Mechanical sealing structure for multiphase multiphase pump

Abstract

The utility model discloses a mechanical sealing structure for a multiphase multiphase pump, and relates to the technical field of sealing structures. The anti-falling structure comprises a pump body shell, a plurality of anti-falling mechanisms and sealing mechanisms are arranged on the pump body shell, the inner wall of the pump body shell is connected with a sealing structure shell in a sliding mode, the inner wall of the pump body shell is connected with a shaft body in a rotating mode, and each anti-falling mechanism comprises a nut fixedly connected to the left side of the inner wall of the pump body shell. And the inner wall of the nut is in threaded connection with a bolt, the right side of the inner wall of the pump body shell is rotationally connected with a limiting ring, and the inner wall of the limiting ring is slidably connected with a rotating shaft. According to the mechanical sealing structure for the multiphase multiphase pump, due to the arrangement of the anti-falling mechanism, the problems that in the using process of an existing mechanical sealing structure for the multiphase multiphase pump, due to the fact that a rotating shaft in the pump body runs at a high speed, the sealing structure is prone to loosening, gaps are formed between the sealing structure and the pump body, and the sealing effect of the sealing structure is reduced due to the gaps are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sealing structure, especially, relate to a mechanical sealing structure for multiphase mixed delivery pump. BACKGROUND

[0002] The multiphase mixed delivery pump is widely applied in petroleum, chemical industry and other fields, and the mechanical sealing performance is crucial.The traditional mechanical sealing structure is prone to leakage and aggravated abrasion under the complex working condition of multiphase medium.The gas, liquid and solid particles coexist in the multiphase flow, which can destroy the stability of the liquid film of the sealing surface, resulting in sealing failure.Meanwhile, the abrasion of the sealing ring caused by the scouring of the particles shortens the service life of the sealing device, increases the maintenance cost and downtime, and has an urgent practical significance for improving the sealing reliability and durability and ensuring the efficient and stable operation of the production system.

[0003] However, the existing mechanical sealing structure for multiphase mixed delivery pump is prone to loosening during use due to the high-speed rotation of the rotating shaft in the pump body, resulting in gaps between the sealing structure and the pump body, which reduces the sealing effect of the sealing structure. UTILITY MODEL CONTENT

[0004] The utility model discloses a mechanical sealing structure for multiphase mixed delivery pump, which solves the problem of the existing mechanical sealing structure for multiphase mixed delivery pump, i.e., the sealing structure is prone to loosening during use due to the high-speed rotation of the rotating shaft in the pump body, resulting in gaps between the sealing structure and the pump body, which reduces the sealing effect of the sealing structure.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0006] The utility model discloses a mechanical sealing structure for multiphase mixed delivery pump, which solves the problem of the existing mechanical sealing structure for multiphase mixed delivery pump, i.e., the sealing structure is prone to loosening during use due to the high-speed rotation of the rotating shaft in the pump body, resulting in gaps between the sealing structure and the pump body, which reduces the sealing effect of the sealing structure.

[0007] The inner wall of the pump body shell is slidably connected with a sealing structure shell, and the inner wall of the pump body shell is rotatably connected with a shaft body; the anti-falling mechanism comprises a nut fixedly connected to the left side of the inner wall of the pump body shell, the inner wall of the nut is threadedly connected with a bolt, the right side of the inner wall of the pump body shell is rotatably connected with a limiting ring, the inner wall of the limiting ring is slidably connected with a rotating shaft, the left side of the rotating shaft is fixedly connected with a limiting block one, the outer wall of the rotating shaft is sleeved with a spring one, the left side of the spring one is fixedly connected with the limiting block one, and the right side of the spring one is fixedly connected with the limiting ring.

[0008] Further, the outer wall of the rotating shaft is fixedly connected with a limiting block two, and the outer wall of the rotating shaft is fixedly connected with a handle.

[0009] Further, the right side of the pump body shell is provided with groove one, groove one is matched with limiting block two, the outer wall of the sealing structure shell is provided with groove two, groove two is matched with limiting block two.

[0010] Further, the sealing mechanism comprises a connecting block fixedly connected to the inner wall of the sealing structure shell, and a sliding block slidingly connected to the inner wall of the connecting block.

[0011] Further, the inner wall of the connecting block is fixedly connected with spring two on the right side, the left side of spring two is fixedly connected with the sliding block, the outer wall of the shaft body is provided with a moving ring, and the inner wall of the moving ring is closely attached to the shaft body.

[0012] Further, the outer wall of the connecting block is fixedly connected with rubber ring one, the outer wall of rubber ring one is closely attached to the sealing structure shell, and the inner wall of the sealing structure shell is fixedly connected with a static ring.

[0013] Further, the left side of the static ring is fixedly connected with rubber ring two, the outer wall of rubber ring two is closely attached to the pump body shell, the outer wall of the static ring is fixedly connected with rubber ring three, and the outer wall of rubber ring three is closely attached to the sealing structure shell.

