阅读说明：本技术 一种钻井用耐高压防泄漏旋塞阀 (High-pressure-resistant and leak-proof plug valve for well drilling ) 是由 田洪卫 袁天发 于 2020-09-02 设计创作，主要内容包括：本发明公开了一种钻井用耐高压防泄漏旋塞阀,包括壳体、连接座、通槽和工作机构；所述壳体包括横管和竖管,所述壳体竖管的底部固定连接有连接座,所述壳体竖管的中间位置贯通开设有通槽；所述工作机构包括转轴、旋塞、通孔、凸台、密封圈、密封端盖和加固套,所述转轴的下端转动连接在连接座上,所述旋塞设置在转轴的中间位置,所述旋塞呈倒置的圆台状,所述旋塞的中间位置贯通开设有通孔,所述旋塞的底部设置有凸台,所述壳体竖管与凸台对应位置的内壁上固定连接有密封圈,所述密封圈与凸台接触,所述密封端盖固定连接在壳体竖管的上端。该发明具有密封紧固,不易发生缓慢泄漏,耐高压性能好等优点。(The invention discloses a high-pressure-resistant and leak-proof plug valve for well drilling, which comprises a shell, a connecting seat, a through groove and a working mechanism, wherein the shell is provided with a connecting hole; the shell comprises a transverse pipe and a vertical pipe, the bottom of the vertical pipe of the shell is fixedly connected with a connecting seat, and a through groove is formed in the middle of the vertical pipe of the shell in a penetrating manner; the working mechanism comprises a rotating shaft, a cock, a through hole, a boss, a sealing ring, a sealing end cover and a reinforcing sleeve, wherein the lower end of the rotating shaft is rotatably connected to the connecting seat, the cock is arranged at the middle position of the rotating shaft and is in an inverted round platform shape, the middle position of the cock is communicated with the through hole, the boss is arranged at the bottom of the cock, the sealing ring is fixedly connected to the inner wall of the corresponding position of the shell vertical pipe and the boss, the sealing ring is in contact with the boss, and the sealing end cover is fixedly connected to the upper end of the shell vertical pipe. The invention has the advantages of tight sealing, difficult slow leakage, good high pressure resistance and the like.)

1. The utility model provides a high pressure resistant plug valve of preventing leaking for well drilling which characterized in that: comprises a shell (1), a connecting seat (2), a through groove (3) and a working mechanism (4);

the shell (1) comprises a transverse pipe and a vertical pipe, the bottom of the vertical pipe of the shell (1) is fixedly connected with a connecting seat (2), and a through groove (3) is formed in the middle of the vertical pipe of the shell (1) in a penetrating mode;

the working mechanism (4) comprises a rotating shaft (41), a cock (42), a through hole (43), a boss (44), a sealing ring (45), a sealing end cover (46) and a reinforcing sleeve (47), the lower end of the rotating shaft (41) is rotatably connected to the connecting seat (2), the cock (42) is arranged in the middle of the rotating shaft (41), the cock (42) is in an inverted round table shape, a through hole (43) is arranged at the middle position of the cock (42) in a penetrating way, a boss (44) is arranged at the bottom of the cock (42), a sealing ring (45) is fixedly connected on the inner wall of the shell (1) at the position corresponding to the boss (44), the sealing ring (45) is contacted with the boss (44), the sealing end cover (46) is fixedly connected with the upper end of the vertical pipe of the shell (1), the reinforcing sleeve (47) is fixedly connected to the upper end of the sealing end cover (46).

2. The high pressure resistant and leak proof plug valve for well drilling according to claim 1, wherein: the scraper is characterized by further comprising a scraper blade (5), wherein the scraper blade (5) is vertically and fixedly connected to the inner wall of the vertical pipe of the shell (1), and the end part of the scraper blade (5) is in contact with the cock (42).

3. The high pressure resistant and leak proof plug valve for well drilling according to claim 1, wherein: still include dwang (6) and rubber sleeve (7), the one end fixed connection of dwang (6) is in the upper end of pivot (41), dwang (6) are perpendicular with pivot (41), the fixed cover of the other end of dwang (6) has connect rubber sleeve (7).

4. The high pressure resistant and leak proof plug valve for well drilling according to claim 1, wherein: still include connecting block (8) and spacing (9), connecting block (8) fixed connection is on the upper surface of casing (1) violently managing both sides, spacing (9) are the U type of invering, the lower extreme fixed connection of spacing (9) is on two connecting blocks (8).

