CN218377599U - Sealing structure of protection device for speed reducer of submersible electric screw pump - Google Patents
Sealing structure of protection device for speed reducer of submersible electric screw pump Download PDFInfo
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- CN218377599U CN218377599U CN202122998450.2U CN202122998450U CN218377599U CN 218377599 U CN218377599 U CN 218377599U CN 202122998450 U CN202122998450 U CN 202122998450U CN 218377599 U CN218377599 U CN 218377599U
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Abstract
The utility model relates to a sealing structure of a protection device for an oil-submersible electric screw pump reducer, which is used for realizing the sealing connection of a shell and a connecting section of the protection device for the oil-submersible electric screw pump reducer, wherein the end part of the shell is provided with a sealing groove, a polytetrafluoroethylene sealing ring is embedded in the sealing groove, and the inner periphery of the shell is sequentially provided with a first sealing section and an inner thread section along the direction far away from the sealing groove; be provided with on the linkage segment with the step face of the inseparable butt of polytetrafluoroethylene sealing ring, keep away from on the linkage segment the direction of step face has set gradually the sealed section of second and external screw thread section, external screw thread section with internal thread section threaded connection, the coaxial two at least ring channels that are provided with on the sealed section of second, two all inlay in the ring channel and be equipped with O shape sealing washer, the inseparable butt of O shape sealing washer is in first sealed section with between the sealed section of second. The utility model discloses can improve oily electric screw pump reducer protection device's for sealing performance.
Description
Technical Field
The utility model relates to an oil-submersible electric screw pump mechanical oil recovery technical field, concretely relates to oil-submersible electric screw pump is protection device's seal structure for reducer.
Background
The existing sealing structure of the protector for the speed reducer of the submersible electric screw pump only uses a single O-shaped sealing ring for sealing, has poor sealing effect and is easy to leak.
Therefore, how to design a protector for a speed reducer with good sealing performance is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
To the defect among the prior art, the to-be-solved technical problem of the utility model is to provide a protection device's for latent oil electric screw pump speed reducer seal structure to improve latent oil electric screw pump speed reducer's sealing performance.
In order to solve the technical problem, the utility model provides a sealing structure of protector for submersible electric screw pump reducer, which is used for realizing the sealing connection of the shell and the connecting section of the protector for submersible electric screw pump reducer, the end part of the shell is provided with a sealing groove, a polytetrafluoroethylene sealing ring is embedded in the sealing groove, a first sealing section and an internal thread section are sequentially arranged on the inner circumference of the shell along the direction far away from the sealing groove, and the inner diameter of the first sealing section is larger than that of the internal thread section; be provided with on the linkage segment with the step face of the inseparable butt of polytetrafluoroethylene sealing ring, follow on the linkage segment and keep away from the direction of step face has set gradually second seal segment and external screw thread section, the external diameter of second seal segment is greater than the external diameter of external screw thread section, external screw thread section with internal thread section threaded connection, coaxial two at least ring channels, two of being provided with on the second seal segment all inlay in the ring channel and be equipped with O shape sealing washer, the inseparable butt of O shape sealing washer is in first seal segment with between the second seal segment.
Preferably, the cross section of the polytetrafluoroethylene sealing ring is rectangular.
Preferably, an inner circumference of the seal groove penetrates through an inner wall of the housing.
Preferably, a chamfer is arranged at the joint of the sealing groove and the first sealing section.
Preferably, a round angle is arranged at the edge of the annular groove.
The utility model discloses following beneficial effect has: the utility model discloses a sealing connection between casing and the linkage segment uses the design of two O shape sealing washer to improve sealed effect to realized the sealed of the tip of casing and linkage segment through the polytetrafluoroethylene sealing ring, further improved the sealing performance of the protection device for the electrical screw pump speed reducer that dives.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of a protection device for a submersible electric screw pump reducer according to an embodiment of the present invention;
fig. 2 is a schematic view of a sealing connection structure between the housing and the connection section according to an embodiment of the present invention.
Reference numerals are as follows:
1-a shell; 11-a seal groove; 12-a first seal segment; 13-internal thread section; 2-a connecting segment; 21-a second seal segment; 211-an annular groove; 22-external thread section; 3-a polytetrafluoroethylene sealing ring; 4-O-shaped sealing ring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and fig. 2, the present embodiment provides a sealing structure of a protection device for a submersible electric screw pump reducer, which is used for realizing the sealing connection between a housing 1 and a connecting section 2 of the protection device for the submersible electric screw pump reducer, and as can be seen from fig. 1, the protection device for the submersible electric screw pump reducer of the present embodiment includes three connecting sections 2 and two housings 1, the connecting sections 2 and the housings 3 are arranged in a staggered manner, and the housings 3 are in threaded connection with two adjacent connecting sections 2. It should be noted that, in this embodiment, only the sealing structure between the housing 1 and the connecting section 2 is improved, and other structures of the protection device for the submersible electric screw pump speed reducer are the prior art, and are not described herein again.
