CN211117614U

CN211117614U - Hard seal flange stop valve

Info

Publication number: CN211117614U
Application number: CN201921550867.9U
Authority: CN
Inventors: 林坚坚; 林志成
Original assignee: Zhejiang Shunlin Valve Co ltd
Current assignee: Zhejiang Shunlin Valve Co ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-07-28
Anticipated expiration: 2029-09-18

Abstract

The utility model relates to the technical field of valves, and a hard seal flange stop valve is disclosed, which comprises a valve body, the inside fixed mounting of valve body has the disk seat, the top fixed mounting of disk seat has the valve clack, valve clack fixed mounting is on the connecting rod, connecting rod and valve rod fixed connection, the top fixed mounting of valve rod has the hand wheel, the valve rod rotates with valve-stem nut to be connected, valve-stem nut's below fixed mounting has the clamp plate that packs, the clamp plate that packs is by movable joint bolt fixed connection with the valve gap, valve-stem nut's both sides fixedly connected with screwed support. The utility model discloses a be equipped with corrosion-resistant composite bed on disk seat, the sealed face of valve clack for the sealed face of disk seat, valve clack has better corrosion resistance, and the medium directly erodees the sealed face of disk seat and valve clack when avoiding opening and close, causes to erode and wearing and tearing sealed face, avoids the medium to leak, has improved the leakproofness and the life of stop valve moreover.

Description

Hard seal flange stop valve

Technical Field

The utility model relates to the technical field of valves, specifically be a hard seal flange stop valve.

Background

The valve is widely used in daily life and in work of people, the valve is a control component in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, the existing valves are various in types and different in functions, the valves can be divided into gas valves, liquid valves and the like, and the valve is suitable for different fields.

The main defects of the existing stop valve are that the medium directly erodes the valve seat and the valve clack sealing surface when the stop valve is opened and closed, the scouring and the abrasion of the sealing surface are large, a sealing ring is generally arranged between a valve rod and a valve cover of the valve rod sealing device, the medium is easy to leak, the sealing performance is poor, and the corrosion resistance is an important performance in the stop valve, so that the valve clack and the valve seat sealing surface of the stop valve are influenced by the use of the stop valve, when a pipe network for conveying corrosive medium is used, the valve clack and the valve seat sealing surface of the stop valve are corroded by the corrosive medium and are quickly abraded, the sealing effect is influenced, and.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides a hard seal flange stop valve possesses stand wear and tear, and the problem of mentioning in the above-mentioned background art has been solved to the strong advantage of leakproofness.

The utility model provides a following technical scheme: a hard sealing flange stop valve comprises a valve body, wherein a valve seat is fixedly arranged inside the valve body, a valve clack is fixedly arranged above the valve seat, the valve clack is fixedly arranged on a connecting rod, the connecting rod is fixedly connected with a valve rod, a hand wheel is fixedly arranged at the top of the valve rod, the valve rod is rotatably connected with a valve rod nut, a packing press plate is fixedly arranged below the valve rod nut, the packing press plate is fixedly connected with a valve cover through a movable joint bolt, threaded supports are fixedly connected to two sides of the valve rod nut, the threaded supports are fixedly connected with a valve cover, the valve cover is fixedly arranged in the middle of the valve body, a packing is fixedly arranged between the valve cover and the valve rod, a packing press sleeve is fixedly arranged above the packing, a sealing ring is fixedly arranged below the packing, a gasket is fixedly arranged on one side of the sealing ring, and, the valve body is fixedly connected with the valve cover through a valve cover bolt.

Preferably, the upper part of the valve rod is provided with threads, and the valve rod is in threaded connection with the valve rod nut.

And carefully selecting, wherein the valve cover is connected with a valve body flange, and the number of the flange holes can be changed.

The hand wheel is an umbrella-shaped hand wheel, and the hand wheel can be changed into a gear or electric operation or pneumatic or hydraulic mode.

The valve is characterized in that a salient point is arranged at the bottom of the valve clack, the valve clack is movably connected with the valve seat, and a groove corresponding to the salient point is formed in the upper surface of the valve seat.

And carefully selecting, wherein the contact surfaces of the valve clack and the valve seat are both provided with wear-resistant layers.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model discloses a be equipped with corrosion-resistant composite bed on disk seat, the sealed face of valve clack for the sealed face of disk seat, valve clack has better corrosion resistance, and the medium directly erodees the sealed face of disk seat and valve clack when avoiding opening and close, causes to erode and wearing and tearing sealed face, avoids the medium to leak, has improved the leakproofness and the life of stop valve moreover.

2. The utility model discloses a bottom surface at the valve clack is equipped with the bump to set up on the surface of disk seat with the valve clack on bump assorted recess, increased the compactness of valve clack and disk seat, make the valve clack closely laminate with the disk seat in the use of valve, avoided the medium to reveal.

