CN114278743A - Valve plate wearing and tearing self compensating's rotatory feeder of no leakage - Google Patents
Valve plate wearing and tearing self compensating's rotatory feeder of no leakage Download PDFInfo
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- CN114278743A CN114278743A CN202111682396.9A CN202111682396A CN114278743A CN 114278743 A CN114278743 A CN 114278743A CN 202111682396 A CN202111682396 A CN 202111682396A CN 114278743 A CN114278743 A CN 114278743A
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- valve plate
- rotor
- compensating
- valve
- static ring
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- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000003068 static effect Effects 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sliding Valves (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Multiple-Way Valves (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention provides a rotary feeder for valve plate abrasion self-compensation, which can always keep the outer side surface of a valve plate attached to an inner cavity of a shell when the outer side surface of the valve plate is abraded, so that the self-compensation effect and the sealing effect are achieved; meanwhile, materials can be effectively prevented from entering the bearing from the side face, the working environment of the bearing is guaranteed, and the service life of the bearing is prolonged. The valve plate compensation spring is arranged between the rotor and the valve plate and used for pushing the valve plate to move away from the axis of the rotor along the radial direction, and the outer side face of the valve plate, away from the axis of the rotor, is attached to the inner cavity of the shell under the action of the valve plate compensation spring.
Description
Technical Field
The invention relates to a sealing structure of a rotary feeder, in particular to a non-leakage rotary feeder with a valve plate self-compensating abrasion.
Background
A rotary feeder, which is a continuous transportation device using a rotary structure, is one of important devices in a pneumatic conveying system. A rotary feeder generally comprises a housing, a rotor, valve plates, a feed opening, and a discharge opening, wherein material is fed from the feed opening, is packed between the valve plates, and is transported from the feed opening to the discharge opening as the rotor rotates. The rotary feeder is simple in structure and convenient to maintain, and is widely applied to the fields of medicine, chemical industry and metallurgy. Patent No. CN 103043444 a discloses a hermetic sealing device for a rotary feeder, in which a sealing chamber is formed between an end surface of a rotor and an inner circumferential surface of a housing or an inner surface of an end cover, and gas is introduced into the sealing chamber to form hermetic sealing. This patent uses gas seal, can compensate the clearance of rotor and terminal surface, but need establish the supplementary gas supply system that ensures gas seal, and construction and running cost are all higher, and the clearance between rotor and the casing still exists, arouses gas leakage easily, causes potential safety hazards such as returning charge, raise dust.
Disclosure of Invention
In order to solve the problems, the invention provides a rotary feeder for valve plate abrasion self-compensation, which can always keep the outer side surface of a valve plate attached to the inner cavity of a shell when the outer side surface of the valve plate is abraded, so as to achieve the self-compensation effect and the sealing effect; meanwhile, materials can be effectively prevented from entering the bearing from the side face, the working environment of the bearing is guaranteed, and the service life of the bearing is prolonged.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a valve plate abrasion self-compensating leakage-free rotary feeder, which comprises a shell 1, a feeding port 2, a discharging port 3, a transmission shaft 4, a rotor 5 and bearing seats 12, wherein the bearing seats 12 are fixed on two sides of the shell 1, the transmission shaft 4 is rotatably arranged on the bearing seats 12, the rotor 5 is connected to the transmission shaft 4, a plurality of valve plates 8 moving relative to the rotor 5 in the radial direction of the rotor are arranged on the rotor 5, a valve plate compensation spring 10 used for pushing the valve plates 8 to move away from the axis of the rotor in the radial direction is arranged between the rotor 5 and the valve plates 8, and the outer side surface of the valve plate 8 away from the axis of the rotor is attached to the inner cavity of the shell under the action of the valve plate compensation spring 10.
Due to the fact that the valve plate compensation spring 10 is arranged, the outer side face of the valve plate is attached to the inner cavity of the shell, and even if the valve plate is abraded, the sealing effect between the valve plate and the shell can be still guaranteed.
