CN213017717U

CN213017717U - Sealing mechanism of sludge mixing screw and sludge mixing screw machine

Info

Publication number: CN213017717U
Application number: CN202020831364.5U
Authority: CN
Inventors: 苟虎诚; 李民
Original assignee: Chengdu Drainage Co ltd
Current assignee: Chengdu Drainage Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2021-04-20
Anticipated expiration: 2030-05-18

Abstract

The utility model discloses a sealing mechanism of sludge mixing helix, belonging to the technical field of helical sealing device, comprising a shaft sleeve and a throttle ring concentrically arranged with the shaft sleeve, wherein the side wall of the inner ring of the shaft sleeve and the throttle ring is provided with a sealing element, and the outside of the shaft sleeve is sleeved with a movable ring component and a static ring component; the movable ring assembly is provided with an elastic piece and is driven to abut against the static ring assembly through the elastic piece, and a wear-resistant piece is arranged between the movable ring assembly and the static ring assembly; the outside cover of axle sleeve has the gland, and rotating ring subassembly and quiet ring subassembly all form lubricating oil chamber with gland seal assembly and between the three to reach and to reach good sealed effect, thoroughly solve the problem of leaking mud, with improve equipment operating stability's purpose.

Description

Sealing mechanism of sludge mixing screw and sludge mixing screw machine

Technical Field

The utility model belongs to the technical field of spiral sealing device, in particular to mud mixes sealing device particularly, relates to a sealing mechanism and mud mixed screw machine of mud mixed screw.

Background

At present, the mixed spiral of mud is the sealed form who adopts the packing mostly, and packing and bearing frame are installation as an organic whole, in case the packing is worn and torn with the main shaft after, sealed inefficacy, mud gets into and leads to the bearing inefficacy in the bearing, lead to the entire system trouble, and the fault rate is high, see fig. 1 and show, it is including overlapping in the epaxial traditional axle sleeve of spiral, the bearing, outside cover at the bearing has the bearing frame, and be equipped with the packing box between traditional axle sleeve and bearing frame, the inside packing that is equipped with of packing box, the packing passes through the clamp ring with its inside at the packing box, in the operation, after packing and main shaft wearing and tearing, mud gets into and leads to the bearing inefficacy in the bearing, and then can.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve the above-mentioned problem that prior art exists, the utility model aims at providing a sealing mechanism and the mixed spiral machine of mud mixed spiral can reach good sealed effect in order to reach, thoroughly solves the problem of hourglass mud to improve equipment operating stability's purpose.

The utility model discloses the technical scheme who adopts does: a sealing mechanism of a sludge mixing spiral comprises a shaft sleeve and a throttling ring which is concentrically arranged with the shaft sleeve, wherein sealing elements are arranged on the side walls of an inner ring of the shaft sleeve and the throttling ring, and a movable ring assembly and a static ring assembly are sleeved outside the shaft sleeve; the movable ring assembly is provided with an elastic piece and is driven to abut against the static ring assembly through the elastic piece, and a wear-resistant piece is arranged between the movable ring assembly and the static ring assembly; the outside cover of axle sleeve has the gland, and rotating ring subassembly and quiet ring subassembly all seal assembly and form the lubricating oil chamber with the gland between the three.

Furthermore, a plurality of annular grooves are arranged on the side wall of the inner ring of the throttling ring in parallel so as to form primary blocking seal for the sludge through the annular grooves.

Furthermore, a plurality of O-shaped sealing rings which are arranged in parallel are embedded on the side wall of the inner ring of the shaft sleeve, so that secondary blocking sealing for sludge is formed through the O-shaped sealing rings.

Furthermore, the elastic part comprises a spring seat and a spring, the spring seat is sleeved on the shaft sleeve and is fixed on the shaft sleeve through a set screw, one end of the spring is abutted against the spring seat, and the other end of the spring is abutted against the moving ring assembly, so that the moving ring assembly can be always abutted against the static ring assembly through the spring.

