CN216430499U - Floating discharge sealing structure of steam rotary dryer - Google Patents
Floating discharge sealing structure of steam rotary dryer Download PDFInfo
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- CN216430499U CN216430499U CN202122067289.7U CN202122067289U CN216430499U CN 216430499 U CN216430499 U CN 216430499U CN 202122067289 U CN202122067289 U CN 202122067289U CN 216430499 U CN216430499 U CN 216430499U
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Abstract
The utility model relates to a floating type discharging sealing structure of a steam rotary dryer, which comprises: the front sealing structure comprises a supporting structure, a front expansion joint and a front packing box, wherein the supporting structure comprises a flange, a bearing support and a discharge box support which are sequentially connected, the flange is fixed on the barrel and positioned in front of the main machine shaft sleeve, the front expansion joint is fixed on the front side of a box body of the discharge box, the front packing box is arranged on the main machine shaft sleeve, the front expansion joint and the front packing box are fixedly connected, and a second sealing ring is arranged at the joint of the front expansion joint and the front packing box; and the rear sealing structure comprises a rear expansion joint and a rear packing box, the rear expansion joint is fixed at the rear side of the box body of the discharging box, the rear packing box is arranged on the main shaft sleeve, and a fourth sealing ring is arranged at the position of the rear expansion joint, the rear packing box and the fixed connection between the rear expansion joint and the rear packing box. The discharging sealing structure is accurate in installation and positioning, and the sealing assembly can be aligned in multiple stages, so that the stress of the filler is more uniform in the operation process.
Description
Technical Field
The utility model relates to a discharging sealing structure, in particular to a floating discharging sealing structure of a steam rotary dryer, in particular to a floating discharging sealing structure of a PPE device steam rotary dryer.
Background
The discharging and sealing structure of the steam rotary dryer used in the PPE production device in the prior art belongs to a single-bearing cantilever support rotating structure, a front packing box, a rear packing box and a discharging box are integrated, the concentricity of the packing boxes is difficult to adjust, and a packing gap between the packing boxes and a main machine shaft sleeve can only be ensured by depending on the processing precision and the assembling precision. The eccentric wear of the filler is easy to occur in the using process, so that the abrasion of a main machine shaft sleeve and the heating of the filler are caused, and the leakage condition of a sealing part is caused;
the PPE powder has low density and high strength, and the solvent in the wet PPE material contains toluene. Compared with materials such as HDPE, PTA and the like, the PPE material is easier to dust and can destroy the sealing filler faster.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, the present invention aims to provide a floating type discharging sealing structure of a steam rotary dryer, which can ensure the concentricity of a front sealing structure and a rear sealing structure with a main machine shaft sleeve through the floating of an expansion joint, thereby better solving the problems existing in the prior art.
Therefore, the utility model provides a floating type discharging sealing structure of a steam rotary dryer, which is arranged on a main machine shaft sleeve between a cylinder body and a discharging box of the steam rotary dryer, and comprises the following components:
the front sealing structure comprises a supporting structure, a front expansion joint and a front packing box, wherein the supporting structure comprises a flange, a bearing support and a discharge box support which are sequentially connected, the flange is fixed on the barrel and positioned in front of the main machine shaft sleeve, the front expansion joint is fixed on the front side of the box body of the discharge box, the front packing box is arranged on the main machine shaft sleeve, the front expansion joint and the front packing box are fixedly connected, and a second sealing ring is arranged at the connection position;
and the rear sealing structure comprises a rear expansion joint and a rear packing box, the rear expansion joint is fixed at the rear side of the box body of the discharging box, the rear packing box is arranged on the main shaft sleeve, and a fourth sealing ring is arranged at the position of the rear expansion joint, the rear packing box and the fixed connection between the rear expansion joint and the rear packing box.
