CN114776899A

CN114776899A - Mechanical sealing device

Info

Publication number: CN114776899A
Application number: CN202210479016.XA
Authority: CN
Inventors: 康文钡; 李代绪; 苏青
Original assignee: Individual
Current assignee: Zhejiang Luxi Seal Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-22
Anticipated expiration: 2042-05-05

Abstract

The invention provides a mechanical sealing device, relates to the technical field of sealing elements and solves the problem that the production is affected because the oil dirt in the connecting sealing element needs to be completely disassembled when being cleaned, comprising a first connecting piece of a pipe cavity structure, wherein one end of the first connecting piece is provided with an extended threaded pipe, the threaded pipe is matched in a threaded hole, so that the first connecting piece and a second connecting piece are connected with each other, an oil pipe penetrates through the threaded pipe, the outer end of the threaded pipe is provided with a sinking cavity communicated with the pipe cavity of the threaded pipe, the oil dirt which possibly sinks deeply in the pipe cavity can be crushed when a cleaning rod swings back and forth along the radial direction of the pipe cavity along with the ceaseless rotation of the oil pipe in the pipe cavity, the whole cleaning process does not need to completely disassemble the whole sealing connecting piece along with the outward discharge of the oil, only needs to loosen the first connecting piece and the second connecting piece which form the connecting piece, and then quickly rotate the oil pipe, the time is saved, the oil way is normally supplied in the cleaning process, and the production cannot be influenced.

Description

Mechanical sealing device

Technical Field

The invention relates to the technical field of sealing elements, in particular to a mechanical sealing device.

Background

The mechanical sealing element is a commonly-known component in the mechanical industry, for example, some mechanical industrial equipment can be provided with an oil tank, such as a punching machine and oil cylinder starting equipment, an oil pipe can be arranged on the oil tank, the oil pipe and the oil tank are fixed through a connecting piece, one end of the connecting piece is provided with a sealing gasket which can prevent oil leakage when connected with the oil tank, the other end of the connecting piece is provided with an O-shaped ring which can prevent the oil pipe from leaking oil when connected with the oil pipe, and some connecting pieces can also have a switching function, so that the connected oil pipe can flexibly rotate according to the working requirement.

When the oil pipe connecting piece is in actual use, because of fluid circulates between pipeline and equipment, along with reasons such as equipment ageing, just make the impurity in the equipment drop downwards to along with fluid circulates to the connecting piece in, cause the oil pipe inner wall to adhere to and have a large amount of grease, current clearance mode is to disassemble the connecting piece, then demolish oil pipe, wash the grease again, so, not only troublesome poeration, but also can influence the oil circuit normal cycle, delay production.

Disclosure of Invention

The invention aims to solve the problem that oil dirt in a sealed oil pipe can be cleaned on the premise of not needing to be disassembled.

The invention has the technical scheme that the mechanical sealing device comprises a first connecting piece of a pipe cavity structure and a second connecting piece of the pipe cavity structure, wherein a threaded hole positioned in a pipe cavity of the second connecting piece is formed in the second connecting piece, an extended threaded pipe is arranged at one end of the first connecting piece, the threaded pipe is matched in the threaded hole, so that the first connecting piece and the second connecting piece are connected with each other, an oil pipe penetrates through the threaded pipe, a sinking cavity communicated with the pipe cavity of the threaded pipe is formed in the outer end of the threaded pipe, a flange plate with the middle part communicated with the pipe cavity of the oil pipe is formed at one end of the oil pipe in one step and is rotatably placed in the sinking cavity, the other end of the oil pipe extends outwards in a direction deviating from the flange plate, a connecting seat with the threaded hole is arranged at one end of the second connecting piece, a plurality of hinge holes are formed in the connecting seat, and a rotating shaft is arranged in each hinge hole, all there is a clearance pole through pivot in each hinge hole swing joint still, the clearance pole is in the lumen of first connecting piece and second connecting piece, and the clearance pole extends to the other end along oil pipe's lumen by the one end that articulates at the hinge hole, the hinge end of clearance pole is equipped with outstanding perk portion in the hinge hole, it is protruding to be equipped with the annular on the outer terminal surface of flange board for it is in to connect the contact to force the clearance pole rotatory when the protruding extrusion perk portion of annular on the inner chamber wall of oil pipe.

Preferably, the other end of the first connecting piece, which is away from the threaded pipe, is provided with a bearing, and the extending end of the oil pipe penetrates through the bearing and is fixed on an inner ring of the bearing.