5. The high pressure resistant and leak proof plug valve for well drilling according to claim 1, wherein: still include flange (10) and draw-in groove (11), flange (10) fixed connection is at casing (1) both ends, draw-in groove (11) are seted up the intermediate position of flange (10).

Technical Field

The invention relates to the technical field of plug valves, in particular to a high-pressure-resistant and leak-proof plug valve for drilling.

Background

The plug valve utilizes a driving device to realize the lifting of the valve core and the compression of the valve core, so that the switching and resetting sealing of the switching valve are realized, the driving device can be manual or electric, the electric driving can save labor, but the electric driving structure is not suitable for being used in some complicated places or regions with crude conditions, and the manual mode is more practical.

To some important construction sites, during drilling, need be to watering in the pit, at the site condition of construction comparatively crude, use the plug valve mostly as the switching valve of control conduit, can effectively utilize the advantage of plug valve stable control, but the plug valve takes place slowly to reveal the problem when pressure is great easily, and high pressure resistance can be unstable, and the practicality is not good. There is therefore a need for improvements in plug valve construction to address these problems, such as: the slow leakage is easy to occur, and the high pressure resistance is not good.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a high-pressure-resistant and leakage-proof plug valve for well drilling, which is tightly sealed, not easy to leak slowly and good in high-pressure resistance, and can effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a high pressure resistant and leak-proof plug valve for well drilling comprises a shell, a connecting seat, a through groove and a working mechanism;

the shell comprises a transverse pipe and a vertical pipe, the bottom of the vertical pipe of the shell is fixedly connected with a connecting seat, and a through groove is formed in the middle of the vertical pipe of the shell in a penetrating manner;

the working mechanism comprises a rotating shaft, a cock, a through hole, a boss, a sealing ring, a sealing end cover and a reinforcing sleeve, wherein the lower end of the rotating shaft is rotatably connected onto the connecting seat, the cock is arranged at the middle position of the rotating shaft and is in an inverted round platform shape, the middle position of the cock is communicated with the through hole, the boss is arranged at the bottom of the cock, the sealing ring is fixedly connected onto the inner wall of the corresponding position of the shell vertical pipe and the boss, the sealing ring is in contact with the boss, the sealing end cover is fixedly connected to the upper end of the shell vertical pipe, and the reinforcing sleeve is fixedly connected to the upper end of. The lower end of a rotating shaft in the working mechanism is rotatably connected with a connecting seat on a vertical pipe of the shell, the number of channels on the shell is reduced, the using effect is guaranteed, meanwhile, the leakage can be reduced, and a boss arranged at the lower end of the cock is matched with a sealing ring to form two sealing lines.

Further, still include the doctor-bar, the doctor-bar is vertical fixed connection on the inner wall of casing standpipe, the tip and the cock contact of doctor-bar. The scraping blade can scrape off residual liquid on the faucet.

Further, still include dwang and rubber sleeve, the one end fixed connection of dwang is in the upper end of pivot, the dwang is perpendicular with the pivot, the fixed rubber sleeve that has cup jointed of the other end of dwang. The rotating shaft can be rotated by transferring the rotating rod by hand, and the rubber sleeve arranged at the end part reduces the friction to the hand.

Further, still include connecting block and spacing, connecting block fixed connection is at the upper surface that the casing violently managed both sides, spacing is the U type of invering, spacing lower extreme fixed connection is on two connecting blocks. The connecting block and the limiting frame can limit the position of the rotating rod, and the opening and closing process is guaranteed to be stable.

Furthermore, the shell further comprises a connecting flange and a clamping groove, the connecting flange is fixedly connected to two ends of the shell, and the clamping groove is formed in the middle of the connecting flange. The connecting flange is convenient for the connection of external pipelines, and a sealing rubber ring is convenient to install in a clamping groove formed in the inner ring of the connecting flange.

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

1. the lower end of the vertical pipe of the high-pressure-resistant and leak-proof cock valve shell for well drilling adopts an integrated casting sealing structure, so that compared with the traditional combined bolt connection mode, the opening is reduced, the high-pressure-resistant and leak-proof cock valve shell can bear higher pressure, and the leakage probability is reduced;

2. according to the high-pressure-resistant and leak-proof plug valve for well drilling, the scraping piece is arranged on the inner wall of the vertical pipe of the shell, so that residual liquid on the surface of the plug valve can be scraped, and the phenomenon that the contaminated liquid is accumulated for a long time to form attachments to cause abrasion is avoided;

3. according to the high-pressure-resistant and leakage-proof plug valve for drilling, the two groups of sealing structures are arranged at the upper end of the shell, and the upper end of the rotating shaft can be firmly connected through the sealing end covers and the reinforcing sleeve, so that the wear-resistant capacity is improved, and larger pressure is borne.