[0014] The utility model has the following beneficial effects:

[0015] 1. By setting up anti -drop mechanism, can insert sealing structure shell into pump body shell when installing, then bolt is inserted into sealing structure shell, then rotates bolt, makes it turns into nut, thereby fixes sealing structure shell, then can pull handle, makes it pass through the pressure that spring one is added to rotating shaft under the action of limiting block one, makes it take place elastic deformation and produce spring force, when rotating shaft slides, limiting block two will be slid from groove one, when spring one is completely compressed, limiting block two is also completely slid from groove one, then can rotate handle, make it drive limiting block two to be inserted into groove two, so that can avoid that sealing structure is loose under the high -strength operation of device, lead to the condition that the gap appears between sealing structure and device, so as to guarantee the normal use of sealing structure;

[0016] 2. By setting the sealing mechanism, after the device is installed, spring two is in a compressed state, when the pump is running, the dynamic ring will be extruded by the slider under the action of spring two, so as to be closely attached with the static ring, and the material in the pump body shell will be limited by rubber ring two when the pump is running, and cannot leak from the sealing structure shell, and in the state of closely attaching the static ring and the dynamic ring, the channel between the pump body shell and the outside will be closed, and under the action of rubber ring one, the gas outside will be prevented from entering the device, and when wear occurs between the dynamic ring and the static ring, the dynamic ring will continue to be attached with the static ring under the action of spring two, so that the main body of the pump body and the shaft can be sealed, and the parts connected with the shaft in the sealing mechanism and the parts rubbing with them can always be closely attached, so as to avoid reducing the service life of the device due to wear of the parts.

[0017] Of course, it is not necessary for any product implementing the present application to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a partial sectional structure schematic view of the anti-falling mechanism of the present application.

[0020] Figure 2 It is a partial sectional structure schematic view of the anti-falling mechanism of the present application. Figure 1

[0021] Figure 3 It is a partial sectional structure schematic view of the anti-falling mechanism of the present application. Figure 1

[0022] Figure 4 It is a partial sectional structure schematic view of the anti-falling mechanism of the present application. Figure 1

[0023] Figure 5 It is a partial sectional structure schematic view of the sealing mechanism of the present application.

[0024] Figure 6 It is a partial sectional structure schematic view of the sealing mechanism of the present application. Figure 5

[0025] In the drawings, the component list represented by each number is as follows:

[0026] ​​​​1, pump body shell; 101, sealing structure shell; 102, shaft body; 2, anti-falling mechanism; 201, nut; 202, bolt; 203, limiting ring; 204, rotating shaft; 205, limiting block one; 206, spring one; 207, limiting block two; 208, handle; 209, groove one; 210, groove two; 3, sealing mechanism; 301, connecting block; 302, sliding block; 303, spring two; 304, dynamic ring; 305, rubber ring one; 306, static ring; 307, rubber ring two; 308, rubber ring three. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-6 The utility model discloses a mechanical sealing structure for multiphase mixed delivery pump, including pump body shell 1, pump body shell 1 is provided with a plurality of anti-falling mechanism 2 and sealing mechanism 3, the inner wall sliding connection of pump body shell 1 has sealing structure shell 101, the inner wall rotation connection of pump body shell 1 has shaft body 102, anti-falling mechanism 2 includes the nut 201 of fixed connection in the left side of the inner wall of pump body shell 1, the inner wall screw thread connection of nut 201 has bolt 202, the right side of the inner wall of pump body shell 1 is connected with the limiting ring 203 of rotation, the inner wall sliding connection of limiting ring 203 has rotating shaft 204, the left side fixed connection of rotating shaft 204 has limiting block one 205, the outer wall of rotating shaft 204 is equipped with spring one 206, the left side of spring one 206 is fixedly connected with limiting block one 205, the right side of spring one 206 is fixedly connected with limiting ring 203, the outer wall fixed connection of rotating shaft 204 has limiting block two 207, the outer wall fixed connection of rotating shaft 204 has handle 208, the right side of pump body shell 1 is set with groove one 209, and groove one 209 is matched with limiting block two 207, the outer wall of sealing structure shell 101 is set with groove two 210, and groove two 210 is matched with limiting block two 207, through setting anti-falling mechanism, it can avoid that sealing structure is loose under the high strength operation of device, leads to the condition that the gap between sealing structure and device appears, thereby guaranteeing the normal use of sealing structure.

[0029] The sealing mechanism 3 comprises a connecting block 301 fixedly connected to the inner wall of the sealing structure shell 101, the inner wall of the connecting block 301 is slidably connected with a sliding block 302, the inner wall of the connecting block 301 is fixedly connected with a spring 303 on the right side, the left side of the spring 303 is fixedly connected with the sliding block 302, the outer wall of the shaft body 102 is provided with a dynamic ring 304, the inner wall of the dynamic ring 304 is tightly combined with the shaft body 102, the outer wall of the connecting block 301 is fixedly connected with a rubber ring 305, the outer wall of the rubber ring 305 is tightly combined with the sealing structure shell 101, the inner wall of the sealing structure shell 101 is fixedly connected with a static ring 306, the left side of the static ring 306 is fixedly connected with a rubber ring 307, the outer wall of the rubber ring 307 is tightly combined with the pump body shell 1, the outer wall of the static ring 306 is fixedly connected with a rubber ring 308, the outer wall of the rubber ring 308 is tightly combined with the sealing structure shell 101, by arranging the sealing mechanism, the main body of the pump body and the shaft can be sealed, and the parts connected with the shaft in the sealing mechanism and the parts rubbing with the shaft can be tightly combined, so that the service life of the device is not reduced due to wear of the parts.

