CN110926711B

CN110926711B - Plugging device

Info

Publication number: CN110926711B
Application number: CN202010089114.3A
Authority: CN
Inventors: 张永峰; 蔡明元
Original assignee: Nanjing Tops Automation Equipment Co ltd
Current assignee: Nanjing Tops Automation Equipment Co ltd
Priority date: 2020-02-12
Filing date: 2020-02-12
Publication date: 2020-05-22
Anticipated expiration: 2040-02-12
Also published as: CN110926711A

Abstract

The application discloses plugging device includes: the supporting cylinder is cylindrical and is fixedly connected with the base, and the supporting cylinder is provided with an annular through groove; the plugging ring is made of elastic materials and is arranged in the annular through groove in a radially movable mode; and an actuating mechanism, at least a part of which is positioned in the support cylinder and is matched with the inner side of the plugging ring so as to enable the plugging ring to be switched between an expanded state and a retracted state, wherein the plugging ring protrudes out of the outer peripheral surface of the support cylinder in the expanded state, and the plugging ring does not protrude out of the outer peripheral surface of the support cylinder in the retracted state. According to the technical scheme of this application, the shutoff ring setting of making by elastic material has radial direction's dimensional change in a supporting cylinder and under actuating mechanism's effect, consequently when plugging device entering the shutoff position and leave the in-process in this shutoff position, can be comparatively convenient and can not cause the damage to the pore structure of treating the shutoff.

Description

Plugging device

Technical Field

The application relates to the field of machinery, in particular to a plugging device for plugging a pore passage.

Background

The sealing performance is an important factor for measuring the quality of a plurality of mechanical devices, and the service life, the working efficiency and the like of the whole mechanical device are directly influenced by the quality of the sealing performance. Therefore, for a mechanical device requiring sealing performance, it is essential to detect the structural sealing performance. In the process of detecting the sealing performance of the mechanical device, part of the pore structure of the mechanical device is often required to be plugged, so that the influence of pore leakage on the detection process is avoided. For example, when testing the sealing performance of the oil passage of the engine, the oil passage opening needs to be blocked.

Conventionally, the plugging of the pore canal is usually performed by using a plugging head made of an elastic material. However, in the using process, the plugging and pulling actions of the traditional plugging head all need a large acting force, so that the plugging purpose is achieved through the interference fit of the self shape of the plugging head and the pore channel, the whole plugging head can deform when used every time, certain damage is inevitably caused, the plugging head needs to be replaced frequently, and the production cost is increased. Thus, conventional occlusion schemes are complicated to operate, difficult, and prone to additional trauma.

Therefore, how to overcome the above-mentioned drawbacks of the conventional solutions at least to some extent is a technical problem to be solved in the art.

Disclosure of Invention

In view of this, the present application proposes a plugging device to enable a simple and safe plugging manner.

According to the present application, there is provided an occlusion device comprising: the supporting cylinder is cylindrical and is fixedly connected with the base, and the supporting cylinder is provided with an annular through groove; the plugging ring is made of an elastic material and is arranged in the annular through groove in a radially movable mode; an actuating mechanism, at least a part of which is positioned in the support cylinder and cooperates with the inner side of the plugging ring to switch the plugging ring between an expanded state and a retracted state, wherein in the expanded state, the plugging ring protrudes out of the outer peripheral surface of the support cylinder, and in the retracted state, the plugging ring does not protrude out of the outer peripheral surface of the support cylinder.

Preferably, the number of the plugging rings is multiple, the annular through grooves are multiple and are arranged at intervals in the axial direction, the plugging rings are respectively arranged in the corresponding annular through grooves, and the actuating mechanism is matched with each plugging ring at the same time.

Preferably, the support cylinder is formed with a groove on an outer peripheral surface of a portion thereof between the annular through grooves.

Preferably, the actuating mechanism comprises a hydraulic or pneumatic or mechanical actuating mechanism, which is capable of converting a linear movement in an axial direction into a movement of the occlusion ring in a radial direction.

