Packaging type mechanical sealing device of high-temperature lean oil pump

Abstract

The utility model belongs to the field of sealing equipment, and particularly relates to a high-temperature lean oil pump packaging type mechanical sealing device which comprises a main body, a shaft sleeve, an inner pressing disc, an outer pressing cover and a positioning block, the shaft sleeve is arranged on the left side of the main body, the inner pressing disc is arranged on the right side of the main body, the outer pressing cover is arranged on the right side of the inner pressing disc, and the shaft sleeve penetrates through the inner pressing disc and the outer pressing cover. A positioning block connected with the shaft sleeve is arranged on the outer pressing cover, sealing grooves are formed in the inner wall and the outer side of the inner pressing disc, sealing rings are installed in the sealing grooves, the sealing rings are matched with the corresponding shaft sleeve and the main body, grooves with openings in one sides are formed in the inner wall and the outer side of the inner pressing disc, and sealing gaskets are installed on the inner walls of one sides of the grooves. The high-temperature lean oil pump is reasonable in design, the sealing rings and the sealing gaskets can be tightly contacted with the corresponding inner wall of the main body and the outer side of the shaft sleeve by extruding the sealing rings and the sealing gaskets, and therefore the sealing performance of the high-temperature lean oil pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing equipment, in particular to a containerized mechanical sealing device for a high-temperature lean oil pump. Background Art

[0002] The pump is widely used in chemical, petroleum, pharmaceutical, pesticide, dye, paint, smelting, electroplating, food and other industries. It can transport any medium of any concentration for a long time under the temperature condition of -20℃-180℃.

[0003] At present, a Chinese patent announcement with announcement number CN201763670U has disclosed a mechanical sealing device for a mortar pump, which includes a shaft, a sleeve mounted on the shaft, a base and a pressure cover matched with the base, the base and the pressure cover are both mounted on the sleeve, and is characterized in that a K-shaped ring is provided in the space surrounded by the base and the sleeve, wherein the two K-shaped rings on the left are arranged in the same direction, and the two K-shaped rings on the right are arranged facing each other, and a water guide ring is provided on the outer periphery of the sleeve in the middle of the two K-shaped rings on the right, and the water guide ring is connected to the external circulation through a water inlet and a water outlet.

[0004] In actual use, it is found that when the internal pressure of the pump chamber increases, the mechanical seal is prone to leakage through the sealing of the sealing ring, thus causing safety accidents. Therefore, we proposed a high-temperature lean oil pump containerized mechanical seal device to solve the above problem. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a container-type mechanical seal device for a high-temperature lean oil pump.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-temperature lean oil pump container-type mechanical seal device comprises a main body, a sleeve, an inner pressure plate, an outer pressure cover and a positioning block, wherein the sleeve is arranged on the left side of the main body, the inner pressure plate is arranged on the right side of the main body, the outer pressure cover is arranged on the right side of the inner pressure plate, and the sleeve passes through the inner pressure plate and the outer pressure cover, and the outer pressure cover is provided with a positioning block connected to the sleeve;

[0008] The inner wall and outer side of the inner pressure plate are provided with sealing grooves, a sealing ring is installed in the sealing groove, and the sealing ring is matched with the corresponding shaft sleeve and the main body;

[0009] A groove with one side being open is provided on the inner wall and the outer side of the inner pressure plate, a sealing gasket is installed on the inner wall of one side of the groove, and the sealing gasket is matched with the corresponding shaft sleeve and the main body.

[0010] Preferably, a plurality of arc-shaped pressure plates 1 are slidably installed in the sealing groove, and the arc-shaped pressure plates 1 are matched with the sealing ring.

[0011] Preferably, a plurality of chambers are formed on the inner pressure plate, and a trapezoidal seat is fixedly mounted on one side of the arc-shaped pressure plate away from the corresponding sealing ring, and the trapezoidal seat extends into the chamber.