[0030] One specific application of the embodiment is: when in use, first move each part of the device to the corresponding position, then insert the sealing structure shell 101 into the pump body shell 1, then insert the bolt 202 into the sealing structure shell 101, then rotate the bolt 202 to make it rotate into the nut 201, so as to fix the sealing structure shell 101, then pull the handle 208, so that the elastic deformation of the spring 206 and the elastic force are generated under the action of the limiting block one 205 through the rotating shaft 204, when the rotating shaft 204 slides, the limiting block two 207 will slide out of the groove one 209, when the spring 206 is completely compressed, the limiting block two 207 is also completely slid out of the groove one 209, then rotate the handle 208 to make it drive the limiting block two 207 to be clamped into the groove two 210, after the device is installed, the spring 303 is in a compressed state, when the pump is running, the dynamic ring 304 will be pressed by the sliding block 302 under the action of the spring 303, so as to tightly combine with the static ring 306, when the pump is running, the material in the pump body shell 1 will be limited by the rubber ring two 307 and cannot leak from the sealing structure shell 101, when the static ring 306 and the dynamic ring 304 are tightly combined, the channel between the pump body shell 1 and the outside will be closed, and under the action of the rubber ring one 305, the gas outside will not enter the device, when the shaft body 102 rotates, the dynamic ring 304 will rotate to generate friction with the static ring 306, when the dynamic ring 304 and the static ring 306 are worn, the dynamic ring 304 will continue to be combined with the static ring 306 under the action of the spring 303.

[0031] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific implementation manners described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.

Claims

1. A mechanical seal structure for a multiphase mixed flow pump, characterized by: Including pump body shell (1), several anti -drop mechanism (2) and sealing mechanism (3) are arranged on the pump body shell (1); The inner wall of the pump body shell (1) is slidably connected with a sealing structure shell (101), and the inner wall of the pump body shell (1) is rotatably connected with a shaft body (102); the anti-drop mechanism (2) comprises a nut (201) fixedly connected to the left side of the inner wall of the pump body shell (1); the inner wall of the nut (201) is threadedly connected with a bolt (202); the right side of the inner wall of the pump body shell (1) is rotatably connected with a limiting ring (203); the inner wall of the limiting ring (203) is slidably connected with a rotating shaft (204); the left side of the rotating shaft (204) is fixedly connected with a limiting block one (205); the outer wall of the rotating shaft (204) is sleeved with a spring one (206); the left side of the spring one (206) is fixedly connected with the limiting block one (205); the right side of the spring one (206) is fixedly connected with the limiting ring (203).

2. A mechanical seal structure for a multiphase mixed flow pump according to claim 1, characterized by The outer wall of the rotating shaft (204) is fixedly connected with a limiting block two (207), and the outer wall of the rotating shaft (204) is fixedly connected with a handle (208).

3. A mechanical seal structure for a multiphase mixed flow pump according to claim 2, characterized by A groove one (209) is formed in the right side of the pump body shell (1), the groove one (209) is matched with the limiting block two (207), and a groove two (210) is formed in the outer wall of the sealing structure shell (101), the groove two (210) is matched with the limiting block two (207).

4. A mechanical seal structure for a multiphase mixed flow pump according to claim 3, characterized in that, The sealing mechanism (3) comprises a connecting block (301) fixedly connected to the inner wall of the sealing structure shell (101), and the inner wall of the connecting block (301) is slidably connected with a sliding block (302).

5. A mechanical seal structure for a multiphase mixed-flow pump according to claim 4, characterized by The right side of the inner wall of the connecting block (301) is fixedly connected with a spring two (303), the left side of the spring two (303) is fixedly connected with the sliding block (302), the outer wall of the shaft body (102) is provided with a dynamic ring (304), and the inner wall of the dynamic ring (304) is closely attached to the shaft body (102).

6. A mechanical seal structure for a multiphase mixed-flow pump according to claim 5, characterized by The outer wall of the connecting block (301) is fixedly connected with a rubber ring one (305), the outer wall of the rubber ring one (305) is closely attached to the sealing structure shell (101), and the inner wall of the sealing structure shell (101) is fixedly connected with a static ring (306).

7. A mechanical seal structure for a multiphase mixed-flow pump according to claim 6, characterized by The left side of the static ring (306) is fixedly connected with a rubber ring two (307), the outer wall of the rubber ring two (307) is closely attached to the pump body shell (1), the outer wall of the static ring (306) is fixedly connected with a rubber ring three (308), and the outer wall of the rubber ring three (308) is closely attached to the sealing structure shell (101).

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