CN218440734U

CN218440734U - Supercritical forged steel gate valve

Info

Publication number: CN218440734U
Application number: CN202222923642.1U
Authority: CN
Inventors: 章伟; 叶蓓蓓; 苏长城; 章蓓蓓; 辜美玲
Original assignee: Shanghai Iron Valve Technology Co ltd
Current assignee: Shanghai Iron Valve Technology Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-02-03
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a supercritical forged steel gate valve, which comprises a valve seat, valve rod and case, be provided with the passageway in the disk seat, and its middle part has the installation department, be provided with the top cap on the installation department, be provided with the fixing base on the top cap, the center at the fixing base is installed to the valve rod, its one end is provided with the hand wheel, the other end extends to the inboard of installation department and can dismantle with the case and be connected, the both sides slope of case sets up, and dismantle on the case and install two wear-resisting pieces, be provided with two sealing washers on the disk seat, wear-resisting piece passes through the inclined plane cooperation with the sealing washer, the side of wear-resisting piece is provided with the scraper blade, be provided with the resilient means who keeps the wear-resisting piece of scraper blade conflict all the time on the disk seat, the utility model discloses a scraper blade is set up, utilize the elasticity of spring so that the scraper blade is contradicted all the time on the surface of wear-resisting piece to when the valve rod drives the case and reciprocates, can strike off the impurity on wear-resisting piece surface, avoid causing the influence to the leakproofness between wear-resisting piece and the sealing washer.

Description

Supercritical forged steel gate valve

Technical Field

The utility model discloses a supercritical forged steel gate valve belongs to valve body technical field.

Background

With the development of society, pipeline connection is required in both production and life. In pipe connections, it is necessary to apply to pipe connections, of which gate valves are one of the most frequently used.

Its simple structure of gate valve, convenient operation is the main demand of numerous work occasions, uses under the fluid condition that has some impurity as the gate valve, in case impurity adhesion is in the side of case, especially under the highly compressed condition, can cause the influence to the sealed of gate valve, and the case is located the inboard of disk seat, and the operating condition of internals can't be observed, and manual clearance is also more troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a supercritical forged steel gate valve in order to solve the problems in the prior art.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a supercritical forged steel gate valve, including disk seat, valve rod and case, its characterized in that, be provided with the passageway in the disk seat, and its middle part has the installation department, be provided with the top cap on the installation department, be provided with the fixing base on the top cap, the center at the fixing base is installed to the valve rod, and its one end is provided with the hand wheel, and the other end extends to the inboard of installation department and can dismantle with the case and be connected, the both sides slope of case sets up, and dismantlement on the case installs two wear-resisting pieces, be provided with two sealing washers on the disk seat, wear-resisting piece passes through the inclined plane cooperation with the sealing washer, the side of wear-resisting piece is provided with the scraper blade, be provided with the resilient means who keeps the wear-resisting piece of scraper blade conflict all the time on the disk seat.

Preferably, the elastic device comprises a first connecting rod, a second connecting rod, a connecting sleeve and a spring, flanges are arranged at two ends of the valve seat, one end of the first connecting rod is connected with the scraper, the other end of the first connecting rod is in threaded connection with the connecting sleeve, the second connecting rod penetrates through the flanges and is in threaded connection with the connecting sleeve, the spring is sleeved on the second connecting rod, and two ends of the spring respectively abut against the flanges and the connecting sleeve.

Preferably, the scraper blade comprises a fixing strip and a scraper blade, wherein a first dovetail groove is formed in the fixing strip, and one side of the scraper blade is embedded in the first dovetail groove.

Preferably, the wear-resistant block is provided with two dovetail bumps arranged horizontally, and the valve core is provided with a second dovetail groove matched with the dovetail bumps.

Preferably, be provided with on the top cap and install the manometer, the test end of manometer extends to the inboard of installation department, be provided with the seal cover that can contradict with the case on the top cap.

Preferably, a fixed block is arranged at one end of the valve rod, a through groove matched with the fixed block is formed in the valve core, and a positioning pin is arranged between the valve core and the fixed block.