The valve plate abrasion self-compensating leakage-free rotary feeder comprises a rotor 5 and a plurality of valve plate mounting grooves 6, wherein the rotor 5 comprises a rotor mandrel and end plates positioned at two ends of the rotor mandrel, a plurality of valve plate guide grooves 7 are formed in the inner end surfaces, opposite to the two end plates, of the rotor mandrel, each valve plate guide groove 7 is communicated with one valve plate mounting groove 6 and is the same in width, and each valve plate 8 is in sliding contact with two side walls of each valve plate mounting groove 6 and each valve plate guide groove 7; connect valve plate spring fixing base 11 on the bottom surface of valve plate mounting groove 6, during valve plate spring fixing base 11's the other end stretched into and opens the guiding hole 9 on valve plate 8 is close to the medial surface of rotor axis, the one end and the 8 medial surface contacts of valve plate compensation spring 10 who encircles valve plate spring fixing base 11, the other end and the 6 bottom surfaces of valve plate mounting groove or the 11 contacts of valve plate spring fixing base.
The valve plate abrasion self-compensating non-leakage rotary feeder has a small clearance between the periphery of the end plate 19 and the inner cavity of the shell. The end plates at the two ends of the rotor and the inner cavity of the shell are provided with smaller gaps, so that gas and materials can be effectively prevented from entering the bearing seat from the gaps, and meanwhile, airflow in the valve plate space between the two valve plates is prevented from jumping into the other adjacent valve plate space.
In the non-leakage rotary feeder with the valve plate wear self-compensation function, the static ring 14 is arranged between the bearing seat 12 and the outer end face of the end plate, and the static ring 14 is in sealing contact with the inner cavity of the shell and the outer end face of the end plate.
The static ring prevents gas and materials from entering the bearing seat, and the cleanness of the working environment of the bearing is ensured.
In the leak-free rotary feeder with the valve plate wear self-compensation, the bearing seat 12 is fixedly provided with the guide pin 17 extending into the guide pin hole 15 formed in the static ring 14, and the static ring compensation spring 16 surrounding the guide pin 17 is arranged between the static ring 14 and the bearing seat 12 so as to push the static ring 14 to be tightly pressed on the outer end surface of the end plate.
The guide pin 17 can prevent the static ring from rotating, and the static ring compensation spring 16 can ensure the sealing effect of the static ring, the outer end face of the end plate and the inner cavity of the shell.
According to the valve plate abrasion self-compensating non-leakage rotary feeder, the pressure between the outer side surface of the valve plate 8 and the inner cavity of the shell is 0.1-0.2 MPa, and the rotating speed of the rotor 5 is not more than 20 rpm.
The pressure between the outer side surface of the valve plate and the inner cavity of the shell is 0.1-0.2 MPa, and the sealing effect is good. The pressure is too high, and the valve plate is worn quickly.
In the leak-free rotary feeder with the valve plate self-compensating function, the bottom surface of the valve plate mounting groove 6 is in threaded connection with the valve plate spring fixing seat 11, one end of the valve plate compensating spring 10 is in contact with the inner side surface of the valve plate 8, and the other end of the valve plate compensating spring is in contact with the valve plate spring fixing seat 11; the elasticity of the valve plate compensation spring 10 is changed by adjusting the relative position of the valve plate spring fixing seat 11 and the valve plate mounting groove 6, so that the pressure between the outer side surface of the valve plate 8 and the inner cavity of the shell is 0.1-0.2 MPa.
Valve plate spring fixing base passes through threaded connection in 6 bottom surfaces of valve plate mounting groove, can adjust the elasticity of valve plate compensation spring 10 through changeing valve plate spring fixing base 11, and then changes the pressure between valve plate 8 and the casing inner chamber, and it is very convenient to adjust.
In the self-compensation leakage-free rotary feeder, a chamfer is formed between the outer side surface of the valve plate 8 and the two end surfaces of the valve plate.
The chamfer of valve plate both sides can improve the laminating situation of valve plate and casing inner chamber, prevents that the valve plate card from in the casing intracavity.
In the invention, the rotor, the end plate, the valve plate spring fixing seat, the valve plate compensation spring and the like form a self-compensation valve plate assembly, so that the valve plate and the inner cavity of the shell can be automatically compensated after frictional wear. The mechanical seal assembly composed of the bearing seat, the static ring compensation spring, the guide pin hole, the static ring and the like achieves the purpose of the static ring self-compensation rotor. The self-compensating valve plate assembly is used in the gap between the valve plate and the inner cavity of the shell, the mechanical sealing assembly is used in the gap between the end plates at the two ends of the rotor and the inner cavity of the shell, the gap generated by friction and abrasion can be automatically compensated, the leakage of materials and gas from the gap can be effectively prevented, the dust in the materials is prevented from damaging the working environment of the bearing, the service life of the bearing is prolonged, and the phenomena of material returning and dust raising are prevented.
