CN211624201U

CN211624201U - Improved non-leakage stop valve

Info

Publication number: CN211624201U
Application number: CN202020223440.4U
Authority: CN
Inventors: 陈继松
Original assignee: Shanghai Shangzhou Valve Manufacture Co ltd
Current assignee: Shanghai Shangzhou Valve Manufacture Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-10-02
Anticipated expiration: 2030-02-28

Abstract

The utility model discloses an improved non-leakage stop valve, the upper surface of a valve seat is provided with a filler cover, the filler cover is internally provided with filler, the filler cover is provided with an upper valve cover, the bottom of the upper valve cover is arranged in the filler cover and is connected with the upper surface of the filler, the top end of the upper valve cover is provided with a threaded hole part, the bottom end of a valve plug is provided with a pressing plate, a sealing ring is arranged between the outer side of the pressing plate and the inner side of the bottom end of the valve plug, the outer side of the valve plug is provided with a stainless steel corrugated pipe, the top end of the stainless steel corrugated pipe is fixedly connected with the bottom end of the filler cover, the bottom end of the stainless steel corrugated pipe is movably connected with the, set up integral type bellows type's filler in the lid that packs, the outside stainless steel bellows that sets up of rethread valve plug realizes double seal, guarantees that valve rod department can not take place the condition of leaking outward.

Description

Improved non-leakage stop valve

Technical Field

The utility model relates to the field of machinary, especially, relate to the valve, specifically be a modified does not have and leaks stop valve.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing 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.

After the conventional stop valve is used for a period of time, due to factors such as friction, leakage is easy to occur at the threaded valve rod, so that the use is affected, and therefore, an improved technology is urgently needed to solve the problem existing in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modified does not have leakage stop valve sets up integral type bellows type filler in the lid that packs, and the outside stainless steel bellows that sets up of rethread valve plug realizes double seal, guarantees that valve rod department can not take place the condition of leaking outward to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an improved non-leakage stop valve comprises a valve seat and a valve plug;

the water inlet channel is arranged at one end inside the valve seat, the water outlet channel is arranged at the other end inside the valve seat, the water inlet channel and the water outlet channel are communicated with each other, the upper surface of the valve seat is provided with a packing cover, packing is arranged inside the packing cover, the packing cover is provided with an upper valve cover, the bottom of the upper valve cover is arranged in the packing cover and is connected with the upper surface of the packing, and the top end of the upper valve cover is provided with a threaded hole piece;

the valve plug, the valve plug bottom is provided with the clamp plate, be provided with the sealing ring between the inboard of clamp plate outside and valve plug bottom, the sealing ring cooperatees with water inlet channel and exhalant canal intercommunication department, the valve plug outside is provided with nonrust corrugated steel pipe, nonrust corrugated steel pipe top is fixed continuous with the filler lid bottom, nonrust corrugated steel pipe bottom links to each other with valve plug bottom upper surface activity, the valve plug top links to each other with the connecting seat, connecting seat lower surface and upper surface all are provided with thrust ball bearing, are located the connecting seat upper surface thrust ball bearing links to each other with the screw rod bottom, the screw rod links to each other with the screw hole spare, the screw rod top is provided.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, corrugated stainless steel pipe bottom still is provided with seal ring for the sealing of bottom, thereby guarantee the leakproofness.

