CN212155793U

CN212155793U - Mechanical sealing device suitable for multi-working-condition vacuum equipment

Info

Publication number: CN212155793U
Application number: CN202020325259.4U
Authority: CN
Inventors: 明兴平; 杨宗迪; 吴波; 张霞
Original assignee: Zigong Chuanmi Environmental Protection Technology Co ltd
Current assignee: Zigong Chuanmi Environmental Protection Technology Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-15
Anticipated expiration: 2030-03-16

Abstract

The utility model relates to a mechanical seal technical field, concretely relates to adapt to multiplex condition vacuum apparatus mechanical seal device, establish including transmission shaft and cover epaxial axle sleeve and bearing of transmission, the bearing sets up the one end of axle sleeve, the cover is equipped with the seal receptacle on the axle sleeve, the axle sleeve with be equipped with first sealed chamber between the seal receptacle, it is equipped with the manger plate subassembly still to overlap on the axle sleeve, the manger plate subassembly sets up first sealed chamber with between the bearing. The utility model relates to an adapt to multiplex condition vacuum apparatus mechanical seal device sets up the breakwater through setting up on the axle sleeve, changes the flow direction of the coolant liquid that leaks along the axle sleeve outer wall, makes on the coolant liquid can not reach the bearing along the axle sleeve outer wall, has played the guard action to the bearing, ensures mechanical seal's normal operating.

Description

Mechanical sealing device suitable for multi-working-condition vacuum equipment

Technical Field

The utility model relates to a mechanical seal technical field, especially an adaptation multiplex condition vacuum apparatus mechanical seal device.

Background

At present, single-end-face, multi-spring, balanced, cartridge mechanical sealing devices and axial double-end-face, multi-spring, unbalanced, cartridge mechanical sealing devices are widely used in the industries of food, textile, machinery, electronics, power generation, petroleum, chemical industry, coal, metallurgy, cement and the like, and two mechanical sealing devices generally adopt framework oil seal sealing lubricating liquid to cool a sealing face or adopt flowing cooling liquid introduced into a sealing cavity to cool the sealing face.

However, influenced by the high-speed rotation of the equipment, the framework oil seal is easy to wear, a gap is generated between the shaft sleeve and the framework oil seal, and the leakage of lubricating liquid or cooling liquid along the rotating shaft occurs, so that the service life of the sealing surface of the equipment is reduced, the sealing failure of the equipment is caused, the leaked cooling liquid flows to the bearing on the rotating shaft along the rotating shaft easily, the normal use of the bearing is influenced, the bearing is damaged, the integral shutdown of the equipment is caused, the safety production of the whole production line is influenced in serious conditions, and the great economic loss is caused.

In summary, there is a need for a technical solution to solve the technical problem that the conventional mechanical sealing device is influenced by high-speed rotation of equipment, and liquid used for cooling a sealing surface is easy to leak along a rotating shaft, so that normal use of a bearing on the shaft is influenced, and the equipment is stopped, thereby causing great economic loss.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: aiming at the technical problems that in the prior art, a mechanical sealing device is influenced by high-speed rotation of equipment, liquid for cooling a sealing surface is easy to leak along a rotating shaft, normal use of a bearing on a shaft is influenced, equipment is stopped, and great economic loss is caused, the mechanical sealing device is suitable for multi-working-condition vacuum equipment.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides an adapt to multiplex condition vacuum apparatus mechanical seal device, includes transmission shaft and cover and establishes epaxial axle sleeve and bearing of transmission, the bearing sets up the one end of axle sleeve, the cover is equipped with the seal receptacle on the axle sleeve, the axle sleeve with be equipped with first sealed chamber between the seal receptacle, still the cover is equipped with the manger plate subassembly on the axle sleeve, the manger plate subassembly sets up first sealed chamber with between the bearing.

The utility model relates to an adapt to multiplex condition vacuum apparatus mechanical seal device, the transmission shaft is used for driving the work component motion in the equipment, the seal receptacle is used for with the equipment port is fixed, the sound cooperation is sealed to equipment inner chamber formation between seal receptacle and the axle sleeve, and set up first sealed chamber between seal receptacle and axle sleeve, let in the cooling liquid in first sealed intracavity and realize the cooling of each friction surface of mechanical seal, and set up the manger plate subassembly on the axle sleeve, first sealed intracavity cooling liquid meets the back of hindering of manger plate subassembly through the friction surface after leaking, can drop along direction of gravity, make the cooling liquid can't arrive on the bearing along the axle sleeve outer wall, play the guard action to the bearing, ensure mechanical seal's normal operating.