Specifically, the front sealing structure and the rear sealing structure are provided with expansion joints, the expansion joints can compensate for gaps between the packing box and a main machine shaft sleeve, eccentric wear of the packing caused by concentricity deviation is eliminated, and the packing is more uniformly stressed in the operation process.
The utility model relates to a floating type discharging sealing structure of a steam rotary dryer, wherein preferably, a front jackscrew seat is further arranged between a box body and a front expansion joint, a rear jackscrew seat is further arranged between the box body and a rear expansion joint, and a front jackscrew and a rear jackscrew are respectively arranged on the front jackscrew seat and the rear jackscrew seat; preferably, the front jackscrew is fixedly connected with the discharge box support, and the front stuffing box is fixedly connected with the bearing support.
According to the floating type discharging sealing structure of the steam rotary dryer, the bearing support is preferably in bolted connection with the flange through a bearing, and the discharging box support is preferably connected between the bearing support and the discharging box through bolts.
The floating type discharging sealing structure of the steam rotary dryer is characterized in that preferably, spigot structures are respectively arranged on the connecting surfaces among the flange, the bearing support, the discharging box support and the discharging box for positioning.
The floating type discharging sealing structure of the steam rotary dryer, provided by the utility model, has the advantages that a first sealing ring is preferably arranged at the joint of the front expansion joint and the front jackscrew.
According to the floating type discharging sealing structure of the steam rotary dryer, the front stuffing box is preferably connected with the front expansion joint through a bolt, and the rear stuffing box is preferably connected with the rear expansion joint through a bolt.
The floating type discharging sealing structure of the steam rotary dryer, disclosed by the utility model, has the advantages that preferably, the front stuffing box comprises a front box body, front stuffing and a front stuffing gland, the front stuffing is tightly pressed in the front box body through the front stuffing gland, and the front stuffing, the main machine shaft sleeve and the front box body are respectively and tightly attached to form sealing surfaces; further preferably, the front filler is a self-lubricating square filler; further preferably, the front packing gland adjusts the pressing force of the front packing on the front packing by the bolt pretightening force.
The floating type discharging sealing structure of the steam rotary dryer is characterized in that a third sealing ring is preferably arranged at the joint of the rear expansion joint and the rear jackscrew.
The floating type discharging sealing structure of the steam rotary dryer, disclosed by the utility model, has the advantages that preferably, the rear stuffing box comprises a rear box body, rear stuffing and a rear stuffing gland, the rear stuffing is tightly pressed in the rear box body through the rear stuffing gland, and the rear stuffing is tightly attached to the main machine shaft sleeve and the rear box body respectively to form sealing surfaces; further preferably, the rear filler is a self-lubricating square filler; further preferably, the rear packing gland adjusts the pressing force of the rear packing by the pre-tightening force of the stud.
The utility model relates to a floating type discharging sealing structure of a steam rotary dryer, wherein preferably, a first trapezoidal sealing ring is arranged at the joint of a front expansion joint and a front jackscrew, a second trapezoidal sealing ring is arranged at the joint of a rear expansion joint and a rear jackscrew, a channel with two large ends and a small middle part is formed by the front expansion joint, the rear expansion joint, a front packing box, a rear packing box, a main machine shaft sleeve and a discharging box through the first trapezoidal sealing ring and the second trapezoidal sealing ring, and gas transmission holes are respectively arranged on the front expansion joint and the rear expansion joint. When nitrogen is input into the channel through the gas transmission hole and flows through the first trapezoidal sealing ring or the second trapezoidal sealing ring from the outer side to enter the discharge box, the nitrogen is high in pressure and speed, and therefore the possibility of leakage of materials from the position is effectively reduced.
According to the floating type discharging sealing structure of the steam rotary dryer, the front jackscrew and the rear jackscrew are radial jackscrews, and the expansion joint can be aligned.