Furthermore, an O-shaped sealing ring is arranged between the moving ring assembly and the shaft sleeve, an oil seal is assembled between the moving ring assembly and the gland, and a clamping ring is arranged on the gland and fixes the oil seal through the clamping ring, so that the lubricating oil cavity is ensured to have good sealing performance.

Furthermore, the wear-resistant part comprises a first wear-resistant block and a second wear-resistant block, the first wear-resistant block and the second wear-resistant block are respectively arranged at the end parts of the static ring component and the dynamic ring component, the first wear-resistant block and the second wear-resistant block are in good abutting contact all the time while in relative friction, and the first wear-resistant block and the second wear-resistant block are both made of silicon carbide.

Furthermore, an oil duct communicated with the lubricating oil cavity is formed in the pressure cover, and the oil duct is connected with an automatic lubricating device for filling lubricating grease into the oil duct, so that lubricating grease is filled into the lubricating oil cavity in real time.

Furthermore, a first anti-rotation pin is arranged between the gland and the throttling ring, and a second anti-rotation pin is arranged between the gland and the static ring assembly so as to limit the rotation of the throttling ring and the static ring assembly.

Furthermore, the pressing cover further comprises a positioning block detachably assembled on the shaft sleeve, and the other end of the positioning block is detachably assembled on the pressing cover and used for positioning and installing the pressing cover through the positioning block, so that the pressing cover and the shaft sleeve can be quickly and accurately installed.

The sludge mixing screw machine comprises a screw shaft and bearing support seat assemblies arranged at two ends of the screw shaft, one end of the screw shaft is connected with a driving motor through a coupling, the sludge mixing screw machine further comprises connecting plates, the connecting plates are respectively arranged at two ends of a screw section of the screw shaft, a sealing mechanism of the sludge mixing screw is arranged on each connecting plate, and the sealing mechanism of the sludge mixing screw is sleeved on a shaft section of the screw shaft.

The utility model has the advantages that:

1. the utility model provides a sealing mechanism and mud mixed screw machine of mud mixed screw, it is in the application, can realize separately arranging bearing and sealing mechanism, convenient dismantlement and maintenance are changed, and simultaneously, constitute mechanical seal by rotating ring subassembly and quiet ring subassembly in sealing mechanism, mechanical seal has stand wear and tear and keeps the advantage of good leakproofness all the time under the effect of spring part, through the restrictor ring, axle sleeve and mechanical seal carry out the sealed of multidimension degree many times, thoroughly solved hourglass mud problem, odor point has been reduced, satisfy the environmental protection requirement, the site operation environment has also been improved, ensure staff occupational health, improve equipment's stability.

Drawings

FIG. 1 is a sealing mechanism for a sludge mixing screw of the prior art;

FIG. 2 is a schematic overall sectional view of the sealing mechanism of the sludge mixing screw provided by the present invention;

FIG. 3 is a schematic view of the overall structure of the sludge mixing screw machine provided by the present invention;

the drawings are labeled as follows:

