Floating type sealing assembly
Technical Field
The utility model relates to the field of floating type sealing assembly industry, in particular to a floating type sealing assembly.
Background
Oilfield flooding is one of the main processes of oilfield secondary oil extraction, and is also an important measure for guaranteeing the stable and high yield of the oilfield. The plunger pump is a very important fluid pressurizing machine, has the advantages of high efficiency, energy conservation, simplicity and convenience in operation and the like, and is key equipment in the oil extraction operation process of an oil field.
The existing plunger pump adopts a complete sealing structure when being connected with working equipment generally, when the plunger pump is used, the instantaneous impact of lubricating oil in the working equipment is higher, and the equipment is easy to damage, so that a pump set cannot work normally, spare parts are frequently replaced to increase the running cost, and the plunger of the plunger pump easily breaks unstably in the working process, so that the sealing element is easy to damage, and the stability of the sealing performance is influenced.
Disclosure of utility model
The utility model provides a floating type sealing assembly, which solves the technical problems that in the prior art, the instantaneous impact of lubricating oil in working equipment is high, the equipment is easy to damage, the sealing element is easy to damage due to unstable jumping of a plunger pump in the working process, and the sealing performance is influenced.
In order to solve the problems, the floating type sealing assembly adopts the following technical scheme that the floating type sealing assembly comprises a sealing body, wherein the sealing body comprises a mounting cavity, a first opening and a second opening, the first opening and the second opening are respectively provided with a first sealing piece, the mounting cavity is internally provided with a second sealing piece, the outer wall of the second sealing piece is propped against the inner wall of the mounting cavity, the second sealing piece is in sliding fit with the inner wall of the mounting cavity, the second sealing piece is provided with a hollow cavity with an annular structure, the axes of the hollow cavity and the second sealing piece are mutually overlapped, the sealing body is provided with drainage grooves on two sides of the second sealing piece, and the drainage grooves are mutually communicated with the mounting cavity.
Further, a sliding-assisting layer is arranged on one side, which is attached to the second sealing piece, of the inner wall of the mounting cavity, and the second sealing piece is in sliding fit with the sliding-assisting layer.
Further, the first sealing piece and the second sealing piece are all arranged in an annular structure, and the axes of the first sealing piece, the second sealing piece and the sealing body are mutually overlapped.
Further, the second seal has an inner diameter less than the inner diameter of the first seal and an outer diameter greater than the outer diameter of the first seal.
Further, the first sealing member is provided with a mounting groove, and the first sealing member is connected with the sealing body in a jogged manner through the mounting groove.
Further, the sealing body is located first opening, second opening part all is provided with the clamp plate, and the clamp plate sets up to annular structure, clamp plate and sealing body fixed connection, and clamp plate and first sealing member support the laminating.
Further, a connecting pin is arranged on the pressing plate and penetrates through the pressing plate to be fixedly connected with the sealing body.
The floating type sealing assembly has the beneficial effects that the first sealing element at the first opening is used for blocking dust in the external environment, the sealing body is connected with the working equipment through the second opening, the first sealing element at the second opening can effectively reduce instantaneous impact of lubricating oil, the second sealing element and the plunger of the plunger pump synchronously reciprocate, the elastic force of the second sealing element in the vertical direction can be effectively increased by the arrangement of the hollow cavity, the pressure balance of the plunger pump during working can be ensured, the elastic change can be realized according to the unstable jumping of the plunger pump, the stability of sealing performance is maintained, the arrangement of the drainage groove ensures medium flow in the installation cavity, further ensures that the second sealing element reciprocates along the installation cavity, the drainage groove towards the second opening is communicated with the working equipment, lubricating oil in the working equipment can pass through the drainage groove to enter and exit the installation cavity under the action of the reciprocating motion of the second sealing element, the instantaneous impact of the lubricating oil can be further reduced, and the stability of the working environment in the working equipment can be effectively enhanced.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present utility model will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the utility model are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 is a schematic view of a floating seal assembly according to the present utility model.
Reference numerals illustrate:
1. the sealing body, the mounting cavity, the 111, the sliding assisting layer, the 12, the first opening, the 13, the second opening, the 14, the drainage groove;
2. A first seal member 21, a mounting groove;
3. 31, a hollow cavity;
4. pressing plate 41, connecting pin.
Detailed Description
The following description of the embodiments of the present utility model will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Any number of elements in the figures are for illustration and not limitation, and any naming is used for distinction only and not for any limiting sense.
The principles and spirit of the present utility model are explained in detail below with reference to several representative embodiments thereof.