The utility model has the technical effects that:
(1) this floating ejection of compact seal structure installation location is accurate, but seal assembly multistage aligning, and both sides are radially provided with the regulation jackscrew seat around the play workbin, and adjustable packing box clearance, thereby the expansion joint can float on the host computer axle sleeve and carry out the concentricity compensation, eliminates the packing eccentric wear that the concentricity deviation caused for the operation in-process packing atress is more even.
(2) The front sealing structure and the rear sealing structure are of a single structure, the welding amount is small, the manufacturing is simple, and the use process is not easy to deform.
(3) The cross section that sets up respectively in the preceding back seal structure is trapezoidal sealing ring, and it compresses tightly on ejection of compact case side through the expansion joint flange to at sealing ring, ejection of compact case and host computer axle sleeve three combination position formed a special flow cavity (airtight space), after the input nitrogen gas, the even grow of speed and pressure of nitrogen gas in this cavity, thereby play better sealed effect.
(4) The packing in the front and rear sealing structures is self-lubricating square packing which is non-grease lubrication, so that the materials can be prevented from being polluted by grease. In addition, when the inspection and maintenance are carried out, the fillers in the front and rear sealing structures can be replaced under the condition that the discharge box is not detached, so that the maintenance cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a floating discharge seal structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a front sealing structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rear sealing structure according to an embodiment of the present invention.
Wherein the content of the first and second substances,
100 front sealing structure
200 rear sealing structure
1 Flange
2 bearing
3 bearing support
4 front packing gland
5 front stuffing box
6 go out workbin support
7 front expansion joint
8 first trapezoidal sealing ring
9 front jackscrew
10 discharge box
11 second trapezoidal sealing ring
12 rear jackscrew
13 rear expansion joint
14 rear square filler
15 back stuffing box
16 back packing gland
17 fourth seal ring
18 third seal ring
19 first seal ring
20 front filler
21 second seal ring
22 main unit axle sleeve
23 main body cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. The present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Referring to fig. 1 to 3, the present invention provides a floating type discharging sealing structure of a steam rotary dryer. Fig. 1 is a schematic structural diagram of a floating discharge sealing structure of an embodiment, fig. 2 is a schematic structural diagram of a front sealing structure of the floating discharge sealing structure of the embodiment, and fig. 3 is a schematic structural diagram of a rear sealing structure of the floating discharge sealing structure of the embodiment.
Referring to fig. 1, the floating type discharging sealing structure provided by the utility model is arranged on a main machine shaft sleeve 22 between a main machine cylinder 23 and a discharging box 10 of a steam rotary dryer, a front jackscrew seat and a rear jackscrew seat are respectively arranged on the front side and the rear side of a box body of the discharging box 10, a front jackscrew 9 and a rear jackscrew 12 are respectively arranged on the front jackscrew seat and the rear jackscrew seat, and both the front jackscrew 9 and the rear jackscrew 12 are radial jackscrews which can align an expansion joint.
Referring to fig. 1-3, the floating discharge seal structure comprises: a front seal structure 100 and a rear seal structure 200. The front sealing structure 100 comprises a supporting structure, a front expansion joint 7 and a front stuffing box 5, wherein the supporting structure comprises a flange 1, a bearing 2, a bearing support 3, a discharge box support 6 and a front jackscrew 9 which are connected in sequence through a stud, the flange 1 is fixed on a main machine cylinder 23 and positioned in front of a main machine shaft sleeve 22, the front expansion joint 7 is fixed on the front jackscrew 9, the front stuffing box 5 is arranged on the main machine shaft sleeve 22 and fixedly connected with the bearing support 3, the front expansion joint 7 and the front stuffing box 5 are fixedly connected through a bolt, and a second sealing ring 21 is arranged at the joint of the front expansion joint 7 and the front stuffing box 5; the rear sealing structure 200 comprises a rear jackscrew 12, a rear expansion joint 13 and a rear stuffing box 15, wherein the rear expansion joint 13 is fixed on the rear jackscrew 12, the rear stuffing box 15 is arranged on a main machine shaft sleeve 22, a bolt is fixedly connected between the rear expansion joint 13 and the rear stuffing box 15, and a fourth sealing ring 17 is arranged at the joint of the rear expansion joint 13 and the rear stuffing box 15.
