A dual-drive container-type mechanical seal device

Abstract

The present invention relates to the technical field of mechanical sealing devices, and in particular to a dual-drive container-type mechanical sealing device, which solves the shortcomings of poor sealing effect and low efficiency in the prior art. The device comprises a mounting seat and a main shaft, wherein a mounting groove is provided inside the mounting seat, and a static ring is fixedly connected inside the mounting groove. On the one hand, when the main shaft is in motion, the main shaft will rotate with the external dynamic ring and the connecting part. Since one side of the connecting part is tapered, when the internal oil overflows to the tapered groove, centripetal force is generated under high-speed rotation, so that the oil rotates inside the tapered groove, and the oil can be effectively prevented from overflowing to the outside under the cooperation with the oil baffle. On the other hand, the design of the connecting part and the oil baffle lengthens the oil overflow stroke, and the inclined climbing of the tapered groove exerts a certain resistance. When the main shaft is in a stationary state, the internal oil absorption pad absorbs and stores the oil, which greatly improves the sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical sealing devices, and in particular to a dual-drive containerized mechanical sealing device. Background Art

[0002] Mechanical seal refers to a device that prevents fluid leakage by at least one pair of end faces perpendicular to the axis of rotation, which are kept in close contact and slide relative to each other under the action of fluid pressure and the elastic force of the compensation mechanism and the cooperation of the auxiliary seal. The mechanical seal of the elastic loading mechanism and the auxiliary seal is a metal bellows, which we call a metal bellows seal. In light seals, rubber bellows are also used as auxiliary seals. The elastic force of rubber bellows is limited, and generally a spring is needed to meet the loading elastic force.

[0003] At present, the sealing effect of mechanical sealing devices on the market is poor, and when sealing the drive shaft, the sealing devices need to be installed one by one, which is inefficient. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of poor sealing effect and low efficiency in the prior art, and to propose a dual-drive container-type mechanical sealing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A dual-drive container-type mechanical seal device, comprising a mounting seat and a main shaft, wherein a mounting groove is provided inside the mounting seat, a stationary ring is fixedly connected inside the mounting groove, and a dynamic ring is rotatably arranged inside the mounting groove, the main shaft is fixedly connected to the dynamic ring, and the main shaft is sleeved inside the stationary ring;

[0007] An annular connecting portion is fixedly provided on the outer side of the dynamic ring, an oil baffle portion is fixedly provided on the top of the connecting portion, and a tapered groove is formed between the connecting portion and the static ring, a plurality of oil storage grooves distributed in an array are provided on the inner wall of the tapered groove, an oil absorption pad is placed inside the oil storage groove, and a contoured groove matching the connecting portion and the oil baffle portion is provided on the inner wall of the mounting groove.

[0008] Preferably, the number of the mounting seats is set to two, and the first support plate, the second support block, the guide block and the adjustment block are respectively fixed to the two mounting seats by screws, a sleeve rod is welded between the two first support plates, the sleeve rod is sleeved inside the guide block, a screw rod is rotatably installed between the two adjustment blocks, the screw rod is threadedly connected to the adjustment block, and a handle is welded to the middle part of the screw rod.

[0009] Preferably, the main shaft passes through the interior of the mounting groove.

[0010] Preferably, the oil storage tank is in a ring shape, and the oil absorption pad is made of resin.

[0011] Preferably, the dynamic ring, the connecting portion and the oil retaining portion are an integrally formed structure.

[0012] The beneficial effects of the present invention are:

[0013] 1. In the present invention, by setting structures such as the moving ring, the connecting part, the oil baffle part, the oil storage tank and the oil absorption pad, on the one hand, when the main shaft is in motion, the main shaft will rotate with the external moving ring and the connecting part. Since one side of the connecting part is tapered, when the internal oil overflows to the tapered groove, centripetal force is generated under high-speed rotation, so that the oil rotates inside the tapered groove, and the oil baffle part cooperates to effectively prevent the oil from overflowing to the outside. On the other hand, the connection part and the oil baffle part are designed to lengthen the oil overflow stroke, and the inclined climbing of the tapered groove exerts a certain resistance. When the main shaft is in a stationary state, the internal oil absorption pad absorbs and stores the oil, which greatly improves the sealing performance.