[0012] Preferably, a movable hole is opened on an inner wall of one side of the chamber, and an extrusion rod is slidably installed in the movable hole, and the extrusion rod is adapted to the corresponding trapezoidal seat.

[0013] Preferably, a reset mechanism is provided between the extrusion rod and the movable hole, an extrusion assembly is provided on the extrusion rod, and the extrusion assembly is matched with the sealing gasket.

[0014] Preferably, the extrusion assembly includes an L-shaped rod and a second arc-shaped pressure plate, the L-shaped rod is fixedly mounted on the extrusion rod, one end of the L-shaped rod is fixedly mounted with the second arc-shaped pressure plate, and the second arc-shaped pressure plate is adapted to the sealing gasket.

[0015] Preferably, the reset mechanism includes a spring groove, a spring seat and a reset spring, the spring groove is opened on the top and bottom inner walls of the movable hole, the spring seat is slidably installed in the spring groove, and the spring seat is fixedly connected to the extrusion rod, and a reset spring is fixedly installed between the spring seat and the spring groove.

[0016] Preferably, the number of the extrusion rods is set to six to ten, and the six to ten extrusion rods are arranged in a ring shape with equal intervals.

[0017] Beneficial effects of the utility model:

[0018] 1. When the inner pressure plate is installed to the right side of the main body, the sealing ring and the sealing gasket are in contact with the inner wall of the main body and the outer side of the sleeve, thereby achieving the purpose of preliminary sealing;

[0019] 2. When the inner pressure plate is in close contact with the main body, the extrusion rod is squeezed by the main body, so that the extrusion rod can move to the right, the extrusion rod can squeeze the trapezoidal seat, the trapezoidal seat can drive the arc pressure plate 1 to move, and the arc pressure plate 1 can squeeze the corresponding sealing ring, so that the sealing ring is in close contact with the inner wall of the main body and the outer side of the sleeve;

[0020] 3. When the extrusion rod moves, the extrusion rod can drive the L-shaped rod and the arc-shaped pressure plate 2 to move, and the arc-shaped pressure plate 2 can squeeze the sealing gasket, so that the sealing gasket is in close contact with the inner wall of the main body and the outer side of the sleeve, thereby increasing the sealing of the high-temperature lean oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the high-temperature lean oil pump container-type mechanical seal device proposed by the utility model;

[0022] Figure 2This is a schematic diagram of the main structure of the high-temperature lean oil pump container-type mechanical seal device proposed by the utility model;

[0023] Figure 3 This is a schematic structural diagram of part A of the high-temperature lean oil pump container-type mechanical seal device proposed by the utility model;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the extrusion assembly of the high-temperature lean oil pump container-type mechanical seal device proposed by the utility model.

[0025] In the figure: 1. main body; 2. sleeve; 3. inner pressure plate; 4. outer pressure cover; 5. positioning block; 6. return spring; 7. sealing groove; 8. sealing ring; 9. groove; 10. sealing gasket; 11. arc pressure plate 1; 12. trapezoidal seat; 13. chamber; 14. moving hole; 15. extrusion rod; 16. L-shaped rod; 17. arc pressure plate 2; 18. spring groove; 19. spring seat. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-4 , a high-temperature lean oil pump container-type mechanical seal device comprises a main body 1, a sleeve 2, an inner pressure plate 3, an outer pressure cover 4 and a positioning block 5, the sleeve 2 is arranged on the left side of the main body 1, the inner pressure plate 3 is arranged on the right side of the main body 1, the outer pressure cover 4 is arranged on the right side of the inner pressure plate 3, and the sleeve 2 runs through the inner pressure plate 3 and the outer pressure cover 4, and the outer pressure cover is provided with a positioning block 5 connected to the sleeve 2, a sealing groove 7 is provided on the inner wall and the outer side of the inner pressure plate 3, a sealing ring 8 is installed in the sealing groove 7, and the sealing ring 8 is matched with the corresponding sleeve and the main body 1, a groove 9 with an opening on one side is provided on the inner wall and the outer side of the inner pressure plate 3, a sealing gasket 10 is installed on the inner wall of one side of the groove 9, and the sealing gasket is matched with the corresponding sleeve and the main body 1, when the inner pressure plate 3 is installed to the right side of the main body 1, the sealing ring 8 and the sealing gasket 10 are in contact with the inner wall of the main body 1 and the outer side of the sleeve 2, so as to achieve the purpose of preliminary sealing.

