Petroleum mechanical sealing device

Abstract

The invention relates to the technical field of petroleum transportation, in particular to a petroleum mechanical sealing device which comprises a mounting seat, a control mechanism is mounted on the mounting seat, a driving mechanism is mounted on the control mechanism, a discharging mechanism is mounted at the bottom of the mounting seat, and a sealing mechanism is mounted on the control mechanism. Protection mechanisms are mounted at the two ends of the mounting seat, and locking mechanisms are mounted in the two ends of the mounting seat; through cooperative installation of the control mechanism and the installation base, on-off control over a pipeline is facilitated, disassembly, assembly and maintenance are facilitated, the sealing effect on the interior of the control mechanism is good through the sealing mechanism, meanwhile, follow-up maintenance is facilitated, the control mechanism is conveniently driven and controlled through the driving mechanism, and residual oil liquid is conveniently guided out through the discharging mechanism; closing protection during maintenance of the two ends of the mounting base is achieved through the protection mechanism, driving control over the locking mechanism is achieved through work of the protection mechanism, and the locking mechanism conducts locking protection on the control mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum transportation, in particular to a petroleum mechanical sealing device. Background Art

[0002] Petroleum refers to a mixture of gaseous, liquid and solid hydrocarbons with natural occurrence. Petroleum is divided into crude oil, natural gas, natural gas liquids and natural tar. Petroleum is a viscous, dark brown liquid, known as the "blood of industry". In the process of petroleum transportation, most of the time different pipelines are built to transport petroleum to different areas for production and use. When transporting petroleum in pipelines, valves need to be installed to control the oil output and on-off control, so as to facilitate the transportation and use of petroleum.

[0003] However, in the use of petroleum mechanical valves, when traditional valves seal the internal valve core, most of them use a fixed sealing ring to fit the valve core and seal it. After the valve core has worked for a long time, the sealing ring lacks elasticity, resulting in poor sealing effect, which makes the oil easy to overflow. In addition, when the valve seals, it is necessary to close the equipment or the entire pipeline, and then disassemble and maintain the corresponding valve, and then install it again. This makes the disassembly and assembly operations inconvenient, and it is also necessary to control the start and stop of the equipment or the on-off of the pipeline, which can easily affect the oil transportation of other pipelines. At the same time, the back and forth operation is time-consuming and labor-intensive. When the valve is controlled, since most valves are controlled by a drive disk, it is very difficult to turn the valve for the first time when it has not been operated for a certain period of time. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a petroleum mechanical sealing device.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a petroleum mechanical sealing device, including a mounting seat, a control mechanism is installed on the mounting seat, a driving mechanism is installed on the control mechanism, a discharge mechanism is installed at the bottom of the mounting seat, a sealing mechanism is installed on the control mechanism, protective mechanisms are installed at both ends of the mounting seat, and locking mechanisms are installed inside the two ends of the mounting seat.

[0006] Specifically, the control mechanism includes a slot, a slot is provided at the center of the interior of the mounting seat, the top of the slot extends to the outside of the top of the mounting seat, a connecting seat is installed on the mounting seat, the connecting seat is engaged with the interior of the mounting seat through the slot, the connecting seat is detachably connected to the mounting seat through multiple bolts, through grooves are respectively provided at both ends of the mounting seat and the connecting seat, connecting sleeves are threadedly connected at both ends of the mounting seat, a valve core is installed inside the connecting seat, and the top of the valve core extends to the outside of the top of the connecting seat.

[0007] Specifically, sealing pads are respectively installed at the centers of the outer sides of the two connecting sleeves, a sealing cover is provided inside the slot, the sealing cover is connected to the inner wall of the mounting seat, and the outer side of the bottom of the connecting seat is in contact with the sealing cover.

[0008] Specifically, a slot is provided at the center line of the bottom side wall of the connecting seat, the slot is a "U"-shaped structure, a rubber pad is provided inside the slot, the center line of the side wall of the sealing cover is a "convex"-shaped structure, and the side wall of the sealing cover extends to the inside of the slot and contacts the rubber pad.

[0009] Specifically, the sealing mechanism includes a pressure groove, and the side walls at both ends of the connecting seat are provided with pressure grooves, the pressure grooves are connected to the through grooves, and sealing rings are respectively provided inside the two pressure grooves, the two sealing rings are symmetrically distributed, and the opposite sides of the two sealing rings respectively contact the valve core, and annular cover plates are respectively provided on the outer sides of the two ends of the connecting seat, and the cover plates are engaged with the pressure grooves. The two cover plates are detachably connected to the outer side of the connecting seat through multiple screws, and multiple annularly distributed contact springs are connected between the sealing rings and the cover plates.