The front stuffing box 5 comprises a front box body, a front stuffing 20 and a front stuffing gland 4, wherein the front stuffing 20 is tightly pressed in the front box body through the front stuffing gland 4, and the front stuffing 20 is tightly attached to the main machine shaft sleeve 22 and the front box body respectively to form a sealing surface; in some embodiments, the front packing 20 is preferably a self-lubricating square packing, and the front packing gland 4 preferably adjusts the pressing force of the front packing 20 by the stud pretightening force.
The rear stuffing box 15 comprises a rear box body, a rear-shaped stuffing 14 and a rear stuffing gland 16, the rear-shaped stuffing 14 is tightly pressed in the rear box body through the rear stuffing gland 16, and the rear-shaped stuffing 14 is tightly attached to the main machine shaft sleeve 22 and the rear box body respectively to form sealing surfaces; in some embodiments, the rear packing 14 is preferably a self-lubricating square packing, and the rear packing gland 16 adjusts its own pressing force on the rear packing 14 by means of stud pretension.
Therefore, the floating type discharging sealing structure provided by the embodiment of the utility model can prevent the filler from heating caused by uneven stress on the filler in the operation process. In the existing discharging sealing structure, due to processing and manufacturing errors and installation errors, the concentricity between the front stuffing box and the rear stuffing box and the main machine shaft sleeve is not ideal, namely, the stuffing gap is not uniform. Aiming at the problem, two expansion joints, namely the front expansion joint 7 and the rear expansion joint 13, are additionally arranged in the floating type discharging sealing structure provided by the embodiment, and the expansion joints have better flexibility, so that the concentricity between the packing box and the main machine shaft sleeve can be compensated, and the friction heating between the main machine shaft sleeve and the packing is reduced. The sealing principle and the operation principle of the rear sealing structure 200 are completely the same as those of the front sealing structure 100, and are not described herein again.
In some embodiments, all the connecting surfaces of the flange 1, the bearing 2, the bearing support 3, the discharge box support 6 and the discharge box 10 to each other are provided with a spigot structure for positioning.
In some embodiments, a first sealing ring 19 is arranged at the joint of the front expansion joint 7 and the front jackscrew 9, and a third sealing ring 18 is arranged at the joint of the rear expansion joint 13 and the rear jackscrew 12.
In some embodiments, a first trapezoidal sealing ring 8 is arranged at the joint of the front expansion joint 7 and the front jackscrew 9, and a second trapezoidal sealing ring 11 is arranged at the joint of the rear expansion joint 13 and the rear jackscrew 12. A channel with two large ends and a small middle part is formed by the front expansion joint, the rear expansion joint, the front stuffing box, the rear stuffing box, the main machine shaft sleeve 22 and the discharging box 10, and air conveying holes are respectively arranged on the front expansion joint and the rear expansion joint. After nitrogen is input into the channel through the gas transmission hole, the nitrogen flows through the first trapezoidal sealing ring 8 or the second trapezoidal sealing ring 11 from the outer side and enters the discharge box 10, the nitrogen becomes high pressure and high speed, and therefore the possibility of leakage of materials from the position is effectively reduced.
In the above embodiment, with reference to fig. 2, the front expansion joint 7 is provided with a gas transmission hole to serve as a nitrogen injection hole, and nitrogen is provided into the channel through the nitrogen injection hole to form a flame-retardant airtight environment and block the contact between the material and the filler. Moreover, the flexibility of the expansion joint can be adjusted through a pull rod in the front expansion joint 7, and further the pressing force applied by the front expansion joint 7 on the front square packing 20 through the front stuffing box 5 is adjusted, so that the pressure caused by the concentricity deviation of the front stuffing box 5 and the main axle sleeve 22 is eliminated by adjusting the main axle sleeve 22 to act on the front square packing 20, and the pressure needs to be ensured to be as small as possible on the premise of ensuring no material leakage, and the temperature of the front square packing 20 is prevented from being too high.