[0014] 2. In the present invention, by setting up the first support plate, the second support block, the sleeve rod and the screw rod and other structures, for the dual drive shaft, personnel can assemble the sealing device in advance, and then integrate and install it on the equipment. The distance between the two mounting seats can be adjusted by using the screw shaft. Therefore, it can be applied to a variety of flat equipment and can complete the installation of two mounting seats at the same time. The installation is convenient, fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A front cross-sectional view of the mounting base provided by the present invention;

[0016] Figure 2 A front cross-sectional view of a dual-drive container-type mechanical seal device proposed by the present invention;

[0017] Figure 3 This is an enlarged view of the double-drive container-type mechanical seal device proposed by the present invention.

[0018] In the figure: 1 mounting seat, 101 contoured ring groove, 100 static ring, 200 dynamic ring, 201 connecting part, 202 oil retaining part, 203 taper groove, 204 oil storage tank, 205 oil absorption pad, 2 main shaft, 3 first support plate, 4 second support block, 5 sleeve rod, 6 screw rod, 7 guide block, 8 adjustment block, 9 handle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-3A dual-drive container-type mechanical seal device comprises a mounting seat 1 and a main shaft 2, wherein a mounting groove is provided inside the mounting seat 1, a stationary ring 100 is fixedly connected inside the mounting groove, and a moving ring 200 is rotatably provided inside the mounting groove, the main shaft 2 is fixedly connected to the moving ring 200, and the main shaft 2 is sleeved inside the stationary ring 100; an annular connecting portion 201 is fixedly provided on the outer side of the moving ring 200, an oil retaining portion 202 is fixedly provided on the top of the connecting portion 201, and a tapered groove 203 is formed between the connecting portion 201 and the stationary ring 100, a plurality of array-distributed oil storage grooves 204 are provided on the inner wall of the tapered groove 203, an oil absorption pad 205 is placed inside the oil storage groove 204, and a contoured groove matching the connecting portion 201 and the oil retaining portion 202 is provided on the inner wall of the mounting groove.

[0021] Among them, through the arrangement of the structures such as the moving ring 200, the connecting part 201, the oil baffle part 202, the oil storage tank 204 and the oil absorption pad 205, on the one hand, when the main shaft 2 is in motion, the main shaft 2 will rotate with the external moving ring 200 and the connecting part 201. Since one side of the connecting part 201 is tapered, when the internal oil overflows to the tapered groove 203, centripetal force is generated under high-speed rotation, so that the oil rotates inside the tapered groove 203. Under the cooperation with the oil baffle part 202, the oil can be effectively prevented from overflowing to the outside. On the other hand, the connection part 201 and the oil baffle part 202 are designed The oil overflow stroke is lengthened, and the inclined climbing of the tapered groove 203 applies a certain resistance. When the main shaft 2 is in a stationary state, the internal oil absorption pad 205 absorbs and stores the oil, which greatly improves the sealing performance. Through the arrangement of the first support plate 3, the second support block 4, the sleeve rod 5 and the screw 6 and other structures, for the dual drive shaft, personnel can assemble the sealing device in advance, and then integrate and install it on the equipment. The spacing between the two mounting seats 1 can be adjusted by the rotating shaft of the screw 6. Therefore, it can be applied to a variety of flat equipment and can complete the installation of two mounting seats 1 at the same time. The installation is convenient, fast and efficient.

[0022] In this embodiment, the number of mounting seats 1 is set to two, and the first support plate 3, the second support block 4, the guide block 7 and the adjustment block 8 are fixed to the two mounting seats 1 by screws respectively, a sleeve rod 5 is welded between the two first support plates 3, and the sleeve rod 5 is sleeved inside the guide block 7. A screw rod 6 is rotatably installed between the two adjustment blocks 8, and the screw rod 6 is threadedly connected to the adjustment block 8, and a handle 9 is welded to the middle part of the screw rod 6. The distance between the two mounting seats 1 can be adjusted by rotating the handle, and the application range is wide.