Preferably, the utility model provides a pair of modified does not have and leaks stop valve, wherein, valve plug upper end position tubular structure, the valve plug bottom is the disc structure, the internal diameter of valve plug upper end is unanimous with the external diameter of connecting seat, the valve plug upper end links to each other with the connecting seat through the bolt, open flutedly under the valve plug bottom, the valve plug is located intermediate position in the recess and is provided with the screw thread post, open the upper surface of valve plug bottom has ring groove, the ring groove of the upper surface of valve plug bottom cooperatees with the seal ring of stainless steel corrugated pipe bottom, when guaranteeing to seal, still convenient to detach.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, the clamp plate intermediate position is opened there is the through-hole, the through-hole of clamp plate intermediate position matches with the screw thread post of valve plug bottom and fixes through the nut for fixed seal ring.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, the inside packing groove that is provided with in packing lid upper end, pack and set up in the packing inslot.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, the external diameter of going up the valve gap bottom is unanimous with the internal diameter in filler groove, the internal diameter of going up the valve gap bottom is unanimous and with the external diameter phase-match of valve plug upper end with the internal diameter of packing, and stopper post structure and connected mode provide more even lasting sealing force than conventional valve gland.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, the thrust ball bearing that connecting seat lower surface and upper surface set up all passes through bolt and nut fixed position to through bolt and nut and screw rod bottom swing joint, thereby realize that the valve plug does not rotate along with the screw rod, reduce friction torque.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, the sealing ring lower surface still is provided with protruding ring for it is sealed when closing.

Preferably, the utility model provides a pair of modified does not have leakage stop valve, wherein, it all adopts LPPR sealing material to pack and sealing ring, pack and adopt integral type bellows type, have good leakproofness and good resilience.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses it is rational in infrastructure, set up integral type bellows type's filler in the lid that packs, the outside stainless steel corrugated pipe that sets up of rethread valve plug realizes double seal, guarantees that valve rod department can not take place the condition of leaking outward.

(2) Stainless steel corrugated pipe bottom sets up seal ring and cooperatees with the draw-in groove of the upper surface of valve plug bottom disc structure, adopts non-fixed connection's mode to seal, still is convenient for install and dismantle when sealing performance obtains guaranteeing.

(3) The screw rod bottom is connected with the connecting seat through the thrust ball bearing, and the connecting seat is being connected with the valve plug top through the bolt, and the in-process that makes valve plug vertical lift is opened and close moment and is little to the valve plug vertical lift in-process can not take place the rotation, has reduced friction torque greatly.

(4) Thereby the upper valve cover bottom inserts in the gland packing to fixed packing, upper valve cover bottom adopts the plunger structure, provides more even lasting sealing force than conventional valve gland.

(5) The bottom of the valve plug is fixed with the sealing ring through the pressing plate, and the pressing plate is fixed through the matching of the nut and the threaded column, so that the sealing ring is convenient to replace.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the bottom of the valve plug;

in the figure: the valve seat 1, the valve plug 2, the water inlet channel 3, the water outlet channel 4, the filler cover 5, the filler 6, the upper valve cover 7, the threaded hole piece 8, the pressing plate 9, the sealing ring 10, the stainless steel corrugated pipe 11, the connecting seat 12, the thrust ball bearing 13, the screw 14, the hand disc 15, the sealing washer 16, the threaded column 17 and the bulge ring 18.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, 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 work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an improved non-leakage stop valve comprises a valve seat 1 and a valve plug 2; one end of the inside of the valve seat 1 is provided with a water inlet channel 3, the other end of the inside of the valve seat 1 is provided with a water outlet channel 4, the water inlet channel 3 is communicated with the water outlet channel 4, the upper surface of the valve seat 1 is provided with a packing cover 5, the inside of the packing cover 5 is provided with a packing 6, the inside of the upper end of the packing cover 5 is provided with a packing groove, the packing 6 is arranged in the packing groove, the packing cover 5 is provided with an upper valve cover 7, the bottom of the upper valve cover 7 is arranged in the packing cover 5 and is connected with the upper surface of the packing 6, the outer diameter of the bottom end of the upper valve cover 7 is consistent with the inner diameter of the packing groove, the inner diameter of the bottom end of the upper valve cover; the bottom end of the valve plug 2 is provided with a pressing plate 9, a sealing ring 10 is arranged between the outer side of the pressing plate 9 and the inner side of the bottom end of the valve plug 2, the sealing ring 10 is matched with the communication part of the water inlet channel 3 and the water outlet channel 4, the lower surface of the sealing ring 10 is also provided with a convex ring 18, the packing 6 and the sealing ring 10 are both made of LPPR sealing materials, the packing 6 adopts an integrated corrugated pipe type, the outer side of the valve plug 2 is provided with a stainless steel corrugated pipe 11, the top end of the stainless steel corrugated pipe 11 is fixedly connected with the bottom end of a packing cover 5, the bottom end of the stainless steel corrugated pipe 11 is movably connected with the upper surface of the bottom of the valve plug 2, the bottom of the stainless steel corrugated pipe 11 is also provided with a sealing washer 16, the upper end of the valve plug 2 is of a cylindrical structure, the bottom of the valve plug 2, the upper surface of 2 bottoms of valve plug is opened there is ring groove, the ring groove of the upper surface of 2 bottoms of valve plug cooperatees with seal ring 16 of 11 bottoms of stainless steel bellows, clamp plate 9 intermediate position opens the through-hole, the through-hole of clamp plate 9 intermediate position matches with the screw thread post 17 of 2 bottoms of valve plug and is fixed through the nut, 2 tops of valve plug link to each other with connecting seat 12, connecting seat 12 lower surface and upper surface all are provided with thrust ball bearing 13, the thrust ball bearing 13 that is located connecting seat 12 upper surface links to each other with 14 bottoms of screw rod, the thrust ball bearing 13 that connecting seat 12 lower surface and upper surface set up all passes through bolt and nut fixed position, and through bolt and nut and 14 bottom swing joint of screw rod, screw rod 14 links to each other with screw hole spare.