Preferably, the sealing ring is provided with a convex rib matched with the valve seat.

Preferably, the valve seat and the valve core are both made of supercritical forged steel.

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

through setting up scraper blade and elastic device, when the valve rod drove the case and reciprocated, the scraper blade can support all the time and lean on the side at wear-resisting piece to its impurity with wear-resisting piece side adhesion strikes off, and is taken away by the fluid, thereby realizes automatic clearance, avoids causing the influence to the leakproofness of wear-resisting piece and sealing washer.

Drawings

Fig. 1 is a schematic structural view of a supercritical forged steel gate valve of the present invention;

FIG. 2 is a schematic view of an assembly structure of the valve core, the wear-resistant block and the sealing ring in the present invention;

FIG. 3 is an exploded view of the elastic device and the scraper of the present invention;

fig. 4 is an exploded view of the middle top cover of the present invention;

reference numerals: 1. a channel; 2. a top cover; 3. a fixed seat; 4. a hand wheel; 5. a valve stem; 6. a pressure gauge; 7. an elastic device; 8. a flange; 9. an installation part; 10. a rib; 11. connecting sleeves; 12. a squeegee; 13. a valve core; 14. positioning pins; 15. a first connecting rod; 16. a spring; 17. a second connecting rod; 18. a fixed block; 19. a seal ring; 20. dovetail lugs; 21. a wear-resistant block; 22. a fixing strip; 23. a first dovetail groove; 24. a scraper; 25. sealing sleeves; 26. a valve seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

As shown in fig. 1 to 4, a supercritical forged steel gate valve includes a valve seat 26, a valve rod 5 and a valve core 13, a channel 1 is provided in the valve seat 26, a mounting portion 9 is provided at the middle portion of the valve seat, a top cover 2 is provided on the mounting portion 9, a fixing seat 3 is provided on the top cover 2, the valve rod 5 is installed at the center of the fixing seat 3, a hand wheel 4 is provided at one end of the valve rod 5, the other end of the valve rod extends to the inner side of the mounting portion 9 and is detachably connected with the valve core 13, two sides of the valve core 13 are obliquely arranged, two wear-resistant blocks 21 are detachably mounted on the valve core 13, two sealing rings 19 are provided on the valve seat 26, the wear-resistant blocks 21 and the sealing rings 19 are matched through an inclined plane, a scraper 12 is provided on the side face of the wear-resistant block 21, an elastic device 7 for keeping the scraper 12 always abutting against the wear-resistant block 21 is provided on the valve seat 26, the elastic device 7 includes a first connecting rod 15, a second connecting rod 17, a connecting sleeve 11 and a spring 16, flanges 8 are provided at two ends of the valve seat 26, one end of the first connecting rod 15 is connected with the scraper 12, the other end is connected with the connecting sleeve 11 through a connecting sleeve, and the connecting sleeve 11.

Secondly, scraper blade 12 includes fixed strip 22 and scraper 24, be provided with first dovetail 23 on the fixed strip 22, the embedding of one side of scraper 24 is installed in first dovetail 23, wear-resisting piece 21 is last to have two forked tail lugs 20 that the level set up, be provided with the second dovetail with forked tail lug 20 complex on the case 13, be provided with on the top cap 2 and install manometer 6, the test end of manometer 6 extends to the inboard of installation department 9, be provided with on the top cap 2 and can contradict seal cover 25 with case 13, the one end of valve rod 5 is provided with fixed block 18, be provided with the logical groove with fixed block 18 complex on the case 13, and be provided with locating pin 14 between case 13 and the fixed block 18, be provided with on the sealing washer 19 with the bead 10 with disk seat 26 complex.