[0023] In this embodiment, the main shaft 2 passes through the interior of the installation groove.

[0024] In this embodiment, the oil storage tank 204 is in a ring shape, and the oil absorption pad 205 is made of resin, so as to have a strong oil absorption effect.

[0025] In this embodiment, the dynamic ring 200, the connecting portion 201 and the oil retaining portion 202 are an integrally formed structure.

[0026] The specific implementation process of the present invention is as follows: during installation, first assemble the two mounting seats 1, then fix one of the mounting seats 1 according to the spacing of the dual drive shafts, and turn the handle 9 to adjust the spacing between the two mounting seats 1. After the adjustment is completed, the two mounting seats 1 can be assembled on the equipment at the same time;

[0027] Furthermore, when the main shaft 2 is in a rotating state, it rotates with the external moving ring 200 and the connecting part 201 at the same time. Since one side of the connecting part 201 is tapered, when the internal oil overflows to the tapered groove 203, centripetal force is generated under high-speed rotation, causing the oil to rotate inside the tapered groove 203. In cooperation with the oil baffle 202, the oil can be effectively prevented from overflowing to the outside. On the other hand, the design of the connecting part 201 and the oil baffle 202 lengthens the oil overflow stroke, and the inclined climbing of the tapered groove 203 exerts a certain resistance to prevent oil overflow to the greatest extent. When the main shaft 2 is in a stationary state, the oil will slowly flow downward along the inclined surface of the tapered groove 203, and finally the oil will be absorbed and stored by the internal oil absorption pad 205, and the sealing effect is good.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dual-drive cartridge mechanical seal device, comprising a mounting seat (1) and a main shaft (2), characterized in that: The mounting seat (1) has a mounting groove formed inside, a stationary ring (100) is fixedly connected inside the mounting groove, and a dynamic ring (200) is rotatably arranged inside the mounting groove, the main shaft (2) is fixedly connected to the dynamic ring (200), and the main shaft (2) is sleeved inside the stationary ring (100); An annular connecting portion (201) is fixedly provided on the outer side of the moving ring (200), an oil baffle portion (202) is fixedly provided on the top of the connecting portion (201), a tapered groove (203) is formed between the connecting portion (201) and the stationary ring (100), and the tapered groove (203) is located on the connecting portion (201), a plurality of array-distributed oil storage grooves (204) are provided on the inner wall of the tapered groove (203), an oil absorbing pad (205) is placed inside the oil storage groove (204), and a contoured groove matching the connecting portion (201) and the oil baffle portion (202) is provided on the inner wall of the mounting groove; The number of the mounting seats (1) is set to two, and the first support plate (3), the second support block (4), the guide block (7) and the adjustment block (8) are fixed to the two mounting seats (1) by screws respectively, a sleeve rod (5) is welded between the two first support plates (3), the sleeve rod (5) is sleeved inside the guide block (7), a screw rod (6) is rotatably installed between the two adjustment blocks (8), the screw rod (6) is threadedly connected to the adjustment block (8), and a handle (9) is welded to the middle part of the screw rod (6); For the dual drive shafts, two sealing devices are pre-assembled through a first support plate (3), a second support block (4), a sleeve rod (5), a screw rod (6), a guide block (7) and an adjustment block (8), and then integrated and installed on the equipment to achieve the integration of the dual drive shafts.

2. A dual-drive cartridge mechanical seal device according to claim 1, characterized in that: The main shaft (2) passes through the interior of the mounting groove.

3. A dual-drive cartridge mechanical seal device according to claim 1, characterized in that: The oil storage tank (204) is in a ring shape, and the oil absorption pad (205) is made of resin.

4. A dual-drive cartridge mechanical seal device according to claim 1, characterized in that: The dynamic ring (200), the connecting portion (201) and the oil retaining portion (202) are an integrally formed structure.

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