Preferably, the mechanical actuation mechanism comprises: an actuating rod extending into the support cylinder from a first end of the support cylinder and being reciprocally movable in an axial direction, preferably the actuating rod comprises a plurality arranged in parallel; a force translation structure disposed on the actuation rod and cooperating with an inner side of the sealing ring to translate an axial force of the actuation rod into a radial force acting on the sealing ring.

Preferably, the force conversion structure is a cam structure or a ramp structure.

Preferably, the ramp structure comprises: the first inclined conical surface is formed between the inner peripheral surface and the first end surface of the plugging ring; and the actuating disc is fixedly arranged on the actuating rod in the supporting cylinder and is coaxially arranged with the supporting cylinder, and the actuating disc is provided with an actuating outer conical surface which is matched with the first inclined conical surface.

Preferably, the plugging device comprises a fixed disk fixedly connected to the base, the fixed disk is located in the support cylinder and is coaxially arranged with the support cylinder, the fixed disk and the actuating disk are adjacent and arranged at intervals, the plugging ring is located between the fixed disk and the actuating disk in the axial direction, and the actuating rod penetrates through the fixed disk to extend in a clearance manner.

Preferably, the blocking device comprises a fixing rod fixedly connected with the base, the fixing rod extends into the supporting cylinder from the first end of the supporting cylinder along the axial direction and is provided with the fixing disc, and the fixing rod and the actuating rod are arranged in parallel at intervals. Preferably, the fixing bar includes a plurality of bars arranged in parallel.

Preferably, a second oblique conical surface is arranged between the inner peripheral surface of the plugging ring and the second end surface; the fixed disc is provided with a fixed outer conical surface which is matched with the second inclined conical surface.

Preferably, the base is provided with a linear drive in powered connection with the actuating mechanism; the base is movably arranged on the frame; a second end of the support cylinder opposite the first end is closed.

According to the technical scheme of this application, what make by elastic material seals the ring setting and has radial direction's dimensional change in supporting a section of thick bamboo and under actuating mechanism's effect, consequently when the plugging device that this application provided is entering into the shutoff position and leave this shutoff position's in-process, can be comparatively convenient and can not cause the damage to the inside of treating the pore structure of shutoff.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention. In the drawings:

figures 1 and 2 are schematic views of an occlusion device according to a preferred embodiment of the present application;

figures 3 and 4 are cross-sectional and partial cross-sectional views of an occlusion device according to a preferred embodiment of the present application;

figure 5 is a schematic view of an exploded structure of an occlusion device according to a preferred embodiment of the present application.

Detailed Description

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, the present application provides an occlusion device comprising: the supporting cylinder 10 is cylindrical and is fixedly connected with the base S, and the supporting cylinder 10 is provided with an annular through groove 101; an occlusion ring 20, the occlusion ring 20 being made of an elastic material and being radially movably disposed in the annular through groove 101; an actuating mechanism, at least a portion of which is located within the support cylinder 10 and cooperates with the inside of the occluding ring 20 to transition the occluding ring 20 between an expanded state in which the occluding ring 20 protrudes from the outer circumferential surface of the support cylinder 10 and a retracted state in which the occluding ring 20 does not protrude from the outer circumferential surface of the support cylinder 10.

In the traditional plugging scheme, the plugging piece mainly playing a plugging role is basically operated manually. Or even if there is an automatic operation mode, the plugging piece itself does not have the variation of the radial dimension, so when entering the plugging position, the operation difficulty is relatively large and complex, and meanwhile, the damage such as scratch and the like is easily caused to the hole wall of the plugging position.

In the solution of the present application, instead, a blocking ring made of elastic material is arranged in the annular through slot 101 of the supporting cylinder 10 and has a dimensional variation in the radial direction under the action of the actuating mechanism, so as to be able to have a retracted condition and an expanded condition. Therefore, when the plugging device provided by the application enters the plugging position and leaves the plugging position, the plugging ring can be in a retraction state, so that the radial size of the plugging ring is smaller than that of the hole structure to be plugged, and the process is convenient and fast and does not damage the inside of the hole structure to be plugged; meanwhile, after the plugging ring reaches the plugging position, the plugging ring can be converted from a retraction state to a bulging state, so that a good plugging effect is realized.