The installation method and the use principle are as follows: a screw 14 penetrates through a threaded hole piece 8 of an upper valve cover 7, the bottom of the screw 14 is respectively fixed with a thrust ball bearing 13 on the upper surface and the lower surface of a connecting seat 12 through bolts and nuts, a filler 6 is plugged into a filler groove in the filler cover 5, the top end of a valve plug 2 penetrates through the filler cover 5 and the filler 6, at the moment, a sealing washer 16 at the bottom of a stainless steel corrugated pipe 11 is inserted into a clamping groove on the upper surface of a disc structure at the bottom of the valve plug 2, then the connecting seat 12 is connected with a cylindrical structure at the top end of the valve plug 2 through bolts, the bottom of the upper valve cover 7 is inserted into a seasoning groove and is connected with the upper surface of the filler cover 5 through bolts, so that the filler 6 is fixed, a sealing ring 10 is placed into a groove on the lower surface of the valve plug 2, a pressing plate 9 is inserted into a threaded column 17 and presses the sealing ring 10, the nuts are screwed, the valve plug 2 is lifted, the packing cover 5 is connected with the upper surface of the valve seat 1 through a bolt, the hand disc 15 is rotated, the valve plug 2 is lowered until the lowest end position is reached, and the assembly is completed; the bottom of the stainless steel corrugated pipe 11 is provided with a sealing gasket 16 which is matched with a clamping groove on the upper surface of a disc-shaped structure at the bottom of the valve plug 2, and the stainless steel corrugated pipe is sealed in a non-fixed connection mode, so that the sealing performance is ensured, and the stainless steel corrugated pipe is convenient to mount and dismount; the bottom end of the screw rod 14 is connected with the connecting seat 12 through the thrust ball bearing 13, and the connecting seat 12 is connected with the top end of the valve plug 2 through a bolt, so that the opening and closing torque is small in the vertical lifting process of the valve plug 2, and the valve plug 2 cannot rotate in the vertical lifting process, so that the friction torque is greatly reduced; the bottom of the upper valve cover 7 is inserted into the packing cover 5 so as to fix the packing 6, and the bottom of the upper valve cover 7 adopts a plunger structure, so that more uniform and lasting sealing force is provided compared with the conventional valve gland; the bottom of the valve plug 2 is fixed with the sealing ring 10 through the pressing plate 9, and the pressing plate 9 is fixed through the matching of a nut and a threaded column 17, so that the sealing ring 10 is convenient to replace.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An improved no-leakage stop valve, characterized in that: comprises a valve seat (1) and a valve plug (2);

