Self-lubricating mechanical sealing device

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a self-lubricating mechanical sealing device. The lubricating device comprises a static ring, a lubricating oil box is fixedly installed on the top face of the static ring, a lubricating oil pump is fixedly installed on one side of the surface of the lubricating oil box, an oil inlet pipe is arranged at the input end of the lubricating oil pump in a penetrating mode, a purification mechanism is arranged at one end of the oil inlet pipe in a penetrating mode, and an oil pumping pipe is arranged on one side of the purification mechanism in a penetrating mode. According to the self-lubricating mechanical sealing device, through the arrangement of the purification mechanism, lubricating oil is injected into the lubricating oil box, the lubricating oil enters an oil way of a port through the oil return pipe, the joint of the port of the static ring and the port of the movable ring is lubricated, abrasion is reduced, the lubricating oil pump is opened, and the lubricating oil in the oil way is pumped out through the oil pumping pipe and conveyed into the purification box; and residual impurities in the lubricating oil are filtered by the microporous filter screen and then return to the oil path through the return pipe, so that the lubricating effect is prevented from being influenced by the impurities in the lubricating oil.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a self-lubricating mechanical seal device. Background Art

[0002] A mechanical seal is a device that prevents fluid leakage by having at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.

[0003] A self-lubricating mechanical seal device is disclosed in the announcement number CN211901586U. Although the mechanical seal device has a simple structure and uses lubricating oil instead of water cooling, it can greatly save water and electricity resources. The lubricating oil forms a clean oil lubricating film between the sealing surfaces, which greatly improves the service life of the seal.

[0004] However, although the port contact surface of the self-lubricating mechanical seal device is lubricated with lubricating oil, when used for a long time, more metal particle impurities will exist in the lubricating oil, affecting the lubrication effect. Utility Model Content

[0005] The utility model aims to provide a self-lubricating mechanical sealing device to solve the problem that a large amount of metal particle impurities may exist in the lubricating oil during long-term use, thereby affecting the lubrication effect.

[0006] To achieve the above-mentioned purpose, a self-lubricating mechanical sealing device is provided, including a stationary ring, a lubricating oil box is fixedly installed on the top surface of the stationary ring, a lubricating oil pump is fixedly installed on one side of the surface of the lubricating oil box, an oil inlet pipe is provided through the input end of the lubricating oil pump, a purification mechanism is provided through one end of the oil inlet pipe, an oil extraction pipe is provided through one side of the purification mechanism, an oil return pipe is provided through the back side of the lubricating oil box, rotating holes are symmetrically provided on both sides of the surface of the stationary ring, a positioning mechanism is rotatably provided inside the rotating holes, and a moving ring is movably provided on one side of the stationary ring.

[0007] As a further improvement of the technical solution, the purification mechanism includes a purification box which is arranged through one end of the oil inlet pipe, and a microporous filter is fixedly installed on the top surface of the purification box, and the microporous filter is used to filter impurities in the lubricating oil.

[0008] As a further improvement of the technical solution, the positioning mechanism includes a rotating rod rotatably arranged inside the rotating hole, and a positioning roller is fixedly arranged at one end of the rotating rod, and the positioning roller is used to limit the moving ring.

[0009] As a further improvement of the technical solution, a port is fixedly arranged inside the stationary ring through a compensation spring, and an oil passage is arranged in the middle of the surface of the port, which facilitates the circulation of lubricating oil.

[0010] As a further improvement of the technical solution, one end of the oil suction pipe is penetrated and arranged on one side inside the oil passage, and one end of the oil return pipe is penetrated and arranged on the side of the oil passage far from the oil suction pipe. The oil return pipe facilitates the conveyance of the purified lubricating oil back to the oil passage.

[0011] As a further improvement of the technical solution, an oil delivery pipe is penetrated and arranged at the output end of the lubricating oil pump, and one end of the oil delivery pipe is penetrated and arranged inside the lubricating oil box. The oil delivery pipe facilitates the conveyance of the lubricating oil into the lubricating oil box.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In this self-lubricating mechanical seal device, through the setting of the purification mechanism, lubricating oil is injected into the lubricating oil box. The lubricating oil enters the oil passage of the port through the oil return pipe, lubricates the connection between the ports of the stationary ring and the rotating ring, reduces wear. The lubricating oil pump is turned on, and the lubricating oil in the oil passage is pumped out through the oil suction pipe and conveyed into the purification box. The microporous filter screen filters the residual impurities in the lubricating oil, and then returns to the oil passage through the return pipe again, avoiding the influence of impurities in the lubricating oil on the lubrication effect.