[0010] Specifically, one side of the two cover plates is vertically connected with a plurality of guide rods distributed in an annular shape, one side of the two sealing rings is provided with a plurality of guide grooves distributed in an annular shape and at equal intervals, and the plurality of guide rods penetrate through a plurality of resistance springs and are slidably connected to the inside of the guide grooves.

[0011] Specifically, the protective mechanism includes a sealing plate, and sealing plates are respectively installed inside the two ends of the mounting seat, the sealing plates are slidably connected to the inner side of the mounting seat through a movable groove, the sealing plates are slidably connected to the inside of the through groove, a through hole is provided on the sealing plate, and the through hole is connected to the through groove, the inner sides of the bottoms of the two ends of the mounting seat are respectively rotatably connected with threaded rods, the bottoms of the two threaded rods extend to the outside of the mounting seat, and the tops of the two threaded rods are respectively threadedly connected to the center line inside the sealing plate.

[0012] Specifically, the locking mechanism includes a limit groove, two limit grooves are respectively provided on the bottom sides of both ends of the connecting seat, two limit rods are respectively provided inside the two ends of the mounting seat, the limit rod is slidably connected to the inside of the mounting seat through a return spring, one end of the limit rod extends into the limit groove, and a push rod is installed at the other end of the limit rod, one end of the push rod is a hemispherical structure, and one end of the push rod is in conflict with the side wall of the sealing plate.

[0013] Specifically, the driving mechanism includes a driving rod, a driving rod is installed on the top of the valve core, a driving disk is installed on the top of the driving rod, a rotating groove is provided on the top of the valve core, a fixed shaft is fixedly connected to the rotating groove at the center, the bottom of the driving rod is rotatably connected to the rotating groove through the fixed shaft, and a torsion spring is connected between the fixed shaft and the inside of the driving rod.

[0014] Specifically, the discharge mechanism includes a drainage groove, and a drainage groove is provided on the inner side of the bottom of the mounting seat. The bottom of the drainage groove extends to the outside of the mounting seat, and the top of the drainage groove extends to the inside of the slot. The drainage groove is a cylindrical "T"-shaped structure.

[0015] Specifically, a conical conduit is installed at the bottom of the mounting seat, and the conical conduit is located at the bottom of the drainage groove. A leather plug is installed at the bottom of the rubber pad, and the leather plug is a conical structure. The bottom of the leather plug is engaged with the inner side of the top of the drainage groove.

[0016] The beneficial effects of the present invention are: (1) The petroleum mechanical sealing device described in the present invention is conducive to realizing pipeline on-off control through the coordinated installation of the control mechanism and the mounting seat, and is convenient for disassembly and maintenance. At the same time, the installation position can be adjusted, and the connection is more convenient.

[0017] (2) The petroleum machinery sealing device described in the present invention has a good sealing effect on the inside of the control mechanism through the installation of the sealing mechanism, and is convenient for subsequent maintenance, thereby improving the maintenance efficiency.

[0018] (3) The petroleum mechanical sealing device described in the present invention can be more conveniently driven and controlled by the driving mechanism through the coordinated installation, and the operation is convenient and labor-saving.

[0019] (4) The petroleum mechanical sealing device described in the present invention facilitates the discharge of residual oil through the installation of the discharge mechanism, and realizes closed protection at both ends of the mounting seat during maintenance through the cooperation of the protection mechanism, thereby preventing oil from overflowing and affecting the maintenance work.

[0020] (5) The petroleum mechanical sealing device described in the present invention facilitates the closed protection of the control mechanism through the protection mechanism. At the same time, through the operation of the protection mechanism, the driving control of the locking mechanism is realized, so that the locking mechanism locks and protects the control mechanism, and the control mechanism and the mounting seat are stably and firmly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 A schematic diagram of the overall structure provided by the present invention; Figure 2 It is a schematic diagram of the exploded structure of the connecting seat and the mounting seat of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the valve core and the connecting seat of the present invention; Figure 4 It is a schematic diagram of the connection structure between the torsion spring and the fixed shaft of the present invention; Figure 5 It is a schematic diagram of the connection structure between the interference spring and the sealing ring of the present invention; Figure 6 It is a schematic diagram of the connection structure between the pressing groove and the connecting seat of the present invention; Figure 7 It is a schematic diagram of the connection structure between the rubber pad and the connection seat of the present invention; Figure 8 It is a schematic diagram of the connection structure between the connecting sleeve and the mounting seat of the present invention; Fig. 9 It is a structural schematic diagram of the sealing cover of the present invention; Fig.10 It is a schematic diagram of the connection structure between the threaded rod and the sealing plate of the present invention; Fig.11 It is a schematic diagram of the connection structure between the return spring and the limit rod of the present invention.

