CN111765253A

CN111765253A - Corrugated pipe stop valve with double-valve-clack structure

Info

Publication number: CN111765253A
Application number: CN202010546733.0A
Authority: CN
Inventors: 时永宾
Original assignee: Henan Taoen Machinery Co ltd
Current assignee: Henan Taoen Machinery Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-10-13

Abstract

The invention relates to the technical field of stop valves, in particular to a corrugated pipe stop valve with a double-valve-clack structure, which comprises a valve body, wherein a valve clack is arranged inside the valve body, an auxiliary valve clack mechanism is arranged on the upper surface of the valve clack, a lower valve rod is arranged inside the auxiliary valve clack mechanism, a lower connecting ring is welded on the surface of the lower valve rod, the upper surface of the valve body is connected with a valve cover through a bolt, the corrugated pipe is welded on the end surfaces of the upper connecting ring and the lower connecting ring, and a connecting and sealing mechanism. This bivalve lamella structure bellows stop valve, when flowing in the valve body is inside through the medium, the medium flow direction is for high business turn over low play, when operating personnel rotated the hand wheel and opens the valve, vice valve clack opens earlier, vice valve clack opens the back, inside pressure can be along with carrying out the pressure release, the runner both sides pressure differential after the pressure release reduces, and the main valve clack is just very easy to be opened to fine solution a lot of stop valves of big specification are difficult to the condition of opening and closing at present.

Description

Corrugated pipe stop valve with double-valve-clack structure

Technical Field

The invention relates to the technical field of stop valves, in particular to a corrugated pipe stop valve with a double-valve-clack structure.

Background

The stop valve, also called stop valve, is the most widely used valve, it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also suitable for high pressure, the closing principle of the stop valve is that the valve rod pressure is relied on to make the sealing surface of the valve clack and the sealing surface of the valve seat tightly joint, and the medium circulation is prevented.

And at present, many stop valves with larger specifications are not easy to open and close because of the higher pressure of the medium in the use process, so that operators can open and close the valves very easily, and the situation that the valves cannot be closed tightly can occur. In view of this, we propose a bellows shut-off valve of double-flap structure.

Disclosure of Invention

The present invention is directed to a bellows stop valve with a dual-flap structure, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a bivalve lamella structure bellows stop valve, includes the valve body, the inside of valve body is provided with the valve clack, the top of valve clack is provided with vice valve clack mechanism, the inside of vice valve clack mechanism is provided with lower valve rod, the skin weld of lower valve rod has lower go-between, there is the valve gap upper surface of valve body through bolted connection, the bottom welding of valve gap has last go-between, go up the welding of go-between and lower go-between has the bellows, the valve rod runs through the bellows inner bore down, the inside of valve gap is provided with connects sealing mechanism.

As a preferred embodiment, a graphite +304 wound gasket is sleeved between the valve body and the valve cover, the valve cover stuffing box is provided with stuffing, and the surface of the stuffing is in contact with the lower valve rod.

As a preferred embodiment, the connection sealing mechanism comprises an upper valve rod, the bottom end of the upper valve rod is connected with a connecting block through a locking bolt, the top end of the lower valve rod is clamped inside the connecting block, the inner path of the valve cover is in threaded connection with a valve rod nut, and the surface of the valve rod nut is fixedly connected with the inside of the valve cover through a set screw.

As a preferred embodiment, the valve cover stuffing box is connected with a stuffing pressing sleeve in a threaded manner, a stuffing pad is arranged at the bottom of the stuffing pressing sleeve and located above stuffing, and the top end of the upper valve rod penetrates through the inside of the valve rod nut and is clamped with a hand wheel.

As a preferred embodiment, the valve core mechanism includes a valve flap cover, an auxiliary valve flap is connected to the external thread of the valve flap cover, a split ring is clamped inside the auxiliary valve flap, and the split ring is located at the bottom end of the lower valve rod.

In a preferred embodiment, the lower surface of the lower valve rod is in threaded connection with a split nut, the lower end of the auxiliary valve clack is inserted with a split pin, and the split nut and the split pin are both located below the valve clack.

