve rod and the valve gap.

The utility model discloses further set up to: the valve cap upper surface just is located and is provided with the fixed pipe of direction around the valve rod in the support section of thick bamboo, the bottom fixed mounting of the fixed inside pipe wall of direction has the sealed tube, the fixed cover in valve rod upper portion surface has connect sealed post, sealed post is pegged graft at the fixed pipe of direction and sealed intraduct, the cross section diameter of sealed post from bottom to top crescent is the back taper platform form.

Through adopting above-mentioned technical scheme, the rotatory decline in-process of valve rod, sealed post descends along the fixed pipe of direction and the sealed rotation of pipe, finally, sealed post bottom pushes up the valve gap upper surface, the cooperation sealed tube forms sealedly, the valve rod passes through the sealed ring gasket rotation extrusion of mutual contact in seal cover and the valve gap inner wall and the annular fixed slot, in order to guarantee the relative leakproofness between valve rod and the valve gap, in order to be further convenient for at the decline in-process, the air is discharged from the edge between sealed post bottom and the valve gap upper surface, the cross section diameter of sealed post sets up to from bottom to top and is the back taper platform form.

The utility model discloses further set up to: the bottom plate upper cover is provided with a shell used for protecting the driving motor, and one end, far away from the driving motor, of the driving shaft penetrates through the shell and then is connected with the second bevel gear.

Through adopting above-mentioned technical scheme, in order to improve the protection to driving motor, prevent that external rainwater from directly falling and causing the loss on driving motor, reduce driving motor life, be equipped with the shell that is used for protecting driving motor on the bottom plate upper cover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a valve flap structure according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in figures 1-2, the utility model discloses a stop valve with long service life, which comprises a hollow valve body 1 with an inlet 3 and an outlet 4 at two ends, an upper baffle 5 is arranged at the upper side inside the valve body 1, a lower baffle 6 is arranged at the lower side inside the valve body 1, the lower end of the upper baffle 5 far away from the inner wall of the valve body 1 and the upper end of the lower baffle 6 far away from the inner wall of the valve body 1 are positioned at the same horizontal plane, a valve cover 2 is fixedly arranged at the top of the valve body 1 through bolts, a valve rod 7 is arranged on the valve cover 2 in a up-and-down rotating and penetrating way, the lower end of the valve rod 7 penetrates into the valve body 1 and is connected with a valve clack 8 for blocking, in the specific embodiment of the utility model, a compression-resistant component for enhancing impact resistance is arranged on the valve, the spring 12 is fixedly connected to the bottom of the inner groove 11, a limiting plate 13 is arranged at the notch of the inner groove 11, a sliding block 14 is fixedly connected to one end of the spring 12, which is far away from the bottom of the inner groove 11, a sliding rod 15 is fixedly connected to one end of the sliding rod 14, which is far away from the spring 12, a buffer block 16 is fixedly connected to one end of the sliding rod 15 after sliding through the limiting plate 13, a plurality of openings 17 are sequentially arranged on the side wall of one side of the buffer block 16, which is far away from the valve clack 8, at intervals from top to bottom, a buffer spring 18 is fixedly arranged on the inner side wall of the opening 17, a buffer pressure reducing block 19 sliding in the opening 17 is connected to one end of the buffer spring 18, a rotary lifting control component for controlling the rotary lifting of the valve rod 7 is arranged at the top of the valve cover, the upper end of the valve rod 7 is connected with a control screw rod 23, the top of the support plate 22 is rotatably provided with a first bevel gear 24, the upper end of the control screw rod 23 sequentially rotates to penetrate through the support plate 22 and the first bevel gear 24 and is in threaded rotation fit with the first bevel gear 24, a bottom plate 25 is fixed on one side of the support plate 22, a driving motor 26 is arranged on the bottom plate 25, the output end of the driving motor 26 is transversely connected with a driving shaft 27, one end, away from the driving motor 26, of the driving shaft 27 is in transmission connection with the control screw rod 23 through the matching of a second bevel gear 28 and the first bevel gear 24, an annular groove 31 is formed in the upper portion of the side wall of the valve rod 7 along the circumferential direction, a sealing sleeve 32 is fixed in the annular groove 31, and.

