CN212055862U - Stop valve for ammonia - Google Patents

Abstract

The utility model relates to the technical field of valves, specifically be a stop valve for ammonia, including the valve main part, the conveying pipeline, the discharging pipe, flange, the connector, the packing box, the valve rod, the case, disk seat and valve clack, the valve main part is handed over an organic whole from top to bottom by conveying pipeline and discharging pipe and is taken shape, conveying pipeline and discharging pipe junction intercommunication, the edge forms the disk seat, link up in the middle of the disk seat and set up to the shut-off mouth, the integrative one-tenth in valve main part upper end is equipped with the connector, conveying pipeline and discharging pipe outside welded connection flange, bolted connection packing box is passed through to the connector upper end: the utility model provides a can put that limit quick replacement's valve clack to improve sealed effect to the valve clack junction, prevent that case and valve clack junction from appearing leaking the influence by the effect, the whole sealed effect also strengthens greatly moreover, can prevent that ammonia or aqueous ammonia from leaking and influence operational environment, harm staff's is healthy even.

Description

Stop valve for ammonia

Technical Field

The utility model relates to valve technical field specifically is a stop valve for ammonia.

Background

The ammonia stop valve often uses oxygen, nitrogen, hydrogen, argon, and other gases. When the ammonia pressure-reducing valve is used, the gas pressure is reduced to the range required by an experiment through the stop valve for ammonia, and the gas is input into a using system through fine adjustment of other control valves.

Because ammonia or aqueous ammonia have corrosivity, use the stop valve need have stronger corrosion resistance, but the valve clack of long-time back stop valve of using still can be by slow corrosion loss, finally damage unable use, consequently need one kind can make things convenient for the stop valve of quick replacement valve clack, reduce the cost that the stop valve maintenance was changed and is dropped into, the stop valve that uses need possess than the stronger sealing performance of general stop valve in addition, prevent that the ammonia from revealing to cause operational environment to have the potential safety hazard, harm staff's healthy even, for this, the utility model provides a stop valve for ammonia is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stop valve for ammonia 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: the utility model provides a stop valve for ammonia, includes valve main part, conveying pipeline, discharging pipe, flange, connector, packing box, valve rod, case, disk seat and valve clack, the valve main part is handed over an organic whole by conveying pipeline and discharging pipe from top to bottom and is taken shape, conveying pipeline and discharging pipe junction intercommunication, edge formation disk seat, link up in the middle of the disk seat and set up to the shut-off mouth, the integrative connector that is equipped with in valve main part upper end, conveying pipeline and the discharging pipe outside welded connection flange, bolted connection packing box is passed through to the connector upper end, and the threaded connection box lid is gone up to the packing box, the inside threaded connection valve rod of packing box, valve rod upper end bolted connection hand wheel, valve rod lower extreme welded valve core, the case lower extreme passes through the threaded connection valve clack, the valve clack.

Preferably, the middle of the connecting flange is communicated with a material conveying pipe and a material discharging pipe inside, a sealing ring is convexly arranged on the connecting flange outside the opening of the material conveying pipe and the opening of the material discharging pipe, a sealing ring groove is formed in the connecting flange outside the sealing ring, and a sealing ring is arranged in the sealing ring groove in a padded mode.

Preferably, a connecting hole is formed in the valve clack, the lower end of the valve core is inserted in the connecting hole, a threaded head is integrally formed at the lower end of the valve core, the threaded head penetrates through the valve clack and is connected to the outer side of the lower end of the valve clack, and the valve clack is fixed to the outer side of the threaded head through a fastening nut.

Preferably, the seal groove has been seted up to the valve clack lower extreme, integrative shaping is equipped with sealed piece on the valve clack in the seal groove outside, a plurality of interception rings are inlayed in the valve clack lower extreme outside, the interception ring is made for rubber, the valve clack lower extreme is seted up flutedly, fastening nut upper end outside limit upwards protrusion is equipped with sealed lug, and sealed lug is pegged graft and is sealed with the junction of threaded joint and fastening nut and valve clack in the recess.

Preferably, the lower end of the valve clack is inserted into a cut-off opening in the valve seat, a sealing baffle is arranged on the edge of the upper end of the inner side of the valve seat in a protruding mode, and a sealing groove is sleeved on the outer side of the sealing baffle.