Referring to fig. 2, a sealing groove 11 is formed in an end portion of the casing 1, a teflon sealing ring 3 is embedded in the sealing groove 11, a first sealing section 12 and an internal thread section 13 are sequentially arranged on an inner periphery of the casing 1 in a direction away from the sealing groove 11, and an inner diameter of the first sealing section 12 is larger than an inner diameter of the internal thread section 13. The connecting section 2 is provided with a step surface tightly abutted to the polytetrafluoroethylene sealing ring 3, the connecting section 2 is sequentially provided with a second sealing section 21 and an external thread section 22 along the direction far away from the step surface, the outer diameter of the second sealing section 21 is larger than that of the external thread section 22, the external thread section 22 is in threaded connection with the internal thread section 13, the second sealing section 21 is coaxially provided with two annular grooves 211, and O-shaped sealing rings 4,O are embedded in the two annular grooves 211 and tightly abutted to the space between the first sealing section 12 and the second sealing section 21.
Specifically, the cross section of the teflon sealing ring 3 is rectangular, the inner periphery of the sealing groove 11 penetrates through the inner wall of the casing 1, a chamfer is arranged at the joint of the sealing groove 11 and the first sealing section 12, and a fillet is arranged at the edge of the annular groove 211.
In the embodiment, the shell 1 is in sealing connection with the connecting section 2, the double-O-shaped sealing ring 4 improves the sealing effect, the end parts of the shell 1 and the connecting section 2 are sealed through the polytetrafluoroethylene sealing ring 3, and the sealing performance of the protection device for the submersible electric screw pump speed reducer is further improved.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be an electrical connection; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, a number of specific details are described. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (5)
1. The utility model provides a oily electric screw pump is protection device's seal structure for speed reducer for dive for the sealed connection of casing and linkage segment of the protection device for the speed reducer of the oily electric screw pump of realization, its characterized in that:
a sealing groove is formed in the end of the shell, a polytetrafluoroethylene sealing ring is embedded in the sealing groove, a first sealing section and an internal thread section are sequentially arranged on the inner periphery of the shell along the direction far away from the sealing groove, and the inner diameter of the first sealing section is larger than that of the internal thread section;
be provided with on the linkage segment with the step face of the inseparable butt of polytetrafluoroethylene sealing ring, keep away from on the linkage segment the direction of step face has set gradually the sealed section of second and external screw thread section, the external diameter of the sealed section of second is greater than the external diameter of external screw thread section, external screw thread section with internal thread section threaded connection, the coaxial two at least ring channels, two of being provided with on the sealed section of second all the inlay in the ring channel is equipped with O shape sealing washer, the inseparable butt of O shape sealing washer is in first sealed section with between the sealed section of second.
2. The sealing structure of the protection device for the submersible electric screw pump reducer according to claim 1, characterized in that:
the cross section of the polytetrafluoroethylene sealing ring is rectangular.
3. The sealing structure of the protection device for the submersible electric screw pump speed reducer according to claim 1, characterized in that:
the inner periphery of the seal groove penetrates through the inner wall of the shell.
4. The sealing structure of the protection device for the submersible electric screw pump reducer according to claim 1, characterized in that:
and a chamfer is arranged at the joint of the sealing groove and the first sealing section.
5. The sealing structure of the protection device for the submersible electric screw pump reducer according to claim 1, characterized in that:
and a fillet is arranged at the edge of the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998450.2U CN218377599U (en) | 2021-12-01 | 2021-12-01 | Sealing structure of protection device for speed reducer of submersible electric screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998450.2U CN218377599U (en) | 2021-12-01 | 2021-12-01 | Sealing structure of protection device for speed reducer of submersible electric screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218377599U true CN218377599U (en) | 2023-01-24 |
Family
ID=84950281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122998450.2U Active CN218377599U (en) | 2021-12-01 | 2021-12-01 | Sealing structure of protection device for speed reducer of submersible electric screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218377599U (en) |
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2021
- 2021-12-01 CN CN202122998450.2U patent/CN218377599U/en active Active
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