the water inlet valve comprises a valve seat (1), wherein a water inlet channel (3) is arranged at one end inside the valve seat (1), a water outlet channel (4) is arranged at the other end inside the valve seat (1), the water inlet channel (3) is communicated with the water outlet channel (4), a packing cover (5) is arranged on the upper surface of the valve seat (1), a packing (6) is arranged inside the packing cover (5), an upper valve cover (7) is arranged on the packing cover (5), the bottom of the upper valve cover (7) is arranged in the packing cover (5) and connected with the upper surface of the packing (6), and a threaded hole part (8) is arranged at the top end of the upper valve cover (7);

valve plug (2), clamp plate (9) is provided with to valve plug (2) bottom, be provided with sealing ring (10) between the inboard of clamp plate (9) outside and valve plug (2) bottom, sealing ring (10) cooperatees with inhalant canal (3) and exhalant canal (4) intercommunication department, the valve plug (2) outside is provided with corrugated stainless steel pipe (11), corrugated stainless steel pipe (11) top is fixed with the bottom end of packing lid (5) and is linked to each other, corrugated stainless steel pipe (11) bottom links to each other with valve plug (2) bottom upper surface activity, valve plug (2) top links to each other with connecting seat (12), connecting seat (12) lower surface and upper surface all are provided with thrust ball bearing (13), lie in connecting seat (12) upper surface thrust ball bearing (13) link to each other with screw rod (14) bottom, screw rod (14) link to each other with screw hole spare (8), the top end of the screw rod (14) is provided with a hand disc (15).

2. An improved leak free shut off valve as defined in claim 1 wherein: and a sealing gasket (16) is also arranged at the bottom of the stainless steel corrugated pipe (11).

3. An improved leak free shut off valve as defined in claim 1 wherein: valve plug (2) upper end position tubular structure, valve plug (2) bottom is the disc structure, the internal diameter of valve plug (2) upper end is unanimous with the external diameter of connecting seat (12), valve plug (2) upper end links to each other with connecting seat (12) through the bolt, open valve plug (2) bottom lower surface has the recess, valve plug (2) are located intermediate position in the recess and are provided with threaded column (17), open the upper surface of valve plug (2) bottom has ring groove, the ring groove of the upper surface of valve plug (2) bottom cooperatees with seal ring (16) of nonrust corrugated steel pipe (11) bottom.

4. An improved leak free shut off valve as defined in claim 1 wherein: the middle position of the pressing plate (9) is provided with a through hole, and the through hole in the middle position of the pressing plate (9) is matched with a threaded column (17) at the bottom of the valve plug (2) and fixed through a nut.

5. An improved leak free shut off valve as defined in claim 1 wherein: the packing device is characterized in that a packing groove is formed in the upper end of the packing cover (5), and the packing (6) is arranged in the packing groove.

6. An improved leak free shut off valve as defined in claim 1 wherein: the outer diameter of the bottom end of the upper valve cover (7) is consistent with the inner diameter of the packing groove, and the inner diameter of the bottom end of the upper valve cover (7) is consistent with the inner diameter of the packing and matched with the outer diameter of the upper end of the valve plug (2).

7. An improved leak free shut off valve as defined in claim 1 wherein: the thrust ball bearings (13) arranged on the lower surface and the upper surface of the connecting seat (12) are fixed in position through bolts and nuts and are movably connected with the bottoms of the screw rods (14) through the bolts and nuts.

8. An improved leak free shut off valve as defined in claim 1 wherein: the lower surface of the sealing ring (10) is also provided with a raised ring (18).

9. An improved leak free shut off valve as defined in claim 1 wherein: the packing (6) and the sealing ring (10) are made of LPPR sealing materials, and the packing (6) is of an integrated corrugated pipe type.