Preferably, the connecting seat is provided with a plurality of rolling pins along the annular direction in the sinking cavity, an O-ring is arranged on the outer circumferential surface of the connecting seat, an annular channel is arranged on the end surface of the connecting seat facing the sinking cavity, the connecting seat is positioned in the sinking cavity, and the annular channel is in rolling contact with the rolling pins.

As further preferred, be equipped with on the first connecting piece and be close to the extrusion end in the screwed pipe, the extrusion end be equipped with screwed pipe lapped extrusion face, be equipped with on the second connecting piece with the bearing surface that the extrusion face corresponds, the cover is equipped with sealing washer and lock washer on the screwed pipe, first connecting piece and second connecting piece are connected back sealing washer and lock washer and are extruded between extrusion face and the bearing surface, make simultaneously the annular is protruding to be extruded in the perk portion to force the clearance pole rotatory to connect the contact on oil pipe's inner chamber wall.

Preferably, the connecting seat is provided with a plurality of fixing holes in an annular array, and the outer end face of the connecting seat is provided with a sealing gasket.

Preferably, the hinge hole is provided with an inclined plane inclined towards the direction of the cleaning rod, the inclined plane is fixedly provided with a spring, and the other end of the spring is exposed out of the hinge hole and connected to the tilting part.

Preferably, the cleaning rod is provided with an inclined plate on an inner wall surface thereof along a length direction thereof, and the inclined plate is an inclined rod gradually widened from one end of the tilting portion to the other end thereof.

As a further preferred option, a plurality of gaps are formed in the annular protrusion, the gaps are uniformly distributed on the annular protrusion, two sides of each gap are inclined planes, and the gaps are sequentially extruded on each tilting portion when the annular protrusion rotates synchronously with the flange plate.

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

the first connecting piece and the second connecting piece are connected together in a threaded butt joint mode, the oil pipe is sealed in the pipe cavities of the first connecting piece and the second connecting piece through the flange plate after the butt joint, the oil leakage phenomenon can not occur when the oil pipe forms an oil supply loop, the two connecting pieces can be conveniently disassembled besides the realization of sealing connection, the disassembly principle is utilized to facilitate the regular cleaning of the oil pipe, a tilting cleaning rod is arranged between the pipe cavity of the oil pipe and the pipe cavity of the second connecting piece, the cleaning rod is attached to the inner wall of the pipe cavity when the two connecting pieces are in sealing connection with the oil pipe through the butt joint, the normal circulation of the oil liquid can not be influenced, when the connecting pieces and impurities in the oil pipe need to be cleaned, the first connecting piece is rotated to be loosened, meanwhile, the tilting end of the cleaning rod is inclined in the pipe cavity when the extrusion of the oil pipe is lost, the cleaning rod swings back and forth along the radial direction of the pipe cavity along with the continuous rotation of the oil pipe in the pipe cavity, thereby can make the greasy dirt of deposiing on the pipe wall clearance downwards, still can crush the greasy dirt that probably sinks deeply in the lumen when these clearance poles along the radial direction round trip movement of lumen, along with fluid outwards discharges, whole clearance process need not to disassemble whole sealing connecting piece completely, and only need make the first connecting piece and the second connecting piece that constitute the connecting piece become flexible, then quick rotation oil pipe can, the time has been saved, and normally supply of oil circuit in clearance process, can not influence production.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the present invention when assembled and cut open;

fig. 2 is a schematic structural diagram of the sealing connector extracted from fig. 1 when the first connector is separated from the second connector:

FIG. 3 is a schematic view of the sealing joint of FIG. 2 in another rotational view

FIG. 4 is a schematic view of a plurality of cleaning rods with cut-away interior according to the present invention;

fig. 5 is a specific structural schematic diagram of only an oil pipe in the present invention.

Detailed Description

The technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. 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.

One embodiment is shown in fig. 1-5.