[0023] In the figure: 1, mounting seat; 2, control mechanism; 201, connecting sleeve; 202, sealing gasket; 203, connecting seat; 204, valve core; 205, slot; 206, through slot; 207, card slot; 208, bolt; 209, rubber pad; 210, sealing cover; 3, discharge mechanism; 301, leather plug; 302, drainage groove; 303, conduit; 4, sealing mechanism; 401, cover plate; 402, sealing ring; 403, screw; 4 04. Resistance spring; 405. Guide groove; 406. Pressure groove; 407. Guide rod; 5. Protection mechanism; 501. Sealing plate; 502. Threaded rod; 503. Movable groove; 504. Through hole; 6. Locking mechanism; 601. Limiting groove; 602. Limiting rod; 603. Return spring; 604. Push rod; 7. Driving mechanism; 701. Driving disk; 702. Driving rod; 703. Rotating groove; 704. Fixed shaft; 705. Torsion spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] like Figure 1 , Figure 2 , Figure 5 , Figure 8 , Fig.10 and Fig.11 As shown, a petroleum mechanical sealing device described in the present invention includes a mounting seat 1, a control mechanism 2 is installed on the mounting seat 1, a driving mechanism 7 is installed on the control mechanism 2, a discharge mechanism 3 is installed at the bottom of the mounting seat 1, a sealing mechanism 4 is installed on the control mechanism 2, protective mechanisms 5 are installed at both ends of the mounting seat 1, and locking mechanisms 6 are installed inside the two ends of the mounting seat 1.

[0026] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 8 As shown, the control mechanism 2 includes a slot 205, a slot 205 is provided at the center of the interior of the mounting seat 1, the top of the slot 205 extends to the outside of the top of the mounting seat 1, a connecting seat 203 is installed on the mounting seat 1, the connecting seat 203 is engaged with the interior of the mounting seat 1 through the slot 205, the connecting seat 203 is detachably connected to the mounting seat 1 through a plurality of bolts 208, through grooves 206 are respectively provided at both ends of the mounting seat 1 and the connecting seat 203, connecting sleeves 201 are threadedly connected at both ends of the mounting seat 1, a valve core 204 is installed inside the connecting seat 203, and the top of the valve core 204 extends to the connecting seat 1. On the outside of the top of the connecting seat 203, through the opening of the slot 205, the bottom of the connecting seat 203 can be snap-connected with the mounting seat 1, and through the cooperation of the plurality of bolts 208, the connection between the connecting seat 203 and the mounting seat 1 is stable, and convenient for subsequent quick disassembly and maintenance. The installation of the valve core 204 and the connecting seat 203 facilitates the on-off control of the through grooves 206 at both ends of the connecting seat 203. The connection of the two connecting sleeves 201 facilitates the connection of the two pipelines, thereby realizing the on-off control of the two pipelines, realizing the circulation and disconnection of the oil, and further realizing the control of the oil circuit.

[0027] Specifically, Figure 8 and Fig. 9 As shown, sealing gaskets 202 are respectively installed at the center of the outer sides of the two connecting sleeves 201, and a sealing cover 210 is provided inside the slot 205. The sealing cover 210 is connected to the inner wall of the mounting seat 1, and the outer side of the bottom of the connecting seat 203 is fitted with the sealing cover 210. Through the installation of the sealing gasket 202, the connection between the connecting sleeve 201 and the external pipeline is sealed well. Through the installation of the sealing cover 210, the connection seat 203 and the mounting seat 1 are sealed well after installation, and the oil will not overflow. In addition, the disassembly of the connecting seat 203 facilitates the replacement and maintenance of the sealing cover 210.