From the above, referring to fig. 3, the rear expansion joint 13 is provided with a gas transmission hole which can also be used as a nitrogen injection hole, and nitrogen is provided to the channel through the nitrogen injection hole to form a flame-retardant airtight space environment and block the contact between the material and the filler. In addition, the flexibility of the expansion joint can be adjusted through a pull rod in the rear expansion joint 13, and then the pressing force applied to the rear square packing 14 by the rear expansion joint 13 through the rear packing box 15 is adjusted, so that the pressure caused by the concentricity deviation of the rear packing box 15 and the main shaft sleeve 22 is eliminated by adjusting the main shaft sleeve 22 acting on the rear square packing 14, and the pressure needs to be ensured to be as small as possible on the premise of ensuring no material leakage, and the temperature of the rear square packing 14 is prevented from being too high.
In some embodiments, the first seal ring 19, the second seal ring 21, the third seal ring 18, and the fourth seal ring 17 are all preferably "O" ring seals. When the equipment is operated, materials enter the discharging box 10 through a material channel in the main machine cylinder 23, and the first sealing ring 19 can realize the sealing between the front expansion joint 7 and the discharging box 10; the second sealing ring 21 can realize the sealing between the front stuffing box 5 and the front expansion joint 7; the third sealing ring 18 can realize the sealing between the rear expansion joint 13 and the discharging box 10; the fourth sealing ring 17 seals the rear stuffing box 15 from the rear expansion joint 13.
It should be noted that the above preferred embodiments are only for illustrating the present invention, but the present invention is not limited to the above embodiments, and variations and modifications within the spirit of the present invention, which are made by those skilled in the art, are included in the protection scope of the present invention.
Claims (15)
1. The utility model provides a floating ejection of compact seal structure of steam rotary dryer which characterized in that, this floating ejection of compact seal structure sets up on the barrel of steam rotary dryer and the host computer axle sleeve between the play workbin, include:
the front sealing structure comprises a supporting structure, a front expansion joint and a front packing box, wherein the supporting structure comprises a flange, a bearing support and a discharge box support which are sequentially connected, the flange is fixed on the barrel and positioned in front of the main machine shaft sleeve, the front expansion joint is fixed on the front side of the box body of the discharge box, the front packing box is arranged on the main machine shaft sleeve, the front expansion joint and the front packing box are fixedly connected, and a second sealing ring is arranged at the connection position;
and the rear sealing structure comprises a rear expansion joint and a rear packing box, the rear expansion joint is fixed at the rear side of the box body of the discharging box, the rear packing box is arranged on the main shaft sleeve, and a fourth sealing ring is arranged at the position of the rear expansion joint, the rear packing box and the fixed connection between the rear expansion joint and the rear packing box.
2. The floating type discharging sealing structure of the steam rotary dryer according to claim 1, characterized in that a front jackscrew seat is further provided between the box body and the front expansion joint, a rear jackscrew seat is further provided between the box body and the rear expansion joint, and a front jackscrew and a rear jackscrew are respectively mounted on the front jackscrew seat and the rear jackscrew seat.
3. The floating discharge sealing structure of steam rotary dryer according to claim 2, characterized in that the front jackscrew is fixedly connected with the discharge box bracket, and the front stuffing box is fixedly connected with the bearing bracket.
4. The steam rotary dryer floating discharge seal structure of claim 2 wherein said front jackscrew and said rear jackscrew are both radial jackscrews.
5. The floating type discharging sealing structure of the steam rotary dryer according to claim 2, characterized in that a first sealing ring is arranged at the joint of the front expansion joint and the front jackscrew.