Drawings
FIG. 1 is a schematic sectional front view of a leak-free rotary feeder with self-compensation of valve plate wear;
FIG. 2 is a schematic view of the structure of the rotor;
FIG. 3 is a schematic view of the bearing housing;
FIG. 4 is a schematic structural view of a stationary ring;
FIG. 5 is a cross-sectional view of the valve plate;
FIG. 6 is a schematic structural view of the spring seat and stationary ring coupling;
figure 7 is a cross-sectional view of a leak free rotary feeder with valve plate wear self-compensation.
In the figure, a shell 1, a feeding port 2, a discharging port 3, a transmission shaft 4, a rotor 5, a valve plate mounting groove 6, a valve plate guide groove 7, a valve plate 8, a guide hole 9, a valve plate compensation spring 10, a valve plate spring fixing seat 11, a bearing seat 12, a guide pin threaded hole 13, a stationary ring 14, a guide pin hole 15, a stationary ring compensation spring 16, a guide pin 17, an end cover 18 and an end plate 19.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention provides a leakage-free rotary feeder with a valve plate wear self-compensation function, which effectively prevents the problems of gas leakage, material return and dust raising by using a self-compensation valve plate wear mode and improves the conveying efficiency.
As shown in fig. 1 to 6, the leakage-free rotary feeder with valve plate wear self-compensation according to the present invention includes a housing 1, a feeding port 2, a discharging port 3, a transmission shaft 4, a rotor 5, a valve plate mounting groove 6, a valve plate guide groove 7, a valve plate 8, a guide hole 9, a valve plate compensation spring 10, a valve plate spring fixing seat 11, a bearing seat 12, 3-6 guide pin threaded holes 13, a stationary ring 14, a guide pin hole 15, a stationary ring compensation spring 16, a guide pin 17, and an end cover 18.
The rotor 5 comprises a rotor spindle and end plates 19 at both ends of the rotor spindle. The diameter of the end plate is larger than that of the mandrel, and a small sealing gap is formed between the periphery of the end plate and the inner cavity of the shell.
The end face of the bearing seat opposite to the end plate 19 is provided with 3-6 guide pin threaded holes 13, one end of the guide pin 17 with threads is screwed into the guide pin threaded hole 13, and the static ring compensation spring 16 is placed on the guide pin 17; the static ring 14 is connected with the bearing seat 12, the unthreaded side of the guide pin 17 is inserted into the guide pin hole 15 on the static ring 14 to prevent the static ring 14 from rotating along with the transmission shaft, and the static ring compensation spring 16 surrounding the guide pin 17 is arranged between the static ring 14 and the bearing seat 12 to push the static ring 14 to be tightly pressed on the outer end face of the end plate, so that the static ring is in sealing contact with the outer end face of the end plate and the inner cavity of the shell.
The bearing seat 12, the static ring compensation spring 16, the guide pin 17, the guide pin hole 15, the static ring 14 and the like form a mechanical seal assembly of the static ring compensation rotor.
The static ring 14 can compensate in the axial direction through the static ring compensation spring 16 and the guide pin 17, can prevent the material from entering the bearing inner chamber, guarantees the bearing working environment, improves the bearing life-span.
The rotor 5 is coupled to the drive shaft 4 by a key. The rotor core shaft is provided with 3-6 valve plate mounting grooves 6, the inner end surfaces of the two end plates opposite to each other are provided with a plurality of valve plate guide grooves 7, each valve plate guide groove 7 is communicated with one valve plate mounting groove 6 and has the same width, and each valve plate 8 is in sliding contact with two side walls of the valve plate mounting groove 6 and the valve plate guide groove 7.