[0028] Specifically, Figure 6 and Figure 7 As shown, a card slot 207 is provided at the center line of the bottom side wall of the connecting seat 203, and the card slot 207 is a "U"-shaped structure. A rubber pad 209 is provided inside the card slot 207. The center line of the side wall of the sealing cover 210 is a "convex"-shaped structure. The side wall of the sealing cover 210 extends to the inside of the card slot 207 and contacts the rubber pad 209. The opening of the card slot 207 facilitates the stable engagement between the connecting seat 203 and the inside of the mounting seat 1 and will not loosen, thereby playing a role in guiding and positioning. At the same time, the rubber pad 209 fits tightly with the sealing cover 210 to achieve better sealing and prevent oil from flowing and overflowing.

[0029] Specifically, Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the sealing mechanism 4 includes a pressing groove 406, and the side walls at both ends of the connecting seat 203 are provided with pressing grooves 406, and the pressing grooves 406 are communicated with the through grooves 206. The two pressing grooves 406 are respectively provided with sealing rings 402 inside, and the two sealing rings 402 are symmetrically distributed. The opposite sides of the two sealing rings 402 are respectively in contact with the valve core 204, and the outer sides of the two ends of the connecting seat 203 are respectively provided with annular cover plates 401, and the cover plates 401 are engaged with the pressing grooves 406. The two cover plates 401 are detachably connected to the outer side of the connecting seat 203 through a plurality of screws 403. The sealing rings A plurality of annularly distributed resistance springs 404 are connected between 402 and the cover plate 401. The opening of the pressure groove 406 facilitates the installation of the sealing ring 402 and the cover plate 401. The cooperation of the plurality of screw rods 403 allows the cover plate 401 to be stably installed. With the cooperation of the cover plate 401, the plurality of resistance springs 404 resist the sealing ring 402. The sealing ring 402 fits tightly with the valve core 204 to achieve better sealing. The sealing ring 402 always maintains resistance to the valve core 204 to compensate for wear.

[0030] Specifically, Figure 5 and Figure 7 As shown, one side of the two cover plates 401 is vertically connected with a plurality of guide rods 407 distributed in an annular shape, and one side of the two sealing rings 402 is provided with a plurality of guide grooves 405 distributed in an annular shape and at equal intervals. The plurality of guide rods 407 penetrate through the plurality of resistance springs 404 and are slidably connected with the inside of the guide grooves 405. By opening the guide grooves 405, the guide rods 407 are inserted into the inside of the guide grooves 405. When the sealing rings 402 slide, they slide smoothly and stably with the cooperation of the guide rods 407 and the guide grooves 405, and the resistance springs 404 will not be squeezed, deformed or damaged.

[0031] Specifically, Figure 8 and Fig.10As shown, the protection mechanism 5 includes a sealing plate 501, and sealing plates 501 are respectively installed inside the two ends of the mounting seat 1. The sealing plate 501 is slidably connected to the inner side of the mounting seat 1 through a movable groove 503. The sealing plate 501 is slidably connected to the inside of the through groove 206. A through hole 504 is provided on the sealing plate 501, and the through hole 504 is connected to the through groove 206. The inner sides of the bottoms of the two ends of the mounting seat 1 are rotatably connected with threaded rods 502, and the bottoms of the two threaded rods 502 extend to the outside of the mounting seat 1. The tops of the two threaded rods 502 are respectively connected to the sealing plate 5 01 is threadedly connected at the inner center line, and the installation of the sealing plate 501 facilitates the blocking of the through groove 206, so that the oil in the two pipes will not flow, and it is convenient to disassemble and maintain the connecting seat 203, and the oil will not overflow. By driving the two threaded rods 502, the threaded rods 502 drive the sealing plate 501 to descend under the action of the threads, which facilitates the communication between the through hole 504 on the sealing plate 501 and the through groove 206, so that the oil enters the interior of the connecting seat 203, and it is convenient to control the on and off of the oil through the valve core 204.

