CN213236086U

CN213236086U - Stainless steel welding bellows stop valve

Info

Publication number: CN213236086U
Application number: CN202021717997.XU
Authority: CN
Inventors: 舒诗情; 舒画
Original assignee: Hangzhou Huili Technology Co ltd
Current assignee: Hangzhou Huili Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-05-18
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a stainless steel welding bellows stop valve, which comprises a valve body, the inlet outlet has been seted up to the inside of valve body, the equal fixedly connected with clamping ring in both sides of valve body, all run through all around of valve gap and be provided with the screw rod, every the lower extreme of screw rod runs through all around of valve body upper end respectively, and every the equal threaded connection in upper end of screw rod has the nut, the upper end of valve body is provided with the valve gap, the middle part of valve gap is run through and is provided with the bellows, the lower extreme fixedly connected with case of bellows, the case is located the inside of inlet outlet. The utility model discloses when needs damming, aerify through air cock and connecting pipe to aerifing that circle is inside, through aerifing circle inflation and first recess zonulae occludens to make case and the inside zonulae occludens of valve body more, make the gas tightness of valve body better, through being provided with the seal groove, through the combined action of sealing washer and sealed piece, make the gas tightness of whole valve body better.

Description

Stainless steel welding bellows stop valve

Technical Field

The utility model relates to a stop valve specifically is a stainless steel welding bellows stop valve.

Background

The stop valve is also called stop valve, belonging to forced sealing type valve, so when the valve is closed, it must apply pressure to valve clack to force sealing surface not to leak, when the medium is fed into the valve from below the valve clack, the resistance force which must be overcome by operation force is the friction force of valve stem and packing material and the thrust force produced by pressure of medium, the force for closing the valve is greater than the force for opening the valve, so the diameter of valve stem is greater, otherwise the failure of stem top bending can occur. The connection mode is divided into three types: the valve is characterized in that the valve body is provided with a valve clack, a valve rod and a valve cover, wherein the valve clack is connected with the valve body through a flange, a screw thread and a welding joint, the valve body is provided with a valve clack, the valve clack is connected with the valve cover through a screw thread, the valve body is provided with a valve rod, the valve rod is provided with a valve body, the valve body is provided with a valve body. When the stop valve is opened, the opening height of the valve clack is 25% -30% of the nominal diameter, the flow reaches the maximum, and the valve reaches the full-open position. Therefore, the fully open position of the shut-off valve is determined by the stroke of the valve clack.

The sealing performance of the existing stop valve is reduced after the existing stop valve is used for a long time, and a valve rod of the existing stop valve is bent under the action of water pressure under the long-time use, so that the use is difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stainless steel welding bellows stop valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a stainless steel welded corrugated pipe stop valve comprises a valve body, wherein a water inlet and a water outlet are formed in the valve body, connecting rings are fixedly connected to two sides of the valve body, a valve cover is arranged at the upper end of the valve body, screw rods are arranged on the periphery of the valve cover in a penetrating manner, the lower end of each screw rod respectively penetrates through the periphery of the upper end of the valve body, a nut is in threaded connection with the upper end of each screw rod, a corrugated pipe is arranged in the middle of the valve cover in a penetrating manner, a valve core is fixedly connected to the lower end of the corrugated pipe and located in the water inlet and the water outlet, embedding blocks are embedded in two sides of the middle of the water inlet and the water outlet, sealing grooves are formed in one side of the upper end of the adjacent side faces of the embedding blocks on two sides, first grooves are formed in one side of the, the inside of second recess is provided with aerifys the circle, be connected with the branch pipe between the inside both sides of aerifing the circle, the middle part fixedly connected with connecting pipe of branch pipe, the top of second recess is provided with the sealing washer, the upside of sealing washer is provided with sealed piece.

As a further aspect of the present invention: the equal fixedly connected with stopper in the inside both sides in upper end of valve body, both sides the stopper is located the both sides of case respectively, and both sides the adjacent one end of stopper has all seted up the arc wall.

As a further aspect of the present invention: the inside of bellows is provided with the valve rod, the connecting pipe runs through the upper end that the valve rod extends to the valve rod, just the upper end fixedly connected with air cock of connecting pipe, the upper end outside fixedly connected with hand wheel of bellows.

