CN212616336U

CN212616336U - Stop valve

Info

Publication number: CN212616336U
Application number: CN202021362270.4U
Authority: CN
Inventors: 胡隆; 余朝阳; 胡胜聪; 吕进益
Original assignee: Zhejiang Boda Valve Co ltd
Current assignee: Zhejiang Boda Valve Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-02-26
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to a 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 tilting 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, and the valve gap top is provided with valve rod operating assembly, the utility model provides a high, the security is good and make things convenient for start.

Description

Stop valve

Technical Field

The utility model relates to a valve production technical field, concretely relates to 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 sealing performance of current stop valve one side is poor, takes place the medium easily and leaks, has the potential safety hazard, and the stop valve on the other hand market generally all adopts the hand wheel at valve rod top to come the rotation of rotary control valve rod, carries out the switch of valve, and the power that the on-off valve needs is great, and the hand wheel rotates and has not been used for a long time the stop valve more to be difficult to open, from this needs to improve.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a stop valve that leakproofness is high, the security is good and conveniently open and close the switch.

The technical scheme of the utility model is realized like this: the utility model provides a 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, its: the valve rod operating assembly is arranged at the top of the valve cover and comprises a supporting cylinder arranged at the top of the valve cover and a supporting plate covered at the top of the supporting cylinder, a control screw rod is fixedly connected at the upper end of the valve rod, the upper end of the control screw rod is rotated to penetrate through a threaded hole preset on the supporting plate, a ring groove is circumferentially arranged at the upper part of the side wall of the valve rod, a seal sleeve is fixed in the ring groove, the valve rod is contacted with an inner ring of the valve cover towards the valve rod through the seal sleeve to be rotated and extruded, a ring fixing groove is circumferentially arranged on the inner ring of the valve cover towards the valve rod, a seal ring gasket used for matching with the seal sleeve is arranged in the ring fixing groove, a hand wheel is fixed at the upper part of the control screw rod and positioned above the supporting plate, a detachable, the utility model discloses a fixed hand wheel of bracing piece, including solid fixed ring, bracing piece, solid fixed ring, the bracing piece one end is fixed on solid fixed ring lateral wall, the one end that solid fixed ring was kept away from to the bracing piece is provided with the cylindric handle that is convenient for grip, the bracing piece lower surface is provided with the chucking subassembly that is used for the fixed hand wheel of.

By adopting the technical scheme, when the valve clack needs to be opened, if the hand wheel is difficult to rotate, the wrench assembly is arranged on the hand wheel and comprises the fixing ring and the supporting rod, the fixing ring is sleeved at the upper end of the control screw rod, one end of the supporting rod is fixed on the outer side wall of the fixing ring, one end of the supporting rod, far away from the fixing ring, is provided with the cylindrical handle which is convenient to hold, the lower surface of the supporting rod is provided with the clamping assembly which is used for clamping the fixed hand wheel, the handle is pulled to rotate the hand wheel to drive the control screw rod to rotate, the wrench assembly can increase the torsional moment, time and labor are saved during use and convenient to open, the control screw rod is driven to rotate, the lower end of the control screw rod is fixedly connected with the valve rod, so that the valve rod, with the relative leakproofness of guaranteeing between valve rod and the valve gap, for prior art, the inside leakproofness of stop valve has been improved greatly, leakage has been prevented, come the rotatory lift of operation control hand wheel and control screw by spanner subassembly simultaneously, make things convenient for the on-off control stop valve, in order to further improve the relative leakproofness between the rotatory lift in-process of valve rod and the valve gap, circle circumference along having seted up annular fixed slot in the valve gap towards the inner circle of valve rod, the inside sealing ring circle pad that is used for cooperating the seal cover that is provided with of annular fixed slot, 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, with the relative leakproofness between assurance valve rod and the valve gap, the utility model provides a high, the security is good and make things convenient for.