1-a throttle ring, 2-a gland, 3-a stationary ring component, 4-a shaft sleeve, 5-a movable ring component, 6-a retainer ring, 7-a positioning block, 8-a spring, 9-a spring seat, 10-a connecting screw, 11-a first anti-rotation pin, 12-a second anti-rotation pin, 13-a first O-shaped seal ring, 14-a third O-shaped seal ring, 15-a fourth O-shaped seal ring, 16-an oil seal, 17-a second O-shaped seal ring, 18-a second set screw, 19-a first set screw, 20-a first wear-resistant block, 21-a second wear-resistant block, 22-an oil channel, 23-a bearing support seat component, 24-a sealing mechanism, 25-a pull rod, 26-an end shaft, 27-a cover plate component, 28-a connecting plate and 29-a bearing seat, 30-traditional shaft sleeve, 31-shaft, 32-packing, 33-stuffing box and 34-compression ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indication of the position or the positional relationship is based on the position or the positional relationship shown in the drawings, or the position or the positional relationship that the utility model is usually placed when using, or the position or the positional relationship that the skilled person conventionally understands, or the position or the positional relationship that the utility model is usually placed when using, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or suggest that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases for a person of ordinary skill in the art; the drawings in the embodiments are provided to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 2, in this embodiment, a sealing mechanism for a sludge mixing screw is specifically provided, which includes a shaft sleeve 4, and further includes a throttle ring 1 concentrically arranged with the shaft sleeve 4, where the throttle ring 1 and the shaft sleeve 4 are both sleeved on a shaft section of a screw shaft to be sealed, and a first set screw 19 is provided on the shaft sleeve 4, and the shaft sleeve 4 is fixedly sleeved on the screw shaft by screwing the first set screw 19. Be equipped with the sealing member on the inner ring lateral wall of axle sleeve 4 and choke ring 1 to this forms the one-level sealed and the second grade of mud respectively and seals, specifically do: after the sealing mechanism is installed, the throttle ring 1 is tightly attached to the connecting plate 28, a plurality of annular grooves are arranged in parallel on the inner ring side wall of the throttle ring 1, in the embodiment, two annular grooves are arranged, and primary sealing is formed on sludge through the two annular grooves; because the shaft sleeve 4 is sleeved on the shaft section of the screw shaft, a plurality of first O-shaped sealing rings 13 which are arranged in parallel are embedded on the side wall of the inner ring of the shaft sleeve 4, in this embodiment, two first O-shaped sealing rings 13 are embedded and located at one end close to the throttling ring 1.

Meanwhile, the movable ring assembly 5 and the static ring assembly 3 are sleeved outside the shaft sleeve 4, mechanical seal is formed by the movable ring assembly 5 and the static ring assembly 3, the mechanical seal serves as a three-stage seal, and a good sealing effect can be achieved under the condition that the first-stage seal and the second-stage seal are matched. The movable ring assembly 5 is slidably sleeved on the shaft sleeve 4, the movable ring assembly 5 is provided with an elastic part and is driven to abut against the static ring assembly 3 through the elastic part, and a wear-resistant part is arranged between the movable ring assembly 5 and the static ring assembly 3, in practical application, the wear-resistant part comprises a first wear-resistant block 20 and a second wear-resistant block 21, and the first wear-resistant block 20 and the second wear-resistant block 21 are respectively arranged on the end parts of the static ring assembly 3 and the movable ring assembly 5; the outside of the shaft sleeve 4 is sleeved with a gland 2, a plurality of bolt holes are uniformly arranged on the gland 2 along the same circumference, the gland 2 is fixed and installed through each bolt hole, a fourth O-shaped sealing ring 15 is embedded on the end surface of the gland 2, so as to ensure the sealing performance of the gland 2 after the gland is installed through the fourth O-shaped sealing ring 15, the movable ring component 5 and the static ring component 3 are hermetically assembled with the gland 2, and a lubricating oil cavity is formed among the movable ring component 5 and the static ring component 3, lubricating grease is filled in the lubricating oil cavity, relative motion between the moving ring assembly 5 and the static ring assembly 3 can be lubricated in real time under the action of the lubricating grease, friction loss is greatly reduced, and meanwhile, because the movable ring assembly 5 is under the action of the elastic member, the first wear-resistant block 20 and the second wear-resistant block 21 are always in a mutually abutting state while moving relatively, and thus a good sealing effect on sludge can be ensured.

In order to provide sufficient elastic acting force for the moving ring assembly 5, in this embodiment, the elastic member includes a spring seat 9 and a spring 8 sleeved on the shaft sleeve 4, the spring seat 9 is fixed on the shaft sleeve 4 through a second set screw 18, one end of the spring 8 abuts against the spring seat 9, and the other end abuts against the moving ring assembly 5, so as to provide sufficient elastic acting force for the moving ring assembly 5 through the spring 8.