The base S is used as an installation base of the plugging device and is fixedly connected with a supporting cylinder 10. As shown in fig. 1, although only a part of the structure is indicated as the base S in fig. 1, it is understood that the base S is also formed in the left side portion of fig. 1. The base S may be the frame itself or may be movably arranged to the frame. Through removing base S or removing the frame that supports base S, can arrange the plugging device of this application in suitable position, for example arrange in the position of supporting a section of thick bamboo 10 towards the pore structure of treating the shutoff, stretch into a section of thick bamboo 10 again and carry out the shutoff operation in the pore structure, accomplish the shutoff operation back, make a section of thick bamboo 10 leave the pore structure again.

As shown in fig. 1 to 3, the supporting cylinder 10 is cylindrical and is fixedly connected to the base S, and the supporting cylinder 10 has an annular through groove 101. The number of the plugging rings 20 may be one or more, as shown in the figure. Correspondingly, the annular through grooves 101 on the support cylinder 10 are plural and are arranged at intervals in the axial direction, and the plurality of plugging rings 20 are respectively arranged on the corresponding annular through grooves 101.

In order to maintain the structural integrity of the support cylinder 10 by virtue of the presence of the annular through slots 101, which sectionally provide the support cylinder 10 in the axial direction, as shown in fig. 1, 3 and 5, the blocking device comprises at least one fixing rod 33 (preferably a plurality of rods arranged in parallel) fixedly connected to the base S, the fixing rod 33 extending in the axial direction from the first end (i.e., the left end in fig. 2) of the support cylinder 10 into the support cylinder 10. Therefore, through the design of the fixing rod 33, each segment of the support cylinder 10 can be fixedly connected to the base S. As shown in fig. 5, the fixing rod 33 is designed with three evenly distributed circumferentially, but the present application is not limited thereto, and may also be designed with one or even not be a rod-shaped component, but with other suitable shapes capable of fixedly connecting each segment of the support cylinder 10 to the base S. A second end of the support cylinder 10 opposite to the first end may be closed to prevent foreign substances and the like from entering the inside of the support cylinder 10.

Preferably, as shown in fig. 4 and 5, the blocking device comprises a fixing disc 32, and the fixing disc 32 is positioned in the support cylinder 10 and is coaxially arranged with the support cylinder 10. The fixing plate 32 is fixedly connected to the base S by being fixedly connected to the fixing rod 33, so that the fixing plate 32 can be fixedly supported in the inner through hole of each section of the support cylinder 10 by the fixing plate 32, and each section of the support cylinder 10 is well and reliably stabilized. The mounting plate 32 may be disk-shaped, as shown in FIG. 5, or may be designed with radial slots to reduce weight. These variants are all within the scope of protection of the present application. Similarly, it is also applicable to the actuator disc, as will be described in detail below.

The plugging ring 20 is made of an elastic material, such as various suitable rubbers or plastics, so as to be able to expand by its own elastic deformation, and its outer circumferential surface is closely attached to the wall of the hole with the plugged hole structure, thereby achieving a good sealing effect. The space between adjacent plugging rings 20 may form a sealed space to be plugged. Further, preferably, the outer circumferential surface of the portion of the support cylinder 10 between the annular through grooves 101 may be formed with grooves 102, as shown in fig. 1. By the arrangement of the circumferential groove 102, it is more convenient for the plugging device to enter or leave the plugging position of the pore structure to be plugged.

As described above, at least a portion of the actuating mechanism is located within the support cylinder 10 and cooperates with the inside of the occluding ring 20 to transition the occluding ring 20 between the expanded state and the retracted state. The actuation mechanism is mounted on the base S, but a part of the actuation mechanism needs to be arranged in the support cylinder 10 and cooperate with the inner side of the plugging ring 20, and in case of a plurality of plugging rings 20, the actuation mechanism can cooperate with each plugging ring at the same time, so that the contraction and expansion of each plugging ring 20 in the radial direction can be simultaneously manipulated.