The utility model discloses further set up to: the hand wheel includes foreign steamer and interior wheel, a plurality of connecting rods of even setting between foreign steamer and the interior wheel, interior wheel is fixed on control screw rod upper portion, the chucking subassembly is including fixing two first fixed blocks and the second fixed block at the bracing piece lower surface, the connecting rod chucking is between first fixed block, with the foreign steamer outer wall and the second fixed block chucking of connecting rod junction.

Through adopting above-mentioned technical scheme, when the valve clack is opened to needs, if adopt the hand wheel to be difficult to when rotatory, establish solid fixed ring cover in the screw rod upper end, the connecting rod chucking is between first fixed block, with the foreign steamer outer wall and the second fixed block chucking of connecting rod junction, bracing piece one end is fixed on solid fixed ring lateral wall, the one end that solid fixed ring was kept away from to the bracing piece is provided with the cylindric handle of being convenient for to grip, pull the handle after the installation and come rotatory hand wheel, it is rotatory to drive the control screw, the spanner subassembly can increase torsional moment, time saving and labor saving during the use.

The utility model discloses further set up to: annular grooves are formed in the side wall of the handle at equal intervals along the length direction in sequence.

Through adopting above-mentioned technical scheme, in order to further improve the frictional force of handle relative hand, the operation of being convenient for is controlled rotatoryly, is equipped with annular groove along length direction equidistance interval in proper order on the handle lateral wall.

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.

By adopting the technical scheme, the guide fixing pipe is arranged on the upper surface of the valve cover and positioned in the supporting cylinder around the valve rod, the sealing pipe is fixedly arranged at the bottom of the inner wall of the guide fixing pipe, the sealing column is fixedly sleeved on the surface of the upper part of the valve rod, the sealing column is inserted in the guide fixing tube and the sealing tube, the sealing column rotates and descends along the guide fixing tube and the sealing tube in the rotating and descending process of the valve rod, and finally, the bottom of the sealing column is propped against the upper surface of the valve cover and is matched with the sealing pipe to form sealing, the valve rod is contacted with the inner wall of the valve cover and the sealing ring gasket in the annular fixing groove through the sealing sleeve to be rotationally extruded, so that the relative sealing performance between the valve rod and the valve cover is ensured, in order to further facilitate the air discharge from the edge between the bottom of the sealing column and the upper surface of the valve cover in the descending process, the diameter of the cross section of the sealing column is gradually increased from bottom to top to form an inverted frustum shape.

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 bottom view of the wrench assembly according to the 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, 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 away from the inner wall of the valve body 1 and the upper end of the lower baffle 6 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 valve rod operating component is arranged at the top of the valve cover 2, the valve rod operating component comprises, the upper end of the valve rod 7 is fixedly connected with a control screw 13, the upper end of the control screw 13 rotatably penetrates through a threaded hole preset on a support plate 12, the upper part of the side wall of the valve rod 7 is circumferentially provided with a ring groove 14, a seal sleeve 15 is fixed in the ring groove 14, the valve rod 7 is rotationally extruded by the seal sleeve 15 and an inner ring of the valve cover 2 facing the valve rod 7 in a mutually contacted manner, the inner ring of the valve cover 2 facing the valve rod 7 is circumferentially provided with a ring fixing groove 31, a seal ring gasket 32 used for matching with the seal sleeve 15 is arranged in the ring fixing groove 31, a hand wheel 21 is fixed on the upper part of the control screw 13 and above the support plate 12, a detachable wrench assembly is arranged on the hand wheel 21, the wrench assembly comprises a fixing ring 22 and a support rod 23, the fixing ring 22 is sleeved on, one end of the support rod 23, which is far away from the fixing ring 22, is provided with a cylindrical handle 24 which is convenient to hold, and the lower surface of the support rod 23 is provided with a clamping assembly for clamping the fixing hand wheel 21.