[0028] In this embodiment, a plurality of arc-shaped pressure plates 11 are slidably installed in the sealing groove 7, and the arc-shaped pressure plates 11 are matched with the sealing ring 8. A plurality of chambers 13 are provided on the inner pressure plate 3. A trapezoidal seat 12 is fixedly installed on the side of the arc-shaped pressure plate 11 away from the corresponding sealing ring 8, and the trapezoidal seat 12 extends into the chamber 13. A moving hole 14 is provided on the inner wall of one side of the chamber 13. An extrusion rod 15 is slidably installed in the moving hole 14, and the extrusion rod 15 is matched with the corresponding trapezoidal seat 12. The extrusion rod 15 is squeezed by the main body 1, so that the extrusion rod 15 can move to the right, the extrusion rod 15 can squeeze the trapezoidal seat 12, the trapezoidal seat 12 can drive the arc-shaped pressure plate 11 to move, and the arc-shaped pressure plate 11 can squeeze the corresponding sealing ring 8, so that the sealing ring 8 is in close contact with the inner wall of the main body 1 and the outer side of the sleeve 2, thereby increasing the sealing of the high-temperature lean oil pump.

[0029] In this embodiment, a reset mechanism is provided between the extrusion rod 15 and the moving hole 14, and an extrusion assembly is provided on the extrusion rod 15, and the extrusion assembly is adapted to the sealing gasket 10, and the extrusion assembly includes an L-shaped rod 16 and an arc-shaped pressure plate 17, and the L-shaped rod 16 is fixedly installed on the extrusion rod 15, and an arc-shaped pressure plate 17 is fixedly installed at one end of the L-shaped rod 16, and the arc-shaped pressure plate 17 is adapted to the sealing gasket 10. When the extrusion rod 15 moves, the extrusion rod 15 can drive the L-shaped rod 16 and the arc-shaped pressure plate 17 to move, and the arc-shaped pressure plate 17 can squeeze the sealing gasket 10, so that the sealing gasket 10 is in close contact with the inner wall of the main body 1 and the outer side of the sleeve 2, thereby increasing the sealing of the high-temperature lean oil pump.

[0030] In this embodiment, the reset mechanism includes a spring groove 18, a spring seat 19 and a reset spring 6. The spring groove 18 is opened on the top and bottom inner walls of the movable hole 14. The spring seat 19 is slidably installed in the spring groove 18, and the spring seat 19 is fixedly connected to the extrusion rod 15. A reset spring 6 is fixedly installed between the spring seat 19 and the spring groove 18. The number of extrusion rods 15 is set to six to ten, and the six to ten extrusion rods 15 are arranged in a ring shape with equal spacing. By providing the reset spring 6, the reset spring 6 can push the extrusion rod 15 to reset.

[0031] In the utility model, when the inner pressure plate 3 is installed to the right side of the main body 1, the sealing ring 8 and the sealing gasket 10 are in contact with the inner wall of the main body 1 and the outer side of the sleeve 2, so as to achieve the purpose of preliminary sealing. When the inner pressure plate 3 is in close contact with the main body 1, the extrusion rod 15 is squeezed by the main body 1, so that the extrusion rod 15 can move to the right, and the extrusion rod 15 can squeeze the trapezoidal seat 12, and the trapezoidal seat 12 can drive the arc pressure plate 11 to move, and the arc pressure plate 11 can squeeze the corresponding sealing ring 8, so that the sealing ring 8 is in close contact with the inner wall of the main body 1 and the outer side of the sleeve 2. When the extrusion rod 15 moves, the extrusion rod 15 can drive the L-shaped rod 16 and the arc pressure plate 2 17 to move, and the arc pressure plate 2 17 can squeeze the sealing gasket 10, so that the sealing gasket 10 is in close contact with the inner wall of the main body 1 and the outer side of the sleeve 2, thereby increasing the sealing of the high-temperature lean oil pump.

