CN213871383U

CN213871383U - High-stability double-layer corrugated pipe stop valve

Info

Publication number: CN213871383U
Application number: CN202022684814.5U
Authority: CN
Inventors: 戴贤瑞
Original assignee: Shanghai Ruikong Valve Co ltd
Current assignee: Shanghai Ruikong Valve Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-03
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a double-deck bellows stop valve of high stability, including valve body and last valve gap, inside one side of valve body is provided with the feed liquor chamber, the inside opposite side of going up the valve gap is provided with out the sap cavity, it has seted up the valve port to go out between sap cavity and the feed liquor chamber, the inner wall fixedly connected with sealing steel ring of valve port, the top outer wall fixed mounting who goes up the valve gap has thrust ball bearing, thrust ball bearing's inside has cup jointed the rotating turret, the thread groove has been seted up to the inside of rotating turret, the inside threaded connection of thread groove has the valve rod, the outer wall of valve rod slides and has cup jointed sealing nut, and sealing nut's outer wall threaded connection is in the inside of last valve gap. The utility model discloses a double-deck screwed pipe and sealed lid form one person's metal protective screen between fluid medium and atmosphere, ensure the zero leakage of valve rod, and the protection tube avoids double-deck screwed pipe to receive the direct washing away of medium, causes the bellows to break and damage, leads to the medium to leak, improves the stability and the life of stop valve.

Description

High-stability double-layer corrugated pipe stop valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a double-deck bellows stop valve of high stability.

Background

The corrugated pipe stop valve cuts off the communication between fluid medium and atmosphere by welding a layer of metal corrugated pipe between the valve body and the valve rod or between the valve cover and the valve rod, and is a design for ensuring zero leakage of the valve rod. The bellows stop valve is often used in high-risk medium such as corrosive liquids, consequently will realize zero leakage and seal, and is very high to the requirement of leakproofness.

However, the existing corrugated pipe stop valve has only one layer of corrugated pipe, the sealing performance is not strong, and because the corrugated pipe is directly contacted with the fluid medium, when the fluid medium with high solid particle content is transported, solid particles in the fluid medium easily and irregularly impact the corrugated pipe, the corrugated pipe is broken and damaged, and the medium leakage is caused. Therefore, it is desirable to design a high stability double bellows stop valve to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the single-layer corrugated pipe sealing performance existing in the prior art is not strong, the corrugated pipe is easy to break and damage, the defect of medium leakage is caused, and the double-layer corrugated pipe stop valve with high stability is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-stability double-layer corrugated pipe stop valve comprises a valve body and an upper valve cover, wherein a liquid inlet cavity is arranged on one side inside the valve body, a liquid outlet cavity is arranged on the other side inside the upper valve cover, a valve port is formed between the liquid outlet cavity and the liquid inlet cavity, a sealing steel ring is fixedly connected to the inner wall of the valve port, a thrust ball bearing is fixedly mounted on the outer wall of the top of the upper valve cover, a rotating frame is sleeved inside the thrust ball bearing, a threaded groove is formed inside the rotating frame, a valve rod is connected to the inner portion of the threaded groove in a threaded mode, a sealing nut is sleeved on the outer wall of the valve rod in a sliding mode, the outer wall of the sealing nut is connected to the inner portion of the upper valve cover in a threaded mode, a sealing gasket is sleeved on the outer wall of the valve rod in a sliding mode, a sealing cover is sleeved on the outer wall of the valve rod in a sliding mode, a protection pipe is fixedly connected to the outer wall of the bottom of the sealing cover, and a double-layer threaded pipe is sleeved on the outer wall of the valve rod, the top welding of double-deck screwed pipe is at the bottom outer wall of sealed lid, the bottom welding of double-deck screwed pipe is at the outer wall of valve rod, and double-deck screwed pipe is located the inside of protection tube, the end fixed connection of valve rod has the valve clack.

Furthermore, the top outer wall of the valve body is provided with a groove, and the bottom outer wall of the upper valve cover is provided with a convex block matched with the groove.

Furthermore, the limiting plate has been cup jointed to the outer wall of valve rod, the draw-in groove has been seted up at the both ends of limiting plate, the top inner wall of going up the valve gap is provided with the stopper with draw-in groove looks adaptation.

Furthermore, a plurality of mounting screw holes are formed in the outer wall of the top of the valve body and the outer wall of the bottom of the upper valve cover, and mounting bolts are connected to the inner threads of the mounting screw holes.

Furthermore, threaded holes are formed in the outer walls of the two ends of the valve body, the threaded holes are distributed in an annular shape at equal intervals, and the number of the threaded holes is 3-6.

Furthermore, the outer wall thread of the rotating frame is sleeved with a hand wheel, and the top end thread of the rotating frame is sleeved with a screw cap.