[0032] Specifically, Figure 6 , Figure 8 and Fig.11 As shown, the locking mechanism 6 includes a limiting groove 601, two limiting grooves 601 are respectively provided on the bottom sides of both ends of the connecting seat 203, and two limiting rods 602 are respectively provided inside the two ends of the mounting seat 1. The limiting rod 602 is slidably connected with the inside of the mounting seat 1 through a reset spring 603. One end of the limiting rod 602 extends to the inside of the limiting groove 601, and a push rod 604 is installed at the other end of the limiting rod 602. One end of the push rod 604 is a hemispherical structure. One end of the push rod 604 contacts the side wall of the sealing plate 501. When the sealing plate 501 is reset to allow the oil to flow, the sealing The sealing plate 501 drives the push rod 604 to resist the limiting rod 602, and the limiting rod 602 breaks away from the elastic force of the reset spring 603 and is inserted into the limiting groove 601 to limit the connecting seat 203. The connecting seat 203 is installed stably and firmly. When the sealing plate 501 slides to close the through groove 206, the push rod 604 is separated from the sealing plate 501, and the limiting rod 602 resists and slides under the elastic force of the reset spring 603, and the limiting rod 602 is separated from the limiting groove 601, so that the connecting seat 203 is easy to disassemble and maintain.

[0033] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the driving mechanism 7 includes a driving rod 702, a driving rod 702 is installed on the top of the valve core 204, a driving disk 701 is installed on the top of the driving rod 702, a rotating groove 703 is provided on the top of the valve core 204, a fixed shaft 704 is fixedly connected at the center of the rotating groove 703, the bottom of the driving rod 702 is rotatably connected to the rotating groove 703 through the fixed shaft 704, a torsion spring 705 is connected between the fixed shaft 704 and the inside of the driving rod 702, and the installation of the driving rod 702 is conducive to supporting and connecting the driving disk 701, so that the driving rod 702 drives the driving rod 702 to rotate. The valve core 204 is controlled to realize the opening and closing of the connecting seat 203. The driving rod 702 is kept in a vertical state by installing the fixed shaft 704 and the torsion spring 705. By rotating the driving rod 702, the driving rod 702 gets rid of the elastic force of the torsion spring 705 and rotates with the rotating groove 703. The driving rod 702 rotates 90 degrees, which increases the length of the force arm, making it easier for the driving rod 702 to drive the valve core 204. Then, the external force of the driving rod 702 is removed, and the driving rod 702 is reset to a vertical state, which facilitates the control of the valve core 204 by the driving disk 701.

[0034] Specifically, Figure 7 and Figure 8 As shown, the discharge mechanism 3 includes a drainage groove 302. The drainage groove 302 is provided on the inner side of the bottom of the mounting seat 1. The bottom of the drainage groove 302 extends to the outside of the mounting seat 1, and the top of the drainage groove 302 extends to the inside of the slot 205. The drainage groove 302 is a cylindrical "T"-shaped structure. The opening of the drainage groove 302 facilitates the disassembly and separation of the connecting seat 203 and the mounting seat 1, and the oil remaining in the slot 205 will be discharged and cleaned through the drainage groove 302. After the connecting seat 203 and the mounting seat 1 are installed, the rubber pad 209 blocks the top of the drainage groove 302 to prevent the oil from overflowing.

[0035] Specifically, Figure 7 and Figure 8 As shown, a conical conduit 303 is installed at the bottom of the mounting seat 1, and the conical conduit 303 is located at the bottom of the drainage groove 302. A leather plug 301 is installed at the bottom of the rubber pad 209. The leather plug 301 is a conical structure, and the bottom of the leather plug 301 is engaged with the inner side of the top of the drainage groove 302. The installation of the leather plug 301 is conducive to the tight blockage of the drainage groove 302. The installation of the conduit 303 allows the oil to be well discharged without being dispersed at the bottom of the mounting seat 1 to cause pollution.