As the utility model discloses a preferred scheme, the seal receptacle with be provided with two seal assembly between the axle sleeve, every seal assembly one end is connected the axle sleeve, the other end is connected the seal receptacle, axle sleeve, seal receptacle and two seal assembly encloses to close and forms first sealed chamber.

As the utility model discloses an optimal scheme, seal assembly is including moving sealing ring, quiet sealing ring and spring, move the sealing ring with axle sleeve fixed connection, spring one end with the seal receptacle links to each other, the other end with quiet sealing ring is connected, the spring promotes quiet sealing ring with move sealing ring looks butt. Spring one end is installed in spacing recess on the seal receptacle, and the other end and quiet sealing ring fixed connection rotate the in-process at the transmission shaft, and the spring can not rotate along with the transmission shaft, avoids the spring to appear the condition of inefficacy owing to receive too big centrifugal force in equipment high-speed operation, ensures that the spring can provide the compensation for quiet sealing ring to improve mechanical seal's reliability.

As the utility model discloses an optimal scheme still includes the seal, a seal pot head is established on the seal receptacle, another pot head is established on the bearing, make seal, seal receptacle, axle sleeve and bearing enclose to close and form the sealed chamber of second. The sealing bodies are sleeved on the sealing seat and the bearing, and all parts of the mechanical seal are protected through the sealing bodies, so that the service life of the mechanical seal is prolonged.

As the preferred scheme of the utility model, be equipped with on the seal and keep off the ring, keep off the ring setting and be in the bearing with between the first sealed chamber. Because the equipment fortune in-process, the axle sleeve is in high-speed rotating state, and the condition that splashes can appear in the coolant liquid of leaking on the axle sleeve sets up and keeps off the ring between bearing and first seal chamber, blocks the coolant liquid that splashes.

As the utility model discloses an optimal scheme, be equipped with on the seal and let out the leakage liquid export, let out leakage liquid export intercommunication the second sealed chamber. Through set up the leakage liquid export on the sealing, discharge the coolant liquid that leaks along the axle sleeve outside the second seal chamber, avoid the coolant liquid of leaking to gather in the second seal chamber.

As the preferred scheme of the utility model, be equipped with a plurality of fluid passage on the seal, every fluid passage runs through the seal receptacle, and with first seal chamber intercommunication. Through setting up a plurality of fluid passage can be convenient for let in the coolant liquid to first sealed intracavity simultaneously from a plurality of directions, make refrigerated effect better.

As the utility model discloses a preferred scheme, a plurality of fluid passage follows seal circumference is evenly arranged. The cooling liquid is uniformly introduced into the first sealing cavity, so that the cooling is more sufficient and rapid.

As the utility model discloses a preferred scheme, the manger plate subassembly includes baffle and circlip, the baffle with circlip follows the range upon range of setting of length direction of axle sleeve. The elastic retainer ring can close the gap between the baffle and the shaft sleeve, and the possibility of leakage of the cooling liquid passing through the baffle is reduced.

As the utility model discloses a preferred scheme, be equipped with annular groove on the axle sleeve, circlip sets up in the annular groove.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model relates to a adapt to multiplex condition vacuum apparatus mechanical seal device, through set up the breakwater on the axle sleeve, change the flow direction of the coolant liquid that leaks along the axle sleeve outer wall, make the coolant liquid can't reach the bearing along the axle sleeve outer wall, play the guard action to the bearing, ensure the normal operating of mechanical seal;

2. the static seal assembly consists of a spring and a static seal ring, and the static seal ring assembly is arranged on the seal seat and cannot rotate along with the transmission shaft, so that the condition that the spring fails in high-speed operation of equipment is avoided, the spring can be ensured to provide compensation for the static seal ring, and the reliability of mechanical seal is improved;

3. an elastic sealing ring is arranged on one side of the water baffle, so that the gap between the water baffle shaft sleeves is prevented from being closed, and the possibility that cooling liquid passes through the baffle and leaks is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a mechanical sealing device adapted to a multi-operating-condition vacuum apparatus of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view of the water deflector assembly of FIG. 2;