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

the utility model provides a can put that limit quick replacement's valve clack to improving sealed effect to the valve clack junction, preventing that case and valve clack junction from appearing leaking the influence by the effect, the whole sealed effect also strengthens greatly moreover, can prevent that ammonia or aqueous ammonia from leaking influence operational environment, harm staff's is healthy even.

Drawings

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

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

In the figure: the device comprises a valve body 1, a material conveying pipe 2, a material discharging pipe 3, a connecting flange 4, a connector 5, a valve cover 6, a stuffing box 7, a box cover 8, a valve rod 9, a hand wheel 10, a valve core 11, a valve seat 12, a valve clack 13, a sealing block 14, a sealing groove 15, a sealing baffle 16, a connecting hole 17, a thread head 18, a fastening nut 19, a sealing bump 20, a flow stopping ring 21, a flow stopping opening 22, a sealing ring 23 and a sealing ring groove 24.

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 to 3, the present invention provides a technical solution: a stop valve for ammonia comprises a valve main body 1, a material conveying pipe 2, a material discharging pipe 3, a connecting flange 4 and a connector 5, packing box 7, valve rod 9, case 11, disk seat 12 and valve clack 13, valve main part 1 is handed over integrative the taking shape from top to bottom by conveying pipeline 2 and discharging pipe 3, the conveying pipeline 2 communicates with 3 junctions of discharging pipe, the edge forms disk seat 12, link up in the middle of the disk seat 12 and set up to cutoff port 22, the integrative taking shape in 1 upper end of valve main part is equipped with connector 5, 3 outside welded connection flanges 4 of conveying pipeline 2 and discharging pipe, 5 upper ends of connector pass through bolted connection packing box 7, 7 upper end threaded connection box lids 8 of packing box, 7 internal thread connection valve rod 9 of packing box, 9 upper end bolted connection hand wheel 10 of valve rod, 9 lower extreme welded valve core 11 of valve rod, 11 lower extremes of case pass through threaded connection valve clack 13, 13 lower extremes of valve clack are pegged graft in cutoff.

The utility model discloses can further set up to, link up intercommunication to inside conveying pipeline 2 and discharging pipe 3 in the middle of flange 4, the protrusion is equipped with sealing ring 23 on flange 4 in the opening outside of conveying pipeline 2 and discharging pipe 3, sealing ring groove 24 has been seted up on flange 4 in the sealing ring 23 outside, the gasket is equipped with the sealing washer in the sealing ring groove 24, sealed interface through flange 4 department, can increase the compactness of being connected between valve main part 1 and the pipeline, increase sealed effect, prevent that ammonia or aqueous ammonia from revealing from the pipe connection, influence the all ring edge borders, improve the environmental protection effect.

The utility model discloses can further set up to, valve clack 13 is inside to have seted up connecting hole 17, and 11 lower extremes of case are pegged graft in connecting hole 17 to being equipped with screw thread head 18 at 11 integrative one-tenth of lower extreme of case, screw thread head 18 passes valve clack 13 and is connected to the valve clack 13 lower extreme outside, and fixing valve clack 13 in the screw thread head 18 outside through fastening nut 19, conveniently carry out the maintenance change after the valve clack 13 corrosion damage through bolted connection valve clack 13, increase the operation convenience, increase valve main part 1's life.

The utility model discloses can further set up to, seal groove 15 has been seted up to valve clack 13 lower extreme, integrative shaping is equipped with sealing block 14 on the valve clack 13 in the seal groove 15 outside, a plurality of interception rings 21 are inlayed in the valve clack 13 lower extreme outside, interception ring 21 makes for rubber, valve clack 13 lower extreme is seted up flutedly, fastening nut 19 upper end outside limit upwards the protrusion is equipped with sealing lug 20, sealing lug 20 pegs graft in the recess with the junction of threaded head 18 with fastening nut 19 and valve clack 13 sealed, can fix valve clack 13 through each structure on the valve clack 13, and peg graft when in interception mouth 22 at valve clack 13, provide stronger sealed effect, increase the result of use, prevent to appear leaking.

The utility model discloses can further set up to, the lower extreme of valve clack 13 is pegged graft in the inside cut-off 22 of disk seat 12, and the inboard upper end edge of disk seat 12 upwards the protrusion is equipped with seal baffle 16, and the cover in the 16 outside of seal baffle is equipped with seal groove 15, and seal baffle 16 cooperation seal groove 15 on the disk seat 12 can improve sealing performance, prevents that ammonia or aqueous ammonia from leaking.