In order to ensure good sealing performance of a lubricating oil cavity, a second O-shaped sealing ring 17 is arranged between the movable ring assembly 5 and the shaft sleeve 4, an oil seal 6 is assembled between the movable ring assembly 5 and the gland 2, an annular groove is formed in the side wall of the inner ring of the gland 2, the oil seal 6 is arranged in the annular groove, the gland 2 is provided with a clamping ring 6, the oil seal 6 is fixed through the clamping ring 6, sealing between the movable ring assembly 5 and the gland 2 is achieved through the oil seal 6, and a third O-shaped sealing ring 14 is arranged between the static ring assembly 3 and the gland 2. Wherein, the oil seal 6 adopts an inner skeleton oil seal 6.

For the realization can be in real time to lubricating oil intracavity filling lubricating grease seted up on the gland 2 with the oil duct 22 of lubricating oil chamber intercommunication, oil duct 22 is connected with the automatic lubrication device to its filling lubricating grease, and automatic lubrication device includes oil storage tank and oil pump, just installs the oil pump on the pipeline through the pipeline intercommunication between oil storage tank and the oil duct 22 to through the oil pump to lubricating oil intracavity real-time filling lubricating grease.

In order to ensure that the throttling ring 1 and the static ring component 3 cannot generate linkage rotation along with the screw shaft in a working state, a first anti-rotation pin 11 is arranged between the gland 2 and the throttling ring 1, the first anti-rotation pin 11 is positioned in the axis direction of the screw shaft, and two ends of the first anti-rotation pin 11 are respectively inserted into the throttling ring 1 and the gland 2 so as to prevent the throttling ring 1 from rotating; and a second anti-rotation pin 12 is arranged between the gland 2 and the static ring component 3, the second anti-rotation pin 12 is positioned in the radial direction of the screw shaft, and two ends of the second anti-rotation pin are respectively inserted into the gland 2 and the static ring component 3, so that the static ring component 3 is prevented from rotating.

In order to realize accurate installation of the gland 2, the installation fixture further comprises a positioning block 7 which is detachably assembled on the shaft sleeve 4, the other end of the positioning block 7 is detachably assembled on the gland 2 and is used for positioning and installing the gland 2 through the positioning block 7, in the initial installation stage, two ends of the positioning block 7 are respectively fixed on the gland 2 and the shaft sleeve 4 through connecting screws 10, the gland 2 and the shaft sleeve 4 are installed through the positioning block 7 to be positioned, and the positioning block 7 is detached until the installation is completed.

Adopt the sealing mechanism of the mixed spiral of mud that this embodiment provided, its theory of operation is as follows:

when the screw shaft rotates, the screw shaft is linked with the shaft sleeve 4 to rotate, the shaft sleeve 4 is linked with the spring seat 9, the spring 8 and the moving ring component 5 to rotate, the gland 2 is arranged on the connecting plate 28, the throttling ring 1 and the static ring component 3 do not rotate under the action of the first anti-rotating pin 11 and the second anti-rotating pin 12, when the screw shaft works, a first-stage sealing protection is formed by a groove on the throttling ring 1, a second-stage sealing protection is formed by the first O-shaped sealing ring 13 on the shaft sleeve 4, the moving ring component 5 rotates relative to the static ring component 3, the first wear-resisting block 20 and the second wear-resisting block 21 between the moving ring component 5 and the static ring component 3 rub against each other all the time while rubbing against each other, so as to form a third sealing protection, prevent the leakage of sludge, and improve the running stability of the equipment.