Compared with the prior art, the invention has the beneficial effects that:

1. this bivalve lamella structure bellows stop valve, when flowing in the valve body is inside through the medium, the medium flow direction is for high business turn over low play, when operating personnel rotated the hand wheel and opens the valve, vice valve clack opens earlier, vice valve clack opens the back, inside pressure can be along with carrying out the pressure release, the runner both sides pressure differential after the pressure release reduces, and the main valve clack is just very easy to open, labour saving and time saving to fine solution a lot of big specification stop valves are difficult to the condition of opening and closing at present.

2. This bivalve lamella structure bellows stop valve, and the sealed mode of main valve lamella and vice valve lamella adopts the awl sealed, and what also adopted between main valve lamella and the valve body is that the awl is sealed simultaneously, and the sealed mode of awl can improve the effect of sealed in-process, advances the design of bellows simultaneously, and bellows and valve rod use are seal weld, and the inside sealed effect of assurance that can be fine prevents that the medium from revealing from the valve rod, improves the sealing performance of whole device.

Drawings

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

FIG. 2 is a schematic view of the connecting seal mechanism of the present invention;

fig. 3 is a schematic view of the valve core mechanism of the present invention.

In the figure: 1. a valve body; 2. a valve flap; 3. a lower connecting ring; 4. a bellows; 5. a lower valve stem; 6. a rubber gasket; 7. an upper connecting ring; 8. connecting a sealing mechanism; 81. tightening the screw; 82. an upper valve stem; 83. connecting blocks; 84. locking the bolt; 85. pressing and sleeving the filler; 86. a filler pad; 87. a valve stem nut; 9. a hand wheel; 10. a sub valve mechanism; 101. a valve flap cover; 102. the circular rings are split; 103. an auxiliary valve flap; 104. a split nut; 105. a cotter pin; 11. a filler; 12. and a valve cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, a technical solution provided by the present invention is:

the utility model provides a bivalve lamella structure bellows stop valve, including valve body 1, the inside of valve body 1 is provided with valve clack 2, the upper surface of valve clack 2 is provided with vice valve clack mechanism 10, the inside of valve core mechanism 10 is provided with lower valve rod 5, lower valve rod 5 welds has lower go-between 3, there is valve gap 12 valve body 1's upper surface through bolted connection, the bottom welding of valve gap 12 has last go-between 7, go up the welding of go-between 7 and lower go-between 3 and have bellows 4, lower valve rod 5 runs through 4 holes of bellows, the inside of valve gap 12 is provided with connects sealing mechanism 8.

In this embodiment, a graphite +304 wound gasket 6 is sleeved between the valve body 1 and the valve cover 12, the packing 11 is placed inside the packing box of the valve cover 12, and the surface of the packing 11 and the lower valve rod 5 are in contact with each other.

Further, connect sealing mechanism 8 including last valve rod 82, the bottom of going up valve rod 82 is connected with connecting block 83 through locking bolt 84, the top joint of lower valve rod 5 is in the inside of connecting block 83, the inside way threaded connection of valve gap 12 has valve rod nut 87, the inside fixed connection of holding screw 81 and valve gap 12 is passed through on valve rod nut 87's surface, it is rotatory to drive valve rod 82 through hand wheel 9, valve rod 82 goes up and down through the vice realization of the screw thread of last valve rod 82 and valve rod nut 87, valve rod 5 down is driven through connecting block 83, realize the switch bivalve clack.

Furthermore, the valve cover is internally connected with a packing pressing sleeve 85 in a threaded manner, a packing pad 86 is sleeved at the bottom of the packing pressing sleeve 85 and is positioned above the packing 11, the top end of the upper valve rod 82 penetrates through the inside of the valve rod nut 87 and is clamped with the hand wheel 9, and the packing pressing sleeve 85 and the packing 11 are in press fit sealing, so that the sealing effect inside the packing pressing sleeve is further improved.

In addition, vice valve clack mechanism 10 is including valve clack lid 101, the threaded connection of valve clack lid 101 has vice valve clack 103, the inside joint of vice valve clack 103 has run from opposite directions ring 102, run from opposite directions the bottom that ring 102 is located lower valve rod 5, when flowing in valve body 1 inside through the medium, vice valve clack 103 opens earlier, vice valve clack 103 opens the back, inside pressure can be along with carrying out the pressure release, the runner both sides pressure differential after the pressure release reduces, at this moment rotating hand wheel 9 alright open main valve clack 2 with relaxing, thereby can be very convenient carry out the opening to the valve.

