阅读说明：本技术 一种喷水推进装置用弹簧旋转式泵密封装置 (Spring rotary pump sealing device for water jet propulsion unit ) 是由 王伟 闻兰 闻永华 于 2019-11-21 设计创作，主要内容包括：本发明公开了一种喷水推进装置用弹簧旋转式泵密封装置,包括：轴、左压盖、右压盖、气胎密封机构、油封机构,弹簧座、弹簧、静环、动环座及动环,所述气胎密封机构包括：气密封圈及压环,所述油封机构包括：驱动环、与左压盖固定连接的挡板及设置于驱动环与挡板之间的油封,所述静环通过销及销套安装于右压盖上,所述右压盖的一侧设有轴向顶住静环的压板,所述压板与右压盖之间通过若干个第二固定件连接,所述动环设置于动环座内,所述弹簧座与轴固定连接,所述弹簧座的一侧设有若干个弹簧导销,所述动环座的一侧设有若干个弹簧收容槽,所述弹簧套设于弹簧导销上并收容于动环座的弹簧收容槽内,从而大大提高了泵密封装置的寿命。(The invention discloses a spring rotary pump sealing device for a water jet propulsion device, which comprises: axle, left gland, right gland, pneumatic tyre sealing mechanism, oil blanket mechanism, spring holder, spring, quiet ring, rotating ring seat and rotating ring, pneumatic tyre sealing mechanism includes: air seal circle and clamping ring, oil blanket mechanism includes: the pump sealing device comprises a driving ring, a baffle fixedly connected with a left gland and an oil seal arranged between the driving ring and the baffle, wherein a static ring is arranged on a right gland through a pin and a pin sleeve, one side of the right gland is provided with a pressing plate which axially abuts against the static ring, the pressing plate is connected with the right gland through a plurality of second fixing pieces, a movable ring is arranged in a movable ring seat, a spring seat is fixedly connected with a shaft, one side of the spring seat is provided with a plurality of spring guide pins, one side of the movable ring seat is provided with a plurality of spring accommodating grooves, and the spring sleeve is arranged on the spring guide pins and is accommodated in the spring accommodating grooves of the movable ring seat, so that the service life of the pump sealing device is greatly prolonged.)

1. A spring rotary pump seal for a water jet propulsion unit comprising: axle, left gland, right gland, pneumatic tyre sealing mechanism, oil blanket mechanism, spring holder, a plurality of spring, quiet ring, rotating ring seat and rotating ring, be connected through the first mounting of a plurality of between left side gland and the right gland, pneumatic tyre sealing mechanism includes: air seal circle and clamping ring, oil blanket mechanism includes: the spring seat comprises a driving ring fixedly connected with a shaft, a baffle fixedly connected with a left gland and an oil seal arranged between the driving ring and the baffle, wherein a static ring is arranged on a right gland through a plurality of pins and a pin bush, one side of the right gland is provided with a pressing plate which axially supports the static ring, the pressing plate is connected with the right gland through a plurality of second fixing pieces, a movable ring is arranged in the movable ring seat, the spring seat is fixedly connected with the shaft, one side of the spring seat is provided with a plurality of spring guide pins, one side of the movable ring seat is provided with a plurality of spring accommodating grooves, the spring sleeves are arranged on the spring guide pins and are accommodated in the spring accommodating grooves of the movable ring seat, one end of the spring is abutted against the movable ring seat, and the other end of the spring is abutted against the spring seat.

2. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: the pneumatic tire sealing mechanism is arranged in the left gland, the pneumatic sealing ring is wrapped on the outer side of the compression ring, a first inflation channel is arranged in the compression ring, and a second inflation channel communicated with the first inflation channel is arranged in the left gland.

3. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: the spring seat is connected with the shaft through a first clamping sleeve and a first set screw, and the driving ring is connected with the shaft through a second clamping sleeve and a second set screw.

4. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: be equipped with first spring holder O type circle between spring holder and the axle, be equipped with second spring holder O type circle between spring holder and the rotating ring seat, be equipped with first quiet ring O type circle between quiet ring and the right gland, be equipped with the quiet ring O type circle of second between quiet ring and the clamp plate, be equipped with right gland O type circle between the baffle of right gland and oil blanket mechanism.

5. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: the dynamic ring is made of pressureless sintered silicon carbide materials, the hardness of the dynamic ring is HRA95, the static ring is made of reaction sintered silicon carbide materials, and the hardness of the static ring is HRA 90.

6. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: and a washing liquid channel which can reach the friction surface of the static ring and the moving ring is arranged in the right gland.

7. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: the pin bushing is made of a flexible material.

8. The spring rotary pump seal assembly for a water jet propulsion unit of claim 1 further comprising: and the right gland is provided with an adjusting screw and a nut which are matched with the left gland.

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of mechanical sealing, in particular to a spring rotary pump sealing device for a water jet propulsion device.

[ background of the invention ]

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, water jet propulsion units, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world.

[ summary of the invention ]

In order to solve the technical problems, the invention aims to provide a spring rotary pump sealing device for a water jet propulsion device, which has a simple structure and is convenient to install.