The working principle is as follows: when the valve works, the valve body 1 is connected between ammonia conveying pipelines, the valve core 11 can move up and down by rotating the hand wheel 10, and then the valve is opened or closed, the two ends of the valve body 1 are welded with the connecting flanges 4, the connecting flanges 4 are connected on the conveying pipelines by fixing bolts, the outer side of the connecting flanges 4 is convexly provided with the sealing ring 23, the connecting flange 4 at the outer side of the sealing ring 23 is provided with the sealing ring groove 24, the sealing effect can be increased by matching the sealing ring arranged in the sealing ring 23 and the sealing ring groove 24 during the connection of the connecting flanges 4, the leakage of ammonia gas or ammonia water from the connection part of the valve body 1 and the conveying pipelines is prevented, the lower end of the valve core 11 is connected with the valve clack 13 by bolts, the outer side of the lower end of the valve clack 13 is provided with the sealing groove 15, the sealing block 14 is integrally formed on, the upper end of the inner side of the valve seat 12 is convexly provided with a sealing baffle 16, and the sealing baffle 16 is matched with the sealing groove 15 and the sealing block 14 to increase the sealing effect of the valve clack 13 after interception.

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 (5)

1. The utility model provides a stop valve for ammonia, includes valve main part (1), conveying pipeline (2), discharging pipe (3), flange (4), connector (5), packing box (7), valve rod (9), case (11), disk seat (12) and valve clack (13), its characterized in that: the valve main body (1) is formed by up-down delivery pipe (2) and discharge pipe (3) in an integrated way, the joint of the material conveying pipe (2) and the material discharging pipe (3) is communicated, a valve seat (12) is formed at the edge, a cut-off port (22) is arranged in the middle of the valve seat (12) in a penetrating way, a connector (5) is integrally formed at the upper end of the valve main body (1), the outer sides of the material conveying pipe (2) and the material discharging pipe (3) are welded with connecting flanges (4), the upper end of the connector (5) is connected with a stuffing box (7) through a bolt, the upper end of the stuffing box (7) is connected with a box cover (8) through a thread, a valve rod (9) is connected with the interior of the stuffing box (7) through screw threads, a hand wheel (10) is connected with the upper end of the valve rod (9) through a bolt, the lower end of the valve rod (9) is welded with a valve core (11), the lower end of the valve core (11) is connected with a valve clack (13) through threads, and the lower end of the valve clack (13) is inserted into a cutoff opening (22).

2. A shut-off valve for ammonia according to claim 1, characterized in that: link up in the middle of flange (4) and communicate to inside conveying pipeline (2) and discharging pipe (3) protruding on flange (4) in the opening outside of conveying pipeline (2) and discharging pipe (3) is equipped with sealing ring (23), sealing ring groove (24) have been seted up on flange (4) in the sealing ring (23) outside, the gasket is equipped with the sealing washer in sealing ring groove (24).

3. A shut-off valve for ammonia according to claim 1, characterized in that: the valve is characterized in that a connecting hole (17) is formed in the valve clack (13), the lower end of the valve core (11) is inserted into the connecting hole (17), a threaded head (18) is integrally formed at the lower end of the valve core (11), the threaded head (18) penetrates through the valve clack (13) to be connected to the outer side of the lower end of the valve clack (13), and the valve clack (13) is fixed to the outer side of the threaded head (18) through a fastening nut (19).

4. A shut-off valve for ammonia according to claim 3, characterized in that: seal groove (15) have been seted up to valve clack (13) lower extreme, integrative taking shape is equipped with sealing block (14) on valve clack (13) in seal groove (15) outside, a plurality of interception rings (21) are inlayed in valve clack (13) lower extreme outside, interception ring (21) are made for rubber, valve clack (13) lower extreme has seted up the recess, fastening nut (19) upper end outside limit upwards protrusion is equipped with sealing convex block (20), and sealing convex block (20) are pegged graft and are sealed with the junction of screwed joint (18) and fastening nut (19) and valve clack (13) in the recess.

5. A shut-off valve for ammonia according to claim 3, characterized in that: the lower end of the valve clack (13) is inserted into a flow intercepting port (22) in a valve seat (12), a sealing baffle plate (16) is arranged on the edge of the upper end of the inner side of the valve seat (12) in an upward protruding mode, and a sealing groove (15) is sleeved on the outer side of the sealing baffle plate (16).

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