The mechanical sealing device provided by the embodiment comprises a first connecting piece 1 of a pipe cavity structure and a second connecting piece 2 of the pipe cavity structure, wherein a threaded hole 3 positioned in a pipe cavity of the second connecting piece 2 is formed in the second connecting piece 2, an extended threaded pipe 4 is arranged at one end of the first connecting piece 1, the threaded pipe 4 is matched in the threaded hole 3, so that the first connecting piece 1 and the second connecting piece 2 are connected with each other, an oil pipe 5 penetrates through the threaded pipe 4, a sinking cavity 6 communicated with the pipe cavity of the threaded pipe 4 is formed at the outer end of the threaded pipe 4, a flange plate 7 with the middle part communicated with the pipe cavity of the oil pipe 5 is formed at one end of the oil pipe 5, the flange plate 7 is rotatably arranged in the sinking cavity 6, the other end of the oil pipe 5 deviates from the direction of the flange plate 7 and extends outwards, therefore, after the first connecting piece 1 is rotated to be completely connected with the second connecting piece 2, and when the threads between the first connecting piece and the second connecting piece are completely matched, the threaded pipe 4 will press the flange plate 7 at the end of the oil pipe 5 towards the second connection member 2, eventually forcing the oil pipe 5 to seal between the second connection member 2 and the first connection member 1. Because still be equipped with the communicating connecting seat 8 of middle part and screw hole 3 in the one end of second connecting piece 2 again, be connected to the oil tank through fixed orifices 19 on the connecting seat 8 with the sealing member of this connecting piece formula, sealed pad 26 is located between oil tank and the connecting piece after the fixing, the effect of preventing the oil leak has been played, fluid in the oil tank finally outwards discharges through oil pipe 5, perhaps fluid on the equipment flows back to in the oil tank through oil pipe 5, in a word, when in-service use, realize synchronous fixation when oil pipe 5 docks in to second connecting piece 2 through first connecting piece 1, still have the leakproofness during the butt joint of two parts connecting piece, concrete seal structure does: an extrusion end 14 close to the threaded pipe 4 is arranged on the first connecting piece 1, the extrusion end 14 is provided with an extrusion surface 15 lapped with the threaded pipe 4, a pressure bearing surface 16 corresponding to the extrusion surface 15 is arranged on the second connecting piece 2, a sealing ring 17 and a check washer 18 are sleeved on the threaded pipe 4, the sealing ring 17 and the check washer 18 are extruded between the extrusion surface 15 and the pressure bearing surface 16 after the first connecting piece 1 and the second connecting piece 2 are connected, sealing is achieved, meanwhile, the annular bulge 13 is extruded on the tilting portion 12, and the cleaning rod 11 is forced to rotate to contact with the inner cavity wall of the oil pipe 5.

As shown in fig. 1 and 4, a connecting seat 8 is provided with a plurality of hinge holes 9, each hinge hole 9 is provided with a rotating shaft 10, each hinge hole 9 is movably connected with a cleaning rod 11 through the rotating shaft 10, the cleaning rod 11 is arranged in the pipe cavity of the first connecting piece 1 and the second connecting piece 2, the cleaning rod 11 extends from one end hinged with the hinge hole 9 along the pipe cavity of the oil pipe 5 to the other end, the hinge end of the cleaning rod 11 is provided with a tilting part 12 protruding out of the hinge hole 9, the outer end surface of the flange plate 7 is provided with an annular bulge 13, when the annular bulge 13 extrudes the tilting part 12, the cleaning rod 11 is forced to rotate to contact the inner cavity wall of the oil pipe 5, namely, when the first connecting piece 1 is connected into the second connecting piece 2, the inner end of the threaded pipe 4 is utilized to apply pressure to the flange plate 7, the flange plate 7 is forced to be extruded to the connecting seat 8, and when the two are extruded and butted, the tilting part 12 is also spun, forcing the tilting part 12 to completely enter the hinge hole 9 around the rotating shaft 10, so that the other end extension rod connected with the tilting part 12 swings to be attached to the inner wall of the tube cavity of the oil pipe 5 in the radial direction, that is, when the oil pipe 5 is butted on an oil tank through the connecting piece and used as an oil supply pipeline, a plurality of cleaning rods 11 are formed on the inner wall of the tube cavity of the oil pipe 5, because a large amount of oil dirt is formed on the tube wall after the oil pipe 5 is used for a period of time, in the invention, by utilizing the fastening principle, the cleaning rods 11 can be moved towards the axial direction of the oil pipe 5 in the radial direction in a mode of loosening the first connecting piece 1, and the specific operation process is as follows: the first connecting piece 1 is rotated to generate a loosening effect with the second connecting piece 2, at the moment, the threaded pipe 4 on the first connecting piece 1 is far away from the flange plate 7, so that the flange plate 7 can be loosened axially in the sinking chamber 6, because the flange plate 7 is a component on the oil pipe 5, the oil pipe 5 can be displaced axially in the pipe cavity of the first connecting piece 1, at the moment, the oil pipe 5 is pulled by the outer end, the flange plate 7 at the inner end is far away from the tilting part 12, the tilting part 12 can drive the cleaning rod 11 to swing towards the axial direction of the oil pipe 5 while losing the extrusion effect of the flange plate 7, namely, the cleaning rod 11 can be separated from the inner wall of the pipe cavity of the oil pipe 5, the oil scale attached to the inner wall of the pipe cavity can fall off downwards in the separation process of the cleaning rod 11, the whole sealing connecting piece does not need to be completely disassembled in the whole cleaning process, but only needs to loosen the first connecting piece and the second connecting piece which form the connecting piece, then the quick rotatory oil pipe can, saved the time, and normally supply with at the clearance in-process oil circuit, can not influence production. In order to improve rational in infrastructure clearance, still be equipped with on hinge hole 9 towards the inclined plane 20 that inclines in clearance pole 11 direction, be fixed with spring 21 on the inclined plane 20, the other end of spring 21 spills hinge hole 9 and is connected in perk portion 12, when flange 7 and perk portion 12 separate, compel to make perk portion 12 take clearance pole 11 and lumen inner wall to separate under the effect of spring 21 power, also under the effect of spring 21 simultaneously, make clearance pole 11 keep away from lumen inner wall swing back position auto-lock.

