阅读说明：本技术 一种上置动力式泥浆密封装置 (Overhead power type slurry sealing device ) 是由 王力凡 王克非 潘洪涛 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种上置动力式泥浆密封装置,涉及泥浆接头领域,包括上连接头,所述上连接头下壁面固定连接有第一中连接套,所述第一中连接套上开设有排浆孔,所述第一中连接套下壁面固定连接有第二中连接套,所以第一中连接套与第二中连接套之间安装有迷宫座,通过机械密封装置将中心轴进行初级密封,通过压紧弹簧对上垫片以及下底座压紧进行密封,当机械密封有泥浆外露时,可以通过排泥孔流出,防止泥浆渗入下端的圆锥滚子轴承内,防止泥浆将圆锥滚子轴承卡顿,通过迷宫座以及迷宫盖配合实现二次密封,提高泥浆密封装置的密封性,本发明结构简单,操作方便,通过二次密封提高泥浆密封装置的工作效率,防止泥浆渗漏,提高泥浆密封装置的密封性。(The invention discloses an upper power type mud sealing device, which relates to the field of mud joints and comprises an upper connector, wherein the lower wall surface of the upper connector is fixedly connected with a first middle connecting sleeve, a mud discharging hole is formed in the first middle connecting sleeve, the lower wall surface of the first middle connecting sleeve is fixedly connected with a second middle connecting sleeve, so that a labyrinth seat is arranged between the first middle connecting sleeve and the second middle connecting sleeve, a central shaft is subjected to primary sealing through a mechanical sealing device, an upper gasket and a lower base are pressed and sealed through a pressing spring, when mud is exposed in the mechanical sealing, the mud can flow out through the mud discharging hole and can be prevented from permeating into a conical roller bearing at the lower end, the mud is prevented from blocking the conical roller bearing, secondary sealing is realized through the matching of the labyrinth seat and the labyrinth cover, and the sealing performance of the mud sealing device is improved. The working efficiency of the slurry sealing device is improved through secondary sealing, slurry leakage is prevented, and the sealing performance of the slurry sealing device is improved.)

1. The utility model provides an overhead power formula mud sealing device, includes connector (1), its characterized in that, go up connector (1) lower wall face fixedly connected with first well adapter sleeve (2), seted up on adapter sleeve (2) in the first row thick liquid hole (3), adapter sleeve (4) in adapter sleeve (2) lower wall face fixedly connected with second in the first, so install maze seat (5) between adapter sleeve (4) in adapter sleeve (2) and the second in the first, adapter sleeve (4) port department installs axle bed (6) in the second, connector (7) under axle bed (6) lower wall face fixedly connected with, install center pin (8) on axle bed (6), center pin (8) run through in adapter sleeve (4), maze seat (5) in the second, adapter sleeve (2) and go up the connector in the first, center pin (8) run through the end and lie in connector (1) inner chamber, center pin (8) run through and install mechanical seal (9) between end and the first well adapter sleeve (2), mechanical seal (9) are connected with first well adapter sleeve (2), the cover is equipped with labyrinth lid (10) on center pin (8), labyrinth lid (10) are connected with labyrinth seat (5), the cover is equipped with a pair of tapered roller bearing (11) that the structure is the same on center pin (8), and is a pair of tapered roller bearing (11) are located adapter sleeve (4) in the second respectively, install oil cup (12) on adapter sleeve (4) side wall face in the second, oil cup (12) are located a pair of between tapered roller bearing (11), oil cup (12) communicate with each other with second in adapter sleeve (4) inner chamber.

2. The overhead dynamic slurry sealing device according to claim 1, wherein the mechanical seal (9) comprises an upper gasket (13), the upper gasket (13) is fixedly mounted at the upper end of a central shaft (8), a fixed sleeve (14) is sleeved on the central shaft (8), the fixed sleeve (14) is in contact with the upper gasket (13), an annular protrusion is arranged at the bottom end of the fixed sleeve (14), a compression spring (15) is sleeved on the fixed sleeve (14), two ends of the compression spring (15) are respectively connected with the upper gasket (13) and the annular protrusion, a lower base (16) is mounted at the lower end of the fixed sleeve (14), the lower base (16) is embedded at the upper end of the first middle connecting sleeve (2), and a sealing ring (17) is mounted between the lower base (16) and the first middle connecting sleeve (2).

3. The upper power type mud sealing device according to claim 2, wherein a first elastic check ring (18) is arranged at the upper end of the central shaft (8), and the first elastic check ring (18) is in contact with the upper gasket (13).