FIG. 4 is an enlarged view of the seal assembly of FIG. 2;

the labels in the figure are: 1-a transmission shaft, 2-a shaft sleeve, 21-a first seal cavity, 22-a seal assembly, 221-a movable seal ring, 222-a static seal ring, 223-a spring, 23-an annular groove, 3-a bearing, 4-a seal seat, 41-a limiting groove, 5-a water retaining assembly, 51-a baffle, 52-an elastic retainer ring, 6-a seal body, 61-a second seal cavity, 62-a baffle ring, 63-a leakage liquid outlet, 64-a fluid channel, 641-a first channel and 642-a second channel.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1-4, the utility model relates to an adaptation multiplex condition vacuum apparatus mechanical seal device, establish including transmission shaft 1 and cover 1 epaxial axle sleeve 2 of transmission shaft and bearing 3, bearing 3 sets up the one end of axle sleeve 2, the cover is equipped with seal receptacle 4 on the axle sleeve 2, axle sleeve 2 with be equipped with first sealed chamber 21 between the seal receptacle 4, it is equipped with manger plate subassembly 5 still to overlap on the axle sleeve 2, manger plate subassembly 5 sets up first sealed chamber 21 with between the bearing 3.

Specifically, the first seal cavity 21 is provided, two seal assemblies 22 are arranged between the seal holder 4 and the shaft sleeve 2, one end of each seal assembly 22 is connected with the shaft sleeve 2, the other end of each seal assembly 22 is connected with the seal holder 4, so that the shaft sleeve 2, the seal holder 4 and the two seal assemblies 22 are enclosed to form the first seal cavity 21, wherein each seal assembly 22 comprises a movable seal ring 221, a static seal ring 222 and a spring 223, the movable seal ring 221 is fixedly connected with the shaft sleeve 2, one end of the spring 223 is connected with the seal holder 4, the other end of the spring 223 is connected with the static seal ring 222, the spring 223 pushes the static seal ring 222 to abut against the movable seal ring 221, one end of the spring 223 is installed in the limiting groove 41 on the seal holder 4, the other end of the spring 223 is fixedly connected with the static seal ring 222, and the spring 223 cannot rotate together with the transmission shaft, the situation that the spring 223 fails due to the fact that the spring is subjected to excessive centrifugal force during high-speed operation of the device is avoided, and the fact that the spring 223 can provide compensation for the static sealing ring 222 is guaranteed, so that the reliability of mechanical sealing is improved.

The water blocking assembly 5 comprises a baffle plate 51 and a circlip 52, wherein the baffle plate 51 and the circlip 52 are arranged in a stacked mode along the length direction of the shaft sleeve 2, the baffle plate 51 is of an annular structure, the baffle plate 51 is in interference fit with the shaft sleeve 2, the circlip 52 can close a gap between the baffle plate 51 and the shaft sleeve 2 and reduce the possibility that cooling liquid leaks through the baffle plate 51, an annular groove 23 is formed in the shaft sleeve 2, and the circlip 52 is arranged in the annular groove 23.

Further, still include the

seal

6, 6 pot heads of seal are established on the seal receptacle 4, and another pot head is established on the bearing 3, make seal 6, seal receptacle 4, axle sleeve 2 and bearing 3 enclose to close and form second sealed chamber 61, overlap on seal receptacle 4 and bearing 3 and establish seal 6, form the protection to each part of mechanical seal through seal 6, improve mechanical seal's life.

The sealing body 6 is provided with a leakage liquid outlet 62, the leakage liquid outlet 62 is communicated with the second sealing cavity 61, and the leakage liquid outlet 62 is arranged on the sealing body 6, so that the cooling liquid leaked along the shaft sleeve 2 is discharged out of the second sealing cavity 61, and the leaked cooling liquid is prevented from accumulating in the second sealing cavity 61; the sealing body 6 is provided with a plurality of fluid channels 64, each fluid channel 64 penetrates through the sealing seat 4 and is communicated with the first sealing cavity 21, the plurality of fluid channels 64 can facilitate the introduction of cooling liquid into the first sealing cavity 21 from a plurality of directions at the same time, so that the cooling effect is better, wherein the fluid channels 64 comprise a first channel 641 arranged on the sealing body 6 and a second channel 642 arranged on the sealing seat 4, and the first channel 641 is communicated with the second channel 642. Furthermore, the plurality of fluid channels 64 are uniformly arranged along the circumferential direction of the sealing body 6, so that the cooling liquid can be uniformly introduced into the first sealing cavity 21, and the cooling is more sufficient and rapid. Furthermore, a baffle ring 62 is arranged on the sealing body 6 towards the second sealing cavity 21, the baffle ring 62 is arranged between the bearing 3 and the first sealing cavity 61, and the leaked cooling liquid on the shaft sleeve 2 can splash due to the fact that the shaft sleeve 2 is in a high-speed rotating state in the equipment transportation process, and the baffle ring 62 is arranged between the bearing 3 and the first sealing cavity 21 to block the splashed cooling liquid.