As a further aspect of the present invention: the sealing ring is located inside the sealing groove and made of corrosion-resistant rubber.

As a further aspect of the present invention: the cross-section of sealed piece is the L type, just sealed piece is connected with the upper end block of mosaic block, sealed piece is corrosion-resistant rubber material.

As a further aspect of the present invention: the size of the first groove is matched with that of the inflatable ring.

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

1. the utility model discloses a be provided with and aerify circle, first recess, connecting pipe, branch pipe and air cock and cooperate the use, when needs are dammed, aerify the circle inside through air cock and connecting pipe, through aerifing circle inflation and first recess zonulae occludens to make case and valve body inside connect closely more, make the gas tightness of valve body better, through being provided with the seal groove, through the combined action of sealing washer and sealed piece, make the gas tightness of whole valve body better.

2. The utility model discloses a be provided with the stopper, when the case was opened, the stopper through both sides was fixed the position of case, makes like this when rivers pass through, and the valve rod can remain stable, can not take place crooked under hydraulic effect, keeps the stability of structure.

Drawings

Fig. 1 is a schematic perspective view of a stainless steel welded bellows stop valve.

Fig. 2 is a schematic sectional structure diagram of a stainless steel welded bellows stop valve.

Fig. 3 is an enlarged schematic view of a stainless steel welded bellows stop valve at a point a in fig. 2.

In the figure: the valve comprises a valve body 1, a connecting ring 2, a valve cover 3, a screw rod 4, a nut 5, a corrugated pipe 6, a hand wheel 7, an air tap 8, a water inlet and outlet 9, a valve core 10, a connecting pipe 11, a first groove 12, a valve rod 13, a limiting block 14, a sealing block 15, an embedding block 16, a sealing groove 17, a sealing ring 18, a second groove 19, a branch pipe 20 and an inflating ring 21.

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. 1-3, in the embodiment of the present invention, a stainless steel welded bellows stop valve comprises a valve body 1, a water inlet 9 and a water outlet 9 are formed in the valve body 1, both sides of the valve body 1 are fixedly connected with a connecting ring 2, a valve cover 3 is arranged at the upper end of the valve body 1, screw rods 4 are arranged around the valve cover 3, the lower end of each screw rod 4 is respectively arranged around the upper end of the valve body 1, a nut 5 is connected to the upper end of each screw rod 4 through a screw thread, a bellows 6 is arranged in the middle of the valve cover 3, a valve core 10 is fixedly connected to the lower end of the bellows 6, the valve core 10 is located in the water inlet 9, mosaic blocks 16 are embedded in both sides of the middle of the water inlet 9, a sealing groove 17 is formed in one side of the upper end of the adjacent side of each mosaic block 16, a first groove 12 is formed, the lower end of the valve core 10 is provided with a second groove 19, an inflation ring 21 is arranged inside the second groove 19, a branch pipe 20 is connected between two sides inside the inflation ring 21, the middle part of the branch pipe 20 is fixedly connected with a connecting pipe 11, a sealing ring 18 is arranged above the second groove 19, a sealing block 15 is arranged on the upper side of the sealing ring 18, a valve rod 13 is arranged inside the corrugated pipe 6, the connecting pipe 11 penetrates through the valve rod 13 and extends to the upper end of the valve rod 13, an air tap 8 is fixedly connected with the upper end of the connecting pipe 11, a hand wheel 7 is fixedly connected with the outer side of the upper end of the corrugated pipe 6, air is pumped through the air tap 8, the air enters the inflation ring 21 through the connecting pipe 11 and the branch pipe 20, so that the inflation ring 21 expands and is tightly connected with the first groove 12, the tightness between the valve core 10 and the mosaic block 16 is increased, through the sealing connection of the sealing block 15 and the mosaic block 16, the air tightness of the whole valve body is better.