[0036] When the present invention is in use, firstly, the slot 205 is opened so that the bottom of the connecting seat 203 can be snap-connected with the mounting seat 1. The connection between the connecting seat 203 and the mounting seat 1 is stable through the cooperation of a plurality of bolts 208, and is convenient for subsequent quick disassembly and maintenance. The installation of the valve core 204 and the connecting seat 203 facilitates the on-off control of the through slots 206 at both ends of the connecting seat 203. The connection of the two connecting sleeves 201 facilitates the connection of the two pipelines, thereby realizing the on-off control of the two pipelines, realizing the circulation and disconnection of the oil, and further realizing the control of the oil circuit. The installation of the sealing gasket 202 makes the connection between the connecting sleeve 201 and the external pipeline have good sealing performance. The installation of the sealing cover 210 makes the connection seat 203 and the mounting seat 1 have good sealing performance after installation, and the oil It will not overflow, and the disassembly of the connecting seat 203 is convenient for replacing and maintaining the sealing cover 210. The opening of the card slot 207 is convenient for the connecting seat 203 to be stably engaged with the inside of the mounting seat 1 and will not loosen, thereby playing a guiding and positioning role. At the same time, the rubber pad 209 is tightly fitted with the sealing cover 210 to make the sealing better and the oil will not flow and overflow. The opening of the pressure groove 406 is convenient for installing the sealing ring 402 and the cover plate 401. The cooperation of multiple screws 403 makes the installation of the cover plate 401 stable. With the cooperation of the cover plate 401, multiple resistance springs 404 are made to resist the sealing ring 402, and the sealing ring 402 is tightly fitted with the valve core 204 to make the sealing better, and the sealing ring 402 always keeps in contact with the valve core 204, thereby playing a role of wear compensation. The guide groove 405 is opened to allow the guide rod 407 to be inserted into the guide groove 405. When the sealing ring 402 slides, the guide rod 407 and the guide groove 405 cooperate to slide smoothly and stably, and the resistance spring 404 will not be squeezed, deformed or damaged. The installation of the driving rod 702 is conducive to supporting and connecting the driving disk 701, so that the driving disk 701 drives the driving rod 702 to control the valve core 204, and the opening and closing of the connection seat 203 is realized. The driving rod 702 is kept in a vertical state by the installation of the fixed shaft 704 and the torsion spring 705. By rotating the driving rod 702, the driving rod 702 is freed from the elastic force of the torsion spring 705 and rotates with the rotating groove 703. The driving rod 702 rotates 90 degrees, which increases the length of the force arm, so that the driving rod 702 drives the valve core 204. After the drive rod 702 is removed, the drive rod 702 is reset to a vertical state, which is convenient for controlling the valve core 204 through the drive disc 701. The opening of the drainage groove 302 facilitates the disassembly and separation of the connecting seat 203 and the mounting seat 1. The oil remaining in the slot 205 will be discharged and cleaned through the drainage groove 302. After the connecting seat 203 and the mounting seat 1 are installed, the rubber pad 209 blocks the top of the drainage groove 302 to prevent the oil from overflowing. The installation of the leather plug 301 facilitates the tight blocking of the drainage groove 302. The installation of the conduit 303 allows the oil to be well discharged and will not be dispersed at the bottom of the mounting seat 1 to cause pollution. When the sealing plate 501 is reset to allow the oil to flow, the sealing plate 501 drives the top rod 604 to resist the limit rod 602.The limiting rod 602 is freed from the elastic force of the return spring 603 and inserted into the limiting groove 601 to limit the connection seat 203. The connection seat 203 is installed stably and firmly. When the sealing plate 501 slides to close the through groove 206, the top rod 604 separates from the sealing plate 501, and the limiting rod 602 slides against the elastic force of the return spring 603, and the limiting rod 602 separates from the limiting groove 601, so that the connection seat 203 is easy to disassemble and maintain.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A petroleum mechanical sealing device, characterized in that: The mounting seat (1) comprises a control mechanism (2) mounted on the mounting seat (1), a driving mechanism (7) mounted on the control mechanism (2), a discharge mechanism (3) mounted on the bottom of the mounting seat (1), a sealing mechanism (4) mounted on the control mechanism (2), protective mechanisms (5) mounted at both ends of the mounting seat (1), and locking mechanisms (6) mounted inside both ends of the mounting seat (1); The control mechanism (2) comprises a slot (205), a slot (205) is provided at the center of the interior of the mounting seat (1), the top of the slot (205) extends to the outside of the top of the mounting seat (1), a connecting seat (203) is installed on the mounting seat (1), the connecting seat (203) is engaged with the interior of the mounting seat (1) via the slot (205), the connecting seat (203) is detachably connected to the mounting seat (1) via a plurality of bolts (208), through slots (206) are respectively provided at both ends of the mounting seat (1) and the connecting seat (203), connecting sleeves (201) are threadedly connected at both ends of the mounting seat (1), a valve core (204) is installed inside the connecting seat (203), and the top of the valve core (204) extends to the outside of the top of the connecting seat (203); The sealing mechanism (4) comprises a pressing groove (406). The side walls at both ends of the connecting seat (203) are provided with pressing grooves (406). The pressing grooves (406) are communicated with the through grooves (206). Two sealing rings (402) are respectively provided inside the two pressing grooves (406). The two sealing rings (402) are symmetrically distributed. The opposite sides of the two sealing rings (402) respectively contact the valve core (204). Annular cover plates (401) are respectively provided on the outer sides of both ends of the connecting seat (203). The cover plates (401) are engaged with the pressing grooves (406). The two cover plates (401) are detachably connected to the outer side of the connecting seat (203) via a plurality of screw rods (403). A plurality of annularly distributed contact springs (404) are connected between the sealing rings (402) and the cover plates (401).