The technical scheme adopted by the invention is as follows: a spring rotary pump seal for a water jet propulsion unit comprising: axle, left gland, right gland, pneumatic tyre sealing mechanism, oil blanket mechanism, spring holder, a plurality of spring, quiet ring, rotating ring seat and rotating ring, be connected through the first mounting of a plurality of between left side gland and the right gland, pneumatic tyre sealing mechanism includes: air seal circle and clamping ring, oil blanket mechanism includes: the spring seat comprises a driving ring fixedly connected with a shaft, a baffle fixedly connected with a left gland and an oil seal arranged between the driving ring and the baffle, wherein a static ring is arranged on a right gland through a plurality of pins and a pin bush, one side of the right gland is provided with a pressing plate which axially supports the static ring, the pressing plate is connected with the right gland through a plurality of second fixing pieces, a movable ring is arranged in the movable ring seat, the spring seat is fixedly connected with the shaft, one side of the spring seat is provided with a plurality of spring guide pins, one side of the movable ring seat is provided with a plurality of spring accommodating grooves, the spring sleeves are arranged on the spring guide pins and are accommodated in the spring accommodating grooves of the movable ring seat, one end of the spring is abutted against the movable ring seat, and the other end of the spring is abutted against the spring seat.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: the pneumatic tire sealing mechanism is arranged in the left gland, the pneumatic sealing ring is wrapped on the outer side of the compression ring, a first inflation channel is arranged in the compression ring, and a second inflation channel communicated with the first inflation channel is arranged in the left gland.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: the spring seat is connected with the shaft through a first clamping sleeve and a first set screw, and the driving ring is connected with the shaft through a second clamping sleeve and a second set screw.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: be equipped with first spring holder O type circle between spring holder and the axle, be equipped with second spring holder O type circle between spring holder and the rotating ring seat, be equipped with first quiet ring O type circle between quiet ring and the right gland, be equipped with the quiet ring O type circle of second between quiet ring and the clamp plate, be equipped with right gland O type circle between the baffle of right gland and oil blanket mechanism.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: the dynamic ring is made of pressureless sintered silicon carbide materials, the hardness of the dynamic ring is HRA95, the static ring is made of reaction sintered silicon carbide materials, and the hardness of the static ring is HRA 90.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: and a washing liquid channel which can reach the friction surface of the static ring and the moving ring is arranged in the right gland.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: the pin bushing is made of a flexible material.

Preferably, the spring rotary pump sealing device for the water jet propulsion device in the invention is further provided with: and the right gland is provided with an adjusting screw and a nut which are matched with the left gland.

Compared with the prior art, the invention has the following beneficial effects:

1. the movable ring assembly adopts a multi-spring rotary compensation element structure, the multi-spring design can meet the requirement that a large-shaft-diameter seal bears uniform compression load, and the seal has larger axial compensation capacity by matching with a guide pin.

2. The static ring has the function of transmitting torque by the cylindrical pin, and the flexible pin sleeve is assembled on the cylindrical pin to play a role of buffering, so that the phenomenon that the sealing ring is cracked due to rigid contact between the pin and the hole caused by overlarge torque generated when a host is just started can be greatly avoided.

3. The driving ring and the spring seat of the invention are all provided with a jacket type transmission device between the shaft, the transmission structure is stable and reliable, and the generation of pits or scratches and the like caused by the direct contact of the screw and the shaft can be avoided.

4. The right gland is provided with the washing liquid channel which can reach the friction surface of the static ring and the moving ring, so that the friction surface can be washed and cooled, and the service life is prolonged.

5. According to the invention, the air tire sealing mechanism is arranged on the seawater side, so that when the mechanical seal fails or is maintained, the air tire seal can be filled with air, the air tire and the shaft are tightly held, the seawater is isolated outside the cabin, the seawater is prevented from flowing into the cabin during maintenance, and the mechanical seal is convenient to disassemble and maintain.

[ description of the drawings ]

Fig. 1 is a schematic structural view of a spring rotary pump sealing device for a water jet propulsion system according to the present invention.

In fig. 1: 1. shaft, 2, left gland, 21, second inflation channel, 3, right gland, 30, adjusting screw, 31, nut, 32, flushing liquid channel, 33, pressure plate, 34, second fixing piece, 35, right gland O-ring, 4, air tire sealing mechanism, 40, air sealing ring, 41, pressure ring, 410, first inflation channel, 5, oil sealing mechanism, 50, driving ring, 51, baffle, 52, oil seal, 53, second clamping sleeve, 54, second set screw, 6, spring seat, 60, spring, 61, first clamping sleeve, 62, first set screw, 63, spring guide pin, 64, first spring seat O-ring, 65, second spring seat O-ring, 7, stationary ring, 70, pin, 71, pin sleeve, 72, first stationary ring O-ring, 73, second stationary ring O-ring, 8, movable ring seat, 80, movable ring, 81, spring receiving groove, 9, cabin.