To effect actuation of the occluding ring 20 by the actuating mechanism, the actuating mechanism can have a variety of implementations, and can include, for example, a hydraulic actuating mechanism, or a pneumatic actuating mechanism, or a mechanical actuating mechanism.

The hydraulic or pneumatic actuating mechanism may comprise a pressure source (liquid or gas source) which provides high-pressure liquid or gas through a delivery line in the support cartridge 10 to the radially arranged pusher, so that the pusher pushes the sealing ring 20 to expand in the radial direction and thus to the expanded state; when the pressure source no longer delivers high pressure liquid or gas, the plugging ring 20 can be restored to the original shape under the action of the elastic force thereof, thereby entering the retraction state.

For a mechanical actuation mechanism, the plugging ring 20 is expanded in the radial direction by converting a linear movement in the axial direction into a movement of the plugging ring 20 in the radial direction. To achieve this actuation, the base S is preferably provided with a linear drive (not numbered) in powered communication with the actuation mechanism, which may be an air cylinder, a hydraulic cylinder or a rack and pinion mechanism or a linear motor, etc., as shown in fig. 1.

As shown in fig. 1, 3 to 5, according to a preferred embodiment, the mechanical actuation mechanism comprises: an actuating rod 30, the actuating rod 30 extending into the support cylinder 10 from a first end of the support cylinder 10 and being capable of reciprocating in an axial direction, preferably, the actuating rod 30 includes a plurality of rods arranged in parallel; a force conversion structure is provided on the actuator rod 30 and cooperates with the inside of the sealing ring 20 to convert the axial force of the actuator rod 30 into a radial force acting on the sealing ring 20.

Specifically, the actuating rod 30, which may be power-connected to the driver, enters the support cylinder 10 from a first end (left end shown in fig. 3) of the support cylinder 10 and is capable of reciprocating in the axial direction. To avoid interference between the actuation rod 30 and the fixed disk 32, the actuation rod 30 extends through the fixed disk 32 with clearance so that the presence of the fixed disk 32 does not affect the axial movement of the actuation rod 30.

The force transfer structure may have various forms, and may be, for example, a cam structure or a ramp structure. In the cam configuration, a corresponding cam contour can be provided on the outer circumferential surface of the actuating rod 30, which cam contour cooperates with the inside of the sealing ring 20, so that the sealing ring 20 is expanded radially outward by a change in the cam contour when the actuating rod 30 is moved axially.

It may also be a ramp structure as shown in fig. 4 and 5. This inclined plane structure includes: a first tapered surface 301, the first tapered surface 301 being formed between the inner peripheral surface 201 and the first end surface 202 of the plugging ring 20; and an actuating disc 31, the actuating disc 31 being fixedly disposed on the actuating rod 30 within the support cylinder 10 and being coaxially arranged with the support cylinder 10, the actuating disc 31 being provided with an actuating external tapered surface 311, the actuating external tapered surface 311 being engaged with the first tapered surface 301.

A first oblique cone 301 is provided on the inner side of the blocking ring 20, and an actuating disc 31 located in the support cylinder 10 is fixedly provided on the actuating rod 30. Thus, when the actuator rod 30 is moved in the axial direction, the actuator disc 31 will also move with the movement of the actuator rod 30. Specifically, as shown in fig. 4, when the actuating rod 30 moves to the right, the actuating outer tapered surface 311 of the actuating disc 31 pushes the first tapered surface 301 of the plugging ring 20, so that the plugging ring 20 expands radially outward; when the actuating rod 30 moves to the left, the pushing force on the first tapered surface 301 of the plugging ring 20 can be reduced, and even the actuating outer tapered surface 311 is out of contact with the first tapered surface 301, so as to allow the plugging ring 20 to radially contract to the retracted position under the action of the elasticity of the actuating rod. Meanwhile, in the manner in which the actuating disc 31 is provided, the fixing rod 33 passes through the actuating disc 31 with a gap therebetween to prevent interference when the two are relatively moved, as shown in fig. 5.