As shown in fig. 4, in order to separate the flange plate 7 from the tilted portion 12, the cleaning rod 11 can be smoothly separated from the inner wall of the lumen by the spring 21, and therefore, an inclined plate 24 for increasing the self-gravity of the extending end is further provided on the inner wall surface of the cleaning rod 11 along the longitudinal direction thereof, and the inclined plate 24 is an inclined rod gradually widened from one end of the tilted portion 12 to the other end thereof.

As shown in fig. 1 and 5, a plurality of gaps 27 are formed on the annular protrusion 13, the plurality of gaps 27 are uniformly distributed on the annular protrusion 13, two surfaces of the gaps 27 are inclined surfaces, and when the annular protrusion 13 synchronously rotates along with the flange plate 7, the plurality of gaps 27 are sequentially pressed on each of the tilted portions 12. The oil pipe 5 can be rotated after loosening, at the moment, the flange plate 7 at the inner end of the oil pipe can also be rotated, because the flange plate 7 is provided with the annular bulge 13, the annular bulge 13 is provided with a plurality of notches 27 which rotate along with the annular bulge 13, and the rotating track of the notches 27 is at the positions of the raised parts 12, the raised parts 12 can frequently go in and out of the notches 27 while the oil pipe 5 rotates, when the raised parts 12 enter the notches 27, the raised parts 12 form a moving space, and under the action of the spring 21, the raised parts 12 drive the cleaning rod 11 to radially swing towards the axial direction of the oil pipe 5, on the contrary, when the raised parts 12 are separated from the notches 27 and are extruded by the raised parts of the annular bulge 13, the raised parts 12 drive the cleaning rod 11 to stick to the pipe of the oil pipe 5 again in the axial direction far away from the cavity wall of the oil pipe, and the oil pipe 5 rotates frequently, will cause these cleaning rods 11 to frequently swing between the lumen inner wall and the lumen axis, so as to clean the oil dirt attached to the lumen inner wall completely, because the two connectors are locked and make the oil pipe 5 fastened inside for use, the cleaning rods 11 stick to the lumen inner wall of the oil pipe 5, so when the lumen inner wall forms oil dirt, in fact most of these oil dirt will adhere to the cleaning rods 11, and more specifically these oil dirt will adhere to the inner wall of the inclined plate 24, with the loose oil pipe 5 can rotate in the lumen, and in the course of rotating action, will make these cleaning rods 11 swing radially in the lumen, when the inclined plate 24 swings with the cleaning rods 11 to approach the lumen axis, will make the lumen diameter smaller, therefore the oil pressure will increase, because this cleaning method does not remove the whole sealed connector, also need not stop the oil supply, instead, only need not to become flexible first connecting piece 1 and rotate oil pipe 5 again can, therefore fluid will thoroughly wash the grease on the hang plate 24 to the fluid in, finally again by the filter core filtration processing in the equipment, to sum up can find out, this sealing connection spare is when handling the grease, equipment need not to shut down, and the connecting piece also need not safely to be disassembled, can not delay production.

In another embodiment: the other end of the first connecting piece 1, which is far away from the threaded pipe 4, is provided with a bearing 22, the extending end of the oil pipe 5 penetrates through the bearing 22 and is fixed on an inner ring of the bearing 22, so that the loosened oil pipe 5 can freely rotate in the pipe cavities of the first connecting piece 1 and the second connecting piece 2, and in order to improve the stability of the rotation of the oil pipe, as shown in fig. 1, a plurality of rolling pins 23 are arranged in the sinking cavity 6 along the annular direction of the sinking cavity 6, an annular groove 25 is formed in the end surface, facing the sinking cavity 6, of the connecting seat 8, the connecting seat 8 is positioned in the sinking cavity 6, the annular groove 25 is in rolling contact with the rolling pins 23, and meanwhile, an O-shaped ring 24 for preventing oil leakage during rotation of the connecting seat 8 from playing a relative sealing role is arranged on the outer circular surface of the connecting seat 8.