By adopting the technical scheme, when a medium enters from the inlet 3, the buffer pressure reducing block 19 is stressed to move towards the opening 17 under the action of medium pressure, the buffer spring 18 is stressed and compressed, the buffer block 16 is stressed to drive the sliding rod 15 to move towards the bottom of the inner groove 11, the sliding rod 15 drives the sliding block 14 to move towards the bottom of the inner groove 11 of the inner groove, the sliding block 14 compresses the spring 12, the pressure of the medium internal pressure on the valve clack 8 is reduced, the service life of the valve clack 8 is prolonged, the shock resistance of the stop valve is improved, when the valve clack 8 needs to be opened, the driving shaft 27 connected with the output end of the driving shaft 25 is driven to rotate by the bottom plate 25 and drives the second bevel gear 28 to rotate, one end, far away from the driving motor 26, of the driving shaft 27 is in transmission connection with the control screw 23 through the cooperation of, first bevel gear 24 rotates and sets up at backup pad 22 top, thereby make rotatory control screw 23 rotatory and rise, control screw 23 lower extreme and valve rod 7 fixed connection, thereby drive the rotatory ascending of valve rod 7, open valve clack 8, at the rotatory ascending in-process of valve rod 7, valve rod 7 passes through seal cover 32 and the rotatory extrusion of inner circle mutual contact of valve rod 7 of valve gap 2 orientation, with the relative leakproofness of guaranteeing between valve rod 7 and the valve gap 2, compared with the prior art, the internal seal nature of stop valve has been improved greatly, leakage has been prevented, the rotatory lift of valve rod 7 is controlled by rotatory lift control subassembly simultaneously, make things convenient for the on-off control stop valve, the structure of resistance to compression subassembly has improved the shock resistance of stop valve, the utility model provides a strong, make things convenient for the long service life's that on-off control and shock resistance are good stop valve.

In the embodiment of the present invention, the valve cover 2 has an annular fixing groove 33 formed along the circumferential direction toward the inner ring of the valve rod 7, and a sealing ring gasket 34 for fitting the sealing sleeve 32 is disposed inside the annular fixing groove 33.

Through adopting above-mentioned technical scheme, in order to further improve the relative leakproofness between the rotatory lift in-process of valve rod 7 and valve gap 2, seted up annular fixed slot 33 along circumference on the inner circle of valve gap 2 towards valve rod 7, be provided with the sealing ring gasket 34 that is used for cooperating seal cover 32 in annular fixed slot 33 inside, at the rotatory lift in-process of valve rod 7, valve rod 7 passes through sealing cover 32 and valve gap 2 inner wall and the rotatory extrusion of sealing ring gasket 34 mutual contact in annular fixed slot 33 to guarantee the relative leakproofness between valve rod 7 and the valve gap 2.

The utility model discloses in the embodiment, valve gap 2 upper surface just is located and is provided with the fixed pipe 41 of direction around valve rod 7 in the support section of thick bamboo 21, the bottom fixed mounting of the fixed pipe 41 inner wall of direction has sealed tube 42, valve rod 7 upper portion fixed surface has cup jointed sealed post 43, sealed post 43 is pegged graft inside fixed pipe 41 of direction and sealed tube 42, the cross section diameter of sealed post 43 from bottom to top crescent is the back taper.

Through adopting above-mentioned technical scheme, the rotatory in-process that descends of valve rod, sealed post 43 descends along the rotation of direction fixed tube 41 and sealed tube 42, finally, sealed post 43 bottom pushes up valve gap 2 upper surface, cooperation sealed tube 42 forms sealedly, valve rod 7 contacts rotatory extrusion each other through seal cover 32 and valve gap 2 inner wall and the sealing ring gasket 34 in the annular fixed slot 33, in order to guarantee the relative leakproofness between valve rod 7 and the valve gap 2, in order to be further convenient for at the descending in-process, air is discharged from the edge between sealed post 43 bottom and the valve gap 2 upper surface, set up the cross section diameter of sealed post 43 to be from bottom to top and be the back taper.

In the embodiment of the present invention, the bottom plate 25 is covered with a casing 29 for protecting the driving motor 26, and one end of the driving shaft 27 far away from the driving motor 26 is connected to the second bevel gear 28 after penetrating through the casing 29.