[0032] The above is a detailed introduction to the high-temperature lean oil pump container-type mechanical seal device provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. High temperature lean oil pump containerized mechanical seal device, characterized in that: The invention comprises a main body (1), a shaft sleeve (2), an inner pressure plate (3), an outer pressure cover (4) and a positioning block (5), wherein the shaft sleeve (2) is arranged on the left side of the main body (1), the inner pressure plate (3) is arranged on the right side of the main body (1), the outer pressure cover (4) is arranged on the right side of the inner pressure plate (3), and the shaft sleeve (2) passes through the inner pressure plate (3) and the outer pressure cover (4), and the outer pressure cover (4) is provided with a positioning block (5) connected to the shaft sleeve (2); The inner wall and the outer side of the inner pressure plate (3) are both provided with sealing grooves (7), a sealing ring (8) is installed in the sealing groove (7), and the sealing ring (8) is matched with the corresponding shaft sleeve (2) and the main body (1); A groove (9) with an opening on one side is provided on the inner wall and the outer side of the inner pressure plate (3), a sealing gasket (10) is installed on the inner wall of one side of the groove (9), and the sealing gasket (10) is compatible with the corresponding shaft sleeve (2) and the main body (1).

2. The high-temperature lean oil pump container-type mechanical seal device according to claim 1, characterized in that: A plurality of arc-shaped pressure plates (11) are slidably mounted in the sealing groove (7), and the arc-shaped pressure plates (11) are matched with the sealing ring (8).

3. The high-temperature lean oil pump container-type mechanical seal device according to claim 2, characterized in that: The inner pressure plate (3) is provided with a plurality of chambers (13), and a trapezoidal seat (12) is fixedly mounted on one side of the arc-shaped pressure plate (11) away from the corresponding sealing ring (8), and the trapezoidal seat (12) extends into the chamber (13).

4. The high-temperature lean oil pump container-type mechanical seal device according to claim 3, characterized in that: A moving hole (14) is provided on an inner wall of one side of the chamber (13), and an extrusion rod (15) is slidably installed in the moving hole (14), and the extrusion rod (15) is adapted to the corresponding trapezoidal seat (12).

5. The high-temperature lean oil pump container-type mechanical seal device according to claim 4, characterized in that: A reset mechanism is provided between the extrusion rod (15) and the moving hole (14); an extrusion assembly is provided on the extrusion rod (15), and the extrusion assembly is matched with the sealing pad (10).

6. The high-temperature lean oil pump container-type mechanical seal device according to claim 5, characterized in that: The extrusion assembly comprises an L-shaped rod (16) and a second arc-shaped pressure plate (17), wherein the L-shaped rod (16) is fixedly mounted on the extrusion rod (15), and a second arc-shaped pressure plate (17) is fixedly mounted on one end of the L-shaped rod (16), and the second arc-shaped pressure plate (17) is adapted to the sealing gasket (10).

7. The high-temperature lean oil pump container-type mechanical seal device according to claim 5, characterized in that: The reset mechanism comprises a spring groove (18), a spring seat (19) and a reset spring (6); the spring groove (18) is provided on the top and bottom inner walls of the moving hole (14); the spring seat (19) is slidably mounted in the spring groove (18); the spring seat (19) is fixedly connected to the extrusion rod (15); and a reset spring (6) is fixedly mounted between the spring seat (19) and the spring groove (18).

8. The high-temperature lean oil pump container-type mechanical seal device according to claim 4, characterized in that: The number of the extrusion rods (15) is set to six to ten, and the six to ten extrusion rods (15) are arranged in a ring shape with equal intervals.

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