High speed pump oil side seal

Abstract

The utility model relates to mechanical seal technical field especially relates to a high -speed pump oil side seal. The spring seat is fixed on the pump cover through screw, the non -compensation ring is installed on the pump shaft, and the spring and the compensation ring are assembled between the spring seat and the non -compensation ring. The sealing surface between the compensation ring and the non -compensation ring is attached. The snap ring is installed on the spring seat and plays the positioning role. The O -ring is assembled between the spring seat and the compensation ring. The spring does not break and rotates together with the pump shaft. The non -compensation ring is made of hard alloy, and the dynamic pressure groove is uniformly arranged on the sealing surface. The dynamic pressure groove of the non -compensation ring is bidirectional design, and when the pump shaft reverses, still can play the sealing effect. The utility model discloses the technical scheme solves the problem that the contact type mechanical seal in the prior art cannot meet the long -term operation under high speed, cannot reach the stable sealing state, the small leakage, the long service life, the low power consumption and other problems.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a high-speed pump oil side seal. Background Technology

[0002] The development of the petrochemical industry and the widespread application of high-speed pumps have led to improvements in the sealing parameters of pump systems. Simultaneously, increasingly stringent industry requirements for energy conservation and environmental protection mean that conventional contact-type mechanical seals are insufficient for high-speed operating conditions due to safety and stability considerations. High-speed pump oil-side seals, however, can operate at high speeds for extended periods, exhibiting stable sealing, low leakage, and long service life. Therefore, high-speed pump oil-side seals will play an increasingly important role in the petrochemical industry.

[0003] In view of the problems existing in the above-mentioned existing technologies, it is necessary to study and design a new type of high-speed pump oil side seal to overcome the problems existing in the existing technologies. Summary of the Invention

[0004] To address the technical challenges of existing contact mechanical seals that cannot meet the requirements of stable sealing, low leakage, long service life, and low power consumption during long-term operation at high speeds, a high-speed pump oil side seal is proposed.

[0005] The technical means adopted in this utility model are as follows: A high-speed pump oil side seal includes: a spring seat, a spring, a compensating ring, and a non-compensating ring; Furthermore, the spring seat is fixed to the pump cover by screws; Furthermore, the non-compensating ring is installed on the pump shaft; Furthermore, a spring and a compensation ring are assembled between the spring seat and the non-compensating ring.

[0006] Furthermore, the sealing surfaces of the compensation ring and the non-compensation ring are in contact.

[0007] Furthermore, a retaining ring is installed on the spring seat, which plays a positioning role for the compensation ring during the installation process.

[0008] Furthermore, an O-ring is fitted between the spring seat and the compensating ring.

[0009] Furthermore, the spring does not break and the pump shaft rotates together.

[0010] Furthermore, the non-compensating ring is made of hard alloy, and its sealing surface is evenly provided with dynamic pressure grooves.

[0011] Furthermore, the dynamic pressure groove of the non-compensating ring is designed in both directions, so it can still provide a sealing function when the pump shaft reverses.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The high-speed pump oil side seal provided by this utility model has a smaller force provided by the spring, which helps to form an air film on the end face; 2. The high-speed pump oil side seal provided by this utility model has a spring that does not rotate with the pump shaft, resulting in a more stable spring force at high speeds and enhanced sealing reliability.

[0013] 3. The high-speed pump oil side seal provided by this utility model has a dynamic pressure groove on the non-compensating ring surface. When the pump is running, an air film is formed on the end face, which not only prevents leakage but also reduces power consumption and end face wear, and can operate for a long time at high speed. 4. The high-speed pump oil side seal provided by this utility model has a bidirectional structure with a non-compensated annular dynamic pressure groove, which can still play a sealing role when the pump shaft rotates in the opposite direction.

[0014] In summary, the technical solution of this utility model solves the problems of existing contact mechanical seals, such as the inability to meet the requirements of long-term operation at high speeds, stable sealing, low leakage, long service life, and low power consumption. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a diagram of the groove shape of the non-compensated ring end face of this utility model.

[0017] In the diagram: 1. Spring seat; 2. Spring; 3. O-ring; 4. Compensating ring; 5. Snap ring; 6. Non-compensating ring; 7. Screw. Detailed Implementation

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0022] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] like Figure 1 As shown, this utility model provides a high-speed pump oil side seal including: a spring seat 1, a spring 2, a compensating ring 4, and a non-compensating ring 6; the spring seat 1 is fixedly mounted on the pump cover by screws 7; the non-compensating ring 6 is mounted on the pump shaft; the spring 2 and the compensating ring 4 are assembled between the spring seat 1 and the non-compensating ring 6.

[0026] like Figure 1 As shown, the sealing surfaces of the compensation ring 4 and the non-compensation ring 6 are in contact.

[0027] like Figure 1 As shown, a retaining ring 5 is installed on the spring seat 1, which plays a positioning role for the compensation ring 4 during the installation process.

[0028] like Figure 1 As shown, an O-ring 3 is assembled between the spring seat 1 and the compensation ring 4.

[0029] like Figure 1 As shown, spring 2 does not break and the pump shaft rotates together.

[0030] like Figure 2 As shown, the non-compensation ring 6 is made of hard alloy, and its sealing surface is evenly provided with dynamic pressure grooves.

[0031] like Figure 2 As shown, the dynamic pressure groove of the non-compensation ring 6 is a bidirectional design, which can still play a sealing role when the pump shaft reverses.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-speed pump oil-side seal, characterized in that: The high-speed pump oil side seal includes: spring seat (1), spring (2), compensation ring (4), and non-compensation ring (6); The spring seat (1) is fixedly mounted on the pump cover by screws (7); The non-compensating ring (6) is installed on the pump shaft; A spring (2) and a compensation ring (4) are assembled between the spring seat (1) and the non-compensation ring (6).

2. The high-speed pump oil-side seal according to claim 1, characterized in that: The sealing surfaces of the compensation ring (4) and the non-compensation ring (6) are in contact.

3. The high-speed pump oil-side seal according to claim 1, characterized in that: A retaining ring (5) is installed on the spring seat (1), which plays a positioning role for the compensation ring (4) during the installation process.

4. The high-speed pump oil-side seal according to claim 1, characterized in that: An O-ring (3) is fitted between the spring seat (1) and the compensation ring (4).

5. The high-speed pump oil-side seal according to claim 1, characterized in that: The spring (2) rotates together with the pump shaft without breaking.

6. The high-speed pump oil-side seal according to claim 1, characterized in that: The non-compensation ring (6) is made of hard alloy, and dynamic pressure grooves are evenly distributed on its sealing surface.

7. The high-speed pump oil-side seal according to claim 6, characterized in that: The dynamic pressure groove of the non-compensation ring (6) is designed in both directions, so it can still play a sealing role when the pump shaft reverses.

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