2. A petroleum mechanical sealing device according to claim 1, characterized in that: Sealing pads (202) are respectively installed at the centers of the outer sides of the two connecting sleeves (201), a sealing cover (210) is provided inside the slot (205), the sealing cover (210) is connected to the inner wall of the mounting seat (1), and the outer side of the bottom of the connecting seat (203) is in contact with the sealing cover (210).

3. A petroleum mechanical sealing device according to claim 2, characterized in that: A slot (207) is provided at the midline of the side wall at the bottom of the connection seat (203); the slot (207) is a "U"-shaped structure; a rubber pad (209) is provided inside the slot (207); a side wall of the sealing cover (210) is a "convex"-shaped structure at the midline; the side wall of the sealing cover (210) extends to the inside of the slot (207) and contacts the rubber pad (209).

4. A petroleum mechanical sealing device according to claim 1, characterized in that: A plurality of guide rods (407) distributed in an annular shape are vertically connected to one side of the two cover plates (401), a plurality of guide grooves (405) distributed in an annular shape and at equal intervals are provided on one side of the two sealing rings (402), and the plurality of guide rods (407) penetrate through the plurality of resistance springs (404) and are slidably connected inside the guide grooves (405).

5. A petroleum mechanical sealing device according to claim 1, characterized in that: The protection mechanism (5) comprises a sealing plate (501), and sealing plates (501) are respectively installed inside the two ends of the mounting seat (1), and the sealing plates (501) are slidably connected to the inner side of the mounting seat (1) through a movable groove (503), and the sealing plate (501) is slidably connected to the inside of the through groove (206). The sealing plate (501) is provided with a through hole (504), and the through hole (504) is connected to the through groove (206). The inner sides of the bottoms of the two ends of the mounting seat (1) are rotatably connected to threaded rods (502), and the bottoms of the two threaded rods (502) extend to the outside of the mounting seat (1), and the tops of the two threaded rods (502) are respectively threadedly connected to the inner center line of the sealing plate (501).

6. A petroleum mechanical sealing device according to claim 5, characterized in that: The locking mechanism (6) comprises a limiting groove (601), two limiting grooves (601) are respectively provided on the bottom sides of both ends of the connecting seat (203), two limiting rods (602) are respectively provided inside the two ends of the mounting seat (1), the limiting rods (602) are slidably connected to the inside of the mounting seat (1) via a return spring (603), one end of the limiting rod (602) extends into the limiting groove (601), and a push rod (604) is installed at the other end of the limiting rod (602), one end of the push rod (604) is a hemispherical structure, and one end of the push rod (604) is in contact with the side wall of the sealing plate (501).

7. A petroleum mechanical sealing device according to claim 1, characterized in that: The driving mechanism (7) comprises a driving rod (702), the driving rod (702) being mounted on the top of the valve core (204), the driving disk (701) being mounted on the top of the driving rod (702), a rotating groove (703) being provided on the top of the valve core (204), a fixed shaft (704) being fixedly connected at the center of the rotating groove (703), the bottom of the driving rod (702) being rotatably connected to the rotating groove (703) via the fixed shaft (704), and a torsion spring (705) being connected between the fixed shaft (704) and the inside of the driving rod (702).

8. A petroleum mechanical sealing device according to claim 3, characterized in that: The discharge mechanism (3) comprises a drainage groove (302), the drainage groove (302) being provided on the inner side of the bottom of the mounting seat (1), the bottom of the drainage groove (302) extending to the outside of the mounting seat (1), the top of the drainage groove (302) extending to the inside of the slot (205), and the drainage groove (302) being a cylindrical "T"-shaped structure.

9. A petroleum mechanical sealing device according to claim 8, characterized in that: A conical conduit (303) is installed at the bottom of the mounting seat (1), and the conical conduit (303) is located at the bottom of the drainage groove (302). A leather plug (301) is installed at the bottom of the rubber pad (209), and the leather plug (301) is a conical structure. The bottom of the leather plug (301) is engaged with the inner side of the top of the drainage groove (302).

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