Through adopting above-mentioned technical scheme, in order to improve the protection to driving motor 26, prevent that external rainwater from directly arriving and causing the loss on driving motor 26, reduce driving motor 26 life, cover on bottom plate 25 and be equipped with the shell 29 that is used for protecting driving motor 26.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. 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 a long service life's stop valve, has import (3) and export (4) and inside hollow valve body (1) respectively including both ends, the inside upside of valve body (1) is equipped with overhead gage (5), the inside downside of valve body (1) is equipped with down baffle (6), the lower extreme of valve body (1) inner wall is kept away from in overhead gage (5) and lower baffle (6) keep away from the upper end of valve body (1) inner wall and be located same horizontal plane, there is valve gap (2) valve body (1) top through bolt fixed mounting, the rotation runs through and is provided with valve rod (7) under valve gap (2) is gone up, valve rod (7) lower extreme penetrates valve body (1) internal connection has valve clack (8) that are used for the shutoff to end, its characterized in that: the anti-pressure valve is characterized in that the valve clack (8) is provided with an anti-pressure component for enhancing impact resistance, the anti-pressure component comprises inner grooves (11) formed in the side walls of the left side and the right side of the valve clack (8), the inner groove bottom of each inner groove (11) is fixedly connected with a spring (12), a limiting plate (13) is arranged at the notch of each inner groove (11), one end, far away from the inner groove bottom of each inner groove (11), of each spring (12) is fixedly connected with a sliding block (14), one end, far away from the spring (12), of each sliding block (14) is fixedly connected with a sliding rod (15), one end of each sliding rod (15) penetrates through the limiting plate (13) in a sliding mode and is fixedly connected with a buffer block (16), a plurality of open holes (17) are formed in the side wall, far away from the valve clack (8), of each buffer block (16), the side wall of each open hole (17, the valve cover (2) is provided with a rotary lifting control assembly for controlling the valve rod (7) to rotate and lift at the top, the rotary lifting control assembly comprises a supporting cylinder (21) arranged at the top of the valve cover (2) and a supporting plate (22) arranged at the top of the supporting cylinder (21) in a covering manner, a control screw rod (23) is connected to the upper end of the valve rod (7), a first bevel gear (24) is arranged at the top of the supporting plate (22) in a rotating manner, the upper end of the control screw rod (23) sequentially rotates to penetrate through the supporting plate (22) and the first bevel gear (24) and is in threaded rotation fit with the first bevel gear (24), a bottom plate (25) is fixed to one side of the supporting plate (22), a driving motor (26) is arranged on the bottom plate (25), the output end of the driving motor (26) is transversely connected with a driving shaft (27), and one end, far away from the driving motor (26), of the driving shaft (23) The valve rod (7) is in transmission connection, an annular groove (31) is formed in the upper portion of the side wall of the valve rod (7) along the circumferential direction, a sealing sleeve (32) is fixed in the annular groove (31), and the valve rod (7) is rotationally extruded towards the inner ring of the valve rod (7) in a mutual contact mode through the sealing sleeve (32) and the valve cover (2).

2. A long-life stop valve as claimed in claim 1, wherein: the valve cap (2) is provided with an annular fixing groove (33) towards the inner ring of the valve rod (7) along the circumferential direction, and a sealing ring gasket (34) used for being matched with the sealing sleeve (32) is arranged inside the annular fixing groove (33).

3. A long-life stop valve as claimed in claim 2, wherein: valve gap (2) upper surface just is located and is provided with direction fixed tube (41) around valve rod (7) in support section of thick bamboo (21), the bottom fixed mounting of direction fixed tube (41) inner wall has sealed tube (42), the fixed cover in valve rod (7) upper portion surface has connect sealed post (43), sealed post (43) are pegged graft inside direction fixed tube (41) and sealed tube (42), the cross section diameter of sealed post (43) from bottom to top increases gradually and is the back taper platform form.

4. A long-life stop valve as claimed in claim 1, 2 or 3, wherein: the upper cover of the bottom plate (25) is provided with a shell (29) used for protecting the driving motor (26), and one end of the driving shaft (27) far away from the driving motor (26) penetrates through the shell (29) and then is connected with the second bevel gear (28).