As described above, in the preferred embodiment of the present application, the fixed lever is provided with the fixed disk 32, and the actuating lever is provided with the actuating disk 31, which are arranged at intervals in the axial direction. Preferably, the fixed disk 32 is arranged adjacent to the actuating disk 31, and the sealing ring 20 is located between the fixed disk 32 and the actuating disk 31 in the axial direction. Thus, in this arrangement, it is also possible to provide a supporting effect for the plugging ring 20 by means of the retaining disk 32, as shown in fig. 4. As described above, both the fixing lever and the actuating lever may be designed as a plurality arranged in parallel with each other, and therefore, it is preferable that the fixing lever 33 and the actuating lever 30 are arranged in parallel with a space therebetween. In this structural form, the fixed lever and the fixed tray and the actuating lever and the actuating tray function independently of each other without interfering with each other, as shown in fig. 5.

Specifically, when the stopper ring 20 is in the retracted state, the fixed disk 32 abuts against the stopper ring 20, and the actuator disk 31 does not contact the stopper ring 20, or the actuator disk 31 also contacts the stopper ring 20 at the same time, but the stopper ring 20 does not protrude from the outer peripheral surface of the support cylinder. In this state, when the actuator rod 30 is moved axially to move the actuator disk 31 closer to the fixed disk 32, the stopper ring 20 is converted into the expanded state so that the fixed disk 32 is separated from the stopper ring 20, and the actuator disk 31 contacts the stopper ring 20 and plays a further role of supporting the stopper ring 20. That is, when the actuation disc 31 and the fixed disc 32 approach each other, the plugging ring 20 is expanded radially outward, and when the actuation disc 31 and the fixed disc 32 move away from each other, the actuation disc 31 reduces or cancels the radially outward supporting force on the plugging ring 20, thereby allowing the plugging ring 20 to be retracted by its own elastic force.

Preferably, as shown in fig. 4 and 5, a second oblique tapered surface 302 is provided between the inner circumferential surface 201 and the second end surface 203 of the plugging ring 20; the stationary plate 32 is provided with a stationary outer tapered surface 321, and the stationary outer tapered surface 321 is engaged with the second tapered surface 302. By means of the fit between the second oblique conical surface 302 and the fixed external conical surface 321, the plugging ring 20 can be supported more reliably, so that it can be operated more reliably by the actuation disc 31.

In addition, it is to be understood that, although the description has been made above taking as an example the case where the actuation disc is oriented in the right direction to thereby drive the block piece to bulge outward, the present application is not limited thereto. Depending on the arrangement, it is also possible to design the actuating disk such that it drives the blocking element outward in the left direction. This is because the blocking element can be expanded outwards by reducing the relative distance between the actuating disk and the fixed disk inside the blocking ring, while the blocking element is allowed to retract when the relative distance is increased. Furthermore, two sets of actuating disks can be designed and distributed on both sides of the axial direction of the plugging piece. These variants are all within the scope of protection of the present application.

In this application, the terms "axial" and "radial" are used with reference to the orientation of the support cylinder. The directional terms "left", "right", "inner", "outer", and the like are relative terms, and are used in a descriptive sense only and not for purposes of limitation. These are exemplary representations of the technical solutions of the present application and are not intended to limit the scope of the present application. In other arrangements, the above directional terms may vary.

As can be seen from the above detailed description, in the solution of the present application, the blocking ring made of elastic material is arranged in the annular through slot 101 of the support cylinder 10 and has a dimensional variation in the radial direction under the action of the actuating mechanism, so as to be able to have a retracted state and a deployed state. Therefore, when plugging is needed, the support cylinder can be extended into the hole structure to be plugged when the plugging ring is in a retracted state. After reaching the preset position, the actuating piece is actuated to enable the plugging ring to enter the expansion state from the retraction state, so that the peripheral surface of the plugging ring tightly abuts against the inner wall of the hole structure to be plugged, and the plugging effect is realized. After the relevant operation is finished, the actuating element is actuated to restore the plugging ring from the expanded state to the retracted state, and the supporting cylinder is withdrawn from the hole structure. Therefore, the whole operation process is simple and convenient, and the inner wall of the pore structure is not damaged.