[ detailed description ] embodiments

The spring rotary pump sealing device for a water jet propulsion system according to the invention is described in further detail below by means of specific embodiments.

Referring to fig. 1, a spring rotary pump sealing device for a water jet propulsion device includes: the pneumatic tire sealing device comprises a shaft 1, a left gland 2, a right gland 3, a pneumatic tire sealing mechanism 4, an oil sealing mechanism 5, a spring seat 6, sixteen springs 60, a static ring 7, a movable ring seat 8 and a movable ring 80. The dynamic ring 80 is made of pressureless sintered silicon carbide materials, the hardness of the dynamic ring 80 is HRA95, the static ring 7 is made of reaction sintered silicon carbide materials, and the hardness of the static ring 7 is HRA 90. Therefore, the two friction pairs have certain hardness difference, and the abrasion performance of the sealing friction pair is improved. And the right gland 3 is provided with an adjusting screw 30 and a nut 31 which are matched with the left gland 2, so that the parallelism of the left gland 2 and the installation surface of the cabin 9 can be adjusted.

The left and right glands 2 and 3 are connected to each other by eight first fixing members (not shown), which are screws in the present embodiment, and the right gland 3 is provided with a flushing fluid passage 32 that reaches the friction surface of the stationary ring 7 and the moving ring 80, so that the friction surface can be flushed and cooled, thereby increasing the service life thereof.

The pneumatic tire sealing mechanism 4 includes: air seal ring 40 and clamping ring 41, air child sealing mechanism 4 sets up in left gland 2, air seal ring 40 cladding is in the outside of clamping ring 41, be equipped with first inflation channel 410 in clamping ring 41, be equipped with the second inflation channel 21 that link up mutually with first inflation channel 410 in the left side gland 2. The air sealing ring 40 can be inflated through the first inflation channel and the 410 second inflation channel 21, so that the air sealing ring 40 is tightly held with the shaft 1, seawater is isolated outside the cabin, the seawater is prevented from flowing into the cabin during maintenance, and the mechanical seal is convenient to disassemble and maintain.

The oil seal mechanism 5 includes: the driving ring 50 is fixedly connected with the shaft 1, the baffle plate 51 is fixedly connected with the left gland 2, and the oil seal 52 is arranged between the driving ring 50 and the baffle plate 51, the static ring 7 is arranged on the right gland 3 through two pins 70 and a pin sleeve 71, the pin sleeve 71 is made of flexible materials, so that the buffering effect can be achieved, and the phenomenon that the sealing ring is cracked due to hard contact between the pins and holes caused by overlarge torque generated when a main machine is just started can be greatly avoided. One side of right side gland 3 is equipped with the clamp plate 33 that the axial withstood quiet ring 7, be connected through four second mounting 34 between clamp plate 33 and the right side gland 3, in this embodiment, second mounting 34 is the screw, the rotating ring 80 is inlayed in rotating ring seat 8, spring holder 6 and axle 1 fixed connection, in this embodiment, be connected through first clamp sleeve 61 and first holding screw 62 between spring holder 6 and the axle 1, it connects through second clamp sleeve 53 and second holding screw 54 to press from both sides between drive ring 50 and the axle 1. The transmission structure is stable and reliable, and can avoid pits or scratches and the like caused by direct contact of the screw and the shaft 1.

Sixteen spring guide pins 63 are arranged on one side of the spring seat 6, sixteen spring accommodating grooves 81 are arranged on one side of the movable ring seat 8, the spring 60 is sleeved on the spring guide pins 63 and accommodated in the spring accommodating grooves 81 of the movable ring seat 8, one end of the spring 60 abuts against the movable ring seat 8, and the other end of the spring 60 abuts against the spring seat 6, so that the movable ring seat 8 can move axially relative to the spring seat 6.

Be equipped with first spring holder O type circle 64 between spring holder 6 and the axle 1, be equipped with second spring holder O type circle 65 between spring holder 6 and the rotating ring seat 8, be equipped with first quiet ring O type circle 72 between quiet ring 7 and the right gland 3, be equipped with second quiet ring O type circle 73 between quiet ring 7 and the clamp plate 33, be equipped with right gland O type circle 35 between the baffle 51 of right gland 3 and oil sealing mechanism 5.

In conclusion, the movable ring assembly in the invention adopts a multi-spring rotary compensation element structure, the design of multiple springs can meet the requirement that a large-shaft-diameter seal bears uniform compression load, the seal has larger axial compensation capability by matching with a guide pin, in addition, the spring in the invention rotates along with the shaft, the ring surface is better attached under the condition of low speed, in addition, when the installation has deviation, the movable ring can be automatically adjusted, the failure and the service life influence of the seal can not be caused by the deviation of verticality and the like, in addition, the stationary ring in the invention adopts the function of a cylindrical pin for transmitting torque, and a flexible pin sleeve is assembled on the cylindrical pin for playing a buffering role, so that the sealing ring can be greatly prevented from being cracked due to hard contact between the pin and a hole caused by overlarge torque generated when a host is just started.

The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.