2-4 threaded holes are drilled in the bottom surface of the valve plate mounting groove 6, and one end of the valve plate spring fixing seat 11 is screwed into the threaded holes. The valve plate 8 drills corresponding guide holes 9 with steps, the valve plate 8 is inserted into the valve plate guide groove 7 and the valve plate mounting groove 6, the other end of the valve plate spring fixing seat 11 is inserted into the guide holes 9, and two ends of the valve plate compensating spring 10 are attached to the flange plate of the valve plate spring fixing seat 11 and the step surfaces of the guide holes 9 respectively. The rotor, the end plate, the valve plate spring fixing seat, the valve plate compensation spring and the like form a self-compensation valve plate assembly, and the gap between the compensation valve plate and the inner cavity of the shell is compensated. The elasticity of the valve plate compensation spring 10 is changed by adjusting the relative position of the valve plate spring fixing seat 11 and the bottom surface of the valve plate mounting groove 6, so that the pressure between the outer side surface of the valve plate 8 and the inner cavity of the shell is 0.1-0.2 MPa. The valve plate 8 can radially compensate the clearance between the outer side surface of the valve plate and the inner cavity of the shell through the valve plate compensation spring 10 and the guide hole 9, and gas leakage, material returning and dust raising phenomena are prevented.
The invention provides a valve plate abrasion self-compensating leakage-free rotary feeder, when the rotary feeder runs, materials enter from a feeding hole, the materials are conveyed to a discharging hole along with the rotation of a rotor, and the materials are discharged.
1. At rotatory feeder during operation, can produce friction wear between valve plate and the casing, can produce the clearance after long-time, valve plate compensation spring can promote the valve plate and remove along the radial direction of rotor under the direction of valve plate guide way and guiding hole, makes valve plate and casing laminating, realizes radially self-compensating, can effectually prevent gas leakage and feed back, improves the work efficiency of rotatory feeder.
2. According to the invention, 3-6 guide pin threaded holes are formed in the bearing block, the guide pins are fixed, the guide pin holes corresponding to the number of the guide pins are drilled in the static ring, one side of the static ring is connected with the bearing block through the guide pins, the other side of the static ring is attached to the rotor, the static ring is tightly pressed on the end plate through the static ring compensation spring, a mechanical sealing structure of the static ring compensation rotor is formed, materials can be effectively prevented from entering the bearing cavity through the gap between the end plate and the shell, the working environment of the bearing can be ensured, and the service life of the bearing is prolonged.
3. The mechanical seals of the static ring compensation rotor are symmetrically arranged at the two ends of the rotor, so that the axial force can be effectively eliminated, and the reliability of mechanical operation is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a valve plate wearing and tearing self compensating's rotatory feeder of no leakage, includes casing (1), material loading mouth (2), feed opening (3), transmission shaft (4), rotor (5), bearing frame (12), and casing (1) both sides fixed bearing frame (12), transmission shaft (4) are rotated and are set up on bearing frame (12), and rotor (5) are connected on transmission shaft (4), characterized by: the rotor (5) is provided with a plurality of valve plates (8) which move relative to the rotor (5) in the radial direction of the rotor, a valve plate compensation spring (10) used for pushing the valve plates (8) to move away from the axis of the rotor in the radial direction is arranged between the rotor (5) and the valve plates (8), and the outer side face, away from the axis of the rotor, of each valve plate (8) is attached to the inner cavity of the shell under the action of the valve plate compensation spring (10).
2. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 1, wherein: the rotor (5) comprises a rotor mandrel and end plates positioned at two ends of the rotor mandrel, the rotor mandrel is provided with a plurality of valve plate mounting grooves (6), a plurality of valve plate guide grooves (7) are formed in the inner end surfaces of the two end plates, which are opposite to each other, each valve plate guide groove (7) is communicated with one valve plate mounting groove (6) and has the same width, and each valve plate (8) is in sliding contact with two side walls of the valve plate mounting groove (6) and the valve plate guide groove (7) at the same time; connect valve plate spring fixing base (11) on the bottom surface of valve plate mounting groove (6), the other end of valve plate spring fixing base (11) stretches into and opens in guiding hole (9) on valve plate (8) are close to the medial surface of rotor axis, the one end and valve plate (8) medial surface contact of valve plate compensation spring (10) of surrounding valve plate spring fixing base (11), the other end and valve plate mounting groove (6) bottom surface or valve plate spring fixing base (11) contact.
3. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 2, wherein: a small gap is reserved between the periphery of the end plate (19) and the inner cavity of the shell.
4. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 3, wherein: a static ring (14) is arranged between the bearing seat (12) and the outer end face of the end plate, and the static ring (14) is in sealing contact with the inner cavity of the shell and the outer end face of the end plate.
5. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 4, wherein: a guide pin (17) extending into a guide pin hole (15) formed in the static ring (14) is fixed on the bearing seat (12), and a static ring compensation spring (16) surrounding the guide pin (17) is arranged between the static ring (14) and the bearing seat (12) to push the static ring (14) to be pressed on the outer end face of the end plate.
6. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 1, wherein: the pressure between the outer side surface of the valve plate (8) and the inner cavity of the shell is 0.1-0.2 MPa, and the rotating speed of the rotor (5) is not more than 20 rpm.
7. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 2, wherein: the bottom surface of the valve plate mounting groove (6) is connected with a valve plate spring fixing seat (11) through threads, one end of a valve plate compensation spring (10) is in contact with the inner side surface of the valve plate (8), and the other end of the valve plate compensation spring is in contact with the valve plate spring fixing seat (11); the elasticity of the valve plate compensation spring (10) is changed by adjusting the relative position of the valve plate spring fixing seat (11) and the valve plate mounting groove (6), so that the pressure between the outer side surface of the valve plate (8) and the inner cavity of the shell is 0.1-0.2 MPa.
8. A valve plate wear self-compensating leak-free rotary feeder as claimed in claim 1, wherein: a chamfer is formed between the outer side surface of the valve plate (8) and the two end surfaces of the valve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111682396.9A CN114278743B (en) | 2021-12-30 | 2021-12-30 | Leakage-free rotary feeder with self-compensating valve plate abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111682396.9A CN114278743B (en) | 2021-12-30 | 2021-12-30 | Leakage-free rotary feeder with self-compensating valve plate abrasion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114278743A true CN114278743A (en) | 2022-04-05 |
| CN114278743B CN114278743B (en) | 2024-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111682396.9A Active CN114278743B (en) | 2021-12-30 | 2021-12-30 | Leakage-free rotary feeder with self-compensating valve plate abrasion |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201441A (en) * | 1990-07-06 | 1993-04-13 | Waeschle Maschinenfabrik Gmbh | Rotary feeder with improved seal arrangement between the lateral rotor disk and the pertaining bearing cover |
| CN101177206A (en) * | 2007-11-09 | 2008-05-14 | 江苏智思机械集团有限公司 | Rotary sealing feeding valve |
| CN101280848A (en) * | 2008-05-19 | 2008-10-08 | 宁波中策动力机电集团有限公司 | Mechanical sealing device for axis |
| CN203064814U (en) * | 2013-01-23 | 2013-07-17 | 广东海洋大学 | Rotary feeder with airtight device |
| CN210423725U (en) * | 2019-09-03 | 2020-04-28 | 徐工集团凯宫重工南京股份有限公司 | Shield constructs quick-witted slip casting bearing package and puts with automatic compensation function |
| CN211693519U (en) * | 2019-12-30 | 2020-10-16 | 江苏欣宏泰机电有限公司 | Compact sealing device for wire drawing wheel shaft |
-
2021
- 2021-12-30 CN CN202111682396.9A patent/CN114278743B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201441A (en) * | 1990-07-06 | 1993-04-13 | Waeschle Maschinenfabrik Gmbh | Rotary feeder with improved seal arrangement between the lateral rotor disk and the pertaining bearing cover |
| CN101177206A (en) * | 2007-11-09 | 2008-05-14 | 江苏智思机械集团有限公司 | Rotary sealing feeding valve |
| CN101280848A (en) * | 2008-05-19 | 2008-10-08 | 宁波中策动力机电集团有限公司 | Mechanical sealing device for axis |
| CN203064814U (en) * | 2013-01-23 | 2013-07-17 | 广东海洋大学 | Rotary feeder with airtight device |
| CN210423725U (en) * | 2019-09-03 | 2020-04-28 | 徐工集团凯宫重工南京股份有限公司 | Shield constructs quick-witted slip casting bearing package and puts with automatic compensation function |
| CN211693519U (en) * | 2019-12-30 | 2020-10-16 | 江苏欣宏泰机电有限公司 | Compact sealing device for wire drawing wheel shaft |
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| Publication number | Publication date |
|---|---|
| CN114278743B (en) | 2024-08-23 |
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