Example 2

As shown in fig. 3, on the basis of the sealing mechanism of the sludge mixing screw provided in embodiment 1, in this embodiment, there is also provided a sludge mixing screw machine, which includes a screw shaft and bearing support seat assemblies 23 disposed at both ends of the screw shaft, the bearing support seat assemblies 23 are mounted on a cover plate assembly 27, each bearing support seat assembly 23 includes a bearing sleeved on the screw shaft and a bearing support seat for mounting the bearing, one end of the screw shaft (i.e. an end shaft 26) is connected with a driving motor through a coupling, the screw shaft is provided with rotational power through the driving motor, and the sludge mixing screw machine further includes two connecting plates 28, the two connecting plates 28 are connected and fixed through a pull rod 25, the connecting plates 28 are respectively disposed at both ends of the screw section of the screw shaft, and the connecting plates 28 are provided with the sealing mechanism 24 of the sludge mixing screw and the sealing mechanism 24 of the sludge mixing screw is sleeved on the shaft section (i.e. the end shaft, in order to realize at the during operation, separately arrange bearing and seal receptacle, convenient dismantlement and maintenance are changed, overcome traditional sealing mechanism and can lead to the production of trouble because of the damage of bearing.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. A sealing mechanism of a sludge mixing spiral comprises a shaft sleeve and is characterized by further comprising a throttling ring which is concentrically arranged with the shaft sleeve, sealing elements are arranged on the side walls of an inner ring of the shaft sleeve and the throttling ring, and a movable ring assembly and a static ring assembly are sleeved outside the shaft sleeve; the movable ring assembly is provided with an elastic piece and is driven to abut against the static ring assembly through the elastic piece, and a wear-resistant piece is arranged between the movable ring assembly and the static ring assembly; the outside cover of axle sleeve has the gland, and rotating ring subassembly and quiet ring subassembly all seal assembly and form the lubricating oil chamber with the gland between the three.

2. The sludge mixing screw sealing mechanism of claim 1 wherein a plurality of annular grooves are arranged in parallel on the inner ring side wall of the restrictor ring.

3. The sealing mechanism for the sludge mixing screw according to claim 1, wherein a plurality of parallel O-shaped sealing rings are embedded on the side wall of the inner ring of the shaft sleeve.

4. The sealing mechanism for the sludge mixing screw according to claim 1, wherein the elastic member comprises a spring seat and a spring, the spring seat is sleeved on the shaft sleeve, the spring seat is fixed on the shaft sleeve through a set screw, one end of the spring abuts against the spring seat, and the other end of the spring abuts against the movable ring component.

5. The sludge mixing screw sealing mechanism as claimed in claim 1, wherein an O-shaped sealing ring is arranged between the moving ring assembly and the shaft sleeve, an oil seal is arranged between the moving ring assembly and the gland, and a clamping ring is arranged on the gland and fixes the oil seal through the clamping ring.

6. The sludge mixing screw sealing mechanism of claim 1, wherein the wear resistant member comprises a first wear resistant block and a second wear resistant block, the first wear resistant block and the second wear resistant block being mounted on the ends of the stationary ring assembly and the moving ring assembly, respectively.

7. The sealing mechanism for the sludge mixing screw according to claim 1, wherein the pressing cover is provided with an oil passage communicated with the lubricating oil cavity, and the oil passage is connected with an automatic lubricating device for filling lubricating grease into the oil passage.

8. The sludge mixing screw sealing mechanism according to claim 1, wherein a first anti-rotation pin is arranged between the gland and the throttle ring, and a second anti-rotation pin is arranged between the gland and the stationary ring component.

9. The sealing mechanism of the sludge mixing screw according to claim 1, further comprising a positioning block detachably mounted on the shaft sleeve, wherein the other end of the positioning block is detachably mounted on the gland and the gland is positioned and mounted through the positioning block.

10. A sludge mixing screw machine comprises a screw shaft and bearing support seat assemblies arranged at two ends of the screw shaft, wherein one end of the screw shaft is connected with a driving motor through a coupling, and the sludge mixing screw machine is characterized by further comprising connecting plates, wherein the connecting plates are respectively arranged at two ends of a screw section of the screw shaft, the connecting plates are provided with the sealing mechanism of the sludge mixing screw according to any one of claims 1 to 9, and the sealing mechanism of the sludge mixing screw is sleeved on a shaft section of the screw shaft.