By adopting the technical scheme, when the valve clack 8 needs to be opened, if the hand wheel 21 is difficult to rotate, the wrench assembly is installed on the hand wheel 21 and comprises the fixing ring 22 and the supporting rod 23, the fixing ring 22 is sleeved at the upper end of the control screw 13, one end of the supporting rod 23 is fixed on the outer side wall of the fixing ring 22, one end of the supporting rod 23, which is far away from the fixing ring 22, is provided with the cylindrical handle 24 which is convenient to hold, the lower surface of the supporting rod 23 is provided with the clamping assembly for clamping and fixing the hand wheel 21, the handle 24 is pulled to rotate the hand wheel 21 to drive the control screw 13 to rotate, the wrench assembly can increase the torsional moment, time and labor are saved during use, the wrench assembly is convenient to open, the control screw 13 is driven to rotate, the lower end of the control screw 13 is fixedly connected, the valve rod 7 and the inner ring of the valve cover 2 facing the valve rod 7 are contacted with each other through the sealing sleeve 15 to be rotationally extruded, so that the relative sealing performance between the valve rod 7 and the valve cover 2 is ensured, compared with the prior art, the internal sealing performance of the stop valve is greatly improved, leakage is prevented, meanwhile, the wrench assembly is used for operating the control hand wheel 21 and the control screw 13 to rotate and lift, so that the stop valve is convenient to open and close, in order to further improve the relative sealing performance between the valve rod 7 and the valve cover 2 in the rotating and lifting process, the inner ring of the valve cover 2 facing the valve rod 7 is circumferentially provided with an annular fixing groove 31, a sealing ring gasket 32 used for being matched with the sealing sleeve 15 is arranged inside the annular fixing groove 31, in the rotating and lifting process of the valve rod 7, the valve rod 7 is contacted with the inner wall of the valve cover 2 and the sealing ring gasket 32 in the annular, the utility model provides a high, the security of leakproofness is good and the stop valve of convenient start-stop switch.

In the embodiment of the present invention, the hand wheel 21 includes an outer wheel and an inner wheel, a plurality of connecting rods are uniformly arranged between the outer wheel and the inner wheel, the inner wheel is fixed on the upper portion of the control screw 13, the clamping assembly includes two first fixing blocks 25 and a second fixing block 26 fixed on the lower surface of the support rod 23, the connecting rod is clamped between the first fixing blocks 25 and is clamped with the outer wall of the outer wheel and the second fixing block 26 at the connecting position of the connecting rod.

Through adopting above-mentioned technical scheme, when valve clack 8 is opened to needs, if adopt hand wheel 21 to be difficult to when rotatory, establish solid fixed ring 22 cover in the screw rod upper end, the connecting rod chucking is between first fixed block 25, with the foreign steamer outer wall and the 26 chucking of second fixed block of connecting rod junction, 23 one end of bracing piece is fixed on solid fixed ring 22 lateral wall, the one end that solid fixed ring 22 was kept away from to bracing piece 23 is provided with the cylindric handle 24 of being convenient for to grip, pull handle 24 after the installation and come rotatory hand wheel 21, it is rotatory to drive control screw 13, the torsional moment can be increased to the spanner subassembly, time saving and labor saving during the use.

In the embodiment of the present invention, the side wall of the handle 24 is provided with annular grooves 27 along the length direction at equal intervals in sequence.

By adopting the technical scheme, in order to further improve the friction force of the handle 24 relative to the hand and facilitate the operation control rotation, the side wall of the handle 24 is sequentially provided with the annular grooves 27 at equal intervals along the length direction.

The utility model discloses in the embodiment, valve gap 2 upper surface just is arranged in supporting barrel 11 and is provided with the fixed pipe 33 of direction around valve rod 7, the bottom fixed mounting of the fixed pipe 33 inner wall of direction has sealed tube 34, valve rod 7 upper portion fixed surface has cup jointed sealed post 35, sealed post 35 is pegged graft inside fixed pipe 33 of direction and sealed tube 34, the cross section diameter of sealed post 35 from bottom to top crescent is the back taper.