Drawings

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

fig. 2 is a schematic view of the valve flap of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve flap; 4. a valve stem; 5. a valve seat; 6. pressing and sleeving the filler; 7. a gasket; 8. a bonnet bolt; 9. a filler; 10. a valve stem nut; 11. a hand wheel; 12. a seal ring; 13. an eye bolt; 14. a threaded support; 15. a connecting rod; 16. and (5) filling and pressing a plate.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-2, a hard seal flange stop valve comprises a valve body 1, a valve seat 5 is fixedly installed inside the valve body 1, a valve flap 3 is fixedly installed above the valve seat 5, a salient point is arranged at the bottom of the valve flap 3, the valve flap 3 is movably connected with the valve seat 5, a groove corresponding to the salient point is arranged on the upper surface of the valve seat 5, a salient point is arranged on the bottom surface of the valve flap 3, a groove matched with the salient point on the valve flap 3 is arranged on the surface of the valve seat 5, the tightness between the valve flap 3 and the valve seat 5 is increased, the valve flap 3 is tightly attached to the valve seat 5 in the using process of the valve, medium leakage is avoided, a wear-resistant layer is arranged on the contact surface of the valve flap 3 and the valve seat 5, a corrosion-resistant composite layer is arranged on the sealing surfaces of the valve seat 5 and the valve flap 3, the sealing surfaces of the valve seat, the valve comprises a valve rod, a valve clack 3, a connecting rod 15, a valve rod 4, a connecting rod, a valve rod nut 10, a valve rod 4, a valve rod nut 10, a hand wheel 11, a packing pressing plate 16, a packing 9 and a valve cover 2, wherein the sealing surface is washed and abraded, the medium is prevented from leaking, the sealing performance and the service life of the stop valve are improved, the valve clack 3 is fixedly installed on the connecting rod 15, the connecting rod 15 is fixedly connected with the valve rod 4, the upper portion of the valve rod 4 is provided with threads, the valve rod 4 is in threaded connection with the valve rod nut 10, the hand wheel 11 is in gear or electric operation or pneumatic or hydraulic operation, the hand wheel 11 is simple and convenient to directly operate, the gears and the electric operation are used in a plurality of scenes, the pneumatic and hydraulic operations are more labor-saving, the valve rod 4 is rotatably connected with the valve rod nut,

valve gap

2 and 1 flange joint of valve body, the flange hole number can change, the both sides fixedly connected with screw thread support 14 of valve-stem nut 10, screw thread support 14 and valve gap 2 fixed connection, valve gap 2 fixed mounting is at the middle part of valve body 1, the middle fixed mounting of valve gap 2 and valve rod 4 has packing 9, the top fixed mounting of packing 9 has packing to press cover 6, the below fixed mounting of packing 9 has sealing washer 12, and one side fixed mounting of sealing washer 12 has gasket 7, gasket 7 is convenient for reduce the space between valve body 1 and the valve gap 2, be convenient for the installation between valve body 1 and the valve gap 2, gasket 7 fixed connection is between valve body 1 and valve gap 2, valve body 1 and valve gap 2 are by valve gap bolt 8 fixed connection.

The working principle is as follows: during the use, install the stop valve at required pipeline kneck, downwards rotate hand wheel 11, hand wheel 11 drives valve rod 4 and moves down in valve rod nut 10's inside, and valve rod 4 drives connecting rod 15 downstream, and connecting rod 15 promotes valve clack 3 downstream, and valve clack 3 seals with the inboard space of disk seat 5, intercepts liquid, prevents that it from flowing through, can.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Simultaneously in the utility model discloses an in the drawing, fill the pattern and just do not do any other injecions for distinguishing the picture layer.

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. The utility model provides a hard seal flange stop valve, includes valve body (1), its characterized in that: the valve comprises a valve body (1), a valve seat (5) is fixedly mounted inside the valve body (1), a valve clack (3) is fixedly mounted above the valve seat (5), the valve clack (3) is fixedly mounted on a connecting rod (15), the connecting rod (15) is fixedly connected with a valve rod (4), a hand wheel (11) is fixedly mounted at the top of the valve rod (4), the valve rod (4) is rotatably connected with a valve rod nut (10), a packing pressing plate (16) is fixedly mounted below the valve rod nut (10), the packing pressing plate (16) is fixedly connected with a valve cover (2) through a movable joint bolt (13), threaded supports (14) are fixedly connected to two sides of the valve rod nut (10), the threaded supports (14) are fixedly connected with the valve cover (2), the valve cover (2) is fixedly mounted in the middle of the valve body (1), and a packing (9) is fixedly mounted between the valve cover (2) and the valve rod, the packing pressing sleeve (6) is fixedly installed above the packing (9), a sealing ring (12) is fixedly installed below the packing (9), a gasket (7) is fixedly installed on one side of the sealing ring (12), the gasket (7) is fixedly connected between the valve body (1) and the valve cover (2), the valve body (1) and the valve cover (2) are fixedly connected through a valve cover bolt (8), threads are formed in the upper portion of the valve rod (4), the valve rod (4) is in threaded connection with a valve rod nut (10), the valve cover (2) is in flange connection with the valve body (1), the number of flange holes can be changed, the hand wheel (11) is an umbrella-shaped hand wheel, the hand wheel (11) can be changed into a gear or electric operation or pneumatic or hydraulic mode, salient points are arranged at the bottom of the valve clack (3), the valve clack (3) is movably connected with the valve seat (5), grooves corresponding to the salient points are formed in the upper surface of the valve seat (5, and the contact surfaces of the valve clack (3) and the valve seat (5) are provided with wear-resistant layers.