The above-described embodiments further explain the objects, technical solutions, and advantageous effects of the present invention in detail. It should be understood that the above description is only illustrative of specific embodiments of the present invention and is not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.

Claims

1. Mechanical seal device, including lumen structure's first connecting piece (1), lumen structure's second connecting piece (2), its characterized in that: the connecting structure is characterized in that a threaded hole (3) located in a pipe cavity of the second connecting piece (2) is formed in the second connecting piece, one end of the first connecting piece (1) is provided with an extended threaded pipe (4), the threaded pipe (4) is matched in the threaded hole (3), so that the first connecting piece (1) and the second connecting piece (2) are connected with each other, an oil pipe (5) penetrates through the threaded pipe (4), the outer end of the threaded pipe (4) is provided with a sinking cavity (6) communicated with the pipe cavity, one end of the oil pipe (5) is formed with a flange plate (7) with the middle part communicated with the pipe cavity in one step, the flange plate (7) is rotatably arranged in the sinking cavity (6), the other end of the oil pipe (5) deviates from the direction of the flange plate (7) and extends outwards, one end of the second connecting piece (2) is provided with a connecting seat (8) with the threaded hole (3), the connecting seat (8) is provided with a bitter hinge hole (9), all be equipped with pivot (10) in each hinge hole (9), all still swing joint have one through pivot (10) in each hinge hole (9) to clear up pole (11), clear up pole (11) in the lumen of first connecting piece (1) and second connecting piece (2), and clear up pole (11) extend to the other end along the lumen of oil pipe (5) by the one end that articulates at hinge hole (9), the hinged end of clearing up pole (11) is equipped with outstanding perk portion (12) in hinge hole (9), be equipped with annular bulge (13) on the outer terminal surface of flange board (7) for force when annular bulge (13) extrusion perk portion (12) that clear up pole (11) are rotatory to connecing the contact on the inner chamber wall of oil pipe (5).

2. The mechanical sealing device according to claim 1, wherein a plurality of fixing holes (19) are formed in the connecting seat (8) in an annular array, and a sealing gasket (26) is arranged on the outer end face of the connecting seat (8).

3. A mechanical sealing arrangement according to claim 1, characterized in that the other end of the first connecting piece (1) facing away from the threaded pipe (4) is provided with a bearing (22), and the extending end of the oil pipe (5) extends through the bearing (22) and is fixed to the inner ring of the bearing (22).

4. The mechanical sealing device according to claim 1, wherein a plurality of rolling balls (23) are arranged in the sinking chamber (6) along the circular direction, an O-ring (24) is arranged on the outer circular surface of the connecting seat (8), an annular channel (25) is arranged on the end surface of the connecting seat (8) facing the sinking chamber (6), the connecting seat (8) is positioned in the sinking chamber (6), and the annular channel (25) is in rolling contact with the rolling balls (23).

5. The mechanical sealing device of claim 1, wherein the first connecting piece (1) is provided with an extrusion end (14) close to the threaded pipe (4), the extrusion end (14) is provided with an extrusion surface (15) lapped with the threaded pipe (4), the second connecting piece (2) is provided with a pressure bearing surface (16) corresponding to the extrusion surface (15), the threaded pipe (4) is sleeved with a sealing ring (17) and a check washer (18), the first connecting piece (1) and the second connecting piece (2) are connected with a rear sealing ring (17) and a check washer (18) to be extruded between the extrusion surface (15) and the pressure bearing surface (16), and the annular protrusion (13) is extruded on the tilting part (12) and forces the cleaning rod (11) to rotate to contact with the inner cavity wall of the oil pipe (5).

6. The mechanical sealing device according to claim 5, characterized in that the hinge hole (9) is provided with an inclined surface (20) inclined towards the direction of the cleaning rod (11), a spring (21) is fixed on the inclined surface (20), and the other end of the spring (21) leaks out of the hinge hole (9) and is connected to the tilting part (12).

7. The mechanical sealing device according to claim 6, characterized in that the inner wall surface of the cleaning rod (11) is provided with an inclined plate (24) along the length direction thereof, and the inclined plate (24) is an inclined rod which gradually widens from one end of the tilting part (12) to the other end.

8. The mechanical sealing device according to claim 7, wherein a plurality of notches (27) are formed in the annular protrusion (13), the plurality of notches (27) are uniformly distributed on the annular protrusion (13), two sides of each notch (27) are inclined surfaces, and when the annular protrusion (13) rotates synchronously with the flange plate (7), the plurality of notches (27) are sequentially extruded on each raised portion (12).