The utility model has the advantages that:

1. through the sealed lid and the double-deck screwed pipe that set up, the top welding of double-deck screwed pipe is at the bottom outer wall of sealed lid, and the bottom welding is at the outer wall of connecting at the valve rod, forms one person's metal barrier between fluid medium and atmosphere, ensures the valve rod zero leakage, improves the stability of stop valve.

2. Through the protection tube that sets up, when needs medium circulation, the valve clack is pulled up and is broken away from the valve port, and inside double-deck screwed pipe got into the protection tube, avoided double-deck screwed pipe to receive the direct washing away of medium, caused the bellows to break and damage, lead to the medium to leak, reduce life.

3. Through the sealing nut and the sealing gasket, when the sealing cover or the double-layer threaded pipe is damaged, the sealing gasket plays a double-sealing role, the medium is prevented from leaking from a gap between the valve rod and the upper valve cover, the sealing nut compresses the sealing gasket, the sealing effect is better,

4. through the thrust ball bearing and the limiting plate that set up, thrust ball bearing can alleviate the switching moment of valve, and the person of convenient to use rotates the hand wheel laborsavingly more, and the limiting plate prevents that the valve rod rotation from resulting in double-deck screwed pipe to break, improves stop valve life.

Drawings

Fig. 1 is a schematic structural diagram of a high-stability double-layer bellows stop valve provided by the present invention;

fig. 2 is a schematic front structural view of a high-stability double-layer bellows stop valve provided by the present invention;

fig. 3 is a schematic enlarged front partial view of a high-stability double-layer bellows stop valve according to the present invention;

fig. 4 is the utility model provides a local enlarged schematic diagram of double-deck bellows stop valve A of high stability.

In the figure: the valve comprises a valve body 1, an upper valve cover 2, a thrust ball bearing 3, a rotating frame 4, a thread groove 5, a valve rod 6, a sealing nut 7, a sealing gasket 8, a sealing cover 9, a protection pipe 10, a double-layer thread pipe 11, a valve clack 12, a liquid inlet cavity 13, a liquid outlet cavity 14, a valve port 15, a sealing steel ring 16, a groove 17, a convex block 18, a limiting plate 19, a limiting block 20, a mounting screw hole 21, a mounting bolt 22, a threaded hole 23, a hand wheel 24 and a nut 25.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a high-stability double-layer corrugated pipe stop valve comprises a valve body 1 and an upper valve cover 2, a liquid inlet cavity 13 is arranged on one side inside the valve body 1, a liquid outlet cavity 14 is arranged on the other side inside the upper valve cover 2, a valve port 15 is arranged between the liquid outlet cavity 14 and the liquid inlet cavity 13, a sealing steel ring 16 is fixedly connected to the inner wall of the valve port 15, the sealing steel ring 16 is more attached to a valve flap 12, so that the sealing effect is better, a thrust ball bearing 3 is fixedly installed on the outer wall of the top of the upper valve cover 2, the thrust ball bearing 3 reduces the opening and closing torque of the valve, a rotating frame 4 is sleeved inside the thrust ball bearing 3, a rotating sheet of the rotating frame 4 forces a valve rod 6 to move up and down, a thread groove 5 is formed inside the rotating frame 4, a valve rod 6 is connected to the internal thread of the thread groove 5, a sealing nut 7 is sleeved on the outer wall of the valve rod 6 in a sliding manner, and the outer wall of the sealing nut 7 is connected to the inside the upper valve cover 2 in a threaded manner, sealing nut 7 is used for compressing tightly sealed pad 8, the sealed pad 8 that has cup jointed of valve rod 6's outer wall, when sealed lid 9 or double-deck screwed pipe 11 are damaged, sealed pad 8 plays double seal, sealed lid 9 has been cup jointed in the outer wall slip of valve rod 6, the bottom outer wall fixedly connected with protection tube 10 of sealed lid 9, protection tube 10 plays the guard action to double-deck screwed pipe 11, avoid double-deck screwed pipe 11 to receive the direct scour of medium, double-deck screwed pipe 11 has been cup jointed to valve rod 6's outer wall, the top welding of double-deck screwed pipe 11 is at the bottom outer wall of sealed lid 9, the bottom welding of double-deck screwed pipe 11 is at valve rod 6's outer wall, and double-deck screwed pipe 11 is located the inside of protection tube 10, double-deck screwed pipe 11 improves the sealing performance of valve clack 12, the end fixed connection of valve rod 6 has valve clack 12.

The top outer wall of the valve body 1 is provided with a groove 17, the bottom outer wall of the upper valve cover 2 is provided with a convex block 18 matched with the groove 17, and the convex block 18 is clamped in the groove 17 and used for compressing the sealing cover 9.

Limiting plate 19 has been cup jointed to the outer wall of valve rod 6, and limiting plate 19 prevents that the valve rod rotation from leading to double-deck screwed pipe 11 to break, and the draw-in groove has been seted up at the both ends of limiting plate 19, and the top inner wall of going up valve cap 2 is provided with the stopper 20 with draw-in groove looks adaptation.