The working principle is as follows: when the gate valve is switched from a closed state to an open state, the hand wheel 4 is rotated to drive the valve rod 5 and the valve core 13 to move upwards, the scraper 24 is always in contact with the wear-resistant block 21 under the action of the spring 16, when the wear-resistant block 21 moves upwards, the first scraping of impurities can be realized, the dropped impurities can be taken away by fluid, when the valve core 13 moves upwards to a certain position, the top of the valve core can abut against the sealing sleeve 25, at the moment, the fluid pressure cannot act on the testing end of the pressure gauge 6, when the valve core 13 moves downwards to close the channel 1, the scraper 24 can perform the second scraping of impurities on the side face of the wear-resistant block 21, so that the sealing performance between the wear-resistant block 21 and the sealing ring 19 is effectively guaranteed, as the valve seat 26 and the valve core 13 are both made of supercritical forged steel, the valve seat can be suitable for a high-pressure environment, when the wear-resistant block 21 and the sealing ring 19 cannot be completely sealed, the testing end of the pressure gauge 6 is exposed in the inner space of the mounting portion 9, the fluid can enter the mounting portion 9, and the pressure gauge 6 can test the fluid pressure inside of the inner side of the valve, so that whether the gate valve needs to be maintained.

The scraper 24 is connected with the fixing strip 22, the wear-resistant block 21 and the valve core 13 in a dovetail groove mode, replacement of parts can be facilitated, the valve rod 5 and the valve core 13 are connected through the fixing block 18 and then positioned by the positioning pin 14, rapid assembly can be achieved, the distance between the valve core 13 and the mounting portion 9 does not need to be adjusted leftwards and rightwards, and operation is simple and convenient.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a supercritical forged steel gate valve, includes disk seat (26), valve rod (5) and case (13), its characterized in that, be provided with passageway (1) in disk seat (26), and its middle part has installation department (9), be provided with on installation department (9) top cap (2), be provided with fixing base (3) on top cap (2), install at the center of fixing base (3) valve rod (5), its one end is provided with hand wheel (4), and the other end extends to the inboard of installation department (9) and can dismantle with case (13) and be connected, the both sides slope of case (13) sets up, and dismantles on case (13) and install two wear-resisting pieces (21), be provided with two sealing washer (19) on disk seat (26), wear-resisting piece (21) pass through the inclined plane cooperation with sealing washer (19), the side of wear-resisting piece (21) is provided with scraper blade (12), be provided with elasticity device (7) that keep scraper blade (12) contradict wear-resisting piece (21) all the time on disk seat (26).

2. The supercritical forged steel gate valve according to claim 1, wherein the elastic device (7) comprises a first connecting rod (15), a second connecting rod (17), a connecting sleeve (11) and a spring (16), flanges (8) are arranged at two ends of the valve seat (26), one end of the first connecting rod (15) is connected with the scraper (12), the other end of the first connecting rod is in threaded connection with the connecting sleeve (11), the second connecting rod (17) penetrates through the flange (8) and the connecting sleeve (11) in threaded connection, the spring (16) is sleeved on the second connecting rod (17), and two ends of the spring respectively abut against the flange (8) and the connecting sleeve (11).

3. The supercritical forged steel gate valve according to claim 2 wherein said scraper (12) comprises a fixing strip (22) and a scraper blade (24), said fixing strip (22) is provided with a first dovetail groove (23), one side of said scraper blade (24) is embedded in said first dovetail groove (23).

4. The supercritical forged steel gate valve according to claim 1, wherein the wear-resistant block (21) has two horizontally arranged dovetail protrusions (20), and the valve core (13) has a second dovetail groove matching with the dovetail protrusions (20).

5. The supercritical forged steel gate valve according to claim 1, wherein a pressure gauge (6) is installed on the top cap (2), the testing end of the pressure gauge (6) extends to the inner side of the installation part (9), and a sealing sleeve (25) capable of abutting against the valve core (13) is installed on the top cap (2).

6. The supercritical forged steel gate valve according to claim 1, wherein a fixed block (18) is arranged at one end of the valve rod (5), a through groove matched with the fixed block (18) is arranged on the valve core (13), and a positioning pin (14) is arranged between the valve core (13) and the fixed block (18).

7. A supercritical forged steel gate valve according to claim 1 wherein said sealing ring (19) is provided with a ridge (10) which engages with the valve seat (26).

8. A gate valve of supercritical forged steel according to claim 1 wherein the valve seat (26) and the valve core (13) are made of supercritical forged steel.