6. The floating discharge sealing structure of steam rotary dryer according to claim 2, characterized in that the junction of the rear expansion joint and the rear jackscrew is provided with a third sealing ring.
7. The floating type discharging sealing structure of the steam rotary dryer according to claim 2, characterized in that a first trapezoid sealing ring is arranged at the joint of the front expansion joint and the front jackscrew, a second trapezoid sealing ring is arranged at the joint of the rear expansion joint and the rear jackscrew, a passage with two large ends and a small middle is formed between the front expansion joint, the rear expansion joint, the front stuffing box, the rear stuffing box, the main shaft sleeve and the discharging box through the first trapezoid sealing ring and the second trapezoid sealing ring, and the front expansion joint and the rear expansion joint are respectively provided with an air delivery hole.
8. The floating discharge seal structure of steam rotary dryer according to claim 1, characterized in that said bearing bracket is bolted to said flange through a bearing, said discharge box bracket is bolted between said bearing bracket and discharge box, said front stuffing box is bolted to said front expansion joint, and said rear stuffing box is bolted to said rear expansion joint.
9. The floating discharge sealing structure of steam rotary dryer according to claim 1, characterized in that the flange, bearing support, discharge box support and discharge box are respectively provided with spigot structure for positioning on the connecting surface.
10. The floating type discharging sealing structure of the steam rotary dryer as claimed in claim 1, wherein the front stuffing box comprises a front box body, a front stuffing and a front stuffing gland, the front stuffing is compressed inside the front box body through the front stuffing gland, and the front stuffing is tightly attached to the main shaft sleeve and the front box body respectively to form sealing surfaces.
11. The rotary steam dryer floating discharge seal configuration of claim 10 wherein said front packing is a self-lubricating square packing.
12. The floating discharge seal structure of steam rotary dryer according to claim 11, characterized in that the front packing gland adjusts its own pressing force on the front packing by stud pre-tightening force.
13. The floating type discharging sealing structure of the steam rotary dryer as claimed in claim 1, wherein the rear stuffing box comprises a rear box body, a rear stuffing and a rear stuffing gland, the rear stuffing is compressed inside the rear box body through the rear stuffing gland, and the rear stuffing is tightly attached to the main machine shaft sleeve and the rear box body respectively to form sealing surfaces.
14. The rotary steam dryer floating discharge seal structure of claim 13 wherein said back packing is self-lubricating square packing.
15. The floating discharge seal structure of steam rotary dryer according to claim 14, characterized in that the rear packing gland adjusts its own pressing force on the rear packing by stud pretension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122067289.7U CN216430499U (en) | 2021-08-30 | 2021-08-30 | Floating discharge sealing structure of steam rotary dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122067289.7U CN216430499U (en) | 2021-08-30 | 2021-08-30 | Floating discharge sealing structure of steam rotary dryer |
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| Publication Number | Publication Date |
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| CN216430499U true CN216430499U (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122067289.7U Active CN216430499U (en) | 2021-08-30 | 2021-08-30 | Floating discharge sealing structure of steam rotary dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143763A (en) * | 2022-05-27 | 2022-10-04 | 天华化工机械及自动化研究设计院有限公司 | Discharge sealing structure and steam rotary dryer |
| CN115143764A (en) * | 2022-05-27 | 2022-10-04 | 天华化工机械及自动化研究设计院有限公司 | Feeding sealing structure and rotary dryer |
-
2021
- 2021-08-30 CN CN202122067289.7U patent/CN216430499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143763A (en) * | 2022-05-27 | 2022-10-04 | 天华化工机械及自动化研究设计院有限公司 | Discharge sealing structure and steam rotary dryer |
| CN115143764A (en) * | 2022-05-27 | 2022-10-04 | 天华化工机械及自动化研究设计院有限公司 | Feeding sealing structure and rotary dryer |
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