A plurality of installation screw 21 has all been seted up to the top outer wall of valve body 1 and the bottom outer wall of last valve cover 2, and the inside threaded connection of installation screw 21 has mounting bolt 22, and mounting bolt 22 links together last valve cover 2 and valve body 1.

Threaded holes 23 which are distributed annularly at equal intervals are formed in the outer walls of the two ends of the valve body 1, the number of the threaded holes 23 is 3-6, and the threaded holes 23 are used for connecting the stop valve to a pipeline.

The hand wheel 24 is sleeved on the outer wall thread of the rotating frame 4, a user drives the rotating frame 4 to rotate by rotating the hand wheel 24, the nut 25 is sleeved on the top end thread of the rotating frame 4, and the nut 25 prevents the hand wheel 24 from falling off from the rotating frame 4.

The working principle of the utility model is as follows: when the medium circulation is stopped, a user drives the rotating frame 4 to rotate through the forward rotating hand wheel 24, the rotating sheet of the rotating frame 4 forces the valve rod 6 to move downwards, the valve rod 6 pushes the valve clack 12 downwards to block the valve port 15, the double-layer threaded pipe 11 improves the sealing performance of the valve clack 12, the sealing steel ring 16 is more attached to the valve clack 12, the sealing effect is better, when the medium circulation is needed, the user drives the rotating frame 4 to rotate through the reverse rotating hand wheel 24, the rotating sheet of the rotating frame 4 forces the valve rod 6 to move upwards, the valve rod 6 upwards pulls the valve clack 12 to be separated from the valve port 15, the double-layer threaded pipe 11 enters the protection pipe 10, and the direct scouring of the medium is avoided.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is familiar with the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered in the protection scope of the present invention.

Claims

1. A high-stability double-layer corrugated pipe stop valve comprises a valve body (1) and an upper valve cover (2), and is characterized in that a liquid inlet cavity (13) is formed in one side of the interior of the valve body (1), a liquid outlet cavity (14) is formed in the other side of the interior of the upper valve cover (2), a valve port (15) is formed between the liquid outlet cavity (14) and the liquid inlet cavity (13), a sealing steel ring (16) is fixedly connected to the inner wall of the valve port (15), a thrust ball bearing (3) is fixedly installed on the outer wall of the top of the upper valve cover (2), a rotating frame (4) is sleeved in the thrust ball bearing (3), a threaded groove (5) is formed in the rotating frame (4), a valve rod (6) is connected to the inner thread of the threaded groove (5), a sealing nut (7) is sleeved on the outer wall of the valve rod (6) in a sliding mode, and the outer wall of the sealing nut (7) is connected to the interior of the upper valve cover (2) in a threaded mode, the outer wall of valve rod (6) has cup jointed sealed pad (8), the outer wall of valve rod (6) slides and has cup jointed sealed lid (9), the bottom outer wall fixedly connected with protection tube (10) of sealed lid (9), the outer wall of valve rod (6) has cup jointed double-deck screwed pipe (11), the top welding of double-deck screwed pipe (11) is at the bottom outer wall of sealed lid (9), the bottom welding of double-deck screwed pipe (11) is at the outer wall of connecting at valve rod (6), and double-deck screwed pipe (11) are located the inside of protection tube (10), the end fixed connection of valve rod (6) has valve clack (12).

2. The high-stability double-layer corrugated pipe stop valve as claimed in claim 1, wherein a groove (17) is formed in the outer wall of the top of the valve body (1), and a protrusion (18) matched with the groove (17) is formed in the outer wall of the bottom of the upper valve cover (2).

3. The high-stability double-layer corrugated pipe stop valve according to claim 1, wherein a limiting plate (19) is sleeved on the outer wall of the valve rod (6), clamping grooves are formed in two ends of the limiting plate (19), and a limiting block (20) matched with the clamping grooves is arranged on the inner wall of the top of the upper valve cover (2).

4. The high-stability double-layer corrugated pipe stop valve as claimed in claim 1, wherein a plurality of mounting screw holes (21) are formed in the outer wall of the top of the valve body (1) and the outer wall of the bottom of the upper valve cover (2), and mounting bolts (22) are connected to the mounting screw holes (21) through threads.

5. The high-stability double-layer corrugated pipe stop valve as claimed in claim 1, wherein threaded holes (23) are formed in outer walls of two ends of the valve body (1) and are distributed annularly at equal intervals, and the number of the threaded holes (23) is 3-6.

6. The high-stability double-layer corrugated pipe stop valve is characterized in that a hand wheel (24) is sleeved on the outer wall of the rotating frame (4) in a threaded mode, and a nut (25) is sleeved on the top end of the rotating frame (4) in a threaded mode.