Please refer to fig. 1, the two side stoppers 14 are respectively located on two sides of the valve element 10, and the adjacent ends of the two side stoppers 14 are respectively provided with an arc-shaped groove, and the positions of the valve element 10 are fixed by the stoppers 14 on two sides, so that the valve rod 13 can be kept stable when water flows pass through, and cannot be bent under the action of water pressure, thereby keeping the structure stable.

Referring to fig. 3, the sealing ring 18 is located inside the sealing groove 17, and the sealing ring 18 is made of corrosion-resistant rubber.

Referring to fig. 3, the cross section of the sealing block 15 is L-shaped, the sealing block 15 is engaged with the upper end of the insert block 16, and the sealing block 15 is made of corrosion-resistant rubber.

Referring to fig. 3, the size of the first groove 12 is matched with the size of the inflatable ring 21.

The utility model discloses a theory of operation is:

during the use, make case 10 go up and down through rotatory hand wheel, when the valve is whole to be closed, inflate through air cock 8, enter into the inside of aerifing circle 21 through connecting pipe 11 and branch pipe 20, make aerify the circle 21 inflation, carry out zonulae occludens with first recess 12, increase the compactness between case 10 and the mosaic piece 16, through being provided with seal groove 17, seal up through setting up sealing washer 18 in the inside of seal groove 17, through the sealing connection of seal block 15 with mosaic piece 16, make the gas tightness of whole valve body better, when the valve is opened, the stopper 14 through both sides is fixed the position of case 10, make like this when rivers pass through, valve rod 13 can remain stable, can not take place the bending under hydraulic effect, keep the stable of structure.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a stainless steel welding bellows stop valve, includes valve body (1), its characterized in that: a water inlet and outlet (9) is formed in the valve body (1), connecting rings (2) are fixedly connected to two sides of the valve body (1), a valve cover (3) is arranged at the upper end of the valve body (1), screw rods (4) are arranged on the periphery of the valve cover (3) in a penetrating manner, the lower end of each screw rod (4) penetrates through the periphery of the upper end of the valve body (1) respectively, a nut (5) is connected to the upper end of each screw rod (4) in a threaded manner, a corrugated pipe (6) is arranged in the middle of the valve cover (3) in a penetrating manner, a valve core (10) is fixedly connected to the lower end of the corrugated pipe (6), the valve core (10) is located in the water inlet and outlet (9), embedding blocks (16) are embedded in two sides of the middle of the water inlet and outlet (9), and sealing grooves (17), both sides first recess (12) have all been seted up to the lower extreme one side of the adjacent side of mosaic block (16), case (10) are located both sides between mosaic block (16), second recess (19) have been seted up to the lower extreme of case (10), the inside of second recess (19) is provided with aerifys circle (21), it is connected with branch pipe (20) to aerify between the inside both sides of circle (21), middle part fixedly connected with connecting pipe (11) of branch pipe (20), the top of second recess (19) is provided with sealing washer (18), the upside of sealing washer (18) is provided with sealed piece (15).

2. The stainless steel welded bellows shut-off valve of claim 1, wherein: the valve is characterized in that limiting blocks (14) are fixedly connected to two inner sides of the upper end of the valve body (1), the limiting blocks (14) on two sides are respectively located on two sides of the valve core (10), and arc-shaped grooves are formed in two adjacent ends of the limiting blocks (14).

3. The stainless steel welded bellows shut-off valve of claim 1, wherein: the inside of bellows (6) is provided with valve rod (13), connecting pipe (11) run through valve rod (13) and extend to the upper end of valve rod (13), just the upper end fixedly connected with air cock (8) of connecting pipe (11), the upper end outside fixedly connected with hand wheel (7) of bellows (6).

4. The stainless steel welded bellows shut-off valve of claim 1, wherein: the sealing ring (18) is located inside the sealing groove (17), and the sealing ring (18) is made of corrosion-resistant rubber materials.

5. The stainless steel welded bellows shut-off valve of claim 1, wherein: the cross-section of sealed piece (15) is the L type, just sealed piece (15) are connected with the upper end block of mosaic block (16), sealed piece (15) are corrosion-resistant rubber material.

6. The stainless steel welded bellows shut-off valve of claim 1, wherein: the size of the first groove (12) is matched with that of the inflatable ring (21).