4. The upper dynamic type slurry sealing device according to claim 1, wherein a second elastic check ring (19) is installed at a lower wall face port of the labyrinth seat (5), the second elastic check ring (19) is sleeved on the central shaft (8), a lower gasket (20) is installed at the lower wall face port of the labyrinth seat (5), the lower gasket (20) is located below the second elastic check ring (19), the lower gasket (20) is sleeved on the central shaft (8), and the lower gasket (20) is in contact with the upper tapered roller bearings (4) in the pair of tapered roller bearings (4).

5. The upper power type mud sealing device according to claim 4, wherein the outer wall surface of the second middle connecting sleeve (4) is sleeved with a water jacket (21), and the water jacket (21) is in contact with the outer connecting end of the labyrinth seat (5).

6. The upper power type mud sealing device according to claim 1, wherein an O-shaped ring (22) is arranged between the first middle connecting sleeve (2) and the inner wall surface of the upper connecting head (1).

7. The upper power type mud sealing device according to claim 1, wherein a felt (23) is arranged between the inner wall surface of the second middle connecting sleeve (4) and the shaft seat (6).

8. The upper power type mud sealing device according to claim 1, wherein the shaft seat (6) is provided with a through hole (24), and the diameter of the through hole (24) is equal to the diameter of the inner wall surface of the central shaft (8).

9. The upper power type mud sealing device according to claim 8, wherein the upper connector (1) is provided with a transverse connector (25).

10. The upper power type slurry sealing device according to any one of claims 1 to 9, wherein the outer connecting end of the upper connector (1) is fixedly connected with the outer connecting end of the first middle connecting sleeve (2) and the outer connecting end of the water jacket (21), and the outer connecting end of the labyrinth seat (5) is fixedly connected with the outer connecting end of the second middle connecting sleeve (4) through a hexagonal bolt (26), and a hexagonal nut (27) is screwed on the hexagonal bolt (26).

Technical Field

The invention relates to the field of slurry joints, in particular to an upper power type slurry sealing device.

Background

Along with the development of society and the progress and improvement of science and technology, the living standard of people is gradually improved, and the underground well drilling is remarkably improved, mud needs to be injected into a well while the well is drilled, because the driving end of a well drilling device is generally in an upper power type, and the mud needs to be injected continuously while a drill rod rotates, so that the sealing protection of a mud joint is needed, for example, in an invention patent named as a bidirectional cement mixing pile machine with a publication number of CN101575851B, two or two layers of sealing rings are designed in a sealing cover, in order to prevent the mud from entering into a transmission system and increase the friction force between an inner drill bit and an outer drill bit, the invention is further characterized in that a sealing element is arranged between the lower end of the outer drill bit and the inner drill bit, the existing sealing device is sealed only through the mutual matching of the sealing ring and the sealing cover and is realized through one-time sealing, therefore, the sealing performance of the sealing device is poor, and the sealing of the sealing device is not strict easily, so that slurry is exposed, the working efficiency of the sealing device is reduced, and the precision of the sealing device is improved.

Disclosure of Invention

The invention aims to solve the problems and designs an upper power type mud sealing device.

The technical scheme of the invention for realizing the aim is that the upper power type mud sealing device comprises an upper connector, wherein a first middle connecting sleeve is fixedly connected to the lower wall surface of the upper connector, a mud discharging hole is formed in the first middle connecting sleeve, a second middle connecting sleeve is fixedly connected to the lower wall surface of the first middle connecting sleeve, so that a labyrinth seat is arranged between the first middle connecting sleeve and the second middle connecting sleeve, a shaft seat is arranged at the port of the second middle connecting sleeve, a lower connector is fixedly connected to the lower wall surface of the shaft seat, a central shaft is arranged on the shaft seat and penetrates through the second middle connecting sleeve, the labyrinth seat, the first middle connecting sleeve and the upper connector, the penetrating end of the central shaft is positioned in the inner cavity of the upper connector, a mechanical seal is arranged between the penetrating end of the central shaft and the first middle connecting sleeve, and the mechanical seal is connected with, the central shaft is sleeved with a labyrinth cover, the labyrinth cover is connected with a labyrinth seat, the central shaft is sleeved with a pair of tapered roller bearings with the same structure, the tapered roller bearings are located in the second middle connecting sleeve respectively, an oil cup is mounted on the side wall surface of the second middle connecting sleeve and located between the tapered roller bearings, and the inner cavity of the second middle connecting sleeve is communicated with the inner cavity of the second middle connecting sleeve.