Drawings

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

In the figure: the sealing device comprises a shell 1, a connecting seat 2, a through groove 3, a working mechanism 4, a rotating shaft 41, a cock 42, a through hole 43, a boss 44, a sealing ring 45, a sealing end cover 46, a reinforcing sleeve 47, a scraping blade 5, a rotating rod 6, a rubber sleeve 7, a connecting block 8, a limiting frame 9, a connecting flange 10 and a clamping groove 11.

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.

Referring to fig. 1, the high pressure resistant and leak proof plug valve for drilling provided by the present invention comprises a housing 1, a connecting seat 2, a through groove 3 and a working mechanism 4;

the shell 1 comprises a transverse pipe and a vertical pipe, the bottom of the vertical pipe of the shell 1 is fixedly connected with a connecting seat 2, and a through groove 3 is formed in the middle of the vertical pipe of the shell 1 in a penetrating manner;

the working mechanism 4 comprises a rotating shaft 41, a cock 42, a through hole 43, a boss 44, a sealing ring 45, a sealing end cover 46 and a reinforcing sleeve 47, wherein the lower end of the rotating shaft 41 is rotatably connected to the connecting seat 2, the cock 42 is arranged in the middle of the rotating shaft 41, the cock 42 is in an inverted round table shape, the through hole 43 is formed in the middle of the cock 42 in a penetrating manner, the boss 44 is arranged at the bottom of the cock 42, the sealing ring 45 is fixedly connected to the inner wall of the vertical pipe of the shell 1 in a position corresponding to the boss 44, the sealing ring 45 is in contact with the boss 44, the sealing end cover 46 is fixedly connected to the upper end of the vertical pipe of the. The lower end of a rotating shaft 41 in the working mechanism 4 is rotatably connected with a connecting seat 2 on a vertical pipe of the shell 1, the number of channels on the shell 1 is reduced, the use effect is guaranteed, meanwhile, the leakage can be reduced, and a boss 44 arranged at the lower end of a cock 42 is matched with a sealing ring 45 to form two sealing lines. The scraper device further comprises a scraper blade 5, the scraper blade 5 is vertically and fixedly connected to the inner wall of the vertical pipe of the shell 1, and the end part of the scraper blade 5 is in contact with the cock 42. The scraper 5 is capable of scraping off the residual liquid on the tap 42. Still include dwang 6 and rubber sleeve 7, the one end fixed connection of dwang 6 is in the upper end of pivot 41, and dwang 6 is perpendicular with pivot 41, and the other end of dwang 6 is fixed to be cup jointed rubber sleeve 7. The rotating shaft 41 can be rotated by transferring the rotating rod 6 by hand, and the rubber sleeve 7 arranged at the end part reduces friction to the hand. Still include connecting block 8 and spacing 9, connecting block 8 fixed connection is on the upper surface of the horizontal pipe both sides of casing 1, and spacing 9 is the U type of invering, and spacing 9's lower extreme fixed connection is on two connecting blocks 8. Connecting block 8 and spacing 9 can inject the position of dwang 6, guarantee the process stability of opening and shutting. The shell is characterized by further comprising a connecting flange 10 and a clamping groove 11, wherein the connecting flange 10 is fixedly connected to two ends of the shell 1, and the clamping groove 11 is formed in the middle of the connecting flange 10. The connecting flange 10 is convenient for the connection of external pipelines, and a sealing rubber ring is convenient to install in a clamping groove 11 arranged on the inner ring of the connecting flange 10.

When the invention is used: the lower end of the rotating shaft 41 in the working mechanism 4 is rotatably connected with the connecting seat 2 on the vertical pipe of the shell 1, so that the leakage can be reduced while the use effect is ensured by reducing the number of channels on the shell 1, and a boss 44 arranged at the lower end of the cock 42 is matched with a sealing ring 45 to form two sealing lines. The scraper 5 is capable of scraping off the residual liquid on the tap 42. The rotating shaft 41 can be rotated by transferring the rotating rod 6 by hand, and the rubber sleeve 7 arranged at the end part reduces friction to the hand. Connecting block 8 and spacing 9 can inject the position of dwang 6, guarantee the process stability of opening and shutting. The connecting flange 10 is convenient for the connection of external pipelines, and a sealing rubber ring is convenient to install in a clamping groove 11 arranged on the inner ring of the connecting flange 10.

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.