[0014] 2. In this self-lubricating mechanical seal device, through the setting of the positioning mechanism, after the rotating ring and the stationary ring are butted, when the rotating ring rotates, it drives the positioning roller to rotate accordingly. The positioning roller positions the rotating ring, avoiding the deviation and misalignment of the rotating ring, which on the one hand affects the use, and on the other hand will also increase wear. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the overall disassembly of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the stationary ring of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the positioning mechanism of the present utility model;

[0019] Figure 5 is the structural schematic diagram of the purification mechanism of the present utility model.

[0020] The meanings of each label in the figure are as follows:

[0021] 1. Stationary ring; 2. Lubricating oil box; 3. Lubricating oil pump; 4. Inlet oil pipe; 5. Purifying mechanism; 501. Purifying box; 502. Microporous filter screen; 6. Oil suction pipe; 7. Return oil pipe; 8. Positioning mechanism; 801. Rotating rod; 802. Positioning roller; 9. Rotating ring; 10. Port; 11. Oil circuit; 12. Oil delivery pipe. Detailed implementation mode

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0025] Embodiment

[0026] Please refer to Figures 1 - 5As shown in the figure, the purpose of this embodiment is to provide a self-lubricating mechanical seal device, which includes a stationary ring 1. A lubricating oil box 2 is fixedly installed on the top surface of the stationary ring 1. A lubricating oil pump 3 is fixedly installed on one side of the surface of the lubricating oil box 2. An oil inlet pipe 4 is penetrated through the input end of the lubricating oil pump 3. One end of the oil inlet pipe 4 is penetrated with a purification mechanism 5. Through the setting of the purification mechanism 5, lubricating oil is injected into the lubricating oil box 2. The lubricating oil enters the oil passage 11 of the port 10 through the oil return pipe 7, lubricates the connection of the port 10 between the stationary ring 1 and the rotating ring 9, reduces wear. The lubricating oil pump 3 is turned on, and the lubricating oil in the oil passage 11 is pumped out through the oil extraction pipe 6 and transported to the purification box 501. The microporous filter screen 502 filters the residual impurities in the lubricating oil, and then returns to the oil passage 11 through the oil return pipe 7 again, avoiding the influence of impurities in the lubricating oil on the lubrication effect;

[0027] One side of the purification mechanism 5 is penetrated with an oil extraction pipe 6. The back of the lubricating oil box 2 is penetrated with an oil return pipe 7. Rotating holes are symmetrically arranged on both sides of the surface of the stationary ring 1. A positioning mechanism 8 is rotatably arranged inside the rotating holes. Through the setting of the positioning mechanism 8, after the rotating ring 9 is docked with the stationary ring 1, when the rotating ring 9 rotates, the positioning roller 802 is driven to rotate accordingly. The positioning roller 802 positions the rotating ring 9, avoiding the deviation and dislocation of the rotating ring 9, which will affect the use on the one hand and increase wear on the other hand. A rotating ring 9 is movably arranged on one side of the stationary ring 1;

[0028] Among them, the working principle of the mechanical seal is well-known to those skilled in the art. It refers to a device that prevents fluid leakage formed by at least a pair of end faces perpendicular to the rotation axis, which are kept in contact and relatively slid under the action of fluid pressure and the elastic force of the compensation mechanism and with the cooperation of the auxiliary seal. The main components are the stationary ring and the rotating ring. This is the prior art, and the specific components will not be elaborated here.

[0029] Please refer to Figure 5 , the purification mechanism 5 includes a purification box 501 penetrated through one end of the oil inlet pipe 4, and a microporous filter screen 502 is fixedly installed on the top surface of the purification box 501.

[0030] Through the setting of the purification mechanism 5, it plays a role in filtering and purifying the impurities in the lubricating oil.