In addition, the lower end of the auxiliary valve flap 103 is connected with an open nut 104 through threads, the lower end of the auxiliary valve flap 103 is connected with an open pin 105 in an inserting mode, the open nut 104 and the open pin 105 are both located below the valve flap 2, the auxiliary valve flap 103 is connected with the lower valve rod 5 in a clamping mode through the valve flap cover 101 and the split ring 102, the auxiliary valve flap 103 drives the main valve flap 2 to open and close through the open nut 104 and the open pin 105, and therefore the overall opening and closing state of the valve is controlled.

When the double-valve-flap bellows stop valve is used, when a medium flows in the valve body 1, the medium flow direction is high, the medium flows low and high, when an operator opens the valve, the auxiliary valve flap 103 is opened firstly, after the auxiliary valve flap 103 is opened, the internal pressure is released along with the pressure release, the pressure difference between two sides of a flow passage after the pressure release is reduced, at the moment, the main valve flap 2 can be opened easily by rotating the hand wheel 9, the opening and closing of the flow are controlled, the valve flap cover 101 and the split ring 102 clamp the auxiliary valve flap 103 with the lower valve rod 5, the auxiliary valve flap 103 drives the main valve flap 2 to open and close through the split nut 104 and the split pin 105, the main valve flap 2 and the auxiliary valve flap 103 are sealed in a cone sealing mode, and the cone sealing mode is also adopted between the main valve flap 2 and the valve body 1, so that the effect in the sealing process can be improved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a bivalve lamella structure bellows stop valve, includes valve body (1), its characterized in that: the inside of valve body (1) is provided with valve clack (2), the upper surface of valve clack (2) is provided with vice valve clack mechanism (10), the inside of vice valve clack mechanism (10) is provided with down valve rod (5), lower valve rod (5) welding has down go-between (3), the upper surface of valve body (1) has valve gap (12) through bolted connection, the bottom welding of valve gap (12) has last go-between (7), go up the welding of go-between (7) and down between go-between (3) and have bellows (4), bellows (4) hole is run through in lower valve rod (5), the inside of valve gap (12) is provided with connects sealing mechanism (8).

2. The dual-flap bellows shut-off valve according to claim 1, wherein: graphite +304 winding gaskets (6) are sleeved between the valve body (1) and the valve cover (12), packing (11) is arranged inside the valve cover (12), and the surface of the packing (11) is in contact with the lower valve rod (5).

3. The dual-flap bellows shut-off valve according to claim 1, wherein: transmission coupling mechanism (8) are including last valve rod (82), the bottom of going up valve rod (82) is connected with connecting block (83) through locking bolt (84), the top joint of lower valve rod (5) is in the inside of connecting block (83), the inside way threaded connection of valve gap (12) has valve-stem nut (87), the surface of valve-stem nut (87) is through holding screw (81) and valve gap (12) fixed connection, in case not hard up.

4. The dual-flap bellows shut-off valve according to claim 3, wherein: valve gap (12) packing box female connection has packing to press cover (85), the bottom of packing to press cover (85) sets up has connect packing pad (86), packing pad (86) are located the top of packing (11), the top of going up valve rod (82) is passed the inside of valve rod nut (87) and is blocked and be had hand wheel (9).

5. The dual-flap bellows shut-off valve according to claim 1, wherein: vice valve clack mechanism (10) is including valve clack lid (101), the surperficial external screw thread connection of valve clack lid (101) has vice valve clack (103), the inside joint of vice valve clack (103) has run from opposite directions ring (102), run from opposite directions the bottom that ring (102) are located lower valve rod (5).

6. The dual-flap bellows shut-off valve according to claim 1, wherein: the lower end of the auxiliary valve clack (103) is in threaded connection with an open nut (104), the lower portion of the auxiliary valve clack (103) is inserted with an open pin (105), and the open nut (104) and the open pin (105) are both located below the valve clack (2).