The mechanical seal includes the gasket, go up gasket fixed mounting in the center pin upper end, the cover is equipped with fixed cover on the center pin, fixed cover contacts with last gasket, fixed cover bottom is equipped with annular protrusion, fixed cover is equipped with pressure spring on, the pressure spring both ends are connected with last gasket and annular protrusion respectively, the base is installed down to fixed cover lower extreme, the base inlays the dress in first well adapter sleeve upper end down, install the sealing washer down between base and the first well adapter sleeve.

A first elastic check ring is installed at the upper end of the central shaft and is in contact with the upper gasket.

The improved bearing is characterized in that a second elastic check ring is installed at the lower wall face port of the labyrinth seat, the second elastic check ring is sleeved on the central shaft, a lower gasket is installed at the lower wall face port of the labyrinth seat, the lower gasket is located below the second elastic check ring, the lower gasket is sleeved on the central shaft, and the lower gasket is in contact with the upper tapered roller bearings in the pair of tapered roller bearings.

And the outer wall surface of the second middle connecting sleeve is sleeved with a water jacket, and the water jacket is in contact with the outer connecting end of the labyrinth seat.

An O-shaped ring is arranged between the first middle connecting sleeve and the inner wall surface of the upper connector.

And a felt ring is arranged between the inner wall surface of the second middle connecting sleeve and the shaft seat.

The shaft seat is provided with a through hole, and the diameter of the through hole is equal to the diameter of the inner wall surface of the central shaft.

And the upper connector is provided with a transverse connector.

The outer connecting end of the upper connector is fixedly connected with the outer connecting end of the first middle connecting sleeve and the outer connecting end of the water jacket, the outer connecting end of the labyrinth seat is fixedly connected with the outer connecting end of the second middle connecting sleeve through hexagon bolts respectively, and hexagon nuts are screwed on the hexagon bolts.

The invention relates to an upper power type slurry sealing device manufactured by the technical scheme, which is characterized in that a central shaft is primarily sealed by a mechanical sealing device, an upper gasket and a lower base are tightly pressed by a compression spring for sealing, when slurry is exposed in the mechanical sealing, the slurry can flow out through a sludge discharge hole and is prevented from permeating into a tapered roller bearing at the lower end, the tapered roller bearing is prevented from being clamped by the slurry, secondary sealing is realized by matching a labyrinth seat and a labyrinth cover, and the sealing performance of the slurry sealing device is improved.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is an enlarged view of a portion of the present invention;