[0031] Please refer to Figure 4 , the positioning mechanism 8 includes a rotating rod 801 rotatably arranged inside the rotating hole, and a positioning roller 802 is fixedly arranged at one end of the rotating rod 801.

[0032] Through the setting of the positioning mechanism 8, it plays a role in limiting the rotating ring 9.

[0033] Please refer to Figure 3 , a port 10 is fixedly arranged inside the stationary ring 1 through a compensation spring, and an oil passage 11 is arranged in the middle of the surface of the port 10.

[0034] The oil passage 11 is provided to circulate lubricating oil and lubricate the port 10 .

[0035] See also Figure 3 One end of the oil extraction pipe 6 is disposed through one side of the oil circuit 11 , and one end of the oil return pipe 7 is disposed through one side of the oil circuit 11 away from the oil extraction pipe 6 .

[0036] The provision of the oil return pipe 7 facilitates the lubricating oil to flow back to the oil path 11 .

[0037] See also Figure 5 An oil delivery pipe 12 is provided through the output end of the lubricating oil pump 3 , and one end of the oil delivery pipe 12 is provided through the interior of the lubricating oil box 2 .

[0038] The oil delivery pipe 12 is provided to deliver the purified lubricating oil to the lubricating oil box 2 .

[0039] Working steps: inject lubricating oil into the lubricating oil box 2, and the lubricating oil enters the oil path 11 of the port 10 through the oil return pipe 7 to lubricate the connection between the stationary ring 1 and the dynamic ring 9 at the port 10 to reduce wear;

[0040] The lubricating oil pump 3 is turned on, and the lubricating oil in the oil circuit 11 is pumped out through the oil extraction pipe 6 and transported to the purification box 501. The microporous filter 502 filters the impurities remaining in the lubricating oil, and then returns to the oil circuit 11 again through the oil return pipe 7 to prevent the impurities in the lubricating oil from affecting the lubrication effect;

[0041] After the moving ring 9 is docked with the stationary ring 1 , when the moving ring 9 rotates, it drives the positioning roller 802 to rotate along with it, and the positioning roller 802 positions the moving ring 9 to prevent the moving ring 9 from shifting or misaligning.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A self-lubricating mechanical seal device, characterized in that: It includes a stationary ring (1), on the top surface of the stationary ring (1), a lubricating oil box (2) is fixedly installed, on one side of the surface of the lubricating oil box (2), a lubricating oil pump (3) is fixedly installed, at the input end of the lubricating oil pump (3), an oil inlet pipe (4) is penetratedly arranged, at one end of the oil inlet pipe (4), a purification mechanism (5) is penetratedly arranged, on one side of the purification mechanism (5), an oil suction pipe (6) is penetratedly arranged, at the back of the lubricating oil box (2), an oil return pipe (7) is penetratedly arranged, on both sides of the surface of the stationary ring (1), rotation holes are symmetrically arranged, inside the rotation holes, a positioning mechanism (8) is rotatably arranged, and on one side of the stationary ring (1), a moving ring (9) is movably arranged.

2. The self-lubricating mechanical seal device according to claim 1, wherein: The purification mechanism (5) includes a purification box (501) penetratedly arranged at one end of the oil inlet pipe (4), and on the top surface of the purification box (501), a microporous filter screen (502) is fixedly installed.

3. The self-lubricating mechanical seal device according to claim 1, characterized in that: The positioning mechanism (8) includes a rotating rod (801) rotatably arranged inside the rotation hole, and at one end of the rotating rod (801), a positioning roller (802) is fixedly arranged.

4. The self-lubricating mechanical seal device according to claim 1, wherein: Inside the stationary ring (1), a port (10) is fixedly arranged through a compensation spring, and in the middle of the surface of the port (10), an oil passage (11) is arranged.

5. The self-lubricating mechanical seal device according to claim 4, characterized in that: One end of the oil suction pipe (6) is penetratedly arranged on one side inside the oil passage (11), and one end of the oil return pipe (7) is penetratedly arranged on the side inside the oil passage (11) far from the oil suction pipe (6).

6. The self-lubricating mechanical seal device according to claim 1, characterized in that: At the output end of the lubricating oil pump (3), an oil delivery pipe (12) is penetratedly arranged, and one end of the oil delivery pipe (12) is penetratedly arranged inside the lubricating oil box (2).

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