To sum up, the utility model relates to an adapt to multiplex condition vacuum apparatus mechanical seal device, transmission shaft 3 is used for driving the working element motion in the equipment, seal receptacle 4 is used for fixing with the equipment port, the sound cooperation is sealed to equipment inner chamber formation between seal receptacle 4 and the axle sleeve 2, and set up first seal chamber 21 between seal receptacle 4 and axle sleeve 2, let in the cooling liquid in first seal chamber 21 and realize the cooling of each friction surface of mechanical seal, and set up manger plate subassembly 5 on axle sleeve 2, first seal chamber 21 internal cooling liquid meets manger plate subassembly 5's hindrance back through the friction surface leakage, can drop along the gravity direction, make on the cooling liquid can't reach bearing 3 along axle sleeve 2 outer walls, play the guard action to bearing 3, ensure mechanical seal's normal operating.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an adapt to multiplex condition vacuum apparatus mechanical seal device, its characterized in that includes transmission shaft (1) and cover and establishes axle sleeve (2) and bearing (3) on transmission shaft (1), bearing (3) set up the one end of axle sleeve (2), the cover is equipped with seal receptacle (4) on axle sleeve (2), axle sleeve (2) with be equipped with first sealed chamber (21) between seal receptacle (4), still the cover is equipped with manger plate subassembly (5) on axle sleeve (2), manger plate subassembly (5) set up first sealed chamber (21) with between bearing (3).

2. The mechanical sealing device for the multi-working-condition-adaptive vacuum equipment is characterized in that two sealing assemblies (22) are arranged between the sealing seat (4) and the shaft sleeve (2), one end of each sealing assembly (22) is connected with the shaft sleeve (2), the other end of each sealing assembly (22) is connected with the sealing seat (4), and the shaft sleeve (2), the sealing seat (4) and the two sealing assemblies (22) are enclosed to form the first sealing cavity (21).

3. The mechanical sealing device suitable for the multi-working-condition vacuum equipment is characterized in that the sealing assembly (22) comprises a movable sealing ring (221), a static sealing ring (222) and a spring (223), the movable sealing ring (221) is fixedly connected with the shaft sleeve (2), one end of the spring (223) is connected with the sealing seat (4), the other end of the spring is connected with the static sealing ring (222), and the spring (223) pushes the static sealing ring (222) to abut against the movable sealing ring (221).

4. The mechanical sealing device suitable for the multi-working-condition vacuum equipment as claimed in claim 1, further comprising a sealing body (6), wherein one end of the sealing body (6) is sleeved on the sealing seat (4), and the other end of the sealing body (6) is sleeved on the bearing (3), so that the sealing body (6), the sealing seat (4), the shaft sleeve (2) and the bearing (3) are enclosed to form a second sealing cavity (61).

5. A mechanical sealing device adapted to a multi-condition vacuum apparatus according to claim 4, wherein a baffle ring (62) is arranged on the sealing body (6), and the baffle ring (62) is arranged between the bearing (3) and the first sealing cavity (21).

6. The mechanical sealing device for the multi-working-condition-adaptive vacuum equipment is characterized in that a leakage liquid outlet (63) is formed in the sealing body (6), and the leakage liquid outlet (63) is communicated with the second sealing cavity (61).

7. The mechanical sealing device for the multi-working-condition-adaptive vacuum equipment as claimed in claim 6, wherein a plurality of fluid channels (64) are arranged on the sealing body (6), and each fluid channel (64) penetrates through the sealing seat (4) and is communicated with the first sealing cavity (21).

8. The mechanical sealing device for the multi-working-condition-adaptive vacuum equipment as claimed in claim 7, wherein a plurality of the fluid channels (64) are uniformly arranged along the circumferential direction of the sealing body (6).

9. The mechanical sealing device for the multi-working-condition-adaptive vacuum equipment according to any one of claims 1-8, wherein the water baffle assembly (5) comprises a baffle plate (51) and a circlip (52), and the baffle plate (51) and the circlip (52) are arranged in a stacked mode along the length direction of the shaft sleeve (2).

10. The mechanical sealing device for the multi-working-condition-adaptive vacuum equipment is characterized in that an annular groove (23) is formed in the shaft sleeve (2), and the elastic check ring (52) is arranged in the annular groove (23).