The utility model provides a floating type sealing assembly, which is shown in fig. 1, and comprises a sealing body 1, wherein the sealing body 1 comprises a mounting cavity 11, a first opening 12 and a second opening 13, the first opening 12 and the second opening 13 are respectively provided with a first sealing member 2, a second sealing member 3 is arranged in the mounting cavity 11, the outer wall of the second sealing member 3 is mutually propped against the inner wall of the mounting cavity 11, the second sealing member 3 is in sliding fit with the inner wall of the mounting cavity 11, the second sealing member 3 is provided with a hollow cavity 31 with an annular structure, the axes of the hollow cavity 31 and the second sealing member 3 are mutually overlapped, the two sides of the second sealing member 3 on the sealing body 1 are respectively provided with a drainage groove 14, and the drainage grooves 14 are mutually communicated with the mounting cavity 11.
Through adopting above-mentioned technical scheme, first sealing member 2 of first opening 12 department is used for the dust of external environment to block, sealing body 1 is connected with the operating device through second opening 13, first sealing member 2 of second opening 13 department can effectively reduce the instantaneous impact of lubricating oil, the synchronous reciprocating motion of plunger of second sealing member 3 and plunger pump, the setting of cavity 31 can effectively increase the elastic force on the vertical direction of second sealing member 3, can guarantee the pressure balance of plunger pump during operation, can be according to the elastic variation when unstable beating appears in the plunger pump, keep sealing performance's stability, the setting of chute 14 guarantees the medium flow in the installation cavity 11, and then guarantee the reciprocating motion in the installation cavity 11 of second sealing member 3, chute 14 towards second opening 13 department is linked together with the operating device, lubricating oil in the operating device can further reduce the instantaneous impact of lubricating oil under the effect of second sealing member 3 reciprocating motion through chute 14 business turn over installation cavity 11, can effectively strengthen the stability of operating environment in the operating device.
In the present embodiment, the air is circulated through the leakage groove provided in the sealing body 1 on the side facing the first opening 12, and the lubricating oil is circulated through the leakage groove provided in the sealing body 1 on the side facing the second opening 13.
In this embodiment, the sliding-assisting layer 111 is disposed on the side, which is attached to the inner wall of the mounting cavity 11 and the second sealing member 3, of the second sealing member 3, which is in sliding fit with the sliding-assisting layer 111, so as to ensure the tightness of the contact surface between the second sealing member 3 and the inner wall of the mounting cavity 11 and ensure the smoothness of the sliding of the second sealing member 3 along the inner wall of the mounting cavity 11.
In this embodiment, the first seal member 2 and the second seal member 3 are each provided in an annular structure, and the axes of the first seal member 2, the second seal member 3, and the seal body 1 overlap each other.
It should be noted that, the first sealing element 2 and the second sealing element 3 are made of elastic materials, in this embodiment, the inner diameter of the second sealing element 3 is smaller than the inner diameter of the first sealing element 2, so that the outer wall of the plunger pump of the second sealing element 3 is more fixed, the second sealing element 3 is ensured to reciprocate synchronously along with the plunger, the outer diameter of the second sealing element 3 is larger than the outer diameter of the first sealing element 2, and the reciprocating stroke of the second sealing element 3 is limited.
In this embodiment, the first sealing member 2 is provided with the mounting groove 21, and the first sealing member 2 is connected with the sealing body 1 through the mounting groove 21, so that the mounting of the first sealing member 2 is facilitated, and the stability of the mounting of the first sealing member 2 on the sealing body 1 can be effectively increased.
In this embodiment, the sealing body 1 is located at the first opening 12 and the second opening 13 and is provided with the pressing plate 4, the pressing plate 4 is in an annular structure, the pressing plate 4 is fixedly connected with the sealing body 1, the pressing plate 4 abuts against the first sealing member 2, the pressing plate 4 compresses the first sealing member 2, and the stability and the fixity of the first sealing member 2 on the sealing body 1 can be further increased.
In this embodiment, the pressing plate 4 is provided with a connecting pin 41, and the connecting pin 41 penetrates through the pressing plate 4 and is fixedly connected with the sealing body 1, so that the pressing plate 4 is mounted and fixed on the sealing body 1.
From the foregoing description of the present specification, it will be further understood by those skilled in the art that terms such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate an azimuth or a positional relationship, are based on the azimuth or the positional relationship shown in the drawings of the present specification, are for convenience only in explaining aspects of the present utility model and simplifying the description, and do not explicitly or implicitly refer to devices or elements having to have the specific azimuth, be constructed and operate in the specific azimuth, and thus the azimuth or positional relationship terms described above should not be interpreted or construed as limitations of aspects of the present utility model.
In addition, in the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless specifically defined otherwise.