in the figure, 1-upper connector; 2-a first middle connecting sleeve; 3-slurry discharge holes; 4-a second middle connecting sleeve; 5-a labyrinth seat; 6-shaft seat; 7-lower connector; 8-central axis; 9-mechanical sealing; 10-a labyrinth cover; 11-tapered roller bearings; 12-oil cup; 13-upper gasket; 14-a fixation sleeve; 15-a compression spring; 16-a lower base; 17-a sealing ring; 18-a first circlip; 19-a second circlip; 20-lower gasket; 21-water jacket; 22-O-shaped ring; 23-a felt ring; 24-a via hole; 25-a transverse connector; 26-hex bolts; 27-hexagonal nut.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings, and as shown in fig. 1-3, an upper dynamic slurry sealing device includes an upper connector 1, a first middle connector 2 is fixedly connected to a lower wall surface of the upper connector 1, a slurry discharge hole 3 is formed in the first middle connector 2, a second middle connector 4 is fixedly connected to a lower wall surface of the first middle connector 2, so that a labyrinth seat 5 is installed between the first middle connector 2 and the second middle connector 4, a shaft seat 6 is installed at a port of the second middle connector 4, a lower connector 7 is fixedly connected to a lower wall surface of the shaft seat 6, a central shaft 8 is installed on the shaft seat 6, the central shaft 8 penetrates through the second middle connector 4, the labyrinth seat 5, the first middle connector 2 and the upper connector, a penetrating end of the central shaft 8 is located in an inner cavity of the upper connector 1, and a mechanical seal 9 is installed between a penetrating end of the central shaft 8 and the first middle connector 2, the mechanical seal 9 is connected with the first middle connecting sleeve 2, the central shaft 8 is sleeved with a labyrinth cover 10, the labyrinth cover 10 is connected with a labyrinth seat 5, the central shaft 8 is sleeved with a pair of tapered roller bearings 11 with the same structure, the tapered roller bearings 11 are respectively positioned in the second middle connecting sleeve 4, an oil cup 12 is arranged on the side wall surface of the second middle connecting sleeve 4, the oil cup 12 is positioned between the tapered roller bearings 11, the inner cavity of the connecting sleeve 4 is communicated with the oil cup 12 in the second middle, the mechanical seal 9 comprises an upper gasket 13, the upper gasket 13 is fixedly arranged at the upper end of the central shaft 8, the central shaft 8 is sleeved with a fixed sleeve 14, the fixed sleeve 14 is contacted with the upper gasket 13, the bottom end of the fixed sleeve 14 is provided with an annular bulge, the fixed sleeve 14 is sleeved with a compression spring 15, and two ends of the compression spring 15 are respectively connected with the upper gasket 13 and, the lower end of the fixed sleeve 14 is provided with a lower base 16, the lower base 16 is embedded at the upper end of a first middle connecting sleeve 2, a sealing ring 17 is arranged between the lower base 16 and the first middle connecting sleeve 2, the upper end of the central shaft 8 is provided with a first elastic retainer ring 18, the first elastic retainer ring 18 is contacted with an upper gasket 13, a second elastic retainer ring 19 is arranged at the lower wall surface port of the labyrinth seat 5, the second elastic retainer ring 19 is sleeved on the central shaft 8, a lower gasket 20 is arranged at the lower wall surface port of the labyrinth seat 5, the lower gasket 20 is positioned below the second elastic retainer ring 19, the lower gasket 20 is sleeved on the central shaft 8, the lower gasket 20 is contacted with a pair of conical roller bearings 4 at the upper ends of the conical roller bearings 4, the outer wall surface of the second middle connecting sleeve 4 is sleeved with a water jacket 21, and the water jacket 21 is contacted with the outer connecting end of, install O type circle 22 between adapter sleeve 2 and the 1 internal face of last connector in the first, install felt 23 between 4 internal faces of adapter sleeve and the axle bed 6 in the second, be equipped with through-hole 24 on the axle bed 6, through-hole 24 diameter equals 8 internal face diameters of center pin, upward be equipped with transverse connection head 25 on the connector 1, go up and connect respectively through hex bolts 26 fixed connection between 2 outer joint ends of adapter sleeve and water jacket 21 outer joint end, 5 outer joint ends of labyrinth seat and the 4 outer joint ends of adapter sleeve in 1 outer joint end of connector and the first, hex bolts 26 top spin has connect hex nuts 27.

The embodiment is characterized by comprising an upper connector 1, wherein a first middle connecting sleeve 2 is fixedly connected to the lower wall surface of the upper connector 1, a grout discharging hole 3 is formed in the first middle connecting sleeve 2, a second middle connecting sleeve 4 is fixedly connected to the lower wall surface of the first middle connecting sleeve 2, a labyrinth seat 5 is arranged between the first middle connecting sleeve 2 and the second middle connecting sleeve 4, a shaft seat 6 is arranged at the port of the second middle connecting sleeve 4, a lower connecting sleeve 7 is fixedly connected to the lower wall surface of the shaft seat 6, a central shaft 8 is arranged on the shaft seat 6, the central shaft 8 penetrates through the second middle connecting sleeve 4, the labyrinth seat 5, the first middle connecting sleeve 2 and the upper connector, the penetrating end of the central shaft 8 is positioned in the inner cavity of the upper connector 1, a mechanical seal 9 is arranged between the penetrating end of the central shaft 8 and the first middle connecting sleeve 2, the mechanical seal 9 is connected, the labyrinth cover 10 is connected with the labyrinth seat 5, the central shaft 8 is sleeved with a pair of tapered roller bearings 11 with the same structure, the pair of tapered roller bearings 11 are respectively positioned in the second middle connecting sleeve 4, the side wall surface of the second middle connecting sleeve 4 is provided with an oil cup 12, the oil cup 12 is positioned between the pair of tapered roller bearings 11, the oil cup 12 is communicated with the inner cavity of the second middle connecting sleeve 4, the central shaft is subjected to primary sealing through a mechanical sealing device, an upper gasket and a lower base are pressed and sealed through a pressing spring, when slurry is exposed in mechanical sealing, the slurry can flow out through a mud discharging hole to prevent the slurry from permeating into the tapered roller bearing at the lower end, the slurry is prevented from blocking the tapered roller bearings, secondary sealing is realized through the matching of the labyrinth seat and the labyrinth cover, and the sealing performance of the slurry sealing device is improved. Prevent the mud seepage, improve the leakproofness of mud sealing device.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.