By adopting the technical scheme, the guide fixing tube 33 is arranged on the upper surface of the valve cap 2 and positioned in the support cylinder 11 and surrounds the valve rod 7, the sealing tube 34 is fixedly installed at the bottom of the inner wall of the guide fixing tube 33, the sealing column 35 is fixedly sleeved on the upper surface of the valve rod 7, the sealing column 35 is inserted into the guide fixing tube 33 and the sealing tube 34, the sealing column 35 rotates and descends along the guide fixing tube 33 and the sealing tube 34 in the rotating and descending process of the valve rod 7, finally, the bottom of the sealing column 35 is propped against the upper surface of the valve cap 2 to form sealing by matching with the sealing tube 34, the valve rod 7 is in contact with the inner wall of the valve cap 2 and the sealing ring gasket 32 in the annular fixing groove 31 through the sealing sleeve 15 to be rotated and extruded, so as to ensure the relative sealing performance between the valve rod 7 and the valve cap 2, in order to further facilitate the air between, the diameter of the cross section of the sealing column 35 is set to be gradually increased from bottom to top and is in an inverted frustum shape.

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 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 keeping away from valve body (1) inner wall and the upper end that keeps away from valve body (1) inner wall down of baffle (6) are located same horizontal plane in overhead gage (5), there is valve gap (2) at valve body (1) top through bolt fixed mounting, the rotation runs through and is provided with valve rod (7) about valve gap (2), 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 valve rod operating assembly is arranged at the top of the valve cover (2), the valve rod operating assembly comprises a supporting cylinder (11) arranged at the top of the valve cover (2) and a supporting plate (12) covered at the top of the supporting cylinder (11), a control screw rod (13) is fixedly connected to the upper end of the valve rod (7), the upper end of the control screw rod (13) rotatably penetrates through a threaded hole preset in the supporting plate (12), an annular groove (14) is formed in the upper portion of the side wall of the valve rod (7) along the circumferential direction, a sealing sleeve (15) is fixed in the annular groove (14), the valve rod (7) is in contact with an inner ring of the valve cover (2) facing the valve rod (7) through the sealing sleeve (15) to be rotatably extruded, an annular fixing groove (31) is formed in the inner ring of the valve cover (2) facing the valve rod (7) along the circumferential direction, and a sealing ring, control screw (13) upper portion just is located backup pad (12) top and is fixed with hand wheel (21), be provided with detachable wrench assembly on hand wheel (21), wrench assembly is including solid fixed ring (22) and bracing piece (23), gu fixed ring (22) cover is established in control screw (13) upper end, bracing piece (23) one end is fixed on solid fixed ring (22) lateral wall, the one end that solid fixed ring (22) were kept away from in bracing piece (23) is provided with be cylindric handle (24) that is of being convenient for grip, bracing piece (23) lower surface is provided with the chucking subassembly that is used for the fixed hand wheel of chucking (21).

2. A shut-off valve as claimed in claim 1, wherein: hand wheel (21) are including the foreign steamer and interior wheel, a plurality of connecting rods of even setting between foreign steamer and the interior wheel, interior wheel is fixed on control screw (13) upper portion, the chucking subassembly is including fixing two first fixed block (25) and second fixed block (26) at bracing piece (23) lower surface, the connecting rod chucking is between first fixed block (25), with foreign steamer outer wall and second fixed block (26) chucking of connecting rod junction.

3. A shut-off valve as claimed in claim 2, wherein: annular grooves (27) are sequentially arranged on the side wall of the handle (24) at equal intervals along the length direction.

4. A stop valve as claimed in claim 1, 2 or 3, wherein: valve gap (2) upper surface just is located and is provided with fixed pipe (33) of direction around valve rod (7) in supporting barrel (11), the bottom fixed mounting of the fixed pipe (33) inner wall of direction has sealed tube (34), the fixed cover in valve rod (7) upper portion surface has connect sealed post (35), sealed post (35) are pegged graft inside fixed pipe (33) of direction and sealed tube (34), the cross section diameter of sealed post (35) from bottom to top increases gradually and is the back taper platform form.