The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications all belong to the protection scope of the present application.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in the present application.

In addition, any combination of the various embodiments of the present application is also possible, and the same should be considered as disclosed in the present application as long as it does not depart from the idea of the present application.

Claims

1. An occlusion device, characterized in that the occlusion device comprises:

the supporting cylinder (10), the supporting cylinder (10) is cylindrical and is fixedly connected with the base (S), and the supporting cylinder (10) is provided with an annular through groove (101);

an occlusion ring (20), the occlusion ring (20) being made of an elastic material and being radially movably arranged in the annular through slot (101);

an actuating mechanism, at least a portion of which is located within the support cylinder (10) and cooperates with the inside of the occluding ring (20) to transition the occluding ring (20) between an expanded state and a retracted state,

wherein, in the expanded state, the plugging ring (20) protrudes out of the outer peripheral surface of the support cylinder (10), and in the retracted state, the plugging ring (20) does not protrude out of the outer peripheral surface of the support cylinder (10),

wherein the actuation mechanism comprises a mechanical actuation mechanism capable of converting a linear movement in an axial direction into a movement of the occlusion ring (20) in a radial direction, the mechanical actuation mechanism comprising: an actuating rod (30), the actuating rod (30) extending into the support cylinder (10) from a first end of the support cylinder (10) and being capable of reciprocating in an axial direction; a force conversion structure provided on the actuating rod (30) and cooperating with the inner side of the occlusion ring (20) so as to convert an axial force of the actuating rod (30) into a radial force acting on the occlusion ring (20),

wherein, force conversion structure is the inclined plane structure, the inclined plane structure includes: a first tapered surface (301), wherein the first tapered surface (301) is formed between the inner peripheral surface (201) and the first end surface (202) of the plugging ring (20); and an actuating disc (31), the actuating disc (31) being fixedly arranged on the actuating rod (30) in the support cylinder (10) and being arranged coaxially with the support cylinder (10), the actuating disc (31) being provided with an actuating external conical surface (311), the actuating external conical surface (311) cooperating with the first oblique conical surface (301),

the plugging device comprises a fixed disc (32) fixedly connected to the base, the fixed disc (32) is positioned in the support cylinder (10) and is coaxially arranged with the support cylinder (10), the fixed disc (32) is adjacent to the actuating disc (31) and is arranged at intervals, the plugging ring (20) is positioned between the fixed disc (32) and the actuating disc (31) in the axial direction, the actuating lever (30) penetrates through the fixed disc (32) at intervals and extends,

the plugging device comprises a fixing rod (33) fixedly connected with a base, the fixing rod (33) extends into the supporting cylinder (10) from the first end of the supporting cylinder (10) along the axial direction and is provided with a fixing disc (32), and the fixing rod (33) and the actuating bar (30) are arranged in parallel at intervals.

2. The occlusion device, according to claim 1, characterized in that said occlusion ring (20) is in plurality, said annular through slots (101) are in plurality and are arranged at a distance from each other in the axial direction, said plurality of occlusion rings (20) being provided respectively in the corresponding annular through slots (101), said actuation means cooperating simultaneously with each occlusion ring (20).

3. The occlusion device of claim 1,

a second oblique conical surface (302) is arranged between the inner peripheral surface (201) of the plugging ring (20) and the second end surface (203);

the fixed disc (32) is provided with a fixed outer conical surface (321), and the fixed outer conical surface (321) is matched with the second oblique conical surface (302).

4. The occlusion device of claim 1,

the base (S) is provided with a linear drive which is in power connection with the actuating mechanism; or

The base (S) is movably arranged on the frame; or

A second end of the support cylinder (10) opposite to the first end is closed.